WO2021221120A1

WO2021221120A1 - Sheet for smoking article

Info

Publication number: WO2021221120A1
Application number: PCT/JP2021/017045
Authority: WO
Inventors: 正浩千田; 正美川田; 泰宏中川; 晃次郎篤永
Original assignee: 日本たばこ産業株式会社
Priority date: 2020-04-30
Filing date: 2021-04-28
Publication date: 2021-11-04
Also published as: JPWO2021221120A1; EP4144229A4; EP4144229A1

Abstract

Provided is a sheet for a smoking article, the sheet containing non-pulp fibers and an aerosol-generating substrate and having a thickness of no more than 70 µm.

Description

Sheet for smoking goods

The present invention relates to a sheet for smoking articles.

As one of the non-combustible smoking tools, a liquid electronic cigarette has been developed to evaporate (vaporize) a liquid containing a nicotine-based fragrance and give an experience similar to smoking a cigarette. This liquid type electronic cigarette is composed of an atomizer for evaporating and atomizing by heating the liquid, a solution tank for holding the liquid supplied to the atomizer, and a battery (for example, Patent Documents 1 to 3).

As another mode of non-combustion type smoking equipment, a non-combustion type cigarette having a form similar to the conventional combustion type cigarette and having a tobacco material and a filter has been developed. The non-combustion type cigarette is used by being heated by a separately prepared heating device (Patent Document 4). Since glycerin and propylene glycol, which are aerosol-forming base materials in non-combustion type cigarettes, are consumed during smoking, a large amount of aerosol-forming base material is required to generate the same amount of aerosol as the liquid type electronic cigarette. .. For this reason, studies have been made on, for example, adding or applying a large amount of aerosol-forming base material to a tobacco material such as a tobacco sheet or a tobacco engraving (Patent Documents 5 to 7).

U.S. Patent Publication No. 2015/0128974 U.S. Patent Publication No. 2019-0208821 U.S. Patent Publication No. 2017/0265517 Japanese Patent Application Laid-Open No. 2014-515274 Special Table 2010-520964 Canadian Patent Publication No. 360221 U.S. Pat. No. 5,322,076

By the way, if the sheet for smoking articles is excessively thick, problems such as a decrease in thermal conductivity and a small surface area of the sheet make it difficult to obtain a sufficient sense of smoke volume. On the other hand, there is a problem that the strength decreases when the sheet becomes thin. In view of such circumstances, it is an object of the present invention to provide a sheet for smoking articles having a balance between thickness and strength.

The inventors have found that a smoking article sheet containing a fiber having a specific fiber diameter and having a specific thickness solves the above-mentioned problem. That is, the above-mentioned problem is solved by the following invention.
Aspect 1
With non-pulp fiber
Contains aerosol-forming substrates,
A sheet for smoking articles having a thickness of 70 μm or less.
Aspect 2
The sheet for smoking articles according to aspect 1, wherein the non-pulp fiber is derived from a plant.
Aspect 3
The sheet for smoking articles according to aspect 1 or 2, wherein the non-pulp fiber contains monofibrillated cellulose.
Aspect 4
The sheet for smoking articles according to any one of aspects 1 to 3, wherein the non-pulp fiber contains dietary fiber.
Aspect 5
The sheet for smoking articles according to aspect 4, wherein the dietary fiber contains citrus fiber.
Aspect 6
The sheet for smoking articles according to any one of aspects 1 to 5, wherein the non-pulp fiber has an average fiber diameter of 25 μm or less.
Aspect 7
The sheet for smoking articles according to any one of aspects 1 to 6, which comprises 20 to 50% by weight of the aerosol-forming substrate.
Aspect 8
The sheet for smoking articles according to any one of aspects 1 to 7, further comprising a binder.
Aspect 9
The sheet for smoking articles according to aspect 8, wherein the binder is amphipathic.
Aspect 10
The sheet for smoking articles according to aspect 8 or 9, wherein the binder is a nonionic cellulose derivative.
Aspect 11
The sheet for smoking articles according to any one of aspects 1 to 10, further comprising an emulsifier.
Aspect 12
The smoking article sheet according to aspect 11, which contains 0.1 to 0.3 parts by weight of an emulsifier with respect to 100 parts by weight of the smoking article sheet.
Aspect 13
The sheet for smoking articles according to any one of aspects 1 to 12, which has been bent, cut, pleated, or crimped.
Aspect 14
At least a step of preparing a slurry containing the non-pulp fiber, an aerosol-forming base material, and a medium.
A step of developing the slurry on a substrate to prepare a wet sheet, and a step of drying the wet sheet.
The method for producing a sheet for smoking articles according to any one of aspects 1 to 13.
Aspect 15
A rod-shaped flavor generating material obtained by folding or winding the smoking article sheet according to any one of aspects 1 to 13.
Aspect 16
A multi-layer sheet for smoking articles containing multiple sheets,
A) The first smoking article sheet according to any one of aspects 1 to 13.
B) includes two or more sheets selected from the group consisting of the second smoking article sheet according to any one of aspects 1 to 13 and C) a sheet made of a material different from the smoking article sheet.
A multi-layer sheet for smoking articles, wherein the formulation of the first smoking article sheet and the second smoking article sheet formulation are different or the same.
Aspect 17
With a tubular wrapper,
A flavor-generating segment comprising the smoking article sheet according to any one of aspects 1 to 13, the smoking article multilayer sheet according to aspect 16, or a material derived from these, which is filled in the wrapper.
Aspect 18
The flavor generating segment according to aspect 17, wherein the wrapper is filled with the rod-shaped flavor generating material, the cut fragment of the smoking article sheet, or the cut fragment of the smoking article multilayer sheet.
Aspect 19
A smoking article comprising the smoking article sheet according to any one of aspects 1 to 13, the smoking article multilayer sheet according to aspect 16, or a material derived from these.
Aspect 20
A smoking article comprising a wrapper composed of the smoking article sheet according to any one of aspects 1 to 13 or the smoking article multilayer sheet according to aspect 16.
Aspect 21
A combustible or non-combustible smoking article comprising the flavoring segment according to aspect 17 or 18.
Aspect 22
The combustible or non-combustible smoking article according to aspect 21, wherein the wrapper is composed of the smoking article sheet according to any one of aspects 1 to 13 or the smoking article multilayer sheet according to aspect 16.
Aspect 23
The smoking article sheet according to any one of aspects 1 to 13, the smoking article multilayer sheet according to aspect 16, or a material derived from these.
Materials selected from the group consisting of tobacco sheets, tobacco engravings, and combinations thereof, and
Tobacco filling containing.
Aspect 24
The tobacco filling according to aspect 23, wherein the multi-layer sheet for smoking articles contains a metal foil as essential as C).
Aspect 25
The tobacco filling according to aspect 24, wherein the C) and the A) or B) are attached to each other in the multilayer sheet for smoking articles.
Aspect 26
A refill comprising the tobacco filling according to any of aspects 23-25.

INDUSTRIAL APPLICABILITY According to the present invention, it is possible to provide a sheet for smoking articles having a balance between thickness and strength.

Schematic diagram showing an example of a flavor generation segment using a smoking article sheet Schematic diagram showing an example of a flavor generation segment using a smoking article sheet Schematic diagram showing an example of a flavor generation segment using a smoking article sheet Schematic diagram showing an example of a flavor generation segment using a smoking article sheet Schematic diagram showing an example of a flavor generation segment using a smoking article sheet Schematic diagram showing an example of a flavor generating material using a smoking article sheet Schematic cross-sectional view showing an example of a non-combustion heating type smoking system before heating Schematic cross-sectional view showing an example of a non-combustion heating type smoking system during heating Schematic cross-sectional view showing an example of a non-combustion heating type flavor suction article Perspective view showing another example of a non-combustion heated flavor suction article Exploded view showing the non-combustion heating type flavor suction article shown in FIG. Schematic diagram showing the internal structure of the non-combustion heating type flavor suction article shown in FIG.

Hereinafter, the present invention will be described in detail. In the present invention, "X to Y" includes X and Y which are fractional values thereof.
1. 1. Sheets for smoking articles The sheets for smoking articles are sheets used for smoking articles, and include non-pulp fibers and aerosol-forming base materials.

(1) Fiber The fiber used for the smoking article sheet is a non-pulp fiber. Non-pulp fibers are fibers other than pulp fibers. Pulp fiber is an aggregate of cellulose fibers extracted from plants such as wood, and is usually used as a raw material for paper. Examples of pulp fibers include used paper pulp, chemical pulp, mechanical pulp and the like. In the present invention, the non-pulp fiber is preferably derived from a plant. Since plant-derived fibers are biodegradable, they have a small environmental load.

Conventional tobacco sheets are based on pulp fibers such as wood pulp, that is, plant fiber bundles (for example, Patent Document 7: US Pat. No. 5,322,076). Generally, wood pulp is composed of a plurality of single fiber fiber bundles having a fiber diameter of 20 μm, and the fiber diameter of wood pulp is about 100 to 200 μm, and the fiber length is about 1000 to 2000 μm. When a tobacco sheet having practical tensile strength is produced using wood pulp, the sheet becomes thick as 100 to 300 μm, and the thermal conductivity is lowered. However, since non-pulp fibers are used in the present invention, a thin sheet having excellent mechanical strength can be formed, and excellent thermal conductivity can be achieved. From this point of view, the average fiber diameter of the non-pulp fiber is preferably 25 μm or less, more preferably 20 μm or less, still more preferably 15 μm or less. The lower limit of the average fiber diameter is not limited, but is 2 nm or more, 10 nm or more, 100 nm or more, 1 μm or more, or 5 μm or more.

The average fiber diameter of non-pulp fibers can be obtained by acquiring an image of the fibers, measuring the width (minor axis) of a plurality of fibers, and averaging these values. When the fiber shape is columnar (rectangular cross section), the width of the main surface (longer) of the width of the main surface and the width of the side surface is defined as the width of the fiber. The number of measurements is preferably 100 or more.

The non-pulp fiber is preferably monofibrillated cellulose. Monofibrillated cellulose is a fine fiber obtained by subjecting pulp fiber to a treatment such as defibration. The monofibrillated cellulose may be chemically modified such as oxidation. The average fiber diameter of the monofiberized cellulose is as described above. The average fiber length of the monofibrillated cellulose is not limited, but the upper limit thereof is preferably 2000 μm or less, more preferably 1500 μm or less. The lower limit is preferably 100 μm or more, more preferably 500 μm or more.

Also, non-pulp fiber is preferably dietary fiber. Dietary fiber is a food component that is not digested by human digestive enzymes, and in the present invention, it is more preferable that it is an insoluble dietary fiber that is insoluble in water. Dietary fiber may be porous or spongy. Porous fibers can increase the surface area of a sheet for smoking articles and improve the thermal conductivity of the sheet. From the viewpoint of availability and the like, the fiber is preferably a citrus fiber. Citrus fiber is a fiber whose main raw material is citrus albedo. The average fiber diameter of the citrus fiber is as described above. Further, the dietary fiber may be short fibers or columnar particles having a small aspect ratio.

In one embodiment, monofibrillated cellulose and dietary fiber are used in combination. By using both in combination, the strength, water-easiness dispersibility, and smoke sensation amount of the smoking article sheet are improved. The upper limit of the weight of monofibrillated cellulose with respect to 1 part by weight of dietary fiber is preferably 1.5 parts by weight or less, more preferably 1.2 or less, and the lower limit is preferably 0.1 or more, more preferably 0. 3 or more.

It is preferable that all the fibers in the smoking article sheet are composed of non-pulp fibers, but the sheet may contain fibers other than non-pulp fibers. In this case, the amount of non-pulp fiber in the total fiber is preferably 60 to 99% by weight, more preferably 70 to 90% by weight. If the amount of non-pulp fiber is less than the lower limit, it may be difficult to thin the smoking article sheet.

The amount of total fibers in the smoking article sheet is preferably 1 to 60% by weight, more preferably 10 to 40% by weight, from the viewpoint of mechanical strength and the like.

(2) Binder The sheet for smoking articles of the present invention may contain a binder. The binder is an adhesive for binding fibers and the like. As the binder, a binder known in the art can be used. If the binder is hydrophilic, the water-easiness dispersibility of the smoking article sheet is improved, but on the other hand, the affinity with the lipophilic aerosol-forming base material is lowered and the amount cannot be increased, so that the amount of smoke is felt. Decreases. From the viewpoint of the balance between the two, the binder is preferably amphipathic. That is, the binder is preferably soluble in water and an organic solvent such as ethanol. Examples of such a binder include a cellulose derivative, and the cellulose derivative is preferably nonionic. Preferred binders include hydroxyalkyl cellulose. Hydroxyalkyl cellulose is represented by the following general formula (I).

(I)

In the formula, R is a hydrogen atom or a group represented by _{− (A—O) m−H.} A is a divalent alkylene group. The alkylene group preferably has 1 to 5 carbon atoms, more preferably 2 or 3 carbon atoms. n is preferably 100 to 2500, and m is 1 or more. A is most preferably a 1,2-propylene group. That is, the binder is most preferably hydroxypropyl cellulose. The degree of substitution of hydroxypropyl cellulose is, for example, 0.1 to 4.5, preferably 2.0 to 4.5. The degree of substitution of hydroxypropyl cellulose is the number of hydroxypropyl groups per glucose. As the hydroxypropyl cellulose, for example, one commercially available from Nippon Soda Co., Ltd. under the trade name of Selney can be used.

The advantages of using hydroxypropyl cellulose as the binder will be explained below. Cellulose is hydrophobic because OH groups are hydrogen-bonded between molecules to crystallize. On the other hand, since hydroxypropyl cellulose has a hydroxypropyl group, it becomes difficult for hydrogen bonds to be formed between molecules, and it becomes hydrophilic and hydrophobic, that is, amphipathic.

Hydroxypropyl cellulose forms a network-structured complex by the interaction (hydrogen bond) between the hydroxypropyl group of hydroxypropyl cellulose and the OH group of glycerin in a system containing a polyhydric alcohol such as glycerin as an aerosol-producing base material. It is known to form. Further, since hydroxypropyl cellulose is amphipathic, it is considered that hydrophilic fragrances and hydrophobic fragrances can be incorporated into the network structure. Therefore, when the smoking article sheet contains a fragrance, the fragrance is stably held by the complex of the mesh structure without volatilizing during storage of the smoking product, and during use of the smoking product (particularly, of the flavor suction article). Can be released stably when heated).

Furthermore, hydroxypropyl cellulose is soluble in organic solvents, especially ethanol. Therefore, as will be described later, when an ethanol-based slurry is used in the production of a sheet for smoking products, the viscosity of the slurry can be lowered, so that the transportation, coating process, etc. in the production are higher than those in the water-based slurry. It is advantageous in. Further, since ethanol is more easily volatilized than water, it is possible to shorten the production time and reduce the energy cost at the time of drying in the above production method.

The amount of the binder in the smoking article sheet is not particularly limited, but is preferably 10 to 60% by weight, more preferably 20 to 40% by weight. If the amount of the binder exceeds the upper limit value, the water dispersibility and the feeling of smoke amount tend to decrease, and if it is less than the lower limit value, the surface condition of the smoking article sheet tends to deteriorate.

(3) Aerosol-forming base material The aerosol-forming base material is a material that is vaporized and cooled by heating to generate an aerosol or atomized to produce an aerosol. Known aerosol-forming substrates can be used, and examples thereof include polyhydric alcohols such as glycerin and propylene glycol (PG), triethylcitrate (TEC), and triacetin. The amount of the aerosol-forming base material in the smoking article sheet is preferably 20 to 70% by weight, more preferably 30 to 50% by weight, still more preferably 20 to 50% by weight. If the amount of the aerosol-forming base material exceeds the upper limit value, it may be difficult to manufacture a sheet for smoking articles, and if it is less than the lower limit value, the amount of smoke sensation may decrease.

(4) Emulsifier The sheet for smoking articles may contain an emulsifier. The emulsifier enhances the affinity between the lipophilic aerosol-forming substrate and the hydrophilic non-pulp fiber. Known emulsifiers can be used, and examples thereof include emulsifiers having an HLB value of 8 to 18. The amount of the emulsifier is not particularly limited, but is preferably 0.1 to 0.4 parts by weight, more preferably 0.1 to 0.3 parts by weight, still more preferably 0. 2 to 0.3 parts by weight.

(5) Flavor-generating base material The smoking article sheet may contain a flavor-generating base material. The flavor-generating base material is a material that imparts flavor and taste, and is preferably a tobacco material. Specific examples of the tobacco material include chopped dried tobacco leaves, crushed leaf tobacco, and tobacco extract (extract from water, an organic solvent, or a mixed solution thereof). A crushed leaf tobacco product is a particle obtained by crushing a leaf tobacco. The average particle size of the crushed leaf tobacco can be, for example, 30 to 120 μm. The pulverization can be performed using a known pulverizer, and may be dry pulverization or wet pulverization. Therefore, crushed leaf tobacco is also referred to as leaf tobacco particles. In the present invention, the average particle size is determined by a laser diffraction / scattering method, and specifically, it is measured using a laser diffraction type particle size distribution measuring device (for example, LA-950 manufactured by HORIBA, Ltd.). The type of tobacco is not limited, and yellow varieties, Burley varieties, Orient varieties, native varieties, and other Nicotiana-Tabacam varieties and Nicotiana rustica varieties can be used. The amount of the flavor-generating base material in the smoking article sheet is not particularly limited, but is preferably 1 to 30% by weight, more preferably 10 to 20% by weight.

(6) Fragrance The smoking article sheet may contain a fragrance. A fragrance is a substance that provides a scent and flavor. The fragrance may be a natural fragrance or a synthetic fragrance. One kind of fragrance may be used as a fragrance, or a mixture of a plurality of kinds of fragrances may be used. As the fragrance, any fragrance generally used in smoking articles can be used, and specific examples thereof will be described later. The fragrance can be contained in the smoking article sheet in an amount such that the smoking article can provide a preferable aroma and flavor, for example, the amount thereof is preferably 1 to 30% by weight in the smoking article sheet. More preferably, it is 10 to 20% by weight.

As the fragrance, any fragrance that is normally used, such as essential oils, natural fragrances, and synthetic fragrances, can be used. Further, it may be liquid or solid, regardless of its properties. Suitable flavors include tobacco extracts and tobacco components, sugar and sugar flavors, licorice, cocoa, chocolate, fruit juices and fruits, spices, liquors, herbs, vanilla, and flower flavors. Examples include selected fragrances or combinations thereof. Specifically, isothiocyanates, indols and their derivatives, ethers, esters, ketones, fatty acids, aliphatic higher alcohols, aliphatic higher aldehydes, aliphatic higher hydrocarbons, thioethers, Examples thereof include fragrances selected from thiols, terpene hydrocarbons, phenol ethers, phenols, furfurals and derivatives thereof, aromatic alcohols, aromatic aldehydes, lactones and the like, or combinations thereof.

For example, "Popular and Conventional Technology Collection (Fragrance)" (March 14, 2007, published by the Patent Office), "Latest Fragrance Encyclopedia (Popular Edition)" (February 25, 2012, Soichi Arai, Akio Kobayashi, etc. Uses a wide variety of fragrance ingredients as described in Izumi Yajima and Michiaki Kawasaki, Asakura Shoten) and "Tobacco Flavoring for Smoking Products" (June 1972, R.J. REYNOLDS TOBACCO COMPANY). You can also do it.

From the viewpoint of imparting good taste, for example, acetoanisole, acetophenone, acetylpyrazine, 2-acetylthiazole, alfalfa extract, amyl alcohol, amyl butyrate, trans-annetol, staranis oil, apple juice, peruvian balsam oil, etc. 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, β-carotene, Carrot juice, L-carboxylic, β-cariophyllene, cassia bark oil, cedar wood oil, celery seed oil, chamomile oil, cinnamaldehyde, silicic acid, cinnamyl alcohol, cinnamyl silicate, citronella oil, DL-citronellol, clarisage extra Kto, cocoa, coffee, cognac oil, coriander oil, cuminaldehyde, davana oil, δ-decalactone, γ-decalactone, decanoic acid, dilherb oil, 3,4-dimethyl-1,2-cyclopentandione, 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, ethyl butyrate, ethyl hexanoate, ethyl isovalerate, ethyl lactate, ethyl laurate, ethyl levulinate, ethyl maltor, ethyl octanate, ethyl oleate, ethyl palmitate, ethyl phenylacetate , 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) ) -Flanon, 2-Ethyl-3-methylpyrazine, Eucalyptor, Fenegreak Absolute, Gene Absolute, Lindou Root Infusion, Geraniol, Geranyl Acetate, Grape Juice, Guayacol, Guava Extract, γ-Heptalactone, γ-Hexa Lactone, hexanoic acid, cis-3-hexene-1-ol, hexyl acetate, hexyl alcohol, hexyl phenylacetate, honey, 4-hydroxy-3-pentenoic acid lactone, 4-hydroxy-4- (3-hydroxy-1-) Buteni Le) -3,5,5-trimethyl-2-cyclohexene-1-one, 4- (para-hydroxyphenyl) -2-butanone, sodium 4-hydroxyundecanoate, immortelle absolute, β-ionone, isoamyl acetate , Isoamyl butyrate, Isoamyl phenylacetate, Isobutyl acetate, Isobutyl phenylacetate, Jasmine absolute, Cola nut tincture, Rabdanum oil, Lemon terpenless oil, Kanzo extract, Linalol, Linalyl acetate, Roverage root oil, Martol, Maple syrup, Mensole , Menton, L-menthyl acetate, paramethoxybenzaldehyde, methyl-2-pyrrylketone, methyl anthranylate, methyl phenylacetate, methyl salicylate, 4'-methylacetophenone, methylcyclopentenolone, 3-methylvaleric acid, mimosa absolute, towitsu , Myristic acid, nerol, nerolidol, γ-nonalactone, nutmeg oil, δ-octalactone, octanal, octanoic acid, orange flower oil, orange oil, oris root oil, palmitic acid, ω-pentadecalactone, peppermint oil, petit Grain paraguay oil, phenethyl alcohol, phenylacetate phenethyl, phenylacetic acid, piperonal, plum extract, propenylguaetol, propyl acetate, 3-propylidenephthalide, prune juice, pyruvate, raisin extract, rose oil, lamb liquor , Sage oil, sandalwood oil, spearmint oil, stylux absolute, marigold oil, tea distillate, α-terpineol, terpinyl acetate, 5,6,7,8-tetrahydroquinoxaline, 1,5,5,9-tetra Methyl-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-buten-4-one, 2,6,6-trimethyl-2-cyclohexene-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, veratoraldehyde, violet leaf absolute , Citral, mandarin oil, 4- (acetoki Simethyl) toluene, 2-methyl-1-butanol, ethyl 10-undecenoate, isoamyl hexanoate, 1-phenylethylacetic acid, lauric acid, 8-mercaptomenthol, sinensal, hexyl butyrate and the like are particularly preferred. Is menthol. In addition, these fragrances may be used alone or in combination of two or more.

The type of solid fragrance is not particularly limited, and from the viewpoint of imparting a good taste, for example, cocoa powder, carob powder, coriander powder, licorice powder, orange peel powder, herb powder, flower powder, spice powder, and tea powder. The fragrance selected from the above, or a combination thereof can be mentioned.

Further, the smoking article sheet may contain a refreshing agent or a flavoring agent. The type of the refreshing agent is not particularly limited, and from the viewpoint of imparting a good taste, for example, menthol, camphor, isopregol, cineole, carboxamide, peppermint oil, eucalyptus oil, 2-l-mentoxyethanol (COOLACT (COOLACT) 5), 3-l-mentoxypropane-1,2-diol (COOLACT® 10), l-mentyl-3-hydroxybutyrate (COOLACT® 20), p-menthan- 3,8-diol (COOLACT® 38D), N- (2-hydroxy-2-phenylethyl) -2-isopropyl-5,5-dimethylcyclohexane-1-carboxamide (COOLACT® 370), N- (4- (Cyanomethyl) phenyl) -2-isopropyl-5,5-dimethylcyclohexanecarboxamide (COOLACT® 400), N- (3-hydroxy-4-methoxyphenyl) -2-isopropyl-5, 5-Dimethylcyclohexanecarboxamide, N-ethyl-p-menthan-3-carboxamide (WS-3), ethyl-2- (p-mentan-3-carboxamide) acetate (WS-5), N- (4-) Methoxyphenyl) -p-menthancarboxamide (WS-12), 2-isopropyl-N, 2,3-trimethylbutyramide (WS-23), 3-l-mentoxy-2-methylpropan-1,2-diol, 2-l-Mentoxyetane-1-ol, 3-l-Mentoxypropane-1-ol, 4-l-Mentoxybutane-1-ol, Mentillactate (FEMA3748), Menglycerin acetal (Frescorat MGA, FEMA3807) , FEMA3808), 2- (2-l-menthyloxyethyl) ethanol, menthyl glyoxylate, 2-pyrrolidone-5-carboxylic acid menthyl, succinate menthyl (FEMA3810), N- (2- (pyridine-2-yl)) -Ethyl) -3-p-menthancarboxamide (FEMA4549), N- (ethoxycarbonylmethyl) -p-menthan-3-carboxamide, N- (4-cyanomethylphenyl) -p-menthancarboxamide, and N- (4) -Aminocarbonylphenyl) -p-menthan and the like can be mentioned. The refreshing agent may be used alone or in combination of two or more.

The type of the flavoring agent is not particularly limited, and from the viewpoint of imparting a good taste, for example, a sweetening agent (sugar (glucose, fructose, isomerized sugar, caramel, etc.), an acidulant (organic acid, etc.), and the like are presented. Examples thereof include seasonings (materials exhibiting umami, bitterness, saltiness, etc.). In addition, lipids (wax, wax, fatty acids (short-chain, medium-chain, long-chain fatty acids, etc.)) may be optionally added.

When flavors, refreshing agents, and flavors are contained in the tobacco, the total content of these is not particularly limited in one embodiment, but is usually 10,000 ppm or more, preferably 10000 ppm or more, from the viewpoint of imparting a good taste. It is 20000 ppm or more, more preferably 25000 ppm or more, and usually 70,000 ppm or less, preferably 50,000 ppm, more preferably 40,000 ppm or less, still more preferably 33000 ppm or less. In another embodiment, the total amount is preferably 2% by weight or more, more preferably 5% by weight or more, preferably 20% by weight or less, and more preferably 10% by weight or less.

(7) Characteristics and Form of Sheet for Smoking Articles 1) Thickness The sheet for smoking articles has a thickness of 70 μm or less. Therefore, the sheet has excellent thermal conductivity. From this point of view, the upper limit of the thickness is preferably 50 μm or less, and the lower limit is preferably 20 μm or more.

2) Sheet strength The sheet for smoking articles preferably has a tensile stress of ^{15 N / mm 2.} Therefore, the sheet has processing suitability. From this point of view, the upper limit of tensile stress is more preferably 50 N / mm ² or less, more preferably the upper limit is 30 N / mm ² or less, and the lower limit is preferably 5 N / mm ² or more, more preferably 10 N / mm. mm ² or more.

3) Easy water dispersibility Since the smoking article sheet has excellent easy dispersibility, it is highly environmentally friendly. The smoking article sheet preferably has a water dispersibility of 3 to 9 minutes when measured according to the official method (JIS P4501). The upper limit of dispersibility in the method is preferably 30 minutes or less.

4) Form The size of the smoking article sheet is appropriately adjusted according to the intended use, the desired number of puffs, and the like. For example, the length can be 20 to 50 mm and the width can be about 20 to 50 mm. An example of the relationship between the sheet size and the number of puffs is shown below.
30 mm x 30 mm: 8 puffs 30 mm x 50 mm: 16 puffs 40 mm x 50 mm: 18 puffs 50 mm x 50 mm: 24 puffs Even if the smoking article sheet is bent, cut or pleated. good.

(8) Flavor-generating segment, rod-shaped flavor-generating material A flavor-generating segment used for smoking articles can be produced from a sheet for smoking articles. The flavor generating segment comprises, in one aspect, a tubular wrapper and a sheet for smoking articles filled in the wrapper in a spiral shape (see FIG. 1 (A)). In the figure, 20A is a flavor generation segment, 1 is a smoking article sheet, 22 is a wrapper, and is usually paper, but may be a smoking article sheet 1 or a smoking article multilayer sheet described later. The flavor generating segment is preferably rod-shaped, and its length can be about 15 to 80 mm and its diameter can be about 5 to 10 mm. Further, the flavor generation segment 20A shown in FIG. 1 (A) can be cut to obtain a flavor generation segment 20A having an aspect ratio (length / diameter) of about 0.5 to 1.2 (FIG. 1 (B). )reference). A material obtained by forming the smoking article sheet 1 into a spiral shape or the like is also referred to as a flavor generating material 21.

The flavor generating segment 20A includes a tubular wrapper 22 in another embodiment, and includes a smoking article sheet 1 folded and filled in the wrapper. The ridges created by folding are substantially parallel to the longitudinal direction of the segment (see FIG. 1 (C)). The flavor generating segment 20A is preferably rod-shaped, and has a length of 15 to 80 mm and a diameter of about 5 to 10 mm. In this aspect, it is preferable that the smoking article sheet 1 is previously subjected to surface wrinkling processing such as pleating or crimping.

The flavor generating segment 20A includes a tubular wrapper 22 in another embodiment, and includes a cut fragment 1c of a smoking article sheet, which is a material derived from the smoking article sheet, filled in the wrapper (FIG. 1 (D). )reference). The flavor generating segment 20A is preferably rod-shaped, and has a length of 15 to 80 mm and a diameter of about 5 to 10 mm. The size of the cut piece is not limited, but for example, the length of the longest side can be about 2 to 4 mm.

In another embodiment, the smoking article sheet 1 is compressed (rolled) from two or more axes parallel to the main surface to form a mass of a material derived from the smoking article sheet, which is stored in a container or the like for flavor. It can also be used as the generation segment 20A (see FIG. 1 (E)). The size of the mass is appropriately adjusted depending on the smoking article used.

It is also possible to fold or wind up the smoking article sheet to make a rod-shaped flavor generating material. FIG. 2 shows an example of the rod-shaped flavor generating material 21. FIG. 2A is a rectangular flavor generating material, and FIG. 2B is a columnar flavor generating material. In one aspect, these can be filled in the wrapper as is, or can be made into flavor generating segments without the use of wrappers. In this case, the dimensions of the rod-shaped flavor generating material 21 are the same as the dimensions of the flavor generating segment. In another aspect, the columnar flavor generating material can be cut out to a material of a desired size by the user. This aspect is suitable as a smoking article that is held in the mouth and absorbs flavor components from the mouth.

(9) Multi-layer sheet for smoking articles The sheet for smoking articles of the present invention can be a multi-layer sheet for smoking articles. The multilayer sheet for smoking articles comprises A) a first sheet for smoking articles of the present invention, B) a second sheet for smoking articles of the present invention, and C) a sheet made of a material different from the sheet for smoking articles. Contains two or more sheets selected from the group. Therefore, in one aspect, at least one of the multilayer sheets for smoking articles is the first sheet for smoking articles of the present invention, and at least one is the second sheet for smoking articles of the present invention. The first smoking article sheet formulation and the second smoking article sheet formulation are different or the same. The second smoking article sheet, which has a different prescription from the first smoking article sheet, is a sheet in which some or all of the above-mentioned essential ingredients are different in type or blending amount, or the first smoking article sheet. A sheet containing other ingredients that are not included. Therefore, in this aspect, a smoking article including a plurality of first smoking article sheets, a smoking article multilayer sheet, and one or more first smoking article sheets and one or more second smoking article sheets. Multi-layer sheet for use can be mentioned.

The multilayer sheet for smoking articles includes the sheet for smoking articles of the present invention and a dissimilar material sheet in another embodiment. Examples of the dissimilar material sheet include metal foil. The metal foil may be a thin plate made of a composite metal material or a single metal material, or may be a metal foil composite made of a laminate of a metal material and another material (for example, paper or a polymer film). Examples of a thin plate made of a composite metal material or a single metal material include an aluminum foil plate, a copper foil plate, an iron foil plate, an aluminum alloy foil plate, and the like. Further, examples of the metal foil composite include a laminate of aluminum foil and paper, that is, aluminum molded paper and the like. Examples of the aluminum molded paper include aluminum laminated paper obtained by bonding aluminum foil to paper with an adhesive, and aluminum vapor-deposited paper obtained by depositing aluminum foil on paper.

When a metal foil is used as a dissimilar material sheet, the heat conductivity of the metal is high, so that it is easy to warm up when the smoking article is used (especially when the smoking article is heated), and the flavor component contained in the smoking article sheet is released. Can be promoted.

The dissimilar material sheet may be an organic film or an inorganic film. Examples of the former include polyethylene terephthalate (PET) film and the like. In addition, the dissimilar material sheet may be paper or the like. The dissimilar material sheet and the smoking article sheet of the present invention may or may not be bonded.

(10) Tobacco Filling The tobacco filling is a tobacco material that functions as a tobacco flavor source in smoking articles. The tobacco filling is, in one aspect, a sheet for smoking articles, a multilayer sheet for smoking articles of the present invention, or a material derived from these, and a material selected from the group consisting of a tobacco sheet, a tobacco engraving, and a combination thereof. include. In addition, the tobacco filling may contain tobacco granules. Tobacco chopped refers to cuts of leaf tobacco (dried tobacco leaves) that are ready to be incorporated into tobacco products. The tobacco sheet refers to a tobacco molded body or a cut product thereof obtained by molding a tobacco material such as tobacco waste or tobacco chopped produced in a raw material factory or manufacturing factory such as leaf waste or chopped waste into a sheet shape, and is a sheet for smoking articles of the present invention. Is different. In addition, tobacco granules refer to tobacco granules obtained by molding tobacco materials such as tobacco waste and tobacco chopped produced in raw material factories and manufacturing plants such as leaf waste and chopped waste into granules.

In another embodiment, the tobacco filling is a material selected from the group consisting of a multi-layer sheet for smoking articles or a material derived from the multi-layer sheet for smoking articles containing a metal foil as essential as C), a tobacco sheet, a tobacco engraving, and a combination thereof. And include. In this case, the metal foil and the smoking article sheet A) or B) of the present invention may or may not be bonded. The tobacco filler may contain the above-mentioned flavors and the like.

Tobacco filling can be filled in a wrapper or container to form a flavor generation segment. The tobacco filling can also be used as a refill for smoking articles. A refill is a refillable tobacco filling. The refill may contain the above-mentioned fragrance and the like in addition to the tobacco filler.

2. Manufacturing Method The smoking article sheet can be manufactured by any method, but is preferably manufactured by a method including the following steps.
At least a step of preparing a slurry containing non-pulp fibers, an aerosol-forming substrate and a medium,
A step of developing the slurry on a substrate to prepare a wet sheet, and a step of drying the wet sheet.

(1) Slurry preparation step In this step, the non-pulp fiber, the aerosol-forming base material, and the medium are mixed. Binders, flavoring substrates, emulsifiers, or flavors can also be added, if desired. The blending amount of each component is adjusted so as to achieve the above-mentioned amount. The medium is preferably water or a water-soluble organic solvent such as ethanol as a main component, and more preferably water or ethanol. The mixing method is not limited, and a known device such as a mixer can be used. The solid content concentration of the slurry obtained by mixing is not limited, but the upper limit thereof is preferably 15% by weight or less, more preferably 12% by weight or less, still more preferably 10% by weight or less, and the lower limit thereof is preferably 3. By weight% or more, more preferably 4% by weight or more.

(2) Wet sheet preparation step In this step, the slurry is developed on a base material to prepare a wet sheet. The base material is not limited, and examples thereof include an inorganic material base material such as a glass plate, a metal base material such as an aluminum plate, an organic material base material such as a PET film, and a fiber material base material such as a non-woven fabric.

(3) Drying step In this step, the wet sheet is dried. Drying can be carried out according to a known method. For example, the wet sheet can be air-dried at room temperature or heated to dry. The heating temperature is also not limited and can be, for example, 60 to 150 ° C. The dried sheet is isolated from the substrate to obtain a sheet for smoking articles.

3. 3. Smoking goods

Smoking articles include flavor-sucking articles in which the user tastes the flavor by suction, and smokeless tobacco (smokeless smoking articles) in which the user tastes the flavor by including the product directly in the nasal cavity and oral cavity. Flavor-sucking articles can be roughly classified into combustion-type smoking articles typified by conventional cigarettes and non-combustion-type smoking articles.

The flavor suction article is an arbitrary suction article that includes a flavor source and allows the user to taste the flavor derived from the flavor source by suction. The flavor source contained in the flavor suction article is preferably derived from tobacco. Specifically, the flavor suction article is a combustion type smoking article that provides a flavor to the user by burning the flavor source, and a non-combustion heating type that provides the flavor to the user by heating the flavor source without burning it. (Heat-not-burn type) Flavor suction articles can be mentioned.

Smokeless tobacco is a product that contains a flavor source and allows the user to enjoy the flavor derived from the flavor source by including the product directly in the nasal cavity or oral cavity. The flavor source contained in smokeless tobacco is preferably derived from tobacco. Smokeless tobacco is known as snuff and chewing tobacco.

The above-mentioned sheet for smoking articles, multi-layer sheet for smoking articles, flavor generating material, etc. can be incorporated into smoking articles. According to one aspect, it is possible to provide the above-mentioned sheet for smoking articles, the multilayer sheet for smoking articles, and smoking articles including materials derived from these. For example, a tobacco filling can be incorporated as a material derived from a smoking article sheet or the like. Further, since the sheet or the multilayer sheet is also suitable as a wrapper, it is possible to provide a smoking article including the wrapper composed of the sheet or the multilayer sheet in the embodiment. As described above, as the smoking article, a combustion type flavor suction article or a non-combustion heating type flavor suction article is preferable.

Examples of the combustion-type flavor suction article include cigarettes, pipes, pipes, cigars, cigarillos, and the like.

The non-combustion heating type flavor suction article may be heated by a heating device separate from the article, or may be heated by a heating device integrated with the article. In the former flavor suction article (separate type), the non-combustion heating type flavor suction article and the heating device are collectively referred to as a "non-combustion heating type smoking system".

An example of a non-combustion heating type smoking system will be described below with reference to FIGS. 3 to 5. Further, as the latter flavor suction article (integrated type), an example of a non-combustion heating type flavor suction article will be described with reference to FIGS. 6 to 8.

3 and 4 are schematic cross-sectional views showing an example of a non-combustion heating type smoking system. FIG. 3 shows a state before the non-combustion heating type flavor suction article 20 is inserted into the heating device 10, and FIG. 4 shows a state in which the non-combustion heating type flavor suction article 20 is inserted into the heating device 10 and heated. Is shown. FIG. 5 is a cross-sectional view of the non-combustion heating type flavor suction article 20.

As shown in FIGS. 3 and 4, the non-combustion heating type smoking system includes a non-combustion heating type flavor suction article 20 and a heating device 10 for heating the flavor generation segment 20A of the non-combustion heating type flavor suction article 20 from the outside. .. The non-combustion heating type smoking system is not limited to the configurations of FIGS. 3 and 4 as long as it includes the non-combustion heating type flavor suction article 20 and the heating device 10 for heating the non-combustion heating type flavor suction article 20.

The heating device 10 shown in FIGS. 3 and 4 includes a body 11, a heater 12, a metal tube 13, a battery unit 14, and a control unit 15. The body 11 has a cylindrical recess 16 and is located on the inner side surface of the recess 16 at a position corresponding to the flavor generation segment 20A of the non-combustion heating type flavor suction article 20 inserted into the recess 16, the heater 12 and the metal. The pipe 13 is arranged. The body 11 further has a ventilation hole 17, and the ventilation hole 17 allows the outside of the body 11 to communicate with the recess 16 to supply air to the non-combustion heating type flavor suction article 20 inserted into the recess 16.

The heater 12 can be a heater by electric resistance, and power is supplied from the battery unit 14 according to an instruction from the control unit 15 that controls the temperature, and the heater 12 is heated.

The heat generated from the heater 12 is transferred to the flavor generation segment 20A of the non-combustion heating type flavor suction article 20 through the metal tube 13 having high thermal conductivity.

Since FIG. 4 is a schematic diagram, there is a gap between the outer circumference of the non-combustion heating type flavor suction article 20 and the inner circumference of the metal tube 13, but in reality, non-combustion is performed in order to efficiently transfer heat. It is desirable that there is no gap between the outer circumference of the heated flavor suction article 20 and the inner circumference of the metal tube 13.

The heating device 10 heats the flavor generation segment 20A of the non-combustion heating type flavor suction article 20 from the outside, but may be one that heats from the inside.

The heating temperature by the heating device 10 is not particularly limited, but is preferably 400 ° C. or lower, more preferably 150 to 400 ° C., and even more preferably 200 to 350 ° C. The heating temperature refers to the temperature of the heater 12 of the heating device 10.

As shown in FIG. 5, the non-combustion heating type flavor suction article 20 (hereinafter, simply referred to as “flavor suction article 20”) has a cylindrical shape. The circumferential length of the flavor suction article 20 is preferably 16 mm to 27 mm, more preferably 20 mm to 26 mm, and even more preferably 21 mm to 25 mm. The total length (horizontal length) of the flavor suction article 20 is not particularly limited, but is preferably 40 mm to 90 mm, more preferably 50 mm to 75 mm, and even more preferably 50 mm to 60 mm.

The flavor suction article 20 is composed of a flavor generation segment 20A, a filter portion 20C constituting a mouthpiece, and a connecting portion 20B connecting the flavor generation segment 20A and the filter portion 20C.

The flavor generation segment 20A is columnar. The total length (length in the axial direction) of the flavor generating segment 20A is, for example, preferably 20 to 70 mm, more preferably 20 to 50 mm, and even more preferably 20 to 30 mm. The shape of the cross section of the flavor generating segment 20A is not particularly limited, but may be, for example, a circular shape, an elliptical shape, a polygonal shape, or the like.

The flavor generating segment 20A has a flavor generating material 21 and a wrapper 22 wrapped around the material 21. Further, the wrapper 22 may be the smoking article sheet 1 of the present invention or the smoking article multilayer sheet of the present invention.

The filter unit 20C has a cylindrical shape. The filter unit 20C has a rod-shaped first segment 25 filled with cellulose acetate acetate fibers and a rod-shaped second segment 26 also filled with cellulose acetate acetate fibers. The first segment 25 is located on the flavor generation segment 20A side. The first segment 25 may have a hollow portion. The second segment 26 is located on the mouthpiece side. The second segment 26 is solid. The first segment 25 is composed of a first packed layer (cellulose acetate fiber) 25a and an inner plug wrapper 25b wound around the first packed layer 25a. The second segment 26 is composed of a second packed layer (cellulose acetate fiber) 26a and an inner plug wrapper 26b wound around the second packed layer 26a. The first segment 25 and the second segment 26 are connected by an outer plug wrapper 27. The outer plug wrapper 27 is adhered to the first segment 25 and the second segment 26 with a vinyl acetate emulsion-based adhesive or the like.

The length of the filter portion 20C is, for example, 10 to 30 mm, the length of the connecting portion 20B is, for example, 10 to 30 mm, the length of the first segment 25 is, for example, 5 to 15 mm, and the length of the second segment 26 is, for example, 5 to 15 mm. can do. The length of each of these individual segments is an example, and can be appropriately changed depending on the manufacturing suitability, the required quality, the length of the flavor generating segment 20A, and the like.

For example, the first segment 25 (center hole segment) is composed of a first packed layer 25a having one or more hollow portions and an inner plug wrapper 25b that covers the first packed layer 25a. The first segment 25 has a function of increasing the strength of the second segment 26. The first packed layer 25a of the first segment 25 is filled with, for example, cellulose acetate fibers at a high density. A plasticizer containing triacetin is added to the cellulose acetate fibers in an amount of, for example, 6 to 20% by mass based on the mass of cellulose acetate and cured. The hollow portion of the first segment 25 has, for example, an inner diameter of φ1.0 to φ5.0 mm.

The first packed layer 25a of the first segment 25 may be composed of, for example, a relatively high fiber filling density, or may be equivalent to the fiber filling density of the second packed layer 26a of the second segment 26, which will be described later. May be good. Therefore, at the time of suction, air or aerosol flows only in the hollow portion, and almost no air or aerosol flows in the first filling layer 25a. For example, in the second segment 26, when it is desired to reduce the decrease due to filtration of the aerosol component, for example, the length of the second segment 26 can be shortened and the first segment 25 can be lengthened by that amount.

Replacing the shortened second segment 26 with the first segment 25 is effective for increasing the delivery amount of the aerosol component. Since the first packed layer 25a of the first segment 25 is a fiber packed layer, the feeling of touch from the outside during use does not cause discomfort to the user.

The second segment 26 is composed of a second packed layer 26a and an inner plug wrapper 26b that covers the second packed layer 26a. The second segment 26 (filter segment) is filled with cellulose acetate fibers at a general density and has a filtration performance of a general aerosol component.

The filtration performance for filtering the aerosol (mainstream smoke) emitted from the flavor generating segment 20A may be different between the first segment 25 and the second segment 26. At least one of the first segment 25 and the second segment 26 may contain a fragrance. The structure of the filter unit 20C is arbitrary, and may be a structure having a plurality of segments as described above, or may be composed of a single segment.

The connecting portion 20B has a cylindrical shape. The connecting portion 20B has a paper tube 23 formed in a cylindrical shape by, for example, thick paper.

The lining paper 28 is wound in a cylindrical shape on the outside of the flavor generating segment 20A, the connecting portion 20B, and the filter portion 20C, and these are integrally connected. A vinyl acetate emulsion-based adhesive is applied to one surface (inner surface) of the lining paper 28 on the entire surface (or substantially the entire surface) except for the vicinity of the ventilation holes 24. The plurality of vent holes 24 are formed by laser processing from the outside after the flavor generation segment 20A, the connecting portion 20B, and the filter portion 20C are integrated by the lining paper 28.

The ventilation hole portion 24 has two or more through holes so as to penetrate the connecting portion 20B in the thickness direction. The two or more through holes are formed so as to be arranged radially when viewed from the extension line of the central axis of the flavor suction article 20. In the present embodiment, the ventilation hole portion 24 is provided in the connecting portion 20B, but may be provided in the filter portion 20C. Further, in the present embodiment, the two or more through holes of the ventilation hole portion 24 are provided side by side in a row at regular intervals on one ring, but at regular intervals on the two rings. It may be provided side by side in two rows, or the vent holes 24 in one or two rows may be provided in a discontinuous or irregular arrangement. When the user holds the mouthpiece and sucks it, the outside air is taken into the mainstream smoke through the ventilation hole portion 24.

Hereinafter, another example of the non-combustion heating type flavor suction article will be described with reference to FIGS. 6 to 8.

FIG. 6 is a perspective view showing an example of the appearance of the non-combustion heating type flavor suction article. FIG. 7 is an exploded view showing an example of a non-combustion heating type flavor suction article. The non-combustion heating type flavor suction article 30 (hereinafter, simply referred to as flavor suction article 30) is an electronic cigarette, a nebulizer, or the like, and generates an aerosol according to the suction of the user and provides the aerosol to the user. One continuous suction performed by the user is called a "puff". The flavor suction article 30 adds components such as flavor to the produced aerosol and releases it into the oral cavity of the user.

As shown in FIGS. 6 and 7, the flavor suction article 30 includes a main body 30A, an aerosol source holding portion 30B, and an additive component holding portion 30C. The main body 30A supplies electric power and controls the operation of the entire device. The aerosol source holding unit 30B holds an aerosol source for atomizing to produce an aerosol. The additive component holding unit 30C holds a flavor generating material 38 containing the smoking article sheet, the smoking article multilayer sheet, or a material derived from these, according to the present invention. The user can suck the aerosol to which the flavor or the like is added by holding the mouthpiece at the end on the side of the additive component holding portion 30C. However, since the sheet for smoking articles of the present invention contains an aerosol generating base material, an aerosol generating source other than the sheet is not essential in the above-mentioned flavor suction article.

The flavor suction article 30 is formed by the user or the like assembling the main body 30A, the aerosol source holding portion 30B, and the additive component holding portion 30C. The main body 30A, the aerosol source holding portion 30B, and the additive component holding portion 30C have a columnar shape, a truncated cone shape, or the like having a predetermined diameter, respectively. It can be combined in order. The main body 30A and the aerosol source holding portion 30B are connected by, for example, screwing a male screw portion and a female screw portion provided at their respective ends. Further, the aerosol source holding portion 30B and the additive component holding portion 30C are, for example, fitted with an additive component holding portion 30C having a tapered side surface in a cylindrical portion provided at one end of the aerosol source holding portion 30B. It is combined by. Further, the aerosol source holding portion 30B and the additive component holding portion 30C may be disposable replacement parts.

FIG. 8 is a schematic view showing an example of the inside of the flavor suction article 30. The main body 30A includes a power supply 31, a control unit 32, and a suction sensor 33. The control unit 32 is electrically connected to the power supply 31 and the suction sensor 33, respectively. The power source 31 is a secondary battery or the like, and supplies electric power to the electric circuit included in the flavor suction article 30. The control unit 32 is a processor such as a microcontroller (MCU: Micro-Control Unit), and controls the operation of the electric circuit included in the flavor suction article 30. The suction sensor 33 is a barometric pressure sensor, a flow rate sensor, or the like. When the user sucks from the suction port of the flavor suction article 30, the suction sensor 33 outputs a value corresponding to the negative pressure generated inside the flavor suction article 30 and the flow rate of the gas. That is, the control unit 32 can detect suction based on the output value of the suction sensor 33.

The aerosol source holding unit 30B of the flavor suction article 30 includes a storage unit 34, a supply unit 35, a load 36, and a remaining amount sensor 37. The storage unit 34 is a container for storing a liquid aerosol source that is atomized by heating. The aerosol source is a polyol-based material such as glycerin or propylene glycol. The aerosol source may be a mixed solution further containing a nicotine solution, water, a fragrance and the like. Such an aerosol source is stored in advance in the storage unit 34. The aerosol source may be a solid that does not require a reservoir 34.

The supply unit 35 includes a wick formed by twisting a fiber material such as glass fiber. The supply unit 35 is connected to the storage unit 34. Further, the supply unit 35 is connected to the load 36, or at least a part of the supply unit 35 is arranged in the vicinity of the load 36. The aerosol source penetrates the wick by capillarity and moves to a portion where the aerosol source can be atomized by heating with the load 36. In other words, the supply unit 35 sucks the aerosol source from the storage unit 34 and carries it to or near the load 36. Porous ceramic may be used for the wick instead of the glass fiber.

The load 36 is, for example, a coil-shaped heater, and generates heat when an electric current flows. For example, the load 36 has a positive temperature coefficient (PTC) characteristic, and its resistance value is substantially directly proportional to the heat generation temperature. The load 36 does not necessarily have to have a positive temperature coefficient characteristic, and it is sufficient that the load 36 has a correlation between its resistance value and the exothermic temperature. As an example, the load 36 may have a negative temperature coefficient (NTC: Negative Temperature Coefficient) characteristic. The load 36 may be wound around the outside of the wick, or conversely, the load 36 may be configured such that the wick covers the periphery of the load 36. The power supply to the load 36 is controlled by the control unit 32. When the aerosol source is supplied from the storage unit 34 to the load 36 by the supply unit 35, the aerosol source evaporates due to the heat of the load 36, and an aerosol is generated. Further, when the suction operation by the user is detected based on the output value of the suction sensor 33, the control unit 32 supplies power to the load 36 to generate an aerosol. Further, when the remaining amount of the aerosol source stored in the storage unit 34 is sufficient, a sufficient amount of the aerosol source is supplied to the load 36, and the heat generated in the load 36 is transported to the aerosol source. Therefore, in other words. Since the heat generated by the load 36 is used for raising the temperature and vaporizing the aerosol source, the temperature of the load 36 hardly exceeds a predetermined temperature designed in advance. On the other hand, when the aerosol source stored in the storage unit 34 is depleted, the amount of the aerosol source supplied to the load 36 per hour decreases. As a result, the heat generated by the load 36 is not transported to the aerosol source. In other words, the heat generated by the load 36 is not used for raising the temperature and vaporizing the aerosol source, so that the load 36 overheats and the resistance value of the load 36 is increased accordingly. Also rises.

The remaining amount sensor 37 outputs sensing data for estimating the remaining amount of the aerosol source stored in the storage unit 34 based on the temperature of the load 36. For example, the remaining amount sensor 37 includes a resistor (shunt resistor) for measuring current connected in series with the load 36, and a measuring device connected in parallel with the resistor to measure the voltage value of the resistor. A resistor is a predetermined constant value whose resistance value hardly changes with temperature. Therefore, the current value flowing through the resistor can be obtained based on the known resistance value and the measured voltage value.

The additive component holding portion 30C of the flavor suction article 30 holds the flavor generating material 38 inside. The flavor generating material 38 is in addition to the smoking article sheet, the smoking article multilayer sheet, or a material derived from these. , Ordinary tobacco filler may be included. Ordinary tobacco filler can be composed of tobacco chopped or sheet tobacco chopped to a predetermined width (cut sheet tobacco). Further, the additive component holding portion 30C is provided with a ventilation hole on the mouthpiece side and a portion to be connected to the aerosol source holding portion 30B, and when the user sucks from the mouthpiece, a negative pressure is generated inside the additive component holding portion 30C, and the aerosol source is generated. The aerosol generated in the holding unit 30B is sucked, and components such as nicotine and flavor are added to the aerosol inside the additive component holding unit 30C and released into the oral cavity of the user.

The following materials were used.
1) Wood pulp Pulp made from softwood was used. The average fiber diameter was 33.1 μm. The method for measuring the average fiber diameter will be described later.

2) Non-pulp fiber 1 (dietary fiber)
Citrus fiber (Hervasel AQ Plus CF-D / 100, manufactured by DSP Gokyo Food & Chemical Co., Ltd.), which is a dietary fiber mainly made from citrus albedo, was used. The average fiber diameter was 14.2 μm. The fiber is a sponge-like insoluble fiber.

3) Non-pulp fiber 2 (single fiberized cellulose)
Single fibrous cellulose (manufactured by Daicel FineChem Co., Ltd., Celish (solid content 35% by weight) was used. The average fiber diameter was 13.3 μm.

[Example 1]
A mixture of non-pulp fiber, hydroxypropyl cellulose (manufactured by Nippon Soda Co., Ltd., Cerney H) as a binder, glycerin as an aerosol-producing base material, glycerin fatty acid ester preparation (manufactured by RIKEN Vitamin Co., Ltd., Poem DP-95RF) as an emulsifier, and water. Then, 300 g of slurries 3 to 6 were prepared. The composition was as shown in Table 1.

As a coating base material, a metal plate with a length of 600 mm and a width of 300 mm that can be washed and regenerated was prepared. The slurry was applied to the metal plate using an applicator capable of adjusting the gap. The metal plate on which the wet sheet was formed was dried for 3 hours using a warm air generator (temperature: 100 ° C., wind speed: 1 m / sec) to volatilize the moisture and the like in the wet sheet. The dried sheet was peeled off from the metal plate to obtain a sheet for smoking articles. The sheet was evaluated by the method described later.

[Comparative Example 1]
Comparative slurries C1 and C2 were prepared by the same method as in Example 1 except that wood pulp was used instead of the fiber, and sheets were further produced and evaluated by the same method as in Example 1. The composition was as shown in Table 1.

Table 1 shows these results. There was no big difference in the drying suitability of any of the slurries, and the sheet could be formed in the presence of glycerin, and the desired feeling of smoke volume could be ensured. A sheet having a predetermined thickness can be formed from the slurry prepared in Example 1, and the obtained sheet was easily dispersed or disintegrated by immersing it in water after use. On the other hand, the sheet produced from the comparative slurry using wood pulp was inferior in water dispersibility after use, and it was difficult to form the sheet into a thickness of 50 μm or less. In each sheet, glycerin was slightly liberated on the peeled surface, resulting in stickiness.

[Example 2 and Comparative Example 2] Increasing the amount of binder Sheets were produced and evaluated in the same manner as in Example 1 and Comparative Example 1 except that the amount of binder was increased. The results are shown in Table 1. In Example 2, the affinity between the fiber and water as a solvent was increased and the fluidity of the slurry was improved, and as a result, the coating suitability and the surface condition were improved. This improvement effect by increasing the amount of the binder was more remarkable in Example 2 than in Comparative Example 2. It was presumed that the slurry of Example 2 using fibers having a small fiber diameter tended to increase in viscosity and flowed at a constant velocity between the fibers and the solvent, and the coating suitability was improved. Further, in Example 2, the stickiness and strength were also improved as compared with Example 1. The water dispersibility was slightly delayed as compared with Example 1 because it took time for the hydroxypropyl cellulose to swell, but it was within the permissible range of easy disintegration. In the comparison between the non-pulp fiber 1 and the non-pulp fiber 2, the latter had slightly higher drying suitability and strength.

[Example 3 and Comparative Example 3] Further increase in binder Sheets were produced and evaluated in the same manner as in Example 2 and Comparative Example 2 except that the amount of binder was further increased. In Example 3, the fluidity of the slurry was further improved, the coating suitability was improved, and the stickiness and strength were also improved as compared with Example 2. The water dispersibility was slightly delayed as compared with Example 1 because it took time for the hydroxypropyl cellulose to swell, but it was within the permissible range of easy disintegration. In the comparison between the non-pulp fiber 1 and the non-pulp fiber 2, the latter had slightly higher drying suitability and strength.

[Example 4 and Comparative Example 4] Increased amount of aerosol-producing base material Sheets were produced and evaluated by the same method as in Example 3 and Comparative Example 3 except that the amount of glycerin, which is an aerosol-producing base material, was increased. In Example 4, the feeling of smoke volume was improved as compared with Example 3. In consideration of coating suitability,

slurries

22 and 24 were the most excellent, and they also had good drying suitability.

[Example 5] Combination of fibers Sheets were produced and evaluated in the same manner as in Example 4 except that the non-pulp fibers 1 and the non-pulp fibers 2 were combined in the amounts shown in Table 1. By mixing a plurality of fibers having different morphologies, the affinity between the fibers and the solvent was further enhanced, and the suitability for coating and the sheet strength were improved. Slurry 27 was the best.

[Example 6] Addition of emulsifier To the slurry 27 of Example 5, the amount of emulsifier shown in Table 2 was added to prepare slurries 30 to 32, and a sheet was produced and evaluated by the same method as in Example 5. The stickiness due to the exudation of glycerin to the surface layer of the sheet was improved, but the slurry 31 showed the best results.

[Example 7] Increase in glycerin amount As shown in Table 2, slurries 33 to 35 in which the amount of glycerin was increased were prepared, and sheets were produced and evaluated by the same method as in Example 6. There was no problem with the slurry 34, but with the slurry 35 (50% by weight of glycerin in the sheet), the drying suitability was lowered and the stickiness was increased. Therefore, it was suggested that the upper limit of the amount of glycerin added to the sheet is preferably 45% by weight or less.

[Example 8] Addition of fragrance A fragrance was added to the slurry 31 of Example 6 to prepare a fragrance-containing slurry, and a sheet was produced and evaluated by the same method as in Example 6. When the amount of the fragrance added was 2 to 20% by weight, more preferably 5 to 10% by weight, good flavor was developed without affecting the moldability of the sheet.

[Example 9] Addition of tobacco powder Tobacco powder was added to the slurry 31 of Example 6 to prepare a fragrance-containing slurry, and a sheet was produced and evaluated by the same method as in Example 6. When the amount of the tobacco powder added was 2 to 20% by weight, more preferably 5 to 10% by weight, good flavor was developed without affecting the moldability of the sheet.

[Evaluation method]
<Average fiber diameter>
1. 1. Ethanol was added to each fiber and the fibers were loosened using tweezers.
2. It was dried at room temperature to volatilize and remove ethanol.
3. 3. Using a microscope (manufactured by KEYENCE Corporation: shape analysis laser microscope VK-X1000), the diameters of 100 fibers were measured.
4. The fiber diameter was defined as the length of the minor axis of the measured object, and when the fiber had a flat shape, the width of the plane (main surface) was defined as the fiber diameter.
5. The average value of the measured fiber diameters was taken as the average fiber diameter.

<Applicability>
The coatability (presence or absence of coating unevenness) when the slurry was coated with an applicator was evaluated in the following four stages.
d: Poor coating occurs in places and uniform coating is not possible c: Poor coating does not occur, but uniform coating is difficult due to uneven film thickness b: Uniform coating is possible a: Very Allows uniform coating

<Drying suitability>
The dryness (presence or absence of uneven drying) when the coating film was dried was evaluated in the following four stages.
d: Undried parts occur in places and cannot be dried uniformly c: Undried parts do not occur, but uneven drying makes uniform drying difficult b: Uniform drying is possible a: Very uniform drying is possible

<Sheet thickness>
The film thickness of the obtained sheet was measured using a film thickness meter (AS ONE Corporation: portable film thickness tester) and evaluated in the following three stages.
c: 150 μm or more b: 50 μm or more and less than 150 μm a: less than 50 μm

<Surface condition (sticky)>
The obtained sheet was cut into a length of 50 mm and a width of 50 mm, and five of the cut pieces were stacked and allowed to stand in a constant temperature and humidity chamber (temperature: 22 ° C., relative humidity 60%) for 24 hours to improve the peelability. It was evaluated on the following four stages.
d: Multiple pieces of cut material stick to each other and cannot be easily peeled off c: Partial sticking of the cut material occurs and easy peeling occurs b: Partial sticking of the cut material occurs , Easy peeling is possible a: Very easy peeling is possible without sticking of the cut material.

<Sheet strength>
The strength of the obtained sheet was subjected to a manual tear test and evaluated in the following four stages.
d: brittle and very easily torn c: easily torn b: easy torn was difficult a: torn was difficult

Further, the obtained sheet was cut into a width of 15 mm and a length of 180 mm, and measured using a tensile strength tester (Toyo Seiki Seisakusho Co., Ltd .: Strograph ES) under the conditions of ROADRANGE: 25 and SPEEDRANGE: 50. The tensile strength was evaluated by the tensile stress.

<Smoke volume>
The obtained sheet was cut into a length of about 50 mm and a width of about 50 mm, and used as a flavor generating segment of an outer peripheral heating type RRP, which is a non-combustion heating type smoking article. Using the article, seven well-trained panelists evaluated the feeling of smoke volume and the amount of smoke emitted. Prior to the test, each panelist was asked to fill the non-combustion heating type flavor suction article 20 shown in FIG. 5 with the obtained cut material and try it, and adjusted the feeling to be recognized as b (standard). Was performed, and the result was expressed as the mode.
d: Smoke amount feeling and discharged smoke amount were very small c: Smoke amount feeling and discharged smoke amount was small b: Smoke amount feeling and discharged smoke amount was large a: Smoke amount feeling and discharged smoke amount was very large

<Easy water dispersibility>
A sheet for smoking articles was collected from the non-combustion-heated smoking articles used in the smoke volume test, placed in a beaker containing 50 ml of water, and stirred at 120 rpm for 30 minutes using a 20 mm stirrer. The dispersibility in water at that time was evaluated in the following four stages, and the result was expressed as the mode.
d: Not dispersed c: Not easily dispersed b: Dispersed a: Easily dispersed The obtained sheet was subjected to an aqueous dispersibility test by the official method (JIS P4501) and dispersed in water. Gender was evaluated by dispersion time.

1 Smoking article sheet 1c Cutting fragment of smoking article sheet
10 Heating device 11 Body 12 Heater 13 Metal pipe 14 Battery unit 15 Control unit 16 Recess 17 Vent hole
20 Non-combustion heating type flavor suction article 20A Flavor generation segment 20B Connecting part 20C Filter part
21 Rod-shaped flavor generating material 22 Wrapper 23 Paper tube 24 Vent 25 1st segment 25a 1st filling layer 25b Inner plug wrapper 26 2nd segment 26a 2nd filling layer 26b Inner plug wrapper 27 Outer plug wrapper 28 Lining paper
30 Non-combustion heating type flavor suction article 30A Main body 30B Aerosol source holding part 30C Additive component holding part 31 Power supply 32 Control part 33 Suction sensor 34 Storage part 35 Supply part 36 Load 37 Remaining amount sensor 38 Flavor generation material

Claims

With non-pulp fiber
Contains aerosol-forming substrates,
A sheet for smoking articles having a thickness of 70 μm or less.
The sheet for smoking articles according to claim 1, wherein the non-pulp fiber is derived from a plant.
The sheet for smoking articles according to claim 1 or 2, wherein the non-pulp fiber contains monofiberized cellulose.
The sheet for smoking articles according to any one of claims 1 to 3, wherein the non-pulp fiber contains dietary fiber.
The sheet for smoking articles according to claim 4, wherein the dietary fiber contains citrus fiber.
The sheet for smoking articles according to any one of claims 1 to 5, wherein the average fiber diameter of the non-pulp fiber is 25 μm or less.
The sheet for smoking articles according to any one of claims 1 to 6, which contains 20 to 50% by weight of the aerosol-forming base material.
The sheet for smoking articles according to any one of claims 1 to 7, further comprising a binder.
The sheet for smoking articles according to claim 8, wherein the binder is amphipathic.
The sheet for smoking articles according to claim 8 or 9, wherein the binder is a nonionic cellulose derivative.
The sheet for smoking articles according to any one of claims 1 to 10, further comprising an emulsifier.
The smoking article sheet according to claim 11, which contains 0.1 to 0.3 parts by weight of an emulsifier with respect to 100 parts by weight of the smoking article sheet.
The sheet for smoking articles according to any one of claims 1 to 12, which has been bent, cut, pleated, or crimped.
At least a step of preparing a slurry containing the non-pulp fiber, an aerosol-forming base material, and a medium.
A step of developing the slurry on a substrate to prepare a wet sheet, and a step of drying the wet sheet.
The method for producing a sheet for smoking articles according to any one of claims 1 to 13.
A rod-shaped flavor generating material obtained by folding or winding the smoking article sheet according to any one of claims 1 to 13.
A multi-layer sheet for smoking articles containing multiple sheets,
A) The first smoking article sheet according to any one of claims 1 to 13.
B) includes two or more sheets selected from the group consisting of the second smoking article sheet according to any one of claims 1 to 13 and C) a sheet made of a material different from the smoking article sheet.
A multi-layer sheet for smoking articles, wherein the formulation of the first smoking article sheet and the second smoking article sheet formulation are different or the same.
With a tubular wrapper,
The smoking article sheet according to any one of claims 1 to 13, the smoking article multilayer sheet according to claim 16, or a material derived from these, which is filled in the wrapper.
Flavor generation segment.
The flavor generating segment according to claim 17, wherein the wrapper is filled with the rod-shaped flavor generating material, the cut fragment of the smoking article sheet, or the cut fragment of the smoking article multilayer sheet.
A smoking article comprising the smoking article sheet according to any one of claims 1 to 13, the smoking article multilayer sheet according to claim 16, or a material derived from these.
A smoking article comprising a wrapper composed of the smoking article sheet according to any one of claims 1 to 13 or the smoking article multilayer sheet according to claim 16.
A combustible or non-combustible smoking article comprising the flavor generating segment according to claim 17 or 18.
The combustible or non-combustible smoking according to claim 21, wherein the wrapper is composed of the smoking article sheet according to any one of claims 1 to 13 or the smoking article multilayer sheet according to claim 16. Goods.
The smoking article sheet according to any one of claims 1 to 13, the smoking article multilayer sheet according to claim 16, or a material derived from these.
Materials selected from the group consisting of tobacco sheets, tobacco engravings, and combinations thereof, and
Tobacco filling containing.
The tobacco filling according to claim 23, wherein the multi-layer sheet for smoking articles contains a metal foil as essential as C).
The tobacco filling according to claim 24, wherein the C) and the A) or B) are attached to each other in the multilayer sheet for smoking articles.
A refill containing the tobacco filling according to any one of claims 23 to 25.