WO2023054688A1 - 非燃焼加熱型香味吸引器用たばこシート、非燃焼加熱型香味吸引器、及び非燃焼加熱型香味吸引システム - Google Patents
非燃焼加熱型香味吸引器用たばこシート、非燃焼加熱型香味吸引器、及び非燃焼加熱型香味吸引システム Download PDFInfo
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- WO2023054688A1 WO2023054688A1 PCT/JP2022/036754 JP2022036754W WO2023054688A1 WO 2023054688 A1 WO2023054688 A1 WO 2023054688A1 JP 2022036754 W JP2022036754 W JP 2022036754W WO 2023054688 A1 WO2023054688 A1 WO 2023054688A1
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- tobacco
- sheet
- combustion heating
- flavor inhaler
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- RUVINXPYWBROJD-ONEGZZNKSA-N trans-anethole Chemical compound COC1=CC=C(\C=C\C)C=C1 RUVINXPYWBROJD-ONEGZZNKSA-N 0.000 description 1
- 238000012546 transfer Methods 0.000 description 1
- 239000001917 trigonella foenum graecum l. absolute Substances 0.000 description 1
- 125000002221 trityl group Chemical group [H]C1=C([H])C([H])=C([H])C([H])=C1C([*])(C1=C(C(=C(C(=C1[H])[H])[H])[H])[H])C1=C([H])C([H])=C([H])C([H])=C1[H] 0.000 description 1
- NQPDZGIKBAWPEJ-UHFFFAOYSA-N valeric acid Chemical compound CCCCC(O)=O NQPDZGIKBAWPEJ-UHFFFAOYSA-N 0.000 description 1
- MWOOGOJBHIARFG-UHFFFAOYSA-N vanillin Chemical compound COC1=CC(C=O)=CC=C1O MWOOGOJBHIARFG-UHFFFAOYSA-N 0.000 description 1
- FGQOOHJZONJGDT-UHFFFAOYSA-N vanillin Natural products COC1=CC(O)=CC(C=O)=C1 FGQOOHJZONJGDT-UHFFFAOYSA-N 0.000 description 1
- 235000012141 vanillin Nutrition 0.000 description 1
- 235000015112 vegetable and seed oil Nutrition 0.000 description 1
- 239000010679 vetiver oil Substances 0.000 description 1
- 239000001846 viola odorata l. leaf absolute Substances 0.000 description 1
- KPQMCAKZRXOZLB-AATRIKPKSA-N vomifoliol Chemical compound CC(O)\C=C\C1(O)C(C)=CC(=O)CC1(C)C KPQMCAKZRXOZLB-AATRIKPKSA-N 0.000 description 1
- 239000000080 wetting agent Substances 0.000 description 1
- 238000004804 winding Methods 0.000 description 1
- 239000002023 wood Substances 0.000 description 1
- 239000000811 xylitol Substances 0.000 description 1
- 235000010447 xylitol Nutrition 0.000 description 1
- HEBKCHPVOIAQTA-SCDXWVJYSA-N xylitol Chemical compound OC[C@H](O)[C@@H](O)[C@H](O)CO HEBKCHPVOIAQTA-SCDXWVJYSA-N 0.000 description 1
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Images
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
- 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
- A24B15/10—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
- 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
- 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
- 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
- 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
-
- 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
Definitions
- the present invention relates to a tobacco sheet for a non-combustion heating flavor inhaler, a non-combustion heating flavor inhaler, and a non-combustion heating flavor inhalation system.
- a combustion-type flavor inhaler obtains flavor by burning a tobacco filling containing leaf tobacco.
- a non-combustion heating type flavor inhaler has been proposed that obtains flavor by heating a flavor source such as a tobacco sheet instead of burning it.
- the heating temperature of the non-combustion-heating flavor inhaler is lower than the combustion temperature of the combustion-type flavor inhaler, for example, about 400° C. or less.
- an aerosol generating agent can be added to the flavor source in the non-combustion heating type flavor inhaler from the viewpoint of increasing the amount of smoke.
- the aerosol-generating agent is vaporized by heating to generate an aerosol. Since the aerosol is supplied to the user together with flavor components such as tobacco components, the user can obtain sufficient flavor.
- a non-combustion heating flavor inhaler can comprise, for example, a tobacco-containing segment filled with tobacco sheets or the like, a cooling segment, and a filter segment.
- the axial length of the tobacco-containing segment of the non-combustion-heating flavor inhaler is generally shorter than the axial length of the tobacco-containing segment of the normal combustion-type flavor inhaler in relation to the heating heater. Therefore, in the non-combustion heating type flavor inhaler, a large amount of tobacco sheets or the like is filled in the short tobacco-containing segments in order to ensure the amount of aerosol generated during heating.
- non-combustion heating type flavor inhalers usually use tobacco sheets with low swelling, that is, high density tobacco sheets.
- the swelling property is a value indicating the volume of a tobacco sheet having a predetermined mass when notches are compressed under a constant pressure for a certain period of time.
- Patent Literatures 1 and 2 disclose tobacco sheets for use in non-combustion heating flavor inhalers.
- the present inventors believe that if a tobacco sheet with low swelling (high density) is used, the total heat capacity of the tobacco-containing segment increases. It was found that the tobacco sheet filled in the tobacco-containing segment does not sufficiently contribute to the generation of aerosol depending on the heating method and the capacity of the heater. In order to solve this problem, it is conceivable to reduce the total heat capacity of the tobacco-containing segment.
- the present inventors (1) reduce the specific heat of the tobacco raw material contained in the tobacco sheet, and (2) use a highly bulky (low-density) tobacco sheet. I considered using it. However, as for (1), it is difficult to reduce the specific heat of the tobacco raw material itself, so it was considered effective to reduce the total heat capacity of the tobacco-containing segment by (2). Therefore, it is desired to develop a highly bulky (low density) tobacco sheet suitable for non-combustion heating type flavor inhalers.
- An object of the present invention is to provide a tobacco sheet for a non-combustion heating type flavor inhaler having high swelling properties, a non-combustion heating type flavor inhaler including the tobacco sheet, and a non-combustion heating type flavor inhalation system.
- the present invention includes the following embodiments.
- a tobacco sheet for a non-combustion heating type flavor inhaler comprising tobacco powder having a cumulative 90% particle size (D90) of 200 ⁇ m or more in a volume-based particle size distribution measured by a dry laser diffraction method.
- Aspect 2 The sheet according to aspect 1, wherein at least one surface has an arithmetic mean surface roughness Sa of 5 to 30 ⁇ m.
- Aspect 3 The sheet of aspect 1 or 2, which is a pressure-formed sheet.
- Aspect 4 The sheet according to any one of aspects 1 to 3, comprising a cellulose derivative having a degree of substitution of 0.65 or more.
- Aspect 5 The sheet according to aspect 4, wherein the degree of substitution is 0.7 or more.
- a tobacco-containing segment comprising the tobacco sheet for a non-combustion heating type flavor inhaler according to any one of aspects 1 to 5,
- a non-combustion heated flavor inhaler comprising:
- Aspect 7 A non-combustion heated flavor inhaler according to aspect 6; a heating device for heating the tobacco-containing segment;
- a non-combustion heated flavor suction system comprising:
- a tobacco sheet for a non-combustion heating type flavor inhaler having high swelling properties a non-combustion heating type flavor inhaler including the tobacco sheet, and a non-combustion heating type flavor inhalation system.
- FIG. 1 is a diagram showing one aspect of a tobacco segment
- tobacco sheet for non-combustion heating type flavor inhaler The tobacco sheet for a non-combustion heating type flavor inhaler according to the present embodiment (hereinafter also referred to as "tobacco sheet”) has a cumulative 90% particle diameter (D90) in a volume-based particle size distribution measured by a dry laser diffraction method. Contains tobacco powder that is 200 ⁇ m or more.
- the tobacco sheet according to the present embodiment since the D90 of the tobacco powder measured by the dry laser diffraction method is 200 ⁇ m or more, the gaps between the tobacco powders in the tobacco sheet are large, and the gaps contribute to the bulkiness of the tobacco sheet. presumed to have contributed to the improvement.
- the tobacco sheet according to the present embodiment preferably further contains an aerosol generating agent and a molding agent. By setting the mixing ratio of these agents within a predetermined range, the swelling property of the tobacco sheet is further improved.
- Tobacco powder contained in the tobacco sheet according to the present embodiment includes, for example, leaf tobacco, core bones, residual stems, and the like. These may be used alone or in combination of two or more. By chopping these into a predetermined size, they can be used as tobacco powder.
- the cumulative 90% particle size (D90) in the volume-based particle size distribution measured by the dry laser diffraction method is 200 ⁇ m or more, preferably 350 ⁇ m or more, and 500 ⁇ m or more. is more preferred.
- the upper limit of the range of D90 is not particularly limited, it can be, for example, 2000 ⁇ m or less.
- the cumulative 50% particle size (D50) in the volume-based particle size distribution measured by the dry laser diffraction method is 40 ⁇ m or more from the viewpoint of further improving the swelling property of the tobacco sheet. , more preferably 100 ⁇ m or more, and even more preferably 200 ⁇ m or more.
- the upper limit of the range of D50 is not particularly limited, it can be, for example, 1000 ⁇ m or less.
- D90 and D50 can be measured by a dry laser diffraction method using, for example, Mastersizer (trade name, manufactured by Spectris Co., Ltd., Malvern Panalytical Division).
- the ratio of tobacco powder contained in 100% by mass of the tobacco sheet is preferably 45-95% by mass.
- a sufficient tobacco aroma can be generated during heating.
- a sufficient amount of an aerosol-generating agent and a molding agent can be included.
- the tobacco powder content is more preferably 50 to 93% by mass, even more preferably 55 to 90% by mass, and particularly preferably 60 to 88% by mass.
- the tobacco sheet according to this embodiment preferably further contains an aerosol-generating agent.
- Aerosol-generating agents include, for example, glycerin, propylene glycol, 1,3-butanediol and the like. These may be used alone or in combination of two or more.
- the ratio of the aerosol-generating agent contained in 100% by mass of the tobacco sheet is preferably 4 to 50% by mass.
- the proportion of the aerosol-generating agent is 4% by mass or more, sufficient aerosol can be generated during heating from the viewpoint of quantity.
- the proportion of the aerosol generating agent is 50% by mass or less, sufficient aerosol can be generated during heating from the viewpoint of heat capacity.
- the proportion of the aerosol generating agent is more preferably 6 to 40% by mass, even more preferably 8 to 30% by mass, and particularly preferably 10 to 20% by mass.
- the tobacco sheet according to the present embodiment preferably further contains a molding agent from the viewpoint of shape retention.
- Molding agents include, for example, polysaccharides, proteins, synthetic polymers and the like. These may be used alone or in combination of two or more. Examples of polysaccharides include cellulose derivatives and naturally occurring polysaccharides.
- Cellulose derivatives include, for example, cellulose ethers such as methylcellulose, ethylcellulose, hydroxyethylcellulose, hydroxymethylethylcellulose, hydroxypropylcellulose, hydroxypropylmethylcellulose, benzylcellulose, tritylcellulose, cyanoethylcellulose, carboxymethylcellulose, carboxyethylcellulose, aminoethylcellulose; Organic acid esters such as cellulose, cellulose formate, cellulose propionate, cellulose butyrate, cellulose benzoate, cellulose phthalate, and tosyl cellulose; and inorganic acid esters such as cellulose nitrate, cellulose sulfate, cellulose phosphate, and cellulose xanthate. be done.
- cellulose ethers such as methylcellulose, ethylcellulose, hydroxyethylcellulose, hydroxymethylethylcellulose, hydroxypropylcellulose, hydroxypropylmethylcellulose, benzylcellulose, tritylcellulose
- Naturally-derived polysaccharides include guar gum, tara gum, roasted bean gum, tamarind seed gum, pectin, arabic gum, tragacanth gum, karaya gum, gutti gum, arabinogalactan, amaseed gum, cascha gum, psyllium seed gum, and mugwort seed gum.
- plant-derived polysaccharides agar, alginic acid, propylene glycol alginate, furcelleran, algae-derived polysaccharides such as fukuronori extract; xanthan gum, gellan gum, curdlan, pullulan, Agrobacterium succinoglycan, welan gum, macro Microorganism-derived polysaccharides such as homopsis gum and rhamzan gum; crustacean-derived polysaccharides such as chitin, chitosan, and glucosamine; and starches such as starch, sodium starch glycolate, pregelatinized starch, and dextrin.
- proteins examples include grain proteins such as wheat gluten and rye gluten.
- Synthetic polymers include, for example, polyphosphoric acid, sodium polyacrylate, polyvinylpyrrolidone, and the like.
- the proportion of the molding agent contained in 100% by mass of the tobacco sheet is preferably 0.1 to 15% by mass.
- the ratio of the molding agent is 0.1% by mass or more, the raw material mixture can be molded into a sheet. Further, since the ratio of the molding agent is 15% by mass or less, it is possible to sufficiently use other raw materials for ensuring the functions required for the tobacco-containing segment of the non-combustion heating type flavor inhaler.
- the ratio of the molding agent is more preferably 0.2 to 13% by mass, still more preferably 0.5 to 12% by mass, and particularly preferably 1 to 10% by mass.
- the tobacco sheet according to this embodiment may further contain a reinforcing agent from the viewpoint of further improving physical properties.
- reinforcing agents include fibrous substances such as fibrous pulp, insoluble fibers and fibrous synthetic cellulose, and liquid substances such as pectin suspension having a surface coating function that forms a film when dried. These may be used alone or in combination of two or more.
- the proportion of the reinforcing agent contained in 100% by mass of the tobacco sheet is preferably 4 to 60% by mass. Within this range, other raw materials can be sufficiently used to secure the functions required for the tobacco-containing segment of the non-combustion-heating flavor inhaler.
- the ratio of the reinforcing agent is more preferably 4.5 to 55% by mass, even more preferably 5 to 50% by mass.
- the tobacco sheet according to this embodiment may further contain a humectant from the viewpoint of maintaining quality.
- moisturizing agents include sugar alcohols such as sorbitol, erythritol, xylitol, maltitol, lactitol, mannitol, and reduced maltose starch syrup. These may be used alone or in combination of two or more.
- the ratio of the humectant contained in 100% by mass of the tobacco sheet is preferably 1 to 15% by mass. Within this range, other raw materials can be sufficiently used to secure the functions required for the tobacco-containing segment of the non-combustion-heating flavor inhaler.
- the ratio of the moisturizing agent is more preferably 2 to 12% by mass, even more preferably 3 to 10% by mass.
- the tobacco sheet according to the present embodiment may optionally contain a flavoring agent such as a fragrance and a flavoring agent, a coloring agent, Wetting agents, preservatives, diluents such as inorganic substances, and the like may be included.
- the tobacco sheet according to the present embodiment has a swelling property of 190 cc/100 g or more.
- the swelling property 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 the tobacco sheet filled in the tobacco-containing segment is generated by aerosol generation. be able to contribute.
- the swelling property is more preferably 210 cc/100 g or more, more preferably 230 cc/100 g or more.
- the upper limit of the swelling range is not particularly limited, it can be, for example, 800 cc/100 g or less.
- the swelling property was measured by cutting a tobacco sheet into a size of 0.8 mm x 9.5 mm, leaving it in a conditioned room at 22°C and 60% for 48 hours, and measuring DD-60A (trade name, manufactured by Borgwald). ) is the value measured by The measurement is carried out by placing 15 g of cut tobacco sheets in a cylindrical container with an inner diameter of 60 mm and compressing the container with a load of 3 kg for 30 seconds to obtain the volume.
- the “tobacco sheet” is formed by forming a tobacco sheet component such as tobacco powder into a sheet shape.
- sheet refers to a shape having a pair of substantially parallel main surfaces and side surfaces.
- the length and width of the tobacco sheet are not particularly limited, and can be appropriately adjusted according to the manner of filling.
- the thickness of the tobacco sheet is not particularly limited, but is preferably 100 to 1000 ⁇ m, more preferably 150 to 600 ⁇ m, in terms of heat transfer efficiency and strength.
- the tobacco sheet according to this embodiment can be produced by a known method such as a rolling method or a casting method.
- a known method such as a rolling method or a casting method.
- Various tobacco sheets manufactured by such a method are disclosed in detail in "Encyclopedia of Tobacco, Tobacco Research Center, March 31, 2009".
- Examples of methods for producing tobacco sheets by rolling include methods including the following steps. (1) A step of mixing water, tobacco powder, an aerosol-generating agent, a molding agent, and a reinforcing agent to obtain a mixture. (2) A step of rolling the mixture by putting it into rolling rollers. (3) A step of drying the rolled product with a dryer.
- the surface of the pressure roller may be heated or cooled, and the rotation speed of the pressure roller may be adjusted depending on the purpose. Also, the interval between the rolling rollers may be adjusted.
- One or more rolling rollers can be used to obtain tobacco sheets of desired basis weight.
- Examples of methods for producing tobacco sheets by casting include methods including the following steps. (1) A step of mixing water, tobacco powder, aerosol generating agent, molding agent and pulp to obtain a mixture. (2) A step of thinly spreading (casting) the mixture and drying to form a tobacco sheet.
- Some components such as nitrosamines are removed by irradiating ultraviolet rays or X-rays to a slurry obtained by mixing water, tobacco powder, an aerosol-generating agent, a molding agent, and pulp. may be added.
- the non-combustion-heating flavor inhaler according to this embodiment includes a tobacco-containing segment including the tobacco sheet or the like according to this embodiment. Since the non-combustion-heating flavor inhaler according to the present embodiment includes the tobacco-containing segment filled with the highly bulky tobacco sheet or the like according to the present embodiment, the total heat capacity of the tobacco-containing segment should be sufficiently reduced. , allowing the tobacco sheet filled in the tobacco-containing segment to contribute more to aerosol generation.
- the non-combustion heating type flavor inhaler 1 shown in FIG. It comprises a segment 4 and a filter segment 5 .
- the non-combustion-heating flavor inhaler according to this embodiment may have segments other than the tobacco-containing segment, cooling segment, center hole segment, and filter segment.
- the axial length of the non-combustion heating type flavor inhaler according to the present embodiment is not particularly limited, but is preferably 40 mm or more and 90 mm or less, more preferably 50 mm or more and 75 mm or less, 50 mm or more, It is more preferably 60 mm or less.
- the circumference of the non-combustion heating flavor inhaler is preferably 16 mm or more and 25 mm or less, more preferably 20 mm or more and 24 mm or less, and even more preferably 21 mm or more and 23 mm or less.
- the length of the tobacco-containing segment is 20 mm
- the length of the cooling segment is 20 mm
- the length of the center hole segment is 8 mm
- the length of the filter segment is 7 mm.
- the length of the filter segment can be selected within a range of 4 mm or more and 10 mm or less.
- the ventilation resistance of the filter segments at that time is selected to be 15 mmH 2 O/seg or more and 60 mmH 2 O/seg or less per segment.
- the tobacco sheet or the like is filled in a wrapping paper (hereinafter also referred to as a wrapper).
- the method of filling the tobacco sheet or the like into the wrapping paper is not particularly limited.
- the shape of the tobacco sheet has a longitudinal direction such as a rectangular shape
- the tobacco sheet or the like may be filled in the wrapper such that the longitudinal direction is in an unspecified direction. Alternatively, they may be aligned and filled in a direction perpendicular to the axial direction.
- the cooling segment 3 may be configured by a cylindrical member 7.
- the tubular member 7 may be, for example, a paper tube formed by processing cardboard into a cylindrical shape.
- the tubular member 7 and the mouthpiece lining paper 12, which will be described later, are provided with perforations 8 penetrating both. Due to the presence of the perforations 8 outside air is introduced into the cooling segment 3 during suction. As a result, the vaporized aerosol component generated by heating the tobacco-containing segment 2 comes into contact with the outside air, and its temperature decreases, liquefying to form an aerosol.
- the diameter (spanning length) of the perforations 8 is not particularly limited, but may be, for example, 0.5 mm or more and 1.5 mm or less.
- the number of perforations 8 is not particularly limited, and may be one or two or more. For example, multiple perforations 8 may be provided on the circumference of the cooling segment 3 .
- the amount of outside air introduced through the perforations 8 is preferably 85% by volume or less, more preferably 80% by volume or less, relative to the total volume of the gas inhaled by the user.
- the ratio of the amount of outside air is 85% by volume or less, it is possible to sufficiently suppress reduction in flavor due to dilution by outside air.
- this is also called a ventilation ratio.
- the lower limit of the ventilation ratio range is preferably 55% by volume or more, more preferably 60% by volume or more.
- the cooling segment may also be a segment comprising a crumpled, pleated, gathered or folded sheet of suitable construction material.
- the cross-sectional profile of such elements may exhibit randomly oriented channels.
- the cooling segment may also include a bundle of longitudinally extending tubes.
- Such cooling segments may be formed, for example, from pleated, gathered, or folded sheet material wrapped with wrapping paper.
- the axial length of the cooling segment can be, for example, 7 mm or more and 28 mm or less, and can be, for example, 18 mm.
- the cooling segment can be substantially circular in its axial cross-sectional shape, and its diameter can be, for example, 5 mm or more and 10 mm or less, and can be, for example, about 7 mm.
- the center hole segment is composed of a filling layer having one or more hollow portions and an inner plug wrapper (inner wrapping paper) covering the filling layer.
- the center hole segment 4 is composed of a second filling layer 9 having a hollow portion and a second inner plug wrapper 10 covering the second filling layer 9 .
- the center hole segment 4 has the function of increasing the strength of the mouthpiece segment 6 .
- the second filling layer 9 is filled with, for example, cellulose acetate fibers at a high density, and a plasticizer containing triacetin is added in an amount of 6% by mass or more and 20% by mass or less based on the mass of cellulose acetate and hardened to have an inner diameter of ⁇ 1.0 mm.
- the second packed layer 9 has a high packing density of fibers, air and aerosol flow only in the hollow portion and hardly flow in the second packed layer 9 during suction. Since the second filling layer 9 inside the center hole segment 4 is a fiber filling layer, the feeling of touch from the outside during use hardly causes the user to feel uncomfortable. Note that the center hole segment 4 may not have the second inner plug wrapper 10 and may retain its shape by thermoforming.
- the configuration of the filter segment 5 is not particularly limited, it may be composed of a single or a plurality of packed layers.
- the outer side of the packing layer may be wrapped with one or more wrapping papers.
- the per-segment ventilation resistance of the filter segments 5 can be appropriately changed depending on the amount of filler, the material, and the like with which the filter segments 5 are filled.
- the ventilation resistance can be increased by increasing the amount of cellulose acetate fiber with which the filter segment 5 is filled.
- the packing density of the cellulose acetate fiber can be 0.13-0.18 g/cm 3 .
- the airflow resistance is a value measured by an airflow resistance measuring instrument (trade name: SODIMAX, manufactured by SODIM).
- the length of the circumference of the filter segment 5 is not particularly limited, it is preferably 16 to 25 mm, more preferably 20 to 24 mm, even more preferably 21 to 23 mm.
- the axial length of the filter segment 5 can be selected from 4 to 10 mm, and is selected so that its ventilation resistance is from 15 to 60 mmH 2 O/seg.
- the axial length of the filter segment 5 is preferably 5-9 mm, more preferably 6-8 mm.
- the cross-sectional shape of the filter segment 5 is not particularly limited, but may be, for example, circular, elliptical, or polygonal.
- the filter segment 5 may be directly added with destructible capsules containing perfume, perfume beads, and perfume.
- the center hole segment 4 and the filter segment 5 can be connected with an outer plug wrapper (outer wrapping paper) 11.
- the outer plug wrapper 11 can be, for example, cylindrical paper.
- the tobacco-containing segment 2, the cooling segment 3, and the connected center hole segment 4 and filter segment 5 can be connected by the mouthpiece lining paper 12. These connections can be made, for example, by applying glue such as vinyl acetate glue to the inner surface of the mouthpiece lining paper 12, inserting the three segments, and winding them.
- these segments may be divided into multiple times and connected with multiple lining papers.
- the non-combustion heating flavor inhalation system includes the non-combustion heating flavor inhaler according to this embodiment, and a heating device that heats the tobacco-containing segment of the non-combustion heating flavor inhaler.
- the non-combustion-heating flavor inhalation system according to the present embodiment may have a configuration other than the non-combustion-heating flavor inhaler and the heating device according to the present embodiment.
- the non-combustion heating flavor inhalation system shown in FIG. 2 includes a non-combustion heating flavor inhaler 1 according to this embodiment and a heating device 13 that heats the tobacco-containing segment of the non-combustion heating flavor inhaler 1 from the outside. Prepare.
- FIG. 2(a) shows the state before the non-combustion heating flavor inhaler 1 is inserted into the heating device 13, and FIG. indicates the state of
- the heating device 13 shown in FIG. 2 includes a body 14, a heater 15, a metal tube 16, a battery unit 17, and a control unit 18.
- the body 14 has a cylindrical recess 19, and a heater 15 and a metal tube are provided on the inner side surface of the recess 19 at positions corresponding to the tobacco-containing segments of the non-combustion heating flavor inhaler 1 inserted into the recess 19. 16 are arranged.
- the heater 15 can be a heater using electric resistance, and electric power is supplied from the battery unit 17 according to an instruction from the control unit 18 for temperature control, and the heater 15 is heated. The heat emitted from the heater 15 is transmitted to the tobacco-containing segment of the non-combustion heating flavor inhaler 1 through the metal pipe 16 with high thermal conductivity.
- FIG. 2(b) there is a gap between the outer circumference of the non-combustion-heating flavor inhaler 1 and the inner circumference of the metal tube 16 because it is schematically illustrated.
- the heating device 13 heats the tobacco-containing segment of the non-combustion-heating flavor inhaler 1 from the outside, but it may heat from the inside.
- the heating temperature of the heating device is not particularly limited, it is preferably 400°C or lower, more preferably 150°C or higher and 400°C or lower, and even more preferably 200°C or higher and 350°C or lower.
- the heating temperature indicates the temperature of the heater of the heating device.
- a sheet produced by the papermaking method is composed of fibrous tobacco leaf residue, and therefore has excellent strength, but does not have a sufficient level of surface smoothness.
- the sheet produced by the casting method is dried from a wet sheet in which water is abundant, air bubbles are generated on the surface due to the generation of steam during drying.
- the smoothness is not at a sufficient level due to the fact that the edge of the wet sheet becomes loose during the process of water evaporation and contraction of the wet sheet.
- lumps are formed due to entanglement of the material, which also impairs the smoothness of the sheet surface.
- tobacco sheets are subjected to processing such as molding and cutting, and then used for smoking articles. If the surface of the tobacco sheet is not sufficiently smooth during this processing, problems such as breakage of the sheet may occur when the sheet comes into contact with a processing device. Therefore, a tobacco sheet having excellent processability in addition to the above effects will be described below as a first aspect.
- the tobacco sheet in this aspect includes at least tobacco material and a binder.
- Binder A binder is one of the molding agents described above, and is an adhesive for binding tobacco materials together or tobacco materials and other components.
- known binders can be used.
- examples of such binders include polysaccharides such as guar gum and xanthan gum, CMC (carboxymethyl cellulose), CMC-Na (carboxymethyl cellulose sodium salt), and cellulose derivatives such as HPC (hydroxypropyl cellulose).
- the upper limit of the content of the binder is preferably 6% by mass or less in dry mass (mass excluding mixed water, the same shall apply hereinafter) relative to the dry mass of the tobacco sheet, and the lower limit is preferably 1. It is at least 3% by mass, more preferably at least 3% by mass. If the amount of the binder exceeds the upper limit or is less than the lower limit, the above effects may not be sufficiently exhibited.
- Binders used in this embodiment include polysaccharides, proteins, and synthetic polymers. Specific examples of these are shown below. In this embodiment, these binders can also be used in combination.
- Naturally-derived polysaccharides [plant-derived] Guar Gum, Tara Gum, Roasted Bean Gum, Tamarind Seed Gum, Pectin, Arabic Gum, Tragacanth Gum, Karaya Gum, Gutti Gum, Arabinogalactan, Amaseed Gum, Cassia Gum, Psyllium Seed Gum, Mackerel Seed Gum [from Algae] Carrageenan, agar, alginic acid, propylene glycol alginate, furcelleran, fukuronori extract [derived from microorganisms] Xanthan gum, gellan gum, curdlan, pullulan, agrobacterium succinoglycan, welan gum, macrohomopsis gum, rhamzan gum [from crustaceans] Chitin, chitosan, glucosamine [starches] Starch, sodium starch glycolate, pregelatinized starch, dextrin
- the tobacco material used in this embodiment is preferably the tobacco powder described above. However, materials other than the tobacco powder may be used in this embodiment as long as the effects of the invention are not impaired. As a material other than the tobacco powder, specifically, dried tobacco leaves cut into pieces, leaf tobacco pulverized material, or the like can be used.
- Leaf tobacco pulverized material is particles obtained by pulverizing leaf tobacco.
- the particle diameter D90 of the pulverized leaf tobacco is not limited, but its upper limit is preferably 1000 ⁇ m or less, more preferably 50 to 500 ⁇ m. Also, the average particle diameter D50 can be preferably 20 to 1000 ⁇ m, more preferably 50 to 500 ⁇ m.
- Pulverization can be performed using a known pulverizer, and may be either dry pulverization or wet pulverization.
- Leaf tobacco pulverized products are therefore also referred to as leaf tobacco particles.
- the particle size is determined by a laser diffraction/scattering method, and specifically measured using a laser diffraction particle size distribution analyzer (eg, Horiba LA-950).
- the type of tobacco is not limited, and yellow varieties, burley varieties, orient varieties, native varieties, and other Nicotiana tabacum varieties and Nicotiana rustica varieties can be used.
- the amount of tobacco material in the tobacco sheet is not particularly limited, it is preferably 50 to 95% by weight, more preferably 60 to 90% by weight on a dry weight basis.
- Aerosol-generating agent in this embodiment, known aerosol-generating agents can be used, and examples thereof include glycerin, polyhydric alcohols such as propylene glycol (PG), triethyl citrate (TEC), Those having a boiling point of over 100°C, such as triacetin, can be mentioned.
- the amount of the aerosol-generating agent in the tobacco sheet is preferably 5 to 40 mass %, more preferably 10 to 20 mass % in terms of dry mass (mass excluding mixed water; the same shall apply hereinafter). If the amount of the aerosol-generating agent exceeds the upper limit, it may become difficult to manufacture the tobacco sheet, and if it is less than the lower limit, the smoke sensitivity may decrease.
- the tobacco sheet may contain an emulsifier.
- Emulsifiers enhance the affinity between the aerosol-generating agent, which is lipophilic, and the tobacco material, which is hydrophilic. Therefore, addition of an emulsifier is effective especially when using a lipophilic aerosol-generating agent.
- Known emulsifiers can be used, and examples thereof include emulsifiers having an HLB value of 8-18.
- the amount of the emulsifier is not particularly limited, it is preferably 0.1 to 3 parts by weight, more preferably 1 to 2 parts by weight in terms of dry weight with respect to 100 parts by weight of the tobacco sheet.
- the tobacco sheet of this aspect does not contain fibers derived from tobacco and fibers derived from materials other than tobacco (for example, cellulose). In this aspect, it is possible to avoid undesired effects such as off-taste on the drinking taste due to these fibers. However, since it is not practical to eliminate fibers completely, the amount of the fibers in the tobacco sheet is preferably 1.0% by weight, more preferably 0.5% by weight in terms of dry weight. In another embodiment, the tobacco sheet of this aspect contains 0.5 to 2.0% by mass of fibers derived from tobacco or fibers derived from materials other than tobacco. In this aspect, the strength of the tobacco sheet is improved by the fibers, resulting in an excellent balance between smoking taste and strength.
- tobacco-derived fibers refer to those obtained by beating tobacco raw materials into pulp using a grinder or the like, and are different from the aforementioned tobacco materials.
- the tobacco sheet may contain a flavor.
- a flavoring agent is a substance that provides an odor or flavor.
- the perfume may be a natural perfume or a synthetic perfume. As the perfume, one kind of perfume may be used, or a mixture of multiple kinds of perfumes may be used. Any flavor commonly used in smoking articles can be used as the flavor, specific examples of which are described below.
- Flavoring agents can be included in the sheet for smoking articles in an amount such that the smoking article can provide the desired aroma and flavor, for example, the amount is preferably 1 to 30% by weight, more preferably 1 to 30% by weight in the tobacco sheet. is 2 to 20% by mass.
- the type of perfume is not particularly limited, and from the viewpoint of imparting a good perfume feeling, acetoanisole, acetophenone, acetylpyrazine, 2-acetylthiazole, alfalfa extract, amyl alcohol, amyl butyrate, trans-anethole, star anise.
- Oil carob absolute, beta-carotene, carrot juice, L-carvone, beta-caryophyllene, cassia bark oil, cedarwood oil, celery seed oil, chamomile oil, cinnamaldehyde, cinnamic acid, cinnamyl alcohol, cinnamyl cinnamate, Citronella oil, DL-citronellol, clary sage extract, cocoa, coffee, cognac oil, coriander oil, cumin aldehyde, davana oil, ⁇ -decalactone, ⁇ -decalactone, decanoic acid, dill herb oil, 3,4-dimethyl-1, 2-cyclopentanedione, 4,5-dimethyl-3-hydroxy-2,5-dihydrofuran-2-one, 3,7-dimethyl-6-octenoic acid, 2,3-dimethylpyrazine, 2,5-dimethyl Pyrazine, 2,6-dimethylpyrazine
- fragrances e.g. jasmine oil, lemon oil, vetiver oil, lobage oil
- esters e.g. menthyl acetate, isoamyl propionate, etc.
- alcohols e.g. phenylethyl alcohol, cis-6-nonene-1- all, etc.
- Characteristics and form of tobacco sheet 1 Arithmetic mean surface roughness Sa
- the tobacco sheet in this aspect preferably has Sa of 5 to 30 ⁇ m on at least one side.
- Sa is an index of surface roughness, and when the tobacco sheet of this embodiment has Sa within the above range, it is excellent in workability, and furthermore, it has reduced chipping from the surface. From this point of view, Sa is more preferably 10 to 25 ⁇ m, still more preferably 10 to 20 ⁇ m. Both sides of the tobacco sheet of this aspect preferably have Sa within the above range.
- Sa is measured by a known method, and preferred measurement methods are listed below. Using a microscope (for example, VK-X100 manufactured by KEYENCE), the measurement is performed in the following procedure.
- the thickness of the tobacco sheet is not limited, but in one aspect it is preferably 20 to 2000 ⁇ m, more preferably 100 to 1500 ⁇ m, and even more preferably 100 to 1000 ⁇ m.
- the tobacco sheet in this embodiment preferably has a tensile elongation of 2.0% or more, more preferably 3.0% or more, and still more preferably 5.0% or more. Although the upper limit of the tensile elongation is not limited, it is usually about 15% or less. Further, the tobacco sheet preferably has a tensile stress of 2.0 N/mm or more, more preferably 2.5 N/mm or more, and still more preferably 3.0 N/mm or more.
- the smoothness of the tobacco sheet in this embodiment affects the handleability of the product.
- a smoking article using a tobacco sheet with poor smoothness generates fine powder called shavings during or after use, which may cause problems in handling such as sticking to clothes.
- the tobacco sheet of the present invention is excellent in smoothness, the occurrence of such problems can be suppressed.
- Tobacco segments for use in smoking articles can be produced from tobacco sheets.
- the tobacco segment in one aspect, comprises a tubular wrapper with a tobacco sheet spirally packed within the wrapper (see Figure 3A).
- 20A is a tobacco segment
- T is a tobacco sheet
- 22 is a wrapper, usually paper.
- the tobacco segment is preferably rod-shaped and can have a length of 15-80 mm and a diameter of the order of 5-10 mm.
- the tobacco segment 20A shown in FIG. 3A can be cut to have an aspect ratio (length/diameter) of about 0.5 to 1.2 (see FIG. 3B).
- the tobacco segment 20A in another embodiment, comprises a tubular wrapper 22, and comprises a tobacco sheet T folded and filled inside the wrapper.
- the ridgeline produced by the folding is substantially parallel to the longitudinal direction of the segment (see Figure 3C).
- the tobacco segment 20A is preferably rod-shaped, and can have a length of 15-80 mm and a diameter of the order of 5-10 mm.
- it is preferable that the tobacco sheet T is preliminarily subjected to surface wrinkling such as pleating or crimping.
- the tobacco segment 20A in another embodiment, comprises a tubular wrapper 22 and comprises tobacco sheet cut pieces filled in the wrapper (see FIG. 3D).
- the tobacco segment 20A is preferably rod-shaped, and can have a length of 15-80 mm and a diameter of the order of 5-10 mm.
- the size of the cut piece is not limited, for example, the length of the longest side can be about 2 to 20 mm and the width can be about 0.5 to 1.5 mm.
- the tobacco segment 20A alternatively comprises a tubular wrapper 22 with strand-type cuts packed inside the wrapper (see FIG. 3E).
- the strand type cuts are filled so that the longitudinal direction thereof is substantially parallel to the longitudinal direction of the wrapper 22 .
- the width of the strand type cut can be about 0.5 to 1.5 mm.
- the tobacco segment 20A in another embodiment, comprises a tubular wrapper 22 and comprises cut tobacco filling randomly filled in the wrapper. Tobacco cuts are cut and different from strand-type cuts.
- the tobacco sheet in this aspect can be manufactured by any method, but is preferably manufactured by a method comprising the following steps. Step 1 of kneading at least a tobacco material, a binder and a medium to prepare a mixture. Step 2 of pressing the mixture or extruding it through a die to prepare a wet sheet. Step 3 of drying the wet sheet.
- a sheet formed by applying pressure in this way is called a "pressure-formed sheet", and as described later, the "pressure-formed sheet” includes a "laminate sheet” and an "extruded sheet".
- a laminate sheet is a sheet obtained by rolling out a mixture to a target thickness with a roller one or more times and then drying to a target moisture content.
- An extruded sheet is a sheet obtained by extruding a mixture from a T-die or the like to a target thickness and then drying to a target moisture content. Flattening and extrusion may be combined in pressure formed sheets. For example, the mixture may be extruded and then further rolled into a sheet.
- Process 1 the tobacco material, binder, and medium are kneaded. Aerosol-forming bases, emulsifiers, or fragrances can also be added, if desired. The blending amount of each component is adjusted so as to achieve the aforementioned amounts.
- the medium preferably contains water or a water-soluble organic solvent such as ethanol having a boiling point of less than 100° C. as a main component, and more preferably water or ethanol.
- This step can be carried out by kneading each component, but is preferably carried out through 1) pulverization of raw material (for example, single leaf), 2) preparation of wet flour, and 3) kneading.
- 1) Pulverization It is preferable to coarsely crush the raw material and then finely pulverize it using a pulverizer (eg, ACM-5 manufactured by Hosokawa Micron).
- the particle size D90 after milling is preferably between 20 and 1000 ⁇ m. The particle size is measured using a laser diffraction particle size meter such as Mastersizer (manufactured by Malvern).
- a binder and, if necessary, additives such as flavor and lipid are added and mixed. Since this mixing is preferably a dry blend, it is preferred to use a mixer as a mixer.
- a medium such as water and, if necessary, an aerosol-generating base material such as glycerin are added to the dry blend and mixed in a mixer to prepare a wet powder (powder in a wet state).
- the amount of the medium in the wet powder can be 20-80% by weight, preferably 20-40% by weight, and is adjusted according to step 2. For example, the amount of the medium can be 20 to 50% by weight when compression is performed in step 2, and 20 to 80% by weight when extrusion is performed.
- the wet powder preferably has a solid content concentration of 50 to 90% by mass.
- Kneading The wet powder is kneaded using a kneader (eg, DG-1 manufactured by Dalton).
- the kneading is preferably carried out until the medium spreads over the whole.
- kneading is preferably carried out until the color of the mixture becomes uniform visually.
- the mixture (wet powder) is compressed or extruded through a die to prepare a wet sheet.
- a wet sheet For example, while sandwiching the mixture between two base films, it is passed between a pair of rollers until it reaches a predetermined thickness (more than 100 ⁇ m) using a calendering device (manufactured by Yuri Roll Machinery Co., Ltd.), and pressed. It can be spread out to give a laminate with a wet sheet between the two substrate films.
- a non-adhesive film such as a fluoropolymer film is preferable as the base film.
- Roller compression can be performed multiple times.
- the mixture (wet powder) can be extruded through a die (preferably a T-die) provided with a predetermined gap to form a wet sheet on the substrate.
- a die preferably a T-die
- the base material known ones such as a glass plate, a metal plate, and a plastic plate can be used.
- a known extruder can be used for extrusion.
- Process 3 the wet sheet is dried.
- this step can be carried out according to the following procedure. 1) Peel off one base film. 2) Dry the laminate using a forced air dryer. The drying temperature may be room temperature, preferably 50 to 100° C., and the drying time may be 1 to 2 minutes. 3) Next, the remaining base film is peeled off and dried under the above conditions to obtain a tobacco sheet. Drying in this way can prevent the tobacco sheet from adhering to other substrates.
- the tobacco sheet thus obtained is also called a "laminate sheet".
- the laminate sheet is preferable because it has a smooth surface and can suppress the occurrence of chipping when it comes into contact with other members. Also, the method is suitable for producing sheets of 300 ⁇ m or less.
- the wet sheet on the substrate is air-dried or heated to dry. Drying conditions are as described above.
- the tobacco sheet thus obtained is also called an "extruded sheet".
- the extruded sheet is preferable because it has a smooth surface and can suppress the occurrence of chipping when it comes into contact with other members.
- the method is suitable for producing sheets of 200 ⁇ m and above.
- the tobacco sheet in this aspect contains a tobacco material and a cellulose derivative having a degree of substitution of 0.65 or more as a binder.
- Binder In this embodiment, a cellulose derivative having a degree of substitution of 0.65 or more is used as the binder.
- a cellulose derivative is a cellulose in which the —OH group of the gluconopyranose residue is modified. Those in which the —OH group is modified to an —OR group (R is an organic group) are called cellulose ethers, and those in which an —OX group (X is a group derived from an acid) are called cellulose esters. Both can be used in the present invention.
- the degree of substitution is the number of substituents per gluconopyranose residue, that is, the number of modified OH groups.
- the degree of substitution used in the present invention is preferably 0.65 or more, more preferably 0.7 or more, still more preferably 0.8 or more.
- the upper limit of the degree of substitution is preferably 3.0 or less, more preferably 2.0 or less, still more preferably 1.6 or less, and particularly preferably 1.0 or less.
- the degree of substitution is measured by known methods.
- the degree of substitution is measured by the nitric acid-methanol method.
- the method is as follows: 1) About 2.0 g of a sample is accurately weighed and placed in a 300 ml stoppered Erlenmeyer flask. Add 100 ml of methanol nitrate (1 g of anhydrous methanol to 100 ml of special grade concentrated nitric acid) and shake for about 2 hours to convert terminal acid groups from salt form to hydrogen form (for example, from COONa to COOH). 2) The sample is filtered through a glass filter 1G3, washed with 200 ml of 80% methanol, and dried at 105° C. for 2 hours.
- R is a C1-C3 linear or branched alkyl group such as a methyl group, an ethyl group, a propyl group; Hydroxyalkyl group; C7-C20 arylalkyl group such as benzyl group and trityl group; Cyanoalkyl group such as cyanoethyl group; Carboxyalkyl group such as carboxymethyl group and carboxyethyl group; Aminoalkyl group such as aminoethyl group is mentioned. Among them, R is preferably a carboxyalkyl group, more preferably a carboxymethyl group.
- the degree of substitution in cellulose ethers is also called degree of etherification.
- X is a group derived from C0 to C4 carboxylic acids such as formic acid, acetic acid, propionic acid and butyric acid; a group derived from C6 to C10 aromatic carboxylic acids such as benzoic acid and phthalic acid; p-toluenesulfonic acid groups derived from sulfonic acid such as ; groups derived from inorganic acids such as nitric acid, sulfuric acid and phosphoric acid; groups derived from xatogenic acid.
- the degree of substitution in cellulose esters is also called the degree of esterification.
- the cellulose derivative is highly hydrophilic, its affinity with tobacco materials is improved when it is used as a binder. As a result, the strength of the tobacco sheet is improved, and it becomes difficult for the tobacco sheet to crack during use.
- the cellulose derivative is soluble in organic solvents, especially ethanol. Therefore, as will be described later, when a mixture containing ethanol as a medium is used in the manufacture of tobacco sheets, the viscosity of the mixture can be lowered, which is more advantageous than a mixture containing water as a medium in transportation and coating processes in manufacturing. is. In addition, since ethanol evaporates more easily than water, it is possible to shorten the production time and reduce the energy cost during drying in the above production method.
- the amount of the cellulose derivative in the tobacco sheet is not particularly limited, but is preferably 0.1 to 10% by mass in terms of dry mass (mass excluding mixed water, hereinafter the same) relative to the dry mass of the tobacco sheet. , more preferably 1 to 5% by mass, and further 2 to 4% by mass. If the amount of the binder exceeds the upper limit or is less than the lower limit, the above effects may not be sufficiently exhibited.
- cellulose derivatives are shown below.
- Cellulose ethers methylcellulose, ethylcellulose, hydroxyethylcellulose, hydroxymethylethylcellulose, hydroxypropylcellulose, hydroxypropylmethylcellulose, benzylcellulose, tritylcellulose, cyanoethylcellulose, carboxymethylcellulose, carboxyethylcellulose, aminoethylcellulose
- Cellulose esters cellulose acetate, cellulose formate, Organic acid esters such as cellulose propionate, cellulose butyrate, cellulose benzoate, cellulose phthalate, tosylcellulose cellulose nitrate; inorganic acid esters such as cellulose sulfate, cellulose phosphate, and cellulose xanthate
- the tobacco sheet may contain the aerosol-generating agent described in the first aspect.
- the tobacco sheet may contain the emulsifier described in the first aspect.
- the tobacco sheet may contain cellulose other than tobacco.
- Cellulose other than tobacco includes, for example, the aforementioned cellulose fibers and cellulose powder, and does not include cellulose derivatives as binders.
- Tobacco sheets containing cellulose fibers have high strength. Examples of such fibers include pulp fibers.
- Pulp fiber is an aggregate of cellulose fibers extracted from plants such as wood, and is usually used as a raw material for paper. Pulp fibers include waste paper pulp, chemical pulp, mechanical pulp and the like.
- the amount of the fibers in the tobacco sheet is preferably 1 to 20% by mass, more preferably 5 to 10% by mass, in terms of mechanical strength and the like, on a dry mass basis.
- the strength can be increased by adjusting the amount of binder.
- the tobacco sheet may contain the flavor described in the first aspect.
- the thickness of the tobacco sheet in this aspect is not limited, but in one aspect it is preferably 20 to 2000 ⁇ m, more preferably 100 to 1500 ⁇ m, still more preferably 100 to 1000 ⁇ m. .
- the tobacco sheet in this embodiment preferably has a tensile stress of 1.7 N/mm or more, more preferably 2 N/mm or more, still more preferably 3 N/mm or more.
- Arithmetic mean surface roughness Sa At least one side of the tobacco sheet in this aspect preferably has an arithmetic mean surface roughness Sa of 0.03 mm or less.
- Sa is an index of surface roughness, and when the tobacco sheet of the present invention has Sa within the above range, splintering from the surface is reduced. From this point of view, the upper limit of Sa is more preferably 0.02 mm or less.
- Tobacco segments for use in smoking articles can be produced from tobacco sheets.
- the tobacco segment in this aspect is as described in the first aspect.
- the tobacco sheet in this aspect can be manufactured by any method, but is preferably manufactured by a method comprising the following steps. Step 1 of preparing a mixture comprising at least a tobacco material, the cellulose derivative and a medium; Step 2 of spreading the mixture on a substrate to prepare a wet sheet, and Step 3 of drying the wet sheet.
- Process 1 This step mixes tobacco material, a cellulose derivative as a binder, and a medium. Aerosol-forming bases, emulsifiers, or fragrances can also be added, if desired. The blending amount of each component is adjusted so as to achieve the aforementioned amounts.
- the medium preferably contains water or a water-soluble organic solvent such as ethanol having a boiling point of less than 100° C. as a main component, and more preferably water or ethanol.
- the mixing method is not limited, and known equipment such as mixers and kneaders can be used.
- the solid content concentration of the mixture obtained by mixing is not limited, and is appropriately adjusted so as to be suitable for step 2.
- the upper limit of the solid content concentration is preferably 98% by mass or less, 90% by mass or less, or 80% by mass or less, and the lower limit is preferably 10% by mass or more, 20% by mass or more, or 30% by mass or more. , 40% by mass or more, or 50% by mass or more.
- the mixture is spread on a substrate to prepare a wet sheet.
- the substrate is not limited, and includes inorganic material substrates such as glass plates, metal substrates such as aluminum plates, organic material substrates such as PET films and fluoropolymer films, and fiber material substrates such as nonwoven fabrics.
- the method of spreading the mixture on the base material is not limited, but as described later, a rolling method of rolling using rollers, an extrusion method of extruding from a die, and a casting method of casting can be mentioned.
- the wet sheet is dried. Drying can be carried out according to known methods.
- the wet sheet can be air dried at room temperature or heated to dry.
- the heating temperature is also not limited, and can be, for example, 60 to 150.degree.
- the dried sheet is separated from the substrate to obtain the tobacco sheet.
- a binder and, if necessary, additives such as flavor and lipid are added and mixed. Since this mixing is preferably a dry blend, it is preferred to use a mixer as a mixer.
- a medium such as water and, if necessary, an aerosol-generating base material such as glycerin are added to the dry blend and mixed in a mixer to prepare a wet powder (powder in a wet state).
- the amount of the medium in the wet powder can be 20 to 80% by mass, preferably 20 to 40% by mass.
- the wet powder preferably has a solid content concentration of 50 to 90% by mass.
- the wet powder is kneaded using a uniaxial or multiaxial kneader such as a kneader (DG-1 manufactured by Dalton Co., etc.).
- a kneader DG-1 manufactured by Dalton Co., etc.
- the kneading is preferably carried out until the medium spreads over the whole.
- kneading is preferably carried out until the color of the mixture becomes uniform visually.
- Process 2 While sandwiching the mixture after kneading between two base films, it is passed between a pair of rollers until it reaches a predetermined thickness (more than 100 ⁇ m) using a calender device (manufactured by Yuri Roll Machinery Co., Ltd.). , to obtain a laminate with a wet sheet between the two substrate films. Roller compression can be performed multiple times.
- the base film is preferably a non-adhesive film such as a fluoropolymer film, specifically a Teflon (registered trademark) film.
- Process 3 One of the base films in the laminate is peeled off.
- the laminate is dried using an air dryer.
- the drying temperature is preferably 50-100° C. and the drying time can be 1-2 minutes.
- the remaining base film is peeled off and dried under the above conditions to obtain a tobacco sheet. Drying in this way can prevent the tobacco sheet from adhering to other substrates.
- the tobacco sheet obtained by this method is also called "laminate sheet".
- the laminate sheet is preferable because it has a smooth surface and can suppress the occurrence of chipping when it comes into contact with other members. Also, the method is suitable for producing sheets of 300 ⁇ m or less.
- Step 1 in this method is as described in the rolling method.
- Prepare wet flour (wet flour).
- the amount of the medium in the wet powder can be selected in the range of 20-80% by mass, preferably 20-40% by mass.
- Process 2 In this step, the wet powder is extruded through a die provided with a predetermined gap to form a wet sheet on the substrate. A known extruder can be used for extrusion.
- Process 3 In this step, the wet sheet is dried to obtain a tobacco sheet. The drying conditions are as described for the rolling method.
- the tobacco sheet obtained by this method is also called an "extruded sheet".
- the extruded sheet is preferable because it has a smooth surface and can suppress the occurrence of chipping when it comes into contact with other members.
- the method is suitable for producing sheets of 200 ⁇ m and above.
- a sheet molded under pressure in this way is called a "pressure-molded sheet”, and "pressure-molded sheet” includes “laminate sheet” and "extruded sheet”.
- a laminate sheet is a sheet obtained by rolling a mixture to a target thickness with rollers one or more times and then drying to a target moisture content.
- An extruded sheet is a sheet obtained by extruding a mixture from a T-die or the like to a target thickness and then drying to a target moisture content. Flattening and extrusion may be combined in pressure formed sheets. For example, the mixture may be extruded and then further rolled into a sheet.
- Process 1 Step 1 in the method can be performed in any manner.
- a mixture can be prepared by mixing a tobacco raw material having a desired particle size, a cellulose derivative, a medium, and, if necessary, additives with a mixer or the like. Since the solid content concentration of the mixture obtained in this step is preferably about 3 to 15% by mass, the mixture is also called slurry.
- Process 2 In this step, the slurry is cast on the substrate to form a wet sheet. Casting can be carried out as known.
- Process 3 the wet sheet is dried to obtain a tobacco sheet.
- the drying conditions are as described for the rolling method.
- the tobacco sheet obtained by this method is also called "cast sheet".
- Tobacco lamina (leaf tobacco) was dry pulverized with a Hosokawa Micron ACM machine to obtain tobacco powder.
- Mastersizer (trade name, manufactured by Spectris Co., Ltd., Malvern Panalytical Division) was used to determine the cumulative 50% particle size (D50) and the cumulative 90% particle size distribution of the volume-based particle size distribution according to the dry laser diffraction method.
- Particle diameters (D90) were measured to be 57 ⁇ m and 216 ⁇ m, respectively.
- a tobacco sheet was produced by a rolling method using the tobacco powder. Specifically, 87 parts by mass of the tobacco powder, 12 parts by mass of glycerin as an aerosol generator, and 1 part by mass of carboxymethyl cellulose as a molding agent were mixed and kneaded by an extruder. The kneaded product was formed into a sheet by two pairs of metal rolls and dried in a hot air circulating oven at 80° C. to obtain a tobacco sheet. The tobacco sheet was shredded to a size of 0.8 mm ⁇ 9.5 mm using a shredder.
- the swelling properties of the shredded tobacco sheets were measured. Specifically, the cut tobacco sheets were left in a conditioning room at 22° C. and 60% for 48 hours, and then measured for swelling with DD-60A (trade name, manufactured by Borgwald). The measurement was carried out by placing 15 g of cut tobacco sheets in a cylindrical container having an inner diameter of 60 mm and compressing the container with a load of 3 kg for 30 seconds to determine the volume. Table 1 shows the results. In addition, in Table 1, the swelling property is shown as an increase rate (%) of the swelling property with respect to the reference value of the swelling property value of Comparative Example 1 described later.
- Example 2 As the tobacco powder, tobacco powder having a cumulative 50% particle size (D50) and a cumulative 90% particle size (D90) in the volume-based particle size distribution according to the dry laser diffraction method was 121 ⁇ m and 389 ⁇ m, respectively. A tobacco sheet was produced in the same manner as in Example 1 and evaluated. Table 1 shows the results.
- Example 3 As the tobacco powder, tobacco powder having a cumulative 50% particle size (D50) and a cumulative 90% particle size (D90) in the volume-based particle size distribution according to the dry laser diffraction method was 225 ⁇ m and 623 ⁇ m, respectively. A tobacco sheet was produced in the same manner as in Example 1 and evaluated. Table 1 shows the results.
- tobacco powder having a cumulative 50% particle size (D50) and a cumulative 90% particle size (D90) in the volume-based particle size distribution according to the dry laser diffraction method was 32 ⁇ m and 84 ⁇ m, respectively.
- a tobacco sheet was produced in the same manner as in Example 1 and evaluated. Table 1 shows the results.
- Example 1 which are the tobacco sheets according to the present embodiment, were expanded compared to the tobacco sheet of Comparative Example 1, in which D90 of the tobacco powder measured by the dry laser diffraction method was less than 200 ⁇ m. Improved bulkiness.
- the tobacco sheets were produced by the rolling method, but when the tobacco sheets were similarly produced by the casting method, the swelling property was improved.
- a kneader (DG-1, manufactured by Dalton), the wet powder was kneaded six times at room temperature to obtain a mixture.
- a T-die was used as the die, and the screw rotation speed was 38.5 rpm.
- Teflon (registered trademark) film was peeled off from the laminate and dried at 80°C for 1 to 2 minutes using a ventilation dryer. Next, another film was peeled off, the wet sheet was dried under the same conditions, and the tobacco sheet of the present invention was produced and evaluated.
- the crushed tobacco leaf, glycerin, and binder show the dry matter amount
- the water is the total amount of the charged weight and the water content contained in the crushed tobacco leaf, glycerin, and binder. show.
- a tobacco sheet was produced by a papermaking method according to a standard method. Specifically, the water-soluble component of the tobacco raw material is extracted with water, the extraction residue, pulp and water are mixed, beaten using a grinder, formed into a sheet with a paper machine, the sheet is dried, The extract and glycerin were added to the sheet.
- the tobacco sheet was evaluated in the same manner as in Reference Example A1. The composition of the sheet is shown in Table A2. Table A3 shows the evaluation results of the tobacco sheets produced in the above examples.
- the evaluation method will be described below.
- the tobacco sheets prepared in each example were cut to prepare cut pieces.
- a wrapper 22 having a length of 12 mm and a diameter of 7 mm was filled with the cut pieces at 70% by volume to prepare a tobacco-containing segment 20A.
- a flavor inhalation article 1 shown in FIG. 1 comprising the tobacco-containing segment was prepared.
- a system (internal heating type) as shown in FIG. 2 was prepared and subjected to a smoking test (14 puffs, CIR conditions, constant heating at 350° C.) using a smoking machine. After the smoking test, the mince were gently removed from the tobacco segment 20A. Then, the minced meat was newly filled into the wrapper 22 again at the above volume % and subjected to the second smoking test. A total of 20 smoking tests were conducted in this manner, and the volume of total minced spillage remaining in the wrapper 22 was measured.
- Tobacco leaves were pulverized using a pulverizer (ACM-5 manufactured by Hosokawa Micron) so that D90 was 50 to 800 ⁇ m to obtain leaf tobacco particles. D90 was measured with a Mastersizer (manufactured by Malvern).
- Leaf tobacco particles and carboxymethyl cellulose (Sunrose FF30MC manufactured by Nippon Paper Industries Co., Ltd.) as a binder were dry-blended using a mixer. Then, glycerin as an aerosol-generating base and water as a medium were added to the dry blend and mixed in a mixer to prepare a wet powder.
- the composition of each component is as follows.
- the crushed tobacco leaf material, glycerin, and binder indicate the amount of dry matter
- water indicates the total amount of the charged mass and the weight of water contained in the crushed tobacco leaf material, glycerin, and binder.
- the wet powder was kneaded six times at room temperature to obtain a mixture.
- the shape of the die was T-shaped (T die), and the screw rotation speed was 38.5 rpm.
- Teflon (registered trademark) film was peeled off from the laminate and dried at 80°C for 1 to 2 minutes using a ventilation dryer. Next, another film was peeled off, and the wet sheet was dried under the same conditions to produce a tobacco sheet according to this embodiment.
- the evaluation method will be described below.
- the tobacco sheets prepared in each example were cut to prepare cut pieces.
- a wrapper 22 having a length of 12 mm and a diameter of 7 mm was filled with the cut pieces at 70% by volume to prepare a tobacco-containing segment 20A.
- a flavor inhalation article 1 shown in FIG. 1 comprising the tobacco-containing segment was prepared.
- a system (internal heating type) as shown in FIG. 2 was prepared and subjected to a smoking test (14 puffs, CIR conditions, constant heating at 350° C.) using a smoking machine. After the smoking test, the mince were gently removed from the tobacco segment 20A. Then, the minced meat was newly filled into the wrapper 22 again at the above volume % and subjected to the second smoking test. A total of 20 smoking tests were conducted in this manner, and the volume of total minced spillage remaining in the wrapper 22 was measured.
- a tobacco sheet for a non-combustion heating type flavor inhaler containing tobacco powder having a cumulative 90% particle size (D90) of 200 ⁇ m or more in a volume-based particle size distribution measured by a dry laser diffraction method.
- D90 cumulative 90% particle size
- the tobacco powder is at least one tobacco raw material selected from the group consisting of leaf tobacco, backbone and residual stem.
- the tobacco sheet for a non-combustion heating type flavor inhaler according to any one of [1] to [3], further comprising an aerosol generator.
- the tobacco sheet for a non-combustion heating type flavor inhaler according to any one of [1] to [6], further comprising a molding agent.
- the proportion of the molding agent contained in 100% by mass of the tobacco sheet is 0.1 to 15% by mass.
- a non-combustion heating flavor inhaler comprising a tobacco-containing segment including the tobacco sheet for a non-combustion heating flavor inhaler according to any one of [1] to [9].
- [1A] A tobacco sheet comprising a tobacco material and a binder, wherein at least one surface has an arithmetic mean surface roughness Sa of 5 to 30 ⁇ m.
- [2A] The sheet of [1A], which is a pressure-molded sheet.
- [3A] The sheet according to [1A] or [2A], wherein the binder content is 6% by mass or less in terms of dry mass relative to the dry mass of the tobacco sheet.
- [4A] The tobacco sheet according to [1A], wherein both surfaces have an arithmetic mean surface roughness Sa of 5 to 30 ⁇ m.
- [5A] The sheet according to any one of [1A] to [4A], having a tensile elongation of 5 to 15%.
- [6A] A non-combustion heating smoking article comprising the tobacco sheet according to any one of [1A] to [5A] or a material derived therefrom.
- [9A] The production method of [7A] or [8A], wherein the step 1 includes kneading at least the tobacco material, the binder and the medium with a single-screw or multi-screw kneader.
- [10A] The production method according to any one of [7A] to [9A], wherein the mixture contains 20 to 80% by mass of the medium relative to the total amount of the mixture.
- step 1 includes kneading the tobacco material, the cellulose derivative, and the medium with a single-screw or multi-screw kneader.
- step 2 includes pressing the mixture with a roller or extruding it through a die.
- step 2 includes preparing a laminate sheet in which a wet sheet is present between two base films.
- step 2 includes preparing a laminate sheet in which a wet sheet is present between two base films.
- step 2 includes preparing a laminate sheet in which a wet sheet is present between two base films.
- step 2 includes preparing a laminate sheet in which a wet sheet is present between two base films.
- step 2 includes preparing a laminate sheet in which a wet sheet is present between two base films.
- a non-combustion heating smoking article comprising the tobacco sheet according to any one of [1B] to [6B] or a material derived therefrom.
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Abstract
Description
乾式レーザー回折法により測定される体積基準の粒度分布における累積90%粒子径(D90)が200μm以上であるたばこ粉末を含む、非燃焼加熱型香味吸引器用たばこシート。
態様2
少なくとも1つの面の算術平均表面粗さSaが5~30μmである、態様1に記載のシート。
態様3
圧力成形シートである、態様1または2に記載のシート。
態様4
置換度が0.65以上であるセルロース誘導体を含む、態様1~3のいずれか一項に記載のシート。
態様5
前記置換度が0.7以上である、態様4に記載のシート。
態様6
態様1~5のいずれか一項に記載の非燃焼加熱型香味吸引器用たばこシートを含むたばこ含有セグメント、
を備える非燃焼加熱型香味吸引器。
態様7
態様6に記載の非燃焼加熱型香味吸引器と、
前記たばこ含有セグメントを加熱する加熱装置と、
を備える非燃焼加熱型香味吸引システム。
本実施形態に係る非燃焼加熱型香味吸引器用たばこシート(以下、「たばこシート」ともいう。)は、乾式レーザー回折法により測定される体積基準の粒度分布における累積90%粒子径(D90)が200μm以上であるたばこ粉末を含む。
本実施形態に係るたばこシートに含まれるたばこ粉末としては、例えば葉たばこ、中骨、残幹等が挙げられる。これらは一種を用いてもよく、二種以上を併用してもよい。これらを所定の大きさに裁刻することで、たばこ粉末として使用することができる。たばこ粉末の大きさとしては、乾式レーザー回折法により測定される体積基準の粒子径分布における累積90%粒子径(D90)が200μm以上であり、350μm以上であることが好ましく、500μm以上であることがより好ましい。該D90の範囲の上限は特に限定されないが、例えば2000μm以下であることができる。
本実施形態に係るたばこシートは、加熱時の煙量増加の観点から、さらにエアロゾル発生剤を含むことが好ましい。エアロゾル発生剤としては、例えばグリセリン、プロピレングリコール、1,3-ブタンジオール等が挙げられる。これらは一種を用いてもよく、二種以上を併用してもよい。
本実施形態に係るたばこシートは、形状担保の観点から、さらに成型剤を含むことが好ましい。成型剤としては、例えば多糖類、タンパク、合成ポリマー等が挙げられる。これらは一種を用いてもよく、二種以上を併用してもよい。多糖類としては、例えばセルロース誘導体、天然由来の多糖類が挙げられる。
本実施形態に係るたばこシートは、更なる物性向上の観点から、さらに補強剤を含むことができる。補強剤としては、例えばファイバー状パルプ、不溶性繊維、ファイバー状合成セルロース等の繊維状物質、ペクチン懸濁水など乾燥すると膜を形成する表面コーティング機能をもった液状物質等が挙げられる。これらは一種を用いてもよく、二種以上を併用してもよい。
本実施形態に係るたばこシートは、品質保持の観点から、さらに保湿剤を含むことができる。保湿剤としては、例えばソルビトール、エリスリトール、キシリトール、マルチトール、ラクチトール、マンニトール、還元麦芽糖水飴等の糖アルコール等が挙げられる。これらは一種を用いてもよく、二種以上を併用してもよい。
本実施形態に係るたばこシートは、前記たばこ粉末、前記エアロゾル発生剤、前記成型剤、前記補強剤、前記保湿剤以外にも、必要に応じて香料、呈味料等の香味料、着色剤、湿潤剤、保存料、無機物質等の希釈剤等を含むことができる。
本実施形態に係るたばこシートの膨嵩性は、190cc/100g以上であることが好ましい。該膨嵩性が190cc/100g以上であることにより、非燃焼加熱型香味吸引器のたばこ含有セグメントの総熱容量を十分に低減することができ、たばこ含有セグメントに充填されたたばこシートがエアロゾル生成により寄与できるようになる。該膨嵩性は210cc/100g以上であることがより好ましく、230cc/100g以上であることがさらに好ましい。該膨嵩性の範囲の上限は特に限定されないが、例えば800cc/100g以下であることができる。なお、該膨嵩性は、たばこシートを0.8mm×9.5mmのサイズに裁刻し、22℃、60%の調和室内で48時間存置した後、DD-60A(商品名、ボルグワルド社製)にて測定される値である。測定は、裁刻されたたばこシート15gを内径60mmの円筒形容器に入れ、3kg荷重で30秒圧縮した時の容積を求めることで行われる。
本実施形態において「たばこシート」とは、たばこ粉末等のたばこシートを構成する成分がシート形状に成形されたものである。ここで「シート」とは、略平行な1対の主面、及び側面を有する形状をいう。たばこシートの長さ及び幅は、特段制限されることはなく、充填する態様に合わせて適宜調整できる。たばこシートの厚さは、特に限定されないが、伝熱効率と強度の兼ね合いから、100~1000μmが好ましく、150~600μmがより好ましい。
本実施形態に係るたばこシートは、例えば圧延法、キャスト法等の公知の方法で製造することができる。このような方法で製造された各種たばこシートについては、「たばこの事典、たばこ総合研究センター、2009.3.31」に詳細が開示されている。
圧延法によりたばこシートを製造する方法としては、例えば、以下の工程を含む方法を挙げることができる。
(1)水、たばこ粉末、エアロゾル発生剤、成型剤、及び補強剤を混合して混合物を得る工程。
(2)当該混合物を圧延ローラーに投入して圧延する工程。
(3)圧延成形品を乾燥機で乾燥する工程。
この方法でたばこシートを製造する場合、目的に応じて、圧延ローラーの表面を加温又は冷却してもよく、圧延ローラーの回転数を調整してもよい。また、圧延ローラーの間隔を調整しても良い。所望の坪量のたばこシートを得るために1つ以上の圧延ローラーを用いることができる。
キャスト法によりたばこシートを製造する方法としては、例えば、以下の工程を含む方法を挙げることができる。
(1)水、たばこ粉末、エアロゾル発生剤、成型剤、及びパルプを混合して混合物を得る工程。
(2)当該混合物を薄く延ばして(キャストして)乾燥し、たばこシートとする工程。
この方法でたばこシートを製造する場合、水、たばこ粉末、エアロゾル発生剤、成型剤、及びパルプを混合したスラリーに対して紫外線照射もしくはX線照射することで、ニトロソアミン等の一部の成分を除去する工程を加えてもよい。
本実施形態に係る非燃焼加熱型香味吸引器は、本実施形態に係るたばこシート等を含むたばこ含有セグメントを備える。本実施形態に係る非燃焼加熱型香味吸引器は、本実施形態に係る膨嵩性の高いたばこシート等が充填されたたばこ含有セグメントを備えるため、たばこ含有セグメントの総熱容量を十分に低減することができ、たばこ含有セグメントに充填されたたばこシートがエアロゾル生成により寄与できるようになる。
たばこ含有セグメント2は、本実施形態に係るたばこシート等が巻紙(以下、ラッパーともいう)内に充填されている。たばこシート等を巻紙(以下、ラッパーともいう)内に充填する方法は特に限定されないが、例えばたばこシート等をラッパーで包んでもよく、筒状のラッパー内にたばこシート等を充填してもよい。たばこシートの形状が矩形状のように長手方向を有する場合、たばこシート等は該長手方向がラッパー内でそれぞれ不特定の方向となるように充填されていてもよく、たばこ含有セグメント2の軸方向又は該軸方向に対して垂直な方向となるように整列させて充填されていてもよい。
図1に示されるように、冷却セグメント3は筒状部材7で構成される態様を挙げることができる。筒状部材7は例えば厚紙を円筒状に加工した紙管であってもよい。
センターホールセグメントは1つまたは複数の中空部を有する充填層と、該充填層を覆うインナープラグラッパー(内側巻紙)とで構成される。例えば、図1に示されるように、センターホールセグメント4は、中空部を有する第二の充填層9と、第二の充填層9を覆う第二のインナープラグラッパー10とで構成される。センターホールセグメント4は、マウスピースセグメント6の強度を高める機能を有する。第二の充填層9は、例えば酢酸セルロース繊維が高密度で充填されトリアセチンを含む可塑剤が酢酸セルロース質量に対して、6質量%以上、20質量%以下添加されて硬化された内径φ1.0mm以上、φ5.0mm以下のロッドとすることができる。第二の充填層9は繊維の充填密度が高いため、吸引時は、空気やエアロゾルは中空部のみを流れることになり、第二の充填層9内はほとんど流れない。センターホールセグメント4内部の第二の充填層9が繊維充填層であることから、使用時の外側からの触り心地は、使用者に違和感を生じさせることが少ない。なお、センターホールセグメント4が第二のインナープラグラッパー10を持たず、熱成型によってその形が保たれていてもよい。
フィルターセグメント5の構成は特に限定されないが、単数または複数の充填層から構成されてよい。充填層の外側は一枚または複数枚の巻紙で巻装されてよい。フィルターセグメント5のセグメント当たりの通気抵抗は、フィルターセグメント5に充填される充填物の量、材料等により適宜変更することができる。例えば、充填物が酢酸セルロース繊維である場合、フィルターセグメント5に充填される酢酸セルロース繊維の量を増加させれば、通気抵抗を増加させることができる。充填物が酢酸セルロース繊維である場合、酢酸セルロース繊維の充填密度は0.13~0.18g/cm3であることができる。なお、通気抵抗は通気抵抗測定器(商品名:SODIMAX、SODIM製)により測定される値である。
本実施形態に係る非燃焼加熱型香味吸引システムは、本実施形態に係る非燃焼加熱型香味吸引器と、該非燃焼加熱型香味吸引器のたばこ含有セグメントを加熱する加熱装置と、を備える。本実施形態に係る非燃焼加熱型香味吸引システムは、本実施形態に係る非燃焼加熱型香味吸引器及び前記加熱装置以外に、他の構成を有していてもよい。
本態様におけるたばこシートとは少なくともたばこ材料と、バインダーとを含む。
バインダーは前述の成型剤の一種であり、たばこ材料同士、またはたばこ材料と他の成分を結合するための接着剤である。本態様においては、公知のバインダーを使用できる。かかるバインダーとしては、例えば、グアーガム、キサンタンガム等の多糖類、CMC(カルボキシメチルセルロース)、CMC-Na(カルボキシメチルセルロースのナトリウム塩)、HPC(ヒドロキシプロピルセルロース)等のセルロース誘導体を挙げることができる。バインダーの含有量の上限は、たばこシートの乾燥質量に対して、乾燥質量(混入している水を除いた質量、以下同様)で、好ましくは6質量%以下、であり、下限は好ましくは1質量%以上、より好ましくは3質量%以上である。バインダーの量が上限値を超えるまたは下限値未満であると、前記効果が十分に奏されない可能性がある。
1-1)セルロース誘導体
[セルロースエーテル類]
メチルセルロース、エチルセルロース、ヒドロキシエチルセルロース、ヒドロキシメチルエチルセルロース、ヒドロキシプロピルセルロース、ヒドロキシプロピルメチルセルロース、ベンジルセルロース、トリチルセルロース、シアノエチルセルロース、カルボキシメチルセルロース、カルボキシエチルセルロース、アミノエチルセルロース
[セルロースエステル類]
有機酸エステル:酢酸セルロース、ギ酸セルロース、プロピオン酸セルロース、酪酸セルロース、安息香酸セルロース、フタル酸セルロース、トシルセルロース
無機酸エステル:硝酸セルロース、硫酸セルロース、リン酸セルロース、セルロースキサントゲン酸塩
[植物由来]
グアーガム、タラガム、ローストビーンガム、タマリンド種子ガム、ペクチン、アラビアガム、トラガントガム、カラヤガム、ガッティガム、アラビノガラクタン、アマシードガム、カッシャガム、サイリウムシードガム、サバクヨモギシードガム
[藻類由来]
カラギーナン、寒天、アルギン酸、アルギン酸プロピレングリコールエステル、ファーセレラン、フクロノリ抽出物
[微生物由来]
キサンタンガム、ジェランガム、カードラン、プルラン、アグロバクテリウムスクシノグリカン、ウェランガム、マクロホモプシスガム、ラムザンガム
[甲殻類由来]
キチン、キトサン、グルコサミン
[デンプン類]
デンプン、デンプングリコール酸ナトリウム、α化デンプン、デキストリン
小麦グルテン、ライ麦グルテン
ポリリン酸、ポリアクリル酸ナトリウム、ポリビニルピロリドン
本態様で用いるたばこ材料は、前記たばこ粉末であることが好ましい。ただし、発明の効果を損なわない範囲で、本態様においては前記たばこ粉末以外の材料を用いてもよい。前記たばこ粉末以外の材料としては、具体的に、乾燥したたばこ葉を刻んだもの、または葉たばこ粉砕物等を用いることができる。葉たばこ粉砕物は、葉たばこを粉砕することにより得られる粒子である。葉たばこ粉砕物の粒径D90は限定されないが、その上限は好ましくは1000μm以下、より好ましくは50~500μmとすることができる。またその平均粒径D50を好ましくは20~1000μm、より好ましくは50~500μmとすることができる。粉砕は、公知の粉砕機を用いて行うことができ、乾式粉砕、湿式粉砕のいずれであってもよい。したがって、葉たばこ粉砕物は葉たばこ粒子とも称される。本態様において粒径は、レーザー回折・散乱法により求められ、具体的にはレーザー回折式粒子径分布測定装置(例えば、堀場製作所 LA-950)を用いて測定される。また、たばこの種類は限定されず、黄色種、バーレー種、オリエント種、在来種、および、その他のニコチアナ・タバカム系品種やニコチアナ・ルスチカ系に属する品種等を用いることができる。たばこシートにおけるたばこ材料の量は、特に限定されないが、乾燥質量で、好ましくは50~95質量%、より好ましくは60~90質量%である。
本態様においても、エアロゾル発生剤として、公知のものを用いることができるが、その例としてはグリセリン、プロピレングリコール(PG)等の多価アルコール、トリエチルシトレート(TEC)、トリアセチン等の沸点が100℃を超えるものが挙げられる。本態様においてたばこシートにおけるエアロゾル発生剤の量は、乾燥質量(混入している水を除いた質量、以下同様)で、好ましくは5~40質量%、より好ましくは10~20質量%である。エアロゾル発生剤の量が上限値を超えるとたばこシートの製造が困難となるおそれがあり、下限値未満であると煙感量が低下するおそれがある。
本態様においてたばこシートは乳化剤を含んでいてもよい。乳化剤は親油性であるエアロゾル発生剤と親水性であるたばこ材料の親和性を高める。よって、特に親油性のエアロゾル発生剤を用いる場合に乳化剤の添加は効果的である。乳化剤としては公知のものを用いることができるが、その例としては8~18のHLB値を有する乳化剤が挙げられる。乳化剤の量は、特に限定されないがたばこシート100質量部に対して、乾燥質量で、好ましくは0.1~3質量部、より好ましくは1~2質量部である。
本態様のたばこシートは、一態様においてたばこ由来の繊維およびたばこ以外の材料(例えばセルロース)に由来する繊維を含まない。本態様では、これらの繊維によって喫味に雑味等の望ましくない影響が及ぼされることを回避できる。ただし、完全に繊維を排除することは現実的でないので、たばこシートにおける前記繊維の量は、乾燥質量で好ましくは1.0質量%、より好ましくは0.5質量%である。また、本態様のたばこシートは、別態様においてたばこ由来の繊維、またはたばこ以外の材料に由来する繊維を合計で0.5~2.0質量%含有する。本態様においては前記繊維によってたばこシートの強度が向上し、喫味と強度のバランスに優れる。本発明においてたばこ由来の繊維とは、たばこ原料を、グラインダー等を用いた叩解によってパルプ化したものをいい、前述のたばこ材料とは異なる。
本態様においてたばこシートは香料を含んでいてもよい。香料とは、香りや風味を提供する物質である。香料は天然香料であってもよいし合成香料であってもよい。香料として1種類の香料を用いてもよいし複数種類の香料の混合物を用いてもよい。香料として、喫煙物品において一般に使用される任意の香料を使用することができるが、その具体例は後述する。香料は、喫煙物品が好ましい香りや風味を提供することができるような量で、喫煙物品用シートに含むことができ、例えば、その量はたばこシート中、好ましくは1~30質量%、より好ましくは2~20質量%である。
1)算術平均表面粗さSa
本態様におけるたばこシートは、少なくとも片面が5~30μmのSaを有することが好ましい。Saは表面粗度の指標であり、本態様のたばこシートが前記範囲のSaを有すると、加工性に優れ、さらには表面からの刻こぼれが低減する。この観点から、Saは、より好ましくは10~25μm、さらに好ましくは10~20μmである。本態様のたばこシートは、両面が前記範囲のSaを有することが好ましい。Saは公知の方法で測定されるが、以下に好ましい測定方法を挙げる。
顕微鏡(例えばKEYENCE社製のVK-X100)を用いて、以下の手順で測定する。
1)シートの一番低い部分の焦点位置を設定
2)シートの一番高い部分の焦点位置を設定
3)前記1)と2)で得た区間を分割し、少しずつ焦点をずらしながら撮像
4)各部分の焦点位置と、一番低い部分の焦点位置の差から高さを測定
5)各位置の高さデータから粗さを算出(測定機ソフトで自動計算)し、算術表面粗さSaを算出
たばこシートの厚さは限定されないが、一態様において好ましくは20~2000μm、より好ましくは100~1500μm、さらに好ましくは100~1000μmである。
本態様におけるたばこシートは、好ましくは2.0%以上、より好ましくは3.0%以上、さらに好ましくは5.0%以上の引張伸率を有する。引張伸率の上限は限定されないが通常は15%以下程度である。また、たばこシートは、好ましくは2.0N/mm以上、より好ましくは2.5N/mm以上、さらに好ましくは3.0N/mm以上の引張応力を有する。
本態様におけるたばこシートの平滑性は、製品の取扱い性に影響を与える。例えば、平滑性の乏しいたばこシートを用いた喫煙物品は、その使用中または使用後に、いわゆる刻こぼれと称される微粉が発生し、衣服に付着する等の取扱い上の不具合が生じうる。しかし、本発明のたばこシートは平滑性に優れるのでこのような不具合の発生を抑制できる。
たばこシートから、喫煙物品に用いるたばこセグメントを製造できる。たばこセグメントは、一態様において筒状のラッパーを備え、当該ラッパー内に渦巻き状に充填されたたばこシートを備える(図3A参照)。図中、20Aはたばこセグメント、Tはたばこシート、22はラッパーであり、通常は紙である。当該たばこセグメントは好ましくはロッド状であり、その長さは15~80mm、直径は5~10mm程度とすることができる。さらに図3Aに記載のたばこセグメント20Aを切断して、アスペクト比(長さ/直径)が0.5~1.2程度とすることもできる(図3B参照)。
本態様におけるたばこシートは任意の方法で製造されうるが、好ましくは以下の工程を備える方法で製造される。
少なくとも、たばこ材料と、バインダーと、媒体とを混練して混合物を調製する工程1。
前記混合物を圧展またはダイから押出してウェットシートを調製する工程2。
前記ウェットシートを乾燥する工程3。
このように圧力をかけて成形されたシートを「圧力成形シート」といい、後述するとおり「圧力成形シート」は「ラミネートシート」と「押出シート」を含む。ラミネートシートとは、混合物を1回以上ローラーで目標厚さまで圧展した後に、目標水分量まで乾燥して得たシートである。押出シートとは、混合物をTダイ等から目標厚さで押出した後に、目標水分量まで乾燥して得たシートである。圧力成形シートにおいて圧展と押出は組み合わせてもよい。例えば、混合物を押出した後にさらに圧展してシートとしてもよい。
本工程は、たばこ材料と、バインダーと、媒体とを混練する。必要に応じて、エアロゾル生成基材、乳化剤、または香料を添加することもできる。各成分の配合量は、前述の量を達成できるように調整される。媒体は、好ましくは例えば水や、エタノール等の沸点が100℃未満である水溶性有機溶媒を主成分とし、より好ましくは水またはエタノールである。
1)粉砕
原料を粗砕し、次いで粉砕機(例えばホソカワミクロン製、ACM-5)を用いて、微粉砕を行うことが好ましい。微粉砕後の粒径D90は好ましくは20~1000μmである。粒径は、マスターサイザー(malvern社製)等のレーザー回折型粒度計を用いて測定される。
粉砕されたたばこ原料(例えば、はたばこ粒子)に、バインダー、必要に応じて香料や脂質等の添加剤を加えて混合する。この混合はドライブレンドであることが好ましいので、混合機としてミキサーを用いることが好ましい。次いで、ドライブレンド物に、水等の媒体、必要に応じてグリセリン等のエアロゾル生成基材を添加し、ミキサーで混合し、湿粉(湿潤状態の粉)を調製する。当該湿粉中の媒体の量は、20~80質量%、好ましくは20~40質量%とすることができるが、工程2によって適宜調製される。例えば、工程2で圧展を行う場合、前記媒体の量は20~50質量%とすることができ、押出しを行う場合は、20~80質量%とすることができる。湿粉の固形分濃度は50~90質量%であることが好ましい。
前記湿粉を、ニーダー(例えば、ダルトン社製DG-1)を用いて混練する。混練は、全体に媒体がいきわたるまで実施することが好ましい、例えば、目視にて混合物の色が均一になるまで混練りすることが好ましい。
本工程では、前記混合物(湿粉)を圧展またはダイから押出してウェットシートを調製する。例えば、混合物を、2枚の基材フィルムに挟み込みながら、カレンダー装置(例えば、由利ロール機械社製)を用いて、所定の厚さ(100μm超)になるまで1対のローラー間に通し、圧展して2枚の基材フィルム間にウェットシートが存在するラミネートを得ることができる。基材フィルムとしてはフッ素系ポリマーフィルム等の非粘着性フィルムが好ましい。ローラーによる圧展は複数回実施することができる。また、前記混合物(湿粉)を所定のギャップを設けたダイ(好ましくはTダイ)から押出して、基材上にウェットシート形成することもできる。基材としては、ガラス板、金属板、プラスチック板などの公知のものを使用できる。押出しには公知の押出機を使用できる。
本工程ではウェットシートを乾燥する。例えば、ラミネートにおいては以下の手順で本工程を実施できる。1)一方の基材フィルムを剥離する。2)当該ラミネートを、通風乾燥機を用いて乾燥する。乾燥温度は室温でもよいが、好ましくは50~100℃であり、乾燥時間は1~2分とすることができる。3)次いで、残りの基材フィルムを剥離し、さらに前記条件で乾燥してたばこシートを得る。このように乾燥を行うことで、たばこシートが他の基材に接着することを回避できる。このようにして得たたばこシートを「ラミネートシート」ともいう。ラミネートシートは表面が滑らかであり、他の部材と接触した場合に刻こぼれの発生を抑制できるので好ましい。また、本方法は300μm以下のシートの製造に適している。
本態様におけるたばこシートは、たばこ材料と、バインダーとして置換度が0.65以上であるセルロース誘導体を含む。
本態様においては、バインダーとして置換度が0.65以上であるセルロース誘導体を用いる。セルロース誘導体とはグルコノピラノース残基の-OH基が変性されているセルロースである。-OH基が、-OR基(Rは有機基)に変性されているものをセルロースエーテル類、-OX基(Xは酸に由来する基)に変性されているものをセルロースエステル類ともいい、本発明においては双方を用いることができる。
置換度=0.162A/(1-0.058A)
A=50×F’-前記硫酸量(ml)×F/絶乾試料質量(g)×0.1
F:前記硫酸のファクター
F’:前記NaOHのファクター
セルロースエーテル類:メチルセルロース、エチルセルロース、ヒドロキシエチルセルロース、ヒドロキシメチルエチルセルロース、ヒドロキシプロピルセルロース、ヒドロキシプロピルメチルセルロース、ベンジルセルロース、トリチルセルロース、シアノエチルセルロース、カルボキシメチルセルロース、カルボキシエチルセルロース、アミノエチルセルロース
セルロースエステル類:酢酸セルロース、ギ酸セルロース、プロピオン酸セルロース、酪酸セルロース、安息香酸セルロース、フタル酸セルロース、トシルセルロース硝酸セルロース等の有機酸エステル類;硫酸セルロース、リン酸セルロース、セルロースキサントゲン酸塩等の無機酸エステル類
本態様において、第1の態様で説明したたばこ材料を用いることができる。
本態様において、たばこシートは第1の態様で説明したエアロゾル発生剤を含んでいてもよい。
本態様において、たばこシートは第1の態様で説明した乳化剤を含んでいてもよい。
本態様において、たばこシートは、たばこ以外のセルロースを含んでいてもよい。たばこ以外のセルロースとは例えば前述のセルロース繊維やセルロースパウダーが挙げられ、バインダーとしてのセルロース誘導体は含まない。セルロース繊維を含むたばこシートは高い強度を有する。当該繊維としては、例えばパルプ繊維が挙げられる。パルプ繊維とは、木材等の植物から取り出されたセルロース繊維の集合体であり、通常は紙の原料として用いられる。パルプ繊維としては、古紙パルプ、化学パルプ、機械パルプ等が挙げられる。
本態様において、たばこシートは第1の態様で説明した香料を含んでいてもよい。
1)厚さ
本態様におけるたばこシートの厚さは限定されないが、一態様において好ましくは20~2000μm、より好ましくは100~1500μm、さらに好ましくは100~1000μmである。
本態様におけるたばこシートは、好ましくは1.7N/mm以上、より好ましくは2N/mm以上、さらに好ましくは3N/mm以上の引張応力を有する。
本態様におけるたばこシートの少なくとも片面は、好ましくは0.03mm以下の算術平均表面粗さSaを有する。Saは表面粗度の指標であり、本発明のたばこシートが前記範囲のSaを有すると、表面からの刻こぼれが低減する。この観点から、Saの上限値は、より好ましくは0.02mm以下である。
たばこシートから、喫煙物品に用いるたばこセグメントを製造できる。本態様におけるたばこセグメントは、第1の態様で説明した通りである。
本態様におけるたばこシートは任意の方法で製造されうるが、好ましくは以下の工程を備える方法で製造される。
少なくとも、たばこ材料と、前記セルロース誘導体と、媒体を含む混合物を調製する工程1、
前記混合物を基材上に展開してウェットシートを調製する工程2、ならびに
前記ウェットシートを乾燥する工程3。
本工程は、たばこ材料と、バインダーであるセルロース誘導体と、媒体とを混合する。必要に応じて、エアロゾル生成基材、乳化剤、または香料を添加することもできる。各成分の配合量は、前述の量を達成できるように調整される。媒体は、好ましくは例えば水や、エタノール等の沸点が100℃未満である水溶性有機溶媒を主成分とし、より好ましくは水またはエタノールである。混合の方法は限定されず、ミキサーやニーダー等の公知の機器を用いることができる。混合によって得られる混合物の固形分濃度は限定されず、工程2に適するように適宜調製される。例えば、当該固形分濃度の上限は、好ましくは98質量%以下、90質量%以下、または80質量%以下であり、その下限は、好ましくは10質量%以上、20質量%以上、30質量%以上、40質量%以上、または50質量%以上である。
本工程では、前記混合物を基材上に展開してウェットシートを調製する。基材としては限定されず、ガラス板等の無機材料基材、アルミ板等の金属基材、PETフィルム、フルオロポリマーフィルムなどの有機材料基材、不織布等の繊維材料基材等が挙げられる。混合物を基材上に展開する方法は限定されないが、後述するようにローラを用いて圧展する圧延法、ダイから押出す押出法、キャストするキャスト法が挙げられる。
本工程では前記ウェットシートを乾燥する。乾燥は公知の方法に従って実施できる。例えば、ウェットシートを室温にて風乾する、あるいは加熱して乾燥することができる。加熱温度も限定されず、例えば60~150℃とすることができる。乾燥されたシートを基材から単離して、たばこシートを得る。
[圧延法]
1)工程1
1-1)粉砕
原料(例えば、単葉)を粗砕する。次いで、粉砕機(例えばホソカワミクロン製、ACM-5)を用いて、微粉砕を行う。微粉砕後の粒径(D90)は好ましくは50~800μmである。粒度は、マスターサイザー(malvern社製)等のレーザ回折型粒度計を用いて測定される。
粉砕されたたばこ原料(例えば、たばこ粒子)に、バインダー、必要に応じて香料や脂質等の添加剤を加えて混合する。この混合はドライブレンドであることが好ましいので、混合機としてミキサーを用いることが好ましい。次いで、ドライブレンド物に、水等の媒体、必要に応じてグリセリン等のエアロゾル生成基材を添加し、ミキサーで混合し、湿粉(湿潤状態の粉)を調製する。当該湿粉中の媒体の量は、20~80質量%、好ましくは20~40質量%とすることができるが、工程2で圧展を行うので20~50質量%としてもよい。湿粉の固形分濃度は50~90質量%であることが好ましい。
前記湿粉を、一軸または多軸の混練機、例えばニーダー(ダルトン社製DG-1等)を用いて混練する。混練は、全体に媒体がいきわたるまで実施することが好ましい、例えば、目視にて混合物の色が均一になるまで混練りすることが好ましい。
混錬後の混合物を、2枚の基材フィルムに挟み込みながら、カレンダー装置(例えば、由利ロール機械社製)を用いて、所定の厚さ(100μm超)になるまで1対のローラ間に通し、圧展して2枚の基材フィルム間にウェットシートが存在するラミネートを得る。ローラによる圧展は複数回実施することができる。基材フィルムは、フッ素系ポリマーフィルム等の非粘着性フィルムが好ましく、具体的にはテフロン(登録商標)フィルムを挙げることができる。
ラミネートにおける、一方の基材フィルムを剥離する。当該ラミネートを、通風乾燥機を用いて乾燥する。乾燥温度は好ましくは50~100℃であり、乾燥時間は1~2分とすることができる。次いで、残りの基材フィルムを剥離し、さらに前記条件で乾燥してたばこシートを得る。このように乾燥を行うことで、たばこシートが他の基材に接着することを回避できる。
1)工程1
本方法における工程1は、圧延法で説明したとおりである。湿粉(湿潤状態の粉)を調製する。工程2で押出を行う場合、当該湿粉中の媒体の量は20~80質量%の範囲で選択できるが、好ましくは20~40質量%である。
2)工程2
本工程では湿粉を所定のギャップを設けたダイから押出して、基材上にウェットシート形成する。押出しには公知の押出機を使用できる。
3)工程3
本工程ではウェットシートを乾燥してたばこシートを得る。乾燥条件は圧延法で説明したとおりである。本方法で得たたばこシートを「押出シート」ともいう。押出シートは表面が滑らかであり、他の部材と接触した場合に刻こぼれの発生を抑制できるので好ましい。本方法は200μm以上のシートの製造に適している。
1)工程1
本方法における工程1は任意の方法で実施できる。例えば、所望の粒度を有するたばこ原料と、セルロース誘導体と、媒体と、必要に応じて添加物をミキサー等で混合することで混合物を調製できる。本工程で得られる混合物の固形分濃度は、好ましくは3~15質量%程度であるので、混合物はスラリーとも称される。
本工程では基材上にスラリーをキャストし、ウェットシートを形成する。キャストは公知のとおりに実施できる。
本工程ではウェットシートを乾燥してたばこシートを得る。乾燥条件は圧延法で説明したとおりである。本方法で得たたばこシートを「キャストシート」ともいう。
たばこラミナ(葉たばこ)をホソカワミクロンACM機にて乾式粉砕し、たばこ粉末を得た。該たばこ粉末について、マスターサイザー(商品名、スペクトリス株式会社マルバーン・パナリティカル事業部製)を用いて、乾式レーザー回折法による体積基準の粒子径分布における累積50%粒子径(D50)及び累積90%粒子径(D90)を測定したところ、それぞれ57μm、216μmであった。
たばこ粉末として、乾式レーザー回折法による体積基準の粒子径分布における累積50%粒子径(D50)及び累積90%粒子径(D90)が、それぞれ121μm、389μmであるたばこ粉末を用いた以外は、実施例1と同様にたばこシートを作製し、評価した。結果を表1に示す。
たばこ粉末として、乾式レーザー回折法による体積基準の粒子径分布における累積50%粒子径(D50)及び累積90%粒子径(D90)が、それぞれ225μm、623μmであるたばこ粉末を用いた以外は、実施例1と同様にたばこシートを作製し、評価した。結果を表1に示す。
たばこ粉末として、乾式レーザー回折法による体積基準の粒子径分布における累積50%粒子径(D50)及び累積90%粒子径(D90)が、それぞれ32μm、84μmであるたばこ粉末を用いた以外は、実施例1と同様にたばこシートを作製し、評価した。結果を表1に示す。
たばこ葉を、粉砕機(ホソカワミクロン製ACM-5)を用いてD90が204μm、D50が66μmとなるように粉砕して葉たばこ粒子を得た。D90およびD50はマスターサイザー(malvern社製)にて測定した。葉たばこ粒子とバインダーとしてサンローズF20HC(日本製紙株式会社製セルロースエーテル)とをミキサーを用いてドライブレンドした。次いで、当該ドライブレンド物に、エアロゾル生成基材としてグリセリンと、媒体として水を添加し、ミキサーで混合して湿粉を調製した。各成分の配合は表A1に示すとおりである。
バインダーとしてサンローズF20HC(日本製紙株式会社製セルロースエーテル)の代わりに、サンローズF30MC、およびサンローズF20LCをそれぞれ用いた以外は、参考例A1と同じ方法でたばこシートを製造し、評価した。
バインダーとしてサンローズF20HC(日本製紙株式会社製セルロースエーテル)の代わりに、サンローズF30MCを用い、その配合量を表A3に示すように変更し、かつグリセリンの量を仕込み質量割合で15.5DB質量%となるように変更した以外は、参考例A1と同じ方法でたばこシートを製造し、評価した。
参考例A1と同じ方法でD90が204μm、D50が66μmである葉たばこ粒子を得た。参考例A1と同じ成分およびパルプをミキサーで混合して混合物を得た。当該混合物を用いて定法に従いキャスト法によってたばこシートを製造した。
定法に従って抄造法によるたばこシートを製造した。具体的には、たばこ原料の水溶性成分を水で抽出し、抽出残渣とパルプと水とを混合し、グラインダーを用いてこれを叩解し、抄紙機でシートを形成し、シートを乾燥し、前記抽出物とグリセリンを当該シートに添加した。参考例A1と同じ方法で当該たばこシートを評価した。シートの組成を表A2に示した。また、上記例で製造したたばこシートの評価結果を表A3に示した。
[刻こぼれ体積]
各例で調製したたばこシートを裁断して刻を調製した。当該刻を長さ12mm、直径7mmのラッパー22内に70体積%で充填し、たばこ含有セグメント20Aを調製した。次いで、当該たばこ含有セグメントを備える、図1に示す香味吸引物品1を調製した。図2に示すようなシステム(ただし内部加熱タイプとした)を準備し、これを喫煙機による喫煙試験(14パフ、CIR条件、350℃での一定加熱)に供した。喫煙試験後、たばこセグメント20Aから刻を静かに除去した。次いで前記体積%で新たに刻を再度ラッパー22内に充填して2回目の喫煙試験に供した。このようにして合計20回の喫煙試験を行い、ラッパー22内に残留した総刻こぼれの体積を測定した。
顕微鏡(KEYENCE社製のVK-X100)を用いて、以下の手順で測定した。
1)シートの一番低い部分の焦点位置を設定
2)シートの一番高い部分の焦点位置を設定
3)前記1)と2)で得た区間を分割し、少しずつ焦点をずらしながら撮像
4)各部分の焦点位置と、一番低い部分の焦点位置の差から高さを測定
5)各位置の高さデータから粗さを算出(測定機ソフトで自動計算)し、算術表面粗さSaを算出
得られたシートを幅15mm×長さ180mmに裁断し、引張強度試験機(株式会社東洋精機製作所:ストログラフE-S)を用い、ROADRANGE:25、SPEEDRANGE:50の条件で測定し、引張強度を引張応力で評価した。
たばこ葉を、粉砕機(ホソカワミクロン製ACM-5)を用いてD90が50~800μmとなるように粉砕して葉たばこ粒子を得た。D90はマスターサイザー(malvern社製)にて測定した。葉たばこ粒子とバインダーとしてカルボキシメチルセルロース(日本製紙株式会社製、サンローズF F30MC)とをミキサーを用いてドライブレンドした。次いで、当該ドライブレンド物に、エアロゾル生成基材としてグリセリンと、媒体として水を添加し、ミキサーで混合して湿粉を調製した。各成分の配合は以下のとおりである。
バインダーとして表B2に示すカルボキシメチルセルロース(いずれも日本製紙株式会社製)をそれぞれ用いた以外は、参考例B1と同じ方法でたばこシートを製造し、評価した。
バインダーとして表B2に示すカルボキシメチルセルロース(日本製紙株式会社製)をそれぞれ用いた以外は、参考例B1と同じ方法でたばこシートを製造し、評価した。これらの結果を表B3に示す。表中、仕上がりシート物性は、前述のとおりに乾燥を経て製造されたシートであって、絶乾状態までは乾燥していないシートの物性を示している。
[刻こぼれ体積]
各例で調製したたばこシートを裁断して刻を調製した。当該刻を長さ12mm、直径7mmのラッパー22内に70体積%で充填し、たばこ含有セグメント20Aを調製した。次いで、当該たばこ含有セグメントを備える、図1に示す香味吸引物品1を調製した。図2に示すようなシステム(ただし内部加熱タイプとした)を準備し、これを喫煙機による喫煙試験(14パフ、CIR条件、350℃での一定加熱)に供した。喫煙試験後、たばこセグメント20Aから刻を静かに除去した。次いで前記体積%で新たに刻を再度ラッパー22内に充填して2回目の喫煙試験に供した。このようにして合計20回の喫煙試験を行い、ラッパー22内に残留した総刻こぼれの体積を測定した。
顕微鏡(KEYENCE社製のVK-X100)を用いて、以下の手順で測定した。
1)シートの一番低い部分の焦点位置を設定
2)シートの一番高い部分の焦点位置を設定
3)前記1)と2)で得た区間を分割し、少しずつ焦点をずらしながら撮像
4)各部分の焦点位置と、一番低い部分の焦点位置の差から高さを測定
5)各位置の高さデータから粗さを算出(測定機ソフトで自動計算)し、算術表面粗さSaを算出
刻こぼれ体積に記載した条件で非燃焼内部加熱型喫煙システムを準備し、同じ条件で喫煙試験を1回実施した。試験後に前記システムからたばこセグメント20Aを取出し、先端から長手方向に6mmの位置に治具を当てて一定速度で半径方向に圧縮し、治具が3.5mmの位置に達した時点の負荷(N)を求め、加熱後凝固性を評価した。負荷の値が高いほど、加熱後に刻が固着しやすいので、刻こぼれが発生しにくい。
得られたシートを幅15mm×長さ180mmに裁断し、引張強度試験機(株式会社東洋精機製作所:ストログラフE-S)を用い、ROADRANGE:25、SPEEDRANGE:50の条件で測定し、引張強度を引張応力で評価した。
前述の測定方法により求めた。
[1]乾式レーザー回折法により測定される体積基準の粒度分布における累積90%粒子径(D90)が200μm以上であるたばこ粉末を含む、非燃焼加熱型香味吸引器用たばこシート。
[2]前記たばこ粉末が、葉たばこ、中骨及び残幹からなる群から選択される少なくとも一つのたばこ原料である、[1]に記載の非燃焼加熱型香味吸引器用たばこシート。
[3]前記たばこシート100質量%に含まれる前記たばこ粉末の割合が45~95質量%である、[1]又は[2]に記載の非燃焼加熱型香味吸引器用たばこシート。
[4]前記たばこシートがさらにエアロゾル発生剤を含む、[1]から[3]のいずれかに記載の非燃焼加熱型香味吸引器用たばこシート。
[5]前記エアロゾル発生剤が、グリセリン、プロピレングリコール及び1,3-ブタンジオールからなる群から選択される少なくとも一つである、[4]に記載の非燃焼加熱型香味吸引器用たばこシート。
[6]前記たばこシート100質量%に含まれる前記エアロゾル発生剤の割合が4~50質量%である、[4]又は[5]に記載の非燃焼加熱型香味吸引器用たばこシート。
[7]前記たばこシートが成型剤をさらに含む、[1]から[6]のいずれかに記載の非燃焼加熱型香味吸引器用たばこシート。
[8]前記成型剤が、多糖類、タンパク及び合成ポリマーからなる群から選択される少なくとも一つである、[7]に記載の非燃焼加熱型香味吸引器用たばこシート。
[9]前記たばこシート100質量%に含まれる前記成型剤の割合が0.1~15質量%である、[7]又は[8]に記載の非燃焼加熱型香味吸引器用たばこシート。
[10][1]~[9]のいずれかに記載の非燃焼加熱型香味吸引器用たばこシートを含むたばこ含有セグメントを備える非燃焼加熱型香味吸引器。
[11][10]に記載の非燃焼加熱型香味吸引器と、
前記たばこ含有セグメントを加熱する加熱装置と、
を備える非燃焼加熱型香味吸引システム。
[2A] 圧力成形シートである、[1A]に記載のシート。
[3A] バインダーの配合量が、たばこシートの乾燥質量に対し、乾燥質量で6質量%以下である、[1A]または[2A]に記載のシート。
[4A] 両面の算術平均表面粗さSaが5~30μmである、[1A]に記載のたばこシート。
[5A] 5~15%の引張伸率を有する、[1A]~[4A]のいずれかに記載のシート。
[6A] [1A]~[5A]のいずれかに記載のたばこシートまたはこれに由来する材料を備える、非燃焼加熱型喫煙物品。
[7A] 少なくとも、たばこ材料と、バインダーと、媒体とを混練して混合物を調製する工程1、
前記混合物を圧展またはダイから押出してウェットシートを調製する工程2、ならびに
前記ウェットシートを乾燥する工程3、
を備える、[1A]~[5A]のいずれかに記載のシートの製造方法。
[8A] 前記工程2が、2つの基材フィルムの間にウェットシートが存在するラミネートシートを調製することを含む、[7A]に記載の製造方法。
[9A] 前記工程1が、少なくともたばこ材料、バインダー、および媒体とを、一軸または多軸混練機にて混練することを含む、[7A]または[8A]に記載の製造方法。
[10A] 前記混合物が、混合物全量に対して20~80質量%の媒体を含む、[7A]~[9A]のいずれかに記載の製造方法。
置換度が0.65以上であるセルロース誘導体と、を含む、
たばこシート。
[2B] 前記置換度が0.7以上である、[1B]に記載のシート。
[3B] 前記置換度が0.8以上である、[2B]に記載のシート。
[4B] 前記セルロース誘導体がカルボキシアルキル化セルロースである、[1B]~[3B]のいずれかに記載のシート。
[5B] 算術平均表面粗さSaが0.03mm以下である、[1B]~[4B]のいずれかに記載のシート。
[6B] 圧力成形シートである、[1B]~[5B]のいずれかに記載のシート。
[7B] 少なくとも、たばこ材料と、前記セルロース誘導体と、媒体を含む混合物を調製する工程1、
前記混合物を基材上に展開してウェットシートを調製する工程2、ならびに
前記ウェットシートを乾燥する工程3、
を備える、[1B]~[6B]のいずれかに記載のシートの製造方法。
[8B] 前記工程1が、たばこ材料と、前記セルロース誘導体と、媒体とを、一軸または多軸混練機にて混練することを含む、[7B]に記載の製造方法。
[9B] 前記工程2が、混合物を、ローラを用いて圧展する、またはダイから押出すことを含む、[7B]または[8B]に記載の製造方法。
[10B] 前記工程2が、2つの基材フィルムの間にウェットシートが存在するラミネートシートを調製することを含む、[9B]に記載の製造方法。
[11B] [1B]~[6B]のいずれかに記載のたばこシートまたはこれに由来する材料を備える、非燃焼加熱型喫煙物品。
2 たばこ含有セグメント
3 冷却セグメント
4 センターホールセグメント
5 フィルターセグメント
6 マウスピースセグメント
7 筒状部材
8 穿孔
9 第二の充填層
10 第二のインナープラグラッパー
11 アウタープラグラッパー
12 マウスピースライニングペーパー
13 加熱装置
14 ボディ
15 ヒーター
16 金属管
17 電池ユニット
18 制御ユニット
19 凹部
20A たばこ含有セグメント
21 充填物
22 ラッパー
T たばこシート
Claims (7)
- 乾式レーザー回折法により測定される体積基準の粒度分布における累積90%粒子径(D90)が200μm以上であるたばこ粉末を含む、非燃焼加熱型香味吸引器用たばこシート。
- 少なくとも1つの面の算術平均表面粗さSaが5~30μmである、請求項1に記載のシート。
- 圧力成形シートである、請求項1または2に記載のシート。
- 置換度が0.65以上であるセルロース誘導体を含む、請求項1~3のいずれか一項に記載のシート。
- 前記置換度が0.7以上である、請求項4に記載のシート。
- 請求項1~5のいずれか一項に記載の非燃焼加熱型香味吸引器用たばこシートを含むたばこ含有セグメント、
を備える非燃焼加熱型香味吸引器。 - 請求項6に記載の非燃焼加熱型香味吸引器と、
前記たばこ含有セグメントを加熱する加熱装置と、
を備える非燃焼加熱型香味吸引システム。
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US18/623,322 US20240251840A1 (en) | 2021-10-01 | 2024-04-01 | Tobacco sheet for non-combustion heating-type flavor inhaler, non-combustion heating-type flavor inhaler, and non-combustion heating-type flavor inhalation system |
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JPPCT/JP2021/036386 | 2021-10-01 | ||
JPPCT/JP2021/036387 | 2021-10-01 | ||
PCT/JP2021/036387 WO2022071562A1 (ja) | 2020-10-02 | 2021-10-01 | たばこシート |
PCT/JP2021/036386 WO2022071561A1 (ja) | 2020-10-02 | 2021-10-01 | たばこシート |
JP2021170058 | 2021-10-18 | ||
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US18/623,322 Continuation US20240251840A1 (en) | 2021-10-01 | 2024-04-01 | Tobacco sheet for non-combustion heating-type flavor inhaler, non-combustion heating-type flavor inhaler, and non-combustion heating-type flavor inhalation system |
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PCT/JP2022/036754 WO2023054688A1 (ja) | 2021-10-01 | 2022-09-30 | 非燃焼加熱型香味吸引器用たばこシート、非燃焼加熱型香味吸引器、及び非燃焼加熱型香味吸引システム |
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EP (2) | EP4410118A1 (ja) |
JP (2) | JPWO2023053633A1 (ja) |
KR (2) | KR20240067126A (ja) |
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2022
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- 2022-06-28 JP JP2023550378A patent/JPWO2023053633A1/ja active Pending
- 2022-06-28 WO PCT/JP2022/025729 patent/WO2023053633A1/ja active Application Filing
- 2022-06-28 CN CN202280065547.2A patent/CN118019460A/zh active Pending
- 2022-06-28 EP EP22875512.0A patent/EP4410118A1/en active Pending
- 2022-08-31 CN CN202280070065.6A patent/CN118139538A/zh active Pending
- 2022-09-30 CN CN202280065571.6A patent/CN118019463A/zh active Pending
- 2022-09-30 EP EP22876550.9A patent/EP4410122A1/en active Pending
- 2022-09-30 KR KR1020247014423A patent/KR20240067128A/ko active Search and Examination
- 2022-09-30 WO PCT/JP2022/036754 patent/WO2023054688A1/ja active Application Filing
- 2022-09-30 JP JP2023551910A patent/JPWO2023054688A1/ja active Pending
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2024
- 2024-03-29 US US18/621,155 patent/US20240237696A1/en active Pending
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KR20240067126A (ko) | 2024-05-16 |
CN118139538A (zh) | 2024-06-04 |
US20240251840A1 (en) | 2024-08-01 |
CN118019463A (zh) | 2024-05-10 |
EP4410118A1 (en) | 2024-08-07 |
JPWO2023054688A1 (ja) | 2023-04-06 |
KR20240067128A (ko) | 2024-05-16 |
EP4410122A1 (en) | 2024-08-07 |
JPWO2023053633A1 (ja) | 2023-04-06 |
US20240237696A1 (en) | 2024-07-18 |
WO2023053633A1 (ja) | 2023-04-06 |
CN118019460A (zh) | 2024-05-10 |
CN117597034A (zh) | 2024-02-23 |
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