RU2793877C1 - Tobacco filler for heated tobacco products, heated tobacco products and electrically heated tobacco products - Google Patents

Abstract

FIELD: tobacco products.

SUBSTANCE: invention relates to a tobacco filler for tobacco products heated without burning. The tobacco filler contains a tobacco material and an aerosol-forming substrate, said tobacco filler has a lipid-containing aerosol stabilizer. The proportion of saturated fatty acids having 16-18 carbon atoms in the lipids contained in the aerosol stabilizer is 50 wt.% and more. The invention also relates to a non-burning heated tobacco product, an electrically heated tobacco product and a method for producing a tobacco filler.

EFFECT: tobacco filler is capable of effectively delivering the flavoring component of the smoke contained in the tobacco filler to the consumer.

19 cl, 7 dwg, 3 tbl

Description

Technical field

The present invention relates to tobacco filler for non-burning heated tobacco products, non-burning heated tobacco products, and electrically heated tobacco products.

State of the art

In electrically heated tobacco products incorporating tobacco filler for non-burn heated tobacco products, it is important to increase the level of satisfaction during use. In particular, in an electrically heated tobacco product in which the flavor component of the smoke contained in the tobacco filler is vaporized along with the aerosol source material to deliver the component to the consumer's mouth, it is desirable to obtain a smoke flavor close to that of conventional cigarettes. A method for adding acid to a filler in such a non-burning heated smoking article has been reported (see, for example, Patent Document 1).

List of referenced documents

Patent Document Patent Document 1: International Patent Application No. 2017/203686

Brief description of the invention

Technical task

Patent Document 1 discloses that an acid having a first dissociation constant and a boiling point within a certain range is added to a tobacco filler to reduce salt formation with a smoke flavor contained in the tobacco filler and to reduce chemical odor. The invention described in Patent Document 1 uses an acid-base reaction.

When using an electrically heated tobacco product, when the smoke flavor contained in the tobacco filler is vaporized along with the aerosol source material, the smoke flavor is transferred to the aerosol particles resulting from cooling condensation. Accordingly, it has been found to be important for stable delivery of the flavor component of the smoke to the user's oral cavity that the resulting aerosol particles are stably present without evaporation until they are delivered to the user's oral cavity. The component composition of aerosol particle surfaces contributes greatly to the physical properties of aerosol particles, and coating the surface of aerosol particles with a low volatility component is considered effective in stabilizing the aerosol particles. It has been found to be preferable to add a certain fatty acid to the tobacco excipient, which can be locally present on the surface of aerosol particles formed from a hydrophilic substance such as water or glycerin, so that the resulting aerosol particles are stably present without evaporation until they are delivered to oral cavity.

In view of this, it is an object of the present invention to provide a tobacco excipient for non-burning heated tobacco products that is capable of effectively delivering a smoke flavor component contained in the tobacco excipient and the like to a consumer.

Solution

As a result of extensive research, it has been found that in a tobacco filler for non-burning heated tobacco products that contains a tobacco material and an aerosol source material, when the tobacco filler contains an aerosol stabilizer containing a saturated fatty acid, and the proportion of saturated fatty acid having from 16 to 18 carbon atoms in lipids contained in the aerosol stabilizer is 50 wt. % or more, the above goal can be achieved.

More specifically, the present invention is as follows.

[1] A tobacco filler for non-burning heated tobacco products, comprising a tobacco material and an aerosol source material, wherein an aerosol stabilizer containing lipids is added to the tobacco filler, and a proportion of saturated fatty acid having from 16 to 18 carbon atoms in lipids contained in the aerosol stabilizer, is 50 wt. % or more.

[2] The tobacco filler for non-burning heated tobacco products according to [1], wherein the amount of the aerosol stabilizer added to the tobacco filler is from 0.1 mass. % to 5.0 wt. % relative to the dry weight of the total amount of tobacco filler.

[3] The tobacco excipient for non-burning heated tobacco products according to [1] or [2], wherein the solubility of a saturated fatty acid having 16 to 18 carbon atoms in glycerin is 0.13 mg/g or less.

[4] The tobacco excipient for non-burning heated tobacco products according to any one of [1] to [3], wherein the saturated fatty acid having 16 to 18 carbon atoms is at least one acid selected from palmitic acid, stearic acids and their mixtures.

[5] The tobacco filler for non-burning heated tobacco products according to any one of [1] to [4], which is a molded body of tobacco material composed of tobacco chips.

[6] The tobacco filler for non-burning heated tobacco products according to any one of [1] to [4], which is a molded body of tobacco material composed of a tobacco sheet.

[7] The tobacco filler for non-burning heated tobacco products according to any one of [1] to [4], which is composed of granular tobacco material.

[8] The tobacco excipient for non-burning heated tobacco products according to [5] or [6], in which an aerosol stabilizer is added to the surface of a shaped body of the tobacco material.

[9] The tobacco filler for non-burning heated tobacco products according to any one of [5] to [7], wherein the aerosol stabilizer is uniformly added to the tobacco material.

[10] A non-burning heated tobacco product, including a tobacco rod formed from a tobacco filler according to any one of [1] to [9], and a mouthpiece constituting an end portion opposite the tobacco rod.

[11] The non-burning heated tobacco product according to [10], wherein the mouthpiece includes a cooling portion.

[12] A non-burning heated tobacco product comprising a tobacco filler according to [7] and a container containing the tobacco filler.

[13] A non-burning heated tobacco product according to [10] or [11] having a current collector inside the tobacco rod that heats the tobacco filler.

[14] An electrically heated tobacco product, comprising an electric heating device including a heating element, a battery pack that serves as a power source for the heating element, and a control unit for controlling the heating element, and a non-burning heated tobacco product according to any one of [10]-[ 12], wherein the non-burning heated tobacco product is designed to be inserted so that it is in contact with the heating element,

wherein the tobacco rod of the non-burning heated tobacco product is heated to a temperature of 250°C to 400°C.

[15] The electrically heated tobacco product according to [14], in which the heating element has a cylindrical shape.

[16] An electrically heated tobacco product, including an electric heating device comprising an inductor, a battery pack that supplies electricity to the inductor, and a control unit that controls the supply of electricity, and a non-burning heated tobacco product according to [13], wherein the non-burning heated tobacco product made with the possibility of insertion so that it is close to the inductor,

wherein the tobacco rod of the non-burning heated tobacco product is heated to a temperature of 250°C to 400°C.

[17] A method for producing a tobacco excipient, comprising the step of adding an aerosol stabilizer, which contains lipids, and in which the proportion of saturated fatty acid having from 16 to 18 carbon atoms, in lipids, to the tobacco material before molding or after molding is 50 wt. % or more.

[18] The method for producing tobacco filler according to [17], wherein the step of adding the aerosol stabilizer to the tobacco material before molding is the step of mixing the tobacco material and the aerosol stabilizer.

[19] The method for producing tobacco filler according to [17], wherein the step of adding the aerosol stabilizer to the tobacco material after molding is the step of spraying or applying the aerosol stabilizer to the tobacco material after molding.

Advantageous Effects of the Invention

The present invention can provide a tobacco filler for non-burning heated tobacco products that is capable of effectively delivering a smoke flavor component contained in the tobacco filler and the like to a consumer.

Brief description of the drawings

[Fig. 1] Fig. 1 is a schematic view illustrating one embodiment of a non-burning heated tobacco product.

[Fig. 2] Fig. 2 is a schematic view illustrating an embodiment in which the outer peripheral surface of the tobacco rod is heated, which is one embodiment of an electrically heated tobacco product.

[Fig. 3] Fig. 3 is a schematic view illustrating an embodiment in which the inside of a tobacco rod is heated, which is one embodiment of an electrically heated tobacco product.

[Fig. 4] Fig. 4 is a schematic view illustrating an embodiment in which the tobacco rod is heated by IH, which is one embodiment of an electrically heated tobacco product.

[Fig. 5] Fig. 5 is a graph showing the relationship between the solubility of each lipid in glycerol and smoking sensation.

[Fig.6] Fig. 6 is a graph showing the relationship between the mass fraction of C16 and C18 saturated fatty acids in each lipid and smoking sensation.

[Fig.7] Fig. 7 is a graph showing the relationship between the amount of added lipid (palmitic acid) and smoking sensation.

Description of embodiments

The present invention is described in detail below with reference to the embodiments, illustrations, and the like. The present invention is not limited to the following embodiments, illustrations, and the like, and any modification can be made without departing from the gist of the present invention.

The term "non-burning heated tobacco product" as used herein refers to tobacco capable of delivering the flavor component of the smoke contained in the tobacco material to the user's mouth by heating without burning, unlike conventional cigarettes.

The term "tobacco starting material" as used herein refers to starting material that is not used as a tobacco excipient per se, such as the lamina, midrib or stalk of tobacco leaves. "Tobacco material" refers to the material constituting the tobacco excipient and is an article, such as "tobacco leaf", "tobacco granule", "tobacco chip" or "tobacco powder", described below, made using "tobacco starting material" .

Tobacco filler for non-burning heated tobacco products The tobacco filler for non-burning heated tobacco products according to one embodiment of the present invention comprises a tobacco material and an aerosol source material, wherein an aerosol stabilizer containing lipids and a proportion of saturated fatty acid are added to the tobacco filler, having from 16 to 18 carbon atoms, in the lipids contained in the aerosol stabilizer, is 50 wt. % or more. The object of the present invention can be achieved by including a saturated fatty acid containing from 16 to 18 carbon atoms in the indicated proportion.

The proportion of saturated fatty acid having from 16 to 18 carbon atoms in the lipid is preferably 80 wt. % or more, more preferably 90 wt. % or more, and particularly preferably 99 wt. % or more. Lipids other than saturated fatty acids having 16 to 18 carbon atoms are not particularly limited. However, it is preferable to minimize the content of lipids other than saturated fatty acids containing from 16 to 18 carbon atoms.

The solubility of a saturated fatty acid containing from 16 to 18 carbon atoms in water or glycerol, which mainly forms an aerosol, is extremely low, and is believed to affect the coating of aerosol particles. However, if lipids having high solubility are added to the mixture in a predetermined amount or more, the initial coating effect achieved by a saturated fatty acid having 16 to 18 carbon atoms may not be sufficiently achieved. Therefore, the solubility of each lipid and the proportion of lipids having low solubility and lipids having high solubility in the case of a mixture of a plurality of lipids are important as indicators for evaluating the effect.

An "aerosol stabilizer" as used herein is a substance for maintaining the stability in air of aerosol particles generated by non-burning heated tobacco products, and it contains specific lipids as described above.

Although the saturated fatty acid aerosol stabilizer may contain other components in addition to lipids, the lipid content of the aerosol stabilizer is preferably 90 wt. % or more, more preferably 95 wt. % or more, and particularly preferably 99 wt. % or more.

The lipid solubility in glycerol is 0.13 mg/g or less, preferably 0.12 mg/g or less, and more preferably 0.11 mg/g. On the other hand, the solubility may be 0.01 mg/g or more. Here, "solubility in glycerol" is defined as described below.

Method for Measuring Solubility in Glycerol The solubility in glycerol is most preferably measured by the method of quantitative determination of a fatty acid dissolved in 2 g of glycerol. In particular, after adding an excess amount of fatty acid to glycerol, the mixture is separated into two layers, for example, by standing at ordinary temperature for 24 hours or more or separated by centrifugation, an aliquot of 100 mg of glycerol is taken and transferred and dissolved in 2 ml of methanol, and the amount of fatty acid dissolved in glycerol is quantified using a gas chromatograph - flame ionization detector (GC-FID) or a gas chromatograph - mass spectrometer (GC-MS).

Examples of saturated fatty acids having 16 to 18 carbon atoms include palmitic acid, margaric acid and stearic acid. Of these, palmitic acid, stearic acid and a mixture thereof are preferred.

You can use a mixture of saturated fatty acids containing from 16 to 18 carbon atoms, or each of the saturated fatty acids can be used separately. For example, it is also preferable to use palmitic acid and stearic acid separately.

You can use lipids containing only saturated fatty acids containing from 16 to 18 carbon atoms, and an aerosol stabilizer containing only saturated fatty acids containing from 16 to 18 carbon atoms.

The amount of aerosol stabilizer added to the tobacco filler may be 0.1 wt. % or more and 5.0 wt. % or less, more preferably 0.5 wt. % or more and 2.0 wt. % or less, more preferably 0.5 wt. % or more and 1.5 wt. % or less, and particularly preferably 0.75 wt. % or more and 1.25 wt. % or less relative to the dry weight of the total amount of tobacco filler. In such an added amount, the aerosol generated during use can be stably present and have aerosol physical properties with a stability close to that of cigarettes, and thus a smoke flavor similar to that of cigarettes is obtained.

The amount of saturated fatty acids containing from 16 to 18 carbon atoms added to the tobacco filler is preferably 0.1 wt. % or more and 2.0 wt. % or less, more preferably 0.5 wt. % or more and 1.5 wt. % or less, and particularly preferably 0.75 wt. % or more and 1.25 wt. % or less relative to the dry weight of the total amount of tobacco filler. The amount of aerosol stabilizer added and the amount of saturated fatty acids having 16 to 18 carbon atoms added may be in the same range. This means that the aerosol stabilizer may be composed of lipids, and all lipids may be saturated fatty acids having 16 to 18 carbon atoms.

Specific embodiment of tobacco filler

Specific embodiments of the tobacco excipient for non-burning heated tobacco products according to the embodiments of the present invention include a shaped base composed of tobacco material including tobacco chips (hereinafter also referred to as the first tobacco excipient), a shaped base of tobacco material consisting of a tobacco leaf described below. (hereinafter also referred to as the second tobacco filler), and a tobacco filler consisting of granules prepared using tobacco starting material (hereinafter the third tobacco filler).

Each of these molded bodies may be rod-shaped.

In the present invention, the longitudinal direction of the non-burning heated tobacco product is the direction indicated by h in FIG. 1. When the non-burning heated tobacco product is rod-shaped, the longitudinal direction of the non-burning heated tobacco product can be considered the same as the longitudinal direction of the tobacco rod. The tobacco filler for non-burning heated tobacco products according to the present invention preferably has a columnar shape that satisfies a shape having an aspect ratio of 1 or more, wherein the aspect ratio is determined as follows.

Aspect ratio = h/w,

where w is the width of the bottom surface of the columnar body, h is the height of the columnar body, preferably h≥w. However, in the present invention, the longitudinal direction is defined as the direction indicated by h as described above. Accordingly, even when w≥h, the direction indicated by h is called the longitudinal direction for convenience. The shape of the bottom surface is not limited and may be, for example, polygonal, rounded polygonal, circular, or elliptical. The width w is the diameter when the bottom surface is circular, the major axis when the bottom surface is elliptical, and the diameter of the circumscribed circle or the major axis of the circumscribed ellipse when the bottom surface is polygonal or rounded polygonal. For example, in the embodiment shown in FIG. 1, since the bottom surface is round, its diameter can be determined. The diameter is the width w and the length orthogonal to the width w is the height h. The height h of the tobacco filler constituting the tobacco rod is preferably about 12 mm or more and about 70 mm or less, and its width w is preferably about 4 mm or more and about 9 mm or less.

First, the first filler is described. The tobacco material constituting the first filler is not particularly limited, and a material obtained by processing a well-known tobacco raw material such as lamina or midrib through a process such as grinding or grinding can be used. The material may be a material obtained by grinding dried tobacco leaves to an average particle size of about 20 µm or more and about 200 µm or less to obtain a homogeneous product, processing the homogeneous product into a sheet (hereinafter also referred to simply as a uniform sheet), and crushing the sheet. The width of the tobacco crumb is preferably about 0.5 mm or more and about 2.0 mm or less in terms of tobacco rod formation. In the case of a tobacco rod having a circumference of 22 mm and a length of 20 mm, the content of tobacco filler in the formed tobacco rod may be 200 mg/rod or more and 800 mg/rod or less, and preferably 250 mg/rod or more and 600 mg/rod or less. Different types of tobacco can be used for the tobacco leaves used for the preparation of tobacco chips and uniform leaf. Examples thereof include fire-cured tobacco, burley tobacco, oriental tobacco, house tobacco and other leaves such as Nicotiana tabacum tobacco and Nicotiana rustica tobacco and mixtures thereof. For mixtures, the above different types of leaves can be mixed in a suitable way to provide the desired taste. Detailed information on types of tobacco is disclosed in "Tabako-no-Jiten (Encyclopedia of Tobacco) of the Center for Tobacco Academic Research, March 31, 2009". For the uniform sheet manufacturing method, i.e., the method for pulverizing tobacco leaves and processing the pulverized leaves into a uniform sheet, there are many known methods. The first method is a method including manufacturing a sheet using a paper manufacturing process. The second method is a method including mixing an appropriate solvent such as water with crushed tobacco leaves until homogeneous, then pouring the resulting homogeneous mixture onto a metal sheet or metal sheet strip, and drying the homogeneous mixture to obtain a cast sheet (slip sheet). The third method is a method including mixing an appropriate solvent such as water with pulverized tobacco leaves to prepare a homogeneous mixture, and extruding the homogeneous mixture into a sheet to make a rolled sheet. Detailed information on uniform leaf types is disclosed in "Tabako-no-Jiten (Encyclopedia of Tobacco) of the Center for Tobacco Academic Research, March 31, 2009".

The moisture content of the tobacco filler may be 10 wt. % or more and 15 wt. % or less, and preferably 11 wt. % or more and 13 wt. % or less relative to the total amount of tobacco filler. This moisture content reduces the appearance of stains on wrapping paper and provides good workability in the production of tobacco rod.

The tobacco chips contained in the first tobacco filler may be of any size and may be prepared in any manner. For example, dried tobacco leaves ground to a width of 0.5 mm or more and 2.0 mm or less can be used.

In the case of using a uniform sheet pulverized product, the pulverized product can be obtained by pulverizing dried tobacco leaves to an average particle size of about 20 µm or more and about 200 µm or less to obtain a uniform product, processing the uniform product into a sheet, and pulverizing the sheet to a width of 0 .5 mm or more and 2.0 mm or less.

The first tobacco filler contains an aerosol source material that forms an aerosol. The type of aerosol source material is not particularly limited, and substances extracted from various natural products and/or components of substances can be selected depending on the application. Examples of the aerosol source material include glycerin, propylene glycol, triacetin, 1,3-butanediol, and mixtures thereof.

The content of the aerosol source material in the first tobacco filler is not particularly limited. From the point of view of sufficient aerosol formation and giving a good smoke flavor, the content is usually 5 wt. % or more, preferably 10 wt. % or more, and usually 50 wt. % or less, preferably 15 wt. % or more and 25 wt. % or less relative to the total amount of tobacco filler.

The first tobacco filler may contain flavor. The flavor type is not particularly limited. In terms of imparting a good smoke flavor, examples of flavors include acetanisole, acetophenone, acetylpyrazine, 2-acetylthiazole, alfalfa extract, amyl alcohol, amyl butyrate, trans-anethole, star anise oil, apple juice, balsam of peru oil, beeswax absolute, benzaldehyde, benzoin resinoid, benzyl alcohol, benzyl benzoate, benzyl phenylacetate, benzyl propionate, 2,3-butanedione, 2-butanol, butyl butyrate, butyric acid, caramel, cardamom oil, carob absolute, β-carotene, carrot juice, L-carvone, β-caryophyllene , Cassia Bark Oil, Cedarwood Oil, Celery Seed Oil, Chamomile Oil, Cinnamaldehyde, Cinnamic Acid, Cinnamon Alcohol, Cinnamate Cinnamate, Citronella Oil, DL-Citronellol, Clary Sage Extract, Cocoa, Coffee, Cognac Oil, Coriander Oil, Cuminaldehyde , davana oil, δ-decalactone, γ-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-dimethylpyrazine, 2,6-dimethylpyrazine, ethyl-2-methylbutyrate, ethyl acetate, ethylbutyrate, ethylhexanoate, ethylisovalerate, ethyl lactate, ethyl laurate, ethyl levulinate, ethyl maltol, ethyl octanoate, ethyl oleate, ethyl palmitate, ethyl phenyl acetate, ethyl propionate, ethyl stearate, ethyl valerate, ethyl vanillin, ethyl vanillin glucoside, 2-ethyl-3 (5 or 6)-dimethylpyrazine, 5-ethyl-3-hydroxy-4-methyl-2(5H)- furanone, 2-ethyl-3-methylpyrazine, eucalyptol, fenugreek absolute, geneta absolute, gentian root infusion, geraniol, geranyl acetate, grape juice, guaiacol, guava extract, γ-heptalactone, γ-hexalactone, hexanoic acid, cis-3-hexene -1-ol, hexyl acetate, hexyl alcohol, hexylphenyl acetate, honey, 4-hydroxy-3-pentenoic acid lactone, 4-hydroxy-4-(3-hydroxy-1-butenyl)-3,5,5-trimethyl-2- cyclohexen-1-one, 4-(p-hydroxyphenyl)-2-butanone, sodium 4-hydroxyundecanoate, immortelle absolute, β-ionone, isoamyl acetate, isoamyl butyrate, isoamylphenyl acetate, isobutyl acetate, isobutylphenyl acetate, jasmine absolute, kola nut tincture, labdanum oil , terpene-free lemon oil, licorice extract, linalool, linalyl acetate, lovage root oil, maltol, maple syrup, menthol, menthone, L-menthylacetate, p-methoxybenzaldehyde, methyl-2-pyrrolyl ketone, methyl anthranilate, methyl phenylacetate, methyl alicylate, 4'-methylacetophenone , methylcyclopentenolone, 3-methylvaleric acid, mimosa absolute, molasses, myristic acid, nerol, nerolidol, γ-nonalactone, nutmeg oil, 5-octalactone, octanal, octanoic acid, orange blossom oil, orange oil, orris root oil, palmitic acid , ω-Pentadecalactone, Peppermint Oil, Paraguayan Petitgrain Oil, Phenethyl Alcohol, Phenethyl Phenyl Acetate, Phenylacetic Acid, Piperonal, Plum Extract, Propenyl Guatol, Propyl Acetate, 3-Propylidene Phthalide, Plum Juice, Pyruvic Acid, Raisin Extract, Rose Oil, Rum, Sage Oil , sandalwood oil, spearmint oil, styrax absolute, calendula oil, tea distillate, α-terpineol, terpinyl acetate, 5,6,7,8-tetrahydroquinoxaline, 1,5,5,9-tetramethyl-13-oxacyclo(8.3. 0.0(4.9)) tridecane, 2,3,5,6-tetramethylpyrazine, thyme oil, tomato extract, 2-tridecanone, triethyl citrate, 4-(2,6,6-trimethyl-1-cyclohexenyl)2-butene-4- he, 2,6,6-trimethyl-2-cyclohexen-1,4-dione, 4-(2,6,6-trimethyl-1,3-cyclohexadienyl)2-buten-4-one, 2,3,5 -trimethylpyrazine, γ-undecalactone, γ-valerolactone, vanilla extract, vanillin, veratraldehyde, violet leaf absolute, N-ethyl-p-menthane-3-carboxamide (WS-3) and ethyl-2-(p-menthane-3- carboxamide)acetate (WS-5). Menthol is particularly preferred. These flavors can be used alone or in combination of two or more of them.

The flavoring content of the first tobacco filler is not particularly limited. From the point of view of imparting a good smoke flavor, the content is usually 10,000 ppm or more, preferably 20,000 ppm or more, more preferably 25,000 ppm or more, and usually 50,000 ppm or less, preferably 40,000 ppm or less and more preferably 33,000 ppm or less.

The filling density for the first tobacco filler is not particularly limited. From the viewpoint of providing the characteristics of a non-burning heated tobacco product and imparting a good smoke flavor, the filling density is usually 250 mg/cm ³ or more, preferably 320 mg/cm 3 or more, and usually 800 mg/cm ^{3 or} less, preferably 600 mg/cm ³ or less.

The first tobacco filler described above is wrapped in wrapping paper so that it is located inside, thus forming a tobacco rod. For a tobacco filler, the tobacco material that constitutes the tobacco filler may be randomly arranged, or the tobacco material may be arranged in the longitudinal direction of the tobacco rod, ie in the form of a thread.

The second tobacco filler consists of at least one tobacco leaf. If the second tobacco filler is formed by two or more tobacco sheets, the tobacco sheets are arranged concentrically. In the present invention, concentric arrangement means that all of the tobacco sheets are arranged such that their centers are in substantially the same position. The sheet in the present invention refers to a form having a pair of substantially parallel main surfaces and side surfaces. The sheet is preferably produced in a paper manufacturing process. Examples of the second filler include a shaped body filler obtained by winding a single tobacco sheet in a direction orthogonal to the longitudinal direction of a non-burning heated tobacco product and a shaped body filler obtained by concentrically winding a plurality of tobacco sheets. In addition, the second filler may be a so-called assembled sheet, which forms a filler obtained by repeatedly folding one or more tobacco sheets parallel to the longitudinal direction of the non-burning heated tobacco product.

Examples of the sheet base material include tobacco materials such as tobacco powders. In the present invention, the sheet base material is preferably a tobacco material. The tobacco sheet is preferably produced by depositing on the base material sheet, which consists of tobacco material, a component that can provide flavor as needed. Tobacco leaf forms an aerosol when heated. As an aerosol source material, an aerosol source such as a polyol, such as glycerol, propylene glycol, or 1,3-butanediol, is added. The amount of aerosol source material added is preferably 5 wt. % or more and 50 wt. % or less, more preferably 15 wt. % or more and 25 wt. % or less relative to the dry weight of the tobacco leaf.

The following describes a tobacco sheet serving as a material before forming it into a molded body.

The tobacco sheet may be appropriately manufactured by a well-known method such as papermaking, slip casting or rolling. You can also use a unified sheet, which is described for the first tobacco filler.

In the case of making paper, the tobacco sheet may be made by a method including the following steps. 1) Dried tobacco leaves are roughly ground and extracted with water to separate the leaves into an aqueous extract and a residue. 2) The aqueous extract is concentrated by drying under reduced pressure. 3) Pulp is added to the residue, and the mixture is processed into fibers with a refiner and then formed into a sheet. 4) An aqueous extract concentrate is added to the formed sheet and dried to obtain a tobacco sheet. In this case, the step of removing some components such as nitrosamines can be performed (see Japanese Unexamined Patent Application Publication (PCT Application Translation) No. 2004-510422).

In the case of the slip method, the tobacco leaf can be produced by a method comprising the following steps. 1) Water, pulp and binder are mixed with crushed tobacco leaves. 2) The mixture is spread (poured) in a thin layer and dried. In this case, the step of removing some components, such as nitrosamines, is carried out by irradiating the suspension prepared by mixing water, pulp and binder with crushed tobacco leaves with ultraviolet or X-rays.

Alternatively, as described in International Application No. 2014/104078, a nonwoven-like tobacco sheet obtained by a process comprising the following steps can be used. 1) Powdered or granulated tobacco leaves are mixed with a binder. 2) The mixture is placed between the non-woven fabrics. 3) The resultant laminate is shaped by fusion thermal bonding to form a tobacco sheet similar to a non-woven fabric.

The type of original tobacco leaves used in the methods described above may be the same as described for the first filler.

The composition of the tobacco leaf is not particularly limited, and for example, the content of tobacco raw materials (tobacco leaves) is preferably 50 wt. % or more and 95 wt. % or less relative to the total weight of the tobacco leaf. The tobacco leaf may contain a binder, and examples of such a binder include guar gum, xanthan gum, CMC (carboxymethylcellulose), and CMC-Na (carboxymethylcellulose sodium salt). The amount of binder is preferably 1 wt. % or more and 20 wt. % or less relative to the total weight of the tobacco leaf. The tobacco leaf may additionally contain other additives. Examples of additives include fillers such as pulp. The present invention uses a variety of tobacco sheets. All 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.

When the second tobacco filler is formed from a single tobacco sheet, the second tobacco filler may be formed by inserting the tobacco sheet into the winding tube and forming the tobacco sheet by overlapping winding. When the second tobacco filler is formed from a plurality of tobacco sheets, the second tobacco filler can be obtained by providing a plurality of tobacco sheets having different widths, producing a laminate from the tobacco sheets such that its width decreases from bottom to top, inserting the laminate into a winding tube, and forming the laminate. material by winding. In this production method, one or more tobacco sheets extend in the longitudinal direction and are arranged concentrically around the longitudinal axis.

In addition, a through hole is formed between the longitudinal axis and the innermost tobacco sheet, extending in the form of a hole in the longitudinal direction.

In this production method, the preparation is preferably carried out in such a way that a non-contact part is formed between adjacent tobacco sheets after being formed by winding.

In each of the cases where the molded body is formed by overlapping winding of one tobacco sheet and the case where the molded body is composed of a plurality of tobacco sheets, if there is a non-contact portion (gap) between the tobacco sheets where the tobacco sheets do not touch each other, there may be the passage of flavorant is provided to improve the delivery efficiency of the flavor component. At the same time, since heat from the heater can be transferred to the outer tobacco sheets through the contact portion between the tobacco sheets, high heat transfer efficiency can be achieved.

To provide a non-contact portion between the tobacco sheets where the tobacco sheets do not touch each other, for example, embossed tobacco sheets can be used or, in the case of a plurality of tobacco sheets, a layered material (molded body) can be obtained by laminating without gluing all adjacent surfaces. tobacco sheets together, laminating with adjacent tobacco sheets partially bonded together, or laminating with adjacent tobacco sheets fully or partially lightly bonded together such that they are separated after winding formation.

In the manufacture of a tobacco rod including wrapping paper, the wrapping paper may be positioned at the bottom of the laminate (molded body).

Alternatively, the opening can be formed by forming the second tobacco filler with a cylindrical ingot, such as a core, placed on top of the laminate (molded body) and then removing the ingot.

The thickness of each tobacco sheet is not particularly limited, and from the viewpoint of a balance between heat transfer efficiency and strength, the thickness is preferably 200 µm or more and 600 µm or less. The thickness of the tobacco sheets may be the same or different.

The number of tobacco sheets constituting the second tobacco filler is not particularly limited as long as the number is one or more and is, for example, one, two, three, four, five, or six.

The third tobacco filler consists of tobacco granules.

The starting materials for the third tobacco filler are not particularly limited, but may be (a) tobacco material, (b) moisture, (c) at least one pH adjuster selected from the group consisting of potassium carbonate and sodium hydrogen carbonate, (d ) at least one binder selected from the group consisting of pullulan and hydroxypropyl cellulose, and (e) an aerosol source material.

The tobacco material (component (a)) contained in the third tobacco filler includes shredded tobacco leaves, shredded tobacco sheets, and the like. Types of tobacco include burley tobacco, fire-cured tobacco, and oriental tobacco. The tobacco material is preferably ground to a size of 200 µm and 300 µm or less.

The mixture of starting materials of the third tobacco filler usually contains tobacco material in the amount of 20 wt. % or more and 80 wt. % or less.

The moisture (component (b)) contained in the third tobacco filler is a component for maintaining the integrity of the tobacco granules.

The mixture of raw materials of the third tobacco filler usually contains moisture in the amount of 3 wt. % or more and 13 wt. % or less. The third tobacco filler may contain moisture, typically in such an amount that the weight loss on drying will be 5 wt. % or more and 17 wt. % or less. Loss on drying refers to the change in weight before and after the sample is dried, the drying being carried out in such a way that a portion of the sample is taken for measurement and the sample is completely dried (e.g. dried at a constant temperature (105°C) for 15 minutes) by evaporating all the moisture in the sample. In particular, weight loss on drying refers to the ratio (wt. %) of the sum of the amount of moisture contained in the sample and the amount of volatile component evaporated under the above drying conditions, to the weight of the sample. That is, the weight loss on drying (mass %) can be expressed by the following equation. Loss on drying (wt %)={(sample dry weight) - (sample dry weight)} × 100/sample dry weight

The pH adjuster (component (c)) contained in the third tobacco filler consists of potassium carbonate, sodium hydrogen carbonate or a mixture thereof. The pH adjuster adjusts the pH of the third tobacco filler to the alkaline side to facilitate the release of the smoke flavor component contained in the third tobacco filler from the tobacco granules, thereby providing a smoke flavor that can be satisfactory to the user.

The mixture of starting materials of the third tobacco filler may contain a pH regulator, usually in an amount of from 5 wt. % or more and up to 20 wt. % or less.

The binder (component (d)) contained in the third tobacco filler is a component that binds together the components of the tobacco granules to maintain the integrity of the tobacco granules. The binder consists of pullulan, hydroxypropyl cellulose (HPC), or a mixture thereof.

The mixture of raw materials of the third tobacco filler may contain a binder, usually in an amount of from 0.5 wt. % or more up to 15 wt. % or less.

The aerosol source material (component (e)) contained in the third tobacco filler is an aerosol-forming component. The aerosol source material consists of a polyhydric alcohol, and examples of the polyhydric alcohol may include glycerol, propylene glycol, sorbitol, xylitol, and erythritol. These polyhydric alcohols can be used alone or in combination of two or more of them.

The content of the aerosol source material in the mixture of raw materials of the third tobacco filler may be 5 wt. % or more and 15 wt. % or less.

Examples of additional components include (f) a flavor material (solid or liquid) other than the flavor components of the smoke. Examples of such flavoring materials include sugar (such as sucrose and fructose), cocoa powder, carob powder, coriander powder, licorice powder, orange peel powder, rosehip powder, chamomile flower powder, lemon verbena powder, peppermint powder, tea leaf powder. , spearmint powder, black tea powder and menthol.

The mixture of starting materials of the third tobacco filler may contain flavoring material in an amount usually from 0.5 wt. % or more up to 30 wt. % or less. The flavoring material can be added to components (a), (b), (c), (d) and (e) by mixing directly with these components, or it can be added to these components by being placed in a well-known clathrate host compound such as cyclodextrin, to obtain a clathrate compound, and then mixing the clathrate compound with the above components.

When the third tobacco filler consists of components (a), (b), (c), (d) and (e), the mixture of raw materials of the third tobacco filler may contain component (a) usually in an amount of about 33 wt. % or more (and about 90 wt. % or less).

The third tobacco filler is obtained by mixing components (a), (c), (d) and (e) and possibly component (f), adding component (b) to the resulting mixture and kneading the mixture, granulating the resulting kneaded product using a wet granulator. extrusion (in the form of long columns), and then grinding the granules to the form of short columns or spherical shape. The average particle size (D50) of the resulting 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 more preferably 0.2 mm or more, and 0.8 mm or less.

In extrusion granulation, the kneaded product is preferably extruded at a pressure of 2 kN or more at ambient temperature. As a result of this high pressure extrusion, the temperature of the kneaded product at the outlet of the extrusion granulator quickly and instantly rises from ambient temperature to, for example, 90° C. or higher and 100° C. or lower, and moisture and volatile components evaporate by 2 wt. % or more and 4 wt. % or less. Accordingly, the water added to the mixture to prepare the kneaded product can be used in an amount that exceeds the required amount of moisture in the tobacco granules that are the final product by the amount of evaporation.

Tobacco granules obtained by extrusion granulation, if necessary, can be further dried to control moisture. For example, if the weight loss on drying of extrusion pelletized tobacco beads is measured and the weight loss is higher than the desired weight loss on drying (e.g., 5 wt.% or more and 17 wt.% or less), the tobacco beads can be further dried to achieve the required weight loss on drying. The drying conditions (temperature and time) to achieve the desired drying weight loss can be set based on the desired drying conditions (temperature and time) that are necessary to reduce the drying weight loss by a given amount.

The third tobacco filler may only consist of the tobacco granules described above, but may additionally contain additional tobacco material. Additional tobacco material usually consists of crumbs or fine powder from tobacco leaves. Additional tobacco material can be used as a mixture with tobacco granules according to an embodiment of the present invention.

Method for producing tobacco filler The method for producing tobacco filler according to an embodiment of the present invention relates to a method for producing any of the first to third tobacco fillers described above.

The method for manufacturing a tobacco excipient according to an embodiment of the present invention includes, in each of the cases of the first to third tobacco excipients, the step of adding to the tobacco material before or after forming an aerosol stabilizer that contains lipids and in which the proportion of saturated fatty acid having from 16 to 18 carbon atoms in lipids is 50 wt. % or more.

When an aerosol stabilizer is added to the tobacco material prior to molding, the aerosol stabilizer may be uniformly added to the tobacco material depending on the form of addition.

In the case of the first and third tobacco excipients, the aerosol stabilizer can be evenly added to the tobacco material prior to molding by mixing the aerosol stabilizer with other material such as ground tobacco leaves, crumbs or ground tobacco leaf product to form the tobacco filler.

In the case of the second tobacco excipient, the aerosol stabilizer can be added to the tobacco material by mixing the aerosol stabilizer with the tobacco material (such as shredded tobacco leaves) used as raw materials in the manufacture of the tobacco leaf. Particularly in the case of the papermaking described above, the aerosol stabilizer can be added to the tobacco material prior to shaping by mixing the aerosol stabilizer with the aqueous extract concentrate in step (4) and adding the mixture to the formed sheet.

In the case of the slip method described above, in addition to water, pulp, binder and ground tobacco leaves, the aerosol stabilizer can be uniformly added to the tobacco material before molding in step (1).

In the case of producing a tobacco sheet like the nonwoven web described above, the aerosol stabilizer can be evenly added to the tobacco material before molding by further adding an aerosol stabilizer to the mixture when powdered or granular tobacco leaves are mixed with the binder in step (1).

Uniform addition of the aerosol stabilizer to the tobacco material prior to molding is preferred because the flavor of the smoke is stabilized.

When an aerosol stabilizer is added to the tobacco material after molding, the aerosol stabilizer can be added to the surface of the tobacco material. An exemplary method includes spraying or applying an aerosol stabilizer to the surface of the molded mass of tobacco material by appropriate means. Adding an aerosol stabilizer to the surface of the tobacco material is preferable because the aerosol stabilizer can be transferred into the aerosol without considering internal diffusion in the tobacco material and the transfer coefficient is increased.

In the case of the first tobacco filler, the aerosol stabilizer can be added to the surface of the rod-shaped tobacco material (granules in the case of the third tobacco filler) in the manner described above.

In the case of the second tobacco filler, the aerosol stabilizer can be added in the manner described above to the surface of the rod-like tobacco material formed by winding one or more tobacco sheets.

Tobacco filler in the form (1) or (2) below can be obtained using the above steps.

(1) Added to the surface of the molded mass of tobacco material.

(2) Uniformly added to the tobacco material

Each of the tobacco excipients in the form (1) or (2) above can be used in a non-burning heated tobacco product by additionally wrapping wrapping paper around the molded body.

The formed tobacco filler is then wrapped in wrapping paper to form a tobacco rod for making a non-burning heated tobacco product. For wrapping, you can use a well-known wrapping device.

The structure of the wrapping paper is not particularly limited, and ordinary wrapping paper can be used. For example, the base paper used for wrapping paper may be cellulose fiber paper and, more specifically, may be made from hemp, wood, or mixtures thereof. It should be noted that "wrapping paper" as used herein is used to wrap the tobacco filler.

The wrapping paper may contain a filler, and the type of filler is not limited. Examples include metal carbonates such as calcium carbonate and magnesium carbonate, metal oxides such as titanium oxide and alumina, metal sulfates such as barium sulfate and calcium sulfate, metal sulfides such as zinc sulfide, quartz, kaolin, talc, diatomite and plaster. In particular, calcium carbonate is preferably contained from the viewpoint of improving whiteness and opacity and increasing the heating rate.

The proportion of filler in the mixture in wrapping paper is not particularly limited and is usually 1 mass. % or more and 50 wt. % or less, preferably 5 wt. % or more and 45 wt. % or less, more preferably 10 wt. % or more and 42 wt. % or less, and particularly preferably from 20 wt. % or more and 40 wt. % or less. For example, the content of calcium carbonate can be determined by measuring the ash content or by quantifying the amount of calcium ions after extraction.

If the proportion is below the lower limit of the range, the wrapping paper is more likely to burn. If the proportion is higher than the upper limit, the strength of the wrapping paper is greatly reduced, which may lead to poor performance of the wrapping paper.

Various auxiliary substances other than base paper and filler can be added to the wrapping paper, and for example, a water resistance improving agent can be added to improve water resistance. Examples of water resistance improvers include wet strength agents (WS agents) and sizing agents. Examples of wet strength agents for paper include urea-formaldehyde resins, melamine-formaldehyde resins, and polyamidoepichlorohydrin (PAE). Examples of sizing agents include rosin soap, alkyl ketene dimers (AKD), alkenyl succinic anhydrides (ASA), and highly saponified polyvinyl alcohols having a saponification of 90% or more.

As an auxiliary agent, a paper strengthening agent may be added, and examples thereof include polyacrylamide, cationic starch, oxidized starch, CMC, polyamide epichlorohydrin resins, and polyvinyl alcohols. In particular, oxidized starch is known to improve breathability when used in a very small amount (Japanese Unexamined Patent Application Publication No. 2017-218699).

The wrapping paper can be coated as needed.

The coating agent can be added to at least one of two surfaces, namely the front surface and the back surface of the wrapping paper. The coating agent is not particularly limited, but is preferably a coating agent that can form a film on the paper surface to reduce liquid permeability. Examples thereof include alginic acid and its salts (eg sodium salts); polysaccharides such as pectin; cellulose derivatives such as ethylcellulose, methylcellulose, carboxymethylcellulose and nitrocellulose, and starch and its derivatives (for example, ether derivatives such as carboxymethyl starch, hydroxyalkyl starch, and cationic starch, and ester derivatives such as starch acetate, starch phosphate and starch octenyl succinate).

The weight of 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, suitable strength and performance of the wrap can be maintained.

The air permeability of the wrapping paper is usually 0 Coresta or more and 120 Coresta or less, preferably 5 Coresta or more and 100 Coresta or less, and more preferably 10 Coresta or more and 80 Coresta or less. Within this range, suitable strength and flavor of the smoke can be maintained.

Non-Combustion Heated Tobacco Product One embodiment of non-combustible heated tobacco product according to one embodiment of the present invention has, for example, the configuration shown in FIG. 1.

The non-burning heated tobacco product 1 shown in FIG. 1 includes a tobacco rod formed by tobacco filler 10 and wrapping paper (not shown) that is wrapped around tobacco filler 10, and a mouthpiece 11, which is an end part located opposite tobacco filler 10. The tobacco rod and mouthpiece are connected together by wrapping paper 12 ( tipping paper in Fig. 1), which is the same or different from the wrapping paper that wraps the tobacco filler.

The embodiment shown in FIG. 1 is an embodiment in which the first tobacco filler described above is used as the tobacco filler. The crumb (obtained by shredding tobacco leaves or shredding a uniform leaf: for example, 0.5 mm or more wide and 2.0 mm or less) contained in the first tobacco filler often has a length of about 1.0 mm or more and 4.0 mm or less, and this crumb is often randomly oriented in the tobacco filler. Alternatively, the crumb may be processed to be the same length as the length of the tobacco rod and may be positioned in the same direction as the longitudinal direction of the tobacco rod, thus filling the tobacco rod.

As shown in FIG. 1, the mouthpiece 11 may include an aerosol cooling portion 13 (also referred to simply as a cooling portion) and a filter portion 14. A rim paper 12 is provided as wrapping paper to connect these portions. Although the mouthpiece 11 is composed of two segments, in FIG. 1, the mouthpiece 11 may consist of one segment, three segments, or four or more segments. The segments constituting the mouthpiece may be configured to include both a cooling part and a filtering part, as shown in FIG. 1, or may be configured to include only one of them.

Although not shown in FIG. 1, directly behind the tobacco rod and between the tobacco rod and the cooling part 13, a support part can be located. When the support portion is provided, the support portion is positioned in contact with the rear end of the tobacco rod. The support part can be, for example, a hollow tube of cellulose acetate. In other words, the support portion may be a bundle of round columnar cellulose acetate fibers with a central hole formed in the center of its cross section. The support portion may be a metal mesh with a hole in the mesh, such as 5 mesh or more and 35 mesh or less. When the heating element of the electric heating device according to the embodiment shown in FIG. 3, described below, is inserted into the tobacco rod, the support portion acts as an element to prevent the tobacco filler in the non-burning heated tobacco product from being pushed towards the outlet towards the cooling portion 13. The support portion 13 preferably has low airflow resistance and low aerosol filtration efficiency in addition to the function of preventing the expulsion of tobacco filler towards the outlet. The support part also functions as a spacer separating the cooling part 13 of the non-burning heated tobacco product from the tobacco rod.

As the vapor generated by heating the tobacco rod and containing the aerosol source material and tobacco flavor passes through the cooling portion 13, the vapor comes into contact with the air in the cooling portion 13, cools and liquefies to form an aerosol.

In FIG. 1, the non-burning heated tobacco product 1 may have, in the region of the cooling portion 13 and the wrapping paper 12 (band paper) that is wrapped around the cooling portion 13, an opening (not shown) for air intake from the outside. The presence of such an opening allows air to flow from the outside to the inside of the cooling portion 13 during use, and therefore, the vapor generated by heating the tobacco rod and containing the aerosol source material and the tobacco flavor component comes into contact with the air from the outside and liquefies when the temperature is lowered to more reliably aerosol formation. The hole preferably has a diameter of 100 µm or more and 1000 µm or less. The opening preferably has a substantially circular or substantially elliptical shape. When the hole is substantially elliptical, the diameter described above is the length of the major axis. The number of holes may be one or two or more. When there are a plurality of holes, they are preferably arranged in a row around the circumference of the wrapping paper 12 (tip paper).

The cooling part 13 may be, for example, an element obtained by processing thick paper into a cylindrical shape. In this case, there is a cavity in the cylinder, and the vapor containing the aerosol source material and the tobacco flavor component contacts the air in the cavity and cools. If there is an opening, the vapor in the cavity is also in contact with the outside air, which further enhances the cooling effect. The inside of the cylinder may be filled with an assembled sheet member formed from paper, resin film, metal foil, or the like. In this case, the steam can be cooled due to the specific heat of the element.

The filter portion 14 can be produced, for example, using cellulose acetate tow as a material. The individual yarn fineness and the total fineness of the cellulose acetate tow are not particularly limited. In the case of a filter portion with a circumference of 22 mm, the single thread fineness is preferably 5 g/9000 m or more and 12 g/9000 m or less, and the total fineness is preferably 12000 g/9000 m or more and 30000 g/9000 m or less. The cellulose acetate tow fibers may have a Y-shaped or R-shaped cross-section. In the case of a filter filled with cellulose acetate tow, triacetin can be added in an amount of 5 wt. % or more and 10 wt. % or less based on the weight of the cellulose acetate tow to improve filter stiffness.

Alternatively, the filter portion 14 can be made from a so-called paper filter made from fibrous pulp.

Although the filter portion 14 consists of one segment, in FIG. 1, the filter portion 14 may be composed of a plurality of segments. When the filter portion 14 is composed of multiple segments, for example, one embodiment of the filter portion 14 may include a hollow segment on the inlet side and a segment having an inhalation cross-section filled with cellulose acetate tows on the outlet side (i.e., at the end of inspiration for the user) . This embodiment prevents unnecessary loss of the generated aerosol and provides a good appearance of the non-burning heated tobacco product.

Upon receipt of the filter, the adjustment of the resistance to air flow and the introduction of additives (such as well-known scavengers, flavors and flavor-retaining materials) can be designed accordingly.

The material of the wrapping paper 12 (banding paper) is not particularly limited, and for example, paper made from typical plant fibers (cellulose), a sheet using resin-based chemical fibers (such as polypropylene, polyethylene, or nylon), a sheet on resin can be used. base or metal foil such as aluminum foil.

The thickness of the wrapping paper 12 is not particularly limited, but is generally 30 µm or more, and more preferably 35 µm or more in terms of the amount of aerosol delivered and the suitability for production. On the other hand, the thickness is usually 150 µm or less, preferably 140 µm or less.

The density of the wrapping paper 12 is not particularly limited, but is generally 30 g/m ² or more, and preferably 35 g/m ² or more, in terms of the amount of aerosol delivered and workability. On the other hand, the density 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 Coresta units or less in terms of the amount of aerosol delivered and suitability for production.

In one embodiment, the wrapping paper may be secured, for example, with vinyl acetate adhesive after being wrapped around the tobacco rod, cooling portion 13, filter portion 14, and backing portion, as needed.

In one embodiment, shown in FIG. 1, the length of the non-burning tobacco product 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 even more preferably 45 mm or more and 60 mm or less. . The unheated circumference of the tobacco product is preferably 15 mm or more and 25 mm or less, more preferably 17 mm or more and 24 mm or less, and even more preferably 21 mm or more and 23 mm or less. In one embodiment, shown in FIG. 1, the tobacco rod may be about 12 mm long, the cooling portion may be about 20 mm long, the support portion may be about 8 mm long, and the filter portion may be about 7 mm long. The length of these segments can be changed accordingly, depending on, for example, the suitability for production and the level of quality required.

The non-burning heated tobacco product according to the second embodiment of the present invention may include a bowl-shaped container with a through hole on its bottom surface, a tobacco filler that fills the container, and a lid covering the top surface of the container and having an opening-forming portion that forms a through hole when used. hole, and heater. The shape of the container is not particularly limited, but is preferably a shape that can be inserted into a recess formed in the body of the electrically heated tobacco product described below. For example, in one embodiment, the container may have a conical shape in which the side surface is inclined towards the bottom surface.

The through hole formed in the lower surface has such a diameter that the tobacco filler does not penetrate to the outside. In the non-burning heated tobacco product according to the second embodiment of the present invention, for example, the container may be filled with the first tobacco filler or the second tobacco filler described above.

Tobacco product with electric heating

First incarnation

The electrically heated tobacco product according to the first embodiment includes an electric heating device including a heating element, a battery pack that serves as a power source for the heating element, and a control unit for controlling the heating element, and a non-burning heated tobacco product according to the first embodiment, wherein the non-burning heated tobacco product the article is designed to be inserted so that it is in contact with the heating element.

An embodiment of an electrically heated tobacco product may be an embodiment in which the outer peripheral surface of the non-combustible heated tobacco product is heated, as shown in FIG. 2, or an embodiment in which heating is performed from within the tobacco rod of a non-burning heated tobacco product as shown in FIG. 3. In the electric heaters 2 shown in FIG. 2 and 3, air holes are provided, but they are not shown here. Next, the electrically heated tobacco product will be described with reference to FIG. 2.

The electrically heated tobacco product 3 is used such that the above-described non-burning heated tobacco product 1 is inserted so as to come into contact with the heating element 23 located inside the electrical heating device 2.

The electric heater 2 has a battery pack 20 and a control box 21 inside a frame 22 made of resin, for example.

When the non-burning heated tobacco product 1 is inserted into the electric heater 2, the outer peripheral surface of the tobacco rod comes into contact with the heating element 23 of the electric heater 2, and the entire outer peripheral surface of the tobacco rod and part of the outer peripheral surface of the wrapped portion come into contact with the heating element.

The heating element 23 of the electric heater 2 generates heat under the control of the control unit 20 . Heat is transferred to the tobacco rod of the non-burning heated tobacco product, and therefore, the aerosol source material, flavor component, and the like contained in the tobacco filler of the tobacco rod is vaporized.

The heating element may be, for example, a sheet heater, a plate heater or a tube heater. A sheet heater is a flexible heater in the form of a sheet, and an example of this is a heater including a film (about 20 to 225 µm thick) of a heat-resistant polymer such as polyimide. The plate heater is a plate-shaped rigid heater (about 200 to 500 µm thick), and an example thereof is a heater that includes a plate base with a resistive circuit thereon, and this part is used as a heat generating part. Another example of the heating element may be a rod heater or a conical heater made of metal or the like, containing a resistance circuit, and this part is used as a heat generating part. The cross-sectional shape of the tubular heater may be, for example, round, elliptical, polygonal, or round polygonal.

In the case of an embodiment in which the outer peripheral surface of the non-burning heated tobacco product is heated, as shown in FIG. 2, the above-described sheet heater, plate heater, or cylinder heater can be used. On the other hand, in the case of an embodiment in which heating is performed from inside the tobacco rod being heated without burning the tobacco product, as shown in FIG. 3, the above-described plate heater, column heater, or cone heater can be used.

The length of the heating element in the long axis direction may be L±5.0 mm, where L is the length (mm) of the tobacco rod in the long axis direction. The length of the heating element in the long axis direction is preferably L mm or more in terms of sufficient heat transfer to the tobacco rod to sufficiently vaporize the aerosol source material, flavor component and the like contained in the tobacco filler, that is, in terms of delivering the aerosol, and preferably 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 .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 in terms of reducing the generation of an undesirable component effect on the aroma of smoke, etc. .

The heating intensity of the heating element, such as the heating time and temperature of the non-burning heated tobacco product, may be set in advance for each electrically heated tobacco product. For example, the heating intensity may be set in advance so that after the non-burning heated tobacco product is placed in the electric heating device, preheating is carried out for a certain period of time until the temperature of the outer peripheral surface of the non-burning heated tobacco product part is reached, while the part inserted into the device reaches X (°C) and then maintained at a constant temperature of X (°C) or lower.

In terms of the amount of aerosol supplied, X(°C) is preferably 80°C or higher and 400°C or lower. In particular, X (°C) may be 80°C, 90°C, 100°C, 110°C, 120°C, 130°C, 140°C, 150°C, 160°C, 170°C, 180°C, 190°C, 200°C, 210°C, 220°C, 230°C, 240°C, 250°C, 260°C, 270°C, 280°C, 290°C, 300° C, 310°C, 320°C, 330°C, 340°C, 350°C, 360°C, 370°C, 380°C, 390°C or 400°C.

The temperature of the heating element may be within the above ranges, but the non-burning heated tobacco product according to one embodiment of the present invention, inserted into the heating element of the electrically heated tobacco product, is preferably heated to about 250°C-400°C. Heating a non-burning heated tobacco product in accordance with one embodiment of the present invention in this temperature range contributes to a satisfactory stability of the aerosol during use.

The vapor generated from the tobacco rod when heated by the heating element and containing the aerosol source material, the flavoring component, and the like, reaches the user's mouth through the mouthpiece, including the cooling part, the filtering part, and the like.

Electrically Heated Tobacco Product of the Second Embodiment The electrically heated tobacco product of the second embodiment provides for the use of a non-burning heated tobacco product of the second embodiment, and includes a power source, a control unit, and a housing housing these components, the housing having a recess for accommodating the non-burning tobacco product of the second embodiment. burning a tobacco product according to the second embodiment and an air vent. The electrically heated tobacco product of the second embodiment includes a removable mouthpiece for inhaling an aerosol and a flavor component of smoke generated from a non-burning heated tobacco product placed in a recess.

The mouthpiece has an electrical contact electrically connected to the container lid of the non-burning heated tobacco product, and when attached to the body, the mouthpiece is electrically connected to a heater provided on the container lid. In addition, this connection also provides an electrical connection to the control unit housed in the housing.

The user places the second non-burning heated tobacco product into the recess of the electrically heated tobacco product body and attaches the mouthpiece to the electrically heated tobacco product body. When the mouthpiece is attached to the body of the electrically heated tobacco product, the opening portion of the lid of the container is opened and the inhalation port of the mouthpiece communicates with the flow passage of the container. The user presses a switch provided on the electrically heated tobacco product to supply electricity from the power source to the heater through the control unit, and the container included in the non-burning heated tobacco product is heated by the heat generating heater. When the container is heated, the aerosol source material and the flavor component of the smoke evaporate from the tobacco filler in the container, forming an aerosol. When inhaled by a user, air enters through a vent in the body of the electrically heated tobacco product, and the air also enters the container through a through hole provided on the bottom surface of the non-combustible heated tobacco product container. Both the air and the resulting aerosol containing the aromatic component of the smoke are inhaled by the user through the mouthpiece.

Electrically Heated Tobacco Product of the Third Embodiment An electrically heated tobacco product for heating a non-burning heated tobacco product by induction heating is described.

The electrically heated tobacco product 4 for heating a non-burning heated tobacco product by induction heating includes an inductor 33 instead of the heating element 23 of the electrically heated tobacco product according to the first embodiment shown in FIG. 2, a battery pack 30 that supplies power to the inductor to operate the inductor, and a control box 31 that controls the power supply (FIG. 4). The operation may be performed manually or may occur automatically in response to the insertion of a non-burn heated tobacco product inserted into the electric heating device 5 by the user.

The battery pack 30 supplies direct current. The control unit 31 includes a DC/AC converter for supplying the inductor with high-frequency alternating current.

During operation of the device, a high frequency alternating current passes through a dielectric coil which forms part of the inductor 33. As a result, the inductor 33 generates a fluctuating electromagnetic field.

The electromagnetic field frequency preferably ranges from 1 MHz or more to 30 MHz or less, preferably 2 MHz or more to 10 MHz or less, and, for example, 5 MHz or more to 7 MHz or less.

The non-burning heated tobacco product 1' is designed to operate in synchronism with an electric heating device 5, and has a current collector 35 inside the rod portion formed by the tobacco filler, which heats the tobacco filler. Examples of the material of the current collector 35 include aluminum, iron, iron alloys, stainless steel, nickel, and nickel alloys.

The inductor 33 is located adjacent to the inner wall of the receiving chamber 34 for receiving a non-burning heated tobacco product.

In use, the user inserts the non-burning heated tobacco product 1' into the electric heating device 5 so that the part having the current collector 35 is located next to the inductor 33.

When the non-incinerated tobacco product 1' is correctly placed in the receiving chamber 34 of the electric heater 5, the current collector 35 included in the non-incinerated tobacco product 1' is in a fluctuating electromagnetic field.

The fluctuating electromagnetic field creates an eddy current in the current collector 35, as a result of which this current collector 35 heats up. Further heating is provided due to magnetic hysteresis losses in current collector 35.

The heated current collector 35 heats the tobacco rod of the non-burning heated tobacco product 1' to a temperature sufficient to form an aerosol. As for the heating temperature at this time, the tobacco rod may be heated to 250°C or higher and 400°C or lower in one embodiment.

The aerosol generated by the heating passes inside the non-burning heated tobacco product and is inhaled by the user.

Examples

The present invention is described in more detail by means of examples. The present invention is not limited to the description of the following examples without deviating from the gist of the present invention.

Experimental Example 1 Investigation of the Type of Additives Having Different Physical Properties

Tobacco Rod Preparation Tobacco filler (sheet produced by the papermaking process) was prepared in advance by mixing an aerosol source material (glycerol) 15/100 g with tobacco leaf chips. The tobacco crumb used was a mixture of Burley tobacco, flue-cured tobacco and Oriental tobacco = 4:4:2 (weight ratio). The fatty acid or lipids listed in Table 1 were used as an aerosol stabilizer. The aerosol stabilizer shown in Table 1 was dissolved in ethanol in a ratio of 0.1 wt. % to 1 wt. %, and the resulting solution was added to a sheet obtained in the papermaking process and pre-cut to a size of 115 mm × 115 mm by evenly spraying the solution on the surface of the sheet using a glass atomizer (Brown 30 ml, type number: 4) so as to achieve weight addition ratio shown in Table 1. As a wrapping paper, a typical cigarette wrapping paper including 100% virgin cellulose (70 wt %) and calcium carbonate (PCX850 manufactured by Shiraishi Kogyo Kaisha, Ltd., 30 wt %) was prepared. serving as a filler. Then, 920 mg of crumbs from a sheet produced by the papermaking process was wound into a roll having a circumference of 22 mm and a length of 55 mm using a manual rolling injection molding machine (MUS20, Daughers & Ryan Inc.). The resulting products were presented as tobacco rods of Experimental Example 1.

Preparation of Heated Without Combustion Tobacco Product The tobacco rods of Experimental Example 1, prepared as described above, were cut to a length of 12 mm. With wrapping paper, each tobacco rod was hand-attached to an 8 mm support member (8.0Y40000) having a central hole, a 20 mm long cooling portion formed from a paper tube with holes for dilution air (ventilation rate: 20%) along its outer circle and a 7 mm long filtering part filled with cellulose acetate fibers (5.0Y35000) for the preparation of non-burning heated tobacco products.

Sensory evaluation

Each tobacco product prepared in Experimental Example 1 was subjected to a performance test. An electrically heated tobacco product having the configuration described above was used in the performance test. The temperature of the heater at the time of introducing the tobacco rod of the non-burning heated tobacco product was set to 320° C. (cylindrical heater ∅ 3.2 mm) and an operation test was performed. Organoleptic evaluation was carried out by 10 in-house experts. The assessment was carried out using the visual analogue scale (VAS method) on eight scales, namely: “not felt”, “very weak”, “weak”, “slightly weak”, “neither weak nor strong”, “slightly strong”, “ strong" and "very strong" in relation to the sensation of smoking (similar to smoking cigarettes). The sensation of smoking (similar to smoking cigarettes) was evaluated as "a somatic sensation, including aroma and a sensation of stimulation, similar to the sensation of a cigarette". The maximum number of products evaluated per day was 5, and on each day of evaluation the batch without additives was also evaluated. In the evaluation, smoking was started 30 seconds after the start of heating, then smoking was carried out at 30 second intervals, and smoking was allowed up to five minutes. In order to make a stable evaluation, the period of two minutes from the start of heating was excluded from the evaluation target. Participants in the experiment were given a 5-minute break from the end of the evaluation to the start of the evaluation of the next lot. The smoking sensation (similar to cigarette smoking) was represented by a value determined by subtracting the sensory evaluation result of the batch without additives from the sensory evaluation result of each batch to which the substance shown in Table 1 was added.

Solubility measurements

In the solubility measurement, fatty acid was added to 2 g of glycerol in such an excess amount that an undissolved portion was formed, and the amount of fatty acid dissolved in glycerol was measured. If the amount of excess added fatty acid is large, separation into two layers becomes difficult, and therefore it is necessary to add fatty acid in a slightly excess amount. After adding the fatty acid, the mixture was kept for 48 hours and separated into two layers, then 100 mg of glycerol was taken, transferred and dissolved in 2 ml of methanol and the amount of fatty acid was quantified using GC-FID (Model 7890A, Agilent Technologies, Inc.) .

Dilution Mean Residue Count Diameter As an indication that the generated aerosol particles are stably present without volatilization until they are delivered to the user's mouth, this experimental example used the mean count diameter, which can be measured with using DMS (Differential Mobility Spectrometer, Cambustion). Because the DMS aerosol is measured under reduced pressure (0.25 bar (25 kPa)) and under high dilution conditions, the highly volatile aerosol is easily vaporized and gasified. In the case of an aerosol with relatively low volatility, the particle diameter distribution is obtained in terms of residual aerosol, although the aerosol is reduced by evaporation. In this case, if the diameters of the generated aerosol particles are the same, the distribution of residual aerosol particle diameters varies depending on the level of volatility. In this example, the number-based peak particle diameter is considered to indicate stability under reduced pressure and high dilution conditions, and is thus used as an indicator. A larger average count diameter means that the aerosol is present more stably, and a smaller average count diameter means that the aerosol is more unstable. Under the conditions of this experiment, the primary dilution was performed at a rate of 25 l/min, and the secondary dilution was set to 200 times and carried out. It should be noted that the mass peak particle diameter immediately after formation before dilution and depressurization was also separately measured using Spraytec (model STP5321, Malvern), and there was no difference in the types of additives and the range of additives added in this example, and the average the counting diameter was about 200 nm.

Test results

Table 2 presents the test results. In addition, in FIG. 5 shows the solubility in glycerol and the effect of smoking sensation for each individual fatty acid, and FIG. 6 shows the smoking sensation obtained when palmitic acid, which is a C16 saturated fatty acid, and oleic acid serving as a mixture component are added, and shows the smoking sensation effect obtained by using palm oil or candelilla wax, which is usually often added to as a lipid. As can be seen from FIG. 5, the results showed that the highest smoking sensation was obtained with palmitic acid, which is a C16 saturated fatty acid, and stearic acid, which is a C18 saturated fatty acid, and the other individual fatty acids were ineffective. It was also found that since unsaturated fatty acids have a relatively high solubility in glycerol, even with C18 unsaturated fatty acids, their effect was lower than that of saturated fatty acids. Although the effect was also confirmed for the C19 saturated fatty acid, C19 occurs in nature in a very small amount, and thus production problems arise when such a fatty acid is used. Therefore, it is believed that a strong smoking sensation can be obtained by adding a saturated fatty acid corresponding to C16-C18. Table 2 presents the test results. In addition, in FIG. 5 shows glycerol solubility and effect. Therefore, it is believed that a strong smoking sensation can be obtained by adding a saturated fatty acid corresponding to C16-C18.

The results showed that, on the contrary, when oleic acid, which is an unsaturated fatty acid, was added to palmitic acid, which is a C16 saturated fatty acid, the smoking feeling was reduced by the addition, and the effect was not sufficiently exhibited under the condition that the proportion of palmitic acid was less than 50 mass %. %. A similar trend is also confirmed for palm oil, which is a lipid containing palmitic acid and stearic acid in a total of 48 wt. %, and the effect is insufficient, probably due to the insufficient mass fraction of palmitic acid. The DMS measurement results showed an association with the smoking sensation value, and as the average DMS count diameter increased, the smoking sensation value increased. In particular, palmitic acid, which is a C16 saturated fatty acid, and stearic acid, which is a C18 saturated fatty acid, have been found to have large average counting diameters and are effective for aerosol stabilization.

Experimental Example 2 Effect obtained by changing the amount of C16 palmitic acid In the tobacco rods used in Experimental Example 2, C16 palmitic acid was used as an aerosol stabilizer. Tobacco rods having the same dimensions as in Experimental Example 1 were prepared by wrapping tobacco filler as in Experimental Example 1, except that the amount of added palmitic acid was changed, and sensory evaluation and measurements were performed in the same way as in Experimental Example 1. which were carried out in Experimental Example 1.

Test results

The level of testing and results are shown in Table 3 and in FIG. 7. In test samples to which only palmitic acid was added as a lipid in an amount of 0.1 wt. % to 1.9 wt. %, the sensation of smoking (similar to smoking cigarettes) was increased compared to the test sample without additives. An effect cannot be expected if the amount of lipid added is excessively small. On the contrary, when lipid is added in a large amount, it is likely that the physical properties of the aerosol are excessively stabilized, and the taste/aroma and somatic sensation that may be felt initially cannot be felt. Therefore, the sensation of smoking (cigarette) tended to decrease. Based on the results of the examples and comparative examples, it is assumed that the most preferred range of the amount of lipid containing a saturated fatty acid with a number of carbon atoms from 16 to 18 is from about 0.1 wt. % to about 1.9 wt. %.

List of reference symbols 1, 1' non-burning heated tobacco product

10 tobacco rod

11 mouthpiece

12 tip paper

13 cooling part

14 filter part

2.5 electric heating device

20.30 battery pack

21.31 control unit

22.32 frame

23 heating element

33 inductor

34 receiving chamber

35 pantograph

3, 4 electrically heated tobacco product.

Claims (21)

1. Tobacco filler for heated without burning tobacco products, including tobacco material and an aerosol source material, where an aerosol stabilizer containing lipids is added to the tobacco filler, and the proportion of saturated fatty acid having from 16 to 18 carbon atoms in lipids contained in aerosol stabilizer, is 50 wt. % or more. 2. Tobacco filler for heated without burning tobacco products according to claim 1, where the amount of aerosol stabilizer added to the tobacco filler is from 0.1 wt. % to 5.0 wt. % relative to the dry weight of the total amount of tobacco filler. 3. Tobacco filler for non-burning heated tobacco products according to claim 1 or 2, wherein the solubility of the saturated fatty acid having 16 to 18 carbon atoms in glycerin is 0.13 mg/g or less. 4. Tobacco filler for heated without burning tobacco products according to any one of paragraphs. 1-3, in which the saturated fatty acid containing from 16 to 18 carbon atoms is at least one acid selected from palmitic acid, stearic acid and mixtures thereof. 5. Tobacco filler for heated without burning tobacco products according to any one of paragraphs. 1-4, which is a molded body of tobacco material, consisting of tobacco chips. 6. Tobacco filler for heated without burning tobacco products according to any one of paragraphs. 1-4 which is a molded tobacco material body composed of a tobacco sheet. 7. Tobacco filler for heated without burning tobacco products according to any one of paragraphs. 1-4, which consists of granular tobacco material. 8. Tobacco filler for non-burning heated tobacco products according to claim 5 or 6, wherein the aerosol stabilizer is added to the surface of the shaped body of the tobacco material. 9. Tobacco filler for heated without burning tobacco products according to any one of paragraphs. 5-7 wherein the aerosol stabilizer is evenly added to the tobacco material. 10. Heated without combustion tobacco product, including a tobacco rod formed from a tobacco filler according to any one of paragraphs. 1-9, and the mouthpiece, which is the end part opposite the tobacco rod. 11. The non-burning heated tobacco product of claim 10, wherein the mouthpiece includes a cooling portion. 12. A non-burning heated tobacco product comprising the tobacco filler of claim 7 and a container containing the tobacco filler. 13. A non-burning heated tobacco product according to claim 10 or 11, having a current collector inside the tobacco rod that heats the tobacco filler. 14. An electrically heated tobacco product, comprising an electrical heating device including a heating element, a battery pack that serves as a power source for the heating element, and a control unit for controlling the heating element, and a non-burning heated tobacco product according to any one of paragraphs. 10-12, wherein the non-burning heated tobacco product is insertable so that it is in contact with the heating element, wherein the tobacco rod of the non-burning heated tobacco product is heated to a temperature of 250°C to 400°C. 15. The electrically heated tobacco product of claim 14, wherein the heating element has a cylindrical shape. 16. An electrically heated tobacco product, comprising an electric heating device comprising an inductor, a battery pack that supplies electricity to the inductor, and a control unit that controls the supply of electricity, and a non-burning heated tobacco product according to claim 13, wherein the non-burning heated tobacco product is made with the possibility of insertion so that it is close to the inductor, wherein the tobacco rod of the non-burning heated tobacco product is heated to a temperature of 250°C to 400°C. 17. A method for producing a tobacco filler, which includes the step of adding an aerosol stabilizer to the tobacco material before molding or after molding, which contains lipids and in which the proportion of saturated fatty acid having from 16 to 18 carbon atoms in lipids is 50 wt. % or more. 18. The method for producing tobacco filler according to claim 17, wherein the step of adding the aerosol stabilizer to the tobacco material prior to molding is the step of mixing the tobacco material and the aerosol stabilizer. 19. The method for producing a tobacco filler according to claim 17, wherein the step of adding the aerosol stabilizer to the tobacco material after molding is the step of spraying or applying the aerosol stabilizer to the tobacco material after molding.

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