WO2024127455A1

WO2024127455A1 - Non-combustion heating-type smoking article and non-combustion heating-type smoking system

Info

Publication number: WO2024127455A1
Application number: PCT/JP2022/045648
Authority: WO
Inventors: 佳代子今飯田; 優樹松谷
Original assignee: 日本たばこ産業株式会社
Priority date: 2022-12-12
Filing date: 2022-12-12
Publication date: 2024-06-20

Abstract

The present invention addresses the problem of providing a novel non-combustion heating-type smoking article that does not make use of a filter segment or the like, unlike conventional smoking articles.　Provided is a non-combustion heating-type smoking article that includes a tobacco-containing segment but does not include a cooling segment or a filter segment.

Description

Non-combustion heating smoking article and non-combustion heating smoking system

The present invention relates to a non-combustion heat smoking article and a non-combustion heat smoking system.

Imitation tobacco is a tobacco material made by artificially forming tobacco leaves into a paper-like form, and is also called tobacco sheet. Known methods for manufacturing such tobacco sheets include, for example, a papermaking process, a slurry (cast) process, a rolling process, and an extrusion molding process.

It is believed that heating, rather than burning, tobacco materials results in fewer harmful compounds than would normally be produced during smoking, and there is a high demand for tobacco sheets for use in heat-not-burn tobacco products. The tobacco sheets can be produced by combining tobacco raw materials with an aerosol former, a binder, and the like, and then using the above-mentioned process. The tobacco sheets produced in this manner can be shredded to a predetermined size, and wrapped in cigarette paper with the resulting tobacco shreds facing inward to form a cylindrical tobacco rod (Patent Document 1). Alternatively, the tobacco sheet can be gathered and then formed into a cylindrical tobacco rod without being shredded (Patent Documents 2 to 4).
Furthermore, as disclosed in Patent Document 5, a tobacco material in which sheets of different sizes are packed in layers is also known.

International Publication No. 2017/081144 Patent No. 6403666 Patent No. 6580485 Patent No. 6668318 US Patent Application Publication No. 2021/0015148

　In conventional non-combustion heat smoking articles such as those shown in Patent Documents 1 to 5, a filter (filter segment) is generally provided in addition to the tobacco-containing segment such as the tobacco rod. This is because in conventional non-combustion heat smoking articles, the filter plays the role of a mouthpiece. As such a filter, acetate filters are often used. Here, acetate filters are made of acetate fibers, and an esterified raw material is used to form acetyl groups in the acetate fibers. The esterified raw material is a petroleum-derived raw material made by chemical synthesis from petroleum, and the use of such petroleum-derived raw materials can cause an increase in the burden on the environment. In addition, when manufacturing acetate fibers, acetyl cellulose is dissolved in acetone, the resulting solution is sprayed through a fine hole to spin, and then the fiber is formed by drying with hot air. Some of the solvents and additives such as plasticizers that dissolve acetyl cellulose contain substances that are harmful to the human body, and the use of these substances can also cause an increase in the burden on the environment. As such, acetate filters and other filters are components that can increase the burden on the environment through the use of the above-mentioned raw materials and substances, and from the perspective of reducing the burden on the environment, it is desirable to reduce the amount of such filters used, and it is even more desirable not to use such filters at all.

In addition, when a filter is used, a process is required to assemble the filter into the tobacco-containing segment, which increases manufacturing costs by the amount of this process required.

In light of these circumstances, the inventors of the present application conducted intensive research and discovered that the use of a non-combustion heat smoking article that does not include a filter segment, but does include a tobacco-containing segment, offers a variety of advantages, including reduced environmental impact, elimination of the need for a process for assembling filter segments into tobacco-containing segments, and the ability to make packaging more compact. The objective of the present invention is to provide a novel non-combustion heat smoking article that, unlike conventional products, does not use filter segments, etc.

As a result of intensive research into solving the above problems, the inventors discovered that the above problems could be solved by forming a non-combustion heat smoking article in a form that includes a tobacco-containing segment and does not include a cooling segment or a filter segment, and thus completed the present invention. Specific aspects of the present invention are as follows.

[1] A non-combustion heated smoking article comprising a tobacco-containing segment and no cooling segment or filter segment.
[2] A non-combustion heat smoking article as described in [1], wherein the tobacco-containing segment includes a tobacco filler and the tobacco filler includes a sheet in a rolled state.
[3] The non-combustion heating smoking article described in [2], wherein the sheet before being rolled has a first surface and a second surface, and in the rolled state of the sheet, the first surface faces outward and the second surface faces inward, and the area of the first surface is 100 to ²⁰⁰⁰ mm2.
[4] A non-combustion heating smoking article according to [2] or [3], wherein the number of turns of the sheet in the rolled state is 1 to 3.5 turns.
[5] The non-combustion heat smoking article according to any one of [2] to [4], wherein the sheet contains an aerosol former.
[6] The non-combustion heating smoking article described in [5], wherein the aerosol former contains a polyol.
[7] The non-combustion heating smoking article described in [5] or [6], wherein the content of the aerosol former in the sheet is 10 to 80% by weight.
[8] The non-combustion heat smoking article according to any one of [2] to [7], wherein the sheet contains fibers derived from plant materials.
[9] The non-combustion heat smoking article described in [8], wherein the plant material contains tobacco material.
[10] The non-combustion heat smoking article according to any one of [2] to [9], wherein the sheet is a cast sheet or a rolled sheet.
[11] A non-combustion heat smoking system comprising the non-combustion heat smoking article according to any one of [1] to [10].

Unlike conventional products, the non-combustion heat smoking article of the present invention is a novel non-combustion heat smoking article that does not use filter segments, etc., and offers various advantages, such as reduced environmental impact, no need for the process of assembling filter segments into tobacco-containing segments, and the ability to make packaging more compact.

FIG. 1 is a schematic diagram showing an example of a sheet in a rolled state. FIG. 2 is a schematic diagram showing an example of a tobacco-containing segment. FIG. 3 is a perspective view of an electrically heated tobacco product. FIG. 4 is a cross-sectional view taken along line III-III in FIG. FIG. 5 is a cross-sectional view of a portion of the mouthpiece 30 and the cartridge 20.

The non-combustion heat smoking article and non-combustion heat smoking system of the present application are described below.

1. Non-combustion heated smoking article The non-combustion heated smoking article of the present invention comprises a tobacco-containing segment, but does not comprise a cooling segment or a filter segment.
As described above, the non-combustion heat smoking article of the present invention does not use filter segments, etc., which provides various advantages, such as reduced environmental impact, no need for a process of assembling filter segments into tobacco-containing segments, and the ability to make packaging more compact.

The non-combustion heat smoking article can be comprised of a tobacco-containing segment.

The tobacco-containing segment may include, but is not limited to, a tobacco filler or may consist of a tobacco filler.

The tobacco filler is not particularly limited, but may include or consist of a sheet. In this specification, "sheet" refers to a shape having a pair of approximately parallel main surfaces and side surfaces. The sheet may have a length direction, a width direction, and a thickness direction, and the order of size may be "thickness" < "width" < "length".

The sheet is not particularly limited, but may be a sheet in a rolled state. In this specification, a rolled sheet means a sheet that is rolled into a scroll.
The sheet in a rolled state is preferably formed by rolling the sheet lengthwise into a scroll, which allows the user to enjoy the action of compacting the sheet.
In the rolled state, it is preferable to prevent the sheets from shifting in the width direction. In this specification, "the sheets are not shifted in the width direction" means that the shift in the width direction is 50% or less of the width of the sheets. By preventing the sheets from shifting in the width direction, uniform heat transfer to the sheets can be achieved. In the rolled state, the shift in the width direction of the sheets can be 0.01% to 50%, 0.1 to 40%, or 0.5 to 10% of the width of the sheets.

The sheet before being rolled can have a first surface and a second surface. In the rolled sheet, the first surface can face outward (the side opposite to the center of the roll) and the second surface can face inward (the side toward the center of the roll). In such a rolled sheet, the area of the first surface is not particularly limited, but is preferably 100 to 2000 ^mm2 , more preferably 250 to 1750 ^mm2 , and most preferably 500 to 1500 ^mm2 . By having the area of the first surface within the above numerical range, it becomes easier to remove the residue of the smoking article from the recess of the heating device after smoking.

Without being bound by theory, it is believed that when the rolled sheet is heated in the recess of the heating device described below, the heat from the heating device spreads from the outside of the sheet to the inside, and eventually the heat is transmitted to the center of the rolled sheet. In addition, the rolled sheet has a tendency to spread outward and return to its original curled state, and this tendency continues while it is being heated in the recess of the heating device, so that eventually the entire first surface of the rolled sheet may come into contact with the inside of the recess of the heating device. Therefore, the area of the first surface of the rolled sheet can be used as an indicator of contact with the inside of the recess of the heating device, and it is believed that as the area of the first surface increases, the contact with the inside of the recess increases.

The number of turns of the sheet in a rolled state is not particularly limited, but is preferably 1 to 3.5 turns, more preferably 1.3 to 3.0 turns, and most preferably 1.5 to 2.5 turns. The number of turns of the sheet in a rolled state can be calculated by (length of the sheet before rolled)/{(diameter of the circle constituting the outermost circular cross section of the rolled sheet)×(pi)}, or (length of the sheet before rolled)/{(inner diameter of the circular cross section of the (cylindrical) recess of the heating device into which the rolled sheet is inserted)×(pi)}. When the number of turns of the sheet is within the above numerical range, residue of the smoking article after smoking can be easily removed from the recess of the heating device.
The number of turns of the sheet in the rolled state is calculated on the assumption that the entire sheet spreads outward and fits along the inside of the recess of the heating device. As with the area of the first surface of the rolled sheet, the number of turns of the sheet in the rolled state can be used as an indicator of contact with the inside of the recess of the heating device, and it is considered that the greater the number of turns, the greater the contact with the inside of the recess.

The diameter of the circle that constitutes the outermost circular cross section of the rolled sheet when viewed in the width direction of the sheet is not particularly limited, but is preferably 5 to 20 mm, more preferably 7.5 to 15 mm, and most preferably 8.5 to 12 mm. By having the diameter within the above numerical range, the sheet can be inserted into the device (heating device) by hand alone, without using tools such as tweezers.

The tobacco-containing segment may include, but be not limited to, a tobacco filler and a cigarette paper (hereinafter also referred to as a wrapper), or may consist of a tobacco filler and a cigarette paper.
The tobacco filler can be filled into the wrapper. Filling the wrapper with the tobacco filler can prevent fingertips and the like from becoming dirty when inserting the tobacco-containing segment into the heating device. The method for filling the wrapper with the tobacco filler is not particularly limited, and for example, the tobacco filler may be wrapped in the wrapper, or the tobacco filler may be filled into a cylindrical wrapper. When the tobacco filler includes a rolled sheet, it can be filled in such a way that the rolled direction (longitudinal direction) of the sheet is aligned with the circumferential direction of the cylindrical wrapper.

An example of a rolled up sheet is shown in Figure 1. In Figure 1, a smoking composition sheet or material derived therefrom (tobacco sheet) 210 has a first surface (main surface) 210A and a second surface (main surface) (not shown) opposite the first surface. The smoking composition sheet or material derived therefrom (tobacco sheet) 210 is rolled into a scroll shape in the length direction of the sheet with the first surface 210A facing outward, and is rolled so as not to shift in the width direction.
An example of a tobacco-containing segment consisting of a rolled sheet and wrapper is shown in Figure 2. In the tobacco-containing segment (smoking segment) 200A of Figure 2, a smoking composition sheet or a material derived therefrom (tobacco sheet) 210 is filled into a cylindrical wrapper 220 such that the rolled direction (longitudinal direction) of the sheet is aligned with the circumferential direction of the wrapper 220.

The thickness of the sheet contained in the tobacco filling is not particularly limited, but is preferably 30 to 2000 μm, more preferably 50 to 1000 μm, and most preferably 70 to 500 μm. By having the thickness of the sheet within the above numerical range, the rolled sheet will exert an appropriate force to return to its original shape when inserted into the heating device.

The width of the sheet contained in the tobacco filling is not particularly limited, but is preferably 5 to 30 mm, more preferably 7.5 to 20 mm, and most preferably 8.5 to 17.5 mm. Having the sheet width within the above numerical range makes it easier to handle with the fingertips.

The length of the sheet contained in the tobacco filling is not particularly limited, but is preferably 20 to 150 mm, more preferably 30 to 120 mm, and most preferably 40 to 100 mm. By having the length of the sheet within the above numerical range, it becomes possible to roll it appropriately.

The cross-sectional shape of the sheet contained in the tobacco filler is not particularly limited, but can be a square such as a rectangle; a diamond; or an ellipse. Of these, a square is preferred. By using a square shape, uniform heat transfer can be achieved.

The sheet may further include an aerosol former.
The aerosol former may contain or consist of, but is not limited to, a polyol such as glycerin, 1,2-propanediol, or 1,3-propanediol; a fatty acid such as a medium chain fatty acid or palmitic acid; or a mixture of two or more of these. Among these, polyols are preferred. By using a polyol, stable smoke can be generated.

The amount of aerosol former contained in the sheet based on the entire sheet is not particularly limited, but is preferably 10 to 80% by mass, more preferably 15 to 60% by mass, and most preferably 15 to 30% by mass. By having the amount of aerosol former within the above numerical range, it is possible to smoke an appropriate number of times, about 10 to 20 times.

The sheet may contain or consist of, but is not limited to, fibers derived from plant raw materials, binders, aerosol formers, or a combination of two or more of these. Of these, it is preferable to use fibers derived from plant raw materials. By using fibers derived from plant raw materials, the skeletal structure of the sheet can be formed.

The above-mentioned plant raw materials are not particularly limited, but may include or consist of tobacco raw materials, herbal plants, citrus fruits, or a combination of two or more of these. Among these, tobacco raw materials are preferred. By using tobacco raw materials, the polysaccharides contained in the tobacco raw materials function as binders, making it possible to reduce the amount of binder added from the outside.

The tobacco raw materials mentioned above are raw materials derived from Nicotiana plants, and include, for example, tobacco raw materials such as tobacco leaves, aged tobacco leaves, tobacco shreds, tobacco powder, parts other than leaves such as backbone and stem residues, and processed products or waste products obtained by subjecting tobacco raw materials to processing. Tobacco leaves are a general term for harvested tobacco leaves before they undergo aging. One form of aging includes curing. Tobacco shreds are aged tobacco leaves, etc. that have been chopped into a specified size. Tobacco powder is tobacco leaves, etc. that have been crushed.

Various tobacco varieties can be used as the tobacco raw material. For example, examples of tobacco varieties include flue-cured, burley, orient, native, other Nicotiana tabacum varieties, and Nicotiana rustica varieties. These varieties can be used alone, but in order to obtain the desired flavor, they can also be blended during the process from tobacco leaf harvest to the processing of aged tobacco leaves into various forms (i.e., processed tobacco leaves) used in non-combustion heated tobacco products. Details of the tobacco varieties are disclosed in "Encyclopedia of Tobacco, Tobacco Research Center, March 31, 2009."

In this specification, the term "tobacco leaves" refers to harvested tobacco leaves before they are aged. One form of aging includes curing.
In contrast, tobacco leaves that have been aged and have not yet been processed into various forms for use in tobacco products (such as tobacco shreds, tobacco sheets, tobacco granules, etc.) are referred to as "aged tobacco leaves." Furthermore, aged tobacco leaves that have been processed into various forms for use in tobacco products are referred to as "processed tobacco leaves."

The sheet can be obtained as a tobacco sheet by forming a composition containing aged tobacco leaves into a sheet shape. The aged tobacco leaves used for the tobacco sheet are not particularly limited, but examples include those that have been deboned and separated into lamina and midrib. In this specification, the term "sheet" refers to a shape having a pair of roughly parallel main surfaces and side surfaces.

The method for forming the sheet is not particularly limited, but for example, tobacco powder, nicotine, flavor development aid, binder, and optionally an aerosol former and flavoring can be mixed, water is added to the mixture, kneaded, and the resulting kneaded product can be formed by known methods such as papermaking, casting, rolling, etc. Details of various sheets (tobacco sheets) formed by such methods are disclosed in "Encyclopedia of Tobacco, Tobacco Research Center, March 31, 2009."

In addition to the above-mentioned components, the sheet may further contain antioxidants, terpenes, menthol, or a combination of two or more of these. Of these, it is preferable to use menthol. By using menthol, you can enjoy a refreshing smoking experience.

2. Non-Combustion Heating Smoking System The non-combustion heating smoking system of the present invention includes a non-combustion heating smoking article.
A non-combustion heat smoking article (heat smoking article) may be heated by a heating device separate from the article, or may be heated by a heating device integrated with the article. In the former smoking article (separate type), the non-combustion heat smoking article and the heating device are collectively referred to as a "non-combustion heat smoking system." An example of a non-combustion heat smoking system will be described below with reference to Figures 3 to 5.

One embodiment of the non-combustion heat smoking system of the present invention is an electrically heated tobacco product. The electrically heated tobacco product includes a housing and a mouthpiece. The housing extends in an axial direction and has an opening formed at a first end in the axial direction. The housing has an internal storage space formed in communication with the opening. A non-combustion heat tobacco (non-combustion heat smoking article) (cartridge) containing a flavor component is stored in the storage space of the housing. The mouthpiece has an engagement portion and a holding portion. The engagement portion is engaged with the opening. The holding portion is configured to hold the non-combustion heat tobacco.
When replacing the non-combustion heated tobacco product (cartridge), the mouthpiece is removed from the housing, the engagement between the engagement portion of the mouthpiece and the opening of the housing is released, and the cartridge is then removed from the housing from which the mouthpiece has been removed, and the cartridge is replaced.
In the electrically heated tobacco product according to the above aspect, the mouthpiece is configured to extend on both sides of the opening in the axial direction when engaged with the opening. According to this aspect, when removing the mouthpiece from the housing, it is only necessary to grasp the part of the mouthpiece that protrudes outward beyond the opening of the housing, making it easy to remove the mouthpiece.

The non-combustion heated smoking system of the present invention may further include a heating device. The heating device may include or consist of the housing and mouthpiece described above.

FIG. 3 is a perspective view of an electrically heated tobacco product (flavor inhaler, hereinafter also simply referred to as an inhaler) according to one embodiment of the present invention, showing a state in which a cap (not shown) has been removed from the inhaler.
As shown in FIG. 3, an inhaler 1, which is an example of an electrically heated tobacco product according to the first embodiment, heats tobacco leaves and generates steam, which is then inhaled to allow a user to enjoy the flavor of the tobacco leaves.

As shown in FIG. 3, the inhaler 1 includes a main unit 10, a cartridge 20, and a mouthpiece 30. The cartridge 20 can be composed of the tobacco-containing segment (smoking segment) 200A described above.

The smoking segment 200A is cylindrical, and its overall length (length in the axial direction) is, for example, preferably 5 to 100 mm, more preferably 10 to 50 mm, and even more preferably 10 to 25 mm. The cross-sectional shape of the smoking segment 200A is not particularly limited, but can be, for example, circular, elliptical, polygonal, etc.

The smoking segment 200A has a smoking composition sheet (tobacco sheet) or a material derived therefrom (tobacco filler) 210 and a wrapper 220 wound around it. The smoking composition sheet or a material derived therefrom 210 may contain a flavoring. The smoking composition sheet (tobacco sheet) or a material derived therefrom (tobacco filler) 210 may be a rolled sheet, as described above.

The outer shape of the inhaler 1 is formed in a substantially rectangular prism shape with the axis O as the central axis. The main unit 10, cartridge 20, mouthpiece 30, and cap 40 are arranged in a line on the axis O. In the following description, in the direction of the axis O (direction along the axis O, axial direction), the side from the main unit 10 toward the mouthpiece 30 is referred to as the suction mouth side, and the direction from the mouthpiece 30 toward the main unit 10 is referred to as the anti-suction mouth side. In addition, the direction that intersects with the axis O in a plan view seen from the axis O direction is referred to as the radial direction. Within the radial direction, the direction approaching the axis O is referred to as the inner side, and the direction away from the axis O is referred to as the outer side. The direction that rotates around the axis O is referred to as the circumferential direction. In this specification, the term "direction" refers to two directions, and when referring to one of the "directions", it is written as "side".

FIG. 4 is a cross-sectional view taken along line III-III in FIG.
4, the main unit 10 has a housing 11, a power supply unit 15, and a heater 16. The housing 11 has a housing main body 110, a mouthpiece support member 120, a cartridge accommodating member 130, a cartridge holding member 140, and a control unit 152.

The housing body 110 includes an outer housing 111 and a bottom cap 116 .
The outer housing 111 is formed in a substantially rectangular tubular shape with the axis O as the central axis. The outer housing 111 constitutes the outer surface of the inhaler 1. The shape of the outer housing 111 can be appropriately set as long as it extends in the direction of the axis O.

A suction port side opening 111a is formed at the end of the outer housing 111 on the suction port side, penetrating in the direction of the axis O. A counter-suction port side opening 111b is formed at the end of the outer housing 111 on the side opposite to the suction port, penetrating in the direction of the axis O. A switch opening 111c is formed in a portion of the circumference of the outer housing 111, penetrating in the radial direction. A switch 112 is provided in the switch opening 111c.
In this embodiment, the radial direction is defined as the direction connecting the axis O and the switch opening 111c. In this case, the side of the switch opening 111c with respect to the axis O is defined as the front side, and the side opposite the switch opening 111c with respect to the axis O is defined as the back side.

The bottom cap 116 is provided at the anti-suction opening 111b of the outer housing 111. The bottom cap 116 is formed in a generally rectangular shape when viewed in a plan view from the axis O direction. The bottom cap 116 closes the anti-suction opening 111b of the outer housing 111. The shape of the bottom cap 116 can be set as appropriate, as long as it closes the anti-suction opening 111b of the outer housing 111.

An inner tubular member 117 is provided inside the housing body 110. The inner tubular member 117 extends in the direction of axis O and is formed in a generally rectangular tube shape. The inner tubular member 117 is constructed by connecting a pair of half-split members that are split along the direction of axis O. The overall length of the inner tubular member 117 (the length along the direction of axis O) is shorter than the overall length of the outer housing 111. The shape of the inner tubular member 117 can be set as appropriate.

A partition wall 118 is provided inside the inner tubular member 117 to separate the space housing the battery 151 from the space housing the heater 16.

The partition 118 has a suction port side partition 118a and a side partition 118b. This prevents air heated by the heater 16 from flowing into the space housing the battery 151. This prevents the temperature of the battery 151 from rising.

The suction port side partition 118a is disposed closer to the suction port than the battery 151. The side partition 118b is disposed so as to cover the outside of the battery 151 in the circumferential direction.
The mouthpiece support member 120 is provided at the mouth-side opening 111 a of the outer housing 111 .

The cartridge holding member 140 in the housing 11 can form the recess of the heating device described above. The cartridge holding member 140 can be cylindrical. In this case, the inner diameter of the cartridge holding member 140 (recess of the heating device) is not particularly limited, but is preferably 5.5 to 20 mm, more preferably 7.5 to 15 mm, and most preferably 8.5 to 12 mm. By having the inner diameter of the cartridge holding member 140 within the above numerical range, it can be designed according to the size of the smoking segment 200A, and this makes it possible to adjust the ease of removing the smoking article residue from the recess of the heating device after smoking.

FIG. 5 is a cross-sectional view of the mouthpiece 30 and cartridge 20 taken along the width direction.
As shown in FIG. 5, the engaging peripheral wall 33 has a thickness smaller at the portion 331 on the opposite side to the suction port than at the portion 332 on the opposite side to the suction port. As a result, a step 333 is formed at the boundary between the portion 331 on the opposite side to the suction port and the portion 332 on the opposite side to the suction port. The step 333 is formed in a substantially annular shape in a plan view from the O direction. As shown in FIG. 5, the end 20a on the suction port side of the cartridge 20 abuts against the step 333 of the engaging peripheral wall 33 of the mouthpiece 30. At the connection portion between the suction port portion 31 and the base portion 32, the opening width becomes wider from the suction port side toward the opposite side to the suction port. A space s3 is formed between the end 20a on the suction port side of the cartridge 20 and the surface on the opposite side to the suction port of the suction port portion 31 of the mouthpiece 30. As a result, the closed area of the end 20a on the suction port side of the cartridge 20 is reduced, and the airflow resistance is suppressed.
A support 21 such as a plastic mesh can be provided on the cartridge 20 side (opposite the mouthpiece side) of the mouthpiece 30 to prevent the heated material from spilling.

The heating temperature by the heater 16 is not particularly limited, but is preferably 400°C or less, more preferably 150 to 400°C, and even more preferably 200 to 350°C. The heating temperature refers to the temperature of the heater 16. The heating method by the heating device is not particularly limited, and in addition to heating by the heater described above, induction heating, microwave heating, etc. can be used.

The present invention will be described experimentally using the following examples, but the following description is not intended to limit the scope of the present invention to the following examples.

Example 1
1. Preparation of Tobacco Sheets 10 g of flue-cured tobacco leaves, 10 g of carboxymethyl cellulose, and 80 g of glycerin were mixed to obtain tobacco raw material (1). Using the obtained tobacco raw material (1), tobacco sheets of Samples 1 and 2 were produced, respectively, to have lengths of 45 mm and 100 mm based on a known rolling method.
In addition, 35 g of flue-cured tobacco leaves, 35 g of carboxymethyl cellulose, and 30 g of glycerin were mixed together to obtain tobacco raw material (2). Using the obtained tobacco raw material (2), tobacco sheets of Samples 3 and 4 having lengths of 45 mm and 100 mm were produced, respectively, based on a known rolling method.
Furthermore, 78 g of flue-cured tobacco leaves, 10 g of carboxymethyl cellulose, and 12 g of glycerin were mixed to obtain tobacco raw material 3. Using the obtained tobacco raw material 3, tobacco sheets of Samples 5 and 6 were produced, respectively, to have lengths of 45 mm and 100 mm based on a known papermaking method.
Each of the tobacco sheets obtained in the above manner was rolled in the length direction while preventing the sheet from shifting in the width direction to prepare a rolled tobacco sheet. The diameter of the circle constituting the outermost part of the circular cross section of the rolled tobacco sheet obtained in this manner was measured for each of the tobacco sheets in the rolled state, and was 6.9 mm for each of the tobacco sheets.

Table 1 shows the glycerin content in each of the tobacco sheets of Samples 1 to 6 obtained as described above, as well as the thickness, width, and length of the tobacco sheet before being rolled.
For each of the rolled tobacco sheets of Samples 1 to 6, the area of the first surface facing outward was calculated based on (width x length), and the number of turns was calculated based on (length of sheet before rolling) / {(inner diameter (10 mm) of the circular cross section of the (cylindrical) recess of the heating device into which the rolled sheet is inserted) x (pi)}. These calculated values are shown in Table 1.

The thickness of each tobacco sheet shown in Table 1 was measured by randomly selecting four points on each tobacco sheet without bias, measuring the thickness at each point using a counting outside micrometer M810-25 (manufactured by Mitutoyo Corporation), and averaging the measurements at the four points.

2. Preparation of non-combustion heat smoking article and smoking test Each of the tobacco sheets in the rolled state obtained as described above for samples 1 to 6 was filled into a wrapper with the length direction of the sheet aligned with the circumferential direction of the cigarette paper (wrapper) to obtain each of the tobacco fillings for samples 1 to 6. The obtained tobacco fillings for samples 1 to 6 were used as tobacco-containing segments (smoking segments), and non-combustion heat smoking articles (cartridges) 20 shown in Figures 3 to 5 were prepared without using a cooling segment or a filter segment. Meanwhile, an electrically heated tobacco product (inhaler) 1 (cartridge holding member 140: cylindrical, inner diameter: 10 mm) shown in Figure 3 was prepared. The non-combustion heat smoking articles and electrically heated tobacco products for the above samples 1 to 6 were used and installed in the non-combustion external heating smoking systems shown in Figures 3 and 4. A smoking machine (a single-piece smoking machine, manufactured by Borgwaldt) was placed next to the mouthpiece, and the non-combustion heat smoking article was heated by a heater set to the temperature (200, 210, or 240° C.) shown in Table 1 to generate vapor and aerosol, and the generated vapor and aerosol were inhaled with the smoking machine to perform a smoking test. Inhalation was performed at 55 ml/2 seconds per puff (1 puff was spaced at 30-second intervals, i.e., inhalation for 2 seconds and waiting for 28 seconds) based on the CIR method (Canadian Compulsory Smoking Conditions), with a total of 10 puffs.

The results of the above smoking tests showed that when the non-combustion heat smoking articles using the tobacco fillers of samples 1 to 6 shown in Table 1 were heated with a heater set at 200, 210, or 240°C, they generated sufficient vapor and aerosol and functioned adequately as non-combustion heat smoking articles.

3. Evaluation of Ease of Removal from Heating Device The residue of non-combustion heat smoking article remaining in the heating device after the above smoking test was evaluated for ease of removal from the heating device according to the following procedure.

(procedure)
After the smoking test of "2. Preparation of non-combustion heated smoking article and smoking test" was performed, the mouthpiece 30 was removed from the main unit 10. Then, the cartridge holding member 140 (forming the recess of the heating device) of the electrically heated tobacco product (inhaler) 1 was placed so that the inlet of the cartridge holding member 140 was downward and the longitudinal direction of the cartridge holding member 140 was perpendicular to the ground, and the article was left stationary. The ease of removal of the non-combustion heated smoking article when left stationary was evaluated according to the following criteria. The results are shown in Table 1. Even if the article falls under the following evaluation criterion B, the non-combustion heated smoking article can be removed from the cartridge holding member 140 of the electrically heated tobacco product (inhaler) 1 using a tool such as tweezers, so that the article can be fully used as a non-combustion heated smoking article, but if the article falls under evaluation criterion A, the article can be easily removed after use, which is more preferable.

(Evaluation criteria)
A: The entire non-combustion heated smoking article fell out of the recess of the heating device and could be removed.
B: At least a portion of the non-combustion heated smoking article remains in the recess of the heating device.

As shown in Table 1, when sample 2 or 4 was heated at 200°C, it was rated as B, and all other cases were rated as A. The results in Table 1 show that the higher the heating temperature, the lower the glycerin content in the tobacco sheet, and/or the smaller the area of the first surface of the tobacco sheet, the easier it is to remove the smoking article. This is thought to be because when the heating temperature is high, the sticky components in the tobacco sheet, such as glycerin, are heated sufficiently to lose their stickiness and become less likely to stick to the inner wall of the recess. In addition, when the glycerin content is low, glycerin is sticky, so there is less sticky component, and it becomes less likely to stick to the inner wall of the recess. Furthermore, when the area of the first surface of the tobacco sheet is small, the area of the tobacco sheet in contact with the recess is small, and friction between the recess and the tobacco sheet residue after heating is reduced.

As described above, the non-combustion heat smoking article of the present invention is a novel non-combustion heat smoking article that differs from conventional products in that it does not use filter segments or the like, and is useful as a non-combustion heat smoking article.

Reference Signs List 1: inhaler 10: main unit 11: housing 15: power supply unit 16: heater 20: cartridge (non-combustion heating smoking article)
20a... end portion 21... support 23... smoking composition sheet or material derived therefrom 24... cigarette paper (wrapper)
30... Mouthpiece 31... Suction mouth portion 32... Base portion 33... Engagement peripheral wall portion 331... Portion opposite to suction mouth side 332... Portion opposite to suction mouth side 333... Step portion 40... Cap 110... Housing main body 111... Outer housing 111a... Suction mouth side opening 111b... Anti-suction mouth side opening 111c... Switch opening 112... Switch 116... Bottom cap 117... Inner cylindrical member 118... Partition 118a... Suction mouth side partition portion 118b... Side partition portion 120... Mouthpiece support member 130... Cartridge accommodating member 140... Cartridge holding member 151... Battery 152... Control unit s3... Space portion
200A... Smoking segment 210... Smoking composition sheet or material derived therefrom 210A... First surface 220... Wrapper

Claims

A non-combustion heated smoking article that includes a tobacco-containing segment and does not include a cooling segment or a filter segment.
The non-combustion heat smoking article of claim 1, wherein the tobacco-containing segment includes a tobacco filler and the tobacco filler includes a sheet in a rolled state.
The non-combustion heating smoking article according to claim 2, wherein the sheet before being rolled has a first surface and a second surface, and in the rolled state of the sheet, the first surface faces outward and the second surface faces inward, and the area of the first surface is 100 to 2000 mm2 .
The non-combustion heat smoking article according to claim 2 or 3, wherein the number of turns of the sheet in the rolled state is 1 to 3.5.
The non-combustion heated smoking article according to any one of claims 2 to 4, wherein the sheet contains an aerosol former.
The non-combustion heated smoking article of claim 5, wherein the aerosol former comprises a polyol.
The non-combustion heat smoking article according to claim 5 or 6, wherein the content of the aerosol former in the sheet is 10 to 80% by weight.
The non-combustion heat smoking article according to any one of claims 2 to 7, wherein the sheet contains fibers derived from plant materials.
The non-combustion heat smoking article according to claim 8, wherein the plant material includes tobacco material.
The non-combustion heat smoking article according to any one of claims 2 to 9, wherein the sheet is a cast sheet or a rolled sheet.
A non-combustion heating smoking system comprising the non-combustion heating smoking article according to any one of claims 1 to 10.