WO2023084770A1

WO2023084770A1 - Non-combustion-heated stick

Info

Publication number: WO2023084770A1
Application number: PCT/JP2021/041900
Authority: WO
Inventors: 和彦片山; 公隆打井; 哲也本溜; 渓介春木
Original assignee: 日本たばこ産業株式会社
Priority date: 2021-11-15
Filing date: 2021-11-15
Publication date: 2023-05-19

Abstract

This non-combustion-heated stick 1 comprises: a tobacco section 10 that has an aerosol source 11 containing tobacco; a cooling section 20 that cools vapor, generated by heating the tobacco section 10 by means of a heat generating element, to produce an aerosol; and a filter section 30 through which the aerosol passes. The tobacco section 10 has a higher filling density of tobacco in a part closer to the heat generating element than in a part further away therefrom.

Description

Non-combustion heating stick

The present invention relates to non-combustion heating sticks.

Conventionally, a non-combustion heating type suction device that heats a tobacco portion filled with chopped tobacco leaves with a heater or the like is known. For example, in the device described in Patent Document 1, a heater is arranged around the periphery of the tobacco portion to heat it from the outside. The device described in Patent Document 2 heats the tobacco from the inside by inserting a heater into the tobacco.

International Publication No. 2020-100927 JP 2018-33466 A

In any heating method, it is preferable that the finite energy supplied to generate heat by a heating element such as a heater is used to increase the delivery amount of fillings such as nicotine and glycerin into the oral cavity.
SUMMARY OF THE INVENTION An object of the present invention is to provide a non-combustion heating stick that can efficiently use the energy supplied to a heating element to increase the amount of filler delivered into the oral cavity.

The first feature of the present invention completed for this purpose is to provide a tobacco portion having an aerosol source containing tobacco, and a vapor generated by heating the tobacco portion with a heating element to cool the aerosol. and a filter section through which the aerosol passes, wherein the tobacco section has a non-burning It is a heating stick.
A second feature is that the tobacco portion may be heated from the outside by the heating element arranged outside the tobacco portion, and the packing density on the outside may be higher than the packing density on the inside.
A third feature is that the tobacco portion comprises a filling portion filled with tobacco, and a tobacco sheet formed by crushing tobacco leaves into particles and wound around the filling portion. may have
A fourth feature is that the tobacco sheet may be at least one of a cast sheet, a laminate sheet, and a papermaking sheet.
A fifth feature is that the tobacco sheet may be laminated with at least one of a cast sheet, a laminate sheet and a papermaking sheet.
A sixth feature is that the tobacco portion may be heated from the inside by the heating element arranged inside the tobacco portion, and the packing density inside may be higher than the packing density outside.
A seventh feature is that the tobacco portion further includes a susceptor that generates heat by electromagnetic induction as the heating element, and the tobacco portion has a higher packing density around the susceptor than the packing density in the outer peripheral portion. can be
An eighth feature is a tobacco portion having an aerosol source containing tobacco, a cooling portion that cools steam generated by heating the tobacco portion with a heating element to generate an aerosol, and the aerosol passes through. a filter portion, wherein a tobacco sheet formed by pulverizing tobacco leaves into particles is disposed near the heating element; and the filling portion filled with tobacco is the above-mentioned A non-combustion heating stick positioned farther from the heating element than the tobacco sheet.
A ninth feature is that the tobacco portion may be heated from the outside by the heating element arranged outside the tobacco portion, and the tobacco sheet may be wound around the filling portion.

According to the first feature, the energy supplied to the heating element can be efficiently used to increase the delivery amount of the filler into the oral cavity.
According to the second feature, in the externally heated suction device, the energy supplied to the heating element can be efficiently used to increase the delivery amount of the filler.
According to the third feature, it is possible to easily and efficiently increase the delivery amount of the filler.
According to the fourth feature, the tobacco sheet can be made into a highly accurate sheet having a high packing density of tobacco.
According to the fifth feature, the tobacco sheet can be used to increase the area of high packing density.
According to the sixth feature, in the internal heating type suction device, the energy supplied to the heating element can be efficiently used to increase the delivery amount of the filler.
According to the seventh feature, in the suction device that generates heat by electromagnetic induction, the energy supplied to the heating element can be efficiently used to increase the delivery amount of the filler.
According to the eighth feature, the energy supplied to the heating element can be efficiently used to increase the delivery amount of the filler into the oral cavity.
According to the ninth feature, in the externally heated suction device, the energy supplied to the heating element can be efficiently used to increase the delivery amount of the filler.

It is a figure which shows an example of the vertical cross section of the stick which concerns on 1st Embodiment. BRIEF DESCRIPTION OF THE DRAWINGS It is a figure which shows typically an example of a schematic structure of the suction device with which the stick which concerns on 1st Embodiment is used. (a) is a comparison result of the amount of nicotine delivered when the configuration of the aerosol source of the tobacco part is changed. (b) is a comparison result of the amount of glycerin delivered when the configuration of the aerosol source of the tobacco part is changed. FIG. 4 shows a comparison of aerosol source configurations; It is a figure which shows an example of the longitudinal cross-section of the tobacco part which concerns on a modification. It is a figure which shows an example of the vertical cross section of the stick which concerns on 2nd Embodiment. FIG. 10 is a diagram schematically showing an example of a schematic configuration of a suction device in which a stick according to a second embodiment is used; It is a figure which shows an example of the vertical cross section of the stick which concerns on 3rd Embodiment. FIG. 10 is a diagram schematically showing an example of a schematic configuration of a suction device in which a stick according to a third embodiment is used;

Hereinafter, embodiments according to the present invention will be described in detail with reference to the accompanying drawings. In each drawing, the same parts are indicated by the same reference numerals.

<First Embodiment>
FIG. 1 is a diagram showing an example of a longitudinal section of a stick 1 according to the first embodiment.
FIG. 2 is a diagram schematically showing an example of a schematic configuration of a suction device 100 using the stick 1 according to the first embodiment.
A non-combustion heating stick (hereinafter sometimes referred to as “stick”) 1 according to the first embodiment includes a tobacco portion 10 , a cooling portion 20 and a filter portion 30 . The tobacco portion 10 is formed in a cylindrical shape. Hereinafter, the direction of the centerline CL of the tobacco portion 10 may be referred to as the "centerline direction". The stick 1 further includes a tipping paper 40 that integrates the tobacco portion 10, the cooling portion 20, and the filter portion 30 by winding them in order in the centerline direction. Hereinafter, one end side in the centerline direction (left side in FIG. 1) may be referred to as a first side, and the other end side in the centerline direction (right side in FIG. 1) may be referred to as a second side. The first side is the end side that is inserted into the suction device 100 . The second side is opposite to the first side and is the end side that the user holds in his/her mouth for suction. A cross section along the centerline direction is called a "longitudinal cross section", and a cross section taken along a plane perpendicular to the centerline direction is defined as a "transverse cross section".

[Usage pattern of stick 1]
The stick 1 according to the first embodiment is used in a non-combustion heating suction device 100 . As shown in FIG. 2, the suction device 100 includes a power supply unit 111 that accumulates power and supplies power to each component of the suction device 100, a sensor unit 112 that detects various information about the suction device 100, an information and a notification unit 113 for notifying the user of. The suction device 100 also includes a storage unit 114 for storing various information for the operation of the suction device 100, a communication unit 115 for transmitting and receiving information between the suction device 100 and other devices, and the suction device 100. and a control unit 116 for controlling overall internal operations. The suction device 100 also includes a heating portion 121 that heats the stick 1, a holding portion 140 that holds the stick 1, an opening 142 that communicates the internal space 141 with the outside, and other components of the suction device 100 from the heating portion 121. and a heat insulator 144 that prevents heat transfer to the element. In the suction device 100 , the user performs suction while the stick 1 is held by the holding portion 140 .

The heating section 121 heats the tobacco section 10 of the stick 1 . The heating part 121 is made of any material such as metal or polyimide. For example, the heating part 121 is configured in a film shape and arranged so as to cover the outer periphery of the holding part 140 . Then, when the heating part 121 generates heat, the aerosol source 11 included in the stick 1 is heated from the outer circumference of the stick 1 . The heating unit 121 generates heat when supplied with power from the power supply unit 111 . As an example, power may be supplied when the sensor unit 112 detects that a predetermined user input has been performed. Then, the heating unit 121 can be exemplified such that the target temperature is set to 280 degrees from the non-heated state, heated for 15 seconds, and after 15 seconds, the target temperature is set to a constant 260 degrees.

When the temperature of the stick 1 heated by the heating unit 121 reaches a predetermined temperature, the user can suck. After that, when the sensor unit 112 detects that a predetermined user input has been performed, the power supply may be stopped. As another example, power may be supplied and aerosol may be generated during a period in which the sensor unit 112 detects that the user has inhaled.

The heat insulation part 144 is arranged so as to cover at least the outer periphery of the heating part 121 . For example, the heat insulating part 144 is made of a vacuum heat insulating material, an airgel heat insulating material, or the like. A vacuum insulation material is, for example, a heat insulation material in which heat conduction due to gas is nearly zero by wrapping glass wool and silica (powder of silicon) in a resin film to create a high vacuum state. be.

[Tobacco section 10]
The tobacco portion 10 has an aerosol source 11 that generates vapor from which an aerosol is generated when heated, and a wrapping paper 12 that covers the outer circumference of the aerosol source 11 . The tobacco portion 10 is formed in a cylindrical shape by winding the aerosol source 11 around the wrapping paper 12 . At least part of the tobacco portion 10 is accommodated in the internal space 141 of the holding portion 140 while the stick 1 is held by the holding portion 140 . The specific configuration of the tobacco portion 10 will be described in detail later, but the shape is as follows.

The tobacco portion 10 preferably has a columnar shape that satisfies a shape with an aspect ratio of 1 or more defined by the following formula (1).
Aspect ratio = h/w (1)
w is the cross-sectional width of the tobacco portion 10, h is the size of the tobacco portion 10 in the center line direction, and h≧w is preferred. The shape of the cross section is not limited, and may be a polygon, a polygon with rounded corners, a circle, an ellipse, or the like. is the diameter of the circumscribed circle or the major axis of the circumscribed ellipse.

The size h of the tobacco portion 10 in the center line direction can be appropriately changed according to the size of the product, but is usually 10 mm or more, preferably 12 mm or more, more preferably 15 mm or more, and 18 mm or more. is more preferable. The size h of the tobacco portion 10 in the center line direction is usually 70 mm or less, preferably 50 mm or less, more preferably 30 mm or less, and even more preferably 25 mm or less.

In addition, in the centerline direction, the ratio of the size h of the tobacco portion 10 in the centerline direction to the size of the stick 1 in the centerline direction is not particularly limited. % or more, preferably 20% or more, more preferably 25% or more, even more preferably 30% or more. In addition, the ratio of the size h of the tobacco portion 10 in the center line direction to the size of the stick 1 in the center line direction is usually 80% or less, preferably 70% or less, and preferably 60% or less. It is more preferably 50% or less, particularly preferably 45% or less, and most preferably 40% or less.

The content of the aerosol source 11 in the tobacco portion 10 is not particularly limited, but may be 200 mg or more and 800 mg or less, preferably 250 mg or more and 600 mg or less. This range is particularly suitable for the tobacco portion 10 having a circumference of 22 mm and a centerline size of 20 mm.

[Cooling part 20]
The cooling section 20 is arranged adjacent to the tobacco section 10 and the filter section 30, and is a member formed such that the cross section of a cylinder or the like is hollow (cavity) by winding forming paper 21 thereon.

The size of the cooling part 20 in the centerline direction can be appropriately changed according to the size of the product, but it is usually 5 mm or more, preferably 10 mm or more, and more preferably 15 mm or more. Also, the size of the cooling part 20 in the center line direction is usually 35 mm or less, preferably 30 mm or less, and more preferably 25 mm or less. By setting the size of the cooling unit 20 in the center line direction to the above-described lower limit or more, it is possible to secure a sufficient cooling effect and obtain a good flavor. It is possible to suppress the loss caused by the aerosol adhering to the forming paper 21 .

The cooling part 20 preferably has a large inner surface area. The forming paper 21 forming the cooling section 20 may be formed by a thin sheet of material that is crumpled to form channels and then pleated, gathered and folded. The more folds or folds in a given volume of the element, the greater the total surface area of cooling section 20 .
The thickness of the molding paper 21 is not particularly limited, and may be, for example, 5 μm or more and 500 μm or less, or 10 μm or more and 250 μm or less. The material of the molding paper 21 is not particularly limited. For example, pulp may be the main component, and polyethylene, polypropylene, polyvinyl chloride, polyethylene terephthalate, polylactic acid, cellulose acetate, and aluminum foil may be used. may be the main component, or any combination thereof.

The cooling part 20 is provided with openings V (also called "ventilation filter (Vf)" in this technical field) concentrically and circumferentially. The opening V exists in a region where air can flow from the outside of the stick 1 , in other words, in a region where the stick 1 is held by the holding portion 140 of the suction device 100 and protrudes from the opening 142 .

Due to the existence of the openings V, air flows into the cooling portion 20 from the outside during inhalation, and the temperature of steam and air flowing in from the tobacco portion 10 can be lowered. Furthermore, by setting the position where the cooling unit 20 is provided within a region of 4 mm or more in the direction of the cooling unit 20 from the boundary between the cooling unit 20 and the filter unit 30, not only the cooling capacity is improved, but also the heat generated by heating It is possible to suppress the retention of the substance (product) in the cooling unit 20 and improve the delivery amount of the product.
It should be noted that the vapor generated from the aerosol as condensation nuclei by heating the tobacco portion 10 can be liquefied by contacting the air from the outside and the temperature is lowered, and the generation of the aerosol can be accelerated.

In the cooling unit 20, when the concentric holes V are treated as one hole group, the number of hole groups may be one, or two or more. When there are two or more hole groups, from the viewpoint of improving the delivery amount of the component generated by heating, from the boundary between the cooling unit 20 and the filter unit 30, in the region of less than 4 mm in the direction of the cooling unit 20 side It is preferable not to provide an aperture group.
When the stick 1 has the tobacco portion 10 , the cooling portion 20 and the filter portion 30 wrapped with the tipping paper 40 , the tipping paper 40 has an opening V provided in the cooling portion 20 . It is preferable that an opening is provided at the position of . When making such a stick 1, it is possible to prepare and wind a tipping paper 40 having openings overlapping with the openings V, but from the viewpoint of ease of manufacture, It is preferable to drill a hole through the cooling part 20 and the tipping paper 40 at the same time after making the stick 1 without the stick 1 .

The region where the opening V exists is not particularly limited as long as it is 4 mm or more in the direction of the cooling unit 20 from the boundary between the cooling unit 20 and the filter unit 30 from the viewpoint of improving the delivery of the product by heating. However, from the viewpoint of further improving product delivery, the area is preferably 4.5 mm or more, more preferably 5 mm or more, and even more preferably 5.5 mm or more. In addition, from the viewpoint of ensuring the cooling function, the region where the opening V exists is preferably a region of 15 mm or less, more preferably a region of 10 mm or less, and further preferably a region of 7 mm or less. .

From the viewpoint of improving the delivery of the product by heating, the region where the opening V exists is preferably a region of 24 mm or more in the direction from the end surface of the first side of the stick 1 to the cooling part 20 side, and 24.5 mm The area is preferably 25 mm or more, more preferably 25.5 mm or more. In addition, from the viewpoint of ensuring the cooling function, the region where the opening V exists is preferably a region of 35 mm or less, more preferably a region of 30 mm or less, and even more preferably a region of 27 mm or less. .

Considering the boundary between the cooling part 20 and the tobacco part 10 as a reference, if the size of the cooling part 20 in the center line direction is 20 mm or more, the area where the opening V is present has a cooling function. Therefore, from the boundary between the cooling part 20 and the tobacco part 10, the area is preferably 5 mm or more in the direction of the cooling part 20, more preferably 10 mm or more, and preferably 13 mm or more. More preferred. In addition, from the viewpoint of improving the delivery of the product by heating, the region where the opening V exists is preferably 16 mm or less, more preferably 15.5 mm or less, and 15 mm or less. is more preferred, and a region of 14.5 mm or less is particularly preferred.

The apertures V are provided so that the ratio of air inflow through the apertures V is 10% by volume or more and 90% by volume or less when sucked at 17.5 ml/sec by an automatic smoking machine. This "air inflow ratio" is the volume ratio of the air that has flowed in from the opening V when the ratio of the air sucked from the mouth end is 100% by volume. The air inflow ratio is preferably 50% by volume or more and 80% by volume or less, more preferably 55% by volume or more and 75% by volume or less. For these air inflow ratios, for example, the number of holes V per hole group is selected from the range of 5 to 50, and the diameter of the holes V is selected from the range of 0.1 mm or more and 0.5 mm or less. and can be achieved by a combination of these selections.
The air inflow ratio can be measured by a method conforming to ISO9512 using an automatic smoking machine (for example, a single bottle automatic smoking machine manufactured by Borgwaldt).

[Filter unit 30]
The filter unit 30 includes a first filter 31 connected to the second side of the cooling unit 20 , a second filter 32 positioned on the second side of the first filter 31 , and a combination of the first filter 31 and the second filter 32 . and a web 33 wrapped around it. The filter section 30 is connected to the second side of the cooling section 20 .

The first filter 31 is cylindrical, and the second filter 32 is columnar. The diameters of the outer peripheral surfaces of the first filter 31 and the second filter 32 can be appropriately changed according to the size of the product, but are usually 4.0 mm or more and 9.0 mm or less, and 4.5 mm or more and 8.5 mm or less. , and more preferably 5.0 mm or more and 8.0 mm or less. The cross-sectional shape of the first filter 31 and the second filter 32 may not be circular, but may be polygonal, elliptical, or the like.

The length of the perimeter in the cross section of the first filter 31 and the second filter 32 can be appropriately changed according to the size of the product, but is usually 14.0 mm or more and 27.0 mm or less, It is preferably 16.0 mm or more and 25.0 mm or less.
The size of the filter part 30 in the center line direction can be appropriately changed according to the size of the product. more preferred.

The ventilation resistance per 120 mm of the size of the filter part 30 in the center line direction is not particularly limited, but is usually 40 mmH ₂ O or more and 300 mmH ₂ O or less, preferably 70 mmH ₂ O or more and 280 mmH ₂ O or less, It is more preferably 90 mmH ₂ O or more and 260 mmH ₂ O or less.
The airflow resistance is measured according to the ISO standard method (ISO6565) using, for example, a Cerulean filter airflow resistance meter. The airflow resistance of the filter section 30 is determined by the air flow rate (17.5 cc/min) when air is flown from the first side to the second side in a state in which air does not pass through the side surface of the filter section 30. Refers to the pressure difference between the first side and the second side. Units are generally expressed in _mmH2O .

The first filter 31 and the second filter 32 are not particularly limited as long as they contain filter materials and have general filter functions. General functions of filters include, for example, adjusting the amount of air mixed when inhaling aerosols, etc., reducing flavor, reducing nicotine and tar, etc., but having all of these functions is not possible. don't need it. In addition, in the non-combustion heating stick 1, which tends to produce fewer components and a lower filling rate of the aerosol source 11 than cigarette products, the aerosol source 11 falls off while suppressing the filtering function. It is also one of the important functions to prevent

The filter material that constitutes the first filter 31 and the second filter 32 is, for example, a cylinder shaped filler such as cellulose acetate fiber, non-woven fabric, or pulp paper. Moreover, the aspect using the paper filter filled with the sheet-like pulp paper may be used.
Although the density of the filter material is not particularly limited, it is usually 0.10 g/cm ³ or more and 0.25 g/cm 3 or less, preferably 0.11 g/cm ³ ^or more and 0.24 g/cm ³ or less. More preferably, it is 0.23 g/cm ³ or more and 0.23 g/cm ³ or less.

[Chip paper 40]
The chip paper 40 connects (joins) the second end of the cooling unit 20 and the first end of the filter unit 30 by integrally winding them.
The material of the tipping paper 40 can be exemplified by those containing pulp as a main component. As for the pulp, in addition to being made from wood pulp such as softwood pulp and hardwood pulp, non-wood pulp such as flax pulp, hemp pulp, sisal pulp, and esparto, which are generally used for cigarette paper, are mixed. It may also be obtained by manufacturing. These pulps may be used singly or in combination of multiple types at any ratio.

As the form of pulp, chemical pulp, ground pulp, chemi-grand pulp, thermomechanical pulp, etc. prepared by kraft cooking method, acid/neutral/alkaline sulfite cooking method, soda salt cooking method or the like can be used.
Also, the tipping paper 40 may be composed of one sheet, or may be composed of a plurality of sheets or more.
The shape of the tipping paper 40 is not particularly limited, and can be square or rectangular, for example.

The basis weight of the tipping paper 40 is not particularly limited, but is usually 32 gsm to 60 gsm, preferably 33 gsm to 55 gsm, more preferably 34 gsm to 53 gsm.
Although the air permeability of the tipping paper 40 is not particularly limited, it is generally 0 Coresta unit or more and 30000 Coresta unit or less, and preferably more than 0 Coresta unit and 10000 Coresta unit or less. Air permeability is a value measured in accordance with ISO 2965:2009, and is expressed as the flow rate (cm ³ ) of gas passing through an area of 1 cm ² per minute when the pressure difference between both sides of the paper is 1 kPa. be done. One Coresta unit (1 Coresta unit, 1 CU) is cm ³ /(min·cm ² ) under 1 kPa.

The chipping paper 40 may contain fillers other than the above pulp, for example, metal carbonates such as calcium carbonate and magnesium carbonate, metal oxides such as titanium oxide, titanium dioxide and aluminum oxide, barium sulfate, metal sulfates such as calcium sulfate, metal sulfides such as zinc sulfide, quartz, kaolin, talc, diatomaceous earth, gypsum, and the like. Among these, it is particularly preferable to contain calcium carbonate from the viewpoint of improving the whiteness and opacity and increasing the heating rate. These fillers may be used singly or in combination of two or more.

In addition to the above pulp and filler, the chipping paper 40 may contain various auxiliary agents, for example, a water resistance improver to improve water resistance. Water resistance improvers include wet strength agents (WS agents) and sizing agents. Examples of wet strength agents include urea formaldehyde resin, melamine formaldehyde resin, polyamide epichlorohydrin (PAE), and the like. Examples of sizing agents include rosin soap, alkyl ketene dimer (AKD), alkenyl succinic anhydride (ASA), and highly saponified polyvinyl alcohol having a degree of saponification of 90% or more.

A coating agent may be added to at least one of the front and back sides of the tip paper 40 . The coating agent is not particularly limited, but a coating agent capable of forming a film on the paper surface and reducing liquid permeability is preferred.

A portion of the outer surface of the tipping paper 40 may be covered with a rip release material. The lip release material is configured to assist when the user mouths the filter portion 30 of the stick 1 so that the contact between the lips and the tipping paper 40 is easily released without substantially sticking. means any material that Lip release materials may include, for example, ethyl cellulose, methyl cellulose, and the like. For example, the outer surface of the tipping paper 40 may be coated with a rip release material by applying an ethylcellulose-based or methylcellulose-based ink to the outer surface of the tipping paper 40 .
In addition, it can be exemplified that the paper roll 33 of the filter section 30 is also formed of the same material as the tip paper 40 .

[Structure of Tobacco Portion 10]
{Aerosol source 11}
The aerosol source 11 has a filling portion 51 filled with tobacco, and a tobacco sheet 52 formed by pulverizing tobacco leaves into particles and wound around the filling portion 51 .

(Filling part 51)
The material of the filling portion 51 can be exemplified by lamina, mid-bone, or the like. The filling part 51 can be exemplified by chopped tobacco leaves. In addition, the filling unit 51 pulverizes dried tobacco leaves to have an average particle size of 20 μm or more and 200 μm or less to obtain pulverized tobacco, which is homogenized and processed into a sheet (hereinafter referred to as “homogenized sheet”). ) may be carved. Further, the filling portion 51 may be formed by chopping a homogenizing sheet having a size approximately equal to the size in the centerline direction of the tobacco portion 10 substantially horizontally with the centerline direction of the tobacco portion 10 . The width of the filling portion 51 can be exemplified to be 0.5 mm or more and 2.0 mm or less. The filling portion 51 is formed by folding a homogenizing sheet having a size approximately equal to the size in the center line direction of the tobacco portion 10 into a gathered shape, in other words, by folding back a plurality of times horizontally to the center line direction. It can be anything. Further, the filling portion 51 may be tobacco granules obtained by shaping tobacco powder into granules.

The type of tobacco used as the tobacco leaves used for making the filling portion 51 is not particularly limited. Examples include yellow, burley, oriental, landrace, other Nicotiana-tabacum varieties, Nicotiana-Rustica varieties, and mixtures thereof. As for the mixture, each kind can be appropriately blended and used so as to obtain the desired taste. Details of tobacco varieties are disclosed in "Tobacco Encyclopedia, Tobacco Research Center, March 31, 2009".

The method of manufacturing the homogenized sheet, that is, the method of pulverizing tobacco leaves and processing them into a homogenized sheet is not particularly limited. For example, a method of manufacturing using a papermaking process can be exemplified. Alternatively, a suitable solvent such as water may be mixed with pulverized tobacco leaves for homogenization, and then the homogenized product may be thinly cast on a metal plate or metal plate belt. Alternatively, a rolled sheet may be produced by mixing pulverized tobacco leaves with an appropriate solvent such as water, homogenizing the mixture, and extruding the mixture into a sheet. Details of the types of homogenizing sheets are disclosed in "Encyclopedia of Tobacco, Tobacco Research Center, March 31, 2009".

The water content of the filling part 51 can be 10% by mass or more and 15% by mass or less, preferably 11% by mass or more and 13% by mass or less, relative to the total amount of the aerosol source 11 . With such a water content, the occurrence of winding stains can be suppressed, and the winding aptitude at the time of manufacturing the tobacco portion 10 can be improved.

The filling portion 51 may contain extracts from various natural products and/or constituents thereof, depending on the application. Extractable substances and/or constituents thereof may include glycerin, propylene glycol, triacetin, 1,3-butanediol, and mixtures thereof.

The content of the extraction substances and/or their constituent components in the filling portion 51 is usually 5% by mass or more with respect to the total mass of the aerosol source 11 from the viewpoint of sufficiently generating an aerosol and imparting a good flavor. and preferably 10% by mass or more. In addition, the content of the extraction substances and/or their constituent components in the filling portion 51 is usually 50% by mass or less, preferably 15% by mass or more and 25% by mass or less.

The filling part 51 may contain perfume. The type of fragrance is not particularly limited, and menthol is particularly preferable from the viewpoint of imparting a good flavor. In addition, one type of perfume may be used alone, or two or more types may be used in combination.

(Tobacco sheet 52)
The tobacco sheet 52 can be exemplified by being manufactured by a known method such as papermaking, slurrying, rolling, etc., using tobacco leaves of the type described above.
In the case of papermaking, it can be manufactured by a method including the following steps. 1) Dry tobacco leaves are crushed and extracted with water to separate the water extract and residue. 2) Dry and concentrate the water extract under reduced pressure. 3) Pulp is added to the residue, fiberized with a refiner, and then paper is made. 4) A concentrated solution of the water extract is added to the paper sheet and dried to obtain a tobacco sheet. In this case, a step of removing some components such as nitrosamine may be added (see Japanese Patent Application Laid-Open No. 2004-510422). A tobacco sheet manufactured by papermaking may be referred to as a "papermaking sheet".

In the case of the slurry method, it can be produced by a method including the following steps. 1) Mix crushed tobacco leaves with water, pulp and binder. 2) The mixture is spread (cast) and dried. In this case, a step of removing some components such as nitrosamines by irradiating a slurry obtained by mixing water, pulp and binder with crushed tobacco leaves with ultraviolet rays or X-rays may be added. A tobacco sheet manufactured using a slurry method is sometimes referred to as a "cast sheet".
In the rolling method, a mixture of water, pulp and binder, and crushed tobacco leaves is stretched under pressure and dried. A tobacco sheet manufactured using a rolling method may be referred to as a "laminate sheet".

In addition, as described in International Publication No. 2014/104078, a non-woven tobacco sheet manufactured by a method including the following steps can also be used. 1) Mix powdered tobacco leaves and a binder. 2) The mixture is sandwiched between non-woven fabrics. 3) Forming the laminate into a certain shape by heat welding to obtain a non-woven tobacco sheet. A nonwoven tobacco sheet manufactured by a method including the above steps is sometimes referred to as a "nonwoven sheet".

The composition of the tobacco sheet 52 is not particularly limited. For example, the tobacco leaf content is preferably 50% by mass or more and 95% by mass or less with respect to the total mass of the tobacco sheet 52 . The tobacco sheet 52 may also contain a binder such as guar gum, xanthan gum, carboxymethylcellulose, sodium salt of carboxymethylcellulose, and the like. The binder amount is preferably 1% by mass or more and 10% by mass or less with respect to the total mass of the tobacco sheet 52 . The tobacco sheet 52 may further contain other additives. Examples of additives include fillers such as pulp.

Polyols such as glycerin, propylene glycol, and 1,3-butanediol may be added to the tobacco sheet 52 . The amount added to the tobacco sheet is preferably 5% by mass or more and 50% by mass or less, more preferably 15% by mass or more and 25% by mass or less, relative to the dry mass of the tobacco sheet.

The number of tobacco sheets 52 that the aerosol source 11 has may be one, or two or more may be laminated. When the filling portion 51 is wound with the tobacco sheet 52 in a cylindrical shape, for example, in the circumferential direction, the end portion of the tobacco sheet 52 and the end portion of the tobacco sheet 52 on the opposite side are overlapped by about 2 mm and glued to form a cylindrical shape. , and a shape in which the filling portion 51 is filled therein can be exemplified. The size of the rectangular tobacco sheet 52 can be determined by the size of the filling portion 51 .

As a mode in which the aerosol source 11 has two or more tobacco sheets 52, for example, a plurality of tobacco sheets 52 each having a size approximately equal to the size of the center line direction of the filling portion 51 are arranged concentrically. It can be exemplified that it is wound in a direction perpendicular to the centerline direction so as to be arranged in a shape. “Concentrically arranged” means that the centers of all the tobacco sheets 52 are arranged at approximately the same position.

The two or more tobacco sheets 52 may all have the same composition or physical properties, or part or all of each tobacco sheet 52 may have different compositions or physical properties. Further, the thickness of each tobacco sheet 52 may be the same or different. Although the thickness of each tobacco sheet 52 is not limited, it is preferably 150 μm or more and 1000 μm or less, more preferably 200 μm or more and 600 μm or less, in consideration of the balance between heat transfer efficiency and strength.

The packing density of the aerosol source 11 is not particularly limited, but is usually 250 mg/cm ³ or more, preferably 300 mg/cm ³ or more, from the viewpoint of securing the performance of the stick 1 and imparting a good flavor. Also, the packing density of the aerosol source 11 is usually 400 mg/cm ³ or less, preferably 350 mg/cm ³ or less.

Also, the aerosol source 11 may contain non-tobacco-derived materials made from plants other than tobacco (for example, mint, herbs, etc.). As an example, the aerosol source 11 may contain a perfume ingredient such as menthol.

{Wrapper 12}
The wrapping paper 12 can be exemplified, for example, by using pulp as a main component. As pulp, in addition to wood pulp such as softwood pulp and hardwood pulp, non-wood pulp such as flax pulp, hemp pulp, sisal pulp, and esparto, which are generally used for wrapping paper 12 for tobacco products, can be used. It may be obtained by mixing and manufacturing. Also, as the wrapping paper 12, a material having pulp as a main component and a material similar to the tobacco sheet 52 bonded together may be used.
The types of pulp that can be used include chemical pulp, ground pulp, chemi-grand pulp, thermomechanical pulp, and the like prepared by kraft cooking, acid/neutral/alkaline sulfite cooking, soda salt cooking, and the like.

Using the pulp, the winding paper 12 is manufactured by preparing and uniforming the texture in the papermaking process using a fourdrinier paper machine, a cylinder paper machine, a circular and short composite paper machine, and the like. If necessary, a wet strength agent may be added to impart water resistance to the wrapping paper 12, or a sizing agent may be added to adjust the printing condition of the wrapping paper 12. In addition, aluminum sulfate, various anionic, cationic, nonionic or amphoteric retention improvers, drainage improvers, and papermaking internal additives such as paper strength agents, as well as dyes, pH adjusters, Papermaking additives such as antifoam agents, pitch control agents, and slime control agents can be added.

The basis weight of the base paper for the wrapping paper 12 is, for example, usually 20 gsm or more, preferably 25 gsm or more. On the other hand, the basis weight is usually 65 gsm or less, preferably 50 gsm or less, more preferably 45 gsm or less.
The thickness of the wrapping paper 12 is not particularly limited, and is usually 10 μm or more, preferably 20 μm or more, more preferably 30 μm or more, from the viewpoints of rigidity, air permeability, and ease of adjustment during paper production. The thickness of the wrapping paper 12 is usually 100 μm or less, preferably 75 μm or less, more preferably 50 μm or less.

The shape of the wrapping paper 12 for producing the tobacco portion 10 can be square or rectangular. The length of one side of the wrapping paper 12 is about 12 mm to 70 mm, the length of the other side is about 15 mm to 28 mm, the preferred length of the other side is 22 mm to 24 mm, and the more preferred length is about 23 mm. can be mentioned. When the aerosol source 11 is wound with the wrapping paper 12 in a cylindrical shape, for example, in the circumferential direction, the end of the wrapping paper 12 and the end of the wrapping paper 12 on the opposite side are overlapped by about 2 mm and glued to form a cylindrical paper. An example may be the shape of a tube into which the aerosol source 11 is filled. The size of the rectangular wrapping paper 12 can be determined according to the size of the tobacco portion 10 .

In addition to the pulp described above, the paper wrapper 12 may also contain fillers. The content of the filler can be 10% by mass or more and less than 60% by mass, preferably 15% by mass or more and 45% by mass or less, based on the total mass of the wrapping paper 12 .
In the wrapping paper 12, the filler content is preferably 15% by mass or more and 45% by mass or less in a preferable basis weight range (25 gsm or more and 45 gsm or less).
Further, when the basis weight is 25 gsm or more and 35 gsm or less, the filler content is preferably 15 mass % or more and 45 mass % or less, and when the basis weight is 35 gsm or more and 45 gsm or less, the filler content is 25 mass % or more and 45 mass % or less. is preferred.
As a filler, calcium carbonate, titanium dioxide, kaolin, and the like can be used, but from the viewpoint of enhancing flavor and whiteness, it is preferable to use calcium carbonate.

Various auxiliary agents other than base paper and fillers may be added to the wrapping paper 12. For example, a water resistance improver may be added to improve water resistance. Water resistance improvers include wet strength agents (WS agents) and sizing agents. Examples of wet strength agents include urea formaldehyde resin, melamine formaldehyde resin, polyamide epichlorohydrin (PAE), and the like. Examples of sizing agents include rosin soap, alkyl ketene dimer (AKD), alkenyl succinic anhydride (ASA), and highly saponified polyvinyl alcohol having a degree of saponification of 90% or more.
As an auxiliary agent, a paper strength agent may be added, and examples thereof include polyacrylamide, cationic starch, oxidized starch, CMC, polyamide epichlorohydrin resin, polyvinyl alcohol, and the like. In particular, it is known that the use of an extremely small amount of oxidized starch improves air permeability (Japanese Patent Application Laid-Open No. 2017-218699).

A coating agent may be added to at least one of the front and back sides of the wrapping paper 12 . The coating agent is not particularly limited, but a coating agent capable of forming a film on the paper surface and reducing liquid permeability is preferred. For example, alginic acid and its salts (e.g. sodium salts), polysaccharides such as pectin, cellulose derivatives such as ethyl cellulose, methyl cellulose, carboxymethyl cellulose, nitrocellulose, starch and derivatives thereof (e.g. carboxymethyl starch, hydroxyalkyl starch and cationic starch). ether derivatives such as starch acetate, starch phosphate and ester derivatives such as starch octenylsuccinate).

As described above, the stick 1 cools vapor generated by heating the tobacco portion 10 having an aerosol source containing tobacco and the heating portion 121 as an example of a heating element. and a cooling unit 20 for generating aerosol, and a filter unit 30 through which the aerosol passes. In the tobacco portion 10 , the tobacco sheet 52 formed by pulverizing tobacco leaves into particles is arranged near the heating portion 121 , and the filling portion 51 filled with tobacco is closer to the tobacco sheet 52 than the tobacco sheet 52 . It is arranged at a position far from the heating unit 121 . That is, the heating portion 121 is formed in a film shape and arranged so as to cover the outer periphery of the holding portion 140 , and the tobacco portion 10 has the tobacco sheet 52 wound around the filling portion 51 . By wrapping the tobacco sheet 52 around the filling portion 51 in this manner, the packing density of the tobacco in the outer peripheral portion of the tobacco portion 10, which is a portion near the heating portion 121, is reduced to that of the inner portion, which is a portion far from the heating portion 121. It is realized to make it higher than the packing density.

As a result of diligent research by the inventors of the present invention, the above configuration is such that the heating section 121 is more effective when the packing density of the tobacco in the section near the heating section 121 in the tobacco section 10 is higher than the packing density in the section far from the heating section 121. This is based on the discovery that heat can be efficiently used to increase the delivery of fillers such as nicotine and glycerin.

FIGS. 3(a) and 3(b) are comparison results of nicotine and glycerin delivery amounts when the configuration of the aerosol source 11 of the tobacco portion 10 is changed.
FIG. 4 is a diagram showing a comparison of configurations of the aerosol source 11. FIG.
As shown in FIG. 4, Sample A uses a cast sheet as the tobacco sheet 52, and the filling portion 51 is formed by bonding the cast sheet and the wrapping paper 12 together and wound once (in other words, a single-roll configuration). be. Sample B uses a laminate sheet as the tobacco sheet 52, and the filling portion 51 has a configuration in which the laminate sheet and the wrapping paper 12 are pasted together and wound once (in other words, a configuration of one roll). Sample C does not use the tobacco sheet 52, but has a structure in which the filling portion 51 is wrapped with the wrapping paper 12 once (in other words, a structure of one roll). Samples A, B, and C have the same size in the centerline direction, and the tobacco portion 10, cooling portion 20, first filter 31, and second filter 32 have the same size in the centerline direction, respectively. 2 mm, 2.8 mm, 8 mm and 7 mm. The air inflow rate from the openings V is 70% by volume.

In Sample A, Sample B, and Sample C, the filling rate of the filling portion 51 is adjusted so that the filling amount (mgWB) of the tobacco in the tobacco portion 10 including the raw material amount of the tobacco sheet 52 is the same. . For example, as shown in FIG. 4, in sample C without tobacco sheet 52, the filling amount of filling portion 51, in other words, the filling amount of tobacco portion 10 is 264 mgWB, whereas sample A 3, the amount of filling of the cast sheet and the wrapping paper 12 bonded together is 39 mgWB, and the amount of filling of the filling portion 51 is 225 mgWB. In sample B, the filling amount of the laminated sheet and the wrapping paper 12 is 56 mgWB, and the filling amount of the filling portion 51 is 208 mgWB. In sample A, the filling ratio in the cast sheet and the wrapping paper 12 was 14.8 (=39/264×100)%, and in sample B, the laminate sheet and the wrapping paper 12 were bonded together. The percentage of filling in the product is 21.2 (=56/264×100)%.

In Sample A, Sample B, and Sample C, the outer diameter of the tobacco portion 10 is the same 7.1 mm, and the inner diameter of the bonded cast sheet and wrapping paper 12 in Sample A is 6.75 mm (in other words, the thickness is 0 .175 mm), the inner diameter of the laminated sheet and the wrapping paper 12 in Sample B is 6.75 mm (in other words, the thickness is 0.175 mm), and the inner diameter of the wrapping paper 12 in Sample C is 7.02 mm (in other words, the thickness is 0.04 mm). The volume of the filling portion 51 was set to 258 mm ³ , 238 mm ³ and 302 mm ³ for sample A, sample B and sample C, respectively. The volume filling ratios of sample A, sample B, and sample C are 60%, 55%, and 65%, respectively.

FIG. 3 shows the comparison results of the delivery amounts of nicotine and glycerin when sample A, sample B, and sample C are heated by the suction device 100. FIG. The horizontal axis indicates the number of puffs (suction) of Stick 1, and the delivery amounts of nicotine and glycerin were measured for each suction. The heating by the suction device 100 was carried out by setting the target temperature of the heating unit 121 to 280 degrees from the non-heating state, heating for 15 seconds, and then keeping the target temperature constant at 260 degrees. Note that 15 seconds corresponds to the time it takes to reach 280° C. when the heating unit 121 starts heating from a non-heated state, in other words, a state where the heating unit 121 is at an ambient temperature (for example, room temperature). The puffing conditions for measuring the delivery amount are as follows. Using an automatic smoking machine (single port smoking machine R26 manufactured by Borgwaldt), according to the intense method proposed by Health Canada, the suction volume was 55 ml, the suction time was 2 seconds for 1 puff, and the suction interval was 30 seconds. It should be noted that the measurement was performed while the aperture V was open.

As shown in FIG. 3( a ), the nicotine delivery amounts of sample A and sample B, in which the aerosol source 11 includes tobacco sheet 52 , are higher than those of sample C, which does not include tobacco sheet 52 . many. In particular, the number increases significantly from the third suction to the seventh suction. Although the difference between sample A and sample B is not large, the delivery amount of sample B using a laminate sheet is greater than the delivery amount of sample A using a cast sheet. It is considered that this is because the filling amount in the laminated sheet and the wrapping paper 12 is larger than the filling amount in the casting sheet and the wrapping paper 12 bonded together.

As shown in FIG. 3( b ), the amount of glycerin delivered by sample A and sample B, in which the aerosol source 11 has tobacco sheet 52 , is higher than that of sample C, which does not have tobacco sheet 52 . many. In particular, the number is remarkably increased from the 5th suction to the 9th suction. Although the difference between sample A and sample B is not large, the delivery amount of sample B using a laminate sheet is greater than the delivery amount of sample A using a cast sheet. It is considered that this is because the filling amount in the laminated sheet and the wrapping paper 12 is larger than the filling amount in the casting sheet and the wrapping paper 12 bonded together.

According to the results shown in FIGS. 3A and 3B, the packing density of the tobacco in the outer peripheral portion of the tobacco portion 10, which is the portion near the heating portion 121, is higher than the packing density of the portion far from the heating portion 121. However, the heat of the heating unit 121 can be efficiently used to increase the delivery amounts of nicotine and glycerin.

3(a) and 3(b), the stick 1, for example, the aerosol source 11 does not have the tobacco sheet 52 and the filling portion 51 is wrapped with the wrapping paper 12, and the tobacco in the aerosol source 11 This indicates that the heat of the heating part 121 is more efficiently connected to an increase in the delivery amount of nicotine and glycerin than the configuration in which the filling density of is uniform from the outer periphery to the inside.

Here, in the above-described sample A and sample B, the tobacco sheet 52 was extended inward from the outer peripheral surface of the tobacco portion 10 to 0.175 mm, in other words, to about 5% of the radius (3.55 mm) of the tobacco portion 10. It is composed of a material that covers the periphery of the filling portion 51 by being contained and wound, and this covering material is preferably up to 10% of the radius of the tobacco portion 10 . This is because if the material covering the surroundings of the filling portion 51 by being wound is thick, the rigidity of the material increases, making it difficult to wind. Therefore, the covering may be up to 20% of the radius of the tobacco portion 10, provided that the covering can be rolled.

That is, in the stick 1, it is preferable that the packing density of the tobacco in the portion up to 20% of the radius from the outer peripheral surface of the tobacco portion 10 to the inside is higher than the packing density of the tobacco in the portion inside the 20% of the radius. . More preferably, the stick 1 has a higher packing density of tobacco in a portion up to 10% of the radius inward from the outer peripheral surface of the tobacco portion 10 than in a portion inside 10% of the radius. is good. According to this configuration, the heat of the heating unit 121 can be efficiently used to increase the delivery amount of the filler such as nicotine and glycerin.

The tobacco portion 10 has a configuration in which the aerosol source 11 has a tobacco sheet 52 on its outer peripheral portion, and the aerosol source 11 is further wrapped with the wrapping paper 12, but it is not particularly limited to this aspect. For example, the tobacco section 10 may not have the wrapping paper 12 .

Further, means for making the packing density of tobacco in the outer peripheral portion of the tobacco portion 10 higher than the packing density of tobacco in the inner portion is not limited to covering the periphery of the filling portion 51 with a covering including the tobacco sheet 52. .
FIG. 5 is a diagram showing an example of a longitudinal section of the tobacco portion 10 according to the modification.
As shown in FIG. 5, the filling portion 51 is composed of a first filling portion 511 provided on the outer periphery and a second filling portion 512 provided inside the first filling portion 511. The tobacco filling density in the filling portion 511 may be higher than the tobacco filling density in the second filling portion 512 .

<Second embodiment>
FIG. 6 is a diagram showing an example of a longitudinal section of the stick 2 according to the second embodiment.
A stick 2 according to the second embodiment differs from the stick 1 according to the first embodiment in a tobacco portion 210 corresponding to the tobacco portion 10 . Differences from the first embodiment will be described below. The same reference numerals are used for the same items in the first embodiment and the second embodiment, and detailed descriptions thereof are omitted.

FIG. 7 is a diagram schematically showing an example of a schematic configuration of a suction device 200 using the stick 2 according to the second embodiment.
The suction device 200 using the stick 2 differs from the suction device 100 using the stick 1 according to the first embodiment in a heating unit 221 corresponding to the heating unit 121 . Differences from the suction device 100 will be described below. The same reference numerals are used for the same components in the suction device 200 and the suction device 100, and detailed description thereof will be omitted.

The heating part 221 is configured in a blade shape and arranged so as to protrude from the central part of the bottom part 143 of the holding part 140 into the internal space 141 of the holding part 140 in the center line direction. Therefore, when the stick 2 is inserted into the holding portion 140 , the blade-like heating portion 221 is inserted into the stick 2 so as to pierce the tobacco portion 210 of the stick 2 . Then, when the heating part 221 generates heat, the aerosol source contained in the tobacco part 210 of the stick 2 is heated from inside the stick 2 and atomized to generate an aerosol.

The tobacco portion 210 of the stick 2 is configured such that the filling density of tobacco in the central portion, which is a portion near the heating portion 221, is higher than that in the outer peripheral portion, which is a portion far from the heating portion 221.
More specifically, the tobacco portion 210 has an aerosol source 211 that generates vapor from which an aerosol is generated by being heated, and a wrapping paper 212 that is similar to the wrapping paper 12 and that covers the outer periphery of the aerosol source 211 . are doing. The tobacco portion 210 is formed in a cylindrical shape by winding the aerosol source 211 around the wrapping paper 212 .

The aerosol source 211 corresponds to the filling portion 51 of the stick 1 and is filled with tobacco. The aerosol source 211 has a cylindrical first filling portion 251 provided on the outer peripheral portion and a cylindrical second filling portion 252 provided inside the first filling portion 251 . Furthermore, the packing density of tobacco in the second filling portion 252 is higher than the packing density of tobacco in the first filling portion 251 .

For example, the tobacco portion 210 is formed by filling the inside of the first filling portion 251 formed by compressing chopped tobacco leaves or the like (hereinafter sometimes referred to as “chopped tobacco”) into a cylindrical shape. can be exemplified by forming the second filling portion 252 in , and then wrapping the circumference of the first filling portion 251 with the wrapping paper 212 . Alternatively, the first filling portion 251 is formed by filling the outside of the second filling portion 252 in which tobacco shreds are compacted into a cylindrical shape, and the first filling portion 251 is formed, and the surroundings of the tobacco shreds are wrapped with the wrapping paper 212. can be exemplified.

The radial thickness of the second filling portion 252 should be at least 20% of the radius of the tobacco portion 210 around the heating portion 221 inserted into the second filling portion 252. is preferred. More preferably, the radial thickness of the second filling portion 252 around the heating portion 221 is 10% of the radius of the tobacco portion 210 .

Further, the shape of the second filling part 252 may be cylindrical before the blade-shaped heating part 221 is inserted. When the second filling portion 252 is cylindrical, and when the cross section of the heating portion 221 is circular, the inner diameter of the second filling portion 252 is equal to or less than the diameter of the heating portion 221. When the shape of the cross section is elliptical, the inner diameter of the second filling portion 252 can be exemplified to be equal to or less than the major axis of the heating portion 221 . Further, when the second filling portion 252 is cylindrical, and when the cross section of the heating portion 221 is polygonal, the inner diameter of the second filling portion 252 is the diameter of the circumscribed circle of the heating portion 221 or the circumscribed circle. It can be exemplified that it is equal to or less than the major axis of the ellipse.

Further, when the second filling portion 252 is cylindrical, it may be configured to include at least one of the above-described paper-made sheet, cast sheet, laminate sheet, and non-woven fabric sheet. For example, the cylindrical second filling portion 252 may be formed by winding the papermaking sheet multiple times. When the second filling portion 252 includes at least one of tobacco sheets such as paper-making sheets, cast sheets, laminated sheets, and non-woven fabric sheets, tobacco shreds are filled around the second filling portion 252. It is preferable to form the first filling portion 251 with the wrapping paper 212 around the outside of the filled cut tobacco.

The tobacco portion 210 of the stick 2 configured as described above is heated from inside by a heating portion 221 as an example of a heating element arranged inside the tobacco portion 210, and a second filling portion 252 is arranged inside. is higher than that in the first filling portion 251 arranged outside. According to this configuration, the heat of the heating unit 221 can be efficiently used to increase the delivery amount of the filler such as nicotine and glycerin.

The stick 2 supports the tobacco portion 210 in order to prevent the aerosol source 211 from moving to the second side in the centerline direction when the blade-shaped heating portion 221 is inserted into the tobacco portion 210. A support portion may be provided between the tobacco portion 210 and the cooling portion 20 . The support part is a cylindrical member, and can be exemplified by being similar to the first filter 31, for example.

<Third Embodiment>
FIG. 8 is a diagram showing an example of a longitudinal section of the stick 3 according to the third embodiment.
A stick 3 according to the third embodiment differs from the stick 1 according to the first embodiment in a tobacco portion 310 corresponding to the tobacco portion 10 . The tobacco portion 310 includes an aerosol source 311 that generates vapor from which an aerosol is generated when heated, a wrapping paper 312 that is similar to the wrapping paper 12 and that covers the outer circumference of the aerosol source 311, and a susceptor 313 that will be described later. have. Differences from the first embodiment will be described below. The same reference numerals are used for the same items in the first embodiment and the third embodiment, and detailed description thereof will be omitted.

FIG. 9 is a diagram schematically showing an example of a schematic configuration of a suction device 300 using the stick 3 according to the third embodiment.
The suction device 300 using the stick 3 differs from the suction device 100 using the stick 1 according to the first embodiment in that an electromagnetic induction source 321 is provided instead of the heating unit 121 . Differences from the suction device 100 will be described below. The same reference numerals are used for the same components in the suction device 300 and the suction device 100, and detailed description thereof will be omitted.

The electromagnetic induction source 321 heats the susceptor 313 of the stick 3 by electromagnetic induction. The electromagnetic induction source 321 is composed of, for example, a coiled conductor wire, and is arranged so as to wrap around the outer circumference of the holding portion 140 . The electromagnetic induction source 321 generates a magnetic field when alternating current is supplied from the power supply section 111 . The electromagnetic induction source 321 is arranged at a position where the internal space 141 of the holding section 140 overlaps the generated magnetic field. Therefore, when a magnetic field is generated while the stick 3 is held by the holding portion 140, an eddy current is generated in the susceptor 313 and Joule heat is generated. Then, the Joule heat heats the aerosol source 311 contained in the stick 3 and atomizes it to generate an aerosol.

The susceptor 313 generates heat by electromagnetic induction. The susceptor 313 is made of a conductive material such as metal. As an example, the susceptor 313 is a piece of metal. A susceptor 313 is positioned inside the aerosol source 311 . The susceptor 313 can be exemplified by being rectangular parallelepiped or columnar.

The aerosol source 311 has a cylindrical first filling portion 351 provided on the outer peripheral portion and a second filling portion 352 provided inside the first filling portion 351 and arranged around the susceptor 313 . The tobacco filling density in the second filling portion 352 is higher than the tobacco filling density in the first filling portion 351 .

For example, the tobacco portion 310 is formed by filling tobacco cuts around the susceptor 313 inside the first filling portion 351 formed by compressing tobacco cuts into a cylindrical shape. Manufacture by winding the surroundings of the filling part 351 with the wrapping paper 312 can be exemplified. Alternatively, the first filling portion 351 is formed by filling the outside of the second filling portion 352 in which the cut tobacco is compressed into a cylindrical shape around the susceptor 313, and the tobacco shreds are surrounded by the wrapping paper 312. Manufacturing by winding can be exemplified.

Further, the second filling part 352 may be configured by winding the susceptor 313 with at least one of the above-described paper-making sheet, cast sheet, laminate sheet, and non-woven fabric sheet. For example, the second filling portion 352 may be formed by winding the susceptor 313 a plurality of times with a papermaking sheet. Further, when the second filling portion 352 includes at least one tobacco sheet such as a paper-making sheet, a cast sheet, a laminate sheet, or a non-woven fabric sheet, tobacco shreds may be filled around the second filling portion 352. The first filling portion 351 is formed with , and the outer side of the filled cut tobacco is preferably wrapped with wrapping paper 312 .

The minimum radial thickness of the second filling portion 352 should be at least 20% of the radius of the tobacco portion 310 around the susceptor 313 disposed inside the second filling portion 352. is preferred. More preferably, the minimum radial thickness of the second filling portion 352 around the susceptor 313 is 10% of the radius of the tobacco portion 310 .

The tobacco portion 310 of the stick 3 configured as described above is heated from the inside by the susceptor 313 as an example of a heating element arranged inside the tobacco portion 310, and the second filling portion 352 arranged inside The packing density is higher than the packing density in the first filling portion 351 arranged outside. According to this configuration, the heat of the susceptor 313 can be efficiently used to increase the delivery amount of the filler such as nicotine and glycerin.

REFERENCE SIGNS LIST 1

non-combustion heating stick

10, 210, 310

tobacco portion

11, 211, 311

aerosol source

12, 212, 312 wrapping paper 20 cooling portion 30 filter portion 40 chip paper 51 Filling part 52

Tobacco sheet

121, 221 Heating part (an example of heating element) 251, 351, 511

First filling part

252, 352, 512 Second filling part 313 Susceptor (heating element an example), 321 ... electromagnetic induction source

Claims

a tobacco portion having an aerosol source containing tobacco;
a cooling unit that cools vapor generated by heating the tobacco portion by a heating element to generate an aerosol;
a filter section through which the aerosol passes;
with
In the tobacco portion, the packing density of the tobacco in a portion close to the heating element is higher than that in a portion far from the heating element.
Non-combustion heating stick.
The tobacco portion is heated from the outside by the heating element arranged outside the tobacco portion, and the packing density on the outside is higher than the packing density on the inside.
The non-combustion heated stick of claim 1.
The tobacco portion has a filling portion filled with tobacco, and a tobacco sheet formed by pulverizing tobacco leaves into particles and wound around the filling portion.
3. The non-combustion heated stick of claim 2.
The tobacco sheet is at least one of a cast sheet, a laminate sheet and a papermaking sheet,
4. The non-combustion heated stick of claim 3.
The tobacco sheet is laminated with at least one of a cast sheet, a laminate sheet, and a papermaking sheet.
5. The non-combustion heated stick of claim 4.
The tobacco portion is heated from the inside by the heating element arranged inside the tobacco portion, and the packing density inside is higher than the packing density outside.
The non-combustion heated stick of claim 1.
The tobacco portion further has a susceptor that generates heat by electromagnetic induction as the heating element,
In the tobacco portion, the packing density around the susceptor is higher than the packing density around the outer circumference.
The non-combustion heated stick of claim 1.
a tobacco portion having an aerosol source containing tobacco;
a cooling unit that cools vapor generated by heating the tobacco portion by a heating element to generate an aerosol;
a filter section through which the aerosol passes;
with
In the tobacco portion, a tobacco sheet formed by pulverizing tobacco leaves into particles is arranged near the heating element, and the filling portion filled with tobacco is located closer to the heating element than the tobacco sheet. located far away,
Non-combustion heating stick.
The tobacco portion is externally heated by the heating element arranged outside the tobacco portion, and the tobacco sheet is wound around the filling portion.
9. The non-combustion heated stick of claim 8.