EP4736678A1

EP4736678A1 - Non-combustion type flavor inhalation article

Info

Publication number: EP4736678A1
Application number: EP23943708.0A
Authority: EP
Inventors: Tetsuya Motodamari
Original assignee: Japan Tobacco Inc
Current assignee: Japan Tobacco Inc
Priority date: 2023-06-30
Filing date: 2023-06-30
Publication date: 2026-05-06
Also published as: KR20260004511A; JPWO2025004317A1; WO2025004317A1

Abstract

Provided is a non-combustion type flavor inhalation article having a tobacco member, a cooling member, and a mouthpiece, wherein the mouthpiece includes an adsorption segment containing an adsorbent, the adsorption segment has an airflow resistance of 5 mmH₂O or less, and the amount of the adsorbent is 4-10 (mg/longitudinal length mm).

Description

TECHNICAL FIELD

The present invention relates to a non-combustion flavor inhalation article.

BACKGROUND ART

The use of activated charcoal is known in flavor inhalation articles. PTL 1, for example, discloses an aerosol-generating article comprising between 0.005 mg and 0.1 mg of activated carbon disposed between an aerosol-forming substrate and a mouthpiece filter, wherein the activated carbon is coupled to an elongated carbon support element in the form of a thread. Furthermore, PTL 2 discloses a cigarette employing a charcoal filter. Recent years have seen greater development of non-combustion flavor inhalation articles. Non-combustion flavor inhalation articles generate fewer flavor components than conventional combusted smoking articles (cigarettes), so the filter needs to have low filtration in order to deliver flavor to the user. Reducing the airflow resistance of the filter is a generally known way of achieving low filtration.

CITATION LIST

PATENT LITERATURE

PTL 1: JP 2018-530318 A
PTL 2: WO 2011/118042 A1

SUMMARY OF INVENTION

TECHNICAL PROBLEM

The smoke delivered from a non-combustion flavor inhalation article contains a particle phase (aerosol) and a vapor phase (gas). The particle phase contains flavor components and active components, and is therefore preferably delivered selectively. Reducing the airflow resistance of the filter is generally effective for enhancing delivery efficiency. However, simply reducing the airflow resistance is not sufficient to remove the undesirable vapor phase. In light of the situation above, the problem addressed by the present invention lies in providing a non-combustion flavor inhalation article capable of selectively delivering a particle phase (aerosol) to a user.

SOLUTION TO PROBLEM

The present inventors found that the vapor phase could be efficiently removed by increasing the adsorption capacity of the filter while reducing the airflow resistance to enhance the efficiency of delivering the particle phase. That is to say, the problem above is solved by the following invention.

Aspect 1

A non-combustion flavor inhalation article comprising a tobacco member, a cooling member, and a mouthpiece, wherein

the mouthpiece comprises an adsorption segment containing an adsorbent,
the adsorption segment has an airflow resistance of 5 mmH₂O or less, and
an amount of the adsorbent is 4-10 (mg/adsorption segment longitudinal length mm).

Aspect 2

The non-combustion flavor inhalation article as disclosed in aspect 1, wherein the adsorption segment comprises an adsorbent-containing sheet.

Aspect 3

The non-combustion flavor inhalation article as disclosed in aspect 1 or 2, wherein the adsorbent is activated charcoal.

Aspect 4

The non-combustion flavor inhalation article as disclosed in aspect 2 or 3, wherein the sheet comprises pulp.

Aspect 5

The non-combustion flavor inhalation article as disclosed in any of aspects 1 to 4, wherein, taking a short-side direction of the non-combustion flavor inhalation article as the width,
the adsorption segment is packed with a sheet having a width of 150 mm or less.

Aspect 6

The non-combustion flavor inhalation article as disclosed in any of aspects 1 to 5, wherein the adsorption segment comprises a wrapper having a basis weight of 50 gsm (g/m²) or greater.

Aspect 7

The non-combustion flavor inhalation article as disclosed in any of aspects 1 to 6, wherein the mouthpiece further comprises a mouthpiece-side segment disposed downstream of the adsorption segment.

Aspect 8

The non-combustion flavor inhalation article as disclosed in any of aspects 1 to 7, wherein the adsorption segment has a cross-sectional void ratio of greater than 30%.

ADVANTAGEOUS EFFECTS OF INVENTION

The present invention makes it possible to provide a non-combustion flavor inhalation article capable of selectively delivering a particle phase (aerosol) to a user.

BRIEF DESCRIPTION OF DRAWINGS

Fig. 1 shows one mode of a heat-not-burn flavor inhalation article.
Fig. 2 shows the outline of an adsorption segment.
Fig. 3 shows a mode in which a mouthpiece is formed by three segments.
Fig. 4 shows one mode of a heat-not-burn flavor inhalation system.
Fig. 5 is a diagram comparing nicotine and glycerol delivery, with Comparative Example 2 as a reference.
Fig. 6 is a diagram comparing acetaldehyde, acetone and acrolein delivery, with Comparative Example 1 as a reference.

DESCRIPTION OF EMBODIMENTS

As used in the present disclosure, the range "X-Y" includes X and Y as the end values. Unless specifically stated otherwise, "weight" is dry weight. Furthermore, "downstream" means a direction toward a mouthpiece end of the non-combustion flavor inhalation article.

1. Non-combustion flavor inhalation article

Non-combustion flavor inhalation articles are broadly divided into heat-not-burn flavor inhalation articles and no-heat, no-burn flavor inhalation articles. Heat-not-burn flavor inhalation articles include inhalation articles which directly heat a flavor source to generate a flavor, and inhalation articles which indirectly heat a flavor source to generate a flavor. Methods of indirect heating that may be cited include a method in which the flavor source is indirectly heated by introducing an aerosol generated upstream into the flavor source. No-heat, no-burn flavor inhalation articles generate a flavor by atomizing a liquid flavor source with vibration or the like. The non-combustion flavor inhalation article according to this embodiment is preferably a heat-not-burn flavor inhalation article. The heat-not-burn flavor inhalation article comprises a tobacco member, a cooling member, and a mouthpiece. The cooling member is preferably on the downstream side of the tobacco member, and the mouthpiece is preferably on the downstream side of the cooling member. Fig. 1 shows one mode of the heat-not-burn flavor inhalation article. In the drawing, 10 is a heat-not-burn flavor inhalation article, 1 is a tobacco member, 3 is a cooling member, 5 is a mouthpiece, 51 is a mouthpiece-side segment, 52 is an adsorption segment, and V are ventilation holes. There is no limitation as to the size of the heat-not-burn flavor inhalation article. For example, the length thereof may be around 50-80 mm, and the cross-sectional diameter thereof may be around 5.5-7.5 mm. This embodiment will be described below using the example of a heat-not-burn flavor inhalation article.

(1) Mouthpiece

The mouthpiece is a member constituting a mouthpiece end. In one mode, the mouthpiece 5 comprises an adsorption segment 52 and a mouthpiece-side segment 51 downstream thereof.

1) Adsorption segment

Adsorbent

The adsorption segment 52 contains an adsorbent. An adsorbent is an agent capable of adsorbing components generated from the heat-not-burn flavor inhalation article. Examples of adsorbents that may be cited include activated charcoal, zeolite, activated alumina, and silica gel, etc. Among these, the adsorbent preferably comprises activated charcoal, and more preferably consists of activated charcoal, from the perspective of availability, etc. The surface area of the activated charcoal is preferably 500-3000 m²/g, and more preferably 700-2500 m²/g. The surface area of the adsorbent is the BET specific surface area, which is measured by means of nitrogen adsorption.

Airflow resistance

The adsorption segment 52 has an airflow resistance of 5 mmH₂O or less. Satisfying delivery is achieved by virtue of the adsorption segment 52 having this airflow resistance. From this perspective, an upper limit value of the airflow resistance is preferably 3 mmH₂O or less. Furthermore, there is no limitation as to the lower limit value of the airflow resistance, but it is preferably 1 mmH₂O or greater. The airflow resistance is measured by means of a filter quality measurement gauge (trade name: SODIMAX, manufactured by SODIM). Specifically, the airflow resistance is measured as a pressure difference (mmH₂O) between both end faces of a specimen when the specimen has been covered with an air-impermeable material (rubber, etc.) so that air does not flow in from a side face of the specimen, and air is drawn in from one end of the specimen at a flow rate of 17.5 cm³/sec.

Amount of adsorbent

An excessively large content of the adsorbent in the adsorption segment 52 makes manufacturing more difficult. On the other hand, the vapor phase components are not sufficiently removed if the content of the adsorbent is excessively small. From this perspective, the content of the adsorbent is expressed as an amount per longitudinal length of the adsorption segment, with the value thereof being 4-10 (mg/mm). This amount is more preferably 4.5-6.5 (mg/mm), and even more preferably 5-6 (mg/mm).

Dimensions

There is no limitation as to the length of the adsorption segment 52, but it is preferably 7-20 mm, and more preferably 10-15 mm. There is also no limitation as to the diameter of the adsorption segment 52, but it is preferably 5.5-7.5 mm.

Adsorbent-containing sheet

The adsorption segment 52 preferably comprises an adsorbent-containing sheet. An adsorbent-containing sheet is a sheet in which an adsorbent is supported in a sheet substrate.
The adsorbent-containing sheet preferably comprises pulp as a matrix. Pulp is an aggregate of cellulose fibers extracted by mechanical or chemical treatment of a plant raw material. The plant raw material is preferably wood.
The adsorbent-containing sheet preferably comprises synthetic fibers in addition to the pulp. Polyester fibers may be cited as synthetic fibers. The polyester constituting the polyester fibers comprises a diol residue and a diacid residue. The diol residue preferably comprises an alkylene glycol residue with a 2-4 carbon chain, and more preferably comprises an ethylene glycol residue. The diacid residue preferably comprises a terephthalic acid, isophthalic acid, or phthalic acid residue, and more preferably comprises a terephthalic acid residue. Such a polyester may be represented by the formula below. In the formula, n represents a number of repetitions, and m represents an integer of 2-4. In particular, polyesters comprising an alkylene glycol residue with a 2-4 carbon chain, or an isophthalic acid or phthalic acid residue do not have an excessively high degree of crystallization and therefore improve adhesion between the polyester fibers and adsorbent particles.
The adsorbent-containing sheet preferably comprises a binder. The binder enhances adhesion among the fibers and also enhances adhesion between the fibers and the adsorbent. A well-known binder may be used, examples of which include polyvinyl alcohol and vinyl acetate, etc.
The adsorbent-containing sheet preferably has the following characteristics, and the blending amount of the components above may be appropriately adjusted so that these characteristics can be achieved.

Tensile strength (ISO 1924-2): 5-30 N/15 mm, more preferably 10-20 N/15 mm
Basis weight (ISO 536): 50-100 g/m², more preferably 70-90 g/m²
Thickness: 100-300 µm, more preferably 150-250 µm
Iodine adsorption capacity (JIS K 1474): 300-2000 mg/g, more preferably 500-1500 mg/g
Air permeability: lower limit value 300 CU or greater, preferably 500 CU or greater, more preferably 1000 CU or greater. Upper limit value 30,000 CU or less, preferably 10,000 CU or less, more preferably 2000 CU or less.

The air permeability (units: CORESTA units (CU)) is the air permeation flow rate (cm³) in 1 minute per 1 cm² under conditions of a differential pressure of 1 kPa. The air permeability may be measured by using an air permeability meter PPM1000M manufactured by Cerulean.
The effective surface area of the adsorbent in an adsorbent-containing sheet of 1 m² is preferably 5000-70,000 m²/m². The effective surface area is the total surface area of the adsorbent exposed on the sheet surface. This numerical value range is based on the following.
In one mode, the area of the adsorbent embedded in the sheet is considered on average to be 30%-50% of the surface area of one adsorbent. That is to say, the exposed area of the adsorbent is on average 50%-70%. If the surface area of the adsorbent is assumed to be 1000 m²/g, and the content of the adsorbent in the sheet is assumed to be 10 g/m², then the effective surface area when the exposed area averages 50% is calculated as follows. $10 g / m^{2} \times 1000 m^{2} / g \times 50 % = 5000 m^{2} / m^{2}$
If the surface area of the adsorbent is assumed to be 2000 m²/g, and the content is assumed to be 50 g/m², then the effective surface area when the exposed area averages 70% is calculated as follows. $50 g / m^{2} \times 2000 m^{2} / g \times 70 % = 70, 000 m^{2} / m^{2}$
In one mode, the adsorbent-containing sheet is not surface treated. Furthermore, in another mode, the adsorbent-containing sheet is surface treated. Known treatments may be cited as surface treatments, with crimping being preferred. Crimping refers to a treatment in which wrinkles are formed in a sheet. Crimping allows the adsorbent-containing sheet to be easily shaped into the form of a rod, as will be described later. At the same time, the airflow resistance increases if the crimping depth is excessively large. From this perspective, the crimping depth is preferably 0.2 mm or less, more preferably 0.1 mm or less, and even more preferably 0.03 mm or less. There is no limitation as to the lower limit value, but it is preferably 0.01 mm or greater.
In one mode, the adsorption segment 52 is packed with the adsorbent-containing sheet. The adsorbent-containing sheet preferably has a width of 150 mm or less. The width is a direction parallel to the short-side direction of the heat-not-burn flavor inhalation article 10. Fig. 2 shows the outline of the adsorption segment 52. In the drawing, 520 is an adsorbent-containing sheet, 522 is a wrapper, and W is the width. The adsorbent-containing sheet 520 is folded and packed inside the wrapper 522. The number of adsorbent-containing sheets 520 is adjusted, as appropriate, and there are preferably one or two of these sheets. The airflow resistance is easily achieved when the adsorbent-containing sheet has this width. From this perspective, the upper limit value of the width W is preferably 130 mm or less, and more preferably 110 mm or less. Furthermore, the lower limit value thereof is preferably 70 mm or greater, more preferably 80 mm or greater, and even more preferably 90 mm or greater. The length of the adsorbent-containing sheet 520 is preferably the same as the length of the adsorption segment 52. There is no limitation as to the thickness of the adsorbent-containing sheet 520, but it is preferably 150-250 µm.
A well-known material may be used for the wrapper 522. The wrapper is preferably formed by paper from the perspective of availability, etc. The hardness of the adsorption segment can be maintained especially when paper having a large basis weight is used. From this perspective, the basis weight of the wrapper 522 is preferably 50 gsm (g/m²) or greater, and more preferably 60 gsm (g/m²) or greater. There is no limitation as to the upper limit thereof, but it is preferably 80 gsm or less.

Cross-sectional void ratio

The cross-sectional void ratio Z of the adsorption segment 52 is preferably greater than 30%, more preferably 32% or greater, and even more preferably 35% or greater. A low airflow resistance can be achieved when the cross-sectional void ratio Z is in this range. However, the adsorption capability is no longer adequate if the cross-sectional void ratio Z is excessively high. The upper limit value thereof is therefore preferably 70% or less, more preferably 55% or less, and even more preferably 45% or less. The cross-sectional void ratio Z is defined by: total area of voids in cross section of adsorption segment 52/cross-sectional area of adsorption segment 52 (excluding the area of the wrapper). The cross-sectional void ratio Z is obtained by observation and image analysis of the cross section of the adsorption segment 52. Preferably, between one and three cross sections are observed, and the average of Z taken from those cross sections is assumed to be the cross-sectional void ratio of that segment.

Method for producing adsorption segment

As mentioned above, the adsorption segment 52 is preferably produced by a method comprising a step 1 of preparing the adsorbent-containing sheet, and a step 2 of packing the sheet in a cylindrical wrapper.
Step 1 may be carried out by a well-known method using the components indicated above. For example, a slurry containing a mixture of the components above can be prepared, and this can be formed into paper to produce a paper sheet. Furthermore, a cast sheet can be produced by casting this slurry onto a substrate.
Step 2 can also be carried out by a well-known method. For example, step 2 can be carried out by packing a folded adsorbent-containing sheet or by packing a cut adsorbent-containing sheet inside the cylindrical wrapper. Alternatively, the adsorption segment can be produced by folding the adsorbent-containing sheet and shaping it into a columnar form, then wrapping the shaped sheet with the wrapper. A step of subjecting the adsorbent-containing sheet to the abovementioned surface treatment may be provided before step 2.

2) Mouthpiece-side segment

The mouthpiece-side segment 51 may be a filter which is normally used in this field, and may be a solid acetate filter or paper filter. In another mode, the mouthpiece-side segment 51 may also be omitted. The length of the mouthpiece-side segment 51 is preferably 5-10 mm. The diameter of the mouthpiece-side segment 51 should be the same as that of the adsorption segment 52.

3) Upstream-side segment

Fig. 3 shows a mode in which the mouthpiece 5 is formed by three segments. In the drawing, 53 is an upstream-side segment. The upstream-side segment 53 may be formed by any member but is preferably a center hole filter. The upstream-side segment 53 being a center hole filter allows the high-rigidity upstream-side segment 53 and mouthpiece-side segment 51 to be placed on both sides of the adsorption segment 52 which has relatively low rigidity, therefore improving the strength of the heat-not-burn flavor inhalation article 10. Furthermore, the positions of the upstream-side segment 53 and the adsorption segment 52 can also be swapped, but the mode shown in fig. 3 is preferred from the perspective of avoiding excessive adsorption. The length of the upstream-side segment 53 is preferably 5-10 mm. The diameter of the upstream-side segment 53 should be the same as that of the adsorption segment 52.

(2) Tobacco member

The tobacco member is a substantially cylindrical member for generating a smoking flavor component contained in a tobacco raw material. The tobacco member comprises a tobacco material and a wrapping paper (wrapper) wrapped around the tobacco material. There is no limitation as to the shape of the tobacco material packed inside the wrapping paper, and examples of shapes which may be cited include a sheet, a cut material obtained by cutting this sheet into widths of 0.8-1.2 mm, and shreds which have been cut to a width of 0.8-1.2 mm, etc. The tobacco member may also be obtained by packing the wrapping paper with the sheet which has been gathered, folded or rolled, rather than being cut. Furthermore, the tobacco member may also be obtained by packing the wrapping paper with the sheet which has been shredded into short strip shapes, either concentrically or so that the longitudinal direction of the short strips is parallel to the longitudinal direction of the tobacco member.
There is no particular limitation as to the packing density of the tobacco material, but it is normally 200 mg/cm³ or greater, and preferably 250 mg/cm³, from the perspective of ensuring the characteristics of the heat-not-burn flavor inhalation article and imparting a pleasant smoking flavor. Furthermore, the upper limit of the packing density is normally 800 mg/cm³ or less, and preferably 600 mg/cm³ or less. There is no limitation as to the length of the tobacco length member, but it is preferably 10-25 mm. There is also no limitation as to the diameter thereof, but it is preferably 6-8 mm.
The tobacco material may generate a vapor as it is heated. There is no limitation as to the heating temperature, but it is normally around 30-400°C. An aerosol source such as a polyol, including glycerol, propylene glycol or 1,3-butanediol, may be added to the tobacco material in order to promote aerosol generation. The amount of aerosol source which is added is preferably 5-50 wt%, and more preferably 10-30 wt% with respect to the dry weight of the tobacco material. Well-known flavoring materials, etc. may also be added to the tobacco material.

(2) Cooling member

The cooling member 3 is adjacently downstream of the tobacco member 1. Downstream refers to the direction toward the mouthpiece end. The cooling member 3 is a member for promoting aerosol formation by cooling the smoking flavor component and vapor generated by the tobacco material. The cooling member may be a hollow paper tube. The paper tube is preferably formed by cardboard having higher rigidity than the wrapping paper and tipping paper. Ventilation holes V (openings) may be provided in the paper tube. Multiple ventilation holes are preferably provided along the circumference of the paper tube. The cooling member may furthermore be packed with a gathered sheet in order to improve heat exchange efficiency. There is no limitation as to the dimensions of the cooling member, but it preferably has a length of 10-25 mm and preferably has a diameter of 5.5-7.5 mm. The flavor generated from the tobacco member 1 is sufficiently cooled by the cooling member 3, and a particle phase (aerosol) and a vapor phase are therefore generated. The adsorption segment 52 can therefore selectively remove components in the vapor phase. If the flavor generated from the tobacco member 1 is introduced into the adsorption segment 52 without passing through the cooling member 3, components which should not be removed may be removed.

2. Heat-not-burn flavor inhalation system

A combination of a heat-not-burn flavor inhalation article and a heating unit is also referred to as a heat-not-burn flavor inhalation system. Fig. 4 shows one mode of such a system. In the drawing, 100 is a heat-not-burn flavor inhalation system, 10 is a heat-not-burn flavor inhalation article, and 30 is a heating unit comprising a heater. The heating unit comprises a heater, a housing, and a power source, etc.
The heater preferably electrically heats the tobacco member 1. The heater may be a type of heater which heats the tobacco member 1 from the outer circumference thereof, or may be a type of heater which is inserted into the tobacco member 1 and heats the tobacco member 1 from the inside.
Furthermore, the heat-not-burn flavor inhalation system may be a system employing induction heating (IH). In this mode, the heating unit 30 is configured by an induction coil. The heating unit is normally disposed at the outer circumference of the tobacco member 1. The tobacco member 1 may then include a susceptor which is heated by means of a magnetic field generated by energization of the induction coil.
Embodiments are disclosed below.

Aspect 1

Aspect 2

Aspect 3

Aspect 4

Aspect 5

Aspect 6

Aspect 7

Aspect 8

EXAMPLES

Examples and Comparative Examples

The heat-not-burn flavor inhalation article shown in fig. 1 was prepared. The mouthpiece configuration was as shown in Table 1. For example, the mouthpiece of Comparative Example 2 had a CH/CF/AF structure in the downstream direction, and the mouthpiece of Example 1 had a CS/AF structure in the downstream direction. The diameter of the mouthpiece was 7 mm.

Table 1

Lot		Mouthpiece configuration (numbers are length in mm)					Amount of activated charcoal		Sheet width	Sheet crimping depth	Airflow resistance
Lot		CH	CF	CS	HCS	AF	mg/stic	mg/mm	mm	mm	mmH₂O seg
1	Comparative Example 1	12				8	0	0.0			-
2	Comparative Example 2	6	7			7	20	2.9			16.8
3	Example 1			12		8	61	5.1	95	0.03	1.4
4	Example 2			12		8	61	5.1	95	0.10	2
5	Example 3				12	8	66	5.5	95	0.03	1.5
6	Example 4				12	8	66	5.5	95	0.10	2.3
7	Example 5			12		8	68	5.7	105	0.03	2.1
8	Example 6			12		8	68	5.7	105	0.10	4.2
9	Comparative Example 3				12	8	90	7.5	130	0.10	12.6
10	Example 7				12	8	73	6.1	105	0.20	3.6

CH: Center hole filter
CF: Charcoal filter
CS: Activated charcoal-containing sheet (activated charcoal basis weight 54 g/m²)
HCS: Activated charcoal-containing sheet (activated charcoal basis weight 58 g/m²)
AF: Acetate filter
Sheet width: Width of activated charcoal-containing sheet
Airflow resistance: Airflow resistance of segment containing activated charcoal

The tobacco member-side end of the heat-not-burn flavor inhalation article was inserted into the heating device shown in fig. 4. The heater temperature was set at 295°C and the tobacco member was heated by this heater. A Cambridge filter (CM-133, manufactured by Borgwaldt KC Inc.), and an impinger containing a DNPH (2,4-dinitrophenylhydrazine) solution were placed at the mouthpiece end side of this article, and a smoking test was carried out using a smoking machine. Specifically, samples were automatically smoked using an automatic smoking machine (LM-1, manufactured by Borgwaldt KC Inc.) under conditions of smoking volume 27.5 ml/second, smoking time 2 seconds/puff, smoking frequency 2 puffs/minute, and 10 puffs.
Nicotine and glycerol were analyzed by the following method. Analysis specimens were obtained by shaking the Cambridge filter following the smoking test in 10 mL of methanol (manufactured by Wako Pure Chemical Industries, Ltd.; special grade chemical). 1 µL of the analysis specimens obtained was collected in a microsyringe, and the specimens were analyzed in a gas chromatograph mass spectrometer (GC-MSD, GC: 7890A, MS: 5975C; manufactured by Agilent).
Acetaldehyde and acrolein in the carbonyl components were analyzed by the following method. The Cambridge filter following the smoking test was soaked in the liquid trapped by the impinger and shaken, then solids were filtered using a membrane filter. A predetermined quantity of the filtrate was added to a Trizma base solution and further shaken to stop a derivatization reaction. The solution was once again filtered through the membrane filter, and the carbonyl components were analyzed by HPLC-DAD. See the disclosure of WO 2004/026054 A1, and CORESTA Recommended Method No. 96 - Determination of Formaldehyde and Acetaldehyde in E-Vapour Product Aerosol, February 2021 , for the method of analyzing the carbonyl components.
The results are shown in fig. 5 and 6. Fig. 5 is a diagram comparing nicotine and glycerol delivery, with Comparative Example 2 as a reference. A considerable reduction in nicotine and glycerol delivery was apparent in Comparative Example 3, but an increase was apparent in the Examples. For example, a 10% increase in glycerol delivery was apparent in Example 1 as compared to Comparative Example 2. Fig. 6 is a diagram comparing acetaldehyde, acetone and acrolein delivery, with Comparative Example 1 as a reference. A considerable reduction in acetaldehyde, acetone and acrolein delivery was apparent in the Examples and Comparative Example 3. It was clear from the above that the heat-not-burn flavor inhalation articles according to the Examples selectively deliver the particle phase.

REFERENCE SIGNS LIST

10 Heat-not-burn flavor inhalation article
1 Tobacco member
3 Cooling member
5 Mouthpiece
51 Mouthpiece-side segment
52 Adsorption segment
53 Upstream-side segment
V Ventilation hole
100 Heat-not-burn flavor inhalation system
30 Heating unit comprising heater
520 Adsorbent-containing sheet
522 Wrapper

Claims

A non-combustion flavor inhalation article comprising a tobacco member, a cooling member, and a mouthpiece, wherein
the mouthpiece comprises an adsorption segment containing an adsorbent,

the adsorption segment has an airflow resistance of 5 mmH₂O or less, and

an amount of the adsorbent is 4-10 (mg/adsorption segment longitudinal length mm).
The non-combustion flavor inhalation article as claimed in claim 1, wherein the adsorption segment comprises an adsorbent-containing sheet.
The non-combustion flavor inhalation article as claimed in claim 1 or 2, wherein the adsorbent is activated charcoal.
The non-combustion flavor inhalation article as claimed in claim 2 or 3, wherein the sheet comprises pulp.
The non-combustion flavor inhalation article as claimed in any of claims 1 to 4, wherein, taking a short-side direction of the non-combustion flavor inhalation article as the width,
the adsorption segment is packed with a sheet having a width of 150 mm or less.
The non-combustion flavor inhalation article as claimed in any of claims 1 to 5, wherein the adsorption segment comprises a wrapper having a basis weight of 50 gsm (g/m²) or greater.
The non-combustion flavor inhalation article as claimed in any of claims 1 to 6, wherein the mouthpiece further comprises a mouthpiece-side segment disposed downstream of the adsorption segment.
The non-combustion flavor inhalation article as claimed in any of claims 1 to 7, wherein the adsorption segment has a cross-sectional void ratio of greater than 30%.