EP4410119A1 - 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 - Google Patents

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 Download PDF

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Publication number
EP4410119A1
EP4410119A1 EP22875513.8A EP22875513A EP4410119A1 EP 4410119 A1 EP4410119 A1 EP 4410119A1 EP 22875513 A EP22875513 A EP 22875513A EP 4410119 A1 EP4410119 A1 EP 4410119A1
Authority
EP
European Patent Office
Prior art keywords
tobacco
sheet
type flavor
combustion heating
mass
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Pending
Application number
EP22875513.8A
Other languages
German (de)
English (en)
French (fr)
Inventor
Akihiro Koide
Kimitaka UCHII
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Japan Tobacco Inc
Original Assignee
Japan Tobacco Inc
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
Priority claimed from PCT/JP2021/036396 external-priority patent/WO2022071570A1/ja
Priority claimed from PCT/JP2021/036389 external-priority patent/WO2022071563A1/ja
Application filed by Japan Tobacco Inc filed Critical Japan Tobacco Inc
Publication of EP4410119A1 publication Critical patent/EP4410119A1/en
Pending legal-status Critical Current

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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
    • 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
    • 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
    • A24B15/12—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
    • A24B15/16—Chemical features of tobacco products or tobacco substitutes of tobacco substitutes
    • A—HUMAN NECESSITIES
    • A24—TOBACCO; CIGARS; CIGARETTES; SIMULATED SMOKING DEVICES; SMOKERS' REQUISITES
    • A24B—MANUFACTURE OR PREPARATION OF TOBACCO FOR SMOKING OR CHEWING; TOBACCO; SNUFF
    • A24B15/00—Chemical features or treatment of tobacco; Tobacco substitutes, e.g. in liquid form
    • A24B15/18—Treatment of tobacco products or tobacco substitutes
    • A24B15/28—Treatment of tobacco products or tobacco substitutes by chemical substances
    • A24B15/30—Treatment of tobacco products or tobacco substitutes by chemical substances by organic substances
    • A24B15/36—Treatment of tobacco products or tobacco substitutes by chemical substances by organic substances containing a heterocyclic ring
    • A24B15/40—Treatment of tobacco products or tobacco substitutes by chemical substances by organic substances containing a heterocyclic ring having only oxygen or sulfur as hetero atoms
    • A24B15/403—Treatment of tobacco products or tobacco substitutes by chemical substances by organic substances containing a heterocyclic ring having only oxygen or sulfur as hetero atoms having only oxygen as hetero atoms
    • 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
    • A24B7/00—Cutting 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
    • A24B7/00—Cutting tobacco
    • A24B7/04—Cutting tobacco by machines with revolving knives
    • 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 method for manufacturing the tobacco sheet, 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. The bulkiness is a value indicating a volume of a predetermined mass of shredded tobacco sheets compressed at a certain pressure for a certain period.
  • 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 wherein the tobacco sheet contains a tobacco raw material and has a wavy shape in a cross-section in a thickness direction.
  • the sheet according to Aspect 1 having a density of 1.0 g/cm 3 or less.
  • 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:
  • a method for manufacturing the tobacco sheet for a non-combustion heating-type flavor inhaler according to any one of Aspects 1 to 3, the method including:
  • a method for manufacturing the tobacco sheet for a non-combustion heating-type flavor inhaler according to Aspect 4 or 5, the method 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.
  • a tobacco sheet for a non-combustion heating-type flavor inhaler according to the present embodiment (hereinafter also referred to as a "tobacco sheet”) contains a tobacco raw material and has a wavy shape in a cross-section in the thickness direction. Due to the wavy shape in the cross-section in the thickness direction, 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 an aerosol generator and one or two or more shaping agents, and the blending ratio of these is set in a predetermined range to further improve the bulkiness of the tobacco sheet.
  • the tobacco sheet according to the present embodiment has the wavy shape in the cross-section in the thickness direction. That is, the tobacco sheet according to the present embodiment cut in the thickness direction in one direction of an in-plane direction has a wavy shape in the cross-section.
  • the one direction of the in-plane direction may be, for example, the longitudinal direction or the transverse direction of the tobacco sheet.
  • the "wavy shape" may be any vertically waved shape, and the wave crest may have a linear shape or a curved shape.
  • the wave may be regular or irregular.
  • Fig. 1 illustrates an example of a cross-sectional shape of the tobacco sheet according to the present embodiment in the thickness direction.
  • a tobacco sheet 1 illustrated in Fig. 1 has a wave 2 in a cross-section in the thickness direction.
  • the width w1 of the wave 2 is preferably, but not limited to, in the range of 0.1 to 10.0 mm.
  • the height w2 of the wave 2 is preferably, but not limited to, in the range of 0.1 to 5.0 mm.
  • the tobacco sheet 1 preferably has a thickness w3 in the range of 100 to 1000 ⁇ m.
  • the wave 2 may have a serrated shape 3.
  • the tobacco sheet according to the present embodiment may have any size in the in-plane direction and, for example, may have a length in the range of 5.0 to 40.0 mm and a width in the range of 0.5 to 2.0 mm.
  • the tobacco raw material in the tobacco sheet according to the present embodiment 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 powder content per 100% by mass of the tobacco sheet preferably ranges from 45% to 95% by mass, more preferably 50% to 93% by mass, still more preferably 60% to 85% by mass.
  • 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 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 4% to 50% by mass.
  • An aerosol generator content of 4% 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 40% by mass, still more preferably 8% to 30% by mass, particularly preferably 10% to 20% by mass.
  • the tobacco sheet according to the present embodiment preferably further contains a shaping agent from the perspective of ensuring the shape.
  • the tobacco sheet according to the present embodiment preferably further contains a first shaping agent and a second shaping agent from the perspective of sufficiently achieving both the aerosol generator retention capability and the wavy shape retention capability of the tobacco sheet.
  • the first shaping agent and the second shaping agent may be of different types or may be of the same type but different in form.
  • the first shaping agent is, for example, a polysaccharide, a protein, a synthetic polymer, or the like.
  • 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 second shaping agent may be different from the first shaping agent but, like the first shaping agent, may be a polysaccharide, a protein, a synthetic polymer, or the like.
  • the first shaping agent content per 100% by mass of the tobacco sheet preferably ranges from 0.1% to 15% by mass.
  • the first shaping agent content is 0. 1%by mass or more, a raw material mixture can be easily formed into a sheet.
  • the first 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 first shaping agent content more preferably ranges from 0.1% to 12% by mass, still more preferably 0.1% to 10% by mass, particularly preferably 0.1% to 7% by mass.
  • the second shaping agent content per 100% by mass of the tobacco sheet preferably ranges from 0.1% to 15% by mass.
  • the second shaping agent content is 0.1% by mass or more, a raw material mixture can be easily formed into a sheet.
  • the second 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 second shaping agent content more preferably ranges from 0.1% to 12% by mass, still more preferably 0.1% to 10% by mass, particularly preferably 0.1% to 7% by mass.
  • the first shaping agent and the second shaping agent are of the same type but different in form
  • the first shaping agent may be a powder
  • the second shaping agent may be a solution or a slurry.
  • a shaping agent in the form of powder may be directly mixed as the first shaping agent, and a shaping agent dispersed or swollen in a solvent, such as water, may be mixed as the second shaping agent.
  • a solvent such as water
  • the tobacco sheet according to the present embodiment can further contain a reinforcing agent from the perspective of further improving physical properties.
  • the reinforcing agent is, for example, a fibrous material, such as fibrous pulp or fibrous synthetic cellulose, a liquid material with a surface coating function of forming a film when dried, such as aqueous pectin suspension, 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 4% to 40% 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 reinforcing agent content more preferably ranges from 4.5% to 35% by mass, still more preferably 5% to 30% 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 tobacco raw material, the aerosol generator, the shaping agents (the first and second shaping agents), 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 the tobacco sheet is cut into a size of 0.8 mm ⁇ 20 mm and is allowed to stand 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 method of manufacturing of tobacco sheet according to the present embodiment can include, for example, a step of preparing a mixture containing a tobacco raw material, an aerosol generator, a first shaping agent, and a second shaping agent, a step of rolling the mixture to form a rolled product, and a step of pressing a rotary roll blade against the rolled product to cut the rolled product into a strip while imparting a wavy shape to the strip.
  • the process of imparting a wavy shape is also referred to as a rippling process.
  • the tobacco sheet according to the present embodiment can be produced by the following method.
  • a resistance applied to the sheet imparts a wavy shape and a serrated shape to the sheet as illustrated in Fig. 1 .
  • a resistance applied by separating the rolled product from the roll can impart a wavy shape and a serrated shape in the same manner.
  • the surface of a rolling roller may be heated or cooled, or the number of revolutions of the rolling roller may be adjusted.
  • a tobacco sheet with a desired basis weight can be formed by adjusting the distance between rolling rollers.
  • a non-combustion heating-type flavor inhaler includes a tobacco-containing segment containing the tobacco sheet according to the present embodiment or the like. 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 or the like, 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. 2 illustrates an example of the non-combustion heating-type flavor inhaler according to the present embodiment.
  • a non-combustion heating-type flavor inhaler 4 illustrated in Fig. 2 includes a tobacco-containing segment 5 filled with the tobacco sheet according to the present embodiment or the like, a tubular cooling segment 6 with a hole 11 on the periphery, a center hole segment 7, and a filter segment 8.
  • 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 5 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 5 or in a direction perpendicular to the axial direction.
  • the cooling segment 6 may be constituted by a tubular member 10.
  • the tubular member 10 may be, for example, a paper tube prepared by processing a thick paper into a cylindrical shape.
  • the tubular member 10 and a mouthpiece lining paper 15 described later have the hole 11 passing therethrough.
  • the hole 11 allows the outside air to be introduced into the cooling segment 6 during inhalation. This brings a vaporized aerosol component generated by heating the tobacco-containing segment 5 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 11 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 11 may be, but is not limited to, one or two or more. For example, a plurality of holes 11 may be provided on the periphery of the cooling segment 6.
  • the amount of outside air introduced through the hole 11 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 7 is composed of a second fill layer 12 with a hollow portion and a second inner plug wrapper 13 covering the second fill layer 12.
  • the center hole segment 7 has a function of increasing the strength of a mouthpiece segment 9.
  • the second fill layer 12 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 12 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 12.
  • the second fill layer 12 inside the center hole segment 7 is a fiber fill layer, and the touch from the outside during use rarely causes discomfort to the user.
  • the center hole segment 7 may have no second inner plug wrapper 13 and may maintain its shape by thermoforming.
  • the filter segment 8 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 8 can be appropriately changed depending on the amount, material, and the like of filler in the filter segment 8. For example, when the filler is cellulose acetate fibers, increasing the amount of cellulose acetate fibers in the filter segment 8 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 8 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 8 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 8 preferably has an axial length in the range of 5 to 9 mm, more preferably 6 to 8 mm.
  • the filter segment 8 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 8.
  • the center hole segment 7 and the filter segment 8 can be connected using an outer plug wrapper (outer wrapping paper) 14.
  • the outer plug wrapper 14 may be, for example, cylindrical paper.
  • the tobacco-containing segment 5, the cooling segment 6, and the connected center hole segment 7 and filter segment 8 can be connected using the mouthpiece lining paper 15.
  • 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 15, 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. 3 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. 3 includes the non-combustion heating-type flavor inhaler 4 according to the present embodiment and a heating device 16 for heating the tobacco-containing segment of the non-combustion heating-type flavor inhaler 4 from the outside.
  • Fig. 3(a) illustrates a state before the non-combustion heating-type flavor inhaler 4 is inserted into the heating device 16
  • Fig. 3(b) illustrates a state in which the non-combustion heating-type flavor inhaler 4 is inserted into the heating device 16 and is heated.
  • the heating device 16 illustrated in Fig. 3 includes a body 17, a heater 18, a metal tube 19, a battery unit 20, and a control unit 21.
  • the body 17 has a tubular recess 22.
  • the heater 18 and the metal tube 19 are arranged on the inner side surface of the recess 22 at a position corresponding to the tobacco-containing segment of the non-combustion heating-type flavor inhaler 4 inserted into the recess 22.
  • the heater 18 may be an electrical resistance heater and is heated by an electric power supplied from the battery unit 20 according to an instruction from the control unit 21 for temperature control. Heat generated by the heater 18 is transferred to the tobacco-containing segment of the non-combustion heating-type flavor inhaler 4 through the metal tube 19 with high thermal conductivity.
  • the heating device 16 heats the tobacco-containing segment of the non-combustion heating-type flavor inhaler 4 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.
  • the present inventors have found that high response at the beginning of inhalation, that is, sufficient delivery of a flavor component at the beginning of inhalation enhances the use satisfaction.
  • known tobacco sheets have no or very low air permeability.
  • the sheet has been rolled to change the loading amount of the composition, the density of the composition, or the like.
  • such a known method has a threshold value in the loading amount and the density to maintain the rolled shape and disadvantageously has a narrow applicable range in product design.
  • the present invention includes a tobacco sheet with a high bulkiness and higher use satisfaction (first embodiment) and a tobacco sheet with a high bulkiness that can have a good profile (second embodiment) These embodiments are described below.
  • the tobacco sheet according to the present embodiment has a density of 1.0 g/cm 3 or less.
  • the binder is a type of the shaping agent described above and is an adhesive agent for binding tobacco powder particles or binding a tobacco powder 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
  • 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 according to the present embodiment can contain no tobacco-derived fiber or no fiber derived from a material other than tobacco (for example, cellulose). This can avoid an undesirable influence, such as an unpleasant taste, on the smoke taste due to these fibers. However, it is unrealistic to completely eliminate fibers, and the amount of the fibers in the tobacco sheet is preferably 1.0% by mass, more preferably 0.5% by mass, based on dry mass.
  • the tobacco sheet according to the present embodiment can contain 0.5% to 2.0% by mass of a tobacco-derived fiber or a fiber derived from a material other than tobacco in total. In such a case, the fiber improves the strength of the tobacco sheet and provides a good balance between the smoke taste and the strength.
  • the tobacco-derived fiber refers to a fiber produced by beating a tobacco raw material with a grinder or the like to produce pulp and is different from the tobacco material.
  • 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
  • the tobacco sheet according to the present embodiment has a density of 1.0 g/cm 3 or less.
  • a tobacco sheet with such a low density can achieve sufficient delivery of a flavor component at the beginning of inhalation.
  • the reason for this is not limited, it is surmised that a tobacco sheet with a low density can reduce the packing density of a tobacco filler in a smoking article and can therefore increase the amount of heat received per mass. Furthermore, a decrease in packing density can achieve cost reduction. From these perspectives, 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 preferably, but not limited to, 0.5 g/cm 3 or more from the perspective of strength or the like. In the present invention, the density is calculated from the basis weight (mass per unit area) and the thickness.
  • the tobacco sheet according to the present embodiment preferably has an air permeability of 0 CORESTA units.
  • the tobacco sheet may have any thickness, 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, still more preferably 150 ⁇ m or more.
  • 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. 4(A) ).
  • 200A denotes a tobacco segment
  • T denotes a tobacco sheet
  • 220 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 200A illustrated in Fig. 4 (A) may be cut to have an aspect ratio (length/diameter) in the range of approximately 0.5 to 1.2 (see Fig. 4(B) ).
  • the tobacco segment 200A has a tubular wrapper 220 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. 4(C) ).
  • the tobacco segment 200A 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 200A has the tubular wrapper 220 and cut pieces of the tobacco sheet T packed in the wrapper (see Fig. 4(D) ).
  • the tobacco segment 200A 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 200A has the tubular wrapper 220 and shredded strands packed in the wrapper (see Fig. 4(E) ).
  • the shredded strands are packed such that the longitudinal direction thereof is approximately parallel to the longitudinal direction of the wrapper 220.
  • Each shredded strand may have a width in the range of approximately 0.5 to 1.5 mm.
  • the tobacco segment 200A has the tubular wrapper 220 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.
  • 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 flattening 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.
  • flattening and extrusion may be combined. For example, the mixture may be extruded and then further flattened to form a sheet.
  • the tobacco raw material, the binder, and the medium are kneaded.
  • an aerosol generator, 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.
  • 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 generator, 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 flattening 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.
  • a wet powder to be used contains tobacco particles with a D90 of 200 ⁇ m or more and a liquid medium containing water (more preferably, a liquid medium composed of water) and has a water content of 50% by mass or more.
  • 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 flattened 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 flattened 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 flattening 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 with a high bulkiness that can have a good profile contains a tobacco raw material, a humectant, a binder, and one or both of a flavoring and taste agent and a shaping aid, and has an air permeability of more than 0 CORESTA units.
  • the humectant in the present embodiment is a material for imparting moisture to the tobacco sheet and is also the aerosol generator that is vaporized by heating and is cooled to generate an aerosol or that generates an aerosol by atomization.
  • the humectant in the present embodiment may be a polyhydric alcohol, such as glycerin or propylene glycol (PG); or a triester, such as triethyl citrate (TEC) or triacetin.
  • TEC triethyl citrate
  • the humectant in the present embodiment preferably has a boiling point of more than 100°C.
  • the amount of the humectant in the tobacco sheet preferably ranges from 1% to 40% by mass, more preferably 10% to 20% by mass, based on dry mass (mass excluding water mixed therein, the same applies hereinafter).
  • amount of the humectant is higher than the upper limit, it may be difficult to produce a tobacco sheet.
  • the amount of the humectant is lower than the lower limit, smoke sensitivity may decrease.
  • the binder described in the first embodiment can be used.
  • the flavoring and taste agent is a material that imparts a flavor, preferably a flavoring agent.
  • the flavoring agent may be one described above.
  • the tobacco sheet may contain the aerosol generator described in the first embodiment.
  • the shaping aid in the present embodiment may be pulp or non-woven fabric of plant fiber or synthetic fiber, more specifically, a tobacco-derived fiber or a fiber derived from a material other than tobacco.
  • the amount of the shaping aid to be added preferably ranges from 0.5% to 2.0% by mass in the tobacco sheet.
  • the tobacco sheet according to the present embodiment may contain either a flavoring and taste agent or a shaping aid. More specifically, the tobacco sheet containing a shaping aid can have an effect of ensuring the strength of the sheet, an effect of reducing the stickiness of the sheet, or the like.
  • the tobacco sheet containing a flavoring agent which can be carried by a shaping aid, can have an effect of improving the ability of the sheet to carry the flavoring agent or the like.
  • the tobacco sheet according to the present embodiment has an air permeability of more than 0 CORESTA units, preferably 50 CORESTA Units or more, 100 CORESTA Units or more, 200 CORESTA Units or more, 300 CORESTA Units or more, or 400 CORESTA Units or more, more preferably 500 CORESTA Units or more.
  • the upper limit thereof is preferably, but not limited to, 20,000 CORESTA units or less, more preferably 15,000 CORESTA units or less.
  • the CORESTA Unit is defined as the air flow rate (cm 3 ) per cm 2 per minute at a pressure difference of 1 kPa.
  • the air permeability can be measured with an air permeability meter PPM1000M manufactured by Cerulean.
  • the air permeability is preferably measured by the following procedure. 1) A sheet is conditioned by standing it for 48 hours under the conditions of a room temperature of 22°C and a relative humidity of 60%. 2) The sheet is then cut into a size of 40 mm ⁇ 240 mm, and the amount of air passing from the front surface to the back surface is measured with the air permeability measuring device (PPM1000M manufactured by Cerulean) at a pressure difference of 1 kPa using a 2-cm 2 circular measuring head. 3) The measurement environment is set to room temperature (for example, 22°C) and a relative humidity of 60%.
  • a tobacco sheet with a specific air permeability can be used to achieve an initial profile. More specifically, delivery higher than delivery of known sheets can be achieved in an initial puff, and a profile can be achieved in which the delivery amount is less likely to decrease in the latter half of the puff as in known sheets. Although the reason for this is not limited, it is surmised that the sheet with high air permeability has a high release efficiency of the humectant from the sheet and generates an increased amount of aerosol formed from the humectant.
  • 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 density in the range of 0.5 to 2.0 g/cm 3 , more preferably 0.5 to 1.0 g/cm 3 .
  • the tobacco sheet according to the present embodiment preferably has a pore provided physically or chemically, and the density herein is not the density of a portion excluding the pore but the density of the entire sheet including the pore.
  • the tobacco sheet according to the present embodiment with a density of 1.0 g/cm 3 or less can achieve more sufficient delivery of a flavor component at the beginning of inhalation.
  • the tobacco sheet according to the present embodiment preferably has a pore formed by processing.
  • the pore can be provided by physical or chemical processing.
  • the former may be laser processing, cutting processing with a needle or the like, electrical perforation by local electrical discharge, or the like.
  • the latter may be etching.
  • the pore may have any shape, a circle, an ellipse, a polygon, or the like, and is preferably a through-hole.
  • the size, number, and arrangement of pores are appropriately adjusted to achieve a desired air permeability.
  • the circumcircle of the pore has a diameter in the range of 0.1 to 0.8 mm.
  • pores are arranged in a lattice pattern on the sheet, and the shortest distance between adjacent pores ranges from approximately 0.2 to 0.8 mm.
  • 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.
  • the binder may be the first shaping agent or the second shaping agent.
  • Step 2 of flattening 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 flattening 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.
  • flattening and extrusion may be combined. For example, the mixture may be extruded and then further flattened to form a sheet.
  • a tobacco raw material a humectant, a binder, one or both of a flavoring and taste agent and a shaping aid, and a medium are kneaded.
  • an emulsifier may 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 of the tobacco raw material after the fine grinding is as described above. It 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 tobacco raw material, a binder, one or both of a flavoring and taste agent and a shaping aid, and an optional additive agent, such as a lipid, are mixed.
  • This mixing is preferably dry blending, and a mixer is preferably used as a mixing machine.
  • a medium, such as water, and a humectant 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 prepared in the step 2.
  • the amount of the medium can range from 20% to 50% by mass in the case of flattening 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 flattened 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 flattened 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 flattening 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 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.
  • the tobacco sheet can also be produced by a paper-making method, a casting method, a non-woven fabric coating method, or the like.
  • the paper-making method is a method for making paper from a mixture containing a tobacco raw material, a humectant, a binder, one or both of a flavoring and taste agent and a shaping aid, and water, and drying the paper to produce a sheet.
  • the mixture needs to contain a fibrous material and therefore preferably contains a fiberized tobacco raw material or pulp as a shaping aid.
  • a water extract extracted before a tobacco raw material is fiberized can be concentrated later and added back to a paper-made sheet.
  • a sheet produced by this method is referred to as a paper-made sheet.
  • the casting method is a method for spreading (casting) a mixture containing a tobacco raw material, a humectant, a binder, and one or both of a flavoring and taste agent and a shaping aid on a substrate, and drying the mixture to produce a sheet.
  • the mixture may contain a shaping aid and a medium, such as water.
  • a sheet produced by this method is referred to as a cast sheet.
  • the non-woven fabric coating method is a method for applying a mixture containing a tobacco raw material, a humectant, a binder, and one or both of a flavoring and taste agent and a shaping aid on a non-woven fabric to produce a sheet.
  • a sheet produced by this method is referred to as a non-woven fabric 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. More specifically, 70 parts by mass of the tobacco raw material, 12 parts by mass of glycerin as an aerosol generator, 4 parts by mass of powdered carboxymethyl cellulose as a first shaping agent, 1 part by mass of carboxymethyl cellulose swollen with water as a second shaping agent, 5 parts by mass of fibrous pulp as a reinforcing agent, and 8 parts by mass of a cocoa powder as a flavoring agent were mixed and kneaded using an extruder. The kneaded product was formed into a sheet using two pairs of metallic rolls to produce a rolled product.
  • a rotary roll blade for noodle making was pressed against the rolled product to cut the rolled product into a strip while imparting a wavy shape to the strip.
  • the strip was cut into a length of 20 mm and was dried to produce a tobacco sheet with a length of 20 mm and a width of 0.8 mm.
  • a cross-section of the tobacco sheet in the thickness direction had a cross-sectional shape as illustrated in Fig. 1 .
  • the bulkiness of the tobacco sheet was measured. More specifically, after the 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 a tobacco sheet into a cylindrical vessel with an inside diameter of 60 mm and determining the volume of the tobacco sheet 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.
  • a rolled product was produced in the same manner as in Example 1. It was then cut into a strip with a plurality of ring-shaped rotary blades. The strip was cut into a length of 20 mm to produce a tobacco sheet 20 mm in length and 0.8 mm in width having no wavy shape. The bulkiness of the tobacco sheet was measured in the same manner as in Example 1. Table 1 shows the results. [Table 1] Rate of increase in bulkiness (%) Example 1 54 Comparative example 1 -
  • 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 wavy shape of Comparative Example 1.
  • a tobacco leaf was ground with a grinder (ACM-5 manufactured by Hosokawa Micron Corporation) so as to have a D90 of 400 ⁇ m to produce leaf tobacco particles. D90 was 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 generator 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.
  • the die shape was a circular rectangle, and the screw speed was 60 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 250 ⁇ m in thickness with a layered structure of film/wet sheet/film.
  • the roll gaps in the first to fourth stages were 1100 ⁇ m, 500 ⁇ m, 300 ⁇ m, and 200 ⁇ 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 the tobacco sheet according to the present embodiment.
  • Table A1 Table A1 Formulation in Reference Example A1 Ground tobacco leaves Glycerin Binder Water Charged mass ratio [WB mass%] 55.8 9.7 2.5 32 Water content of component [mass%] 11.8 13 5.4 100 Charged mass ratio [DB mass%] (composition of finished sheet) 82 14 4 - Mass in wet powder [g] 98.4 16.8 4.8 80 Mass ratio in wet powder [WB mass%] 49.2 8.4 2.4 40 WB: wet basis DB: dry basis
  • 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 leaf tobacco particles with a D90 of 600 ⁇ m or 800 ⁇ m were used.
  • a tobacco sheet was produced and evaluated in the same manner as in Reference Example A1 except that leaf tobacco particles with a D90 of 80 ⁇ m or 200 ⁇ m were used.
  • a tobacco sheet was produced and evaluated in the same manner as in Reference Example A1 except that leaf tobacco particles with a D90 of 200 ⁇ m were used and the water content of the wet powder was 50 WB mass%.
  • a tobacco sheet was produced and evaluated in the same manner as in Reference Example A1 except that leaf tobacco particles with a D90 of 200 ⁇ m were used and the water content of the wet powder was 30 or 40 WB mass%.
  • Table A3 shows the results. "Amount of water in wet powder" in Table A3 corresponds to the amount of water based on the mass ratio in the wet powder in Table A1.
  • a tobacco sheet with a sheet density of 0.75 g/cm 3 or 0.96 g/cm 3 (Reference Example A5) and a tobacco sheet with a sheet density of 1.19 g/cm 3 (Reference Comparative Example A5) were produced by the casting method in accordance with a routine method.
  • the tobacco sheets were subjected to a smoking test.
  • a smoking article including the sheet of Reference Example A5 was superior to a smoking article including the sheet of Reference Comparative Example A5 in terms of delivery of a flavor component at the beginning of inhalation. It is surmised from this that smoking articles including the tobacco sheets prepared in Reference Examples A1 to A3 also exhibit good delivery of a flavor component at the beginning of inhalation.
  • a non-combustion heating-type smoking system as illustrated in Fig. 3 was prepared. However, an internal-heating-type smoking system was used in this example. A Cambridge filter was then connected to the mouth end. 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 20A. The system was subjected to a smoking test using a smoking machine.
  • the sample was automatically smoked with an automatic smoking machine (R-26 manufactured by Borgwaldt KC Inc.) under the conditions of a puff volume of 27.5 ml/s, a puff time of 2 s/puff, a puff frequency of 2 puff/min, and 14 puffs, and granular matter in tobacco smoke for each puff was collected with a Cambridge filter (CM-133 manufactured by Borgwaldt KC Inc.).
  • the Cambridge filter after the smoking test was shaken in a 10 ml of methanol (manufactured by Wako Pure Chemical Industries, Ltd., special grade) to prepare an analytical sample.
  • 1 ⁇ L of the analytical sample was taken with a microsyringe and was analyzed by gas chromatography-mass spectrometry (GC-MSD manufactured by Agilent, GC: 7890A, MS: 5975C).
  • the tobacco sheet was cut into 55 mm square, and the mass (dry mass) was measured to calculate the mass per unit area (basis weight).
  • the thickness was measured with a thickness gauge (manufactured by Mitutoyo Corporation), and the density was calculated from the basis weight and the thickness.
  • 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 A5-1 except that leaf tobacco particles with a D90 of 80 ⁇ m were used.
  • Table A3 shows the results. [Table A3] Table A3 Physical properties of sheet Raw material D90 Amount of water in wet powder Density Film production method ⁇ m WB mass% g/cm 3 Reference Comparative Example A1 80 40 1.20 lamination method Reference Comparative Example A2 200 40 1.11 Reference Example A1 400 40 0.95 Reference Example A2 600 40 0.74 Reference Example A3 800 40 0.76 Reference Comparative Example A3 200 30 1.24 Reference Comparative Example A4 200 40 1.11 Reference Example A4 200 50 0.91 Reference Example A5-1 300 80 0.83 casting method Reference Example A6 80 80 0.99
  • a tobacco leaf was ground with a grinder (ACM-5 manufactured by Hosokawa Micron Corporation) so as to have a D90 of 70 ⁇ m to produce leaf tobacco particles. D90 was measured with Mastersizer (manufactured by malvern).
  • the leaf tobacco particles and a binder carboxymethyl cellulose (trade name Sunrose F30MC manufactured by Nippon Paper Industries Co., Ltd.) were dry-blended using a mixer. Glycerin as a humectant and water as a medium were then added to the dry blend and were mixed using a mixer to prepare a wet powder.
  • Table B1 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 a sheet according to the present embodiment.
  • the sheet thus produced was allowed to stand for 48 hours under the conditions of a room temperature of 22°C and a relative humidity of 60%.
  • the sheet was then provided with a plurality of apertures with a perforation size of 0.2 mm ⁇ 0.2 mm using a laser processing apparatus (manufactured by TROTEC).
  • the apertures were disposed at regular intervals of 0.4 mm.
  • Table B2 shows detailed conditions.
  • the air permeability and release profile of the processed tobacco sheet thus produced were evaluated by the methods described later.
  • Table B2 and Fig. 5 show the results.
  • the vertical axis of Fig. 5 represents the nicotine content normalized by the nicotine content per flavor smoking article. That is, the value x/y is plotted on the vertical axis, wherein x (g) denotes the nicotine content detected in one puff, and y (g) denotes the nicotine content per article (the total nicotine content in 1 to 14 puffs).
  • the sheet after the perforation was allowed to stand for 48 hours under the conditions of a room temperature of 22°C and a relative humidity of 60%.
  • the sheet was then cut into a size of 40 mm ⁇ 240 mm and was subjected to measurement with the air permeability measuring device (PPM1000M manufactured by Cerulean) under measurement conditions of a pressure difference of 1 kPa using a 2-cm 2 circular measuring head.
  • the measurement environment was a room temperature of 22°C and a relative humidity of 60%.
  • the air permeability was calculated as an air flow rate (cm 3 ) per cm 2 per minute at a pressure difference of 1 kPa.
  • Sheets with air permeability as shown in Table B2 were prepared by changing the laser processing conditions. A roll for smoking test was prepared and evaluated in the same manner as in Reference Example B 1 except that each sheet was used and the filling ratio was changed. Fig. 5 shows the results.
  • a smoking article containing the sheet of the present embodiment can have a good profile with high delivery in an initial puff and with delivery comparable to known sheets even in the latter half.

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  • Chemical & Material Sciences (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • General Chemical & Material Sciences (AREA)
  • Health & Medical Sciences (AREA)
  • General Health & Medical Sciences (AREA)
  • Toxicology (AREA)
  • Manufacture Of Tobacco Products (AREA)
EP22875513.8A 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 Pending EP4410119A1 (en)

Applications Claiming Priority (4)

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PCT/JP2021/036396 WO2022071570A1 (ja) 2020-10-02 2021-10-01 喫煙用組成物シート
PCT/JP2021/036389 WO2022071563A1 (ja) 2020-10-02 2021-10-01 たばこシート
JP2021170059 2021-10-18
PCT/JP2022/025741 WO2023053634A1 (ja) 2021-10-01 2022-06-28 非燃焼加熱型香味吸引器用たばこシート及びその製造方法、非燃焼加熱型香味吸引器、並びに非燃焼加熱型香味吸引システム

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EP22876553.3A Pending EP4410124A1 (en) 2021-10-01 2022-09-30 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

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JP6638203B2 (ja) * 2014-03-26 2020-01-29 大日本印刷株式会社 表面加工フィルムの製造方法
US11044936B2 (en) * 2015-05-29 2021-06-29 Philip Morris Products S.A. Method of making tobacco cut filler
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
JP7155647B2 (ja) * 2018-06-20 2022-10-19 大日本印刷株式会社 離型シートおよび樹脂製物品
EP3862156A4 (en) * 2018-10-04 2021-12-01 Toppan Printing Co., Ltd. SHEET FOR CONCRETE DECORATION PROCESS AND DECORATIVE STAMPING ELEMENT FOR CONCRETE
KR20210070289A (ko) * 2018-10-08 2021-06-14 필립모리스 프로덕츠 에스.에이. 신규한 정향-함유 에어로졸 발생 기재
CA3116960A1 (en) 2018-12-20 2020-06-25 Philip Morris Products S.A. Aerosol generating article with light hollow segment
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
JP2019213895A (ja) * 2019-08-08 2019-12-19 住友ベークライト株式会社 医療用包装シートの原反ロールおよび医療用包装材

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KR20240067127A (ko) 2024-05-16
JP7678888B2 (ja) 2025-05-16
WO2023054691A1 (ja) 2023-04-06
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CN117677304A (zh) 2024-03-08
US20240245091A1 (en) 2024-07-25
EP4410124A1 (en) 2024-08-07
CN118119289A (zh) 2024-05-31
WO2023053634A1 (ja) 2023-04-06
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