CN118139537A

CN118139537A - Material for flavor-absorbing article, heated flavor-absorbing article, and heated flavor-absorbing system

Info

Publication number: CN118139537A
Application number: CN202280070318.XA
Authority: CN
Inventors: 小出明弘; 打井公隆; 松田尚大; 桥本彩香; 七崎裕介
Original assignee: Japan Tobacco Inc
Current assignee: Japan Tobacco Inc
Priority date: 2021-10-18
Filing date: 2022-10-17
Publication date: 2024-06-04
Also published as: CN118215411A; WO2023089859A1

Abstract

A material for flavor smoking articles is prepared by mixing a cellulosic substrate with nicotine.

Description

Material for flavor-absorbing article, heated flavor-absorbing article, and heated flavor-absorbing system

Technical Field

The present invention relates to a material for a flavor-absorbing article, a heated flavor-absorbing article, and a method for producing a material for a flavor-absorbing article.

Background

In recent years, in order to suppress the generation of smoke, a heated type flavor-absorbing article capable of absorbing tobacco components without accompanying combustion has been provided.

Among materials for flavor-absorbing articles forming heated flavor-absorbing articles, materials containing nicotine and menthol as a flavor are also known. The material for flavor-absorbing articles comprises a cellulose-based substrate, an extract of tobacco, and, if necessary, a polyol as an aerosol-based substrate. The temperature of the equipment for heating the heated type flavor smoking article is usually 200 ℃ or higher, and there are a large amount of substances that are pleasant to smoke from the polyol. For example, patent document 1 discloses a heated type flavor-absorbing article in which a material for the flavor-absorbing article is heated based on a specific temperature profile including a temperature range of 200 ℃.

Prior art literature

Patent literature

Patent document 1: international publication No. 2018/019855

Disclosure of Invention

Problems to be solved by the invention

The inventors have conceived that the convenience of the user can be improved as long as smoking can be enjoyed at a lower temperature. However, as described in patent document 1, in the conventional heated type flavor-absorbing article, it is difficult to obtain a satisfactory feel without heating the material for the flavor-absorbing article to 200 ℃. In view of the above, an object of the present invention is to provide a material for a heated flavor-absorbing article that can be used at a low heating temperature.

Means for solving the problems

The present inventors have made intensive studies to solve the above problems, and as a result, have found that the above problems can be solved by mixing a cellulose-based substrate with nicotine, and have completed the present invention. The specific modes of the present invention are as follows.

Mode 1

Mode 2

The material for flavor-absorbing articles according to claim 1, further comprising a fibrous material, wherein the material for flavor-absorbing articles is a tobacco sheet for a non-combustion heating type flavor-absorbing article.

Mode 3

The material for flavor-absorbing articles according to claim 2, wherein the fibrous material is contained in a proportion of 5 to 50% by weight in 100% by weight of the material for flavor-absorbing articles.

Mode 4

A non-combustion heating type flavor aspirator comprising a tobacco-containing segment containing the flavor-absorbing material according to any one of aspects 1 to 3.

Mode 5

A non-combustion heated flavor pumping system, comprising:

the non-combustion heating type flavor aspirator and the method of embodiment 4

And a heating device for heating the tobacco-containing section.

ADVANTAGEOUS EFFECTS OF INVENTION

The material for flavor-absorbing articles of the present invention can be used at a low heating temperature.

Drawings

Fig. 1 is a schematic cross-sectional view showing an example of a non-combustion heating type smoking system.

Fig. 2 is a schematic cross-sectional view showing an example of a non-combustion heating type flavor-absorbing article.

Fig. 3 is a graph showing a relationship between a filling amount of nicotine and release efficiency of nicotine in the example.

Fig. 4 is a graph showing the relationship between the filling amount of menthol and the release efficiency of menthol in the example.

Symbol description

10. Heating device

11. Body of machine

12. Heater

20 Non-combustion heated flavor smoking article

20A smoking segment

20B connecting portion

20C filter part

21 Smoking composition sheet or material derived from the sheet

22. Packaging material

23. Paper tube

24. Vent hole part

251 St section

25A 1 st filling layer

25B inner rod packing material

26 Section 2

26A 2 nd filler layer

26B inner rod packing material

27. Outer rod packaging material

28. Packaging material

Detailed Description

Hereinafter, the material for flavor-absorbing articles and the method for producing the material for flavor-absorbing articles according to the present application will be described.

1. Material for flavor-absorbing article

In some embodiments of the application, the flavor smoking article material is a blend of a cellulosic substrate and nicotine.

The method for mixing the cellulose base material and nicotine is not particularly limited, and it is preferable to mix the cellulose base material and nicotine by supplying the nicotine from the outside of the cellulose base material. By supplying nicotine from outside the cellulose-based substrate, at least a part of the nicotine can be present on the surface of the cellulose-based substrate. Thus, when nicotine is present in the cellulose base material, nicotine is easily released to the outside of the material for flavor-absorbing articles, and as a result, nicotine can be sufficiently released even at a heating temperature lower than that of conventional 200 ℃ or higher. Here, the surface of the cellulose-based substrate may have a large number of pores (having a porous shape), and in this case, the surface of the cellulose-based substrate also includes portions inside the pores.

The cellulose-based substrate is not particularly limited, and examples thereof include tobacco leaves, cured tobacco leaves, processed tobacco leaves, tobacco fillers, non-tobacco materials, or a combination of 2 or more thereof. Among them, from the viewpoint of preventing impurities, a cellulose material derived from non-tobacco is preferable, and if impurities are small, cellulose derived from tobacco is also free from problems.

Tobacco leaves, cured tobacco leaves and processed tobacco leaves >, and method for producing the same

In the present specification, "tobacco leaf" refers to the leaf of harvested tobacco, and refers to the leaf before curing, which will be described later. One way of curing includes drying (curing).

In contrast, tobacco leaves that have undergone curing and prior to being processed into various forms (cut tobacco, tobacco flakes, tobacco particles, etc., described below) that are utilized as tobacco products are referred to as "cured tobacco leaves". Further, tobacco leaves in various forms that are used as tobacco products by processing cured tobacco leaves are called "processed tobacco leaves".

As the form of the processed tobacco leaves used as the tobacco product, for example, "cut tobacco" obtained by finely cutting cured tobacco leaves into a predetermined size can be mentioned. In addition, there may be mentioned: a composition comprising a product obtained by pulverizing cured tobacco leaves into a predetermined particle size (hereinafter also referred to as "tobacco fine powder") is molded into a sheet-shaped "tobacco sheet", and "tobacco particles" obtained by molding into a particle shape. The "tobacco fine powder" is also one form of the processed tobacco leaf.

< Tobacco filler >)

Tobacco filler refers to a material in which processed tobacco leaves are filled with the filler in a given manner. "filler" means the object to which the processed tobacco leaves are filled, as part of the tobacco product. Examples of the filler include a roll paper made into a tubular shape, and a container having an air inlet and an air outlet, but are not limited thereto.

As a method of filling the tobacco leaves to be processed with the filler, there are: the method of filling the processed tobacco leaves with the roll paper so as to be inside (hereinafter, also referred to as "tobacco rod"), the method of filling the processed tobacco leaves with the flow path of the housing having the air inlet and outlet (hereinafter, also referred to as "tobacco tube (carrtridge)"), and the like are not limited thereto.

As the tobacco filler, there may be mentioned: a tobacco filler made of cut tobacco filled with a filler (hereinafter also referred to as "first tobacco filler"), a tobacco filler made of tobacco sheets filled with a filler (hereinafter also referred to as "second tobacco filler"), a tobacco filler made of tobacco particles filled with a filler (hereinafter also referred to as "third tobacco filler"), and the like.

As non-tobacco materials, there may be mentioned: roots (including scales (bulbs), tubers (taros), bulbs, etc.), stems, tubers, barks (including stem barks, bark, etc.), leaves, flowers (including petals, pistils, stamens, etc.), or seed fruits, or trunks, branches, etc. of trees.

The content of the cellulose base material relative to the entire material for a flavor-absorbing article is not particularly limited, but is preferably 0.1 to 80% by weight, more preferably 1 to 75% by weight, and most preferably 5 to 50% by weight from the viewpoint of shape stability.

The nicotine is not particularly limited, and synthetic nicotine, isolated nicotine, or a combination thereof may be selected.

The content of nicotine in the entire flavor smoking article material is not particularly limited, but from the viewpoint of the nicotine concentration in general tobacco, the lower limit is preferably 2% by weight or more, and the upper limit may be 10% by weight or less, 8% by weight or less, or 7% by weight or less. The above numerical range of the content of nicotine may be applied to the content of nicotine added from the outside, the content of nicotine from tobacco, or the total of the contents thereof.

In some embodiments, the flavor smoking article material may further comprise menthol. By further including menthol in the flavor-absorbing material, a refreshing and cooling sensation can be obtained.

In the case where the material for flavor-absorbing articles contains menthol, the content of menthol relative to the entire material for flavor-absorbing articles is not particularly limited, but from the viewpoint of the concentration in a general tobacco product, the lower limit is preferably 6% by weight or more, and the upper limit may be 25% by weight or less, 23% by weight or less, or 20% by weight or less.

In some embodiments, the flavor smoking article material may further comprise myristic acid, palmitic acid, or a mixture thereof as other ingredients.

The form of the material for the flavor-absorbing article is not particularly limited, and may be formed into particles or sheets (tobacco particles or tobacco sheets), and among them, particles are preferable from the viewpoint of stabilizing the filling weight. Further, since a raw material derived from tobacco is preferably used as the cellulose-based substrate, the material for flavor-absorbing articles is more preferably tobacco particles or tobacco sheets, and particularly preferably tobacco particles. This will be described in detail below.

< Tobacco particles >)

As described above, the tobacco particles are obtained by molding a composition comprising cured tobacco leaves into a particle shape.

Method for shaping tobacco particles

The method of molding the tobacco particles is not particularly limited, and for example, the tobacco particles can be obtained by: the tobacco fine powder, nicotine, a flavor development aid, a binder, and an aerosol-generating substrate and a flavor, which are added as desired, are mixed, water is added to the mixture, the mixture is kneaded, and the obtained kneaded product is granulated (long-column-shaped) by a wet extrusion granulator, and is granulated into short columns or spheres. The tobacco particles comprise both nicotine from a raw material source of tobacco and added nicotine.

In the extrusion granulation, the kneaded product is preferably extruded at a pressure of 2kN or more at ambient temperature. By extrusion under such high pressure, the temperature of the kneaded material at the outlet of the extruder granulator is instantaneously and rapidly increased from the ambient temperature to, for example, 90 to 100 ℃, and water and volatile components are evaporated by 2 to 4 wt%. Therefore, the water blended for producing the kneaded material can be used in an amount larger than the desired water content in the tobacco particles as the final product.

The tobacco particles obtained by extrusion granulation may be further dried as needed for moisture adjustment. For example, the dry weight loss of tobacco particles obtained by extrusion granulation is measured, and in the case where it is higher than the desired dry weight loss (for example, 5% by weight or more and 17% by weight or less), the tobacco particles may be further dried in order to obtain the desired dry weight loss. The drying conditions (temperature and time) required to obtain the desired drying weight reduction may be determined in advance so as to reduce the drying weight reduction by only a given value, and may be set based on the conditions.

< Tobacco sheet >)

As described above, the tobacco sheet is obtained by molding a composition including cured tobacco leaves and the like into a sheet shape. The cured tobacco leaves used for the tobacco sheet are not particularly limited, and examples thereof include tobacco leaves from which stems are removed and leaves and veins are separated. In the present specification, the term "sheet" means a shape having 1 pair of main surfaces and side surfaces which are substantially parallel to each other.

Method for forming tobacco sheet

The method for molding the tobacco sheet is not particularly limited, and for example, fine tobacco powder, nicotine, a flavor development aid, a binder, and an aerosol-generating substrate and a flavor to be added may be mixed, water may be added to the mixture and kneaded, and the obtained kneaded product may be molded by a known method such as a papermaking method, a casting method, or a calendaring method. Various tobacco sheets molded by such a method are disclosed in detail in "topical reference book for tobacco, center for tobacco general study, 2009.3.31".

In the case where the material for flavor-absorbing articles is in the form of particles, the particle diameter of the particles is not particularly limited, but is preferably 250 μm or more, more preferably 250 to 850 μm, and most preferably 250 to 500 μm from the viewpoint of improving the release efficiency of nicotine and/or menthol described later. The smaller the particle diameter of the particles, the higher the release efficiency of nicotine and/or menthol described later. The average particle diameter (D50) of the particles is not limited, but is preferably 250 to 450 μm, more preferably 250 to 400 μm, and most preferably 250 to 300 μm from the viewpoint of improving the release efficiency of nicotine and/or menthol described later.

The particle diameter and the average particle diameter (D50) of the particles can be measured by a laser diffraction method under dry conditions using a scattering particle diameter distribution measuring apparatus (Partica, manufactured by Yamato Scientific).

When the material for flavor-absorbing articles is in the form of particles, the average surface area per 1 particle is not particularly limited, but from the viewpoint of improving the release efficiency of nicotine and/or menthol described later, it is preferably 0.1 to 2.5mm ², more preferably 0.1 to 1.5mm ², and most preferably 0.1 to 0.8mm ². The smaller the average surface area per 1 particle, the higher the release efficiency of nicotine and/or menthol to be described later. For the average surface area of each 1 of the particles, the particles can be regarded as spheres, and the calculation is performed based on the following formula (1).

S＝4πr² (1)

S: average surface area of each 1 particle

Pi: circumference ratio

R: radius of the particle (the particle diameter of the above particle multiplied by 1/2)

In some embodiments, the release efficiency of nicotine per 10 puffs on average in the case of heating and sucking the flavor-sucking article material at 55 ℃ is not particularly limited, and the lower limit thereof is preferably 0.6% or more, and the upper limit thereof may be 5.0% or less, 2.5% or less, or 2.1% or less.

In some embodiments, the material for flavor-absorbing articles is not particularly limited in the release efficiency of nicotine per 10-times-average-time-absorption at 70 ℃ heating, and the lower limit is preferably 1.8% or more, and the upper limit may be 6.0% or less, 5.5% or less, or 5.0% or less.

In some embodiments, the release efficiency of menthol per 10 puffs on average at the time of heat-pumping at 55 ℃ of the material for flavor-pumped articles is not particularly limited, and the lower limit thereof is preferably 4% or more, and the upper limit thereof may be set to 15.0%, 13.0% or 10.2%.

In some embodiments, the release efficiency of menthol per 10 puffs on average in the heating and smoking article material at 70 ℃ is not particularly limited, and the lower limit thereof is preferably 7% or more, and the upper limit thereof may be 20.0% or less, 18.0% or less, or 16.6% or less.

In some embodiments, the total particulate matter (TPM: total particulate matter) of the material for flavor-absorbing articles upon heat-absorbing at 55℃is not particularly limited, and may be set to 0.5 to 10.0mg, 0.7 to 7.0mg, or 0.8 to 5.0mg from the viewpoint of the filling amount.

In some embodiments, the Total Particulate Matter (TPM) of the material for flavor-absorbing articles upon heat absorption at 70℃is not particularly limited, and may be set to 0.8 to 15.0mg, 1.0 to 10.0mg, or 1.3 to 7.8mg from the viewpoint of the filling amount.

The release efficiency of nicotine or menthol per 10 puffs on average at 55℃or 70℃and the Total Particulate Matter (TPM) at 55℃or 70℃can be calculated by the method described in the examples (analysis of nicotine and menthol released from tobacco particles) described below.

2. Method for producing material for flavor-absorbing article

In some embodiments, the material for a flavor-absorbing article described in item 1 above may be produced by a production method comprising:

a step of preparing the cellulose base material and the nicotine, and

And a step of supplying the nicotine from outside the cellulose base material and applying at least a part of the nicotine to the surface of the cellulose base material.

In the above-described method for producing a material for a flavor-absorbing article, the material derived from tobacco may be used as a cellulose base material, and the material may be preformed into a form of tobacco particles or tobacco sheets, and nicotine may be supplied from the outside to such cellulose base material, whereby the obtained form of the material for a flavor-absorbing article may be finally formed into tobacco particles or tobacco sheets.

The nicotine is not particularly limited, and it may be supplied from outside the cellulose base material, for example, by spraying under a pressure of 0.1 Mpa. The pressure conditions in the case of nicotine supply by spraying are not particularly limited, but are preferably 0.05 to 2.5MPa, more preferably 0.05 to 2.0MPa, and most preferably 1.00 to 1.50MPa. When the pressure at the time of nicotine supply is within the above-mentioned numerical range, nicotine can be efficiently attached to the surface of the cellulose base material, and as a result, the release efficiency of nicotine and/or menthol can be further improved.

3. Fragrance smoking article

In some embodiments, a flavor-absorbing article, particularly a heated flavor-absorbing article, comprising the flavor-absorbing article material described in item 1 above can be made.

In the present application, the "flavor-absorbing article" refers to an article that is smoked by a user to taste a flavor. The flavor smoking articles can be broadly classified into combustion type flavor smoking articles typified by conventional cigarettes and non-combustion type flavor smoking articles.

Examples of the combustion type flavor-absorbing article include: cigarettes, pipes, pouches, cigars, or Cigarillos (CIGARILLO), and the like.

The non-combustion heating type flavor-suctioned article (heating type flavor-suctioned article) may be heated by a heating device separate from the article, or may be heated by a heating device integral with the article. Among the former flavor-drawn articles (split type), the non-combustion heating type flavor-drawn article and the heating device are also collectively referred to as a "non-combustion heating type smoking system". An example of a non-combustion heating type smoking system will be described below with reference to fig. 1 and 2.

Fig. 1 is a schematic cross-sectional view showing an example of a non-combustion heating type smoking system, and shows a state before the heater 12 is inserted into the smoking section 20A of the non-combustion heating type flavor smoking article 20. In use, the heater 12 is inserted into the smoking section 20A. Fig. 2 is a cross-sectional view of a non-combustion heated flavor smoking article 20.

As shown in fig. 1, the non-combustion heating type smoking system includes a non-combustion heating type flavor smoking article 20 and a heating device 10 that heats a smoking section 20A from the inside. The non-combustion heating type smoking system is not limited to the configuration shown in fig. 1.

The heating device 10 shown in fig. 1 includes a body 11 and a heater 12. Although not shown, the body 11 may include a battery unit and a control unit. The heater 12 may be a resistance-based heater that is inserted into the smoking section 20A to heat the smoking section 20A.

In fig. 1, the smoking section 20A is heated from the inside, but the method of the non-combustion heating type flavor smoking article 20 is not limited thereto, and in another method, the smoking section 20A is heated from the outside.

The heating temperature by the heating device 10 is not particularly limited, but is preferably 400 ℃ or lower, more preferably 50 to 400 ℃, and still more preferably 150 to 350 ℃. The heating temperature refers to the temperature of the heater 12 of the heating device 10.

As shown in fig. 2, the non-combustion heating type flavor-absorbing article 20 (hereinafter simply referred to as "flavor-absorbing article 20") has a cylindrical shape. The length of the circumference of the flavor-absorbing article 20 is preferably 16mm to 27mm, more preferably 20mm to 26mm, still more preferably 21mm to 25mm. The total length (length in the horizontal direction) of the flavor-absorbing article 20 is not particularly limited, but is preferably 40 to 90mm, more preferably 50 to 75mm, and still more preferably 50 to 60mm.

The flavor smoking article 20 is composed of a smoking section 20A, a filter portion 20C constituting a mouthpiece, and a connecting portion 20B connecting the two.

The smoking section 20A is cylindrical, and its entire length (axial length) is, for example, preferably 5 to 100mm, more preferably 10 to 50mm, and still more preferably 10 to 25mm. The shape of the cross section of the smoking section 20A is not particularly limited, and may be, for example, circular, elliptical, polygonal, or the like.

The smoking section 20A has a sheet of smoking composition or material 21 from the sheet, and a wrapper 22 wrapped around it.

The filter portion 20C is formed in a cylindrical shape. The filter portion 20C has a rod-shaped 1 st section 25 filled with cellulose acetate fibers and a rod-shaped 2 nd section 26 similarly filled with cellulose acetate fibers. The 1 st section 25 is located on the smoking section 20A side. Section 1 may have a hollow portion 25. The 2 nd section 26 is located on the suction side. The 2 nd section 26 is solid. The 1 st section 25 is composed of a 1 st filler layer (cellulose acetate fiber) 25a and an inner rod packing material 25b wound around the 1 st filler layer 25 a. The 2 nd section 26 is composed of a 2 nd filler layer (cellulose acetate fiber) 26a and an inner rod packing material 26b wound around the 2 nd filler layer 26 a. The 1 st section 25 and the 2 nd section 26 are joined together by an outer rod wrapper 27. The outer rod packing material 27 is bonded to the 1 st and 2 nd sections 25 and 26 by a vinyl acetate emulsion adhesive or the like.

The length of the filter portion 20C may be, for example, 10 to 30mm, the length of the connecting portion 20B may be, for example, 10 to 30mm, the length of the 1 st section 25 may be, for example, 5 to 15mm, and the length of the 2 nd section 26 may be, for example, 5 to 15mm. The length of each of these sections is an example, and may be appropriately changed according to manufacturing suitability, required quality, length of the smoking section 20A, and the like.

For example, the 1 st section 25 (center hole section) is constituted by a 1 st filling layer 25a having one or more hollow portions and an inner rod packing material 25b that covers the 1 st filling layer 25 a. The 1 st section 25 has a function of increasing the strength of the 2 nd section 26. The 1 st filler layer 25a of the 1 st section 25 is filled with cellulose acetate fibers, for example, at a high density. The cellulose acetate fiber is cured by adding, for example, 6 to 20% by weight of a plasticizer containing triacetin to the weight of cellulose acetate. The hollow portion of the 1 st section 25 has an inner diameter of, for example, 1.0 to 5.0mm.

The 1 st filler layer 25a of the 1 st section 25 may be constituted of a relatively high fiber filler density, or may have a fiber filler density equivalent to that of the 2 nd filler layer 26a of the 2 nd section 26 described later. Therefore, at the time of suction, air and aerosol flow only through the hollow portion, and substantially no air and aerosol flow through the 1 st filler layer 25 a. For example, in the case where the 2 nd section 26 is to reduce the reduction of the aerosol component due to the filtration, for example, the length of the 2 nd section 26 may be shortened and the 1 st section 25 may be correspondingly lengthened.

To increase the delivery amount of the aerosol composition, it is effective to replace the shortened 2 nd section 26 with the 1 st section 25. Since the 1 st filler layer 25a of the 1 st section 25 is a fiber filler layer, the feeling from the outside in use does not cause discomfort to the user.

The 2 nd section 26 is composed of a 2 nd filler layer 26a and an inner rod wrapper 26b that encases the 2 nd filler layer 26 a. The 2 nd section 26 (filter section) is filled with cellulose acetate fibers at a usual density and has a usual filtration performance of aerosol components.

The filtration performance for filtering the aerosol (mainstream smoke) released from the smoking section 20A may also be made different between the 1 st section 25 and the 2 nd section 26. A fragrance may be included in at least one of section 1 25 and section 2 26. The filter portion 20C may have any structure including a plurality of segments as described above, or may be formed of a single segment. In addition, the filter portion 20C may be constituted by 1 segment. In this case, the filter portion 20C may be constituted by any of the 1 st or 2 nd sections.

The connecting portion 20B is formed in a cylindrical shape. The connecting portion 20B has a paper tube 23 formed in a cylindrical shape, for example, of thick paper or the like. The joint 20B may be filled with a cooling member for cooling the aerosol. The cooling member may be a sheet of a polymer such as polylactic acid, and the sheet may be filled in a folded form. Further, a support portion that suppresses positional variation of the smoking section 20A may be provided between the smoking section 20A and the connecting portion 20B. The support portion may be made of a known material such as a center hole filter like the 1 st segment 25.

The wrapping material 28 is cylindrically wound around the outside of the smoking section 20A, the connecting portion 20B, and the filter portion 20C, and integrally connects them. A vinyl acetate emulsion adhesive is applied to one surface (inner surface) of the packaging material 28, except the vicinity of the vent hole portion 24, over the entire surface or substantially the entire surface. The plurality of ventilation holes 24 may be formed by integrating the smoking section 20A, the connecting portion 20B, and the filter 20C with the packaging material 28 and then laser processing the same from the outside.

The vent hole 24 has 2 or more through holes so as to penetrate the connecting portion 20B in the thickness direction. When viewed from the extension line of the central axis of the flavor-absorbing article 20, 2 or more through holes are formed in a radial arrangement. In the present embodiment, the vent hole 24 is provided in the connecting portion 20B, but may be provided in the filter portion 20C. In the present embodiment, 2 or more through holes of the vent portion 24 may be arranged in 1 row at regular intervals over 1 ring, 2 rows at regular intervals over 2 rings, and 1 row or 2 rows of through holes may be arranged in a discontinuous or irregular arrangement. When the user grips the mouthpiece to suck, the external atmosphere is introduced into the mainstream smoke via the ventilation hole portion 24. Here, the vent hole portion 24 may not be provided.

The heated type flavor-absorbing article may include a pouch (pouch) containing the flavor-absorbing article material described in item 1 above. The pouch is not limited as long as it can package the filler, is insoluble in water, and is permeable to liquid (water, saliva, etc.) and water-soluble components in the filler, and a known pouch, for example, a nonwoven pouch, can be used. Examples of the material of the pouch include a nonwoven fabric of cellulose, and a commercially available nonwoven fabric can be used. A sheet formed of such a material may be formed into a pouch shape, filled with a filler, and sealed by heat sealing or the like, to thereby produce a pouch product.

The basis weight of the sheet is not particularly limited, and may be usually 12gsm to 54gsm, preferably 24gsm to 30 gsm. The thickness of the sheet is not particularly limited, but is usually 100 μm or more and 300 μm or less, preferably 175 μm or more and 215 μm or less.

The pouch may be partially coated on at least one of its inner and outer surfaces with a water repellent material. As the water-repellent material, a water-repellent fluorine-based resin is preferable. Specifically, as such a water repellent fluorine-based resin, asahiGuard (registered trademark) manufactured by asahi guard corporation may be mentioned. The water repellent fluororesin is coated on a packaging material for foods and products containing fats and oils, such as snack foods, dairy products, vegetables, snack foods, and pet foods. Therefore, such water repellent fluorine-based resin is safe even when applied to a pouch placed in the oral cavity. The water repellent material is not limited to the fluorine resin, and may be, for example, a material having a water repellent effect such as a paraffin resin, a silicone resin, or an epoxy resin.

As described above, the non-combustion heating type flavor aspirator may include: a tobacco-containing section filled with tobacco sheets or the like, a cooling section, and a filter section. The flavor aspirator is the same meaning as the flavor aspirated article, and the two can be used interchangeably. The axial length of the tobacco-containing section of the non-combustion heated flavor aspirator is typically shorter than the axial length of the tobacco-containing section of the combustion flavor aspirator due to its relationship to the heating heater. Therefore, in the non-combustion heating type flavor aspirator, a large number of tobacco sheets are filled in a short section containing tobacco segments in order to ensure the aerosol generation amount during heating. In order to fill a large number of tobacco sheets in a short section, a non-combustion heating type flavor aspirator generally uses a tobacco sheet having low bulk, i.e., a high density. The fluffiness is a value indicating the volume of a filament of a tobacco sheet of a given weight compressed for a certain time under a certain pressure.

However, the present inventors have found that when a tobacco sheet having low bulk (high density) is used in consideration of the heating system, the heating capacity of the heater, and the generation of aerosol, the total heat capacity of the tobacco-containing segment increases, and therefore, depending on the heating method and the capacity of the heater, the tobacco sheet filled in the tobacco-containing segment may not sufficiently exert the aerosol generating action. In order to solve this problem, it is considered to reduce the total heat capacity of the tobacco-containing segment.

In order to reduce the total heat capacity of the tobacco-containing segment, the present inventors studied (1) reducing the specific heat of the tobacco raw material contained in the tobacco sheet and (2) using a tobacco sheet having high bulk (low density). However, it is difficult to reduce the specific heat of the tobacco material itself for (1), so it is considered that it is effective to reduce the total heat capacity of the tobacco-containing section by (2). Therefore, as a preferred embodiment 1, a description will be given of a mode in which the material for flavor-absorbing articles is a tobacco sheet having high bulk (low density) which can be suitably used for a non-combustion heating type flavor aspirator.

[ Embodiment 1]

[ Tobacco sheet for non-Combustion heating type flavor aspirator ]

The tobacco sheet for a non-combustion heating type flavor inhaler (hereinafter also referred to as "tobacco sheet") according to the present embodiment contains a fibrous raw material. The tobacco sheet of the present embodiment contains a fibrous raw material, and therefore has a large volume and high bulk. Therefore, by using the tobacco sheet according to the present embodiment, the total heat capacity of the tobacco-containing segment can be reduced, and the tobacco sheet filled in the tobacco-containing segment can be made sufficiently conducive to aerosol generation. The tobacco sheet of the present embodiment preferably further comprises a tobacco raw material, an aerosol-generating substrate, and a molding agent, and the bulk of the tobacco sheet is further improved by setting the blending ratio thereof to a predetermined range.

(Fibrous Material)

The fibrous material included in the tobacco sheet of the present embodiment is not particularly limited as long as the fibrous material has a fibrous shape such as fibers. As the fibrous material, for example, there may be mentioned: fibrous pulp, fibrous tobacco material, fibrous synthetic cellulose, and the like. One kind of them may be used, or two or more kinds may be used in combination. Among them, fibrous pulp is preferable as the fibrous material from the viewpoint of fiber rigidity.

The proportion of fibrous material contained in 100% by weight of the tobacco sheet is preferably 5 to 50% by weight. By setting the proportion of the fibrous material to 5% by weight or more, a volume size capable of securing a function can be achieved. Further, by setting the proportion of the fibrous material to 50% by weight or less, a sufficient tobacco flavor and aerosol can be produced when heated. The proportion of the fibrous material is more preferably 5 to 47% by weight, still more preferably 5 to 45% by weight, particularly preferably 5 to 40% by weight.

(Tobacco raw material)

In the case where the fibrous material is other than the fibrous tobacco material, the tobacco sheet of the present embodiment may further contain a tobacco raw material. The tobacco raw material may or may not be the cellulose-based base material described above. Examples of the tobacco raw material contained in the tobacco component include tobacco powder and tobacco extract. Examples of the tobacco powder include tobacco leaves, veins, and residual stems. One kind of these may be used, or two or more kinds may be used in combination. They can be used as tobacco powder by cutting them into given sizes. From the viewpoint of further improving the bulk, the size of the tobacco powder is preferably 200 μm or more in terms of the cumulative 90% particle diameter (D90) in the volume-based particle size distribution measured by the dry laser diffraction method. As the tobacco extract, for example, there is mentioned a tobacco extract obtained by coarsely pulverizing tobacco leaves, mixing and stirring the tobacco leaves with a solvent such as water, extracting water-soluble components from the tobacco leaves, drying the obtained water extract under reduced pressure, and concentrating the dried water extract.

The proportion of the tobacco raw material contained in 100% by weight of the tobacco sheet is preferably 30 to 91% by weight. By setting the proportion of the tobacco material to 30 wt% or more, tobacco aroma can be sufficiently generated upon heating. Further, by setting the ratio of the tobacco raw material to 91% by weight or less, a sufficient amount of the aerosol-generating substrate and the molding agent can be contained. The proportion of the tobacco material is more preferably 50 to 90% by weight, still more preferably 55 to 85% by weight, particularly preferably 60 to 80% by weight.

(Nicotine)

As nicotine, the above substances can be used. In the present embodiment, as the nicotine, a tobacco extract containing nicotine may be used. Examples of the tobacco extract include tobacco extracts obtained by coarsely pulverizing tobacco leaves, mixing the tobacco leaves with a solvent such as water, stirring the mixture to extract water-soluble components from the tobacco leaves, and drying and concentrating the obtained water extract under reduced pressure.

(Molding agent)

In the case where the fibrous material is other than the fibrous molding agent such as fibrous synthetic cellulose, it is preferable that the tobacco sheet of the present embodiment further contains the molding agent from the viewpoint of securing the shape. The molding agent is one of the above binders. Examples of the molding agent include polysaccharides, proteins, and synthetic polymers. One kind of these may be used, or two or more kinds may be used in combination. Examples of the polysaccharide include cellulose derivatives and polysaccharides derived from natural sources.

Examples of the cellulose derivative include: cellulose ethers such as methyl cellulose, ethyl cellulose, hydroxyethyl cellulose, hydroxymethyl ethyl cellulose, hydroxypropyl methyl cellulose, benzyl cellulose, trityl cellulose, cyanoethyl cellulose, carboxymethyl cellulose, carboxyethyl cellulose, and aminoethyl cellulose; organic acid esters such as cellulose acetate, cellulose formate, cellulose propionate, cellulose butyrate, cellulose benzoate, cellulose phthalate, and tosyl cellulose; inorganic acid esters such as nitrocellulose, cellulose sulfate, cellulose phosphate, and cellulose xanthate.

Examples of the polysaccharide of natural origin include: guar gum, tara gum, locust bean gum, tamarind gum, pectin, gum arabic, gum tragacanth, karaya gum, gum ghatti (ghatti gum), arabinogalactan, flaxseed gum, cassia gum, psyllium seed gum, and sand sagebrush seed gum; polysaccharide derived from algae such as carrageenan, agar, alginic acid, propylene glycol alginate, red algae gelatin, and extract of vesicular algae; polysaccharides derived from microorganisms such as xanthan gum, gellan gum, curdlan, pullulan, agrobacterium succinoglycan (agrobacterium succinoglycan), welan gum, macrophomopsis gum, and neutral gum (rhamsan gum); polysaccharides derived from crustaceans such as chitin, chitosan, and glucosamine; starch, sodium starch glycolate, alpha starch, dextrin, and other starches.

Examples of the protein include: cereal proteins such as wheat gluten and rye gluten. Examples of the synthetic polymer include: polyphosphoric acid, sodium polyacrylate, polyvinylpyrrolidone, and the like.

When the molding agent is contained in the tobacco sheet, the proportion of the molding agent contained in 100% by weight of the tobacco sheet is preferably 0.1 to 15% by weight. By setting the proportion of the molding agent to 0.1 wt% or more, the raw material mixture can be easily molded into a sheet shape. Further, by setting the proportion of the molding agent to 15% by weight or less, other raw materials for securing the functions required for the tobacco-containing section of the non-combustion heating type flavor aspirator can be fully utilized. The proportion of the molding agent is more preferably 0.2 to 13% by weight, still more preferably 0.5 to 12% by weight, particularly preferably 1 to 10% by weight.

(Aerosol-generating substrate)

From the viewpoint of increasing the amount of smoke during heating, the tobacco sheet of the present embodiment preferably further comprises an aerosol-generating substrate. Examples of the aerosol-generating substrate include: glycerol, propylene glycol, 1, 3-butanediol, and the like. One kind of these may be used, or two or more kinds may be used in combination.

When the aerosol-generating substrate is contained in the tobacco sheet, the proportion of the aerosol-generating substrate contained in 100% by weight of the tobacco sheet is preferably 5 to 50% by weight. By setting the proportion of the aerosol-generating substrate to 5 wt% or more, sufficient aerosol can be generated upon heating from the viewpoint of the amount. In addition, by setting the proportion of the aerosol-generating substrate to 50 wt% or less, sufficient aerosol can be generated at the time of heating from the viewpoint of heat capacity. The proportion of the aerosol-generating substrate is more preferably 6 to 45% by weight, still more preferably 8 to 40% by weight, particularly preferably 10 to 30% by weight.

(Reinforcing agent)

In the case where the fibrous material is other than the fibrous reinforcing agent such as fibrous pulp, the tobacco sheet of the present embodiment may further contain the reinforcing agent from the viewpoint of further improving the physical properties. Examples of the reinforcing agent include a liquid substance having a surface coating function, such as pulp or pectin suspension, which forms a film when dried. One kind of these may be used, or two or more kinds may be used in combination.

When the reinforcing agent is contained in the tobacco sheet, the proportion of the reinforcing agent contained in 100% by weight of the tobacco sheet is preferably 0.1 to 20% by weight. In the case where the ratio of the reinforcing agent is within the present range, other raw materials for securing the function required for the tobacco-containing section of the non-combustion heating type flavor aspirator can be fully utilized. The proportion of the reinforcing agent is more preferably 0.2 to 18% by weight, still more preferably 0.5 to 15% by weight.

(Moisturizer)

From the viewpoint of maintaining quality, the tobacco sheet of the present embodiment may further contain a humectant. Examples of the humectant include: sugar alcohols such as sorbitol, erythritol, xylitol, maltitol, lactitol, mannitol, and reduced maltose syrup. One kind of these may be used, or two or more kinds may be used in combination.

When the humectant is contained in the tobacco sheet, the proportion of the humectant contained in 100% by weight of the tobacco sheet is preferably 1 to 15% by weight. In this range, other materials for ensuring the function required for the tobacco-containing section of the non-combustion heating type flavor aspirator can be fully utilized. The proportion of the humectant is more preferably 2 to 12% by weight, still more preferably 3 to 10% by weight.

(Other Components)

The tobacco sheet of the present embodiment may contain, in addition to the fibrous material, the tobacco powder, the molding agent, the aerosol-generating substrate, the reinforcing agent, and the humectant, flavoring agents such as flavors and flavoring agents, colorants, humectants, preservatives, and diluents such as inorganic substances, as necessary.

(Fluffiness)

The tobacco sheet of the present embodiment preferably has a bulk of 190cc/100g or more. By setting the bulk to 190cc/100g or more, the total heat capacity of the tobacco-containing segment of the non-combustion heating type flavor aspirator can be sufficiently reduced, and the tobacco sheet filled in the tobacco-containing segment can contribute more to aerosol generation. The bulk is more preferably 210cc/100g or more, and still more preferably 230cc/100g or more. The upper limit of the range of the fluffiness is not particularly limited, and may be, for example, 800cc/100g or less. The fluffiness was measured by cutting tobacco pieces to a size of 0.8mm×9.5mm, storing the cut tobacco pieces in a 60% room at 22℃for 48 hours, and measuring the cut tobacco pieces with DD-60A (trade name, manufactured by Borgward Co.). The measurement was performed by placing 15g of the cut tobacco sheet into a cylindrical container having an inner diameter of 60mm and obtaining a volume when compressed for 30 seconds under a load of 3 kg.

(Constitution of tobacco sheet)

In the present embodiment, the "tobacco sheet" is formed by molding the components constituting the tobacco sheet into a sheet shape. Here, "sheet" means a shape having 1 pair of main surfaces and side surfaces which are substantially parallel. The length and width of the tobacco sheet are not particularly limited and may be appropriately adjusted according to the manner of filling. The thickness of the tobacco sheet is not particularly limited, but is preferably 100 to 1000 μm, more preferably 150 to 600 μm, in view of both heat transfer efficiency and strength.

(Method for producing tobacco sheet)

The tobacco sheet according to the present embodiment can be produced by a known method such as a rolling method or a casting method. Details of various tobacco sheets produced by such a method are disclosed in "tobacco dictionary, tobacco comprehensive research center, 2009.3.31".

< Calendering method >)

As a method for producing a tobacco sheet by rolling, for example, a method including the following steps is given.

(1) And a step of mixing water, tobacco powder as a cellulose base material, an aerosol-generating base material, a molding agent, and fibrous pulp to obtain a mixture.

(2) And a step of throwing the mixture into a calender roll to calender.

(3) And a step of peeling the rolled product from the calender roll with a doctor blade, transferring the peeled product to a web conveyor, and drying the product with a dryer.

In the case of producing a tobacco sheet by this method, the surfaces of the respective calender rolls may be heated or cooled according to the purpose, or the rotational speeds of the respective calender rolls may be adjusted. Further, by adjusting the interval between the calender rolls, a tobacco sheet having a desired weight per unit area can be obtained.

A step of supplying the nicotine from outside the cellulose-based substrate to at least partially impart the nicotine to the surface of the cellulose-based substrate may be provided between the steps (1) and (2), (2) and (3), or after the step (3).

< Casting method >)

As a method for producing a tobacco sheet by casting, for example, a method including the following steps can be cited.

(2) And a step of forming a tobacco sheet by thinly stretching (casting) the mixture and drying the stretched mixture.

In the case of producing a tobacco sheet by this method, a step of removing a part of components such as nitrosamine by ultraviolet irradiation or X-ray irradiation of a slurry obtained by mixing water, tobacco powder, aerosol-generating substrate, molding agent and fibrous pulp may be added.

A step of supplying the nicotine from outside the cellulose-based substrate to at least partially impart the nicotine to the surface of the cellulose-based substrate may be provided between the steps (1) and (2) or after the step (2).

Examples

The present invention is experimentally described by the following examples, but the following description is not to be construed as limiting the scope of the present invention to the following examples.

(Preparation of tobacco particles)

The tobacco shreds of burley tobacco seeds heated at 120 ℃ and washed with water 4 times and having a nicotine concentration of 0.01% are pulverized by a mill and then sieved with a sieve having a mesh size of 50 μm to obtain a fine tobacco powder having a size of less than 50 μm. The tobacco fine powder thus obtained was subjected to: 1000g, CMC (carboxymethyl cellulose): 50g, glycerin: 100g of the mixture was mixed, and 300g of water was added to the obtained mixture to knead the mixture. The obtained kneaded material was fed into a wet extrusion granulator (TDG-80A-1, manufactured by Dalton Co., ltd.) under pressure: 250kN, temperature: after being granulated into a columnar shape at 80 ℃, the granules were formed into spheres to obtain tobacco particles (spheres) (particle diameter 250 to 500 μm, average particle diameter (D50) 352 μm).

In addition, except that the granulation conditions of the wet extrusion granulator were changed to pressure: 200kN, temperature: except for 75 ℃, tobacco particles (spherical) (particle diameter 500 to 850 μm, average particle diameter (D50) 643 μm) were obtained in the same manner as described above.

The particle diameters of the above particles were dried at 100℃for 2 hours, and then measured by a laser diffraction method under dry conditions using a scattering particle diameter distribution measuring apparatus (Partica, manufactured by Yamato Scientific).

Then, for each tobacco particle thus obtained as described above: 50g of nicotine ((-) -nicotine, fuji film and Wako pure chemical industries, ltd.) was sprayed from the outside under a pressure of 0.1MPa using a spraying device (glass atomizer, AS ONE Co., ltd.): 1g of a solution obtained by dissolving 10g of water in water, and mixing menthol (l-menthol, fuji photo-alignment film and Wako pure chemical industries, ltd.): 10g of the mixture was dissolved in 10g of Propylene Glycol (PG) in a state heated to 50℃or higher. Thus, tobacco particles were obtained in which nicotine and menthol were attached to the surfaces of the tobacco particles in an average amount of 2.179mg and menthol of 6.190mg per 100mg (the nicotine content and menthol content were 2.179 wt% and 6.190 wt%, respectively, the particle diameter was 250 to 500 μm, and the average particle diameter (D50) was 352 μm) (hereinafter referred to as "tobacco particle A"), and tobacco particles in which nicotine and menthol were attached to the surfaces of the tobacco particles in an average amount of 2.125mg and menthol were attached to the surfaces of the tobacco particles in an average amount of 6.584mg per 100mg (the nicotine content and menthol content were 2.125 wt% and 6.584 wt%, respectively, the particle diameter was 500 to 850 μm, and the average particle diameter (D50) 643 μm) (hereinafter referred to as "tobacco particle B"), respectively).

Based on the formula (1) described in the above item "1. Flavor-absorbing article material", the average surface area of each of the tobacco particles A and B was calculated to be 0.196 to 0.785mm ² (average value 0.442mm ²) and 0.785 to 2.270mm ² (average value 1.431mm ²), respectively.

(Analysis of nicotine and menthol released from tobacco particles)

An empty bottomless cylinder (material: paper, inner diameter: about 6.8 mm) was filled with 100mg, 200mg or 300mg of the obtained tobacco particles A or B, and then acetate filters (manufactured by Nihon Filter Co., ltd.) were disposed at both ends of the cylinder, and the tobacco particles were sealed. A glass fiber filter (trade name: cambridgeFilter mm, manufactured by Borgwaldt Co., ltd.) and a smoker (individual smoker, manufactured by Borgwaldt Co.) were arranged in this order from the cylinder side adjacent to one acetate filter arranged in the cylinder. The cylindrical body containing the tobacco particles is heated from the outside by a heater (set temperature: 55 ℃ C. Or 70 ℃ C.) to generate vapor and aerosol, and the generated vapor and aerosol are drawn by a smoker. The suction was performed 10 times in total based on the CIR method (canadian forced smoking condition method) by setting to 55ml/2 seconds per 1 suction (1 suction interval of 30 seconds, i.e., waiting for 28 seconds after 2 seconds of suction). Then, the amounts of nicotine and menthol trapped through the glass fiber filter were quantified after 10 puffs, to thereby obtain a value of the trapped amount (inhaled amount) of nicotine or menthol per 10 puffs on average. The collected components were extracted by shaking with 10ml of isopropyl alcohol (IPA) as an extraction solvent for 20 minutes at 200rpm, and the obtained extract was analyzed by GC under the following conditions, whereby the quantification was performed.

< GC analysis Condition >)

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 for 5 minutes

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

A detector: FID (FID)

Further, the weight difference between before and after smoking of the glass fiber filter was calculated by subtracting the weight of the glass fiber filter before smoking from the weight of the glass fiber filter after smoking, and the weight difference was used as the amount of total particulate matter (TPM: total particulate matter) contained in the vapor and aerosol drawn by the smoker.

Further, the ratio of the trapping amount per 10-time average of the suction to the filling amount of nicotine or menthol (trapping amount per 10-time average of the suction/filling amount×100) was calculated for nicotine and menthol, respectively (hereinafter referred to as "release efficiency per 10-time average of the suction").

The results obtained are shown in table 1 and fig. 3 and 4.

The materials for flavor-absorbing articles of examples 1 to 12 were obtained by mixing a cellulose base material with nicotine.

As is clear from the results of table 1 and fig. 3 and 4, even when the heating temperature is 70 ℃ or lower than the conventional 200 ℃ or higher, the nicotine release efficiency per 10 puffs is 1.8% or higher, and nicotine is easily released in the materials for flavor-absorbing articles of examples 1 to 12. It was found that even when the heating temperature was set to a low temperature of 70 ℃ in the materials for flavor-absorbing articles of examples 1 to 12, the menthol release efficiency per 10 puffs on average reached 7% or more, and menthol was easily released.

In the materials for flavor-absorbing articles of examples 1 to 12, even when the heating temperature was further lowered from 70℃to an extremely low temperature of 55℃and the release efficiency of nicotine per 10 puffs was 0.6% or more on average, nicotine was still easily released. It is also found that, even when the heating temperature is set to an extremely low temperature of 55 ℃ in the materials for flavor-absorbing articles of examples 1 to 12, the menthol release efficiency per 10 puffs on average is 4% or more, and menthol is still easily released.

Since the materials for flavor-absorbing articles of examples 1 to 12 were formed by supplying nicotine and menthol from the outside of tobacco particles, it was considered that nicotine and menthol were attached to the surface of the materials for flavor-absorbing articles and the inside of pores formed in the surface. It is considered that nicotine and menthol adhering to the surface of the material for flavor-absorbing articles and the inside of the pores are present in the portions close to the outer surface, compared with nicotine and the like present in the interior due to the original components of the material for flavor-absorbing articles, and thus are more easily released. Therefore, even when the heating temperature is low, nicotine and menthol can be sufficiently released to the outside, and the release efficiency is considered to be high.

Further, as is clear from the results of table 1 and fig. 3 and 4, even at the same heating temperature, tobacco particles a having a smaller particle diameter tend to increase the release efficiency of nicotine per 10 puffs on average, as compared with tobacco particles B having a larger particle diameter. In this regard, it is considered that when the filling amount of the tobacco particles is the same, the total surface area of all the tobacco particles increases as the particle diameter of the tobacco particles decreases. It is considered that by increasing the surface area in this way, the amount of nicotine released by the presence of the surface of the tobacco particles increases, and thus the release efficiency of nicotine increases.

Further, it is known that the lower the filling amount of nicotine is, the higher the release efficiency of nicotine per 10 puffs on average tends to be. In this regard, it is considered that, when the particle diameters of the tobacco particles are the same, the layer of nicotine adhering to the surface of the tobacco particles becomes thinner as the filling amount of nicotine decreases. It is considered that if the layer thickness of nicotine is such that nicotine located below the layer is difficult to release. On the other hand, if the layer of nicotine is thin, nicotine is easily released from the whole layer, and thus the release efficiency of nicotine is considered to be improved.

These trends observed with respect to nicotine can also be similarly observed in terms of menthol release efficiency. These tendencies in menthol release efficiency are also believed to be due to the same reasons as nicotine.

As described above, the material for a flavor-absorbing article according to the present application can be used at a low heating temperature.

Hereinafter, embodiment 1 will be described with reference to examples.

Reference example 1

Tobacco flakes (tobacco leaves) were dry-pulverized with Hosokawa Micron ACM machine to obtain tobacco powder. The cumulative 90% particle diameter (D90) in the volume-based particle size distribution measured by the dry laser diffraction method was measured using a Mastersizer (trade name, manufactured by spectra company MALVERN PANALYTICAL, inc.), and found to be 200 μm.

Using the above tobacco powder as a tobacco raw material, a tobacco sheet was produced by a rolling method. Specifically, 77 parts by weight of the tobacco raw material, 12 parts by weight of glycerin as an aerosol generating agent, 1 part by weight of carboxymethyl cellulose as a molding agent, and 10 parts by weight of fibrous pulp (Canfor dry defibration product of pulp) as a fibrous material were mixed and kneaded by an extrusion molding machine. The kneaded material was formed into a sheet by using 2 pairs of metal rolls, and dried in a heated air circulation oven at 80 ℃. The tobacco sheet was cut into dimensions of 0.8mm by 9.5mm using a chopper.

For cut tobacco sheets, the fluffiness was measured. Specifically, the cut tobacco sheet was left in a 60% room at 22℃for 48 hours, and then measured for fluffiness using DD-60A (trade name, manufactured by Borgward Co.). The cut tobacco sheet 15g was placed in a cylindrical container having an inner diameter of 60mm, and the volume at 30 seconds of compression was determined under a load of 3kg, and the measurement was performed. The results are shown in Table 2. In table 2, the bulk is expressed as a rate of increase (%) of the bulk with respect to a reference value based on the value of the bulk of comparative example 1 described later.

Reference comparative example 1

Tobacco powder was prepared in the same manner as in reference example 1. Using the tobacco powder as a tobacco raw material, a tobacco sheet was produced by a rolling method. Specifically, 87 parts by weight of the tobacco material, 12 parts by weight of glycerin as an aerosol-generating substrate, and 1 part by weight of carboxymethyl cellulose as a molding agent were mixed and kneaded by an extrusion molding machine. The kneaded material was formed into a sheet by 2 pairs of metal rolls, and dried by a hot air circulation oven at 80 ℃. The tobacco sheet was cut into dimensions of 0.8mm by 9.5mm using a chopper. The cut tobacco sheet was measured for fluffiness in the same manner as in reference example 1. The results are shown in Table 2.

TABLE 2

	Bulk increase (%)
		Reference example 1	33
Reference comparative example 1	-

According to the table, the tobacco sheet of reference example 1, which is the tobacco sheet of the present embodiment, has improved bulk as compared with the tobacco sheet of reference example 1 containing no fibrous material. Although the tobacco sheet was produced by the rolling method in reference example 1, the bulk was also improved when the tobacco sheet was produced by the casting method in the same manner.

Hereinafter, embodiments are shown.

[1] A material for flavor smoking articles is prepared by mixing a cellulosic base material with nicotine.

[2] The material for flavor-absorbing articles according to [1], wherein the nicotine is a component supplied from outside the cellulose-based substrate, and at least a part of the nicotine is present on the surface of the cellulose-based substrate.

[3] The material for flavor smoking article according to [1] or [2], wherein the nicotine is selected from the group consisting of synthetic nicotine, separated nicotine, and a combination thereof.

[4] The material for flavor-absorbing articles according to any one of [1] to [3], wherein the content of nicotine relative to the entire material for flavor-absorbing articles is 2% by weight or more.

[5] The material for flavor-absorbing articles according to any one of [1] to [4], further comprising menthol.

[6] The material for flavor-absorbing articles according to [5], wherein the menthol is contained in an amount of 6% by weight or more based on the entire material for flavor-absorbing articles.

[7] The material for flavor-absorbing articles according to any one of [1] to [6], which is in the form of particles or flakes.

[8] The material for flavor-absorbing articles according to [7], which is in the form of particles having a particle diameter of 250 μm or more.

[9] The material for flavor-absorbing articles according to [7] or [8], which is in the form of particles having an average surface area of 0.1 to 2.5mm ² per 1 of the particles.

[10] The material for flavor-absorbing articles according to any one of [1] to [9], wherein the release efficiency of nicotine per 10-times-absorption at the time of heat-absorbing at 55℃is 0.6% or more.

[11] The material for flavor-absorbing articles according to [5] or [6], wherein the menthol release efficiency per 10-time-absorption at 55℃is 4% or more.

[12] The material for flavor-absorbing articles according to any one of [1] to [11], wherein the release efficiency of nicotine per 10-times-absorption at the time of heat-absorbing at 70 ℃ is 1.8% or more.

[13] The material for flavor-absorbing articles according to [5], [6] or [11], wherein the menthol release efficiency per 10-time-absorption at 70 ℃ is 7% or more.

[14] A heated type flavor-absorbing article comprising the material for a flavor-absorbing article according to any one of [1] to [13 ].

[15] The heated type flavor-absorbing article according to item [14], further comprising a pouch containing the above-mentioned material for the flavor-absorbing article.

[16] The heated type flavor pumping article according to item [15], wherein the pouch is a nonwoven pouch.

[17] The method for producing a material for flavor-absorbing articles according to any one of [1] to [13], comprising:

preparing the cellulose base material and the nicotine; and

(1) A tobacco sheet for a non-combustion heated flavor inhaler comprising a fibrous material.

(2) The non-combustion heating type flavor-absorbing tobacco sheet according to (1), wherein the fibrous material is contained in an amount of 5 to 50% by weight in 100% by weight of the tobacco sheet.

(3) The non-combustion heating type flavor-absorbing tobacco sheet according to (1) or (2), wherein the fibrous material is at least one selected from the group consisting of fibrous pulp, fibrous tobacco material and fibrous synthetic cellulose.

(4) The non-combustion heating type flavor-extractor tobacco sheet according to (3), wherein the fibrous material is fibrous pulp.

(5) The non-combustion heating type flavor-absorbing tobacco sheet according to (4), wherein the tobacco sheet further comprises a tobacco raw material.

(6) The non-combustion heating type flavor-absorbing tobacco sheet according to (5), wherein the tobacco material is at least one tobacco powder selected from the group consisting of tobacco leaves, veins and residual stems.

(7) The non-combustion heating type flavor-absorbing tobacco sheet according to (5) or (6), wherein the proportion of the tobacco raw material contained in 100% by weight of the tobacco sheet is 30 to 91% by weight.

(8) The non-combustion heating type flavor inhaler tobacco sheet according to any one of (4) to (7), wherein the tobacco sheet further comprises a molding agent.

(9) The tobacco sheet for a non-combustion heating type flavor inhaler according to (8), wherein the molding agent is at least one selected from the group consisting of polysaccharides, proteins and synthetic polymers.

(10) The non-combustion heating type flavor-absorbing tobacco sheet according to (8) or (9), wherein the proportion of the molding agent contained in 100% by weight of the tobacco sheet is 0.1 to 15% by weight.

(11) The non-combustion heating type flavor-smoking tobacco sheet according to any one of (1) to (10), wherein the tobacco sheet further comprises an aerosol-generating substrate.

(12) The non-combustion heating type flavor-absorbing tobacco sheet according to (11), wherein the aerosol-generating substrate is at least one selected from the group consisting of glycerin, propylene glycol and 1, 3-butanediol.

(13) The non-combustion heating type flavor-absorbing tobacco sheet according to (11) or (12), wherein the proportion of the aerosol-generating substrate contained in 100% by weight of the tobacco sheet is 5 to 50% by weight.

(14) A non-combustion heating type flavor aspirator comprising a tobacco-containing segment comprising the non-combustion heating type flavor aspirator tobacco sheet according to any one of (1) to (13).

(15) A non-combustion heated flavor pumping system, comprising:

(14) The non-combustion heating type flavor aspirator and

And a heating device for heating the tobacco-containing section.

Claims

1. A material for flavor smoking articles is prepared by mixing a cellulosic substrate with nicotine.

2. The material for a flavor-absorbing article according to claim 1, further comprising a fibrous material, the material for a flavor-absorbing article being a tobacco sheet for a non-combustion heating type flavor-absorbing article.

3. The material for a flavor-absorbing article according to claim 2, wherein,

The fibrous material is contained in an amount of 5 to 50% by weight based on 100% by weight of the material for flavor-absorbing articles.

4. A non-combustion heated flavor-smoking article comprising a tobacco-containing segment comprising the flavor-smoking article material of any one of claims 1-3.

5. A non-combustion heated flavor pumping system, comprising:

The non-combustion heated flavor pumping article of claim 4, and

Heating means for heating said tobacco-containing segment.