JP7034329B2 - Tobacco-containing segments and methods of their manufacture, non-burning heated smoking articles, and non-burning heated smoking systems - Google Patents

Description

The present invention relates to a tobacco-containing segment and a method for producing the same, a non-combustion heated smoking article, and a non-combustion heated smoking system.

Ordinary combustible smoking articles (tobacco) that smoke using combustion are made of dried tobacco leaves carved to a width of about 1 mm, and a tobacco filling containing fragrances, moisturizers, and appropriate moisture, etc., on paper. It has a tobacco-containing segment wrapped in a columnar shape with a wrapper made of paper, and a mouthpiece segment made of fibers made of cellulose acetate or the like or pleated paper wrapped in a columnar shape with a paper wrapper. The tobacco-containing segment and the mouthpiece segment are connected by a lining paper. Smoking is performed by the user igniting the end of the tobacco-containing segment with a lighter or the like and sucking from the end of the mouthpiece segment. The tip of the tobacco-containing segment burns at a temperature exceeding 800 ° C.

As an alternative to such ordinary combustion smoking articles, non-combustion heating smoking articles and non-combustion heating smoking systems that utilize heating instead of combustion have been developed (for example, Patent Documents 1 to 3). The heating temperature is lower than the combustion temperature of the burning smoking article, for example, heating at 400 ° C. or lower. In non-combustion heated smoking articles, the tobacco filling of the tobacco-containing segment contains an aerosol-forming substrate such as glycerin, propylene glycol (PG), triethylcitrate (TEC), triacetin. The aerosol-forming substrate is vaporized by heating and transferred by suction to the cooling segment within the mouthpiece segment, where it is cooled to further ensure aerosol formation. At the time of suction, the aerosol is also sucked together, so that the user's satisfaction can be ensured.

A non-combustion heated smoking system generally comprises a columnar non-combustion heated smoking article having a shape similar to a normal burning smoking article and a heating device including a battery, a controller, a heater and the like. Examples of the heater include a heater by electric resistance and a heater by IH. As a method of heating the heater by electric resistance, a method of heating with a heater from the outside of the non-combustion heated smoking article, a needle-shaped or blade-shaped heater is placed from the tip of the non-combustion heated smoking article into the tobacco-containing segment containing the tobacco filling. Examples thereof include a method of inserting and heating.

Patent No. 5292410 Patent No. 5771338 Special Table 2013-507906 Gazette

However, since the tobacco-containing segment of non-combustion-heated smoking articles contains an aerosol-forming substrate, the paper wrapper around which the tobacco filling is wrapped contains tobacco components, fragrance components, etc. (including the exudation of the aerosol component itself). It may seep out and cause stains on the outer surface of the wrapper.

Further, in a normal combustion smoking article, as the high-temperature combustion portion burns, only the vicinity of the combustion portion in the tobacco-containing segment is heated, and the volatile components present in that portion volatilize and are sucked by the user. That is, the volatile components present in the longitudinal direction of the tobacco-containing segment of the burning smoking article are volatile and supplied almost uniformly throughout the suction. On the other hand, in the non-combustion heated smoking article, the entire longitudinal direction of the tobacco-containing segment is heated by the heater, so that the volatile fragrance component and the aerosol-forming substrate contained in the tobacco-containing segment are sucked in the first half. Many of them may volatilize.

The present invention is a tobacco-containing segment, a non-combustion heated smoking article, which can reduce stains generated on the wrapper of the tobacco-containing segment and can uniformly supply the volatile components contained in the tobacco-containing segment throughout the suction. And to provide a non-combustion heated smoking system.

The tobacco-containing segment according to the present invention is a tobacco-containing segment for a non-combustible heated smoking article, which comprises a tobacco filling containing a tobacco and an aerosol-producing substrate and a wrapper covering the tobacco filling, wherein the wrapper comprises. , A cigarette, and a polymer layer provided on the inner surface of the paper, the polymer layer comprising a polymer and a volatile fragrance component or an aerosol-forming substrate.

The non-combustion heated smoking article according to the present invention includes the tobacco-containing segment and the mouthpiece segment.

The non-combustion heated smoking system according to the present invention includes the non-combustion heated smoking article and a heating device for heating the tobacco-containing segment.

The method for producing a tobacco-containing segment according to the present invention is a step of applying a dispersion liquid in which the polymer and the volatile fragrance component or the aerosol-forming base material are dispersed in an aqueous dispersion medium on the paper and drying the mixture. A step of manufacturing the wrapper is provided.

According to the present invention, a tobacco-containing segment that can reduce stains generated on the wrapper of the tobacco-containing segment and can uniformly supply the volatile components contained in the tobacco-containing segment throughout the suction, non-combustion heated smoking. Goods, and non-combustion heated smoking systems can be provided.

It is sectional drawing which shows an example of the tobacco-containing segment which concerns on this invention. It is sectional drawing which shows an example of the wrapper which concerns on this invention. It is an SEM image which imaged the cross section of an example of the polymer layer which has a porous structure which concerns on this invention. It is sectional drawing which shows an example of the non-combustion heating smoking article which concerns on this invention. An example of the non-combustion heated smoking system according to the present invention, which is (a) a state before the non-combustion heated smoking article is inserted into the heating device, and (b) the non-combustion heated smoking article is inserted into the heating device and heated. It is a schematic diagram which shows the state. It is a graph which shows the menthol amount supply efficiency for each puff in Example 1 and Comparative Example 1.

[Tobacco-containing segment]
The tobacco-containing segment according to the present invention is a tobacco-containing segment for a non-combustible heated smoking article, which comprises a tobacco filling containing a tobacco and an aerosol-producing substrate and a wrapper covering the tobacco filling. Here, the wrapper includes a paper and a polymer layer provided on the inner surface of the paper. In addition, the polymer layer contains a polymer and a volatile fragrance component or an aerosol-forming base material (hereinafter, also referred to as a volatile component).

In the present invention, the wrapper has a polymer layer on the inner surface of the paper. Due to the presence of the polymer layer, it is possible to suppress the exudation of the aerosol-forming base material, the tobacco component, and the volatile fragrance component, which are abundantly contained in the tobacco filling, and it is possible to reduce the stains generated on the wrapper. Further, in the present invention, the polymer layer contains a polymer and a volatile fragrance component or an aerosol-forming base material which is a volatile component. Since the polymer layer contains a volatile fragrance component or an aerosol-forming base material, the volatile fragrance component or the aerosol-forming base material is gradually volatilized and released from the polymer layer by heating. Therefore, the volatile fragrance component or aerosol-forming substrate is uniformly volatilized throughout the suction and supplied to the user. Hereinafter, the details of the present invention will be described.

(Composition of tobacco-containing segments)
The composition of the tobacco-containing segment according to the present invention is a tobacco-containing segment for a non-combustible heated smoking article, wherein the tobacco-containing segment includes a tobacco filling containing tobacco and an aerosol-producing substrate, and a wrapper covering the tobacco filling. The wrapper comprises a cigarette and a polymer layer provided on the inner surface of the paper, and the polymer layer is not particularly limited as long as it includes a tobacco and a volatile fragrance component or an aerosol-forming substrate. .. An example of the tobacco-containing segment according to the present invention is shown in FIG. The tobacco-containing segment shown in FIG. 1 has a tobacco filling 4 containing a tobacco and aerosol-forming substrate and a tubular wrapper 3 covering the tobacco filling 4. The wrapper 3 has a paper 1 on the outer surface side and a polymer layer 2 on the inner surface side. The polymer layer 2 contains a polymer and a volatile fragrance component or aerosol-forming substrate.

The shape of the tobacco-containing segment is not particularly limited, but may be columnar, for example. When the tobacco-containing segment is columnar, the circumference of the tobacco-containing segment is preferably 16 to 25 mm, more preferably 20 to 24 mm, and even more preferably 21 to 23 mm. The length of the tobacco-containing segment in the axial direction, that is, in the horizontal direction in FIG. 1, is 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 tobacco-containing segment is not particularly limited, but may be, for example, a circle, an ellipse, a polygon, or the like.

(Tobacco filling)
The tobacco filling according to the present invention includes tobacco and an aerosol-forming substrate. The tobacco filling may further contain a volatile fragrance component, water and the like. There are no particular restrictions on the size of the tobacco used as the filling material or the method for preparing the tobacco. For example, dried tobacco leaves may be chopped to a width of 0.8 to 1.2 mm. When carved to the above width, the length of the carving is about 5 to 20 mm. Further, dried tobacco leaves may be crushed to have an average particle size of about 20 to 200 μm, homogenized, and sheet-processed, which may be chopped to a width of 0.8 to 1.2 mm. .. When carved to the above width, the length of the carving is about 5 to 20 mm. Further, the above-mentioned sheet-processed material that has been gathered without being carved may be used as the filling material. Various types of tobacco contained in the tobacco filling can be used, whether the dried tobacco leaves are chopped and used as a crushed and homogenized sheet. Yellow varieties, Burley varieties, Orient varieties, native varieties, and other Nicotiana-Tabacam and Nicotiana-rustica varieties can be appropriately blended and used to obtain the desired taste. Details of the tobacco varieties are disclosed in "Tobacco Encyclopedia, Tobacco Academic Studies Center, 2009.3.31". There are a plurality of conventional methods for crushing tobacco and processing it into a homogenized sheet. One is a papermaking sheet made using a papermaking process, and two are homogenized by mixing with an appropriate solvent such as water, and then the homogenized product is thinly cast on a metal plate or metal plate belt. It is a cast sheet made by drying, and three are rolled sheets that are homogenized by mixing with an appropriate solvent such as water and extruded into a sheet shape. Details of the types of the homogenized sheet are disclosed in "Tobacco Encyclopedia, Tobacco Academic Studies Center, 2009.3.31". The aerosol-forming substrate is a material capable of producing an aerosol by heating, and examples thereof include glycerin, propylene glycol (PG), triethylcitrate (TEC), triacetin, and 1,3-butanediol. These may be used alone or in combination of two or more. The filling density of the tobacco filling is not particularly limited, but is usually 250 mg / cm ³ or more, preferably 320 mg / cm ³ or more, from the viewpoint of ensuring the performance of the non-combustion heated smoking article and imparting a good taste. Yes, and usually 520 mg / cm ³ or less, preferably 420 mg / cm ³ or less. Specifically, the range of the content of the tobacco filling in the tobacco-containing segment can be 200 to 400 mg per tobacco-containing segment in the case of a tobacco-containing segment having a circumference of 22 mm and a length of 20 mm, and 250 to 320 mg. Is preferable.

The content of the aerosol-forming substrate in the tobacco filling is not particularly limited, and is usually 5 to 50% by mass, preferably 10 to 20% from the viewpoint of sufficiently producing aerosol and imparting a good taste. It is mass%. When the tobacco filling contains a volatile flavor component, the content of the volatile flavor component in the tobacco filling is not particularly limited, and is usually 10,000 ppm or more, preferably 20,000 ppm or more, from the viewpoint of imparting a good taste. It is more preferably 25,000 ppm or more, usually 50,000 ppm or less, preferably 40,000 ppm or less, and more preferably 33,000 ppm or less.

The method of filling the tobacco filling in the wrapper is not particularly limited, and for example, the tobacco filling may be wrapped in the wrapper, or the tubular wrapper may be filled with the tobacco filling. When the shape of the tobacco has a longitudinal direction such as a rectangular shape, the tobacco may be filled so that the longitudinal direction is an unspecified direction in the wrapper, and the axial direction of the tobacco-containing segment or the axial direction thereof. It may be filled by aligning it so as to be perpendicular to the direction. When the tobacco-containing segment is heated, the tobacco component and aerosol-producing substrate contained in the tobacco filling are vaporized, and these are transferred to the mouthpiece segment by suction.

(Rapper)
The wrapper according to the present invention includes a paper and a polymer layer provided on the inner surface of the paper. An example of the wrapper according to the present invention is shown in FIG. In the wrapper 3 shown in FIG. 2, the polymer layer 2 is provided on the paper 1. The polymer layer 2 contains a volatile fragrance component or an aerosol-forming substrate as the volatile component 5.

The paper is not particularly limited as long as it functions as a support, but from the viewpoint of forming a thick polymer layer, the basis weight of the paper is preferably 25 g / m ² or more, and is 35 to 50 g / m ² . Is more preferable. Further, the air permeability of the paper is preferably low, and the air permeability of 0 is more preferable. The thickness of the paper is not particularly limited, but can be, for example, 30 to 60 μm.

The polymer layer contains the polymer and either the volatile fragrance component and the aerosol-forming substrate, and may contain both the volatile fragrance component and the aerosol-forming substrate. The volatile components contained in the polymer layer are gradually released from the polymer layer when the polymer becomes rubbery or melts by heating, or the aerosol vaporized from the tobacco filling comes into contact with the polymer layer. Guessed.

The type of polymer is not particularly limited, but a biodegradable polymer or an edible polymer is preferable. Further, from the viewpoint of allowing the volatile components to be released from the polymer layer at the heating temperature of the tobacco-containing segment, the glass transition temperature (Tg) of the polymer is preferably 400 ° C. or lower, and preferably 300 ° C. or lower. More preferably, it is more preferably 200 ° C. or lower. The lower limit of Tg of the polymer is not particularly limited, but can be, for example, 40 ° C. or higher. The Tg of the polymer is specifically a value measured by a differential scanning calorimeter (trade name: "DSC7000", manufactured by Hitachi High-Tech Science Corporation). Specific examples of such polymers include polyvinyl alcohol (PVA), polyvinyl alcohol / acrylic acid / methyl methacrylate copolymer (POVACOAT), cellulose acetate, trehalose, maltose, sucrose, maltitol, glucose, wax, wax, and the like. Examples include hardened oil. These may be used alone or in combination of two or more. Among these, PVA or polyvinyl alcohol / acrylic acid / methyl methacrylate copolymer (POVACOAT) is preferable as the polymer from the viewpoint of good coatability on paper.

When the polymer is PVA, the average degree of polymerization of PVA is preferably 1500 or less. When the average degree of polymerization of PVA is 1500 or less, the coatability on paper is improved, and the polymer layer can be uniformly formed on the paper. The average degree of polymerization of PVA is more preferably 100 or more and 1300 or less, further preferably 300 or more and 1200 or less, and particularly preferably 500 or more and 1000 or less. The average degree of polymerization of PVA is a value measured according to the JISK6726-1994 polyvinyl alcohol test method.

When the polymer is PVA, the saponification degree of PVA is preferably 90 mol% or more. When the degree of saponification of PVA is 90 mol% or more, the solubility of PVA in water is lowered, and the release of volatile components due to the dissolution of PVA in water is suppressed, so that the volatile components are stable. Can be retained in the polymer layer. The degree of saponification of PVA is more preferably 90 mol% or more and 99 mol% or less, and further preferably 93 mol% or more and 98% mol% or less. The saponification degree of PVA is a value measured according to the JISK6726-1994 polyvinyl alcohol test method.

The type of volatile fragrance component is not particularly limited, and from the viewpoint of imparting a good taste, acetanisol, acetophenone, acetylpyrazine, 2-acetylthiazole, alfalfa extract, amyl alcohol, amyl butyrate, trans-anetol, star. Anis oil, apple juice, Peruvian balsam oil, honeybee absolute, benzaldehyde, benzoin resinoid, benzyl alcohol, benzyl benzoate, benzyl phenylacetate, benzyl propionate, 2,3-butandione, 2-butanol, butyl butyrate, butyric acid, caramel, Cardamon oil, carobu absolute, β-carotene, carrot juice, L-carboxyl, β-cariophyllene, cassia bark oil, cedarwood oil, celery seed oil, camomil oil, cinnamaldehyde, silicate syrup, cinnamyl alcohol, silicate cinnamyl , Citronella oil, DL-Citronellol, Clarisage extract, 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, ethylmaltor, ethyl octanate, olein Ethyl acid, 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, Fenegrik Absolute, Gene Absolute, Lindou Root Infusion, Geraniol, Geranyl Acetate, Grape Juice, Guayacol, Guava Extra K -4- ( 3-Hydroxy-1-butenyl) -3,5,5-trimethyl-2-cyclohexene-1-one, 4- (para-hydroxyphenyl) -2-butanone, sodium 4-hydroxyundecanoate, immortel 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, linaryl acetate, lobage root oil, Martor, Maple Syrup, Mensole, Menton, L-Mentyl Acetate, Paramethoxybenzaldehyde, Methyl-2-pyrrylketone, Methyl Anthranilate, Methyl Phenylacetate, Methyl Salicylate, 4'-Methylacetophenone, Methylcyclopentenolone, 3-Methylkichi Herb acid, mimosa absolute, toumitsu, myristic acid, nerol, nerolidol, γ-nonalactone, nutmeg oil, δ-octalactone, octanal, octanic acid, orange flower oil, orange oil, oris root oil, palmitic acid, ω-pentadeca Lactone, peppermint oil, petitgrain 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-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-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, vera Toraldehyde, Violet Leaf Absolute, Tobacco Plants Extracts of tobacco leaves, tobacco stems, tobacco flowers, tobacco roots, and tobacco species) are mentioned, with particular preference being menthol. In addition, these volatile fragrance components may be used alone or in combination of two or more. As the aerosol-forming base material contained in the polymer layer, the same aerosol-forming base material contained in the tobacco filling can be used. The aerosol-forming substrate contained in the polymer layer may be the same as or different from the aerosol-forming substrate contained in the tobacco filling.

The polymer layer preferably has a porous structure. For example, when the volatile component is present inside the pores of the porous structure, a part of the porous structure is destroyed by heating, and the volatile component inside is gradually released. This makes it possible to uniformly supply the volatile components throughout the suction. FIG. 3 shows an SEM image obtained by photographing a cross section of an example of a polymer layer having a porous structure according to the present invention at a magnification of 1500. In FIG. 3, the polymer layer 2 formed on the paper 1 has a plurality of fine pores, and a volatile component is present inside the pores.

When the polymer layer has a porous structure, the average pore size of the porous structure is preferably 0.5 μm or more and 20 μm or less, and more preferably 1 μm or more and 10 μm or less. The average pore size of the porous structure is a value measured by CD-SEM.

The method for forming the porous structure is not particularly limited, but as will be described later, for example, when the polymer and the volatile component are emulsified with an emulsifier during preparation of the coating liquid for the polymer layer, micelles are formed. The resulting porous structure can be formed. In this case, the average pore size and porosity of the porous structure can be adjusted by adjusting the amount of the emulsifier used.

The content of the volatile component in the polymer layer is preferably 10% by mass or more and 60% by mass or less with respect to 100% by mass of the polymer layer. When the content is 10% by mass or more, the volatile component can be supplied more uniformly throughout the suction. The content is more preferably 20% by mass or more and 60% by mass or less.

The thickness of the polymer layer is preferably 10 μm or more and 60 μm or less. When the thickness of the polymer layer is 10 μm or more, a sufficient amount of the volatile component can be retained on the paper, and the volatile component can be supplied more uniformly throughout the suction. Further, when the thickness of the polymer layer is 60 μm or less, the thermal conductivity from the heater can be improved when the polymer layer is heated from the outside of the tobacco-containing segment by the heater. The thickness of the polymer layer is more preferably 15 μm or more and 50 μm or less, and further preferably 20 μm or more and 40 μm or less.

[Manufacturing method of tobacco-containing segment]
The method for producing a tobacco-containing segment according to the present invention is a step of applying a dispersion liquid in which the polymer and the volatile fragrance component or the aerosol-forming base material are dispersed in an aqueous dispersion medium on the paper and drying the mixture. A step of manufacturing the wrapper is provided. According to the above method, the tobacco-containing segment according to the present invention can be suitably produced.

First, a dispersion liquid in which a polymer and a volatile fragrance component or an aerosol-forming base material are dispersed in an aqueous dispersion medium is prepared. A dispersion liquid in which the polymer, the volatile fragrance component, and the aerosol-forming base material are dispersed in an aqueous dispersion medium may be prepared. For example, when a solid component such as menthol is used as a volatile fragrance component at room temperature, it is preferable to dissolve the solid component in ethanol or the like in advance. Specifically, for example, the solid component can be dissolved in ethanol, and a polymer and, if necessary, an emulsifier can be added to the solution to prepare a dispersion. Examples of the emulsifier include glycerin fatty acid ester, sucrose fatty acid ester, lecithin and the like. These may be used alone or in combination of two or more.

In the dispersion, the solid component is dissolved in ethanol, and the solution and the polymer are dispersed in the dispersion (aqueous ethanol solution). When the dispersion is applied and dried, ethanol and water are volatilized and removed, so that the portion where ethanol and water were present becomes pores. Therefore, it is considered that the polymer layer formed has a porous structure and the solid component is present inside the pores. When an emulsifier is used, micelles containing ethanol, an emulsifier and the solid component are formed. When ethanol and water are removed, pores are formed in the micelle portion, and the solid component remains inside the pores. Therefore, it is considered that the polymer layer formed has a porous structure and the solid component is present inside the pores. The pore size of the porous structure can be adjusted by the amount of the emulsifier used or the like. For example, the smaller the amount of the emulsifier used, the larger the pore size. A large pore diameter is preferable from the viewpoint of sufficiently retaining the volatile components in the pores and gradually releasing them by heating. That is, it is preferable that the amount of the emulsifier used is small. The concentration of the emulsifier in the dispersion is preferably 0% by mass or more and 10% by mass or less. Further, the concentration of the polymer in the dispersion liquid is preferably 10% by mass or more and 30% by mass or less. When ethanol is used, the ethanol concentration in the dispersion is preferably 5% by mass or more and 15% by mass or less. The concentration of the volatile fragrance component or the aerosol-forming base material in the dispersion is preferably 5% by mass or more and 20% by mass or less.

Next, the dispersion is applied on paper and dried. The amount of the dispersion liquid applied to the paper can be appropriately selected depending on the thickness of the polymer layer to be formed. The drying temperature can be, for example, 60 ° C. or higher and 200 ° C. or lower. This gives a wrapper with a polymer layer formed on the paper.

The method of filling the tobacco filling in the obtained wrapper is not particularly limited, but for example, the tobacco filling in which the tobacco is impregnated with an aerosol-forming substrate or the like may be wrapped in the wrapper, and the tobacco filling may be wrapped in a tubular wrapper. May be filled. When the shape of the tobacco has a longitudinal direction such as a rectangular shape, the tobacco may be filled so that the longitudinal direction is an unspecified direction in the wrapper, and the tobacco-containing segment may be filled in the axial direction or the axial direction. It may be filled by aligning it so as to be perpendicular to the direction.

[Non-combustion heated smoking goods]
The non-combustion heated smoking article according to the present invention includes a tobacco-containing segment and a mouthpiece segment according to the present invention. Since the non-combustion heated smoking article includes the tobacco-containing segment according to the present invention, stains generated on the wrapper can be reduced and volatile components can be uniformly supplied from beginning to end of suction. The non-combustion heated smoking article according to the present invention may have other segments other than the tobacco-containing segment and the mouthpiece segment.

FIG. 4 shows an example of a non-combustion heated smoking article according to the present invention. The non-combustion heated smoking article 30 shown in FIG. 4 includes a tobacco-containing segment 10 according to the present invention and a mouthpiece segment 11. The mouthpiece segment 11 includes a cooling segment 12, a center hole segment 13, and a filter segment 14. During smoking, the tobacco-containing segment 10 is heated and suction is performed from the end of the filter segment 14.

The cooling segment 12 is composed of a tubular member 15. The tubular member 15 can be, for example, a paper tube obtained by processing thick paper into a cylindrical shape. The tubular member 15 and the mouthpiece lining paper 22, which will be described later, are provided with a perforation 16 penetrating both of them. The presence of the perforations 16 introduces outside air into the cooling segment 12 during suction. As a result, the volatile components vaporized by heating the tobacco-containing segment 10 come into contact with the outside air, and the temperature drops, so that the volatile components are liquefied to form an aerosol. The diameter (spread length) of the perforation 16 is not particularly limited, but may be, for example, 0.5 to 1.5 mm. The number of perforations 16 is not particularly limited, and may be one or two or more. For example, a plurality of drilling holes 16 may be provided on the periphery of the cooling segment 12.

The center hole segment is composed of a packed bed having one or more hollow portions and an inner plug wrapper covering the packed bed. For example, the center hole segment 13 is composed of a first packed layer 17 having a hollow portion and a first inner plug wrapper 18 that covers the first packed layer 17. The center hole segment 13 has a function of increasing the strength of the mouthpiece segment 11. The first packed layer 17 has an inner diameter of φ5.0 to φ1.0 mm, for example, which is packed with cellulose acetate fibers at a high density and is cured by adding 6 to 20% by mass of a plasticizer containing triacetin to the mass of cellulose acetate. Can be a rod of. Since the packed bed 17 of the first packed bed has a high packing density of fibers, air and aerosol flow only in the hollow portion at the time of suction, and hardly flow in the packed bed 17 of the first packed bed. In the non-combustion heated smoking article 30, when it is desired to reduce the decrease due to the filtration of the aerosol component in the filter segment 14, shortening the length of the filter segment 14 and replacing it with the center hole segment 13 increases the delivery amount of the aerosol component. It is effective to make it. Since the first packed bed 17 inside the center hole segment 13 is a fiber packed bed, the feeling of touch from the outside during use is less likely to cause discomfort to the user.

The filter segment 14 is composed of a second packed layer 19 and a second inner plug wrapper 20 that covers the second packed layer 19. Since the filter segment 14 has the second packed bed 19 up to the mouthpiece end, the mouthpiece end has the same appearance as a normal combustion smoking article. During suction, air and aerosol pass through the second packed bed 19 and a portion of the aerosol is filtered. The second packed bed 19 can be, for example, a packed bed of cellulose acetate fibers.

The center hole segment 13 and the filter segment 14 are connected by an outer plug wrapper 21. The outer plug wrapper 21 can be, for example, cylindrical paper. Further, the tobacco-containing segment 10, the cooling segment 12, and the connected center hole segment 13 and filter segment 14 are connected by a mouthpiece lining paper 22. These connections can be made by, for example, applying glue such as vinyl acetate glue to the inner surface of the mouthpiece lining paper 22, inserting the above three segments, and winding them. After connection, the cooling segment 12 can be provided with a perforation 16.

The axial length of the non-combustion heated smoking article according to the present invention, that is, the horizontal length in FIG. 4 is not particularly limited, but is preferably 40 mm to 90 mm, more preferably 50 mm to 75 mm, and more preferably 50 mm to 60 mm. Is more preferable. The circumference of the non-combustion heated smoking article is preferably 16 mm to 25 mm, more preferably 20 mm to 24 mm, and even more preferably 21 mm to 23 mm. For example, the length of the tobacco-containing segment 10 is 20 mm, the length of the cooling segment 12 is 20 mm, the length of the center hole segment 13 is 8 mm, and the length of the filter segment 14 is 7 mm. The lengths of these individual segments can be appropriately changed according to manufacturing aptitude, required quality, and the like. Furthermore, even if only the filter segment is arranged on the downstream side of the cooling segment without using the center hole segment, it can function as a non-combustion heated smoking article.

[Non-combustion heating smoking system]
The non-combustion heated smoking system according to the present invention includes a non-combustion heated smoking article according to the present invention and a heating device for heating a tobacco-containing segment. Since the non-combustion heated smoking system includes the non-combustion heated smoking article according to the present invention, stains generated on the wrapper can be reduced and volatile components can be uniformly supplied from beginning to end of suction. The non-combustion heated smoking system according to the present invention is not particularly limited as long as it includes the non-combustion heated smoking article according to the present invention and the heating device, and may have other configurations.

FIG. 5 shows an example of the non-combustion heated smoking system according to the present invention. The non-combustion heated smoking system shown in FIG. 5 includes a non-combustion heated smoking article 30 according to the present invention and a heating device 31 for heating the tobacco-containing segment of the non-combustion heated smoking article 30 from the outside. FIG. 5A shows a state before the non-combustion heated smoking article 30 is inserted into the heating device 31, and FIG. 5B shows a state where the non-combustion heated smoking article 30 is inserted into the heating device 31 and heated. .. The heating device 31 shown in FIG. 5 includes a body 32, a heater 33, a metal tube 34, a battery unit 35, and a control unit 36. The body 32 has a cylindrical recess 37, and the heater 33 and the metal tube 34 are located on the inner side surface of the recess 37 at a position corresponding to the tobacco-containing segment of the non-combustion heated smoking article 30 inserted into the recess 37. Have been placed. The heater 33 can be a heater by electric resistance, and electric power is supplied from the battery unit 35 according to an instruction from the control unit 36 that controls the temperature, and the heater 33 is heated. The heat generated from the heater 33 is transferred to the tobacco-containing segment of the non-combustion heated smoking article 30 through the metal tube 34 having high thermal conductivity. In FIG. 5B, since it is schematically shown, there is a gap between the outer circumference of the non-combustion heated smoking article 30 and the inner circumference of the metal tube 34, but in reality, heat is efficiently transferred. For the purpose, it is desirable that there is no gap between the outer circumference of the non-combustion heated smoking article 30 and the inner circumference of the metal tube 34. The heating device 31 heats the tobacco-containing segment of the non-combustion heated smoking article 30 from the outside, but may be heated from the inside.

The heating temperature by the heating device is not particularly limited, but is preferably 400 ° C. or lower, more preferably 150 ° C. or higher and 400 ° C. or lower, and further preferably 200 ° C. or higher and 350 ° C. or lower. The heating temperature indicates the temperature of the heater of the heating device.

In the non-combustion heated smoking system according to the present invention, a polymer layer containing a volatile component is provided on the inner surface of the wrapper of the tobacco-containing segment. Since the polymer layer is located near the heater of the heating device during heating, the volatile components contained in the polymer layer are gradually released, but a sufficient amount is released over a long period of time.

Hereinafter, the present invention will be described in more detail with reference to Examples, but the present invention is not limited to these Examples.

[Example 1]
(Making a wrapper)
A liquid prepared by dissolving 21 g of menthol in 9 g of ethanol was prepared (hereinafter referred to as liquid A). 45 g of PVA (Tg: 58 ° C., average degree of polymerization: 500, saponification degree: 85 to 89 mol%) was dispersed and mixed with 116 g of water heated to 80 ° C. Liquid A was added thereto with sufficient stirring with a stirrer to prepare a dispersion liquid. The dispersion is applied on one side (engraved side) on paper (trade name: 50NFB, manufactured by Nippon Paper Papylia, basis weight: 50 g / m ² ) and dried at 60 to 90 ° C. to a thickness of 20 to 20 on the paper. A wrapper was obtained in which a 30 μm polymer layer was formed. When the cross section of the polymer layer was observed by SEM, it was confirmed that the polymer layer had a porous structure.

(Preparation of non-combustion heated smoking articles for evaluation)
A commercially available non-combustion heated smoking article (trade name: global, manufactured by British American Tobacco) was prepared. The non-combustion heated smoking article does not contain a volatile fragrance component, and the portion corresponding to the tobacco-containing segment contains tobacco and glycerin as an aerosol-forming substrate. Further, the wrapper of the portion corresponding to the tobacco-containing segment is composed of only paper. The wrapper corresponding to the tobacco-containing segment of the non-combustion heated smoking article was removed, and a wrapper prepared instead was wound to obtain a non-combustion heated smoking article for evaluation.

(Evaluation of menthol supply in smoking)
Using a heating device (trade name: glo, manufactured by British American Tobacco) corresponding to the commercially available non-combustion heated smoking article, 220 of the portion corresponding to the tobacco-containing segment of the non-combustion heated smoking article for evaluation. Heated at ° C. Smoking was performed under Canadian forced smoking conditions, components in the aspirated aerosol were collected, and the sample extracted by shaking with isopropanol (IPA) was analyzed by GC. Specifically, based on the CIR method (Canada forced smoking condition method), 55 ml of each puff was sucked (1 puff was sucked at intervals of 30 seconds, that is, sucked for 2 seconds and waited for 28 seconds), for a total of 4 puffs. The components in the aspirated aerosol were collected by a Cambridge filter. The components collected by the Cambridge filter were extracted by shaking with 10 ml of isopropanol (IPA) as an extraction solvent for 20 minutes under the condition of 200 rmp. The obtained extract was subjected to GC analysis under the following conditions, and the amount of menthol was quantified for each puff.
Injection port temperature: 240 ° C
Oven temperature: After holding at 150 ° C for 1.3 minutes, raise the temperature to 240 ° C at 70 ° C / min and hold for 5 minutes Column: Product name: DB-WAX 10 m x 0.18 mm x 0.18 μm, detected by Agilent. Vessel: FID
FIG. 6 shows the menthol supply efficiency showing the ratio of the amount of menthol in the sucked aerosol to the amount of menthol contained in the non-combustion heated smoking article for each puff. Table 1 shows the total menthol amount (total menthol amount) in the aerosol sucked between the four puffs and the total menthol supply efficiency of the four puffs.

(Evaluation of stains)
After storing the closed container containing the non-combustion heated smoking article for evaluation for 4 weeks in an environment of a temperature of 22 ° C. and a relative humidity of 60%, the non-combustion heated smoking article was taken out from the container and generated on the wrapper surface. The number of stains was visually evaluated. In the evaluation, those having a maximum diameter (L) of 0.9 mm ≤ L <2.7 mm (small stains) and those having a maximum diameter of 2.7 mm ≤ L (large stains) are measured separately. Was done. The results of this evaluation are shown in Table 2. In this evaluation, the unit of the stain is each stain that can be approximated to an ellipse (including a circle) regardless of whether or not it is independent of other stains. The degree of stain occurrence was shown by the number of stains generated in the evaluation of 200 non-combustion heated smoking articles, the size of the stains, and the rate of occurrence of each level.

[Comparative Example 1]
A commercially available non-combustion heated smoking article (trade name: glo Menthol, manufactured by British American Tobacco) was prepared. The portion corresponding to the tobacco-containing segment of the non-combustible heated smoking article contains menthol as a volatile fragrance component and glycerin as an aerosol-forming substrate. Further, the wrapper of the portion corresponding to the tobacco-containing segment is composed of only paper. The amount of menthol contained in the non-combustion heated smoking article is larger than the amount of menthol contained in the evaluation non-combustion heated smoking article produced in Example 1.

The evaluation was carried out in the same manner as in Example 1 except that the non-combustion heated smoking article was used. The results are shown in FIG. 6 and Tables 1 and 2.

As shown in FIG. 6, in Example 1 in which the wrapper was provided with the polymer layer containing menthol, the menthol supply efficiency was substantially uniform in the first to fourth puffs. It is presumed that menthol was gradually released from the polymer layer. On the other hand, in Comparative Example 1 in which the tobacco filling contained menthol and the wrapper was not provided with the polymer layer containing menthol, the menthol supply efficiency decreased linearly from the first to the fourth puff. It is presumed that most of the menthol contained in the tobacco filling vaporized in the first half of suction.

Further, as shown in Table 1, the menthol supply efficiency was higher in Example 1 than in Comparative Example 1 in the total of 4 puffs. It is presumed that this is because the menthol is contained in the polymer layer of the wrapper in Example 1, and the polymer layer of the wrapper is located in the vicinity of the heater of the heating device during heating. Since the initial amount of menthol contained in the non-combustion heated smoking article is different between Example 1 and Comparative Example 1, comparisons were made based on the menthol supply efficiency in FIGS. 6 and 1.

Further, as shown in Table 2, no stain was confirmed on the wrapper surface in Example 1, whereas a stain was confirmed in Comparative Example 1. It is presumed that in Example 1, the presence of the polymer layer could suppress the exudation of the aerosol-forming base material, the tobacco component, and the volatile fragrance component contained in the tobacco filling.

1 Paper 2 Polymer layer 3 Wrapper 4 Tobacco filling 5 Volatile component 10 Tobacco-containing segment 11 Mouthpiece segment 12 Cooling segment 13 Center hole segment 14 Filter segment 15 Cylindrical member 16 Perforation 17 First filling layer 18 First inner Plug wrapper 19 Second filling layer 20 Second inner plug wrapper 21 Outer plug wrapper 22 Mouthpiece Lining paper 30 Non-combustion heating Smoking article 31 Heating device 32 Body 33 Heater 34 Metal tube 35 Battery unit 36 Control unit 37 Recess

Claims (12)

A tobacco-containing segment for a non-combustible heated smoking article comprising a tobacco filler containing a tobacco and aerosol-producing substrate and a wrapper covering the tobacco filler.
The wrapper comprises a paper and a polymer layer provided on the inner surface of the paper.
A tobacco-containing segment in which the polymer layer contains a polymer and a volatile fragrance component or an aerosol-forming substrate. The tobacco-containing segment according to claim 1, wherein the polymer has a glass transition temperature of 400 ° C. or lower. The tobacco-containing segment according to claim 1 or 2, wherein the polymer is polyvinyl alcohol. The tobacco-containing segment according to claim 3, wherein the polyvinyl alcohol has an average degree of polymerization of 1500 or less. The tobacco-containing segment according to claim 3 or 4, wherein the degree of saponification of polyvinyl alcohol is 90 mol% or more. The tobacco-containing segment according to any one of claims 1 to 5, wherein the polymer layer has a porous structure. The tobacco-containing segment according to claim 6, wherein the volatile fragrance component or the aerosol-forming substrate is present inside the pores of the porous structure. The tobacco-containing segment according to any one of claims 1 to 7, wherein the polymer layer contains the volatile fragrance component and the aerosol-forming substrate. A non-combustion heated smoking article comprising the tobacco-containing segment according to any one of claims 1 to 8 and a mouthpiece segment. The non-combustion heated smoking article according to claim 9,
A heating device that heats the tobacco-containing segment,
A non-combustion heating smoking system. The non-combustion heating smoking system according to claim 10, wherein the heating temperature by the heating device is 400 ° C. or lower. A claim comprising a step of manufacturing the wrapper through a step of applying a dispersion liquid in which the polymer and the volatile fragrance component or the aerosol-forming base material are dispersed in an aqueous dispersion medium onto the paper and drying the mixture. The method for producing a tobacco-containing segment according to any one of 1 to 8.

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