WO2021085532A1 - 非燃焼加熱式たばこ用のたばこ充填物、非燃焼加熱式たばこ及び電気加熱式たばこ製品 - Google Patents
非燃焼加熱式たばこ用のたばこ充填物、非燃焼加熱式たばこ及び電気加熱式たばこ製品 Download PDFInfo
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- WO2021085532A1 WO2021085532A1 PCT/JP2020/040634 JP2020040634W WO2021085532A1 WO 2021085532 A1 WO2021085532 A1 WO 2021085532A1 JP 2020040634 W JP2020040634 W JP 2020040634W WO 2021085532 A1 WO2021085532 A1 WO 2021085532A1
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- tobacco
- aerosol
- filling
- combustion
- burn
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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
- A24B15/12—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
- A24B13/00—Tobacco for pipes, for cigars, e.g. cigar inserts, or for cigarettes; Chewing tobacco; Snuff
- A24B13/02—Flakes or shreds of tobacco
-
- A—HUMAN NECESSITIES
- A24—TOBACCO; CIGARS; CIGARETTES; SIMULATED SMOKING DEVICES; SMOKERS' REQUISITES
- A24B—MANUFACTURE OR PREPARATION OF TOBACCO FOR SMOKING OR CHEWING; TOBACCO; SNUFF
- A24B15/00—Chemical features or treatment of tobacco; Tobacco substitutes, e.g. in liquid form
- A24B15/10—Chemical features of tobacco products or tobacco substitutes
- A24B15/12—Chemical features of tobacco products or tobacco substitutes of reconstituted tobacco
-
- A—HUMAN NECESSITIES
- A24—TOBACCO; CIGARS; CIGARETTES; SIMULATED SMOKING DEVICES; SMOKERS' REQUISITES
- A24B—MANUFACTURE OR PREPARATION OF TOBACCO FOR SMOKING OR CHEWING; TOBACCO; SNUFF
- A24B15/00—Chemical features or treatment of tobacco; Tobacco substitutes, e.g. in liquid form
- A24B15/18—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
- A24B15/32—Treatment of tobacco products or tobacco substitutes by chemical substances by organic substances by acyclic compounds
-
- 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
- A24D—CIGARS; CIGARETTES; TOBACCO SMOKE FILTERS; MOUTHPIECES FOR CIGARS OR CIGARETTES; MANUFACTURE OF TOBACCO SMOKE FILTERS OR MOUTHPIECES
- A24D1/00—Cigars; Cigarettes
- A24D1/04—Cigars; Cigarettes with mouthpieces or filter-tips
- A24D1/042—Cigars; Cigarettes with mouthpieces or filter-tips with mouthpieces
-
- 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
- A24D—CIGARS; CIGARETTES; TOBACCO SMOKE FILTERS; MOUTHPIECES FOR CIGARS OR CIGARETTES; MANUFACTURE OF TOBACCO SMOKE FILTERS OR MOUTHPIECES
- A24D3/00—Tobacco smoke filters, e.g. filter-tips, filtering inserts; Filters specially adapted for simulated smoking devices; Mouthpieces for cigars or cigarettes
- A24D3/02—Manufacture of tobacco smoke filters
- A24D3/0275—Manufacture of tobacco smoke filters for filters with special features
- A24D3/0279—Manufacture of tobacco smoke filters for filters with special features with tubes
-
- 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
- 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
- A24F40/465—Shape or structure of electric heating means specially adapted for induction heating
-
- 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
- A24F40/50—Control or monitoring
-
- H—ELECTRICITY
- H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
- H05B—ELECTRIC HEATING; ELECTRIC LIGHT SOURCES NOT OTHERWISE PROVIDED FOR; CIRCUIT ARRANGEMENTS FOR ELECTRIC LIGHT SOURCES, IN GENERAL
- H05B6/00—Heating by electric, magnetic or electromagnetic fields
- H05B6/02—Induction heating
- H05B6/06—Control, e.g. of temperature, of power
-
- H—ELECTRICITY
- H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
- H05B—ELECTRIC HEATING; ELECTRIC LIGHT SOURCES NOT OTHERWISE PROVIDED FOR; CIRCUIT ARRANGEMENTS FOR ELECTRIC LIGHT SOURCES, IN GENERAL
- H05B6/00—Heating by electric, magnetic or electromagnetic fields
- H05B6/02—Induction heating
- H05B6/10—Induction heating apparatus, other than furnaces, for specific applications
- H05B6/105—Induction heating apparatus, other than furnaces, for specific applications using a susceptor
-
- H—ELECTRICITY
- H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
- H05B—ELECTRIC HEATING; ELECTRIC LIGHT SOURCES NOT OTHERWISE PROVIDED FOR; CIRCUIT ARRANGEMENTS FOR ELECTRIC LIGHT SOURCES, IN GENERAL
- H05B6/00—Heating by electric, magnetic or electromagnetic fields
- H05B6/02—Induction heating
- H05B6/10—Induction heating apparatus, other than furnaces, for specific applications
- H05B6/105—Induction heating apparatus, other than furnaces, for specific applications using a susceptor
- H05B6/108—Induction heating apparatus, other than furnaces, for specific applications using a susceptor for heating a fluid
-
- A—HUMAN NECESSITIES
- A24—TOBACCO; CIGARS; CIGARETTES; SIMULATED SMOKING DEVICES; SMOKERS' REQUISITES
- A24F—SMOKERS' REQUISITES; MATCH BOXES; SIMULATED SMOKING DEVICES
- A24F40/00—Electrically operated smoking devices; Component parts thereof; Manufacture thereof; Maintenance or testing thereof; Charging means specially adapted therefor
- A24F40/20—Devices using solid inhalable precursors
-
- A—HUMAN NECESSITIES
- A24—TOBACCO; CIGARS; CIGARETTES; SIMULATED SMOKING DEVICES; SMOKERS' REQUISITES
- A24F—SMOKERS' REQUISITES; MATCH BOXES; SIMULATED SMOKING DEVICES
- A24F47/00—Smokers' requisites not otherwise provided for
Definitions
- the present invention relates to a tobacco filler for non-combustion heat-not-burn tobacco, a non-combustion heat-not-burn tobacco product, and an electrically heated tobacco product.
- Patent Document 1 states that by adding an acid having a primary acid dissociation constant and a boiling point within a specific range to a tobacco filling, formation of a salt with a flavor component contained in the tobacco filling is suppressed. Furthermore, it is described that the chemical odor is suppressed.
- the invention described in Patent Document 1 utilizes an acid-base reaction.
- the flavor component contained in the tobacco filling volatilizes together with the aerosol-forming substrate when the electrically heated tobacco product is used, the flavor component is incorporated into the cooled and condensed aerosol particles. Therefore, in order for the flavor components to be stably delivered to the user's oral cavity, it is important that the generated aerosol particles exist stably without volatilizing until they are delivered to the user's oral cavity.
- the composition of the components on the surface of the aerosol particles greatly contributes to the physical properties of the aerosol particles, and it is considered that coating the surface of the aerosol particles with a non-volatile component is effective for stabilizing the aerosol particles. Since the generated aerosol particles do not volatilize and exist stably until they are delivered to the oral cavity, they are locally present on the surface of the aerosol particles composed of hydrophilic substances such as water and glycerin. It has been found that certain fatty acids can be added to the aerosol filling.
- an aerosol stabilizer containing saturated fatty acids has been added to the tobacco filling for non-combustion heat-not-burn tobacco, which contains a tobacco material and an aerosol-forming substrate. It has been found that the above-mentioned problems can be solved when the proportion of saturated fatty acids having 16 to 18 carbon atoms in the lipid contained in the aerosol stabilizer is 50% by weight or more.
- the present invention is as follows.
- Tobacco filling [5] The tobacco filling for non-combustion heating type tobacco according to any one of [1] to [4], wherein the tobacco filling is a molded product of a tobacco material composed of tobacco chopped.
- An electrically heated device including a heater member, a battery unit serving as a power source for the heater member, and a control unit for controlling the heater member is inserted so as to come into contact with the heater member. Consists of the non-combustion heating type tobacco according to any one of [10] to [12].
- the electric heating type device including an inductor, a battery unit for supplying electric power to the inductor, and a control unit for controlling the electric power supply, and an electrically heated device inserted close to the inductor, according to [13].
- Consists of non-combustion heating type tobacco An electric heating type tobacco product in which the tobacco rod part of a non-combustion heating type tobacco is heated to 250 to 400 ° C.
- Tobacco filling including a step of adding an aerosol stabilizer containing a lipid and having a saturated fatty acid having 16 to 18 carbon atoms in the lipid in an amount of 50% by weight or more to the tobacco material before or after molding. Manufacturing method of things.
- the present invention it is possible to provide a user with a tobacco filling for non-combustion heating type tobacco, which can efficiently deliver the flavor component contained in the tobacco filling.
- non-combustion heat-not-burn tobacco is a tobacco that can deliver the flavor component contained in the tobacco material to the user's oral cavity by heating without combustion, unlike the conventional cigarette.
- tobacco raw material is, for example, a tobacco leaf lamina, a middle bone, a stem, etc., which is not used as it is as a tobacco filling material.
- the "tobacco material” is a material that constitutes a tobacco filling, and uses "tobacco raw materials” such as “tobacco sheet”, “tobacco granule”, “tobacco chopped”, and “tobacco fine powder” described later. It is an article manufactured by
- the tobacco filling for non-combustion heat-not-burn tobacco contains a tobacco material and an aerosol-producing base material, and the tobacco filling is added with an aerosol stabilizer containing a fat.
- the proportion of saturated fatty acids having 16 to 18 carbon atoms in the lipid contained in the aerosol stabilizer is 50% by weight or more.
- the problem of the present invention can be solved by containing saturated fatty acids having 16 to 18 carbon atoms in that proportion.
- the proportion of saturated fatty acids having 16 to 18 carbon atoms in the lipid is more preferably 80% by weight or more, further preferably 90% by weight or more, and particularly preferably 99% by weight or more.
- lipids other than saturated fatty acids having 16 to 18 carbon atoms there are no particular restrictions on lipids other than saturated fatty acids having 16 to 18 carbon atoms. However, it is preferable that lipids other than saturated fatty acids having 16 to 18 carbon atoms are not contained as much as possible.
- the solubility of saturated fatty acids having 16 to 18 carbon atoms in water and glycerin, which mainly form aerosols, is extremely low, and it is considered that the solubility of saturated fatty acids affects the coating of aerosol particles. However, when a predetermined amount or more of highly soluble lipid is mixed, the original coating effect of saturated fatty acid having 16 to 18 carbon atoms may not be sufficiently exhibited.
- the solubility of individual lipids and, in the case of a mixture of multiple lipids, the proportion of low-solubility lipids to high-lipids is important as an index for predicting the effect.
- the term "aerosol stabilizer" as used herein is intended to maintain the stability of aerosol particles generated from non-combustion heat-not-burn tobacco in air, and contains a specific lipid as described above. is there.
- the aerosol stabilizer containing the saturated fatty acid may contain other components in addition to the lipid, but the content of the lipid in the aerosol stabilizer is preferably 90% by weight or more, preferably 95% by weight or more. Is more preferable, and 99% by weight or more is particularly preferable.
- the solubility of lipid in glycerin is 0.13 mg / g or less, preferably 0.12 mg / g or less, more preferably 0.11 mg / g, while 0.01 mg / g or more can be mentioned.
- the "solubility in glycerin" is determined as follows.
- the best solubility of glycerin is the method of quantifying the fatty acid dissolved in 2 g of glycerin. Specifically, after adding an excessive amount of fatty acid to glycerin, two-layer separation is performed by allowing it to stand at room temperature for 24 hours or more or by centrifugation, etc., and 100 mg of glycerin is separated and transferred to 2 mL of methanol. The amount of fatty acids dissolved in glycerin is quantified by Gas Chromatograph --Flame Ionized Detector (GC-FID) or Gas Chromatograph --Mass Spectrometer (GC-MS).
- GC-FID Gas Chromatograph --Flame Ionized Detector
- GC-MS Gas Chromatograph --Mass Spectrometer
- saturated fatty acid having 16 to 18 carbon atoms examples include palmitic acid, margaric acid and stearic acid, and among these, palmitic acid, stearic acid and a mixture thereof can be preferably mentioned.
- the saturated fatty acid having 16 to 18 carbon atoms a mixture may be used, or one containing each saturated fatty acid alone may be used.
- a lipid containing only saturated fatty acids having 16 to 18 carbon atoms and further containing only saturated fatty acids having 16 to 18 carbon atoms can be used as an aerosol stabilizer.
- the amount of the aerosol stabilizer added to the tobacco filling can be 0.1% by weight or more, 5.0% by weight or less, and 0.5% by weight or more, based on the dry weight of the total amount of the tobacco filling. It is more preferably 2.0% by weight or less, more preferably 0.5% by weight or more and 1.5% by weight or less, and more preferably 0.75% by weight or more and 1.25% by weight or less. Especially preferable. With such an addition amount, the aerosol generated during use can be stably present, and the aerosol physical characteristics having stability close to that of cigarettes make the flavor and taste similar to cigarettes.
- the amount of the saturated fatty acid having 16 to 18 carbon atoms added to the tobacco filling is preferably 0.1% by weight or more and 2.0% by weight or less, preferably 0.5% by weight, based on the dry weight of the total amount of the tobacco filling. It is more preferably 0.75% by weight or more and 1.5% by weight or less, and particularly preferably 0.75% by weight or more and 1.25% by weight or less.
- the amount of the aerosol stabilizer added and the amount of the saturated fatty acid having 16 to 18 carbon atoms may be in the same range because the aerosol stabilizer is composed of lipids, and all of the lipids have 16 to 18 carbon atoms. Indicates that it may be a saturated fatty acid.
- a molded body (hereinafter, also referred to as a first tobacco filling material) composed of a tobacco material containing tobacco nicks and a description thereof will be described later.
- a molded product of a tobacco material composed of a tobacco sheet (hereinafter, also referred to as a second tobacco filling) and a product composed of granules prepared using a tobacco raw material (hereinafter, also referred to as a third tobacco filling). )
- a molded bodies rod-shaped ones can be mentioned.
- the direction h in FIG. 1 is the longitudinal direction.
- the longitudinal direction of the non-combustion heat-not-burn tobacco may be regarded as the same as the longitudinal direction of the tobacco rod.
- the longitudinal direction is defined as the direction indicated by h. Therefore, even when w ⁇ h, the direction indicated by h is referred to as the longitudinal direction for convenience.
- the shape of the bottom surface is not limited and may be a polygon, a polygon with rounded corners, a circle, an ellipse, etc., and the width w is a diameter when the bottom surface is circular, a major axis when the bottom surface is elliptical, a polygonal shape, or a polygon with rounded corners. In some cases, it is the diameter of the circumscribed circle or the major axis of the circumscribed ellipse. For example, in the embodiment shown in FIG.
- the bottom surface is a circle, its diameter can be recognized.
- the diameter is the width w
- the length orthogonal to the width is the height h.
- the height h of the tobacco filling material constituting the tobacco rod is preferably 12 mm or more and 70 mm or less
- the width w is preferably 4 mm or more and 9 mm or less.
- the tobacco material constituting the first filling is not particularly limited, and a known tobacco raw material such as lamina or middle bone that has been subjected to a treatment such as cutting or crushing can be used. Further, dried tobacco leaves are crushed and homogenized so that the average particle size is about 20 ⁇ m or more and 200 ⁇ m or less, and the sheet is processed (hereinafter, also simply referred to as a homogenized sheet). May be good.
- the width of the tobacco engraving is preferably 0.5 mm or more and 2.0 mm or less for molding as a tobacco rod.
- the content of the tobacco filler in the molded tobacco rod may be 200 mg / rod or more and 800 mg / rod or less in the case of a tobacco rod having a circumference of 22 mm and a length of 20 mm, and may be 250 mg / rod or more and 600 mg / rod.
- the following is preferable.
- the tobacco leaves used for producing the tobacco chopped and homogenized sheets various types of tobacco can be used. For example, yellow varieties, Burley varieties, Orient varieties, native varieties, other Nicotiana-Tabacam varieties, Nicotiana rustica varieties, and mixtures thereof can be mentioned. As for the mixture, each of the above varieties can be appropriately blended and used so as to obtain the desired taste.
- the first is a method of producing a papermaking sheet using a papermaking process.
- the second is to mix an appropriate solvent such as water with crushed tobacco leaves to homogenize, then cast the homogenized product thinly on a metal plate or metal plate belt, dry it, and cast sheet (slurry sheet).
- the third method is to prepare a rolled sheet by mixing an appropriate solvent such as water with crushed tobacco leaves and extruding the homogenized one into a sheet. Details of the types of the homogenized sheet are disclosed in "Tobacco Encyclopedia, Tobacco Academic Studies Center, 2009.3.31".
- the water content of the tobacco filling can be 10% by weight or more and 15% by weight or less, preferably 11% by weight or more and 13% by weight or less, based on the total amount of the tobacco filling. With such a water content, the occurrence of winding stains is suppressed, and the hoisting suitability at the time of manufacturing the tobacco rod is improved.
- the size of the tobacco nicks contained in the first tobacco filling and the method for preparing the nicks For example, dried tobacco leaves may be chopped to a width of 0.5 mm or more and 2.0 mm or less.
- a crushed product of a homogenized sheet When a crushed product of a homogenized sheet is used, dried tobacco leaves are crushed so that the average particle size is about 20 ⁇ m or more and 200 ⁇ m or less, and the homogenized product is processed into a sheet, and the width is 0.5 mm or more. , 2.0 mm or less may be used.
- the first tobacco filling comprises an aerosol-producing substrate that produces an aerosol.
- the type of the aerosol-forming base material is not particularly limited, and extracts from various natural products and / or their constituents can be selected depending on the intended use.
- the aerosol-forming substrate include glycerin, propylene glycol, triacetin, 1,3-butanediol, and mixtures thereof.
- the content of the aerosol-producing base material in the first tobacco filling is not particularly limited, and is usually 5 weights based on the total amount of the tobacco filling from the viewpoint of sufficiently producing aerosols and imparting a good taste. % Or more, preferably 10% by weight or more, and usually 50% by weight or less, preferably 15% by weight or more and 25% by weight or less.
- the first tobacco filling may contain a fragrance.
- the type of the fragrance is not particularly limited, and from the viewpoint of imparting a good taste, acetoanisol, acetophenone, acetylpyrazine, 2-acetylthiazole, alfalfa extract, amyl alcohol, amyl butyrate, trans-annel, staranis oil.
- Apple juice Peruvian balsam oil, Mitsurou absolute, benzaldehyde, benzoin resinoid, benzyl alcohol, benzyl benzoate, benzyl phenylacetate, benzyl propionate, 2,3-butandione, 2-butanol, butyl butyrate, butyric acid, caramel, cardamon oil , Carob absolute, ⁇ -carotene, carrot juice, L-carboxylic, ⁇ -cariophyllene, cassia bark oil, cedar wood oil, celery seed oil, camomil oil, cinnamaldehyde, silicic acid, cinnamyl alcohol, cinnamyl silicate, citronella Oil, DL-Citronellol, Clarisage Extract, Cocoa, Coffee, Cognac Oil, Coriander Oil, Cuminaldehyde, Davana Oil, ⁇ -Decalactone, ⁇ -Decalactone, Decanoic Acid, D
- the content of the flavor in the first tobacco filling is not particularly limited, and is usually 10,000 ppm or more, preferably 20,000 ppm or more, more preferably 25,000 ppm or more, and from the viewpoint of imparting a good taste. , Usually 50,000 ppm or less, preferably 40,000 ppm or less, and more preferably 33,000 ppm or less.
- the filling density in the first tobacco filling is not particularly limited, but is usually 250 mg / cm 3 or more, preferably 320 mg / cm from the viewpoint of ensuring the performance of non-combustion heat-not-burn tobacco and imparting a good taste. It is 3 or more, and usually 800 mg / cm 3 or less, preferably 600 mg / cm 3 or less.
- the first tobacco filling described above is wrapped with rolling paper so that it is on the inside to form a tobacco rod.
- the tobacco materials constituting the filling may be randomly arranged, or may be a strand type arranged along the longitudinal direction of the tobacco rod.
- the second tobacco filling is composed of one or more tobacco sheets, and in the case of two or more sheets, they are arranged concentrically.
- the concentric arrangement means that the centers of all the tobacco sheets are arranged at substantially the same position.
- the sheet refers to a shape having a pair of substantially parallel main surfaces and side surfaces.
- the sheet is preferably manufactured by papermaking.
- one tobacco sheet is wound around in a direction orthogonal to the longitudinal direction of the non-combustion heat-not-burn tobacco to form a molded body, and a plurality of tobacco sheets are wound concentrically to form a molded body. Examples of what constitutes a body can be illustrated.
- the sheet base material include tobacco materials such as tobacco powder.
- a tobacco material is preferable as the sheet base material.
- the base sheet of the tobacco material is a tobacco sheet in which a component capable of generating a flavor is supported, if necessary.
- Tobacco sheets produce aerosols as they heat.
- An aerosol source such as a polyol such as glycerin, propylene glycol, or 1,3-butanediol is added as an aerosol-forming base material.
- the amount of the aerosol-forming base material added is preferably 5% by weight or more and 50% by weight or less, more preferably 15% by weight or more and 25% by weight or less, based on the dry weight of the tobacco sheet.
- a tobacco sheet as a material before being formed as a molded body will be described.
- the tobacco sheet can be appropriately produced by a known method such as papermaking, slurry, rolling, or the like.
- the homogenizing sheet described in the first tobacco filling can also be used.
- papermaking it can be produced by a method including the following steps. 1) Dried tobacco leaves are coarsely crushed, extracted with water and separated into a water extract and a residue. 2) The water extract is dried under reduced pressure and concentrated. 3) Pulp is added to the residue, fiberized with a refiner, and then papermaking is performed. 4) A concentrated solution of water extract is added to the paper-made sheet and dried to obtain a tobacco sheet.
- a step of removing a part of components such as nitrosamine may be added (see Japanese Patent Application Laid-Open No. 2004-510422).
- the slurry method it can be produced by a method including the following steps. 1) Mix water, pulp and binder with crushed tobacco leaves. 2) The mixture is thinly spread (cast) and dried. In this case, a step of removing some components such as nitrosamines by irradiating the slurry in which water, pulp and a binder and crushed tobacco leaves are mixed with ultraviolet rays or X-rays may be added.
- a non-woven tobacco sheet produced by a method including the following steps can also be used.
- the composition of the tobacco sheet is not particularly limited, but for example, the content of the tobacco raw material (tobacco leaf) is preferably 50% by weight or more and 95% by weight or less based on the total weight of the tobacco sheet.
- the tobacco sheet may contain a binder, and examples of the binder include guar gum, xanthan gum, CMC (carboxymethyl cellulose), and CMC-Na (sodium salt of carboxymethyl cellulose).
- the amount of the binder is preferably 1% by weight or more and 20% by weight or less with respect to the total weight of the tobacco sheet.
- the tobacco sheet may further contain other additives. Examples of the additive include a filler such as pulp. Although a plurality of tobacco sheets are used in the present invention, all of the tobacco sheets may have the same composition or physical properties, or some or all of the tobacco sheets may have different compositions or physical properties.
- the second tobacco filling When the second tobacco filling is composed of one tobacco sheet, the second tobacco filling can be produced by passing the tobacco sheet through a winding tube and winding it in a superposed manner.
- the second tobacco filling When the second tobacco filling is composed of a plurality of tobacco sheets, a plurality of tobacco sheets having different widths are prepared, and a laminated body is prepared in which the width decreases from the bottom to the top. It can be manufactured by passing it through a winding tube and winding it.
- one or a plurality of tobacco sheets extend in the longitudinal direction and are arranged concentrically about the longitudinal axis. Further, a through hole extending in the longitudinal direction is formed as the opening between the longitudinal axis and the innermost layer of the tobacco sheet.
- the non-contact portion is formed between adjacent tobacco sheets after the winding molding.
- the flavor flow path can be secured and the delivery efficiency of the flavor component can be improved.
- the heat from the heater can be transferred to the outer tobacco sheet through the contact portion of the tobacco sheet, high heat transfer efficiency can be ensured.
- the entire surfaces of the adjacent tobacco sheets are laminated without being adhered to each other.
- a laminated body (molded body) by bonding a part of adjacent tobacco sheets and laminating them, or by lightly adhering and laminating the entire surface or a part of adjacent tobacco sheets so as to be peeled off after winding molding. )
- the above-mentioned wrapping paper may be arranged at the bottom of the laminated body (molded body).
- an opening can be formed by placing a tubular dummy such as a mandrel on the top of the laminated body (molded body) to form a second tobacco filling and then removing the dummy. ..
- the thickness of each tobacco sheet is not limited, but is preferably 200 ⁇ m or more and 600 ⁇ m or less in view of the balance between heat transfer efficiency and strength.
- the thickness of each tobacco sheet may be the same or different.
- the number of tobacco sheets constituting the second tobacco filling is not particularly limited as long as it is one or more, and examples thereof include one, two, three, four, five, or six.
- the third tobacco filling is composed of tobacco granules.
- the raw material of the third tobacco filling is not particularly limited, but at least one pH adjuster selected from the group consisting of (a) tobacco material, (b) water content, (c) potassium carbonate and sodium hydrogen carbonate. ,, (D) At least one binder selected from the group consisting of pullulan and hydroxypropyl cellulose, and (e) aerosol-forming substrate.
- the tobacco material (component (a)) contained in the third tobacco filling includes crushed tobacco leaves, crushed tobacco sheet, and the like. Tobacco varieties include Burley, Yellow and Oriental varieties. The tobacco material is preferably pulverized to a size of 200 ⁇ m or more and 300 ⁇ m or less. The raw material mixture of the third tobacco filling usually contains the tobacco material in an amount of 20% by weight or more and 80% by weight or less.
- the water content (component (b)) contained in the third tobacco filling is for maintaining the integrity of the tobacco granules.
- the raw material mixture of the third tobacco filling usually contains water in an amount of 3% by weight or more and 13% by weight or less.
- the third tobacco filling may contain water in an amount such that the value of dry weight loss is usually 5% by weight or more and 17% by weight or less. Dry weight loss is when a part of a sample is taken for measurement and the sample is completely dried by evaporating the total water content in the collected sample (for example, at a constant temperature (105 ° C.) for 15 minutes.
- the pH adjuster (component (c)) contained in the third tobacco filling comprises potassium carbonate, sodium hydrogen carbonate or a mixture thereof. These pH adjusters adjust the pH of the third tobacco filling to the alkaline side, thereby promoting the release of the flavor component contained in the third tobacco filling from the tobacco granules, and satisfy the user. Brings the taste you get.
- the raw material mixture of the third tobacco filler may usually contain a pH adjuster in an amount of 5% by weight or more and 20% by weight or less.
- the binder (component (d)) contained in the third tobacco filling is for binding the tobacco granule components to maintain the integrity of the tobacco granules.
- the binder is composed of pullulan, hydroxypropyl cellulose (HPC) or a mixture thereof.
- the raw material mixture of the third tobacco filling can usually contain the binder in an amount of 0.5% by weight or more and 15% by weight or less.
- the aerosol-forming substrate (component (e)) contained in the third tobacco filling is for producing an aerosol.
- the aerosol-forming substrate is composed of a polyhydric alcohol, which may include glycerin, propylene glycol, sorbitol, xylitol and erythritol. These polyhydric alcohols can be used alone or in combination of two or more.
- the content of the aerosol-forming base material in the raw material mixture of the third tobacco filling can be 5% by weight or more and 15% by weight or less.
- a flavoring material (solid or liquid) other than the flavoring component can be mentioned.
- Such flavoring materials include sugar (sucrose, fructose, etc.), cocoa powder, carob powder, coriander powder, licorice powder, orange peel powder, rose pip powder, chamomile flower powder, lemon verbena powder, peppermint powder, leaf powder. , Spearmint powder, black tea powder, menthol, etc. are included.
- the raw material mixture of the third tobacco filling can usually contain the above flavoring material in an amount of 0.5% by weight or more and 30% by weight or less.
- the flavoring material may be added to the ingredients by directly kneading the ingredients (a), (b), (c), (d) and (e), or a known clathrate such as cyclodextrin.
- the raw material mixture of the third tobacco filling contains the component (a). , Usually, it can be contained in an amount of about 33% by weight or more (about 90% by weight or less).
- the third tobacco filling is obtained by mixing the components (a), (c), (d) and (e), and optionally the component (f), adding the component (b) to the mixture and kneading. It is obtained by granulating (long columnar) the kneaded product with a wet extrusion granulator and then sizing it into short columns or spheres.
- the average particle size (D50) of the obtained tobacco granules is usually 0.2 mm or more and 1.2 mm or less, preferably 0.2 mm or more and 1.0 mm or less, and 0.2 mm or more and 0.8 mm or less. The following is more preferable.
- extrusion granulation it is preferable to extrude the kneaded product at an ambient temperature at a pressure of 2 kN or more.
- the temperature of the kneaded product at the outlet of the extruder and granulator rises momentarily from the ambient temperature to, for example, 90 ° C. or higher and 100 ° C. or lower, and the water content and volatile components are 2% by weight or more. Evaporates to 4% by weight or less. Therefore, the water to be blended to make the kneaded product can be used in an amount larger than the desired water content in the final product, the tobacco granules, by the amount of evaporation.
- Tobacco granules obtained by extrusion granulation may be further dried if necessary for moisture adjustment.
- the dry weight loss of tobacco granules obtained by extrusion granulation is measured, and if it is higher than the desired dry weight loss (eg, 5% by weight or more, 17% by weight or less), the tobacco is obtained to obtain the desired dry weight loss.
- the granules may be further dried.
- the drying conditions (temperature and time) for obtaining the desired drying weight loss shall be set in advance based on the drying conditions (temperature and time) required to reduce the drying weight loss by a predetermined value. Can be done.
- the third tobacco filling can consist only of the above tobacco granules, but can also include additional tobacco materials.
- Additional tobacco material is usually tobacco leaf chopped or finely ground.
- the additional tobacco material can be used in admixture with the tobacco granules according to the embodiments of the present invention.
- the method for producing a tobacco filling according to an embodiment of the present invention relates to the method for producing a first to third tobacco filling described above.
- all of the first to third tobacco fillers contain a lipid, and the ratio of saturated fatty acids having 16 to 18 carbon atoms in the lipid is 50 weight by weight.
- the step of adding an aerosol stabilizer in an amount of% or more to the tobacco material before or after molding is included. When the aerosol stabilizer is added to the tobacco material before molding, the aerosol stabilizer can be uniformly added to the tobacco material depending on the mode of addition.
- the above aerosol stabilizer is mixed with other materials such as crushed tobacco leaves, chopped tobacco, and crushed sheet tobacco during the preparation of the tobacco filling. Aerosol stabilizer can be uniformly added to the tobacco material before molding.
- the above aerosol stabilizer is added to the tobacco material by mixing the above aerosol stabilizer with the raw material tobacco material (crushed tobacco leaves, etc.) at the time of preparing the tobacco sheet. Can be done.
- the above aerosol stabilizer is mixed with the concentrated solution of the water extract in the step 4) and added to the papermaking sheet to obtain the above aerosol stabilizer. Can be added to the tobacco material before molding.
- the above aerosol stabilizer in addition to water, pulp, a binder and crushed tobacco leaves, the above aerosol stabilizer can be uniformly added to the tobacco material before molding.
- the above aerosol stabilizer in the case of obtaining the non-woven tobacco sheet described above, in the step 1), when the powdery granular tobacco leaves and the binder are mixed, the above aerosol stabilizer is also mixed to stabilize the above aerosol.
- the agent can be uniformly added to the tobacco material before molding. It is preferable to uniformly add the above aerosol stabilizer to the tobacco material before molding because the flavor and taste are stabilized.
- the aerosol stabilizer When the aerosol stabilizer is added to the molded tobacco material, the aerosol stabilizer can be added to the surface of the tobacco material. As a method thereof, an aerosol stabilizer may be sprayed or applied to the surface of a molded product of a tobacco material by an appropriate means. Since the aerosol stabilizer is added to the surface of the tobacco material, the aerosol stabilizer can be transferred into the aerosol without considering the internal diffusion in the tobacco material, and the transfer rate is increased, which is preferable. In the case of the first tobacco filling, the aerosol stabilizer can be added to the surface of the rod-shaped tobacco material (granule in the case of the third tobacco filling) by the above method. In the case of the second tobacco filling, the aerosol stabilizer can be added to the surface of the rod-shaped tobacco material formed by rolling up one or more tobacco sheets by the above method.
- the tobacco filling according to the following aspect (1) or (2) can be produced.
- (1) The tobacco filling of any of the above-mentioned (1) or (2) is added to the surface of the molded product of the tobacco material, and (2) is uniformly added to the tobacco material.
- By further winding the molded product with rolling paper it can be used for non-combustion heat-not-burn tobacco.
- a tobacco rod to be used for non-combustion heating type tobacco can be produced.
- a known winding device can be used for winding.
- the composition of the wrapping paper is not particularly limited, and a general one can be used.
- cellulose fiber paper can be used, and more specifically, hemp or wood or a mixture thereof can be mentioned.
- the term "rolling paper” as used herein is for wrapping a tobacco filling material.
- the wrapping paper may contain a filler, and the type of filler is not limited, such as metal carbonates such as calcium carbonate and magnesium carbonate, metal oxides such as titanium oxide and aluminum oxide, barium sulfate, calcium sulfate and the like.
- Examples include metal sulfates, metal sulfides such as zinc sulfide, quartz, kaolin, talc, keiso soil, gypsum, etc., and in particular, calcium carbonate is contained from the viewpoint of improving whiteness / opacity and increasing the heating rate. Is preferable.
- the blending ratio of the filler in the wrapping paper is not particularly limited, and is usually 1% by weight or more and 50% by weight or less, preferably 5% by weight or more and 45% by weight or less, and 10% by weight or more. It is more preferably 42% by weight or less, and particularly preferably 20% by weight or more and 40% by weight or less.
- the content of calcium carbonate when it is determined, it can be determined by measuring the ash content or by quantifying calcium ions after extraction. If it is below the lower limit of the above range, the rolling paper is likely to be burnt, and if it exceeds the upper limit, the strength of the rolling paper is greatly reduced, and the winding property may be deteriorated.
- Water resistance improvers include wet paper strength enhancers (WS agents) and sizing agents.
- wet paper strength enhancer include urea formaldehyde resin, melamine formaldehyde resin, and polyamide epichlorohydrin (PAE).
- PAE polyamide epichlorohydrin
- sizing agents include rosin soap, alkyl ketene dimer (AKD), alkenyl succinic anhydride (ASA), and highly saponified polyvinyl alcohol having a saponification degree of 90% or more.
- a paper strength enhancer may be added, and examples thereof include polyacrylamide, cationic starch, oxidized starch, CMC, polyamide epichlorohydrin resin, and polyvinyl alcohol.
- polyacrylamide cationic starch
- oxidized starch CMC
- polyamide epichlorohydrin resin polyvinyl alcohol.
- the air permeability of oxidized starch is improved by using a very small amount (Japanese Patent Laid-Open No. 2017-218669).
- the rolling paper may be appropriately coated.
- a coating agent may be added to at least one of the two front and back surfaces of the wrapping paper.
- the coating agent is not particularly limited, but a coating agent capable of forming a film on the surface of the paper and reducing the permeability of the liquid is preferable.
- alginic acid and salts thereof eg sodium salts
- polysaccharides such as pectin, ethyl cellulose, methyl cellulose, carboxymethyl cellulose, cellulose derivatives such as nitrocellulose, starch and derivatives thereof (eg carboxymethyl starch, hydroxyalkyl starch and cationic starch).
- Such ether derivatives, ester derivatives such as starch acetate, starch phosphate and starch octenyl succinate) can be mentioned.
- the basis weight of the wrapping paper is usually 20 g / m 2 or more and 45 g / m 2 or less, and preferably 20 g / m 2 or more and 45 g / m 2 or less. Within this range, appropriate strength and hoistability can be maintained.
- the air permeability of the wrapping paper is usually 0 cholesterol unit or more and 120 cholesterol unit or less, preferably 5 cholesterol unit or more and 100 cholesterol unit or less, and more preferably 10 cholesterol unit or more and 80 cholesterol unit or less. Within this range, appropriate strength and taste can be maintained.
- Non-combustion heating type tobacco As one embodiment of the non-combustion heat-not-burn tobacco according to the embodiment of the present invention, for example, the one having the configuration of FIG. 1 can be mentioned.
- the non-combustion-heated tobacco 1 of FIG. 1 has a tobacco rod composed of a tobacco filling 10 and a wrapping paper (not shown) for wrapping the tobacco filling 10, and an end portion opposite to the tobacco rod. It has a constituent mouthpiece portion 11, and the tobacco rod and the mouthpiece portion are connected by using the same or different rolling paper 12 (chip paper in FIG. 1) as or different from the rolling paper for wrapping the tobacco filling. There is.
- the embodiment of FIG. 1 uses the above-mentioned first tobacco filling as the tobacco filling.
- the length of the chopped tobacco (chopped tobacco leaf or chopped homogenized sheet: for example, width of 0.5 mm or more and 2.0 mm or less) contained in the first tobacco filling is 1.0 mm or more. It is often about 4.0 mm or less, and these notches are often arranged in a random orientation in the tobacco filling.
- the mouthpiece unit 11 may include an aerosol cooling unit (also simply referred to as a cooling unit) 13 and a filter unit 14. Further, a chip paper 12 is provided as a wrapping paper for connecting these.
- the mouthpiece portion 11 is composed of two segments in FIG. 1, the mouthpiece portion 11 may be composed of a single segment, may be composed of three segments, or may be composed of four. It may be composed of the above segments. Further, the segment constituting the mouthpiece portion may be configured to include both the cooling portion and the filter portion as shown in FIG. 1, or may be configured from only one of them.
- a support portion may be arranged immediately downstream of the tobacco rod and between the cooling portion 13. When the support portion is provided, the support portion is arranged in contact with the rear end of the tobacco rod.
- the support portion may be, for example, a hollow cellulose acetate tube. In other words, the support portion may be formed by penetrating a center hole in the center of the cross section of the columnar cellulose acetate fiber bundle. Further, the support portion may be, for example, a metallic net having a mesh mesh of 5 mesh or more and 35 mesh or less.
- the support portion is located on the downstream side of the tobacco filling in the non-combustion heating type tobacco toward the cooling portion 13. It is an element to prevent being pushed into. It is desirable that the support portion 13 has a low ventilation resistance and a low aerosol filtration capacity, in addition to a function of preventing the tobacco filling from being pushed downstream.
- the support portion also functions as a spacer for separating the non-combustion heating type tobacco cooling portion 13 from the tobacco rod.
- the non-combustion heat-not-burn tobacco 1 has a cooling unit 13 and a part of a rolling paper 12 (chip paper) covering the periphery of the cooling unit 13 having micropores for taking in air from the outside. Good (not shown). Due to the presence of such micropores, air flows into the cooling unit 13 from the outside during use, and the vapor containing the aerosol-forming base material and the tobacco flavor component generated by heating the tobacco rod is generated.
- the micropores When it comes into contact with air from the outside and the temperature drops, it liquefies, and the formation of aerosol becomes more reliable.
- the micropores preferably have a diameter of 100 ⁇ m or more and 1000 ⁇ m or less.
- the micropores are preferably substantially circular or substantially elliptical, and in the case of substantially elliptical shape, the diameter represents a major axis.
- the number of micropores may be one or a plurality. In the case of a plurality, it is preferable to form a row on the circumference of the wrapping paper 12 (chip paper).
- the cooling unit 13 may be, for example, a thick paper processed into a cylindrical shape.
- the inside of the cylinder is hollow, and the vapor containing the aerosol-forming base material and the tobacco flavor component comes into contact with the air in the cavity and is cooled.
- the vapor comes into contact with the outside air in the cavity to further increase the cooling effect, and a sheet-shaped member such as paper, polymer film, or metal leaf is inside the cylinder. May be filled with gathered material.
- the steam can be cooled by utilizing the specific heat of these members.
- Examples of the filter unit 14 include those using cellulose acetate tow as a material.
- the single yarn fineness and total fineness of cellulose acetate tow are not particularly limited, but in the case of a filter portion having a circumference of 22 mm, the single yarn fineness is preferably 5 g / 9000 m or more and 12 g / 9000 m or less, and the total fineness is 12000 g /. It is preferably 9000 m or more and 30,000 g / 9000 m or less.
- the cross-sectional shape of the fibers of the cellulose acetate tow may be a Y cross section or an R cross section.
- the filter unit 14 may be composed of a so-called paper filter made of pulp.
- the filter unit 14 is composed of a single segment in FIG. 1, it may be composed of a plurality of segments. When it is composed of a plurality of segments, for example, a hollow segment is arranged on the upstream side, and the cross section of the mouthpiece is filled with cellulose acetate tow as a segment on the downstream side (the mouthpiece end side of the user). it can.
- the adjustment of the ventilation resistance and the addition of additives can be appropriately designed.
- the material of the wrapping paper 12 is not particularly limited, and paper made of general vegetable fibers (pulp), sheets using polymer-based (polypropylene, polyethylene, nylon, etc.) chemical fibers, and polymers.
- a system sheet, a metal foil such as an aluminum foil, or the like can be used.
- the thickness of the wrapping paper 12 is not particularly limited, but is usually 30 ⁇ m or more, preferably 35 ⁇ m or more, from the viewpoint of the delivery amount of the aerosol and the appropriateness of production. On the other hand, it is usually 150 ⁇ m or less, preferably 140 ⁇ m or less.
- the basis weight of the wrapping paper 12 is not particularly limited, but is usually 30 g / m 2 or more, preferably 35 g / m 2 or more, from the viewpoint of the delivery amount of the aerosol and the appropriateness of production. On the other hand, it is usually 150 g / m 2 or less, and preferably 140 g / m 2 or less.
- the air permeability of the wrapping paper is not particularly limited, but is preferably 10 cholesterol units or less from the viewpoint of the delivery amount of aerosol and the appropriateness of production.
- the wrapping paper may be fixed after being wrapped around the tobacco rod, the cooling portion 13, the filter portion 14, and the support portion if necessary, using, for example, vinyl acetate-based glue.
- the length of the non-combustion heat-not-burn tobacco 1 in the longitudinal direction is preferably 40 mm or more and 100 mm or less, more preferably 40 mm or more and 80 mm or less, and 45 mm or more. It is more preferably 60 mm or less.
- the circumference of the non-combustion heat-not-burn tobacco is preferably 15 mm or more and 25 mm or less, more preferably 17 mm or more and 24 mm or less, and further preferably 21 mm or more and 23 mm or less. Further, in the embodiment shown in FIG.
- the length of the tobacco rod is about 12 mm
- the length of the cooling portion is about 20 mm
- the length of the support portion is about 8 mm
- the length of the filter portion is about 7 mm.
- the length of each of these individual segments can be appropriately changed according to manufacturing suitability, required quality, and the like.
- a bowl-shaped container having a through hole on the bottom surface, the above-mentioned tobacco filling filled in the container, and the upper surface of the container are covered and penetrated during use.
- Examples thereof include those having a hole forming portion for forming a hole and a lid having a heater.
- the shape of the container is not particularly limited, but it is desirable that the container has a shape that can be inserted into the recess of the housing of the electrically heated tobacco product described later.
- the side surface is tapered toward the bottom surface can be mentioned.
- the through hole of the bottom surface has a diameter such that the tobacco filling does not leak to the outside.
- the container filled with the first tobacco filling or the second tobacco filling can be exemplified.
- the first embodiment of the heat-not-burn tobacco product is an electric heating type device including a heater member, a battery unit serving as a power source for the heater member, and a control unit for controlling the heater member, and the heater.
- An electrically heated tobacco product comprising the non-combustion heated tobacco of the first embodiment described above, which is inserted so as to come into contact with a member.
- An aspect of the electrically heated tobacco product may be an embodiment of heating the outer peripheral surface of the non-combustion heating type tobacco as shown in FIG. 2, and the tobacco rod portion in the non-combustion heating type tobacco as shown in FIG. It may be a mode of heating from the inside of the.
- the electric heating type tobacco product 3 is used by being inserted into a heater member 23 arranged inside the electric heating type device 2 so that the non-combustion heating type tobacco 1 described above comes into contact with the heater member 23.
- the electrically heating device 2 has, for example, a battery unit 20 and a control unit 21 inside a resin skeleton 22.
- the non-combustion heating type tobacco 1 When the non-combustion heating type tobacco 1 is inserted into the electric heating type device 2, the outer peripheral surface of the tobacco rod portion comes into contact with the heater member 23 of the electric heating type device 2, and eventually the entire outer peripheral surface of the tobacco rod portion and the winding portion A part of the outer peripheral surface comes into contact with the heater member.
- the heater member 23 of the electric heating type device 2 generates heat under the control of the control unit 20.
- the heater member may be, for example, a sheet heater, a flat plate heater, or a tubular heater.
- the sheet-shaped heater is a flexible sheet-shaped heater, and examples thereof include a heater containing a heat-resistant polymer film (thickness of about 20 to 225 ⁇ m) such as polyimide.
- the flat plate heater is a rigid flat plate heater (thickness of about 200 to 500 ⁇ m), and examples thereof include a heater having a resistance circuit on a flat plate base material and having the portion as a heat generating portion.
- the tubular heater is a hollow or solid tubular heater (thickness of about 200 to 500 ⁇ m), and examples thereof include a heater having a resistance circuit on the outer peripheral surface of a cylinder made of metal or the like and having the portion as a heat generating portion. .. Further, a rod-shaped heater made of metal or the like having a resistance circuit inside and having the portion as a heat generating portion, and a cone-shaped heater can also be mentioned.
- the cross-sectional shape of the tubular heater may be a circle, an ellipse, a polygon, a polygon with rounded corners, or the like. In the case of heating the outer peripheral surface of the non-combustion heating type cigarette as shown in FIG.
- the above-mentioned sheet-shaped heater, flat plate-shaped heater, and cylindrical heater can be used.
- the above-mentioned flat plate heater, columnar heater, and cone heater can be used.
- the length of the heater member in the major axis direction can be within the range of L ⁇ 5.0 mm, where L mm is the length of the tobacco rod portion in the major axis direction.
- the length of the heater member in the major axis direction sufficiently transfers heat to the tobacco rod portion and sufficiently volatilizes the aerosol-forming base material and flavor components contained in the tobacco filling, that is, from the viewpoint of aerosol delivery, L mm.
- L + 0.5 mm or less L + 1.0 mm or less, L + 1.5 mm or less, L + 2.0 mm or less, L + 2.5 mm or less, L + 3 It is preferably 0.0 mm or less, L + 3.5 mm or less, L + 4.0 mm or less, L + 4.5 mm or less, or L + 5.0 mm or less.
- the heating intensity such as the heating time and the heating temperature of the non-combustion heating type tobacco by the heater member can be set in advance for each electric heating type tobacco product. For example, by inserting a non-combustion-heated tobacco into an electrically-heated device and then performing preheating for a certain period of time, the temperature of the outer peripheral surface of the portion of the non-combustion-heated tobacco inserted into the device becomes X ( It can be set in advance so that it is heated to (° C.) and then the temperature is maintained at a constant temperature of X (° C.) or lower.
- the X (° C.) is preferably 80 ° C. or higher and 400 ° C. or lower from the viewpoint of the amount of aerosol delivered.
- the above range can be mentioned as the temperature of the heater member, but the temperature of the non-combustion heating type tobacco according to the embodiment of the present invention inserted into the heater member of the above electric heating type tobacco product is approximately 250 ° C. to 400 ° C. It is preferable to be heated.
- the fact that the non-combustion heat-not-burn tobacco according to the embodiment of the present invention is heated in such a temperature range contributes to maintaining good stability of the aerosol during use.
- the vapor containing the aerosol-generating base material and the flavor component generated from the tobacco rod portion reaches the user's oral cavity through the mouthpiece portion composed of the cooling portion, the filter portion, and the like.
- the second embodiment of the electrically heated tobacco product uses the non-combustion heated tobacco of the second embodiment described above, and has a power supply, a control unit, and a housing for accommodating them.
- the housing has a recess for accommodating the non-combustion heat-not-burn tobacco of the second embodiment and a ventilation hole.
- the electrically heated tobacco product according to the second embodiment has a removable mouthpiece for sucking an aerosol generated from the non-combustion heating type tobacco housed in the recess and a flavor component.
- the mouthpiece has an electrical contact that electrically connects to the lid of the non-combustion heat-not-burn tobacco container, and when the mouthpiece is attached to the housing, it electrically connects to the heater of the lid of the container. In addition, the connection also electrically connects to the control unit housed in the housing.
- the user installs the second non-combustion heat-not-burn tobacco in the recess of the housing of the heat-not-burn tobacco product, and attaches the mouthpiece to the heat-not-burn tobacco housing.
- the hole-forming portion of the lid of the container opens, and the mouthpiece of the mouthpiece and the flow path of the container communicate with each other.
- the aerosol-forming base material and the flavor component are volatilized from the tobacco filling in the container to generate an aerosol.
- the electric heating type tobacco product 4 for heating non-combustion heating type tobacco by induction heating includes an inductor 33 and an inductor instead of the heater member 23 of the electric heating type tobacco product according to the first embodiment shown in FIG.
- a battery unit 30 for supplying electric power to the vehicle and operating the battery unit 30 and a control unit 31 for controlling the supply of electric power are provided (FIG. 4). The operation may be manual or may occur automatically in response to the user's insertion in a non-combustion heated cigarette inserted into the electroheated device 5.
- the battery unit 30 supplies a DC current.
- the control unit 31 includes a DC / AC inverter for supplying a high frequency AC current to the inductor.
- a high frequency alternating current passes through the induction coil that forms part of the inductor 33.
- the inductor 33 creates a fluctuating electromagnetic field.
- the frequency of the electromagnetic field is preferably 1 MHz or more and 30 MHz or less, preferably 2 MHz or more and 10 MHz or less, for example, 5 MHz or more and 7 MHz or less.
- the non-combustion heated tobacco 1' is designed to work with the use of an electrically operated electroheated device 5 to heat the tobacco filling inside a rod portion composed of the tobacco filling. It has a susceptor 35.
- any one of aluminum, iron, iron alloy, stainless steel, nickel, and nickel alloy can be exemplified.
- the inductor 33 is located adjacent to the inner wall of the receiving chamber 34 of the non-combustion heated tobacco product.
- the user inserts the non-combustion heat-not-burn tobacco 1'into the electric heating device 5 so that the portion having the susceptor 35 is located close to the inductor 33.
- the susceptor 35 of the non-combustion heat-not-burn tobacco 1' is located in the fluctuating electromagnetic field.
- a fluctuating electromagnetic field creates an eddy current in the susceptor 35, which is heated as a result. Further heating is provided by the magnetic hysteresis loss in the susceptor 35.
- the heated susceptor 35 heats the tobacco rod portion of the non-combustion heat-not-burn tobacco 1'to a temperature sufficient to form an aerosol.
- the heating temperature at this time an embodiment in which the tobacco rod portion is heated to 250 ° C. or higher and 400 ° C. or lower can be mentioned.
- the aerosol produced by heating passes through the non-combustion heat-not-burn tobacco product and is sucked by the user.
- the aerosol stabilizers shown in Table 1 were dissolved in ethanol at a ratio of 0.1 to 1% by weight, and the mixture was pre-cut to 115 mm ⁇ 115 mm using a glass sprayer (tea 30 ml, type 4). The surface was uniformly sprayed and added so as to have the weight addition ratio shown in Table 1.
- the tobacco rod of Experimental Example 1 produced by the above method was cut to a length of 12 mm. These tobacco rods are provided with a cooling section in which a center hole (8.0Y40000) of a support member (8.0Y40000) of 8 mm and a paper tube having a length of 20 mm are provided with diluted air holes (ventilation rate of 20%), and acetic acid having a length of 7 mm.
- a non-combustion heat-not-burn tobacco was produced by connecting a filter portion filled with cellulose fibers (5.0Y35000) by hand with rolling paper.
- VAS method Visual Analog Scale method
- Tobacco sensation cigarette-like was evaluated as "a somatic sensation including a cigarette-like flavor and irritation.”
- the maximum number of evaluations per day was 5, and additive-free lots were also evaluated for each evaluation day.
- the evaluation was made by starting smoking 30 seconds after the start of heating, then smoking at intervals of 30 seconds, and smoking was possible for up to 5 minutes. In order to perform a stable evaluation, it was excluded from the evaluation target for 2 minutes from the start of heating.
- the median number of particles that can be measured by DMS is an index for the generated aerosol particles to exist stably without volatilizing until they are delivered to the user's oral cavity.
- the diameter (Count Median Diameter) was used. Since the DMS measures the aerosol under reduced pressure (0.25 bar) and high dilution conditions, the highly volatile aerosol easily disappears and is gasified. In the case of an aerosol having relatively low volatility, although the aerosol shrinks due to volatilization, a particle size distribution can be obtained as a residual aerosol.
- the particle size distribution of the residual aerosol differs depending on the amount of volatility.
- the peak particle size based on the number indicates stability under reduced pressure and high dilution conditions, and was used as an index. The larger the central diameter of the number of particles, the more stable the aerosol exists, and the smaller the central diameter of the number of particles, the more unstable the aerosol.
- the primary dilution was performed at 25 L / min and the secondary dilution was performed at a setting of 200 times.
- Spraytec (Model STP5321, Mulvern) is used to measure the mass peak particle size immediately after the occurrence before dilution or decompression, and there is no difference in the type of additive and the range of the amount added in this example. There was a median diameter of the number of particles in the vicinity of about 200 nm.
- Table 2 shows the test results.
- FIG. 5 shows the solubility with glycerin and the effect of tobacco sensation on each single fatty acid
- FIG. 6 shows the tobacco sensation when palmitic acid, which is a saturated fatty acid of C16, and oleic acid as a mixture are added.
- palmitic acid which is a saturated fatty acid of C16
- oleic acid as a mixture
- the highest tobacco sensation can be obtained when palmitic acid, which is a saturated fatty acid of C16
- stearic acid which is a saturated fatty acid of C18
- unsaturated fatty acids have a relatively high solubility in glycerin, it was clarified that even if they are C18, their effects are lower than those of saturated fatty acids. Although the effect was confirmed on the saturated fatty acid of C19, the amount of C19 is very small as a naturally occurring amount, and there is a manufacturing problem when using it. Therefore, it is considered that a high tobacco sensation can be obtained by adding saturated fatty acids corresponding to C16 to C18.
- palmitic acid which is an unsaturated fatty acid
- palmitic acid which is a saturated fatty acid of C16
- palmitic acid which is a saturated fatty acid of C16
- palmitic acid which is a saturated fatty acid of C16
- stearic acid which is a saturated fatty acid of C18
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Abstract
Description
電気加熱式たばこ製品の使用時に、たばこ充填物に含まれる香喫味成分がエアロゾル生成基材とともに揮発すると、冷却され凝縮生成したエアロゾル粒子内に香喫味成分が取り込まれる。そのため、使用者の口腔内に香喫味成分が安定してデリバリーされるためには、生成したエアロゾル粒子が使用者の口腔内にデリバリーされるまで揮発せずに安定して存在することが重要であることが分かってきた。エアロゾル粒子の表面の成分組成は、エアロゾル粒子の物性に大きく寄与し、エアロゾル粒子の表面を難揮発性の成分にて被覆することがエアロゾル粒子の安定化には有効であると考えられる。生成するエアロゾル粒子が口腔内にデリバリーされるまでの間に揮発せずに安定して存在するために、例えば水やグリセリンといった親水性の物質から構成されるエアロゾル粒子の表面に局在的に存在し得る、特定の脂肪酸をたばこ充填物に添加するとよいことが分かってきた。
[1] たばこ材料とエアロゾル生成基材とを含む、非燃焼加熱式たばこ用のたばこ充填物であって、前記たばこ充填物は、脂質を含有するエアロゾル安定剤が添加されており、該エアロゾル安定剤が含有する脂質における、炭素数16~18の飽和脂肪酸の割合が50重量%以上である、非燃焼加熱式たばこ用のたばこ充填物。
[2] 前記たばこ充填物への前記エアロゾル安定剤の添加量が、たばこ充填物全量の乾燥重量に対して0.1~5.0重量%である、[1]に記載の非燃焼加熱式たばこ用のたばこ充填物。
[3] 前記炭素数16~18の飽和脂肪酸のグリセリンへの溶解度が0.13mg/g以下である、[1]又は[2]に記載の非燃焼加熱式たばこ用のたばこ充填物。
[4] 前記炭素数16~18の飽和脂肪酸がパルミチン酸、ステアリン酸、及びこれらの混合物から選ばれる1以上である、[1]~[3]のいずれかに記載の非燃焼加熱式たばこ用のたばこ充填物。
[5] 前記たばこ充填物は、たばこ刻みから構成されるたばこ材料の成形体である、[1]~[4]のいずれかに記載の非燃焼加熱式たばこ用のたばこ充填物。
[6] 前記たばこ充填物は、たばこシートから構成されるたばこ材料の成形体である、[1]~[4]のいずれかに記載の非燃焼加熱式たばこ用のたばこ充填物。
[7] 前記たばこ充填物が、顆粒状のたばこ材料から構成される、[1]~[4]のいずれかに記載の非燃焼加熱式たばこ用のたばこ充填物。
[8] 前記エアロゾル安定剤は、前記たばこ材料の成形体の表面に添加されている、[5]又は[6]に記載の非燃焼加熱式たばこ用のたばこ充填物。
[9] 前記エアロゾル安定剤は、前記たばこ材料に均一に添加されている、[5]~[7]のいずれか一項に記載の非燃焼加熱式たばこ用のたばこ充填物。
[10] [1]~[9]のいずれかに記載のたばこ充填物からなるたばこロッド部と、該たばこロッド部とは反対側の端部を構成するマウスピース部とを有する非燃焼加熱式たばこ。
[11] 前記マウスピース部は、冷却部を備える、[10]に記載の非燃焼加熱式たばこ。
[12] [7]に記載のたばこ充填物と、当該たばこ充填物が収容された容器と、を備える、非燃焼加熱式たばこ。
[13] 前記たばこロッド部の内部にたばこ充填物を加熱するサセプタを有する、[10]又は[11]に記載の非燃焼加熱式たばこ。
[14] ヒーター部材と、該ヒーター部材の電力源となる電池ユニットと、該ヒーター部材を制御するための制御ユニットとを備える電気加熱式デバイスと、該ヒーター部材に接触するように挿入される、[10]~[12]のいずれかに記載の非燃焼加熱式たばこと、から構成され、
非燃焼加熱式たばこのたばこロッド部が250~400℃に加熱される、電気加熱式たばこ製品。
[15] 前記ヒーター部材が円筒形である、[14]に記載の電気加熱式たばこ製品。
[16] インダクタと、該インダクタに電力を供給する電池ユニットと、電力の供給を制御する制御ユニットとを備える電気加熱式デバイスと、該インダクタに近接するように挿入される、[13]に記載の非燃焼加熱式たばこと、から構成され、
非燃焼加熱式たばこのたばこロッド部が250~400℃に加熱される、電気加熱式たばこ製品。
[17] 脂質を含有し、該脂質における炭素数16~18の飽和脂肪酸の割合が50重量%以上であるエアロゾル安定剤を、成形前又は成形後のたばこ材料に添加する工程を含む、たばこ充填物の製造方法。
[18] 前記成形前のたばこ材料にエアロゾル安定剤を添加する工程が、前記たばこ材料と前記エアロゾル安定剤を混合する工程である、[17]に記載のたばこ充填物の製造方法。
[19] 前記成形後のたばこ材料にエアロゾル安定剤を添加する工程が、前記成形後のたばこ材料に前記エアロゾル安定剤を噴霧又は塗布する工程である、[17]に記載のたばこ充填物の製造方法。
なお、本明細書において「非燃焼加熱式たばこ」とは、従来のシガレットとは異なり、燃焼を伴わない加熱により、たばこ材料に含まれる香喫味成分を使用者の口腔内にデリバリーできるたばこのことをいう。
本明細書において、「たばこ原料」は、例えば、たばこ葉のラミナ、中骨、茎等、そのままではたばこ充填物として用いないものである。「たばこ材料」とは、たばこ充填物を構成する材料であり、例えば後述する「たばこシート」や「たばこ顆粒」、「たばこ刻み」、「たばこ細粉」のような、「たばこ原料」を用いて製造される物品である。
本発明の実施形態にかかる非燃焼加熱式たばこ用のたばこ充填物は、たばこ材料とエアロゾル生成基材とを含み、該たばこ充填物は、脂質を含有するエアロゾル安定剤が添加されており、該エアロゾル安定剤が含有する脂質における、炭素数16~18の飽和脂肪酸の割合が50重量%以上である。その割合で炭素数16~18の飽和脂肪酸を含むことで、本発明の課題を解決することができる。
また、脂質における炭素数16~18の飽和脂肪酸の割合は、80重量%以上であることがより好ましく、90重量%以上であることがさらに好ましく、99重量%以上であることが特に好ましい。炭素数16~18の飽和脂肪酸以外の脂質については特に制限はない。ただし、炭素数16~18の飽和脂肪酸以外の脂質についてはできるだけ含まない方が好ましい。
エアロゾルを主に形成する水やグリセリンに対し炭素数16~18の飽和脂肪酸の溶解度は極めて小さく、エアロゾル粒子の被覆に影響を与えると考えられる。しかし所定量以上の溶解度の高い脂質が混ざることで、炭素数16~18の飽和脂肪酸の元来持つ被覆効果が十分に発揮できなくなる可能性がある。そのため、個々の脂質の溶解度と、複数脂質の混合物である場合、溶解度の低い脂質と高い脂質の割合は効果を予測するための指標として重要である。
本明細書における「エアロゾル安定剤」とは、非燃焼加熱式たばこから生じたエアロゾル粒子の空気中での安定性を維持するためのものであり、上記のように特定の脂質を含有するものである。
なお、上記飽和脂肪酸を含有するエアロゾル安定剤は、脂質に加えて他の成分を含んでもよいが、エアロゾル安定剤における脂質の含有量は、90重量%以上であることが好ましく、95重量%以上であることがより好ましく、99重量%以上であることが特に好ましい。
グリセリンの溶解度は、2gのグリセリンに溶解した脂肪酸を定量する方法が最も良い。具体的には、グリセリンに過剰量の脂肪酸を添加した後、常温で24時間以上静置又は遠心分離等により2層分離を行い、100mgのグリセリンを分取し、2mLのメタノールに転溶してグリセリンに溶解した脂肪酸量をGas Chromatograph - Flame Ionized Detector (GC-FID)やGas Chromatograph - Mass Spectrometer (GC-MS) にて定量する。
炭素数16~18の飽和脂肪酸としては、混合物であってもよく、それぞれの飽和脂肪酸を単独で含むものを用いてもよい。例えば、パルミチン酸及びステアリン酸をそれぞれ単独で用いることも好ましい。
脂質として炭素数16~18の飽和脂肪酸のみを含み、さらに、エアロゾル安定剤として炭素数16~18の飽和脂肪酸のみを含むものを用いることができる。
たばこ充填物に対する炭素数16~18の飽和脂肪酸の添加量としては、たばこ充填物全量の乾燥重量に対して0.1重量%以上、2.0重量%以下であることが好ましく、0.5重量%以上、1.5重量%以下であることがより好ましく、0.75重量%以上、1.25重量%以下であることが特に好ましい。エアロゾル安定剤の添加量と炭素数16~18の飽和脂肪酸の添加量が同一の範囲であってもよいのは、エアロゾル安定剤が脂質から構成され、その脂質の全てが炭素数16~18の飽和脂肪酸であってもよいことを示す。
本発明の実施形態にかかる非燃焼加熱式たばこ用のたばこ充填物の具体的態様として、たばこ刻みを含むたばこ材料から構成される成形体(以下、第一のたばこ充填物ともいう)と、後述するたばこシートから構成されるたばこ材料の成形体(以下、第二のたばこ充填物ともいう)と、たばこ原料を用いて調製した顆粒から構成されるもの(以下、第三のたばこ充填物ともいう)を挙げることができる。
これらの成形体として、いずれもロッド状のものを挙げることができる。
なお、本発明において非燃焼加熱型式たばこの長手方向は、図1におけるhの方向が長手方向である。また、非燃焼加熱式たばこがロッド状である場合、係る非燃焼加熱式たばこにおける長手方向をたばこロッドの長手方向と同一とみなしてもよい。本発明の非燃焼加熱式たばこにおけるたばこ充填物は、以下のように定義されるアスペクト比が1以上である形状を満たす柱状形状を有していることが好ましい。
アスペクト比=h/w
wは柱状体の底面の幅、hは高さであり、h≧wであることが好ましい。しかし、本発明においては、上述した通り、長手方向はhで示された方向であると規定している。したがって、w≧hである場合においてもhで示された方向を便宜上長手方向と呼ぶ。底面の形状は限定されず、多角、角丸多角、円、楕円等であってよく、幅wは当該底面が円形の場合は直径、楕円形である場合は長径、多角形又は角丸多角である場合は外接円の直径又は外接楕円の長径である。例えば、図1に示す態様においては、底面が円であるのでその直径を認定できる。当該直径が幅w、これに直交する長さが高さhとなる。たばこロッドを構成するたばこ充填物の高さhは12mm以上、70mm以下程度、幅wは4mm以上、9mm以下程度であることが好ましい。
第一のたばこ充填物に含まれるたばこ刻みの大きさやその調製法については特に制限はない。例えば、乾燥したたばこ葉を、幅0.5mm以上、2.0mm以下に刻んだものを用いてもよい。
また、均一化シートの粉砕物を用いる場合、乾燥したたばこ葉を平均粒径が20μm以上、200μm以下程度になるように粉砕して均一化したものをシート加工し、それを幅0.5mm以上、2.0mm以下に刻んだものを用いてもよい。
第一のたばこ充填物中のエアロゾル生成基材の含有量は、特に限定されず、十分にエアロゾルを生成させるとともに、良好な喫味の付与の観点から、たばこ充填物の全量に対して通常5重量%以上であり、好ましくは10重量%以上であり、また、通常50重量%以下であり、好ましくは15重量%以上、25重量%以下である。
上記の第一のたばこ充填物は、それが内側になるように巻紙によって巻装されてたばこロッドを形成する。なお、たばこ充填物については、それを構成するたばこ材料をランダムに配置してもよく、たばこロッドの長手方向に沿うように配置したストランド形式であってもよい。
シート基材としては、例えば、たばこ粉末等のたばこ材料等が挙げられる。本発明において、シート基材としてはたばこ材料が好ましい。たばこ材料の基材シートに、必要に応じて香味を発生じうる成分を担持したたばこシートであることが好ましい。たばこシートは、加熱に伴ってエアロゾルを生成する。エアロゾル生成基材としてグリセリン、プロピレングリコール、1,3-ブタンジオール等のポリオール等のエアロゾル源を添加する。かかるエアロゾル生成基材の添加量は、たばこシートの乾燥重量に対して5重量%以上、50重量%以下が好ましく、15重量%以上、25重量%以下がより好ましい。
たばこシートは抄造、スラリー、圧延、等の公知の方法で適宜製造できる。なお、第一のたばこ充填物で説明した均一化シートを用いることもできる。
抄造の場合は、以下の工程を含む方法で製造できる。1)乾燥たばこ葉を粗砕し、水で抽出して水抽出物と残渣に分離する。2)水抽出物を減圧乾燥して濃縮する。3)残渣にパルプを加え、リファイナで繊維化した後、抄紙する。4)抄紙したシートに水抽出物の濃縮液を添加して乾燥し、たばこシートとする。この場合、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(特表2004-510422号公報参照)。
スラリー法の場合は、以下の工程を含む方法で製造できる。1)水、パルプ及びバインダーと、砕いたたばこ葉を混合する。2)当該混合物を薄く延ばして(キャストして)乾燥する。この場合、水、パルプ及びバインダーと、砕いたたばこ葉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除去する工程を加えてもよい。
この他、国際公開第2014/104078号に記載されているように、以下の工程を含む方法によって製造された不織布状のたばこシートを用いることもできる。1)粉粒状のたばこ葉と結合剤を混合する。2)当該混合物を不織布によって挟む。3)当該積層物を熱溶着によって一定形状に成形し、不織布状のたばこシートを得る。
前記の各方法で用いる原料のたばこ葉の種類は、第一の充填物で説明したものと同じものを用いることができる。
たばこシートの組成は特に限定されないが、例えば、たばこ原料(たばこ葉)の含有量はたばこシート全重量に対して50重量%以上、95重量%以下であることが好ましい。また、たばこシートはバインダーを含んでもよく、係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、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)等が挙げられる。バインダー量としては、たばこシート全重量に対して1重量%以上、20重量%以下であることが好ましい。たばこシートはさらに他の添加物を含んでもよい。添加物としては、例えばパルプなどのフィラーを挙げることができる。本発明においては複数のたばこシートを用いるが、係るたばこシートはすべて同じ組成あるいは物性であってもよいし、各たばこシートの中の一部又は全部が異なる組成あるいは物性であってもよい。
また、該長手方向軸と、最内層のたばこシートとの間に、前記開口部として長手方向に延在する貫通口が形成される。
1枚のたばこシートが重畳的に巻き上げられて成形体を形成する場合と、複数のたばこシートから成形体が構成される場合のそれぞれにおいて、たばこシート間に、当該たばこシートが接触しない非接触部(隙間)が存在すると、香味流路を確保して香味成分のデリバリー効率を高めることができる。他方で、たばこシートの接触部分を介してヒーターからの熱を外側のたばこシートに伝達できるので高い伝熱効率を確保することができる。
たばこシート間に、当該たばこシートが接触しない非接触部を設けるために、例えば、エンボス加工したたばこシートを用いる、複数のたばこシートを用いる場合、隣接するたばこシート同士の全面を接着せずに積層する、隣接するたばこシート同士の一部を接着して積層する、あるいは隣接するたばこシート同士の全面あるいは一部を、巻上げ成形後に剥がれるように軽度に接着して積層することで積層体(成形体)を調製する方法を挙げることができる。
巻紙を含めたたばこロッドを調製する場合には、積層体(成形体)の最底部に上記の巻紙を配置してもよい。
各たばこシートの厚みについては制限されないが、伝熱効率と強度の兼ね合いから、200μm以上、600μm以下が好ましい。各たばこシートの厚みについては、それぞれ同一であっても異なっていてもよい。
第二のたばこ充填物を構成するたばこシートの枚数は1枚以上であれば特に制限されないが、例えば1枚、2枚、3枚、4枚、5枚、又は6枚を挙げることができる。
第三のたばこ充填物の原料は、特に限定されないが、(a)たばこ材料、(b)水分、(c)炭酸カリウム及び炭酸水素ナトリウムからなる群の中から選ばれる少なくとも1種のpH調整剤、、(d)プルラン及びヒドロキシプロピルセルロースからなる群の中から選ばれる少なくとも1種のバインダー、並びに(e)エアロゾル生成基材を挙げることができる。
第三のたばこ充填物の原料混合物は、たばこ材料を、通常、20重量%以上、80重量%以下の量で含有する。
第三のたばこ充填物の原料混合物は、水分を、通常、3重量%以上、13重量%以下の量で含有する。また、第三のたばこ充填物は、水分を、通常、乾燥減量の値が5重量%以上、17重量%以下となるような量で含有し得る。乾燥減量とは、試料の一部を測定のために採取し、採取された試料中の全水分を蒸発させることにより試料を完全乾燥させたとき(たとえば、一定の温度(105℃)で15分間乾燥させたとき)の乾燥前後での重量変化を指し、具体的には、試料に含まれている水分の量及び上記乾燥条件で揮発する揮発性成分の量の合算値の、試料重量に対する割合(重量%)を指す。すなわち、乾燥減量(重量%)は、以下の式で表すことができる。
乾燥減量(重量%)=
{(完全乾燥前の試料の重量)-(完全乾燥後の試料の重量)}×100/完全乾燥前の試料の重量
第三のたばこ充填物の原料混合物は、pH調整剤を、通常、5重量%以上、20重量%以下の量で含有し得る。
第三のたばこ充填物の原料混合物は、バインダーを、通常、0.5重量%以上、15重量%以下の量で含有し得る。
第三のたばこ充填物の原料混合物におけるエアロゾル生成基材の含有量は、5重量%以上、15重量%以下を挙げることができる。
また追加の成分としては、(f)香喫味成分以外の香味材(固体又は液体)が挙げられる。かかる香味材には、糖(スクロース、フルクトース等)、ココア粉、キャロブ粉、コリアンダー粉、リコリス粉、オレンジピール粉、ローズピップ粉、カモミールフラワー(flower)粉、レモンバーベナ粉、ペパーミント粉、リーフ粉、スペアミント粉、紅茶粉、メントール等が含まれる。
第三のたばこ充填物の原料混合物は、上記香味材を、通常、0.5重量%以上、30重量%以下の量で含有し得る。上記香味材は、成分(a)、(b)、(c)、(d)及び(e)と直接混練することにより上記成分に添加してもよいし、あるいは、サイクロデキストリンなどの公知の包接ホスト化合物に担持して包接化合物を調製してからそれを上記成分と混練することにより上記成分に添加してもよい。
第三のたばこ充填物は、上記成分(a)、(b)、(c)、(d)及び(e)からなる場合、その第三のたばこ充填物の原料混合物は、成分(a)を、通常、約33重量%以上(約90重量%以下)の量で含有し得る。
押出し造粒に際しては、混練物を周囲温度で、2kN以上の圧力で押出すことが好ましい。この高圧での押出しにより、押出し造粒機出口での混練物は温度が周囲温度から例えば90℃以上、100℃以下まで瞬間的に急激に上昇し、水分及び揮発性成分が2重量%以上、4重量%以下蒸発する。したがって、混練物を作るために配合する水は、最終製品であるたばこ顆粒中の所望水分よりも上記蒸発量だけ多くの量で用いることができる。
本発明の実施形態にかかるたばこ充填物の製造方法は、上記で説明した第一~第三のたばこ充填物の製造方法にかかるものである。
本発明の実施形態にかかるたばこ充填物の製造方法は、第一~第三のたばこ充填物のいずれにおいても、脂質を含有し、該脂質における炭素数16~18の飽和脂肪酸の割合が50重量%以上であるエアロゾル安定剤を、成形前又は成形後のたばこ材料に添加する工程を含む。
上記エアロゾル安定剤を成形前のたばこ材料に添加する場合、その添加の態様によって、たばこ材料に上記エアロゾル安定剤を均一に添加することができる。
第一及び第三のたばこ充填物の場合、たばこ充填物の調製の際に上記のエアロゾル安定剤を粉砕したたばこ葉や刻み、シートたばこの粉砕物等の他の材料と混合することで、上記のエアロゾル安定剤を成形前のたばこ材料に均一に添加することができる。
第二のたばこ充填物の場合、たばこシートの作製時に上記のエアロゾル安定剤を、原料とするたばこ材料(粉砕したたばこ葉など)に混合することでたばこ材料に上記のエアロゾル安定剤を添加することができる。具体的には、上記で説明した抄造の場合、4)の工程において水抽出物の濃縮液に上記のエアロゾル安定剤を混合し、それを抄紙したシートに添加することで、上記のエアロゾル安定剤を成形前のたばこ材料に添加することができる。
上記で説明したスラリー法により作製する場合、1)の工程において、水、パルプ及びバインダーと砕いたたばこ葉に加え、上記のエアロゾル安定剤を成形前のたばこ材料に均一に添加することができる。
上記で説明した不織布状のたばこシートを得る場合には、1)の工程において、粉粒状のたばこ葉と結合剤を混合する際に、上記のエアロゾル安定剤も混合することで、上記のエアロゾル安定剤を成形前のたばこ材料に均一に添加することができる。
成形前のたばこ材料に上記のエアロゾル安定剤を均一に添加することで、香喫味が安定するので好ましい。
第一のたばこ充填物の場合、ロッド状に成形されたたばこ材料(第三のたばこ充填物の場合は顆粒)の表面に上記エアロゾル安定剤を上記の方法により添加することができる。
第二のたばこ充填物の場合、1枚以上のたばこシートが巻き上げられて形成されたロッド状のたばこ材料の表面に上記エアロゾル安定剤を上記の方法により添加することができる。
(1)前記たばこ材料の成形体の表面に添加されている
(2)前記たばこ材料に均一に添加されている
上記の(1)又は(2)のいずれの態様のたばこ充填物についても、その成形体を巻紙でさらに巻き上げることで、非燃焼加熱式たばこに用いることができる。
その後、成形されたたばこ充填物を巻紙により巻装することで非燃焼加熱式たばこに供するたばこロッドを作製できる。なお、巻装の際には公知の巻取装置を用いることができる。
巻紙の構成は、特段制限されず、一般的なものを用いることができる。例えば、巻紙に用いられる原紙としては、セルロース繊維紙を用いることができ、より具体的には、麻もしくは木材あるいはそれらの混合物を挙げることができる。なお、ここでいう「巻紙」とは、たばこ充填物を巻装するためのものである。
巻紙は填料を含んでいてもよく、填料の種類は限定されるものではなく、炭酸カルシウム、炭酸マグネシウムなどの金属炭酸塩、酸化チタン、酸化アルミニウムなどの金属酸化物、硫酸バリウム、硫酸カルシウムなどの金属硫酸塩、硫化亜鉛などの金属硫化物、石英、カオリン、タルク、ケイソウ土、石膏などが挙げられ、特に、白色度・不透明度の向上及び加熱速度の増加の観点から炭酸カルシウムを含んでいることが好ましい。
巻紙中の填料の配合割合は、特に限定されるものではなく、通常1重量%以上、50重量%以下であり、5重量%以上、45重量%以下であることが好ましく、10重量%以上、42重量%以下であることがより好ましく、20重量%以上、40重量%以下であることが特に好ましい。なお、例えば、炭酸カルシウムの含有量を求める場合、灰分測定により、又は、抽出後、カルシウムイオンを定量することにより求めることができる。
上記範囲の下限を下回ると巻紙が焦げやすくなり、また、上限を上回ると巻紙の強度が大きく低下し、巻上性が悪化し得る。
助剤として、紙力増強剤を添加してもよく、例えば、ポリアクリルアミド、カチオンでんぷん、酸化でんぷん、CMC、ポリアミドエピクロロヒドリン樹脂、ポリビニルアルコール等を挙げられる。特に、酸化でんぷんについては、極少量用いることにより、通気度が向上することが知られている(特開2017-218699号公報)。
また、巻紙は、適宜コーティングされていてもよい。
巻紙の通気度は、通常0コレスタ単位以上、120コレスタ単位以下であり、5コレスタ単位以上、100コレスタ単位以下であることが好ましく、10コレスタ単位以上、80コレスタ単位以下であることがより好ましい。この範囲内であると、適度な強度及び喫味を維持することができる。
本発明の実施形態にかかる非燃焼加熱式たばこの一実施形態として、例えば図1の構成を有するものを挙げることができる。
図1の非燃焼加熱式たばこ1は、たばこ充填物10と、たばこ充填物10を巻装する巻紙(図示せず)から構成されるたばこロッドと、該たばこロッドとは反対側の端部を構成するマウスピース部11とを有し、前記たばこロッドと前記マウスピース部は、前記たばこ充填物を巻装する巻紙と同じ又は別の巻紙12(図1ではチップペーパー)を用いて連結されている。
図1の実施形態は、たばこ充填物として上記の第一のたばこ充填物を用いたものである。第一のたばこ充填物に含まれる刻み(たばこ葉を刻んだもの、又は均一化シートを刻んだもの:例えば0.5mm以上、2.0mm以下の幅)の長さは、1.0mm以上、4.0mm以下程度となることが多く、これらの刻みは、たばこ充填物中において、ランダムな配向で配置していることが多い。一方、刻みの長さをたばこロッドの長さと略同一の長さに加工して、たばこロッドの長手方向と同方向に刻みを配列して充填することもできる。
図1に示すように、マウスピース部11は、エアロゾル冷却部(単に冷却部ともいう)13及びフィルター部14とを備えてもよい。また、これらを連結するための巻紙としてチップペーパー12を備える。なお、図1ではマウスピース部11は2つのセグメントから構成されているが、マウスピース部11は単一のセグメントから構成されていてもよく、3つのセグメントから構成されていてもよく、4つ以上のセグメントから構成されてもよい。また、マウスピース部を構成するセグメントは、図1のように冷却部とフィルター部の両方が含まれるように構成されていてもよいし、どちらかのみから構成されていてもよい。
図1において、非燃焼加熱式たばこ1は、冷却部13と、冷却部13の周囲を覆う巻紙12(チップペーパー)の一部に、外部からの空気を取り入れるための微小孔を有してもよい(図示せず)。そのような微小孔が存在することで、使用時に外部から冷却部13の内部に空気が流入し、前記たばこロッドが加熱されることで生じるエアロゾル生成基材とたばこ香味成分とを含む蒸気が、外部からの空気と接触して温度が低下することで液化し、エアロゾルの生成がより確実になる。微小孔は、径が100μm以上、1000μm以下であることが好ましい。微小孔は、略円形もしくは略楕円形であることが好ましく、略楕円形の場合の前記径は長径を表す。微小孔は1つでもよいし、複数でもよい。複数の場合は巻紙12(チップペーパー)の円周上に列を形成して配置されることが好ましい。
冷却部13は、例えば厚紙を円筒状に加工したものを挙げることができる。この場合は円筒状の内側は空洞であり、エアロゾル生成基材とたばこ香味成分とを含む蒸気が空洞内の空気と接触して冷却される。前記微小孔を配置している場合はこの空洞内で前記蒸気が外部空気とも接触し、さらに冷却効果が増大する、また、円筒の内側に、紙、ポリマーフィルム、又は金属箔などシート形状の部材をギャザー加工したものを充填してもよい。この場合、これら部材の比熱を利用して前記蒸気を冷却することもできる。
また、フィルター部14は、パルプから作製されるいわゆるペーパーフィルターから構成されてってもよい。
図1ではフィルター部14は単一のセグメントから構成されているが、複数のセグメントから構成されていてもよい。複数のセグメントから構成されている場合、例えば上流側に中空のセグメントを配置し、下流側(使用者の吸口端側)のセグメントとして吸口断面がセルロースアセテートトウで充填されている態様を挙げることもできる。このような態様によれば、生成するエアロゾルの無用な損失を防ぐとともに、非燃焼加熱式たばこの外観を良好にすることができる。
また、フィルターの製造において、通気抵抗の調整や添加物(公知の吸着剤や香料、香料保持材等)の添加を適宜設計できる。
巻紙12(チップペーパー)の材料は特に制限されず、一般的な植物性の繊維(パルプ)で作製された紙や、ポリマー系(ポリプロピレン、ポリエチレン、ナイロンなど)の化学繊維を用いたシート、ポリマー系のシート、アルミ箔のような金属箔等を用いることができる。
巻紙12の厚さは、特段制限されないが、エアロゾルのデリバリー量や製造適正の観点から、通常30μm以上であり、35μm以上であることが好ましい。一方で、通常150μm以下であり、140μm以下であることが好ましい。
巻紙12の坪量は、特段制限されないが、エアロゾルのデリバリー量や製造適正の観点から、通常30g/m2以上であり、35g/m2以上であることが好ましい。一方で、通常150g/m2以下であり、140g/m2以下であることが好ましい。
巻紙の通気度は、特段制限されないが、エアロゾルのデリバリー量や製造適正の観点から、10コレスタ単位以下であることが好ましい。
巻紙は、例えば酢酸ビニル系の糊を用いて、上記のたばこロッド、冷却部13、フィルター部14、及び必要に応じて支持部の周囲を巻装した後に固定する態様を挙げることができる。
上記底面が有する貫通孔は、たばこ充填物が外に漏れださない程度の径を有する。本発明の非燃焼加熱式たばこの第二の実施形態では、上記容器に、上記の第一のたばこ充填物又は第二のたばこ充填物を充填したものを例示できる。
<第一の実施形態>
電気加熱式たばこ製品の第一の実施形態は、ヒーター部材と、該ヒーター部材の電力源となる電池ユニットと、該ヒーター部材を制御するための制御ユニットとを備える電気加熱型デバイスと、該ヒーター部材に接触するように挿入される、上記の第一の実施形態の非燃焼加熱式たばこと、から構成される、電気加熱式たばこ製品である。
電気加熱式たばこ製品の態様としては図2に示すような、非燃焼加熱式たばこの外周面を加熱する態様であってもよく、図3に示すような、非燃焼加熱式たばこにおけるたばこロッド部の内部から加熱する態様であってもよい。なお、図2及び図3に示す電気加熱式デバイス2には空気導入孔が設けられているが、ここでは図示しない。以下、図2を用いて電気加熱式たばこ製品を説明する。
電気加熱式たばこ製品3は、電気加熱式デバイス2の内部に配置された、ヒーター部材23に、上記で説明した非燃焼加熱式たばこ1が接触するように挿入されて使用される。
電気加熱式デバイス2は、例えば樹脂性の躯体22の内部に、電池ユニット20と制御ユニット21とを有する。
非燃焼加熱式たばこ1を電気加熱式デバイス2に挿入すると、たばこロッド部の外周面が電気加熱式デバイス2のヒーター部材23と接触し、やがてたばこロッド部の外周面の全部と巻装部の外周面の一部がヒーター部材に接触する。
電気加熱式デバイス2のヒーター部材23は、制御ユニット20による制御により発熱する。その熱が非燃焼加熱式たばこのたばこロッド部に伝わることで、たばこロッド部のたばこ充填物に含まれるエアロゾル生成基材や香味成分等が揮発する。
図2に示すような、非燃焼加熱式たばこの外周面を加熱する態様である場合、上記のシート状ヒーター、平板状ヒーター、円筒状ヒーターを用いることができる。一方で、図3に示すような、非燃焼加熱式たばこにおけるたばこロッド部の内部から加熱する態様である場合は、上記の平板状ヒーターや柱状ヒーター、錐状ヒーターを用いることができる。
該ヒーター部材の長軸方向の長さは、たばこロッド部の長軸方向の長さをLmmとしたときに、L±5.0mmの範囲内とすることができる。該ヒーター部材の長軸方向の長さは、たばこロッド部に十分に熱を伝え、たばこ充填物に含まれるエアロゾル生成基材や香味成分等を十分に揮発させる、すなわちエアロゾルデリバリーの観点から、Lmm以上であることが好ましく、喫味等へ不所望な影響を及ぼす成分の発生を抑制する観点からL+0.5mm以下、L+1.0mm以下、L+1.5mm以下、L+2.0mm以下、L+2.5mm以下、L+3.0mm以下、L+3.5mm以下、L+4.0mm以下、L+4.5mm以下又はL+5.0mm以下であることが好ましい。
上記X(℃)は、エアロゾルデリバリー量の観点から、80℃以上400℃以下であることが好ましい。具体的には、80℃、90℃、100℃、110℃、120℃、130℃、140℃、150℃、160℃、170℃、180℃、190℃、200℃、210℃、220℃、230℃、240℃、250℃、260℃、270℃、280℃、290℃、300℃、310℃、320℃、330℃、340℃、350℃、360℃、370℃、380℃、390℃、400℃とすることができる。
ヒーター部材の温度として上記の範囲を挙げることができるが、上記の電気加熱式たばこ製品のヒーター部材に挿入される本発明の実施形態にかかる非燃焼加熱式たばこは、概ね250℃~400℃に加熱されることが好ましい。本発明の実施形態にかかる非燃焼加熱式たばこがこのような温度範囲で加熱されることは、使用時のエアロゾルの安定性を良好に保つことに寄与する。
ヒーター部材による加熱により、たばこロッド部から生じるエアロゾル生成基材や香味成分等を含む蒸気は、冷却部やフィルター部等から構成されるマウスピース部を通して使用者の口腔内に到達する。
電気加熱式たばこ製品の第二の実施形態は、上記の第二の実施形態の非燃焼加熱式たばこを用いるものであり、電源と、制御ユニットと、これらを収容するハウジングとを有し、当該ハウジングは第二の実施形態の非燃焼加熱式たばこを収容するための凹部と、ベンチレーション孔を有する。また、第二実施形態にかかる電気加熱型たばこ製品は、上記凹部に収容された非燃焼加熱式たばこから生成するエアロゾルと香喫味成分を吸引するための着脱可能なマウスピースを有する。
マウスピースは、上記非燃焼加熱式たばこの容器の蓋と電気的に接続する電気接点を有し、マウスピースが上記ハウジングに取り付けられると、上記容器の蓋が有するヒーターと電気的に接続する。また、その接続により、ハウジング内に収容された制御ユニットとも電気的に接続する。
使用者は、第二の非燃焼加熱式たばこを電気加熱式たばこ製品のハウジングの凹部に設置し、マウスピースを電気加熱式たばこのハウジングに取り付ける。マウスピースを電気加熱式たばこのハウジングに取り付けると、上記容器の蓋の孔形成部が開口し、マウスピースの吸い口と上記容器の流路が連通する。使用者は電気加熱式たばこに設置されたスイッチを押すことで制御ユニットを介して電源からヒーターに電力を供給し、発熱したヒーターにより非燃焼加熱式たばこが有する容器が加熱される。当該容器が加熱されることで、容器内のたばこ充填物からエアロゾル生成基材と香喫味成分が揮発してエアロゾルが生成する。使用者による吸引操作により、電気加熱式たばこのハウジングが有するベンチレーション孔から空気が流入し、非燃焼加熱式たばこの容器底面が有する貫通孔を通じて当該容器内にも空気が流入する。その空気と、生成した香喫味成分を含むエアロゾルは、共にマウスピースを介して使用者により吸引される。
誘導加熱により非燃焼加熱式たばこを加熱する電気加熱式たばこ製品について説明する。
誘導加熱により非燃焼加熱式たばこを加熱する電気加熱式たばこ製品4は、図2で示す第一の実施形態にかかる電気加熱式たばこ製品のヒーター部材23の代わりに、インダクタ33を備えるとともに、インダクタに電力を供給して作動させる電池ユニット30と、電力の供給を制御する制御ユニット31を備える(図4)。作動は手動でもよく、又は電気加熱式デバイス5の中に挿入される非燃焼加熱式たばこでの使用者の挿入に応答して自動的に起こってもよい。
電池ユニット30はDC電流を供給する。制御ユニット31はインダクタに高周波AC電流を供給するためのDC/ACインバータを含む。
装置が作動する時、高周波の交流電流がインダクタ33の一部を形成する誘電コイルを通過する。これにより、インダクタ33が変動電磁場を生成する。
電磁場の周波数は1MHz以上、30MHz以下、好ましくは2MHz以上、10MHz以下、例えば5MHz以上、7MHz以下変動することが好ましい。
非燃焼加熱式たばこ1’は、電気的に動作する電気加熱式デバイス5の使用と連動するように設計されており、たばこ充填物から構成されるロッド部の内部に、たばこ充填物を加熱するサセプタ35を有する。サセプタ35の材料として、アルミニウム、鉄、鉄合金、ステンレス鋼、ニッケル、ニッケル合金のいずれかを例示できる。
インダクタ33は非燃焼加熱式たばこ製品の受け入れチャンバ34の内壁に隣接して位置する。
使用時には、使用者は、サセプタ35を有する部位がインダクタ33に近接した位置になるように、非燃焼加熱式たばこ1’を電気加熱式デバイス5に挿入する。
非燃焼加熱式たばこ1’が電気加熱式デバイス5の受け入れチャンバ34に正しく設置されると、非燃焼加熱式たばこ1’が有するサセプタ35が変動電磁場内に位置する。
変動電磁場がサセプタ35内に渦電流を生成し、その結果これが加熱される。さらなる加熱がサセプタ35内の磁気ヒステリシス損失により提供される。
加熱されたサセプタ35はエアロゾルを形成するのに十分な温度まで非燃焼加熱式たばこ1’のたばこロッド部を加熱する。この時の加熱温度として、たばこロッド部が250℃以上、400℃以下に加熱される態様を挙げることができる。
加熱により生成したエアロゾルは非燃焼加熱式たばこ製品内を通り、使用者に吸引される。
<たばこロッドの作製>
たばこ充填物として、あらかじめ、エアロゾル生成基材(グリセリン)15/100gをシートたばこの刻みに混合したもの(抄造シート)を準備した。たばこ刻はバーレー種、黄色種、オリエント種=4:4:2(重量比)を混合したものを用いた。エアロゾル安定剤として表1に記載の脂肪酸又は脂質を用いた。表1に記載のエアロゾル安定剤を0.1~1重量%の割合でエタノールに溶解させ、ガラス製噴霧器(茶30ml,4型)を用いて、115mm×115mmにあらかじめカットした抄造シートに対して表1中の重量添加割合になるように均一に表面に噴霧をし、添加した。巻紙として、100%バージンパルプ(70重量%)と填料として炭酸カルシウム(白石工業株式会社製PCX850、30重量%)を使用した通常のシガレット用巻紙を準備した。上記の抄造シートの刻920mgを手巻用インジェクションマシーン(MUS20, Daughers & Ryan Inc.)を用いて、巻円周は22mm、巻き長さは55mmの巻状にした。これを実験例1のたばこロッドとした。
前記方法で作製した実験例1のたばこロッドを長さ12mmに切断した。これらのたばこロッドを、支持部材のセンターホール(8.0Y40000)8mm及び長さ20mmの紙管の外周に希釈空気孔(ベンチレーション率20%)を施した冷却部、さらに、長さ7mmの酢酸セルロース繊維(5.0Y35000)が充填されたフィルター部とを、巻紙にて手作りで接続して非燃焼加熱式たばこを作製した。
実験例1で作製した各非燃焼加熱式たばこを使用試験に供した。使用試験に供した電気加熱式たばこ製品として、上述した構成を有するものを使用した。非燃焼加熱式たばこのたばこロッドが挿入される際のヒーター温度を320℃(円筒型ヒータΦ3.2mm)に設定して使用試験を行なった。官能評価は10人の社内パネルに対して実施をした。評価はVisual Analog Scale法(VAS法)を用いて、たばこ感(シガレット様)に対して「全く感じない」、「非常に弱い」、「弱い」、「やや弱い」、「どちらでもない」、「やや強い」、「強い」、「非常に強い」の8段階の尺度にて評価を行った。たばこ感(シガレット様)は「シガレットに類する香味及び刺激感を含む体性感覚」として評価を行った。1日の最大評価本数は5本とし、評価日ごとに無添加ロットの評価も行った。評価は加熱開始後30秒から喫煙を開始し、その後30秒間隔で喫煙を行い、最大で5分まで喫煙可能とし評価を行った。安定的な評価を行うことを企図して加熱開始から2分間は評価対象外とした。評価終了後から次のロットの評価を行うまでには必ず5分間の休憩をとることとした。たばこ感(シガレット様)は表1に記載の物質を添加したロットの官能評価結果から無添加ロットの官能評価結果を差し引いた値で示した。
溶解度の測定はグリセリン2gに、溶け残りが発生する過剰量の脂肪酸を添加し、グリセリン中に溶解した脂肪酸量を測定した。添加する過剰の脂肪酸が多量となる場合、2層分離が容易ではなくなるため、僅かに過剰となる量を添加する必要がある。脂肪酸添加後48時間静置し、2層分離後、グリセリンを100mg採取し、2mlのメタノールに転溶させGC-FID(model 7890A, Agilent)にて脂肪酸量の定量を行った。
生成したエアロゾル粒子が使用者の口腔内にデリバリーされるまで揮発せずに安定して存在するための指標として、本実験例ではDMS(Differential Mobility Spectrometer, Cambustion)にて測定可能な個数粒子数中央径 (Count Median Diameter)を用いた。DMSは、エアロゾルを減圧(0.25bar)及び高希釈条件下にて計測するため、揮発性の高いエアロゾルは容易に消失しガス化する。比較的揮発性が低いエアロゾルの場合、エアロゾルは揮発により縮小するものの、残渣エアロゾルとして粒子径分布が得られる。このとき、生成したエアロゾル粒子径が同一であれば、揮発性の多寡によって残渣エアロゾルの粒子径分布は異なる。本実施例では、個数基準でのピーク粒径が減圧及び高希釈条件下での安定性を示すと考え、指標として用いた。個数粒子数中央径が大きいほどエアロゾルは安定して存在しており、個数粒子数中央径が小さいほどエアロゾルは不安定であることを示す。本実験条件では、一次希釈を25L/minで行い、二次希釈を200倍の設定にて実施した。なお別途Spraytec (Model STP5321, Mulvern)を用いて、希釈や減圧を伴う前の発生直後の質量ピーク粒径を測定しており、本実施例の添加物の種類及び添加量範囲では、差異は見られず約200nm付近に個数粒子数中央径が存在した。
表2に試験結果を示す。また併せて図5に、グリセリンとの溶解度と各単一の脂肪酸におけるたばこ感の効果を示し、図6に、C16の飽和脂肪酸であるパルミチン酸と、混合物としてオレイン酸を添加した際のたばこ感を示すとともに、一般的に脂質として添加されることが多いパーム油やカンデリラろうを用いた際のたばこ感の効果を示す。図5から明らかなように、C16の飽和脂肪酸であるパルミチン酸及びC18の飽和脂肪酸であるステアリン酸を用いた際に、最も高いたばこ感を得ることができ、他の単一の脂肪酸では効果が低い結果が得られた。また不飽和脂肪酸は比較的グリセリンへの溶解度が高いため、C18であるものであっても、その効果は、飽和脂肪酸と比較して低いことが明らかとなった。C19の飽和脂肪酸においても効果が確認されたが、C19は天然に存在する量として非常に少なく、使用に際しては製造上の課題が存在する。そのためC16~C18に該当する飽和脂肪酸を添加することで、高いたばこ感を得ることができると考えられる。
一方、C16の飽和脂肪酸であるパルミチン酸に不飽和脂肪酸であるオレイン酸を添加した場合、たばこ感は添加に伴い低下することが分かり、パルミチン酸が割合として50重量%に満たない条件下では、効果が十分発揮されない結果が得られた。パルミチン酸及びステアリン酸を合計で48重量%含む脂質であるパーム油においても同様の傾向が確認でき、パルミチン酸の重量割合が不足しているため効果が十分ではないと考えられる。DMSの測定結果については、たばこ感の値と関連性が認められ、DMSの個数粒子数中央径が大きいほどたばこ感の値は高い結果となった。なかでもC16の飽和脂肪酸であるパルミチン酸及びC18の飽和脂肪酸であるステアリン酸は個数粒子数中央径が大きい結果が得られ、エアロゾルの安定化には有効であることが分かった。
実験例2で用いるたばこロッドとして、エアロゾル安定剤としてC16であるパルミチン酸を用いた。実験例1と同じようにたばこ充填物を巻装し添加するパルミチン酸の量を変更した以外は実験例1と同様の寸法のたばこロッドを作製し、実験例1と同様の官能評価及び測定を行った。
試験水準及び結果を表3及び図7に示す。脂質としてパルミチン酸のみを0.1~1.9重量%添加した試験品では、無添加の試験品に対してたばこ感(シガレット様)が増加した。脂質の添加量が少なすぎる条件では、効果は期待できないが、一方で多量に添加した場合には、エアロゾル物性が過剰に安定化し、本来感じることのできる味/香りや体性感覚が感じられなくなると推定される。そのため、たばこ感(シガレット様)は低下する傾向が得られた。本実施例及び比較例の結果より、最も好ましいC16~18の飽和脂肪酸を含む脂質の添加量の範囲は概ね0.1~1.9重量%であると推察される。
10 たばこロッド部
11 マウスピース部
12 チップペーパー
13 冷却部
14 フィルター部
2、5 電気加熱式デバイス
20、30 電池ユニット
21、31 制御ユニット
22、32 躯体
23 ヒーター部材
33 インダクタ
34 受け入れチャンバ
35 サセプタ
3、4 電気加熱式たばこ製品
Claims (19)
- たばこ材料とエアロゾル生成基材とを含む、非燃焼加熱式たばこ用のたばこ充填物であって、前記たばこ充填物は、脂質を含有するエアロゾル安定剤が添加されており、該エアロゾル安定剤が含有する脂質における、炭素数16~18の飽和脂肪酸の割合が50重量%以上である、非燃焼加熱式たばこ用のたばこ充填物。
- 前記たばこ充填物への前記エアロゾル安定剤の添加量が、たばこ充填物全量の乾燥重量に対して0.1~5.0重量%である、請求項1に記載の非燃焼加熱式たばこ用のたばこ充填物。
- 前記炭素数16~18の飽和脂肪酸のグリセリンへの溶解度が0.13mg/g以下である、請求項1又は2に記載の非燃焼加熱式たばこ用のたばこ充填物。
- 前記炭素数16~18の飽和脂肪酸がパルミチン酸、ステアリン酸、及びこれらの混合物から選ばれる1以上である、請求項1~3のいずれか一項に記載の非燃焼加熱式たばこ用のたばこ充填物。
- 前記たばこ充填物は、たばこ刻みから構成されるたばこ材料の成形体である、請求項1~4のいずれか一項に記載の非燃焼加熱式たばこ用のたばこ充填物。
- 前記たばこ充填物は、たばこシートから構成されるたばこ材料の成形体である、請求項1~4のいずれか一項に記載の非燃焼加熱式たばこ用のたばこ充填物。
- 前記たばこ充填物が、顆粒状のたばこ材料から構成される、請求項1~4のいずれか一項に記載の非燃焼加熱式たばこ用のたばこ充填物。
- 前記エアロゾル安定剤は、前記たばこ材料の成形体の表面に添加されている、請求項5又は6に記載の非燃焼加熱式たばこ用のたばこ充填物。
- 前記エアロゾル安定剤は、前記たばこ材料に均一に添加されている、請求項5~7のいずれか一項に記載の非燃焼加熱式たばこ用のたばこ充填物。
- 請求項1~9のいずれか一項に記載のたばこ充填物からなるたばこロッド部と、該たばこロッド部とは反対側の端部を構成するマウスピース部とを有する非燃焼加熱式たばこ。
- 前記マウスピース部は、冷却部を備える、請求項10に記載の非燃焼加熱式たばこ。
- 請求項7に記載のたばこ充填物と、当該たばこ充填物が収容された容器と、を備える、非燃焼加熱式たばこ。
- 前記たばこロッド部の内部にたばこ充填物を加熱するサセプタを有する、請求項10又は11に記載の非燃焼加熱式たばこ。
- ヒーター部材と、該ヒーター部材の電力源となる電池ユニットと、該ヒーター部材を制御するための制御ユニットとを備える電気加熱式デバイスと、該ヒーター部材に接触するように挿入される、請求項10~12のいずれか一項に記載の非燃焼加熱式たばこと、から構成され、
非燃焼加熱式たばこのたばこロッド部が250~400℃に加熱される、電気加熱式たばこ製品。 - 前記ヒーター部材が円筒形である、請求項14に記載の電気加熱式たばこ製品。
- インダクタと、該インダクタに電力を供給する電池ユニットと、電力の供給を制御する制御ユニットとを備える電気加熱式デバイスと、該インダクタに近接するように挿入される、請求項13に記載の非燃焼加熱式たばこと、から構成され、
非燃焼加熱式たばこのたばこロッド部が250~400℃に加熱される、電気加熱式たばこ製品。 - 脂質を含有し、該脂質における炭素数16~18の飽和脂肪酸の割合が50重量%以上であるエアロゾル安定剤を、成形前又は成形後のたばこ材料に添加する工程を含む、たばこ充填物の製造方法。
- 前記成形前のたばこ材料にエアロゾル安定剤を添加する工程が、前記たばこ材料と前記エアロゾル安定剤を混合する工程である、請求項17に記載のたばこ充填物の製造方法。
- 前記成形後のたばこ材料にエアロゾル安定剤を添加する工程が、前記成形後のたばこ材料に前記エアロゾル安定剤を噴霧又は塗布する工程である、請求項17に記載のたばこ充填物の製造方法。
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