CN113015446A

CN113015446A - Tobacco-containing segment and method of making same, non-combustion heated smoking article, and non-combustion heated smoking system

Info

Publication number: CN113015446A
Application number: CN201980075450.8A
Authority: CN
Inventors: 本溜哲也
Original assignee: Japan Tobacco Inc
Current assignee: Japan Tobacco Inc
Priority date: 2018-11-14
Filing date: 2019-11-12
Publication date: 2021-06-22
Anticipated expiration: 2039-11-12
Also published as: TW202037282A; EP3881686A1; KR20210063415A; JPWO2020100879A1; KR102660689B1; EP3881686A4; CN113015446B; JP7034329B2; WO2020100879A1

Abstract

The present invention provides a tobacco-containing segment which can reduce stains generated in the packaging material of the tobacco-containing segment and which can consistently and uniformly supply volatile components contained in the tobacco-containing segment during smoking. The above-mentioned tobacco-containing segment is a tobacco-containing segment for non-combustion heating smoking articles, which comprises: a tobacco filler comprising tobacco and aerosol-generating base material, and a packaging material covering the above-mentioned tobacco filler, the above-mentioned packaging material comprising: paper, and The polymer layer provided on the inner surface of the paper, the polymer layer comprising: a polymer, and a volatile fragrance ingredient or an aerosol-generating substrate.

Description

Tobacco-containing segment and method of making same, non-combustion heated smoking article, and non-combustion heated smoking system

Technical Field

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

Background

A general combustion smoking article (tobacco) for smoking by combustion includes a tobacco-containing segment formed by winding a tobacco filler into a cylindrical shape with a paper-made packing material, and a mouthpiece segment formed by winding a fiber formed of cellulose acetate or the like or a paper roll provided with wrinkles into a cylindrical shape with a paper-made packing material, in which a flavor, a humectant, an appropriate amount of moisture, and the like are added to dry tobacco leaves cut to a width of about 1 mm. The tobacco-containing section and the cigarette holder section are connected together through lining paper. The user ignites the end of the tobacco-containing segment with a lighter or the like, and draws the tobacco from the end of the mouthpiece segment to smoke. The front end of the tobacco-containing segment is burned at a temperature exceeding 800 ℃.

As an alternative to such a general combustion smoking article, a non-combustion heating smoking article and a non-combustion heating smoking system have been developed, in which combustion is replaced by heating (for example, patent documents 1 to 3). The heating temperature is lower than the combustion temperature in a burning smoking article, for example at 400 ℃ or lower. In a non-combustion heated smoking article, the tobacco segment-containing tobacco filler comprises an aerosol-generating substrate such as glycerin, Propylene Glycol (PG), triethyl citrate (TEC), triacetin, and the like. The aerosol-generating substrate is vaporised by heating and moved by suction to a cooling segment within the mouthpiece segment, after cooling more reliably generating an aerosol. When the aerosol is sucked, the aerosol is also sucked together, and therefore, the satisfaction of the user can be ensured.

The non-combustion heating smoking system generally includes: a columnar non-combustion heating smoking article having a shape similar to that of a general combustion smoking article, and a heating device including a battery, a controller, a heater, and the like. Examples of the heater include a heater using a resistor and a heater using IH. Examples of a heating method of the heater using the resistance include: a method of heating from the outside of a non-combustion heated smoking article with a heater; a method of inserting a needle-like or blade-like heater into a tobacco-containing segment containing tobacco filler from the tip of a non-combustion heating smoking article to heat the smoking article, and the like.

Documents of the prior art

Patent document

Patent document 1: japanese patent No. 5292410

Patent document 2: japanese patent No. 5771338

Patent document 3: japanese Kohyo publication (JP-A) 2013-507906

Disclosure of Invention

Problems to be solved by the invention

However, since the tobacco-containing segment of the non-combustion heated smoking article includes the aerosol-generating substrate, the tobacco component, the flavor component, and the like (including the aerosol component itself) may bleed out to the paper-made wrapping material around which the tobacco filler is wound, and stains may be generated on the outer surface of the wrapping material.

In a typical burning smoking article, combustion proceeds in a high-temperature combustion portion, and only the vicinity of the combustion portion is heated in a tobacco-containing segment, and volatile components present in this portion volatilize and are drawn into the user. That is, the volatile components present in the direction of the tobacco-containing segment length of the burning smoking article are constantly volatilized and supplied almost uniformly at the time of smoking. On the other hand, in the non-combustion heating smoking article, the entire tobacco-containing segment in the longitudinal direction is heated by the heater, and therefore, most of the volatile flavor components contained in the tobacco-containing segment and the volatile components such as the aerosol-generating substrate may be volatilized during the first half of smoking.

The present invention aims to provide a tobacco-containing segment, a non-combustion heating smoking article, and a non-combustion heating smoking system, which can reduce stains generated in a packaging material of the tobacco-containing segment and can uniformly supply volatile components contained in the tobacco-containing segment all the time during smoking.

Means for solving the problems

The tobacco-containing segment of the present invention is a tobacco-containing segment for a non-burning heated smoking article, comprising: a tobacco filler comprising tobacco and an aerosol-generating substrate, and a packaging material for covering the tobacco filler, the packaging material comprising: a paper, and a polymer layer disposed on an inner surface of the paper, the polymer layer comprising: a polymer, and a volatile perfume ingredient or an aerosol-generating substrate.

The non-combustion heating smoking article of the present invention comprises: the tobacco-containing segment, and the mouthpiece segment.

The non-combustion heating smoking system of the present invention comprises: the non-combustion heated smoking article, and a heating device for heating the tobacco-containing segment.

The method for manufacturing a tobacco-containing segment of the present invention comprises: the packaging material is produced by applying a dispersion liquid, which is obtained by dispersing the polymer, the volatile flavor component, or the aerosol-generating substrate in an aqueous dispersion medium, to the paper and drying the dispersion liquid.

ADVANTAGEOUS EFFECTS OF INVENTION

According to the present invention, it is possible to provide a tobacco-containing segment, a non-combustion heated smoking article, and a non-combustion heated smoking system, which can reduce stains generated in a wrapping material containing a tobacco segment and can constantly and uniformly supply volatile components contained in the tobacco-containing segment during smoking.

Drawings

FIG. 1 is a cross-sectional view showing an example of a tobacco-containing segment of the present invention.

Fig. 2 is a cross-sectional view showing an example of the packaging material of the present invention.

Fig. 3 is an SEM image obtained by imaging a cross section of an example of the polymer layer having a porous structure of the present invention.

Fig. 4 is a cross-sectional view showing an example of the non-combustion heating smoking article of the present invention.

Fig. 5 shows an example of the non-combustion heating smoking system of the present invention, where (a) shows a state before the non-combustion heating smoking article is inserted into the heating device, and (b) shows a schematic view of a state where the non-combustion heating smoking article is inserted into the heating device and heated.

Fig. 6 is a graph showing the menthol amount supply efficiency per suction in example 1 and comparative example 1.

Description of the symbols

1 paper

2 Polymer layer

3 packaging material

4 tobacco filler

5 volatile component

10 tobacco containing segments

11 mouthpiece segment

12 cooling section

13 central hole section

14 filter segment

15 tubular member

16 perforation

17 first filling layer

18 first inner filter rod forming paper

19 second filling layer

20 second inner filter rod forming paper

21 outer filter stick forming paper

22 cigarette holder lining paper

30 non-combustion heated smoking article

31 heating device

32 body

33 heating device

34 metal tube

35 Battery cell

36 control unit

37 recess

Detailed Description

[ tobacco-containing segments ]

The tobacco-containing segment of the present invention is a tobacco-containing segment for a non-burning heated smoking article, comprising: a tobacco filler comprising tobacco and an aerosol-generating substrate, and a packaging material for enclosing the tobacco filler. Here, the packaging material includes: the paper comprises paper and a polymer layer arranged on the inner surface of the paper. In addition, the polymer layer includes: a polymer, and a volatile perfume ingredient or an aerosol-generating substrate (hereinafter also denoted as volatile ingredient).

In the present invention, the packaging material has a polymer layer on the inner surface of the paper. The presence of the polymer layer can suppress the exudation of the aerosol-generating substrate, the tobacco component, and the volatile flavor component contained in a large amount in the tobacco filler, and can reduce the occurrence of stains on the packaging material. In addition, in the present invention, the polymer layer comprises: a polymer, and, as a volatile component, a volatile perfume component or an aerosol-generating substrate. The polymeric layer comprises volatile perfume ingredients or aerosol-generating substrates such that the volatile perfume ingredients or aerosol-generating substrates slowly volatilize and evolve from the polymeric layer upon heating. Thus, the volatile perfume ingredient or aerosol-generating substrate is uniformly volatilized at all times during smoking and is delivered to the user. The present invention will be described in detail below.

(construction of tobacco-containing segments)

In the configuration of the tobacco-containing segment according to the present invention, the tobacco-containing segment is a tobacco-containing segment for a non-combustion heating smoking article including a tobacco filler containing tobacco and an aerosol-generating substrate, and a wrapping material covering the tobacco filler, the wrapping material including: the present invention relates to a paper sheet, and more particularly, to a paper sheet and a polymer layer provided on the inner surface of the paper sheet, wherein the polymer layer is not particularly limited as long as the polymer layer contains a polymer, a volatile perfume component, or an aerosol-generating substrate. An example of the tobacco-containing segment of the present invention is shown in FIG. 1. The tobacco-containing segment shown in fig. 1 has: a tobacco filler 4 containing tobacco and an aerosol-generating substrate, and a tubular wrapping material 3 covering the tobacco filler 4. The packaging material 3 has paper 1 on the outer surface side and a polymer layer 2 on the inner surface side. The polymer layer 2 comprises: a volatile perfume ingredient or an aerosol-generating substrate, and a polymer.

The shape of the tobacco-containing segment is not particularly limited, and may be, for example, a columnar shape. When the tobacco-containing segment is columnar, the circumference of the tobacco-containing segment is preferably 16 to 25mm, more preferably 20 to 24mm, and still more preferably 21 to 23 mm. The length of the tobacco-containing segment in the axial direction, i.e., in the horizontal direction in fig. 1, is preferably 20 to 70mm, more preferably 20 to 50mm, and still more preferably 20 to 30 mm. The shape of the cross section of the tobacco-containing segment is not particularly limited, and may be, for example, circular, elliptical, polygonal, or the like.

(tobacco filler)

The tobacco filler of the present invention comprises tobacco, and an aerosol-generating substrate. The tobacco filler may further contain a volatile flavor component, water, and the like. The size of the tobacco used as the filler and the method for producing the same are not particularly limited. For example, cut tobacco in which dried tobacco leaves are cut into pieces having a width of 0.8 to 1.2mm can be used. When the shredded tobacco is cut into the above width, the length of the shredded tobacco is about 5-20 mm. Further, the dried tobacco leaves may be pulverized into a uniform material having an average particle diameter of about 20 to 200 μm, and then processed into pieces, and the pieces may be cut into tobacco shreds having a width of 0.8 to 1.2 mm. When the shredded tobacco is cut into the above width, the length of the shredded tobacco is about 5-20 mm. Further, the tobacco pieces after the sheet processing may be collectively processed and used as filler without being cut. Similarly, when the dried tobacco leaves are cut and used, and when the tobacco leaves are used in the form of a sheet after being pulverized and homogenized, various types of tobacco can be used as the tobacco contained in the tobacco filler. Yellow seed, burley seed, oriental tobacco seed, indigenous variety, and other tobacco (Nicotiana tabacum) line varieties, and yellow flower tobacco (Nicotiana rustica) line varieties can be appropriately mixed and used to achieve the target taste. The details of the above tobacco varieties are disclosed in "the tobacco classics, the tobacco general research center, 2009.3.31". There are a number of conventional methods for processing tobacco into a homogenized sheet by pulverizing the tobacco. The first is a sheet made by a papermaking process, the second is a cast sheet made by mixing and homogenizing a suitable solvent such as water, casting the mixture into a thin homogenized product on a metal plate or a metal plate belt, and drying the cast sheet, and the third is a rolled sheet made by mixing and homogenizing a suitable solvent such as water, and then extruding the mixture into a sheet shape. Details of the types of the above-mentioned homogenized sheets are disclosed in "the tobacco classics, the center for tobacco general research, 2009.3.31". Aerosol generationThe substrate is a material that can generate aerosol by heating, and examples thereof include: glycerin, Propylene Glycol (PG), triethyl citrate (TEC), triacetin, 1, 3-butanediol, and the like. One of these may be used, or two or more of these may be used in combination. The filling density of the tobacco filler is not particularly limited, and is usually 250mg/cm from the viewpoint of ensuring the performance of the non-combustion heating smoking article and imparting a good smoking flavor³Above, preferably 320mg/cm³The concentration of the above-mentioned metal salt is usually 520mg/cm³Hereinafter, it is preferably 420mg/cm³The following. Specifically, in the case of a tobacco-containing segment having a circumference of 22mm and a length of 20mm, the content of the tobacco filler in the tobacco-containing segment is in the range of 200 to 400mg, preferably 250 to 320mg, per tobacco-containing segment.

The content of the aerosol-generating substrate in the tobacco filler 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 imparting a good taste. When the tobacco filler contains a volatile flavor component, the content of the volatile flavor component in the tobacco filler is not particularly limited, and is usually 10000ppm or more, preferably 20000ppm or more, more preferably 25000ppm or more, and usually 50000ppm or less, preferably 40000ppm or less, more preferably 33000ppm or less, from the viewpoint of imparting a good taste.

The method of filling the tobacco filler in the packing material is not particularly limited, and for example, the tobacco filler may be wrapped with the packing material or the tobacco filler may be filled in a cylindrical packing material. In the case where the tobacco has a rectangular shape and a longitudinal direction, the tobacco may be filled so that the longitudinal direction of the tobacco is in an unspecified direction in the wrapping material, or may be filled so that the tobacco-containing segments are aligned in the axial direction or in a direction perpendicular to the axial direction. By heating the tobacco-containing segment, the tobacco components contained in the tobacco filler, the aerosol-generating substrate, are vaporized and moved by suction to the mouthpiece segment.

(packaging Material)

The packaging material of the present invention comprises: the paper comprises paper and a polymer layer arranged on the inner surface of the paper. Fig. 2 shows an example of the packaging material of the present invention. The packaging material 3 shown in fig. 2 is provided with a polymer layer 2 on a paper 1. The polymer layer 2 comprises a volatile perfume ingredient or aerosol-generating substrate as the volatile ingredient 5.

The paper is not particularly limited as long as it functions as a support, and the basis weight of the paper is preferably 25g/m from the viewpoint that the polymer layer can be formed thick²More preferably 35 to 50g/m². Further, the air permeability of the paper is preferably low, and the air permeability is more preferably 0. The thickness of the paper is not particularly limited, and may be, for example, 30 to 60 μm.

The polymer layer may contain both the volatile perfume component and the aerosol-generating substrate, and the polymer. It is presumed that the polymer becomes rubbery or dissolved by heating, or the volatile component contained in the polymer layer is gradually released from the polymer layer by bringing the aerosol vaporized from the tobacco filler into contact with the polymer layer.

The type of the polymer is not particularly limited, but a biodegradable polymer and an edible polymer are preferable. In addition, the glass transition temperature (Tg) of the polymer is preferably 400 ℃ or lower, more preferably 300 ℃ or lower, and even more preferably 200 ℃ or lower, from the viewpoint of releasing volatile components from the polymer layer at the heating temperature of the tobacco-containing segment. The lower limit of the Tg of the polymer is not particularly limited, and may be, for example, 40 ℃ or higher. Specifically, the Tg of the polymer was measured by a differential scanning calorimeter (trade name: "DSC 7000", manufactured by Hitachi High-Tech Science Co., Ltd.). 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, hardened oil, and the like. One of these may be used, or two or more of these may be used in combination. Among these, PVA or a polyvinyl alcohol-acrylic acid-methyl methacrylate copolymer (POVACOAT) is preferable as the polymer from the viewpoint of good coatability to paper.

When the polymer is PVA, the average degree of polymerization of PVA is preferably 1500 or less. When the average polymerization degree of PVA is 1500 or less, the coating property to paper is improved, and a polymer layer can be uniformly formed on paper. The average polymerization degree of PVA is preferably 100 or more and 1300 or less, more 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 JIS K6726-.

When the polymer is PVA, the saponification degree of PVA is preferably 90 mol% or more. When the saponification degree of PVA is 90 mol% or more, the solubility of PVA in water is reduced, and the release of volatile components caused by dissolution of PVA in water can be suppressed, so that the volatile components can be stably retained in the polymer layer. The saponification degree of PVA is preferably 90 mol% or more and 99 mol% or less, and more preferably 93 mol% or more and 98 mol% or less. The degree of saponification of PVA is a value measured according to the test method of polyvinyl alcohol of JIS K6726-.

The type of the volatile perfume component is not particularly limited, and from the viewpoint of imparting a good odor absorption, there may be mentioned: acetoanisole, acetophenone, acetylpyrazine, 2-acetylthiazole, alfalfa extract, pentanol, amyl butyrate, trans-anethole, anise oil, apple juice, mirabilis oil, beeswax absolute (beeswax absolute), benzaldehyde, Benzoin resin (Benzoin resinoid), benzyl alcohol, benzyl benzoate, benzyl phenylacetate, benzyl propionate, 2, 3-butanedione, 2-butanol, butyl butyrate, butyric acid, caramel, cardamom oil, carob absolute (carob absolute), beta-carotene, carrot juice, L-carvone, beta-carotene, cassia oil, cedar wood oil, celery seed oil, chamomile oil, cinnamaldehyde, cinnamic alcohol, cinnamyl cinnamate, citronella oil, DL-citronellol, sage extract, cocoa, coffee, cocker oil, caraway oil, cuminal, and the like, Artemisia annua oil, delta-decalactone, gamma-decalactone, capric acid, dill 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, ethyl caproate, ethyl isovalerate, ethyl lactate, ethyl laurate, ethyl levulinate, ethyl maltol, ethyl caprylate, ethyl oleate, ethyl palmitate, ethyl phenylacetate, ethyl propionate, ethyl stearate, ethyl valerate, ethyl vanillin glucoside, ethyl vanillin, dill oil, 3, 4-dimethyl-1, 2-cyclopentanedione, ethyl butyrate, ethyl laurate, ethyl levulinate, ethyl maltol, ethyl caprylate, 2-ethyl-3, (5 or 6) -dimethylpyrazine, 5-ethyl-3-hydroxy-4-methyl-2 (5H) -furan, 2-ethyl-3-methylpyrazine, eucalyptol, Fenugreek absolute (Fenugreek absolute), caragana sinica oil, gentian root infusion (gentiian root infusion), geraniol, geranyl acetate, grape juice, guaiacol, guava extract, gamma-heptolactone, gamma-caprolactone, hexanoic acid, cis-3-hexen-1-ol, hexyl acetate, hexanol, hexyl phenylacetate, honey, 4-hydroxy-3-pentenoate lactone, 4-hydroxy-4- (3-hydroxy-1-butenyl) -3,5, 5-trimethyl-2-cyclohexen-1-one, 4- (p-hydroxyphenyl) -2-butanone, sodium 4-hydroxyundecanoate, Echinacea purpurea absolute (immurtelle absolute), beta-ionone, isoamyl acetate, isoamyl butyrate, isoamyl phenylacetate, isobutyl acetate, isobutyl phenylacetate, jasmine absolute (jasmine absolute), cola nut tincture, labdanum oil, terpeneless lemon oil, licorice extract, linalool, linalyl acetate, angelica root oil (ロベージ oil), maltol, maple syrup, menthol, menthone, L-menthyl acetate, p-methoxybenzaldehyde, methyl-2-pyrrolidone, methyl anthranilate, methyl phenylacetate, methyl salicylate, 4' -methylacetophenone, methylcyclopentenone, 3-methylvaleric acid, mimosa absolute (mimosa absolute), molasses, myristic acid, nerol, nervol, isol, isovaleryl alcohol, Nerolidol, gamma-nonalactone, nutmeg oil, delta-octalactone, octanal, caprylic acid, neroli oil, orange oil, orris root oil, palmitic acid, omega-valerolactone, peppermint oil, petitgrain oil (petitgrain oil paraguay), phenethyl alcohol, phenylethyl phenylacetate, phenylacetic acid, piperonal, plum extract, propenyl ethylguaiacol, propyl acetate, 3-propylidene phthalide, dried plum juice, pyruvic acid, raisin extract, rose oil, rum, sage oil, sandalwood oil, spearmint oil, storax absolute (styrax absolute), calendula oil, tea distillate, alpha-terpineol, terpinyl acetate, 5,6,7, 8-tetrahydroquinoxaline, 1,5,5, 9-tetramethyl-13-oxoheterocycle (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, 3-cyclohexenyl) 2-buten-4-one, 2,6, 6-trimethyl-2-cyclohexene-1, 4-dione, 4- (2,6, 6-trimethyl-1, 3-cyclohexadienyl) 2-buten-4-one, 2,3, 5-trimethylpyrazine, γ -undecalactone, γ -valerolactone, vanillin, veratraldehyde, Violet leaf absolute (Violet), tobacco plant (tobacco leaf, tobacco stem, tobacco flower, tobacco root, and tobacco species), particularly preferably menthol. In addition, these volatile perfume ingredients may be used singly or two or more kinds may be used in combination. The aerosol-generating substrate is not particularly limited, and is a material that can generate an aerosol by heating, and examples thereof include: glycerin, Propylene Glycol (PG), triethyl citrate (TEC), triacetin, 1, 3-butanediol, and the like. These materials may be used alone, or two or more of them may be used in combination. As the aerosol-generating substrate contained in the polymer layer, the same aerosol-generating substrate as that contained in the tobacco filler can be used. The aerosol-generating substrate contained in the polymeric layer may be the same as or different from the aerosol-generating substrate contained in the tobacco filler.

Preferably, the polymer layer has a porous structure. For example, by the presence of a volatile component inside the pores of the porous structure, a part of the porous structure is destroyed by heating, and the volatile component inside is slowly released. This makes it possible to supply the volatile component uniformly at all times during the suction. Fig. 3 shows an SEM image obtained by imaging a cross section of an example of the polymer layer having a porous structure of the present invention at 1500 times. 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.

In the case where 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. The average pore diameter of the porous structure is a value measured by CD-SEM.

The method for forming the porous structure is not particularly limited, and for example, as described later, when a polymer or a volatile component is emulsified with an emulsifier in the preparation of a coating liquid for a polymer layer, micelles are formed, and thus the porous structure derived from the micelles can be formed. In this case, the average pore diameter and the porosity of the porous structure can be adjusted by the amount of the emulsifier.

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

The thickness of the polymer layer is preferably 10 μm or more and 60 μm or less. By setting the thickness of the polymer layer to 10 μm or more, the volatile component can be retained in a sufficient amount on the paper, and the volatile component can be supplied more uniformly at all times during suction. Further, by setting the thickness of the polymer layer to 60 μm or less, the thermal conductivity from the heater can be improved when the heater heats the tobacco-containing segment from the outside. The thickness of the polymer layer is more preferably 15 μm or more and 50 μm or less, and still more preferably 20 μm or more and 40 μm or less.

[ method for producing tobacco-containing segment ]

The method for manufacturing a tobacco-containing segment of the present invention comprises: the packaging material is produced by applying a dispersion liquid, in which the polymer and the volatile flavor component or the aerosol-generating substrate are dispersed in an aqueous dispersion medium, to the paper and drying the dispersion liquid. The tobacco-containing segment of the present invention can be suitably produced according to the above-described method.

First, a dispersion liquid is prepared by dispersing a polymer and a volatile flavor component or an aerosol-generating substrate in an aqueous dispersion medium. A dispersion liquid in which a polymer, a volatile flavor component, and an aerosol-generating substrate are dispersed in an aqueous dispersion medium can be prepared. For example, when a component that is solid at ordinary temperature such as menthol is used as the volatile flavor component, it is preferable to dissolve the solid component in ethanol or the like in advance. Specifically, for example, the solid components can be dissolved in ethanol, and a polymer and an emulsifier used as needed can be added thereto to prepare a dispersion. Examples of the emulsifier include glycerin fatty acid esters, sucrose fatty acid esters, and lecithin. One of these may be used, or two or more of these may be used in combination.

In the dispersion, the solid component is dissolved in ethanol, and the dissolved substance and the polymer are dispersed in the dispersion (ethanol aqueous solution). When the dispersion is applied and dried, ethanol and water are volatilized and removed, and therefore, the portion where ethanol and water exist becomes pores. Therefore, the polymer layer formed is considered to have a porous structure, and the solid component exists inside the pores. In addition, when an emulsifier is used, micelles containing ethanol, the emulsifier, and the solid components are formed. When ethanol and water are removed, pores are formed in the micelle portion, and the solid component remains in the pores. Therefore, the polymer layer formed is considered to have a porous structure, and the solid component exists inside the pores. The pore size of the porous structure can be adjusted by the amount of the emulsifier used, etc., for example, the smaller the amount of the emulsifier used, the larger the pore size. The pore diameter is preferably large from the viewpoint of sufficiently retaining the volatile component in the pores and slowly releasing the volatile component by heating. That is, the amount of the emulsifier used is preferably small. The concentration of the emulsifier in the dispersion is preferably 0 mass% or more and 10 mass% or less. The concentration of the polymer in the dispersion is preferably 10 mass% or more and 30 mass% or less. When ethanol is used, the concentration of ethanol in the dispersion is preferably 5% by mass or more and 15% by mass or less. The concentration of the volatile flavor component or the aerosol-generating substrate in the dispersion is preferably 5% by mass or more and 20% by mass or less.

Next, the dispersion is applied to 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 ℃ to 200 ℃. Thus, a packaging material having a polymer layer formed on paper can be obtained.

The method of filling the tobacco filler in the obtained packaging material is not particularly limited, and for example, the tobacco filler containing an aerosol-generating substrate or the like in tobacco may be wrapped with a packaging material, or the tobacco filler may be filled in a cylindrical packaging material. In the case where the tobacco has a rectangular shape and a longitudinal direction, the tobacco may be filled so that the longitudinal direction of the tobacco is in an unspecified direction in the wrapping material, or may be filled so that the tobacco-containing segments are aligned in the axial direction or in a direction perpendicular to the axial direction.

[ non-burning heating smoking article ]

The non-combustion heating smoking article of the present invention comprises: the tobacco-containing segment of the present invention, and a mouthpiece segment. The non-combustion heating smoking article includes the tobacco-containing segment of the present invention, and therefore, stains occurring in the packing material can be reduced, and the volatile component can be uniformly supplied at all times during smoking. The non-combustible heated smoking article of the present invention may have other segments in addition to the tobacco segment and the mouthpiece segment.

Fig. 4 shows an example of a non-combustion heating smoking article of the present invention. The non-combustion heating smoking article 30 shown in fig. 4 includes: a tobacco-containing segment 10 of the present invention, and a mouthpiece segment 11. The mouthpiece section 11 includes: a cooling section 12, a central bore section 13, and a filter section 14. During smoking, the tobacco-containing segment 10 is heated and drawn from the end of the filter segment 14.

The cooling stage 12 is constituted by a cylindrical member 15. The cylindrical member 15 may be, for example, a paper tube obtained by processing thick paper into a cylindrical shape. The cylindrical member 15 and a mouthpiece paper 22 described later are provided with a through hole 16 penetrating both. By the presence of the perforations 16, external air is introduced into the cooling section 12 during suction. Thus, by heating the tobacco-containing segment 10, the vaporized volatile components come into contact with the outside air, and the temperature thereof is lowered, thereby being liquefied to form an aerosol. The diameter (diameter length) of the perforation 16 is not particularly limited, and may be, for example, 0.5 to 1.5 mm. The number of the perforations 16 is not particularly limited, and may be 1 or 2 or more. For example, the perforations 16 may be provided in plural on the outer periphery of the cooling section 12.

The central hole section is composed of a filling layer with 1 or more hollow parts and inner filter rod forming paper covering the filling layer. For example, the central hole section 13 is constituted by a first filling layer 17 having a hollow portion, and a first inner filter rod-forming paper 18 covering the first filling layer 17. The central bore section 13 has the function of increasing the strength of the mouthpiece section 11. The first filling layer 17 is filled with, for example, cellulose acetate fiber at a high density, and 6 to 20 mass% of a plasticizer containing triacetin may be added to the cellulose acetate fiber to be cured to have an inner diameter

The rod of (1). Since the packing density of the fibers of the first filler layer 17 is high, air or aerosol flows only in the hollow portion during suction, and hardly flows in the first filler layer 17. In the non-combustion heated smoking article 30, when it is desired to reduce the reduction of the aerosol component in the filter section 14 by filtration, it is effective to reduce the length of the filter section 14 and replace it with the central hole section 13 in order to increase the amount of aerosol component delivered. The first filler layer 17 inside the center hole section 13 is a fiber filler layer, and therefore, the user feels little uncomfortable from the outside when in use.

The filter segment 14 is comprised of a second filler layer 19 and a second inner rod forming paper 20 that wraps around the second filler layer 19. In the filter segment 14, there is a second filler layer 19 up to the mouth end, which therefore has the same appearance as a conventional burning smoking article. When the air and aerosol are drawn through the second filler layer 19, a portion of the aerosol is filtered. The second packed layer 19 may be a packed layer of, for example, cellulose acetate fibers.

The central bore section 13 and the filter section 14 are joined together by an outer plug wrap 21. The outer plug wrap 21 may be, for example, a cylindrical paper. In addition, the tobacco containing segment 10, the cooling segment 12, and the joined central bore segment 13 and filter segment 14 are joined together by a tipping paper 22. These can be connected by, for example, applying a paste such as a vinyl acetate paste to the inner surface of the mouthpiece liner 22, and putting and winding the 3 segments. After connection, perforations 16 may be provided in the cooling section 12.

The length of the non-combustion heating smoking article of the present invention in the axial direction, i.e., in the horizontal direction in fig. 4 is not particularly limited, but is preferably 40mm to 90mm, more preferably 50mm to 75mm, and still more preferably 50mm to 60 mm. The circumference of the non-combustion heated smoking article is preferably 16mm to 25mm, more preferably 20mm to 24mm, and still more preferably 21mm to 23 mm. Examples thereof include: the tobacco-containing segment 10 has a length of 20mm, the cooling segment 12 has a length of 20mm, the central hole segment 13 has a length of 8mm, and the filter segment 14 has a length of 7 mm. These segment lengths may be appropriately changed according to manufacturing suitability, required quality, and the like. Further, even if only the filter segment is disposed downstream of the cooling segment without using the center hole segment, the filter segment can function as a non-combustion heating smoking article.

[ non-combustion heating smoking System ]

The non-combustion heating smoking system of the present invention comprises: the non-combustion heated smoking article of the present invention, and a heating device for heating a tobacco-containing segment. The non-combustion heating smoking system is provided with the non-combustion heating smoking article of the present invention, so that stains generated on the packaging material can be reduced, and the volatile component can be uniformly supplied all the time during smoking. The non-combustion heating smoking system of the present invention is not particularly limited as long as it includes the non-combustion heating smoking article of the present invention and the heating device, and may have other configurations.

Fig. 5 shows an example of a non-combustion heating and smoking system according to the present invention. The non-combustion heating smoking system shown in fig. 5 includes: the non-combustion heating smoking article 30 of the present invention and the heating device 31 for heating the tobacco-containing segment of the non-combustion heating smoking article 30 from the outside. Fig. 5(a) shows a state before the non-combustion heated smoking article 30 is inserted into the heating device 31, and fig. 5(b) shows a state in which 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 pipe 34, a battery unit 35, and a control unit 36. The main body 32 has a cylindrical recess 37, and the heater 33 and the metal pipe 34 are disposed on the inner side surface of the recess 37 at positions corresponding to the tobacco-containing segment of the non-combustion heating smoking article 30 inserted into the recess 37. The heater 33 may be a heater using a resistance, and the heater 33 may be heated by supplying power from the battery unit 35 in response to an instruction from the control unit 36 that controls the temperature. The heat emitted from the heater 33 is transferred to the tobacco-containing segment of the non-combustion heated smoking article 30 through the metal tube 34 of high thermal conductivity. In fig. 5(b), although a gap is schematically illustrated, between the outer periphery of the non-combustion heated smoking article 30 and the inner periphery of the metal pipe 34, it is more desirable that no gap is provided between the outer periphery of the non-combustion heated smoking article 30 and the inner periphery of the metal pipe 34 for the purpose of efficiently conducting heat. The heating device 31 may heat the tobacco-containing segment of the non-combustion heating smoking article 30 from the outside, or may heat the tobacco-containing segment from the inside.

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

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

Examples

The present invention will be described more specifically with reference to the following examples, but the present invention is not limited to these examples.

[ example 1]

(preparation of packaging Material)

A solution (hereinafter referred to as solution a) was prepared by dissolving 21g of menthol in 9g of ethanol. 45g of PVA (Tg: 58 ℃, average degree of polymerization: 500, degree of saponification: 85 to 89 mol%) was dispersed and mixed in 116g of water heated to 80 ℃. In this process, the liquid a was added while sufficiently stirring by a stirrer to prepare a dispersion. This dispersion was coated on one side of Paper (trade name: 50NFB, manufactured by Nippon Paper Papyria, basis weight: 50 g/m)²) And drying the paper (tobacco shred side) at 60-90 ℃ to obtain the packaging material with the polymer layer with the thickness of 20-30 mu m formed on the paper. The cross section of the polymer layer was observed by SEM, and it was confirmed that the polymer layer had a porous structure.

(production of non-Combustion heating smoking article for evaluation)

A commercially available non-combustible heat-smoking article (trade name: glo regular, manufactured by British American Tobacco) was prepared. The non-combustible heated smoking article is free of volatile flavour components and comprises tobacco and glycerol as an aerosol-generating substrate in a proportion equivalent to the tobacco-containing segment. In addition, the portion of the wrapper corresponding to the tobacco-containing segment consists only of paper. The wrapping material of the portion of the non-combustion heated smoking article corresponding to the tobacco-containing segment was removed and wound to obtain a non-combustion heated smoking article for evaluation as a substitute.

(evaluation of menthol supply in smoking)

A portion of the non-combustion heating smoking article for evaluation corresponding to the Tobacco-containing segment was heated at 220 ℃ using a heating apparatus (trade name: glo, manufactured by British American Tobacco) corresponding to the above-mentioned commercially available non-combustion heating smoking article. Smoking was performed under canadian forced smoking conditions, components in the aerosol sucked were collected, vibration extraction was performed with isopropyl alcohol (IPA), and the obtained sample was subjected to GC analysis. Specifically, based on the CIR method (canadian forced smoking conditions method), 55ml is smoked per puff (one puff with an interval of 30 seconds, i.e., 2 seconds for smoking and 28 seconds for standby), and a total of 4 puffs are performed. The components of the aerosol drawn are trapped in the cambridge filter. The components trapped by the cambridge filter were extracted by shaking under 200rmp for 20 minutes using 10ml of isopropyl alcohol (IPA) as an extraction solvent. The obtained extract was subjected to GC analysis under the following conditions, and the amount of menthol was quantified at each aspiration.

Injection port temperature: 240 ℃ C

Oven temperature: after holding at 150 deg.C for 1.3 min, the temperature is raised to 240 deg.C at 70 deg.C/min and held for 5 min

Column: trade name: DB-WAX 10 m.times.0.18 mm.times.0.18 μm, manufactured by Agilent

A detector: FID

Figure 6 shows the menthol delivery efficiency per puff, which represents the proportion of menthol amount in the aerosol drawn relative to the amount of menthol contained in the non-burning heated smoking article. Table 1 shows the total menthol amount in the aerosol drawn between 4 puffs (total menthol amount) and the total menthol supply efficiency of 4 puffs.

(evaluation of stain)

After the sealed container containing the non-combustion heated smoking article for evaluation was stored at 22 ℃ and 60% relative humidity for 4 weeks, the non-combustion heated smoking article was taken out of the container, and the amount of stains occurring on the surface of the packaging material was visually evaluated. In this evaluation, the maximum diameter (L) of the stain was measured separately for those satisfying 0.9 mm. ltoreq.L < 2.7mm (small stains) and those satisfying 2.7 mm. ltoreq.L (large stains). The results of this evaluation are shown in table 2. In the present evaluation, the unit of stain means each stain which can be approximated to an ellipse (including a circle) regardless of whether it is independent from other stains. The degree of generation of stains was expressed as the number of stains generated, the presence or absence of stains, and the percentage of generation at each level in the evaluation of 200 non-combustion heated smoking articles.

Comparative example 1

A commercially available non-combustible heat smoking article (trade name: glo Menthol, manufactured by British American Tobacco) was prepared. The non-combustible heated smoking article comprises, in part, a tobacco-containing segment: menthol as a volatile flavour ingredient, and glycerol as an aerosol-generating substrate. In addition, the portion of the wrapper corresponding to the tobacco-containing segment consists only of paper. The amount of menthol contained in the non-combustion heated smoking article was larger than the amount of menthol contained in the non-combustion heated smoking article for evaluation prepared in example 1.

Evaluation was performed in the same manner as in example 1, except that the non-combustion heated smoking article described above was used. The results are shown in fig. 6 and tables 1 and 2.

[ Table 1]

[ Table 2]

As shown in fig. 6, in example 1 in which a polymer layer containing menthol was provided in the packaging material, the menthol supply efficiency was almost uniform from the first to fourth suctioning. This is presumably because menthol is slowly released from the polymer layer. On the other hand, in comparative example 1 in which the tobacco filler contained menthol and the polymer layer containing menthol was not provided in the wrapping material, the menthol supply efficiency linearly decreased from the first to fourth puffs. This is presumably because a portion of the menthol contained in the tobacco filler is vaporized in the first half of the puff.

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 aspirations. This is presumably because, in example 1, menthol was contained in the polymer layer of the packaging material, and the polymer layer of the packaging material was located near the heater of the heating device when heated. In example 1 and comparative example 1, the initial amount of menthol contained in the non-combustion heated smoking article was different, and therefore, fig. 6 and table 1 were compared based on the menthol supply efficiency.

As shown in table 2, no stain was observed on the surface of the packaging material in example 1, whereas no stain was observed in comparative example 1. This is presumably because in example 1, the presence of the polymer layer can suppress the exudation of the aerosol-generating substrate, the tobacco component, and the volatile flavor component contained in the tobacco filler.

Claims

1. A tobacco-containing segment, which is a tobacco-containing segment for non-combustion heating smoking articles, the tobacco-containing segment comprising: a tobacco filler comprising tobacco and an aerosol-generating base material, and a packaging material covering the tobacco filler ,

The packaging material comprises: paper, and a polymer layer disposed on the inner surface of the paper,

The polymer layer comprises: a polymer, and a volatile fragrance ingredient or an aerosol-generating substrate.

2. The tobacco-containing segment of claim 1, wherein:

The glass transition temperature of the polymer is 400°C or lower.

3. The tobacco-containing segment according to claim 1 or 2, wherein,

The polymer is polyvinyl alcohol.

4. The tobacco-containing segment of claim 3, wherein:

The average degree of polymerization of the polyvinyl alcohol is 1500 or less.

5. The tobacco-containing segment of claim 3 or 4, wherein,

The degree of saponification of the polyvinyl alcohol is 90 mol% or more.

6. The tobacco-containing segment according to any one of claims 1 to 5, wherein,

The polymer layer has a porous structure.

7. The tobacco-containing segment of claim 6, wherein:

The volatile fragrance ingredient or the aerosol-generating substrate is present inside the pores of the porous structure.

8. The tobacco-containing segment according to any one of claims 1 to 7, wherein,

The polymer layer includes the volatile fragrance ingredient and the aerosol-generating substrate.

9. A non-combustion heated smoking article comprising:

The tobacco-containing segment and the mouthpiece segment according to any one of claims 1 to 8.

10. A non-combustion heated smoking system comprising:

The non-combustion heated smoking article of claim 9, and

A heating device for heating the tobacco-containing segment.

11. The non-combustion heated smoking system of claim 10, wherein,

The temperature heated by the heating device is 400° C. or lower.

12. The method for producing a tobacco-containing segment according to any one of claims 1 to 8, comprising:

A step of producing the packaging material through a step of applying and drying a dispersion liquid in which the volatile fragrance component or the aerosol-generating substrate and the polymer obtained by dispersing in an aqueous dispersion medium.