EP4223148A1 - Tabakfolie - Google Patents

Tabakfolie Download PDF

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Publication number
EP4223148A1
EP4223148A1 EP21875857.1A EP21875857A EP4223148A1 EP 4223148 A1 EP4223148 A1 EP 4223148A1 EP 21875857 A EP21875857 A EP 21875857A EP 4223148 A1 EP4223148 A1 EP 4223148A1
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EP
European Patent Office
Prior art keywords
sheet
tobacco
segment
weight
mixture
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
EP21875857.1A
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English (en)
French (fr)
Inventor
Kotaro SENDA
Kenta Mitsuchi
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Japan Tobacco Inc
Original Assignee
Japan Tobacco Inc
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Filing date
Publication date
Application filed by Japan Tobacco Inc filed Critical Japan Tobacco Inc
Publication of EP4223148A1 publication Critical patent/EP4223148A1/de
Pending legal-status Critical Current

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    • A—HUMAN NECESSITIES
    • A24—TOBACCO; CIGARS; CIGARETTES; SIMULATED SMOKING DEVICES; SMOKERS' REQUISITES
    • A24B—MANUFACTURE OR PREPARATION OF TOBACCO FOR SMOKING OR CHEWING; TOBACCO; SNUFF
    • A24B3/00—Preparing tobacco in the factory
    • A24B3/14—Forming reconstituted tobacco products, e.g. wrapper materials, sheets, imitation leaves, rods, cakes; Forms of such products
    • A—HUMAN NECESSITIES
    • A24—TOBACCO; CIGARS; CIGARETTES; SIMULATED SMOKING DEVICES; SMOKERS' REQUISITES
    • A24B—MANUFACTURE OR PREPARATION OF TOBACCO FOR SMOKING OR CHEWING; TOBACCO; SNUFF
    • A24B15/00—Chemical features or treatment of tobacco; Tobacco substitutes, e.g. in liquid form
    • A24B15/10—Chemical features of tobacco products or tobacco substitutes
    • A24B15/12—Chemical features of tobacco products or tobacco substitutes of reconstituted tobacco
    • A24B15/14—Chemical features of tobacco products or tobacco substitutes of reconstituted tobacco made of tobacco and a binding agent not derived from tobacco
    • A—HUMAN NECESSITIES
    • A24—TOBACCO; CIGARS; CIGARETTES; SIMULATED SMOKING DEVICES; SMOKERS' REQUISITES
    • A24D—CIGARS; CIGARETTES; TOBACCO SMOKE FILTERS; MOUTHPIECES FOR CIGARS OR CIGARETTES; MANUFACTURE OF TOBACCO SMOKE FILTERS OR MOUTHPIECES
    • A24D1/00—Cigars; Cigarettes
    • A24D1/20—Cigarettes specially adapted for simulated smoking devices

Definitions

  • the present invention relates to a tobacco sheet.
  • Patent Literature PTL 1 1
  • a casting process is generally a process of obtaining a tobacco sheet by mixing necessary components to prepare a slurry, placing the slurry on a substrate, forming into a wet sheet (coating film) having a certain thickness by using a blade, and drying the wet sheet.
  • a papermaking process is generally a process of producing a tobacco sheet through steps of extracting water-soluble components from tobacco leaves, separating into the resulting extract and residue, forming fibers by beating and defibrating the residue, forming into a sheet in the same manner as for making paper, drying the sheet, and adding the extract back to the dried sheet.
  • a sheet produced through a papermaking process is formed from fibrous tobacco leaf residue and thus exhibits excellent strength but an unsatisfactory level of surface smoothness.
  • a sheet produced through a casting process has surface air bubbles formed, for example, due to vapor generation during drying since a wet sheet rich in water is dried.
  • the ends of a wet sheet become less dense through water evaporation and shrinking of the wet sheet, the sheet exhibits an unsatisfactory level of smoothness.
  • fibers are added in these processes to ensure the strength, but such fibers tangle together to form a mass, thereby also impairing smoothness on sheet surfaces.
  • tobacco sheets are used for smoking articles after processing, such as forming and cutting.
  • the object of the present invention is to provide a tobacco sheet excellent in processability.
  • the present inventors have found that a tobacco sheet having a specific surface roughness resolves the above-mentioned problems. In other words, the object is attained by the present invention below.
  • a tobacco sheet is a sheet to be used for a smoking article and contains at least a tobacco material and a binder.
  • a binder is an adhesive for binding a tobacco material together or for binding a tobacco material and other components.
  • common binders may be used.
  • binders include polysaccharides, such as guar gum and xanthan gum, and cellulose derivatives, such as CMC (carboxymethyl cellulose), CMC-Na (carboxymethyl cellulose sodium salt), and HPC (hydroxypropyl cellulose).
  • the upper limit for the binder content is preferably 6 weight% or less on dry weight basis (weight after removing water contained, the same applies hereinafter) relative to the dry weight of a tobacco sheet.
  • the lower limit is preferably 1 weight% or more and more preferably 3 weight% or more.
  • Exemplary binders include polysaccharides, proteins, and synthetic polymers. Hereinafter, concrete examples of these binders will be described. In the present invention, these binders may also be used in combination.
  • Organic acid esters cellulose acetate, cellulose formate, cellulose propionate, cellulose butyrate, cellulose benzoate, cellulose phthalate, tosyl cellulose
  • Inorganic acid esters cellulose nitrate, cellulose sulfate, cellulose phosphate, cellulose xanthate
  • Guar gum tara gum, locust bean gum, tamarind seed gum, pectin, gum arabic, gum tragacanth, gum karaya, gum ghatti, arabinogalactan, flaxseed gum, cassia gum, psyllium seed gum, artemisia seed gum
  • Carrageenan agar, alginic acid, propylene glycol alginate, furcellaran, Gloiopelfis furcata extract
  • Xanthan gum gellan gum, curdlan, pullulan, Agrobacterium succinoglycan, welan gum, Macrophomopsis gum, rhamsan gum
  • Starch sodium starch glycolate, pregelatinized starch, dextrin
  • Tobacco materials are materials derived from tobacco, and concrete examples include shreds of dry tobacco leaves and pulverized leaf tobacco.
  • Pulverized leaf tobacco refers to particles obtained through pulverization of leaf tobacco. Such pulverized leaf tobacco may have the particle size D90 set to 20 to 1000 ⁇ m, for example, and preferably 50 to 500 ⁇ m. Moreover, the average particle size D50 may be set to preferably 20 to 1000 ⁇ m and more preferably 50 to 500 ⁇ m. Pulverization may be performed using a common grinding mill as dry grinding or wet grinding. The resulting pulverized leaf tobacco is thus referred to as leaf tobacco particles as well.
  • the particle size is obtained by a laser diffraction/scattering method and is concretely measured using a laser diffraction particle size analyzer (LA-950 from Horiba, Ltd., for example).
  • LA-950 laser diffraction particle size analyzer
  • the type of tobacco is not limited, and flue-cured, burley, oriental, and domestic may be used, and others such as Nicotiana tabacum varieties or Nicotiana rustica varieties, for example, may be used.
  • the amount of tobacco material in a tobacco sheet is not particularly limited but is preferably 50 to 95 weight% and more preferably 60 to 90 weight% on dry weight basis.
  • a tobacco sheet may contain an aerosol former.
  • An aerosol former is a material that generates an aerosol through vaporization upon heating and subsequent cooling or that generates an aerosol through atomization.
  • a common aerosol former may be used, and examples include those having a boiling point above 100°C, such as polyhydric alcohols such as glycerol, propylene glycol (PG); triethyl citrate (TEC); and triacetin.
  • the amount of aerosol former in a tobacco sheet is preferably 1 to 40 weight% and more preferably 10 to 20 weight% on dry weight basis (weight after removing water contained, the same applies hereinafter). When the amount of aerosol former exceeds the upper limit, the production of tobacco sheets could become difficult. Meanwhile, when the amount is less than the lower limit, smoky feeling could deteriorate.
  • a tobacco sheet may contain an emulsifier.
  • An emulsifier enhances affinity between an aerosol former, which is lipophilic, and a tobacco material, which is hydrophilic. For this reason, the addition of an emulsifier is effective particularly when a lipophilic aerosol former is used.
  • Any common emulsifier may be used, and examples include emulsifiers having HLB of 8 to 18.
  • the amount of emulsifier is not particularly limited but is preferably 0.1 to 3 parts by weight and more preferably 1 to 2 parts by weight on dry weight basis relative to 100 parts by weight of a tobacco sheet.
  • a tobacco sheet of the present invention in an embodiment, does not contain fibers derived from tobacco or fibers derived from materials other than tobacco (cellulose, for example). In this embodiment, it is possible to avoid undesirable effects on smoking flavor, such as odd taste, exerted by these fibers. However, since completely excluding such fibers is not practical, the amount of these fibers in a tobacco sheet is preferably 1.0 weight% or less and more preferably 0.5 weight% or less on dry weight basis. Further, a tobacco sheet of the present invention, in another embodiment, contains 0.5 to 2.0 weight% in total of fibers derived from tobacco or fibers derived from materials other than tobacco. In this embodiment, these fibers enhance the strength of the tobacco sheet, resulting in excellent balance between smoking flavor and strength. In the present invention, fibers derived from tobacco indicate pulp formed through beating of a tobacco raw material using a grinder or the like and are thus different from the above-described tobacco materials.
  • a tobacco sheet may contain a flavor.
  • a flavor is a substance that provides aroma or taste. Such a flavor may be a natural flavor or a synthetic flavor. One flavor or a mixture of a plurality of flavors may be used. Any flavor commonly used for smoking articles may be used, and concrete examples will be described hereinafter.
  • a flavor may be incorporated into a sheet for a smoking article in an amount such that the smoking article can provide preferable aroma or taste.
  • the amount in a tobacco sheet is preferably 1 to 30 weight% and more preferably 2 to 20 weight%.
  • exemplary flavors include, but are not particularly limited to, acetanisole, acetophenone, acetylpyrazine, 2-acetylthiazole, alfalfa extract, amyl alcohol, amyl butyrate, trans-anethole, star anise oil, apple juice, Peru balsam oil, beeswax absolute, benzaldehyde, benzoin resinoid, benzyl alcohol, benzyl benzoate, benzyl phenylacetate, benzyl propionate, 2,3-butanedione, 2-butanol, butyl butyrate, butyric acid, caramel, cardamom oil, carob absolute, ⁇ -carotene, carrot juice, L-carvone, ⁇ -caryophyllene, cassia bark oil, cedarwood oil, celery seed oil, chamomile oil, cinnamaldehyde, cin
  • a tobacco sheet has Sa of 5 to 30 ⁇ m on at least one surface.
  • Sa is an indicator of surface roughness.
  • a tobacco sheet of the present invention when having Sa in this range, exhibits excellent processability and reduces detached shreds from the surface.
  • Sa is more preferably 10 to 25 ⁇ m and further preferably 10 to 20 ⁇ m.
  • a tobacco sheet of the present invention preferably has Sa in the above-mentioned range on both the surfaces. Sa is measured by a common method and is preferably measured using a microscope (VK-X 100 from Keyence Corporation, for example) through the following procedure of:
  • the thickness of a tobacco sheet is not limited but is preferably 20 to 2000 ⁇ m, more preferably 100 to 1500 ⁇ m, and further preferably 100 to 1000 ⁇ m in an embodiment.
  • a tobacco sheet has a tensile elongation of preferably 2.0% or more, more preferably 3.0% or more, and further preferably 5.0% or more.
  • the upper limit for the tensile elongation is not limited but is typically about 15% or less.
  • the tobacco sheet has a tensile stress of preferably 2.0 N/mm or more, more preferably 2.5 N/mm or more, and further preferably 3.0 N/mm or more.
  • the smoothness of a tobacco sheet affects handling properties of a product.
  • a smoking article using a tobacco sheet poor in smoothness could generate dust or so-called detached shreds during or after use, thereby causing trouble in handling, such as adhesion to clothing.
  • a tobacco sheet of the present invention exhibits excellent smoothness and thus can suppress the occurrence of such trouble.
  • a tobacco segment used for a smoking article can be produced from a tobacco sheet.
  • the tobacco segment includes, in an embodiment, a tubular wrapper and a tobacco sheet spirally rolled and packed within the wrapper (see Fig. 1 (A) ).
  • 20A is a tobacco segment
  • 1 is a tobacco sheet
  • 22 is a wrapper, which is typically paper.
  • the tobacco segment preferably has a rod shape, and the length may be set to about 15 to 80 mm and the diameter to about 5 to 10 mm.
  • the tobacco segment 20A in Fig. 1 (A) may also be cut to have an aspect ratio (length/diameter) of about 0.5 to 1.2 (see Fig. 1 (B) ).
  • the tobacco segment 20A includes, in another embodiment, a tubular wrapper 22 and a tobacco sheet 1 folded and packed within the wrapper.
  • the ridges formed through folding extend almost parallel to the longitudinal direction of the segment (see Fig. 1 (C) ).
  • the tobacco segment 20A preferably has a rod shape, and the length may be set to about 15 to 80 mm and the diameter to about 5 to 10 mm.
  • the tobacco sheet 1 has preferably been processed in advance by surface creasing, such as pleating or crimping.
  • the tobacco segment 20A includes, in another embodiment, a tubular wrapper 22 and a cut piece 1c of a tobacco sheet, which is packed within the wrapper (see Fig. 1 (D) ).
  • the tobacco segment 20A preferably has a rod shape, and the length may be set to about 15 to 80 mm and the diameter to about 5 to 10 mm.
  • the size of a cut piece is not limited, but the length of the longest side may be set to about 2 to 20 mm and the width to about 0.5 to 1.5 mm, for example.
  • the tobacco segment 20A includes, in another embodiment, a tubular wrapper 22 and strand-type shreds packed within the wrapper (see Fig. 1 (E) ).
  • strand-type shreds are packed with the longitudinal direction almost parallel to the longitudinal direction of the wrapper 22.
  • the width of a strand-type shred may be set to about 0.5 to 1.5 mm.
  • the tobacco segment 20A includes, in another embodiment, a tubular wrapper 22 and tobacco shred filler randomly packed within the wrapper. Tobacco shreds are shredded products and thus differ from strand-type shreds.
  • a tobacco sheet can be produced by any method but is preferably produced by a method including the following steps of:
  • a sheet formed as above under applied pressure is referred to as "pressure-formed sheet,” and such "pressure-formed sheets” encompass a “laminate sheet” and an “extruded sheet” as described hereinafter.
  • a laminate sheet is a sheet obtained by rolling a mixture once or more using a roller into a target thickness, followed by drying to a target water content.
  • An extruded sheet is a sheet obtained by extruding a mixture from a T die or the like at a target thickness, followed by drying to a target water content.
  • a pressure-formed sheet may be produced by rolling and extrusion in combination. For example, a mixture may be formed into a sheet through extrusion, further followed by rolling.
  • a tobacco material, a binder, and a medium are kneaded.
  • An aerosol former, an emulsifier, or a flavor may also be added as necessary.
  • the amounts of the respective components to be added are adjusted to attain the above-mentioned amounts.
  • the medium preferably primarily contains, for example, water or a water-soluble organic solvent having a boiling point below 100°C, such as ethanol, and is more preferably water or ethanol.
  • This step can be performed by kneading the respective components but is preferably performed through 1) pulverization of a raw material (classified leaf tobacco, for example), 2) preparation of wet powder, and 3) kneading.
  • a raw material is preferably coarsely crushed, followed by fine grinding using a grinding mill (ACM-5 from Hosokawa Micron Corporation, for example).
  • the particle size D90 after fine grinding is preferably 20 to 1000 ⁇ m.
  • the particle size is measured using a laser diffraction particle size analyzer, such as Mastersizer (from Malvern Panalytical Ltd.).
  • the pulverized tobacco raw material (leaf tobacco particles, for example) is added with a binder and, as necessary, additives, such as a flavor and a lipid, and mixed. Since the mixing is preferably dry blending, a mixer is preferably used as a mixing apparatus. Subsequently, the resulting dry blend is added with water or another medium and, as necessary, glycerol or another aerosol former and mixed using a mixer to prepare wet powder (powder in the wet state).
  • the amount of medium in the wet powder may be set to 20 to 80 weight% and preferably 20 to 40 weight% and is appropriately adjusted by step 2. For example, the amount of medium may be set to 20 to 50 weight% in the case of performing rolling in step 2 and to 20 to 80 weight% in the case of performing extrusion.
  • the solid concentration of wet powder is preferably 50 to 90 weight%.
  • the wet powder is kneaded using a kneader (DG-1 from Dalton Corporation, for example).
  • DG-1 kneader
  • the kneading is preferably performed until the medium permeates through the entire powder.
  • kneading is preferably performed until a mixture becomes uniform in color under visual observation.
  • a wet sheet is prepared by rolling the mixture (wet powder) or extruding the mixture from a die.
  • the mixture is sandwiched between two substrate films and rolled into a predetermined thickness (over 100 ⁇ m) by passing through a pair of rollers using a calendaring machine (from Yuri Roll Machine Co., Ltd., for example), thereby obtaining a laminate in which a wet sheet exists between two substrate films.
  • the substrate films are preferably non-adhesive films, such as fluoropolymer films. Such rolling using rollers may be performed a plurality of times.
  • a wet sheet on a substrate by extruding the mixture (wet powder) from a die (preferably T die) provided with a predetermined gap.
  • a die preferably T die
  • a common material such as a glass sheet, a metal sheet, or a plastic sheet, may be used as the substrate.
  • a common extruder can be used for extrusion.
  • the wet sheet is dried.
  • this step can be performed for a laminate through the following procedure. 1) Either substrate film is released. 2) The resulting laminate is dried using a circulation dryer. The drying temperature may be room temperature but is preferably 50°C to 100°C, and the drying time may be set to 1 to 2 minutes. 3) Subsequently, a tobacco sheet is obtained by releasing the other substrate film and further drying under the above-mentioned conditions. By performing drying like this, it is possible to avoid attachment of the tobacco sheet to other substrates. A tobacco sheet thus obtained is also referred to as "laminate sheet.” Such a laminate sheet is preferable since the sheet exhibits surface smoothness and can suppress generation of detached shreds when comes into contact with other members. Further, this method is suitable for the production of a sheet of 300 ⁇ m or less.
  • extrusion the wet sheet on a substrate is dried with air or heating.
  • the drying conditions are as mentioned above.
  • a tobacco sheet thus obtained is also referred to as "extruded sheet.”
  • extruded sheet Such an extruded sheet is preferable since the sheet exhibits surface smoothness and can suppress generation of detached shreds when comes into contact with other members. This method is suitable for the production of a sheet of 200 ⁇ m or more.
  • Exemplary smoking articles include flavor inhaler articles, in which a user tastes a flavor through inhalation, and smokeless tobacco (smokeless smoking articles), in which a user places the product directly in the nasal or oral cavity to taste a flavor.
  • Flavor inhaler articles are broadly divided into non-combustion smoking articles and combustion-type smoking articles represented by conventional cigarettes.
  • a tobacco sheet of the present invention is suitable for flavor inhaler articles.
  • Exemplary combustion-type flavor inhaler articles include cigarettes, pipes, kiseru or Japanese smoking pipes, cigars, and cigarillos.
  • a heat-not-burn flavor inhaler article may be heated by a heating device separate from the article or may be heated by a heating device integrated with the article.
  • a heating device separate from the article or may be heated by a heating device integrated with the article.
  • a heat-not-burn flavor inhaler article and a heating device are also collectively referred to as "heat-not-burn smoking system.”
  • an exemplary heat-not-burn smoking system will be described with reference to Figs. 2 and 3 .
  • Fig. 2 is a schematic cross-sectional view of an exemplary heat-not-burn smoking system and illustrates the state before inserting a heater 12 into a tobacco segment 20A of a heat-not-burn flavor inhaler article 20. During use, the heater 12 is inserted into the tobacco segment 20A.
  • Fig. 3 is a cross-sectional view of a heat-not-burn flavor inhaler article 20.
  • the heat-not-burn smoking system includes a heat-not-burn flavor inhaler article 20 and a heating device 10 for heating the tobacco segment 20A from the inside.
  • the heat-not-bum smoking system is not limited to the structure in Fig. 2 .
  • the heating device 10 illustrated in Fig. 2 includes a body 11 and a heater 12.
  • the body 11 may include a battery unit and a control unit.
  • the heater 12 may be an electric resistance heater and is inserted into the tobacco segment 20A to heat the tobacco segment 20A.
  • a tobacco sheet of the present invention is highly effective when the tobacco segment 20A is heated from the inside as illustrated in Fig. 2 .
  • Such a heating mode has conventionally tended to generate detached shreds due to direct contact between a tobacco sheet and a heater. Meanwhile, a tobacco sheet of the present invention is less likely to generate detached shreds even in this case. For this reason, a tobacco sheet of the present invention is further effective in an internal heating mode.
  • the embodiment of the heat-not-burn flavor inhaler article 20 is not limited to this. In another embodiment, the tobacco segment 20A is heated from the outside.
  • the heating temperature by the heating device 10 is not particularly limited but is preferably 400°C or lower, more preferably 50°C to 400°C, and further preferably 150°C to 350°C.
  • the heating temperature means the temperature of the heater 12 in the heating device 10.
  • the heat-not-burn flavor inhaler article 20 (hereinafter, simply referred to as "flavor inhaler article 20") has a cylindrical shape.
  • the flavor inhaler article 20 has a circumferential length of preferably 16 mm to 27 mm, more preferably 20 mm to 26 mm, and further preferably 21 mm to 25 mm.
  • the entire length (length in the horizontal direction) of the flavor inhaler article 20 is not particularly limited but is preferably 40 mm to 90 mm, more preferably 50 mm to 75 mm, and further preferably 50 mm to 60 mm.
  • the flavor inhaler article 20 comprises a tobacco segment 20A, a filter section 20C that forms a mouthpiece, and a connection section 20B that connects the tobacco segment 20A and the filter section 20C.
  • the tobacco segment 20A is cylindrical.
  • the entire length (length in the axial direction) is, for example, preferably 5 to 100 mm, more preferably 10 to 50 mm, and further preferably 10 to 25 mm.
  • the cross-sectional shape of the tobacco segment 20A is not particularly limited but may be circular, elliptic, or polygonal, for example.
  • the tobacco segment 20A includes a tobacco sheet or a material derived therefrom 21 and a wrapper 22 wrapped therearound.
  • the wrapper 22 may be a tobacco sheet 1 of the present invention.
  • the filter section 20C is cylindrical.
  • the filter section 20C includes a rod-shaped first segment 25 filled with cellulose acetate fibers and a rod-shaped second segment 26 similarly filled with cellulose acetate fibers.
  • the first segment 25 is positioned on the side of the tobacco segment 20A.
  • the first segment 25 may have a hollow portion.
  • the second segment 26 is positioned on the mouth side.
  • the second segment 26 is solid.
  • the first segment 25 comprises a first filling layer (cellulose acetate fibers) 25a and an inner plug wrapper 25b wrapped around the first filling layer 25a.
  • the second segment 26 comprises a second filling layer (cellulose acetate fibers) 26a and an inner plug wrapper 26b wrapped around the second filling layer 26a.
  • the first segment 25 and the second segment 26 are joined by an outer plug wrapper 27.
  • the outer plug wrapper 27 is bonded to the first segment 25 and the second segment 26 using a vinyl acetate emulsion adhesive, for example.
  • the length of the filter section 20C may be set to 10 to 30 mm, for example, the length of the connection section 20B to 10 to 30 mm, for example, the length of the first segment 25 to 5 to 15 mm, for example, and the length of the second segment 26 to 5 to 15 mm, for example.
  • the lengths of these individual segments are examples and may be changed appropriately depending on production feasibility, required quality, the length of the tobacco segment 20A, and so forth.
  • the first segment 25 (center hole segment) comprises a first filling layer 25a having one or more hollow portions and an inner plug wrapper 25b that covers the first filling layer 25a.
  • the first segment 25 acts to enhance the strength of the second segment 26.
  • the first filling layer 25a of the first segment 25 is, for example, cellulose acetate fibers packed at high density.
  • the cellulose acetate fibers are, for example, added with 6 to 20 weight%, based on the weight of cellulose acetate, of a plasticizer including triacetin and hardened.
  • the hollow portion of the first segment 25 has an inner diameter of ⁇ 1.0 to ⁇ 5.0 mm, for example.
  • the first filling layer 25a of the first segment 25 may be formed, for example, at a relatively high filling density of fibers or at a filling density of fibers comparable to the second filling layer 26a of the second segment 26 described hereinafter. Consequently, air and an aerosol flow only through the hollow portion and hardly flow within the first filling layer 25a during inhalation. For example, when it is desirable to suppress reduction in aerosol components through filtration in the second segment 26, it is also possible to shorten the second segment 26 and extend the first segment 25 by the corresponding length.
  • Replacing the shortened second segment 26 by the first segment 25 is effective for increasing the amount of aerosol components to be delivered. Since the first filling layer 25a of the first segment 25 is a fiber filling layer, the touch from the outside during use does not cause any discomfort to a user.
  • the second segment 26 comprises a second filling layer 26a and an inner plug wrapper 26b that covers the second filling layer 26a.
  • the second segment 26 (filter segment) is filled with cellulose acetate fibers at common density and thus exhibits typical filtration performance of aerosol components.
  • the first segment 25 and the second segment 26 may be different in filtration performance of an aerosol (mainstream smoke) released from the tobacco segment 20A. Further, at least either of the first segment 25 and the second segment 26 may contain a flavor.
  • the structure of the filter section 20C is optional and may be a structure having a plurality of segments as mentioned above or a structure of a single segment. In the case in which the filter section 20C is formed from one segment, the filter section 20C may comprise either the first segment or the second segment.
  • connection section 20B is cylindrical.
  • the connection section 20B includes a cylindrically formed paper tube 23 of cardboard, for example.
  • the connection section 20B may be filled with a cooling member for cooling an aerosol.
  • Exemplary cooling members include a polymer sheet of polylactic acid, for example, and such a sheet may be folded and packed therein. Further, a support may be provided between the tobacco segment 20A and the connection section 20B for suppressing the displacement of the tobacco segment 20A. Such a support may be formed of a common material, such as a center hole filter like the first segment 25.
  • a wrapper 28 is cylindrically wrapped around the tobacco segment 20A, the connection section 20B, and the filter section 20C to join these components integrally. On either side (inner side) of the wrapper 28, almost the whole surface or the whole surface excluding near a ventilation hole portion 24 is coated with a vinyl acetate emulsion adhesive. A plurality of ventilation hole portions 24 are formed by laser processing from the outside after the tobacco segment 20A, the connection section 20B, and the filter section 20C are integrated by the wrapper 28.
  • the ventilation hole portion 24 includes two or more penetrating holes in the thickness direction of the connection section 20B. Two or more penetrating holes are formed in radial arrangement when viewed from the extension of the central axis of the flavor inhaler article 20.
  • the ventilation hole portion 24 is provided on the connection section 20B in this embodiment but may be provided on the filter section 20C.
  • two or more penetrating holes of the ventilation hole portion 24 are provided aligning in one row or on one ring at certain intervals in this embodiment but may be provided aligning in two rows or on two rings at certain intervals. Further, the ventilation hole portion 24 in one or two rows may be provided aligning discontinuously or irregularly. When a user inhales with the mouthpiece in the mouth, external air is taken into mainstream smoke through the ventilation hole portion 24. Nevertheless, the ventilation hole portion 24 need not necessarily be provided.
  • Tobacco leaves were pulverized to attain D90 of 204 ⁇ m and D50 of 66 ⁇ m using a grinding mill (ACM-5 from Hosokawa Micron Corporation), thereby yielding leaf tobacco particles.
  • the D90 and D50 were measured using Mastersizer (from Malvern Panalytical Ltd.).
  • the leaf tobacco particles and Sunrose F20HC cellulose ether from Nippon Paper Industries Co., Ltd.
  • the resulting dry blend was added with glycerol as an aerosol former and water as a medium and mixed using a mixer to prepare wet powder.
  • the composition of the respective components is as shown in Table 1-1.
  • the wet powder was kneaded six times at room temperature using a kneader (DG-1 from Dalton Corporation) to yield a mixture.
  • DG-1 kneader
  • a T die was used as a die, and the screw rotation speed was set to 38.5 rpm.
  • the wet powder was sandwiched between two Teflon TM films (Nitoflon ® No. 900UL from Nitto Denko Corporation) and rolled at four stages using a calendaring machine (from Yuri Roll Machine Co., Ltd.) to attain a predetermined thickness (over 100 ⁇ m), thereby preparing a 105 ⁇ m-thick laminate having a layered structure of film/wet sheet/film.
  • the roll gaps for the first to the fourth stages were respectively set to 650 ⁇ m, 330 ⁇ m, 180 ⁇ m, and 5 ⁇ m.
  • the roll gap for the fourth stage is smaller than the thickness of the finally obtained sheet. This is because the sheet released from the pressure between the rollers expanded near the final thickness.
  • the laminate after releasing one Teflon TM film therefrom, was dried at 80°C for 1 to 2 minutes using a circulation dryer. Subsequently, a wet sheet after releasing the other film was dried under the same conditions to produce a tobacco sheet of the present invention, and the tobacco sheet was evaluated.
  • Table 1-1 Composition in Example 1 Pulverized tobacco leaves Glycerol Binder Water Feed weight proportion [WB weight%] 65 11 2 22 Water content of each component [weight%] 10 13 5.4 100 Feed weight proportion [DB weight%] (proportion in finished sheet composition) 83 14 3 - Weight in wet powder [g] 180.7 31.54 6.2 61.5 Weight proportion in wet powder [WB weight%] 64.5 11.3 2.2 22.0 DB: dry-based WB: wet-based
  • weight in wet powder represents the dry weight for the pulverized tobacco leaves, glycerol, and the binder and represents for water the total amount of the feed weight and the weight of water contained in the pulverized tobacco leaves, glycerol, and the binder.
  • Tobacco sheets were produced and evaluated in the same manner as Example 1 except for respectively using, as a binder, Sunrose F30MC and Sunrose F20LC in place of Sunrose F20HC (cellulose ether from Nippon Paper Industries Co., Ltd.).
  • a tobacco sheet was produced and evaluated in the same manner as Example 1 except for using, as a binder, Sunrose F30MC in place of Sunrose F20HC (cellulose ether from Nippon Paper Industries Co., Ltd.) and changing the amount of the binder to the amount shown in Table 3 and the amount of glycerol to 15.5 DB weight% as the feed weight proportion.
  • Leaf tobacco particles having D90 of 204 ⁇ m and D50 of 66 ⁇ m were obtained in the same manner as Example 1.
  • the same components as Example 1 and pulp were mixed using a mixer to yield a mixture.
  • a tobacco sheet was produced using the resulting mixture by a common casting process.
  • a tobacco sheet was produced by a common papermaking process, specifically, by: extracting, with water, water-soluble components of a tobacco raw material; mixing the resulting extraction residue, pulp, and water; beating the resulting mixture using a grinder; forming into a sheet using a papermaking machine; drying the sheet; and adding the extract and glycerol to the sheet.
  • the resulting tobacco sheet was evaluated by the same methods as Example 1.
  • the composition of the sheet is shown in Table 2. Further, the evaluation results of the tobacco sheets produced in the examples above are shown in Table 3.
  • FIG. 2 An internal-heating non-combustion smoking system illustrated in Fig. 2 was prepared.
  • the tobacco sheet produced in each example was cut into shreds.
  • the shreds were packed within a wrapper 22 of 12 mm in length and 7 mm in diameter at 70 volume% to prepare a tobacco segment 20A.
  • the system was subjected to a smoking test (14 puffs, CIR conditions, constant heating at 350°C) using a smoking machine. After the smoking test, the shreds were removed gently from the tobacco segment 20A. Subsequently, new shreds were packed within the wrapper 22 again at 70 volume%, and the system was subjected to the second smoking test.
  • the smoking test was repeated in the same manner 20 times in total, and the total volume of detached shreds remained within the wrapper 22 was measured.
  • the surface roughness was measured using a microscope (VK-X 100 from Keyence Corporation) through the following procedure of:
  • the obtained sheet was cut into 15 mm in width ⁇ 180 mm in length, and the tensile strength was assessed as tensile stress by measuring using a tensile strength tester (Strograph E-S from Toyo Seiki Seisaku-sho, Ltd.) under conditions of load range: 25 and speed range: 50.
EP21875857.1A 2020-10-02 2021-10-01 Tabakfolie Pending EP4223148A1 (de)

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Publication number Priority date Publication date Assignee Title
TW201023769A (en) 2008-10-23 2010-07-01 Japan Tobacco Inc Non-burning type flavor inhalation article
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
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
CN112770886B (zh) * 2018-10-04 2023-03-31 凸版印刷株式会社 混凝土装饰用工艺纸及混凝土装饰用压模材料
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
WO2020157934A1 (ja) * 2019-01-31 2020-08-06 日本たばこ産業株式会社 香味発生セグメント、ならびにこれを備える香味発生物品および香味吸引システム
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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