KR102660689B1 - Tobacco-containing segments and methods of manufacturing same, non-combustible heated smoking articles, and non-combustible heated smoking systems - Google Patents

Abstract

A tobacco-containing segment is provided that can reduce stains occurring on the wrapper of the tobacco-containing segment and can uniformly supply volatile components contained in the tobacco-containing segment throughout suction. A tobacco-containing segment for a non-combustible heated smoking article comprising a tobacco filling comprising tobacco and an aerosol-generating substrate, and a wrapper covering the tobacco filling, wherein the wrapper comprises paper and a polymer layer formed on an inner surface of the paper. A tobacco-containing segment, wherein the polymer layer includes a polymer and a volatile flavoring ingredient or an aerosol-generating substrate.

Description

Tobacco-containing segments and methods of manufacturing same, non-combustible heated smoking articles, and non-combustible heated smoking systems

The present invention relates to tobacco-containing segments and methods of making the same, non-combustible heated smoking articles, and non-combustible heated smoking systems.

A typical combustion smoking article (cigarette) for smoking using combustion is a paper-based filling containing dried tobacco leaves chopped into pieces of about 1 mm, to which flavoring, humectant, and appropriate moisture have been added. It has a tobacco-containing segment wrapped circumferentially with a wrapper, and a mouthpiece segment made of fiber or corrugated paper made of cellulose acetate or the like, wound circumferentially with a paper wrapper. The tobacco-containing segment and the mouthpiece segment are connected with lining paper. Smoking is accomplished 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 tobacco-containing segment tips are burned at temperatures exceeding 800°C.

As a replacement for such conventional combustion smoking articles, non-combustion heated smoking articles and non-combustion heated smoking systems that use heating instead of combustion have been developed (for example, Patent Documents 1 to 3). The heating temperature is lower than the combustion temperature in combustion smoking articles, for example, heated at 400°C or lower. In non-combustible heated smoking articles, the tobacco fill of the tobacco-containing segments includes an aerosol-generating substrate such as glycerin, propylene glycol (PG), triethyl citrate (TEC), triacetin, etc. The aerosol-generating substrate is vaporized by heating and moved by suction to the cooling segment within the mouthpiece segment, where it is cooled to ensure more aerosol generation. When inhaling, the aerosol is also inhaled, ensuring user satisfaction.

A non-combustible heated smoking system generally includes a cylindrical non-combustible heated smoking article having a shape similar to a conventional combustion smoking article, and a heating device including a battery, a controller, a heater, etc. Heaters include heaters based on electric resistance and heaters based on IH. Methods for heating a non-combustible heated smoking article with a heater using electric resistance include a method of heating the non-combustible heated smoking article with a heater from the outside, and heating by inserting a needle-shaped or blade-shaped heater into the tobacco-containing segment containing the tobacco filling from the tip of the non-combusted heated smoking article. How to do it, etc.

Patent Document 1: Japanese Patent No. 5292410 Patent Document 2: Japanese Patent No. 5771338 Patent Document 3: Japanese Patent Publication No. 2013-507906

However, since the tobacco-containing segment of the non-combustible heated smoking article includes an aerosol-generating substrate, tobacco components, flavoring components, etc. (including the aerosol component itself) seep into the paper wrapper around the tobacco filling, Stains may appear on the outer surface of the wrapper.

Additionally, in a typical combustion smoking article, as the high-temperature combustion portion burns out, only the vicinity of the combustion portion among the tobacco-containing segments is heated, and volatile components present in that portion volatilize and are absorbed by the user. That is, the volatile components present in the longitudinal direction of the tobacco-containing segment of the combustion smoking article are volatilized and supplied almost uniformly throughout inhalation. On the other hand, in non-combustion heated smoking articles, since the entire longitudinal direction of the tobacco-containing segment is heated by the heater, most of the volatile components such as volatile flavor components and aerosol-generating substances contained in the tobacco-containing segment are absorbed in the overall inhalation. There are cases where it volatilizes.

The present invention provides a tobacco-containing segment, a non-combustible heated smoking article, which can reduce stains occurring on the wrapper of the tobacco-containing segment and can supply volatile components contained in the tobacco-containing segment uniformly throughout the period of inhalation, and The object is to provide a non-combustion heated smoking system.

A tobacco-containing segment of interest to the present invention is a tobacco-containing segment for a non-combustible heated smoking article comprising a tobacco filling comprising tobacco and an aerosol-generating substrate, and a wrapper covering the tobacco filling, wherein the wrapper comprises paper, It includes a polymer layer formed on the inner surface of the paper, wherein the polymer layer includes a polymer and a volatile fragrance ingredient or an aerosol-generating substrate.

A non-combustible heated smoking article according to the present invention includes the tobacco-containing segment and a mouthpiece segment.

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

The method for producing a tobacco-containing segment according to the present invention includes applying a dispersion liquid in which the polymer and the volatile flavor component or the aerosol-generating base are dispersed in an aqueous dispersion medium onto the paper and drying the wrapper. Equipped with a manufacturing process.

According to the present invention, stains occurring on the wrapper of the tobacco-containing segment can be reduced, and volatile components contained in the tobacco-containing segment can be uniformly supplied throughout suction, a non-combustible heated smoking article, and a non-combustion heated smoking system.

1 is a cross-sectional view showing an example of a tobacco-containing segment according to the present invention.
Fig. 2 is a cross-sectional view showing an example of a wrapper according to the present invention.
Figure 3 is an SEM image of a cross section of an example of a polymer layer having a porous structure according to the present invention.
Fig. 4 is a cross-sectional view showing an example of a non-combustible heated smoking article according to the present invention.
Figure 5 shows an example of a non-combustion heated smoking system related to the present invention, (a) a state before inserting a non-combustion heated smoking article into a heating device, (b) heating a non-combustion heated smoking article by inserting it into the heating device. This is a schematic diagram showing the state.
Figure 6 is a graph showing the menthol amount supply efficiency for each puff in Example 1 and Comparative Example 1.

[Tobacco-containing segment]

The tobacco-containing segment of interest to the present invention is a tobacco-containing segment for a non-combustible heated smoking article comprising a tobacco filling comprising tobacco and an aerosol-generating substrate, and a wrapper covering the tobacco filling. Here, the wrapper includes paper and a polymer layer formed on the inner surface of the paper. Additionally, the polymer layer contains a polymer and a volatile fragrance component or aerosol-generating 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. The presence of the polymer layer can suppress the oozing of aerosol-generating substrates, tobacco components, and volatile flavor components, which are often contained in cigarette fillings, and reduce stains on the wrapper. Additionally, in the present invention, the polymer layer includes a polymer and a volatile fragrance component or an aerosol-generating base material that is a volatile component. When the polymer layer includes a volatile fragrance ingredient or an aerosol-generating base material, the volatile fragrance ingredient or an aerosol-generating base material is gradually volatilized and released from the polymer layer by heating. Accordingly, the volatile fragrance ingredient or aerosol-generating base volatilizes uniformly throughout inhalation and is supplied to the user. Hereinafter, the details of the present invention will be described.

(Composition of tobacco-containing segments)

The configuration of the tobacco-containing segment related to the present invention is that the tobacco-containing segment is a tobacco-containing segment for a non-combustible heated smoking article comprising a tobacco filling comprising tobacco and an aerosol-generating substrate, and a wrapper covering the tobacco filling, the wrapper It includes paper and a polymer layer formed on the inner surface of the paper, and is not particularly limited as long as the polymer layer includes a polymer, a volatile fragrance ingredient, or an aerosol-generating base material. An example of a tobacco-containing segment related to the present invention is shown in Fig. 1. The tobacco-containing segment shown in Figure 1 has a tobacco filling 4 containing tobacco and an aerosol-generating substrate, and a conventional wrapper 3 covering the tobacco filling 4. The wrapper 3 has paper 1 on the outer side and a polymer layer 2 on the inner side. The polymer layer 2 includes a polymer and a volatile fragrance ingredient or aerosol-generating 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 circumferential length 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. Additionally, the length of the tobacco-containing segment in the axial direction, that is, the horizontal direction in FIG. 1, is preferably 20 to 70 mm, more preferably 20 to 50 mm, and still more preferably 20 to 30 mm. The cross-sectional shape of the tobacco-containing segment is not particularly limited, but may be, for example, circular, oval, polygonal, etc.

(cigarette filling)

Tobacco fillings relevant to the present invention include tobacco and an aerosol-generating substrate. The tobacco filling may further contain volatile flavoring ingredients, water, etc. There are no particular restrictions on the size of the tobacco used as a filler or its preparation method. For example, dried tobacco leaves finely chopped to a width of 0.8 to 1.2 mm may be used. When cut into pieces to the above width, the length of the pieces is approximately 5 to 20 mm. Additionally, dried tobacco leaves may be ground to an average particle size of approximately 20 to 200 μm, processed into sheets, and finely chopped to a width of 0.8 to 1.2 mm. When cut into pieces to the above width, the length of the pieces is approximately 5 to 20 mm. In addition, the sheet processed above may be used as a filler after being gathered and processed without chopping it into small pieces. Whether dried tobacco leaves are chopped into small pieces or crushed and used as a homogenized sheet, various types of tobacco can be used in the tobacco filling. Yellow species, burley species, oriental species, native species, and other Nicotiana/tabacum or Nicotiana/rustica species can be appropriately blended and used to achieve the desired taste. Details of the tobacco varieties are disclosed in "Tobacco Dictionary, Tobacco Research Center, March 31, 2009." There are multiple conventional methods for grinding tobacco and processing it into homogenized sheets. The first is a paper sheet made using a papermaking process, and the second is a paper sheet made by mixing an appropriate solvent such as water to homogenize it, then casting the homogenized material thinly on a metal plate or metal plate belt and drying it. It is a cast sheet made by mixing an appropriate solvent such as water and homogenizing it, and then there is a rolled sheet that is extruded into a sheet shape. Details of the types of equalization sheets are disclosed in "Tobacco Dictionary, Tobacco Research Center, March 31, 2009." Aerosol-generating substrates are materials that can generate aerosols by heating, such as glycerin, propylene glycol (PG), triethyl citrate (TEC), triacetin, and 1,3-butane. Diol, etc. can be mentioned. These may be used one type, or two or more types may be used together. The filling density of the tobacco filling is not particularly limited, but is usually 250 mg/cm3 or more, preferably 320 mg/cm3 or more, from the viewpoint of ensuring the performance of a non-combustible heated smoking article and providing a good taste. And, it is usually 520 mg/cm3 or less, preferably 420 mg/cm3 or less. Specifically, the range of the content of the tobacco filler in the tobacco-containing segment is 200 to 400 mg per tobacco-containing segment in the case of a tobacco-containing segment with a circumference of 22 mm and a length of 20 mm, and 250 to 320 mg is preferred. .

The content of the aerosol-generating base material in the tobacco filling is not particularly limited, and is usually 5 to 50% by mass, preferably 10 to 20% by mass, from the viewpoint of sufficiently generating an aerosol and providing a good taste. When the tobacco filling contains a volatile flavoring component, the content of the volatile flavoring component in the tobacco filling is not particularly limited, and from the viewpoint of providing a good taste, it is usually 10,000 ppm or more, preferably 20,000 ppm or more, and more preferably is 25,000 ppm or more, and is 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, but for example, the tobacco filling may be wrapped in a wrapper, or the tobacco filling may be filled in a normal wrapper. When the shape of the cigarette has a longitudinal direction such as a rectangular shape, the cigarette may be filled so that the longitudinal direction is oriented in an unspecified direction within the wrapper, and may be oriented in the axial direction of the tobacco-containing segment or in a direction perpendicular to the axial direction. It may be aligned and charged. As the tobacco-containing segment is heated, the tobacco components contained in the tobacco filling, the aerosol-generating substrate, are vaporized and, by suction, they transfer to the mouthpiece segment.

(rapper)

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

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/m2 or more, and more preferably 35 to 50 g/m2. In addition, it is preferable that the paper have low breathability, and more preferably, the breathability is 0. The thickness of the paper is not particularly limited, but may be, for example, 30 to 60 μm.

The polymer layer contains a polymer and either a volatile fragrance component or an aerosol-generating base material, and may contain both a volatile fragrance component and an aerosol-generating base material. It is assumed that the volatile components contained in the polymer layer are gradually released from the polymer layer when the polymer turns into a rubbery state or dissolves when heated, or when an aerosol vaporized from a cigarette filling contacts the polymer layer.

The type of polymer is not particularly limited, but biodegradable polymers and edible polymers are preferable. In addition, from the viewpoint of releasing volatile components 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, more preferably 300°C or lower, and 200°C or lower. It is more desirable. The lower limit of the Tg of the polymer is not particularly limited, but may be, for example, 40°C or higher.

In addition, the Tg of the polymer is specifically a value measured with a differential scanning calorimeter (brand name: "DSC7000", manufactured by Hitachi High-Tech Science). Specific examples of such polymers include polyvinyl alcohol (PVA), polyvinyl alcohol/acrylic acid/methyl methacrylate copolymer (POVACOAT), cellulose acetate, trehalose, maltose, sucrose, maltitol, glucose, beeswax, Wax, hydrogenated oil, etc. can be mentioned. These may be used one type, or two or more types may be used together. Among these, PVA or polyvinyl alcohol/acrylic acid/methyl methacrylate copolymer (POVACOAT) is preferred 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, coatability on paper is improved, and a polymer layer can be formed uniformly on paper. The average degree of polymerization of PVA is more preferably 100 to 1300, more preferably 300 to 1200, and especially preferably 500 to 1000. In addition, the average degree of polymerization of PVA is a value measured based on the JISK6726-1994 polyvinyl alcohol test method.

Additionally, 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 reduced and the release of volatile components due to PVA dissolving in water is suppressed, so the volatile components can be stably maintained in the polymer layer. The saponification degree of PVA is more preferably 90 mol% or more and 99 mol% or less, and even more preferably 93 mol% or more and 98 mol% or less. In addition, the saponification degree of PVA is a value measured based on the JISK6726-1994 polyvinyl alcohol test method.

The type of volatile flavor component is not particularly limited, and from the viewpoint of providing a good taste, it includes acetonisole, acetophenone, acetylpyrazine, 2-acetylthiazole, alfalfa extract, amyl alcohol, amyl butyrate, trans-anethole, Star anise oil, apple juice, Peruvian balsam oil, beeswax absolute, benzaldehyde, benzoin resinoid, benzyl alcohol, benzyl benzoate, benzyl phenylacetate, benzyl propionate, 2,3-butanedione, 2-butanol, beauty. Butyl ricate, butyric acid, caramel, cardamom oil, carob absolute, β-carotene, carrot juice, L-carbon, β-caryophyllene, cassia bark oil, cedarwood oil, celery seed oil, chamomile oil, cinnamaldehyde, cinnamic acid. , cinnamyl alcohol, cinnamyl cinnamate, citronella oil, DL-citronellol, clary sage extract, cocoa, coffee, cognac oil, coriander oil, cuminaldehyde, davana oil, δ-decalactone, γ-decalactone, Decane acid, dill herb oil, 3,4-dimethyl-1,2-cyclopentanedione, 4,5-dimethyl-3-hydroxy-2,5-dihydrofuran-2-one, 3 ,7-dimethyl-6-octenoic acid, 2,3-dimethylpyrazine, 2,5-dimethylpyrazine, 2,6-dimethylpyrazine, ethyl 2-methylbutyrate, ethyl acetate, ethyl butyrate, hexene Ethyl phosphate, ethyl isovalerate, ethyl lactate, ethyl laurate, ethyl levulinate, ethyl maltol, ethyl octamate, ethyl oleate, ethyl palmitate, ethyl phenylacetate, ethyl propionate, ethyl stearate, ethyl valerate, Ethylvanillin, ethylvanillin glucoside, 2-ethyl-3,(5 or 6)-dimethylpyrazine, 5-ethyl-3-hydroxy-4-methyl-2(5H)-furanone, 2-ethyl-3- Methylpyrazine, eucalyptol, fenugreek absolute, gene absolute, gentian root infusion, geraniol, geranyl acetate, grape juice, guaiacol, guava extract, γ-heptalactone, γ-hexalactone, hexanoic acid, cis. -3-hexen-1-ol, hexyl acetate, hexyl alcohol, hexyl phenylacetate, honey, 4-hydroxy-3-pentenoic acid lactone, 4-hydroxy-4-(3-hydroxy-1-butenyl) -3,5,5-trimethyl-2-cyclohexen-1-one, 4-(para-hydroxyphenyl)-2-butanone, sodium 4-hydroxyundecanoate, immortel absolute, β-io Rice paddy, isoamyl acetate, isoamyl butyrate, isoamyl phenylacetate, isobutyl acetate, isobutyl phenylacetate, jasmine absolute, kolanut tincture, labdanum oil, lemon terpeneless oil, licorice extract, linalool, triacetate. Nalyl, lovey root oil, maltol, maple syrup, menthol, menthone, L-menthyl acetate, paramethoxybenzaldehyde, methyl-2-pyrrolyl ketone, methyl anthranilate, methyl phenylacetate, methyl salicylate, 4'-methylaceto. Phenone, methylcyclopentenolone, 3-methylvaleric acid, mimosa absolute, molasses, myristic acid, nerol, nerolidol, γ-nonalactone, nutmeg oil, δ-octalactone, octanal, octaic acid, orange flower. Oil, orange oil, orris root oil, palmitic acid, ω-pentadecalactone, peppermint oil, petitgrain Paraguay oil, phenethyl alcohol, phenethyl phenylacetate, phenylacetic acid, piperonal, plum extract, propenylguaethol. , propyl acetate, 3-propylidene phthalide, plum juice, pyruvic acid, raisin extract, rose oil, rum, sage oil, sandalwood oil, spearmint oil, Styrox absolute, marigold oil, tea distillate, α-ter Pineol, 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-buten-4-one, 2,6,6-trimethyl-2-cyclohexen-1,4-dione, 4-(2,6,6-trimethyl-1,3-cyclohexadienyl)2-buten-4-one , 2,3,5-trimethylpyrazine, γ-undecalactone, γ-valerolactone, vanilla extract, vanillin, veratrialdehyde, violet leaf absolute, tobacco plant (tobacco leaf, tobacco stem, tobacco flower, tobacco root) , and tobacco seeds), and menthol is particularly preferred. In addition, these volatile fragrance components may be used individually or in combination of two or more types. The aerosol-generating base material included in the polymer layer can be the same as the aerosol-generating base material included in the tobacco filling. The aerosol-generating substrate contained in the polymer layer may be the same as or different from the aerosol-generating substrate contained in the tobacco filling.

The polymer layer preferably has a porous structure. For example, when a volatile component exists inside the pores of a porous structure, a part of the porous structure is destroyed by heating, and the volatile component inside is gradually released. Thereby, the volatile component can be supplied uniformly throughout suction. Figure 3 shows an SEM image taken at 1500 times a cross-section of an example of a polymer layer having a porous structure according to the present invention. In Fig. 3, the polymer layer 2 formed on the paper 1 has a plurality of fine pores, and volatile components exist within the pores.

When the polymer layer has a porous structure, the average pore diameter 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. Additionally, the average pore diameter of the porous structure is a value measured by CD-SEM.

The method of forming the porous structure is not particularly limited, but for example, as described later, when preparing a coating solution for a polymer layer, micelles are formed when the polymer and volatile components are emulsified with an emulsifier, so the porous structure derived from the micelles is formed. A structure can be formed. In this case, the average pore diameter and porosity of the porous structure can be adjusted according to the amount of the emulsifier used.

The content of volatile components 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, volatile components can be supplied more uniformly throughout suction. It is more preferable that the above content is 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 volatile components can be maintained on the paper, and the volatile components can be supplied more uniformly throughout suction. Additionally, when the thickness of the polymer layer is 60 μm or less, thermal conductivity from the heater can be improved when heating the tobacco-containing segment with a heater from the outside. The thickness of the polymer layer is more preferably 15 μm or more and 50 μm or less, and more preferably 20 μm or more and 40 μm or less.

[Method for producing tobacco-containing segments]

The method for producing a tobacco-containing segment according to the present invention includes applying a dispersion liquid in which the polymer and the volatile flavor component or the aerosol-generating base are dispersed in an aqueous dispersion medium onto the paper and drying the wrapper. Equipped with a manufacturing process. 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 ingredient or aerosol-generating base material are dispersed in an aqueous dispersion medium is prepared. You may prepare a dispersion in which the polymer, volatile fragrance component, and aerosol-generating base material are dispersed in an aqueous dispersion medium. For example, when using a solid component at room temperature, such as menthol, as a volatile fragrance component, it is preferable to dissolve the solid component in ethanol or the like in advance. Specifically, for example, the above solid component can be dissolved in ethanol, and a polymer and, if necessary, an emulsifier can be added to prepare a dispersion. Examples of emulsifiers include glycerin fatty acid ester, sucrose fatty acid ester, lecithin, etc. These may be used one type, or two or more types may be used together.

In the dispersion, the solid component is dissolved in ethanol, and the dissolved product and polymer are dispersed in the dispersion (ethanol aqueous solution). When the dispersion is applied and dried, the ethanol and water are volatilized and removed, so the area where the ethanol and water existed becomes a hole. Therefore, it is believed that the formed polymer layer has a porous structure, and the solid component is present inside the pores. Additionally, when an emulsifier is used, micelles containing ethanol, the emulsifier, and the above solid component are formed. When ethanol and water are removed, holes are formed in the micelle portion, and the solid component remains inside the holes. Therefore, it is believed that the formed polymer layer has a porous structure, and the solid component is present inside the pores. The pore diameter of the porous structure can be adjusted depending on the amount of emulsifier used, etc. For example, the smaller the amount of emulsifier used, the larger the pore diameter. From the viewpoint of sufficiently retaining volatile components in the pores and gradually releasing them by heating, a larger pore diameter is preferable. In other words, it is preferable that the amount of emulsifier used is smaller. The emulsifier concentration in the dispersion is preferably 0 mass% or more and 10 mass% or less. Additionally, the polymer concentration in the dispersion is preferably 10% by mass or more and 30% by mass or less. Additionally, when using ethanol, the ethanol concentration in the dispersion is preferably 5 mass% or more and 15 mass% or less. The concentration of the volatile fragrance component or aerosol-generating base 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 applied to the paper can be appropriately selected depending on the thickness of the polymer layer to be formed. The temperature during drying may be, for example, 60°C or more and 200°C or less. As a result, a wrapper with a polymer layer formed on paper is obtained.

The method of filling the resulting wrapper with the tobacco filling is not particularly limited, but for example, a tobacco filling containing an aerosol-generating base material, etc. may be wrapped in a wrapper, or the tobacco filling may be filled in a normal wrapper. . When the shape of the cigarette has a longitudinal direction such as a rectangular shape, the cigarette may be filled so that the longitudinal direction is oriented in an unspecified direction within the wrapper, and may be arranged so as to be oriented in the axial direction of the tobacco-containing segment or in a direction perpendicular to the axial direction. You can also charge it.

[Non-combustible heated smoking articles]

A non-combustible heated smoking article according to the present invention has a tobacco-containing segment and a mouthpiece segment according to the present invention. Since the non-combustible heated smoking article includes the tobacco-containing segment according to the present invention, stains occurring on the wrapper can be reduced and volatile components can be uniformly supplied throughout inhalation. The non-combustion heated smoking article according to the present invention may have other segments in addition to the tobacco-containing segment and the mouthpiece segment.

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

The cooling segment 12 consists of a cylindrical member 15 . The general member 15 may be, for example, a paper tube obtained by processing thick paper into a cylindrical shape. A perforation 16 penetrating both the plain member 15 and the mouthpiece lining paper 22, which will be described later, is formed. The presence of perforations 16 allows external air to enter the cooling segment 12 during suction. As a result, the volatile components vaporized by heating the tobacco-containing segment 10 come into contact with external air and are liquefied due to a decrease in temperature, forming an aerosol. The diameter (diameter 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 perforations 16 may be formed on the circumference of the cooling segment 12.

The center hole segment is composed of a filling layer having one or more hollow parts and an inner plug wrapper covering the filling layer. For example, the center hole segment 13 is composed of a first filling layer 17 having a hollow portion and a first inner plug wrapper 18 covering the first filling layer 17. The center hole segment 13 has the function of increasing the strength of the mouthpiece segment 11. The first filled layer 17 is, for example, filled with cellulose acetate fibers at a high density, and has an inner diameter of ϕ5.0 to ϕ1 in which a plasticizer containing triacetin is added in an amount of 6 to 20% by mass based on the mass of cellulose acetate and hardened. This can be done with a rod of 0 mm. Since the first packed layer 17 has a high packing density of fibers, during suction, air or aerosol flows only through the hollow portion and hardly flows inside the first packed layer 17. In the non-combustible heated smoking article (30), when it is desired to reduce the reduction of aerosol components by filtration in the filter segment (14), the length of the filter segment (14) is shortened and replaced with a center hole segment (13). This is effective because it increases the delivery amount of aerosol components. Since the first filling layer 17 inside the center hole segment 13 is a fiber filling layer, the tactile sensation from the outside during use rarely causes discomfort to the user.

The filter segment 14 is composed of a second filling layer 19 and a second inner plug wrapper 20 covering the second filling layer 19. Since the second filling layer 19 exists up to the tip of the filter segment 14, the tip has the same appearance as that of a normal combustion smoking article. During suction, air and aerosol pass through the second packed layer 19, and part of the aerosol is filtered. The second filled layer 19 may be, for example, a filled layer 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 may be, for example, a cylindrical piece of paper. Additionally, the tobacco-containing segment 10, the cooling segment 12, the connected center hole segment 13, and the filter segment 14 are connected by a mouthpiece lining paper 22. These connections can be made, for example, by applying glue such as vinyl acetate glue to the inner surface of the mouthpiece lining paper 22 and wrapping the three segments. After connection, perforations 16 can be formed in the cooling segment 12 .

The length of the non-combustion heated smoking article according to the present invention in the axial direction, that is, the horizontal direction in FIG. 4, is not particularly limited, but is preferably 40 mm to 90 mm, and more preferably 50 mm to 75 mm. , it is more preferable that it is 50 mm to 60 mm. In addition, the circumferential length of the non-combustible 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. Aspects can be given. The length of each of these segments can be appropriately changed depending on manufacturing suitability, required quality, etc. Furthermore, even if only the filter segment is placed downstream of the cooling segment without using the center hole segment, it can function as a non-combustible heated smoking article.

[Non-combustion heated smoking system]

A 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 occurring on the wrapper can be reduced, and volatile components can be uniformly supplied throughout inhalation. The non-combustion heating smoking system according to the present invention is not particularly limited as long as it is provided with the non-combustion heating smoking article according to the present invention and the heating device, and may have other configurations.

An example of a non-combustion heated smoking system according to the present invention is shown in Fig. 5. 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 that heats the tobacco-containing segment of the non-combustion heated smoking article 30 from the outside. do. Figure 5(a) shows the state before inserting the non-combustion heated smoking article 30 into the heating device 31, and Figure 5(b) shows the state before inserting the non-combustion heated smoking article 30 into the heating device 31. indicates the state of heating. 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 regular recess 37, an inner side of the recess 37 comprising a tobacco-containing segment of a non-combustible heated smoking article 30 inserted into the recess 37. A heater 33 and a metal pipe 34 are arranged at corresponding positions. The heater 33 may be a heater based on electrical resistance, and power is supplied from the battery unit 35 in response to instructions from the control unit 36 that performs temperature control, thereby heating the heater 33. The heat generated by the heater 33 is transferred to the tobacco-containing segment of the non-combustible heated smoking article 30 through a metal tube 34 with high thermal conductivity. In Fig. 5(b), since it is schematically shown, there is a gap between the outer circumference of the non-combustible heated smoking article 30 and the inner circumference of the metal tube 34, but in reality, for the purpose of efficiently transferring heat, there is a gap. It is preferable that there is no gap between the outer circumference of the combustion heated smoking article 30 and the inner circumference of the metal tube 34. Additionally, the heating device 31 heats the tobacco-containing segment of the non-combusted heated smoking article 30 from the outside, but may heat the tobacco-containing segment 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 even more preferably 200°C or higher and 350°C or lower. In addition, the heating temperature refers to the heater temperature of the heating device.

In the non-combustion heated smoking system according to the present invention, a polymer layer containing a volatile component is formed 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 when heated, the volatile components contained in the polymer layer are released gradually and in a sufficient amount over a long period of time.

Example

Hereinafter, the present invention will be described in more detail by way of examples, but the present invention is not limited to these examples.

[Example 1]

(Produced by the rapper)

A solution was prepared by dissolving 21 g of menthol in 9 g of ethanol (hereinafter referred to as solution A). 45 g of PVA (Tg: 58°C, average degree of polymerization: 500, degree of saponification: 85-89 mol%) was dispersed and mixed in 116 g of water heated to 80°C. To this, liquid A was added while sufficiently stirring with a stirrer to prepare a dispersion liquid. The dispersion was applied on one side (piece side) on paper (product name: 50NFB, made by Nippon Paper Papyria, basis weight: 50 g/m2) and dried at 60 to 90°C to form a polymer layer with a thickness of 20 to 30 ㎛ on the paper. Got this formed wrapper. As a result of observing the cross section of the polymer layer with an SEM, it was confirmed that the polymer layer had a porous structure.

(Production of non-combustible heated smoking articles for evaluation)

A commercially available non-combustible heated smoking article (brand name: glo regular, manufactured by British American Tobacco Company) was prepared. The non-combustible heated smoking article contains no volatile flavoring ingredients and a portion corresponding to the tobacco-containing segment contains tobacco and glycerin as an aerosol-generating substrate. Additionally, the wrapper of the portion corresponding to the tobacco-containing segment is composed only of paper. The wrapper of the portion corresponding to the tobacco-containing segment of the non-combustion heated smoking article was removed, and the produced wrapper was wound in its place to obtain a non-combustion heated smoking article for evaluation.

(Evaluation of menthol supply in smoking)

Using a heating device corresponding to the commercially available non-combustible heated smoking article (brand name: glo, manufactured by British American Tobacco Company), the portion corresponding to the tobacco-containing segment of the non-combustible heated smoking article for evaluation was heated at 220°C. heated. Smoking was performed based on Canadian compulsory smoking conditions, components in the inhaled aerosol were collected, and samples extracted by shaking with isopropanol (IPA) were analyzed by GC. Specifically, based on the CIR method (Canadian Compulsory Smoking Conditions Method), 55 ml was sucked per puff (one puff was taken at 30-second intervals, i.e., sucked for 2 seconds and waited for 28 seconds), for a total of 4 puffs. Components in the aspirated aerosol were collected in a Cambridge filter. The components collected in the Cambridge filter were extracted by shaking at 200 rmp for 20 minutes using 10 ml of isopropanol (IPA) as an extraction solvent. The obtained extract was analyzed by GC under the following conditions, and the amount of menthol was quantified for each puff.

Inlet temperature: 240℃

Oven temperature: Hold at 150℃ for 1.3 minutes, then increase temperature to 240℃ at 70℃/min and hold for 5 minutes.

Column: Product name: DB-WAX 10m×0.18 mm×0.18 μm, manufactured by Agilent

Detector: FID

The menthol supply efficiency, which represents the ratio of the amount of menthol in the inhaled aerosol to the amount of menthol contained in the non-combusted heated smoking article for each puff, is shown in Figure 6. Additionally, Table 1 shows the total amount of menthol in the aerosol inhaled during 4 puffs (total menthol amount) and the menthol supply efficiency in the total of 4 puffs.

(Evaluation of stains)

After placing the airtight container containing the non-combustible 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-combustible heated smoking article is taken out from the container, and the stains occurring on the surface of the wrapper are inspected. Numbers were assessed visually. In this evaluation, the maximum diameter (L) of the stain was measured separately for those that satisfied 0.9 mm≤L<2.7 mm (small stains) and those that satisfied 2.7 mm≤L (large stains). It was carried out. The results of this evaluation are shown in Table 2. In addition, in this evaluation, the unit of stain is each stain that can be approximated by an ellipse (including a circle), regardless of whether it is independent of other stains or not. In addition, the degree of occurrence of stains was expressed as the number of stains among 200 non-combustible heated smoking articles evaluated and the occurrence percentage of each level, whether large or small.

[Comparative Example 1]

A commercially available non-combustible heated smoking article (brand name: glo Menthol, manufactured by British American Tobacco Company) was prepared. The portion corresponding to the tobacco-containing segment of the non-combustible heated smoking article includes menthol as a volatile flavor component and glycerin as an aerosol-generating base. Additionally, the wrapper of the portion corresponding to the tobacco-containing segment is composed only of paper. In addition, the amount of menthol contained in the non-combustion heated smoking article is greater than the amount of menthol contained in the non-combustion heated smoking article for evaluation produced in Example 1.

The evaluation was conducted in the same manner as in Example 1, except that the non-combustible heated smoking article was used. The results are shown in Figure 6 and Tables 1 and 2.

As shown in Figure 6, in Example 1 in which a polymer layer containing menthol was formed in the wrapper, the menthol supply efficiency was almost uniform from the first to the fourth puff. It is presumed that this is because menthol was slowly released from the polymer layer. On the other hand, in Comparative Example 1 in which the tobacco filling contained menthol and the polymer layer containing menthol was not formed in the wrapper, the menthol supply efficiency decreased linearly from the first to the fourth puff. It is presumed that this is because most of the menthol contained in the cigarette filling was vaporized throughout inhalation.

Additionally, as shown in Table 1, the menthol supply efficiency in Example 1 was higher than that in Comparative Example 1 in the total of 4 puffs. This is presumed to be because in Example 1, menthol is contained in the polymer layer of the wrapper, and the polymer layer of the wrapper is located near the heater of the heating device when heated. In addition, since the initial amount of menthol contained in the non-combustible heated smoking article was different in Example 1 and Comparative Example 1, comparison was made based on menthol supply efficiency in Figure 6 and Table 1.

Additionally, as shown in Table 2, while stains were not observed on the surface of the wrapper in Example 1, stains were confirmed in Comparative Example 1. In Example 1, it is assumed that this is because the presence of the polymer layer was able to suppress the oozing of the aerosol-generating base material, tobacco components, and volatile flavor components contained in the tobacco filling.

1: paper
2: polymer layer
3: Rapper
4: Tobacco filling
5: Volatile components
10: Tobacco-containing segment
11: Mouthpiece segment
12: cooling segment
13: Center hole segment
14: Filter segment
15: Usually absent
16: perforation
17: first packed layer
18: First inner plug wrapper
19: second packed layer
20: Second inner plug wrapper
21: Outerplug wrapper
22: Mouthpiece lining paper
30: Non-combustible heated 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 filling comprising tobacco and an aerosol-generating substrate, and a wrapper covering the tobacco filling, comprising:
The wrapper includes paper and a polymer layer formed on an inner surface of the paper,
wherein the polymer layer includes a polymer and a volatile fragrance ingredient or aerosol-generating substrate,
A tobacco-containing segment wherein the polymer layer has a thickness of 10 μm or more and 40 μm or less. According to claim 1,
A tobacco-containing segment wherein the glass transition temperature of the polymer is 400° C. or lower. The method of claim 1 or 2,
A tobacco-containing segment wherein the polymer is polyvinyl alcohol. According to claim 3,
A tobacco-containing segment wherein the polyvinyl alcohol has an average degree of polymerization of 1500 or less. According to claim 3,
A tobacco-containing segment in which the degree of saponification of the polyvinyl alcohol is 90 mol% or more. The method of claim 1 or 2,
A tobacco-containing segment wherein the polymer layer has a porous structure. According to claim 6,
A tobacco-containing segment wherein the volatile flavor component or the aerosol-generating substrate is within the pores of the porous structure. The method of claim 1 or 2,
A tobacco-containing segment wherein the polymer layer includes the volatile flavor component and the aerosol-generating substrate. The tobacco-containing segment according to claim 1 or 2,
A non-combustible heated smoking article having a mouthpiece segment. A non-combustible heated smoking article according to claim 9,
A non-combustible heated smoking system comprising a heating device for heating the tobacco-containing segment. According to claim 10,
A non-combustion heated smoking system wherein the heating temperature by the heating device is 400° C. or lower. Claim 1 or 2, comprising a process of manufacturing the wrapper through a process of applying a dispersion in which the polymer and the volatile fragrance ingredient or the aerosol-generating base are dispersed in an aqueous dispersion medium onto the paper and drying it. Method for producing tobacco-containing segments described in .