CN113015446B

CN113015446B - Tobacco-containing segment and method of manufacturing the same, non-combustion heated smoking article, and non-combustion heated smoking system

Info

Publication number: CN113015446B
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: 2023-07-14
Anticipated expiration: 2039-11-12
Also published as: KR20210063415A; TW202037282A; EP3881686A4; JPWO2020100879A1; JP7034329B2; WO2020100879A1; CN113015446A; EP3881686A1

Abstract

The present invention provides a tobacco-containing segment which can reduce stains generated in a tobacco-containing segment packaging material and can always and uniformly supply volatile components contained in the tobacco-containing segment during suction. The tobacco-containing segment for a non-combustion heated smoking article comprises: a tobacco filler comprising tobacco and an aerosol-generating substrate, and a wrapper coating the tobacco filler, the wrapper comprising: a paper, and a polymer layer provided on an inner surface of the paper, the polymer layer including: a polymer, and a volatile fragrance ingredient or an aerosol-generating substrate.

Description

Tobacco-containing segment and method of manufacturing the 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 manufacturing 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 has a tobacco-containing segment formed by winding a tobacco filler, which is obtained by adding a flavor, a humectant, a proper amount of moisture, and the like to dried tobacco cut to a width of about 1mm, into a cylindrical shape, around a cylindrical shape with a paper-made wrapper, and a mouth piece segment formed by winding a fiber formed of cellulose acetate or the like or a paper-made wound roll, to which a crease is applied, around a cylindrical shape with a paper-made wrapper. The tobacco-containing segment and the mouth-piece segment are joined together by a backing paper. The user draws from the mouth end portion by igniting the tobacco-containing end portion with a lighter or the like, thereby making a puff. The front end of the tobacco-containing segment burns at a temperature exceeding 800 ℃.

As a substitute for such a usual combustion smoking article, a non-combustion heating smoking article and a non-combustion heating smoking system have been developed which use heat instead of combustion (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 less. In a non-combustion heated smoking article, a tobacco filler containing a tobacco segment comprises an aerosol-generating substrate such as glycerin, propylene Glycol (PG), triethyl citrate (TEC), or glyceryl triacetate. The aerosol-generating substrate is vaporized by heating and moved by suction to a cooling section within the mouth piece section, and upon cooling, aerosol is more reliably generated. The aerosol is sucked together with the suction, and thus, the user's feeling of satisfaction can be ensured.

The non-combustion heating smoking system generally includes: a cylindrical non-combustion heating smoking article having a shape similar to that of a usual 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 electric resistance and a heater using IH. As a heating method of the heater using electric resistance, there is mentioned: a method of heating from the outside of a non-combustion heated smoking article with a heater; a method of inserting a heater in the form of a needle or a blade from the tip of a non-combustion heated smoking article into a tobacco-containing segment containing a tobacco filler and heating the tobacco-containing segment.

Prior art literature

Patent literature

Patent document 1: japanese patent No. 5292410

Patent document 2: japanese patent No. 5771338

Patent document 3: japanese patent application laid-open No. 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 contains the aerosol-generating substrate, tobacco components, flavor components, and the like (including the aerosol components themselves ooze out) may ooze out of the paper wrapper around which the tobacco filler is wrapped, and stains may be generated on the outer surface of the wrapper.

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

The present invention aims 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 tobacco-containing segment packaging material and can always supply volatile components contained in the tobacco-containing segment uniformly during smoking.

Means for solving the problems

The tobacco-containing segment of the present invention is a tobacco-containing segment for a non-combustion heated smoking article comprising: a tobacco filler comprising tobacco and an aerosol-generating substrate, and a wrapper coating the tobacco filler, the wrapper comprising: a paper, and a polymer layer provided on an inner surface of the paper, the polymer layer including: a polymer, and a volatile fragrance ingredient or an aerosol-generating substrate.

The non-combustion heating smoking article of the present invention comprises: the tobacco-containing segment described above, and a mouth piece segment.

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

The method for producing a tobacco-containing segment of the present invention comprises: the packaging material is produced by a step of applying a dispersion liquid 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 paper.

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 tobacco-containing segment packaging material and can supply volatile components contained in the tobacco-containing segment uniformly at all times 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 photographing 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 a non-combustion heated smoking article according to the present invention.

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

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

Symbol description

1. Paper sheet

2. Polymer layer

3. Packaging material

4. Tobacco filler

5. Volatile component

10. Containing tobacco segments

11. Cigarette holder section

12. Cooling section

13. Center hole section

14. Filter tip 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 stick forming paper

21. Forming paper for outer filter stick

22. Cigarette holder lining paper

30. Non-combustion heated smoking article

31. Heating device

32. Body

33. Heater

34. Metal tube

35. Battery cell

36. Control unit

37. Concave part

Detailed Description

[ tobacco-containing segment ]

The tobacco-containing segment of the present invention is a tobacco-containing segment for a non-combustion heated smoking article comprising: a tobacco filler comprising tobacco and an aerosol-generating substrate, and a wrapper coating the tobacco filler. Here, the above-mentioned packaging material includes: paper, and a polymer layer provided on an inner surface of the paper. In addition, the polymer layer includes: a polymer, and a volatile fragrance ingredient or aerosol-generating substrate (hereinafter also referred to as a volatile ingredient).

In the present invention, the packaging material has a polymer layer on the inner surface of the paper. Due to the presence of the polymer layer, the exudation of the aerosol-generating substrate, tobacco component, and volatile flavor component contained in the tobacco filler can be suppressed, and the occurrence of stains on the packaging material can be reduced. In addition, in the present invention, the polymer layer includes: a polymer, and a volatile fragrance ingredient or an aerosol-generating substrate as volatile ingredients. The polymer layer comprises a volatile perfume ingredient or aerosol-generating substrate such that the volatile perfume ingredient or aerosol-generating substrate slowly volatilizes and evolves from the polymer layer by heating. Thus, the volatile perfume ingredient or aerosol-generating substrate is consistently and uniformly volatilized upon inhalation and supplied to the user. The following describes the details of the present invention.

(composition of tobacco-containing segment)

The present invention provides a tobacco-containing segment for a non-combustion heated smoking article, the tobacco-containing segment comprising a tobacco filler comprising tobacco and an aerosol-generating substrate, and a wrapper covering the tobacco filler, the wrapper comprising: the paper and the polymer layer provided on the inner surface of the paper are not particularly limited as long as the polymer layer contains a polymer and a volatile flavor component or an aerosol-generating substrate. An example of a 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 comprising tobacco and an aerosol-generating substrate, and a tubular wrapper 3 which encloses 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: volatile perfume ingredients or aerosol generating substrates, and polymers.

The shape of the tobacco-containing segment is not particularly limited, and may be, for example, columnar. In the case where the tobacco-containing segment is columnar, the circumference of the tobacco-containing segment is preferably 16 to 25mm, more preferably 20 to 24mm, and even more preferably 21 to 23mm. 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 even more preferably 20 to 30mm. 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 volatile flavor components, 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 having a width of 0.8 to 1.2mm may be used. When the cut tobacco is cut into the width, the length of the cut tobacco is about 5 to 20 mm. Further, the tobacco leaves after drying may be cut into cut tobacco having a width of 0.8 to 1.2mm by using a material obtained by pulverizing and homogenizing tobacco leaves to an average particle diameter of about 20 to 200. Mu.m. When the cut tobacco is cut into the width, the length of the cut tobacco is about 5 to 20 mm. The tobacco processed into the sheet may be used as a filler by being concentrated without being cut. In the same manner, in the case of cutting the dried tobacco leaves and using the same, the tobacco leaves are crushed and uniformly mixedWhen the sheet is used in the form of a converted sheet, various types of tobacco contained in the tobacco filler can be used. Yellow, burley, oriental, local, and other tobacco (Nicotiana tabacum) and yellow tobacco (Nicotiana rustica) varieties may be suitably mixed for use to achieve a target taste. Details of the variety of the tobacco are disclosed in "dictionary of tobacco, comprehensive research center of tobacco, 2009.3.31". There are several conventional methods for pulverizing tobacco and processing into homogenized pieces. The first is a sheet manufactured by a papermaking process, the second is a cast sheet manufactured by casting a thin homogenized product on a metal sheet or a metal strip after homogenizing by mixing an appropriate solvent such as water, and drying, and the third is a rolled sheet obtained by mixing an appropriate solvent such as water, homogenizing, and extruding and molding into a sheet. Details of the types of the above-mentioned homogenizers are disclosed in "dictionary of tobacco, comprehensive research center of tobacco, 2009.3.31". The aerosol-generating substrate is a material that can generate an aerosol by heating, and examples thereof include: glycerol, propylene Glycol (PG), triethyl citrate (TEC), glyceryl triacetate, 1, 3-butanediol, and the like. One kind of these may be used, or two or more kinds may be used in combination. The filling density of the tobacco filler is not particularly limited, but is usually 250mg/cm from the viewpoint of securing the performance of the non-combustion heated smoking article and imparting a good flavor ³ The above is preferably 320mg/cm ³ The above, in addition, is usually 520mg/cm ³ Hereinafter, it is preferably 420mg/cm ³ The following is given. Specifically, in the case of tobacco-containing segments having a circumference of 22mm and a length of 20mm, the content of the tobacco filler in the tobacco-containing segments may be 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, but 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, but is usually 10000ppm or more, preferably 20000ppm or more, more preferably 25000ppm or more, and is 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 packaging material is not particularly limited, and for example, the tobacco filler may be wrapped with the packaging material, or the tobacco filler may be filled in a tubular packaging material. When the shape of the tobacco has a longitudinal direction like a rectangle, the tobacco may be filled so that the longitudinal direction of the tobacco becomes an unspecified direction in the packaging material, or may be aligned in the axial direction of the tobacco-containing segment or in a direction perpendicular to the axial direction. By heating the tobacco-containing segment, the tobacco components and aerosol-generating substrate contained in the tobacco filler are vaporized and moved to the mouth-end segment by suction.

(packaging Material)

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

The paper is not particularly limited as long as it functions as a support, and the weight per unit area of the paper is preferably 25g/m from the viewpoint of being able to form a polymer layer thickly ² The above is more preferably 35 to 50g/m ² . Further, the air permeability of the paper is preferably low, and more preferably 0. The thickness of the paper is not particularly limited, and may be, for example, 30 to 60. Mu.m.

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

The type of the polymer is not particularly limited, but a biodegradable polymer or an edible polymer is preferable. In addition, from the viewpoint of releasing volatile components from the polymer layer at the heating temperature of the tobacco-containing stage, the glass transition temperature (Tg) of the polymer is preferably 400 ℃ or less, more preferably 300 ℃ or less, and further preferably 200 ℃ or less. The lower limit of Tg of the polymer is not particularly limited, and may be 40℃or higher, for example. Specifically, tg of the polymer is a value measured by a differential scanning calorimeter (trade name: DSC7000, manufactured by Hitachi High-Tech Science Co.). 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 kind of these may be used, or two or more kinds may be used in combination. Among these, PVA or polyvinyl alcohol-acrylic acid-methyl methacrylate copolymer (POVACOAT) is preferable as the polymer from the viewpoint of good coating properties on paper.

When the polymer is PVA, the average degree of polymerization of PVA is preferably 1500 or less. By setting the average degree of polymerization of PVA to 1500 or less, the coating property on paper is improved, and a polymer layer can be uniformly formed on the paper. The average degree of polymerization of PVA is preferably 100 to 1300, more preferably 300 to 1200, particularly preferably 500 to 1000. The average degree of polymerization of PVA was determined according to the test method of polyvinyl alcohol of JIS K6726-1994.

In the case where the polymer is PVA, the saponification degree of PVA is preferably 90 mol% or more. By setting the saponification degree of PVA to 90 mol% or more, the solubility of PVA in water is reduced, and the emission of volatile components due to the dissolution of PVA in water can be suppressed, so that the volatile components can be stably held in the polymer layer. The saponification degree of PVA is preferably 90 mol% or more and 99 mol% or less, more preferably 93 mol% or more and 98 mol% or less. The degree of saponification of PVA was measured according to the test method of polyvinyl alcohol in JIS K6726-1994.

The type of the volatile perfume component is not particularly limited, and from the viewpoint of imparting a good odor absorption, examples thereof include: acetoanisole, acetophenone, acetylpyrazine, 2-acetylthiazole, alfalfa extract, pentanol, amyl butyrate, trans-anethole, star anise oil, apple juice, peruvian balsam oil, beeswax absolute (beefwox absolute), benzaldehyde, benzoin resin (Benzoin resinoid), benzyl alcohol, benzyl benzoate, benzyl phenyl acetate, 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, cinnamic acid cinnamyl ester, citronella oil, DL-citronellol, sage extract, cocoa butter, and mixtures thereof coffee, wellness oil, caraway oil, cumin, caraway 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-methylbutanoate, 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, 2-ethyl-3, (5 or 6) -dimethylpyrazine, 5-ethyl-3-hydroxy-4-methyl-2 (5H) -furan, 2-ethyl-3-methylpyrazine, eucalyptol, trigonella absolute (Fenugreek absolute), cytisine absolute, gentian infusion (gentian root infusion), geraniol, geranyl acetate, grape juice, guaiacol, guava extract, gamma-heptanolactone, gamma-caprolactone, caproic acid, cis-3-hexen-1-ol, hexyl acetate, hexanol, hexyl phenylacetate, honey, 4-hydroxy-3-pentenoic acid lactone, 4-hydroxy-4- (3-hydroxy-1-butenyl) -3, 5-trimethyl-2-cyclohexen-1-one, 4- (p-hydroxyphenyl) -2-butanone sodium 4-hydroxyundecanoate, guayule absolute (immortelle absolute), beta-ionone, isoamyl acetate, isoamyl butyrate, isoamyl phenylacetate, isobutyl acetate, isobutyl phenylacetate, jasmin absolute (jasmin absolute), cola tincture, labdanum oil, terpeneless lemon oil, licorice extract, linalool, linalyl acetate, angelate oil (a low oil), maltol, maple syrup, menthol, menthone, L-menthyl acetate, p-methoxybenzaldehyde, methyl-2-pyrrolidone, methyl anthranilate, methyl phenylacetate, methyl salicylate, 4' -methylacetophenone, methylcyclopentenone, 3-methylpentanoic acid, mimosa absolute (mimosa absolute), molasses, myristic acid, nerol, nerolidol, gamma-nonolactone, nutmeg oil, delta-octalactone, octaldehyde, caprylic acid, neroli oil, orange oil, iris root oil, palmitic acid, omega-valerolactone, peppermint oil, orange leaf oil (petitgrain oil paraguay), phenethyl alcohol, phenethyl phenylacetate, phenylacetic acid, piperonal, plum extract, propenyl guaiacol, 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, terpineol 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-trimethyl-1, 3-cyclohexenyl) 2-buten-4-one, 2, 6-trimethyl-2-cyclohexene-1, 4-dione, 4- (2, 6-trimethyl-1, 3-cyclohexadienyl) 2-buten-4-one, 2,3, 5-trimethylpyrazine, gamma-undecalactone, gamma-valerolactone, vanilla, vanillin, veratrole, tobacco leaf absolute (Violet leaf absolute), tobacco plants (tobacco leaves, stems, tobacco flowers), tobacco root, and tobacco seed), menthol is particularly preferred. In addition, one kind of these volatile perfume ingredients may be used alone, or two or more kinds may be used in combination. The aerosol-generating substrate is a material that can generate an aerosol by heating, and examples thereof include, but are not particularly limited to: glycerol, propylene Glycol (PG), triethyl citrate (TEC), glyceryl triacetate, 1, 3-butanediol, and the like. One kind of these materials may be used, or two or more kinds 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 polymer 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 having a volatile component in the pores of the porous structure, a part of the porous structure is destroyed by heating, and the volatile component in the inside is slowly released. Thus, the volatile component can be uniformly supplied at all times during the suction. An SEM image obtained by photographing a cross section of an example of the polymer layer having a porous structure of the present invention at 1500 times is shown in fig. 3. In fig. 3, the polymer layer 2 formed on the paper 1 has a plurality of fine pores, and volatile components are present in 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, more preferably 1 μm or more and 10 μm or less. The average pore diameter of the porous structure was determined by CD-SEM.

The method for forming the porous structure is not particularly limited, and, for example, as will be described later, when a coating liquid for a polymer layer is prepared, if a polymer or a volatile component is emulsified by an emulsifier, micelles are formed, and thus, a 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 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 held on the paper in a sufficient amount, and the volatile component can be supplied more uniformly at all times during suction. In addition, by setting the thickness of the polymer layer to 60 μm or less, the heat conductivity from the heater can be improved when heating is performed from the outside of the tobacco-containing segment by the heater. The thickness of the polymer layer is more preferably 15 μm or more and 50 μm or less, still more preferably 20 μm or more and 40 μm or less.

[ method for producing tobacco-containing segment ]

The method for producing a tobacco-containing segment of the present invention comprises: the packaging material is produced by a step of applying a dispersion liquid 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 paper. The tobacco-containing segments of the present invention can be suitably manufactured according to the above-described method.

First, a dispersion liquid is prepared in which a polymer, a volatile perfume component or an aerosol-generating substrate is dispersed in an aqueous dispersion medium. A dispersion of the polymer, the volatile flavor component, and the aerosol-generating substrate in an aqueous dispersion medium can be prepared. For example, in the case of using a component that is solid at normal temperature, such as menthol, 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 component may be dissolved in ethanol, and a polymer and an emulsifier, if necessary, may be added thereto to prepare a dispersion. Examples of the emulsifier include glycerin fatty acid ester, sucrose fatty acid ester, and lecithin. One kind of these may be used, or two or more kinds 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 (aqueous ethanol solution). When the dispersion is applied and dried, ethanol and water are volatilized and removed, and thus 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 is present in the pores. In the case of using an emulsifier, micelles containing ethanol, the emulsifier and the solid component are formed. If 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 is present in the pores. The pore size of the porous structure may be adjusted by the amount of the emulsifier, etc., for example, the smaller the amount of the emulsifier, the larger the pore size. The case where the pore size is large is preferable from the viewpoint of sufficiently retaining the volatile component in the pores and gradually releasing it by heating. That is, the amount of the emulsifier 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% by mass or more and 30% by mass or less. In the case of using ethanol, 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 mass% or more and 20 mass% or less.

Next, the above dispersion was coated on paper and dried. The coating amount of the above dispersion to the paper may be appropriately selected according to the thickness of the polymer layer to be formed. The temperature at the time of drying may be, for example, 60 ℃ to 200 ℃. Thus, a packaging material in which a polymer layer is 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 the packaging material, or the tobacco filler may be filled in a tubular packaging material. When the shape of the tobacco has a longitudinal direction like a rectangle, the tobacco may be filled so that the longitudinal direction of the tobacco becomes an unspecified direction in the packaging material, or may be aligned in the axial direction of the tobacco-containing segment or in a direction perpendicular to the axial direction.

[ non-Combustion heating smoking article ]

The non-combustion heating smoking article of the present invention comprises: the tobacco-containing segment, and the mouth piece of the present invention. The non-combustion heated smoking article includes the tobacco-containing segment of the present invention, and therefore, can reduce stains generated in the wrapper, and can supply volatile components uniformly at all times during smoking. The non-combustion heated smoking article of the invention may have segments other than the tobacco and mouth segments.

An example of a non-combustion heated smoking article of the present invention is shown in figure 4. The non-combustion heated smoking article 30 shown in fig. 4 includes: the tobacco-containing segment 10, and the mouth piece segment 11 of the present invention. The mouth piece 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 section 12 is constituted by a cylindrical member 15. The tubular member 15 may be, for example, a paper tube obtained by processing thick paper into a cylindrical shape. The tubular member 15 and a mouthpiece backing paper 22 described later are provided with perforations 16 penetrating both. By the presence of the perforations 16, during suction, outside air is introduced into the cooling section 12. By this, the tobacco-containing segment 10 is heated, and the gasified volatile component is brought into contact with the outside air, and the temperature thereof is lowered, so that the volatile component is liquefied to form an aerosol. The diameter (diameter length) of the through hole 16 is not particularly limited, and may be, for example, 0.5 to 1.5mm. The number of the perforations 16 is not particularly limited, and may be 1 or 2 or more. For example, a plurality of perforations 16 may be provided on the outer periphery of the cooling section 12.

The central bore section is composed of a filler layer having 1 or more hollow portions, and an inner plug wrap wrapping the filler layer. For example, the center hole segment 13 is constituted by a first filler layer 17 having a hollow portion, and a first inner plug wrap 18 wrapping the first filler layer 17. The central bore segment 13 has the function of increasing the strength of the mouth piece segment 11. The first filler layer 17 is filled with, for example, cellulose acetate fibers at a high density, and 6 to 20 mass% of a plasticizer containing triacetin can be added to the mass of cellulose acetate, and cured to form an inner diameter

Is provided. Since the first filler layer 17 has a high packing density of fibers, air and aerosol flow only in the hollow portion during suction, and hardly flow in the first filler layer 17And (5) moving. In the non-combustion heated smoking article 30, when it is desired to reduce the reduction of aerosol components in the filter segment 14 due to filtration, it is effective to reduce the length of the filter segment 14 and replace it in the central hole segment 13 in order to increase the amount of aerosol component transferred. The first filling layer 17 inside the central hole section 13 is a fibrous filling layer, and thus the feeling from the outside in use is less uncomfortable for the user.

The filter segment 14 is made up of a second filler layer 19 and a second inner plug wrap 20 wrapping 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 combustion smoking article. During the suction, air and aerosol pass through the second filling layer 19, and a part of the aerosol is filtered. The second filler layer 19 may be a filler layer of cellulose acetate fibers, for example.

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, cylindrical paper. In addition, the tobacco-containing segment 10, the cooling segment 12, and the already joined central bore segment 13 and filter segment 14 are joined together by a tipping paper 22. The connection may be performed by, for example, applying a paste such as a vinyl acetate paste on the inner surface of the tipping paper 22, and winding the 3 segments. After connection, perforations 16 may be provided in the cooling section 12.

The length in the axial direction of the non-combustion heated smoking article of the present invention, i.e. in the horizontal direction in fig. 4, is not particularly limited, but is preferably 40 to 90mm, more preferably 50 to 75mm, still more preferably 50 to 60mm. The circumferential length of the non-combustion heated smoking article is preferably 16 to 25mm, more preferably 20 to 24mm, and even more preferably 21 to 23mm. Examples thereof include: the length of the tobacco-containing segment 10 is 20mm, the length of the cooling segment 12 is 20mm, the length of the central bore segment 13 is 8mm, and the length of the filter segment 14 is 7 mm. The 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 invention, and a heating device for heating a tobacco-containing segment. The non-combustion heating smoking system includes the non-combustion heating smoking article of the present invention, and therefore, can reduce stains generated in the packaging material, and can supply volatile components uniformly at all times 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 described above, and may have other configurations.

An example of a non-combustion heated smoking system of the present invention is shown in figure 5. The non-combustion heating smoking system shown in fig. 5 includes: the non-combustion heated smoking article 30 of the present invention, and a heating device 31 for heating the tobacco-containing segment of the non-combustion heated smoking article 30 from the outside. Fig. 5 (a) shows a state before the non-combustion heating smoking article 30 is inserted into the heating device 31, and fig. 5 (b) shows a state in which the non-combustion heating smoking article 30 is inserted into the heating device 31 and heated. The heating device 31 shown in fig. 5 includes: a body 32, a heater 33, a metal tube 34, a battery unit 35, and a control unit 36. The main body 32 has a cylindrical recess 37, and the heater 33 and the metal tube 34 are disposed on the inner side surface of the recess 37 at positions corresponding to the tobacco-containing segments of the non-combustion heated smoking article 30 inserted into the recess 37. The heater 33 may be a heater using electric resistance, and the heater 33 may be heated by supplying electric power from the battery unit 35 in response to an instruction from the temperature control unit 36. The heat emitted from the heater 33 is transferred through the metal tube 34, which has a high thermal conductivity, to the tobacco-containing segment of the non-combustion heated smoking article 30. In fig. 5 (b), a gap is schematically illustrated, so that there is a gap between the outer periphery of the non-combustion heated smoking article 30 and the inner periphery of the metal tube 34, but in practice, for the purpose of efficiently conducting heat, it is more desirable that there is no gap between the outer periphery of the non-combustion heated smoking article 30 and the inner periphery of the metal tube 34. The heating device 31 may heat the tobacco-containing segment of the non-combustion heated 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 still more preferably 200 ℃ or higher and 350 ℃ or lower. The heating temperature means the temperature of the heater of the heating device.

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 segment. Since the polymer layer is located near the heater of the heating device when heated, the volatile component contained in the polymer layer is slowly released, but can be released in a sufficient amount over a long period of time.

Examples

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

Example 1

(production of packaging Material)

A liquid (hereinafter referred to as liquid a) obtained by dissolving 21g of menthol in 9g of ethanol was prepared. 45g of PVA (Tg: 58 ℃, average polymerization degree: 500, saponification degree: 85 to 89 mol%) was dispersed and mixed with 116g of water heated to 80 ℃. In this process, the liquid a was added while being sufficiently stirred by a stirrer to prepare a dispersion. The dispersion was applied to paper (trade name: 50NFB, manufactured by Nippon Paper Papylia, weight per unit area: 50 g/m) ² ) And drying at 60-90 deg.c to obtain the packing material with polymer layer of 20-30 microns thickness. The cross section of the polymer layer was observed by SEM, and as a result, it was confirmed that the polymer layer had a porous structure.

(production of non-combustible heated smoking article for evaluation)

Commercially available non-combustible heated smoking articles (trade name: manufactured by glo regulated, british American Tobacco Co.) were prepared. The non-combustion heated smoking article is free of volatile flavour components and the portion corresponding to the tobacco-containing segment comprises tobacco and glycerol as an aerosol-generating substrate. In addition, the wrapping material of the portion corresponding to the tobacco-containing segment is composed of only paper. The wrapping material of the non-combustion heated smoking article corresponding to the tobacco-containing segment was removed, and the wrapped wrapping material was replaced to obtain a non-combustion heated smoking article for evaluation.

(menthol supply evaluation during smoking)

The non-combustion heated smoking article for evaluation was heated at 220℃using a heating device (trade name: manufactured by glo, british American Tobacco Co.) corresponding to the commercially available non-combustion heated smoking article. Smoking was performed under Canadian forced smoking conditions, components in the smoked aerosol were collected, and the sample was subjected to vibration extraction with isopropyl alcohol (IPA) and GC analysis. Specifically, based on the CIR method (canadian forced smoking condition method), 55ml was smoked (one puff was taken at 30-second intervals, that is, 2 seconds and standby was performed for 28 seconds) in each puff, and a total of 4 puffs were performed. The components of the aspirated aerosol are trapped in the Cambridge filter. The components trapped in the Cambridge filter were subjected to vibration extraction under conditions of 20 minutes and 200rmp 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 DEG C

Oven temperature: after maintaining at 150℃for 1.3 minutes, the temperature was raised to 240℃at 70℃per minute and maintained for 5 minutes

Column: trade name: DB-WAX 10 mX0.18 mm X0.18 μm manufactured by Agilent Co

A detector: FID (FID)

Fig. 6 shows menthol supply efficiency indicating a ratio of the amount of menthol in the aerosol sucked with respect to the amount of menthol contained in the non-combustion heated smoking article, for each suction. Table 1 shows the total menthol amount (total menthol amount) in the aerosol sucked between 4 puffs and the total menthol supply efficiency of 4 puffs.

(evaluation of stains)

After the sealed container in which the non-combustion heated smoking articles for evaluation were placed was stored in an environment at a temperature of 22 ℃ and a relative humidity of 60% for 4 weeks, the non-combustion heated smoking articles were taken out of the container, and the number of stains generated on the surface of the packaging material was visually evaluated. In this evaluation, the maximum diameter (L) of the stain was measured by distinguishing between those satisfying 0.9 mm.ltoreq.L < 2.7mm (small stains) and those satisfying 2.7 mm.ltoreq.L (large stains). The results of the evaluation are shown in table 2. In this evaluation, the unit of the stain means each stain which can be approximated to an ellipse (including a circle) regardless of whether or not it is independent of other stains. The degree of occurrence of the stain was expressed by the number of occurrence of the stain, the presence or absence of the size, and the percentage of occurrence of each level in the evaluation of 200 non-combustion heated smoking articles.

Comparative example 1

Commercially available non-combustible heated smoking articles (trade name: glo Menthol, manufactured by British American Tobacco Co.) were prepared. The portion of the non-combustion heated smoking article corresponding to the tobacco-containing segment comprises: menthol as a volatile flavour ingredient, and glycerol as an aerosol-generating substrate. In addition, the wrapping material of the portion corresponding to the tobacco-containing segment is composed of only paper. The amount of menthol contained in the non-combustion heated smoking article was larger than the amount of menthol contained in the non-combustion heated smoking article for evaluation produced in example 1.

The same evaluation as in example 1 was performed, except that the above non-combustion heated smoking article 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 a packaging material, menthol supply efficiency was almost uniform from the first to fourth suction. This is presumably because menthol is slowly evolved from the polymer layer. On the other hand, in comparative example 1 in which the tobacco filler contains menthol and the polymer layer containing menthol is not provided in the wrapping material, the menthol supply efficiency linearly decreases from the first to the fourth suction. This is presumed to be because menthol contained in the tobacco filler is partially gasified in the first half of the suction.

As shown in table 1, in the total of 4 puffs, example 1 had higher menthol supply efficiency than comparative example 1. This is presumed to be because, in example 1, menthol is contained in the polymer layer of the packaging material, and the polymer layer of the packaging material is located near the heater of the heating device when heated. In example 1 and comparative example 1, the initial menthol amount contained in the non-combustion heated smoking article was different, and thus, in fig. 6 and table 1, comparison was made based on menthol supply efficiency.

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

Claims

1. A tobacco-containing segment for a non-combustion heated smoking article, the tobacco-containing segment comprising: a tobacco filler comprising tobacco and an aerosol-generating substrate, and a wrapper surrounding the tobacco filler,

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

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

the thickness of the polymer layer is 15 μm or more and 50 μm or less,

the glass transition temperature of the polymer is 40-400 ℃.

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

the polymer is polyvinyl alcohol.

3. The tobacco-containing segment of claim 2, wherein,

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

4. The tobacco-containing segment of claim 2, wherein,

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

5. The tobacco-containing segment of claim 1 wherein,

the polymer layer has a porous structure.

6. The tobacco-containing segment of claim 5 wherein,

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

7. The tobacco-containing segment of claim 1 wherein,

the polymeric layer comprises the volatile perfume ingredient and the aerosol-generating substrate.

8. A non-combustion heated smoking article, comprising:

the tobacco-containing segment, and mouth piece of any one of claims 1-7.

9. A non-combustion heated smoking system, comprising:

the non-combustion heated smoking article of claim 8, and

and a heating device for heating the tobacco-containing segment.

10. The non-combustion heated smoking system of claim 9, wherein,

the temperature of heating by the heating device is below 400 ℃.

11. A method of producing the tobacco-containing segment according to any one of claims 1 to 7, comprising:

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