Non-combustion heating type stick and suction system

Abstract

To provide a non-combustion heating type stick capable of increasing an aerosol amount that can be supplied to an oral cavity.SOLUTION: A non-combustion heating type stick includes: a base material part including an aerosol source; a cylindrical cooling part that cools steam generated by the base material part being heated and generates aerosol; and a filter part through which the aerosol passes. The cooling part has an aperture through which air flows in from the outside to the inside. The aperture is formed at a position of equal to or greater than 7 mm from a boundary between the cooling part and the filter part and equal to or greater than 8 mm from a boundary between the cooling part and the base material part.SELECTED DRAWING: Figure 2

Description

[Technical Field]

[0001] The present invention relates to a non-combustion heating stick and suction system. [Background technology]

[0002] For example, the smoking article described in Patent Document 1 includes a body made of smoking material and a filter assembly. The filter assembly includes a cooling segment, a filter segment adjacent to the cooling segment, and a mouth end segment that is received in a user's mouth. The smoking article is configured such that, when the smoking material is fully inserted into the device, a first portion of the cooling segment is within the device and a second portion of the cooling segment extends outside the device. The second portion of the cooling segment includes a ventilation area that allows air to flow into the cooling segment and mix with at least one volatilized component of the smoking material. In addition, the non-combustion heated smoking article described in Patent Document 2 comprises a tobacco-containing segment containing tobacco and an aerosol-generating substrate, a cylindrical cooling segment having perforations on its circumference, and a cylindrical member having an inner diameter smaller than that of the cooling segment, the end of the cooling segment facing the mouthpiece being joined to the member, and the perforations being located 2 to 4 mm from the joining surface. [Prior art documents] [Patent documents]

[0003] [Patent Document 1] Special Publication No. 2019-518450 [Patent Document 2] International Publication No. 2020-100927 Summary of the Invention [Problem to be solved by the invention]

[0004] In an inhalation device that generates an aerosol by heating a substrate containing an aerosol source, it is preferable to use the limited energy supplied for heating to increase the amount of aerosol that can be delivered to the user's oral cavity. The present disclosure aims to provide a non-combustion heating stick or the like that can increase the amount of aerosol that can be supplied to the oral cavity. [Means for solving the problem]

[0005] The present disclosure, which was completed with this objective in mind, is a non-combustion heating stick comprising a substrate containing an aerosol source, a cylindrical cooling section that cools the vapor generated by heating the substrate to generate an aerosol, and a filter section through which the aerosol passes, wherein the cooling section has an opening that allows air to flow from the outside to the inside, the opening being formed at a position 7 mm or more from the boundary between the cooling section and the filter section and 8 mm or more from the boundary between the cooling section and the substrate. From another perspective, the present disclosure is a non-combustion heating stick comprising a substrate portion containing an aerosol source, a cylindrical cooling portion that cools vapor generated by heating the substrate portion to generate an aerosol, and a filter portion through which the aerosol passes, wherein the cooling portion has an opening that allows air to flow from the outside to the inside, the opening being formed at a position 7 mm or more from the end of the cooling portion on the filter portion side and 8 mm or more from the end of the cooling portion on the substrate portion side. Here, the packing density of the aerosol source is 300 mg / cm 3 It may be more than that. The size of the cooling portion in the center line direction may be 15 mm or more and 35 mm or less. The diameter of the filter portion may be 5.0 mm or more and 8.0 mm or less. The size of the filter portion in the center line direction may be 10 mm or more and 30 mm or less. Furthermore, two or more of the openings may be formed in the center line direction. The food processor may also have tipping paper wound around at least the cooling section and the filter section to integrate them together, and a portion of the outer surface of the tipping paper may be covered with a lip release material. The water content of the aerosol source may be 10% by mass or more and 15% by mass or less with respect to the total amount of the aerosol source. Also, from another perspective, the present disclosure is a suction system comprising the above-mentioned non-combustion heating type stick, a suction device having a holding part that holds the non-combustion heating type stick, and a heating part that heats the base part, wherein the holding part forms a gap between the inner surface and the outer surface of the non-combustion heating type stick while holding the non-combustion heating type stick. [Effects of the Invention]

[0006] According to the present disclosure, the amount of aerosol that can be supplied into the oral cavity can be increased. [Brief explanation of the drawings]

[0007] [Figure 1] 1 is a diagram schematically illustrating an example of a schematic configuration of a suction system according to a first embodiment. [Figure 2] FIG. 2 is a diagram showing an example of a vertical cross section of the stick according to the first embodiment. [Figure 3] FIG. 2 is a diagram illustrating an example of a schematic configuration of a holding unit. [Figure 4] 4 is a diagram showing an example of a cross section taken along line IV-IV in FIG. 3. FIG. [Figure 5] 5A is a diagram showing an example of a cross section taken along line Va-Va in FIG. 4. FIG. 5B is a diagram showing an example of a cross section taken along line Vb-Vb in FIG. [Figure 6] FIG. 10 is a diagram showing an example of air flow during suction in the suction system. [Figure 7] FIG. 10 is a diagram showing a vertical cross section of a stick according to a second embodiment. DETAILED DESCRIPTION OF THE INVENTION

[0008] DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS Hereinafter, embodiments of the present invention will be described in detail with reference to the accompanying drawings, in which the same reference numerals are used to denote the same parts.

[0009] First Embodiment FIG. 1 is a diagram schematically illustrating an example of a schematic configuration of a suction system 1 according to the first embodiment. FIG. 2 is a diagram showing an example of a vertical cross section of the stick 2 according to the first embodiment. The inhalation system 1 includes a non-combustion heating stick (hereinafter sometimes referred to as a "stick") 2 having an aerosol source that generates aerosol when heated, and an inhalation device 100 that generates aerosol by heating the stick 2.

[0010] (Stick 2) The stick 2 includes a substrate 10, a cooling section 20, and a filter section 30. The substrate 10 is cylindrical. Hereinafter, the direction of the center line CL of the substrate 10 may be referred to as the "center line direction." The stick 2 further includes tipping paper 40, which integrates the substrate 10, the cooling section 20, and the filter section 30 by winding them in this order in the center line direction. Hereinafter, one end side in the center line direction (the left side in FIG. 2 ) may be referred to as the first side, and the other end side in the center line direction (the right side in FIG. 2 ) may be referred to as the second side. The first side is the end side that is inserted into the suction device 100. The second side is the opposite side to the first side, and is the end side that the user holds in their mouth for suction. Furthermore, a cross section along the center line direction is referred to as a "longitudinal cross section," and a cross section cut along a plane perpendicular to the center line direction is defined as a "transverse cross section."

[0011] [Base material part 10] The substrate 10 includes an aerosol source 11 that generates vapor that generates an aerosol when heated, and a cigarette paper 12 that wraps around the aerosol source 11. The substrate 10 is formed into a cylindrical shape by wrapping the aerosol source 11 around the cigarette paper 12. The aerosol source 11 may be derived from tobacco, such as a processed product obtained by molding tobacco shreds or tobacco raw materials into granules, sheets, or powder. The aerosol source 11 may also include a non-tobacco-derived material made from plants other than tobacco (e.g., mint and herbs). As an example, the aerosol source 11 may contain a flavoring. The type of flavoring is not particularly limited, and menthol is particularly preferred from the viewpoint of imparting a favorable flavor. These flavorings may be used alone or in combination of two or more types. When the inhalation device 100 is a medical inhaler, the aerosol source 11 may contain a medication to be inhaled by the patient. The aerosol source 11 is not limited to a solid, and may be a liquid such as water or a polyhydric alcohol such as glycerin or propylene glycol. The base member 10 is accommodated in the internal space of the holder 130 when the stick 2 is held by the holder 130.

[0012] The substrate 10 formed by wrapping the aerosol source 11 in the wrapping paper 12 preferably has a cylindrical shape that satisfies the aspect ratio defined by the following formula (1) of 1 or more. Aspect ratio = h / w (1) w is the width of the cross section of the substrate 10, h is the size of the substrate 10 in the center line direction, and it is preferable that h≧w. The shape of the cross section is not limited and may be polygonal, rounded polygonal, circular, elliptical, etc., and the width w is the diameter when the cross section is circular, the major axis when the cross section is elliptical, or the diameter of the circumscribing circle or the major axis of the circumscribing ellipse when the cross section is polygonal or rounded polygonal. The width of the cross section of the aerosol source 11 constituting the substrate 10 is preferably 4 mm or more and 9 mm or less.

[0013] The size h of the substrate 10 in the center line direction can be changed appropriately 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 even more preferably 18 mm or more. The size h of the substrate 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, the ratio of the size h of the substrate 10 to the size of the stick 2 in the center line direction is not particularly limited, but from the viewpoint of the balance between the delivery amount and the aerosol temperature, it is usually 10% or more, preferably 20% or more, more preferably 25% or more, and even more preferably 30% or more. In addition, the ratio of the size h of the substrate 10 to the size of the stick 2 is usually 80% or less, preferably 70% or less, more preferably 60% or less, even more preferably 50% or less, particularly preferably 45% or less, and most preferably 40% or less.

[0014] The content of the aerosol source 11 in the substrate 10 is not particularly limited, but may be 200 mg to 800 mg, and preferably 250 mg to 600 mg. This range is particularly suitable for a substrate 10 having a circumference of 22 mm and a size of 20 mm in the centerline direction.

[0015] Here, the aerosol source 11 containing tobacco shreds will be described. The material of the tobacco shreds contained in the aerosol source 11 is not particularly limited, and known materials such as lamina or ribs can be used. Alternatively, the aerosol source 11 may be a shredded tobacco product obtained by pulverizing dried tobacco leaves to an average particle size of 20 μm to 200 μm, homogenizing the shredded tobacco, and processing it into a sheet (hereinafter simply referred to as a homogenized sheet). Furthermore, the aerosol source 11 may be a so-called strand type, in which a homogenized sheet having a size similar to the size of the substrate 10 in the center line direction is shredded approximately parallel to the center line direction of the substrate 10 and filled with the homogenized sheet. Furthermore, the width of the tobacco shreds is preferably 0.5 mm or more and 2.0 mm or less when filling aerosol source 11.

[0016] Various types of tobacco can be used for the production of shredded tobacco and homogenized sheets. Examples include flue-cured tobacco, burley, oriental, native tobacco, other Nicotiana tabacum varieties, Nicotiana rustica varieties, and mixtures thereof. Mixtures can be appropriately blended to achieve the desired flavor. Details of tobacco varieties are disclosed in the "Encyclopedia of Tobacco," Tobacco Research Center, March 31, 2009. There are several conventional methods for producing homogenized sheets, i.e., grinding tobacco leaves and processing them into homogenized sheets. The first method is to produce a paper-making sheet using a papermaking process. The second method involves mixing a suitable solvent, such as water, with ground tobacco leaves to homogenize them, then casting a thin layer of the homogenized material onto a metal plate or metal belt and drying it to produce a cast sheet. The third method involves mixing a suitable solvent, such as water, with ground tobacco leaves to homogenize them, and then extruding the mixture into a rolled sheet. Details of the types of homogenizing sheets are disclosed in "Encyclopedia of Tobacco, Tobacco Research Center, March 31, 2009."

[0017] The moisture content of the aerosol source 11 can be 10% by mass or more and 15% by mass or less, and is preferably 11% by mass or more and 13% by mass or less, based on the total amount of the aerosol source 11. Such a moisture content suppresses the occurrence of stains during rolling and improves the suitability for rolling up during the production of the base material 10.

[0018] The aerosol source 11 is not particularly limited and may contain extracts and / or components thereof from various natural products depending on the intended use. Examples of extracts and / or components thereof include glycerin, propylene glycol, triacetin, 1,3-butanediol, and mixtures thereof. The content of the extract and / or its constituent components in aerosol source 11 is not particularly limited, but from the viewpoint of generating sufficient aerosol and imparting a good flavor, it is usually 5% by mass or more, and preferably 10% by mass or more, relative to the total amount of aerosol source 11. Moreover, the content of the extract and / or its constituent components in aerosol source 11 is usually 50% by mass or less, and preferably 15% by mass or more and 25% by mass or less.

[0019] The packing density of the aerosol source 11 is not particularly limited, but is usually 250 mg / cm from the viewpoint of ensuring the performance of the stick 2 and imparting a good flavor. 3 or more, preferably 300 mg / cm 3 The packing density of the aerosol source 11 is usually 400 mg / cm 3 or less, preferably 350 mg / cm 3 The following is the result.

[0020] The aerosol source 11 may also be made up of a tobacco sheet. The number of tobacco sheets may be one, or two or more.

[0021] When the aerosol source 11 is composed of a single tobacco sheet, for example, the tobacco sheet may be folded multiple times parallel to the centerline of the filling material (so-called gathered sheet), or may be packed in a manner in which the tobacco sheet has one side approximately the same size as the centerline of the filling material and is wound in a direction perpendicular to the centerline of the filling material.

[0022] In the case where the aerosol source 11 is composed of two or more tobacco sheets, for example, a plurality of tobacco sheets, each having a side approximately the same size as the centerline of the filling material, are wound in a direction perpendicular to the centerline of the filling material so as to be concentrically arranged. "Concentrically arranged" means that the centers of all the tobacco sheets are positioned at approximately the same position.

[0023] Two or more tobacco sheets may all have the same composition or physical properties, or some or all of the tobacco sheets may have different compositions or physical properties. Furthermore, the thicknesses of the tobacco sheets may be the same or different. There are no restrictions on the thickness of each tobacco sheet, but in terms of the balance between heat transfer efficiency and strength, it is preferably 150 μm or more and 1000 μm or less, and more preferably 200 μm or more and 600 μm or less.

[0024] The aerosol source 11 can be manufactured by preparing a plurality of tobacco sheets of different widths, stacking them so that the width decreases from the first side to the second side to prepare a laminate, and passing this through a winding tube to roll up and form it. According to this manufacturing method, a plurality of tobacco sheets extend in the center line direction and are arranged concentrically around the CL.

[0025] In this manufacturing method, the laminate is preferably prepared so that non-contact portions are formed between adjacent tobacco sheets after rolling. The presence of non-contact portions (gaps) between multiple tobacco sheets where the tobacco sheets do not come into contact ensures flavor flow paths and improves the delivery efficiency of flavor components. On the other hand, heat from the heating unit 121 can be transferred to the outer tobacco sheets via the contact portions between the multiple tobacco sheets, ensuring high heat transfer efficiency. In order to provide non-contact portions between multiple tobacco sheets where the tobacco sheets do not come into contact, examples of methods for preparing a laminate include using embossed tobacco sheets, laminating adjacent tobacco sheets without bonding the entire surfaces of the sheets together, laminating adjacent tobacco sheets with only a portion of the sheets bonded together, or laminating adjacent tobacco sheets with only a light bonding of the entire surfaces or a portion of the sheets together so that they can be peeled off after rolling and molding. When preparing the substrate part 10 including the wrapping paper 12, the wrapping paper 12 may be disposed on the end face of the first side of the laminate.

[0026] The packing density of the aerosol source 11 is not particularly limited, but is usually 250 mg / cm from the viewpoint of ensuring the performance of the stick 2 and imparting a good flavor. 3 or more, preferably 300 mg / cm 3 The packing density of the aerosol source 11 is usually 400 mg / cm 3 or less, preferably 350 mg / cm 3 The following is the result.

[0027] Polyols such as glycerin, propylene glycol, and 1,3-butanediol may be added to the tobacco sheet. The amount of polyol added to the tobacco sheet is preferably 5% by mass or more and 50% by mass or less, and more preferably 15% by mass or more and 25% by mass or less, based on the dry mass of the tobacco sheet.

[0028] The tobacco sheet can be appropriately produced by known methods such as paper making, slurry, rolling, etc. The above-mentioned homogenized sheet can also be used. In the case of papermaking, it can be produced by a method including the following steps: 1) Dry tobacco leaves are roughly crushed and extracted with water to separate the water extract and residue. 2) The water extract is dried and concentrated under reduced pressure. 3) Pulp is added to the residue, which is then fiberized in a refiner and made into paper. 4) A concentrated solution of the water extract is added to the paper-made sheet and dried to produce a tobacco sheet. In this case, a step of removing some components such as nitrosamines may be added (see JP 2004-510422 A). In the case of the slurry method, tobacco can be produced by a method including the following steps: 1) Mixing water, pulp, a binder, and crushed tobacco leaves; 2) Spreading (casting) the mixture thinly and drying it. In this case, an additional step may be added in which the slurry of water, pulp, a binder, and crushed tobacco leaves is irradiated with ultraviolet light or X-rays to remove some of the components such as nitrosamines.

[0029] Alternatively, as described in WO 2014 / 104078, a nonwoven tobacco sheet can be used, which is produced by a method including the following steps: 1) mixing powdered tobacco leaves with a binder; 2) sandwiching the mixture between nonwoven fabrics; and 3) molding the laminate into a fixed shape by heat welding to obtain a nonwoven tobacco sheet. The type of tobacco leaf material used in each of the above methods can be the same as that described for the aerosol source 11 containing shredded tobacco. The composition of the tobacco sheet is not particularly limited, but for example, the content of tobacco raw materials (tobacco leaves) is preferably 50% by mass or more and 95% by mass or less relative to the total mass of the tobacco sheet. The tobacco sheet may also contain a binder, such as guar gum, xanthan gum, carboxymethyl cellulose, or sodium salt of carboxymethyl cellulose. The amount of binder is preferably 1% by mass or more and 10% by mass or less relative to the total mass of the tobacco sheet. The tobacco sheet may further contain other additives, such as fillers such as pulp.

[0030] The configuration of the cigarette paper 12 used in the substrate 10 is not particularly limited and can be any common embodiment, for example, one whose main component is pulp. The pulp may be made from wood pulp such as softwood pulp or hardwood pulp, or may be made by mixing non-wood pulp that is generally used in cigarette papers 12 for tobacco products, such as flax pulp, hemp pulp, sisal pulp, or esparto. Usable types of pulp include chemical pulp produced by kraft cooking, acidic, neutral or alkaline sulfite cooking, soda cooking, etc., ground pulp, chemi-ground pulp, thermomechanical pulp, etc.

[0031] Pulp is used in a papermaking process using a Fourdrinier paper machine, a cylinder paper machine, a combined cylinder / short-cylinder paper machine, or the like to adjust and homogenize the texture of the cigarette paper 12. If necessary, a wet strength agent can be added to impart water resistance to the cigarette paper 12, or a sizing agent can be added to adjust the printing quality of the cigarette paper 12. Furthermore, internal papermaking aids such as aluminum sulfate, various anionic, cationic, nonionic, or amphoteric retention aids, drainage aids, and paper strength agents, as well as papermaking additives such as dyes, pH adjusters, antifoaming agents, pitch control agents, and slime control agents, can be added.

[0032] The basis weight of the base paper for the cigarette paper 12 is, for example, usually 20 gsm or more, preferably 25 gsm or more, while the basis weight is usually 65 gsm or less, preferably 50 gsm or less, and more preferably 45 gsm or less. The thickness of the cigarette paper 12 is not particularly limited, and from the viewpoints of rigidity, breathability, and ease of adjustment during papermaking, it is usually 10 μm or more, preferably 20 μm or more, and more preferably 30 μm or more. The thickness of the cigarette paper 12 is usually 100 μm or less, preferably 75 μm or less, and more preferably 50 μm or less. The shape of the wrapping paper 12 for producing the substrate 10 can be a square or a rectangle.

[0033] When used as the wrapping paper 12 for wrapping the aerosol source 11, the length of one side can be approximately 12 mm to 70 mm, and the length of the other side can be approximately 15 mm to 28 mm, with the other side preferably being 22 mm to 24 mm, and more preferably being approximately 23 mm. When wrapping the aerosol source 11 in the wrapping paper 12 in a cylindrical shape, for example, an end of the wrapping paper 12 and an end of the wrapping paper 12 opposite it can be overlapped by approximately 2 mm in the circumferential direction and glued together to form a cylindrical paper tube shape in which the aerosol source 11 is filled. The size of the rectangular wrapping paper 12 can be determined depending on the size of the base material 10.

[0034] In addition to the above pulp, a filler may be contained in the cigarette paper 12. The content of the filler relative to the total mass of the cigarette paper 12 can be 10% by mass or more and less than 60% by mass, and preferably 15% by mass or more and 45% by mass or less. In the cigarette paper 12, the filler content is preferably 15% by mass or more and 45% by mass or less within the preferred range of basis weight (25 gsm or more and 45 gsm or less). Furthermore, when the basis weight is 25 gsm or more and 35 gsm or less, the filler content is preferably 15% by weight or more and 45% by weight or less, and when the basis weight is 35 gsm or more and 45 gsm or less, the filler content is preferably 25% by weight or more and 45% by weight or less. As the filler, calcium carbonate, titanium dioxide, kaolin, etc. can be used, but calcium carbonate is preferably used from the viewpoint of enhancing flavor and whiteness.

[0035] Various auxiliary agents other than the base paper and fillers may be added to the cigarette 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), etc. Examples of sizing agents include rosin soap, alkyl ketene dimer (AKD), alkenyl succinic anhydride (ASA), and highly saponified polyvinyl alcohol with a saponification degree of 90% or more. A paper strength agent may be added as an auxiliary, and examples thereof include polyacrylamide, cationic starch, oxidized starch, CMC, polyamide epichlorohydrin resin, polyvinyl alcohol, etc. In particular, it is known that the use of a very small amount of oxidized starch improves air permeability (Japanese Patent Laid-Open Publication No. 2017-218699).

[0036] A coating agent may be added to at least one of the two surfaces, the front and back surfaces, of the wrapping paper 12. There are no particular limitations on the coating agent, but a coating agent that can form a film on the surface of the paper and reduce liquid permeability is preferred. Examples of such coating agents include polysaccharides such as alginic acid and its salts (e.g., sodium salts), pectin, cellulose derivatives such as ethyl cellulose, methyl cellulose, carboxymethyl cellulose, and nitrocellulose, starch and its derivatives (e.g., ether derivatives such as carboxymethyl starch, hydroxyalkyl starch, and cationic starch, and ester derivatives such as starch acetate, starch phosphate, and starch octenyl succinate).

[0037] [Cooling section 20] The cooling section 20 is disposed adjacent to the base material section 10 and the filter section 30, and has a forming paper 21 formed into a cylindrical shape so that the cross section is hollow (hollow). The size of the cooling section 20 in the centerline direction is 15 mm or more. The size of the cooling section 20 in the centerline direction is 35 mm or less, preferably 30 mm or less, and more preferably 25 mm or less. By setting the size of the cooling section 20 in the centerline direction to be equal to or greater than the above-mentioned lower limit, a sufficient cooling effect can be ensured to obtain a good flavor, and by setting it to be equal to or less than the above-mentioned upper limit, loss due to adhesion of the generated steam and aerosol to the forming paper 21 can be suppressed.

[0038] The forming paper 21 is cylindrical, and its inner diameter can be changed as appropriate according to the size of the product, but is preferably approximately the same as the outer diameter of the aerosol source 11 of the base material 10. In other words, the inner diameter of the forming paper 21 is preferably approximately the same as the inner diameter of the wrapping paper 12. By making the inner diameter of the forming paper 21 approximately the same as the inner diameter of the wrapping paper 12, a sufficient passage path for the generated steam and aerosol can be secured, and loss due to adhesion to the forming paper 21 can be suppressed.

[0039] The thickness of the forming 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 forming paper 21 is not particularly limited, and may be, for example, a material whose main component is pulp, or a material whose main component is any of polyethylene, polypropylene, polyvinyl chloride, polyethylene terephthalate, polylactic acid, cellulose acetate, and aluminum foil, or any combination of these. Alternatively, forming paper 21 may be formed by a thin sheet of material that is wrinkled to form channels, then pleated, gathered, and folded to increase the interior surface area.

[0040] The cooling section 20 has a plurality of openings V (also referred to as "ventilation filters (Vf)" in the present technical field) arranged concentrically and circumferentially. The openings V are holes that penetrate the forming paper 21. The openings V are circular in shape. However, the openings V may have shapes other than a circle, such as a polygon, a rounded polygon, or an ellipse. The presence of the openings V allows air to flow from the outside into the forming paper 21 of the cooling section 20 during suction, thereby lowering the temperature of the steam and air flowing in from the base material section 10.

[0041] The apertures V are arranged so that the air inflow rate through the apertures V is 10% by volume or more and 90% by volume or less when an automatic smoking machine inhales at 17.5 ml / second. This "air inflow rate" is the volumetric rate of air inflowing through the apertures V when the rate of air inhaled from the mouthpiece end is taken as 100% by volume. The air inflow rate is preferably 50% by volume or more and 80% by volume or less, and more preferably 55% by volume or more and 75% by volume or less. These air inflow rates can be achieved, for example, by selecting the number of apertures V per aperture group from the range of 5 to 50, selecting the diameter of the apertures V from the range of 0.1 to 0.5 mm, and combining these selections. The air inflow ratio can be measured using a winding quality measuring device (SODIMAX D74 / SODIM manufactured by SAS) in accordance with a method conforming to ISO9512. The region where the openings V exist will be described in detail later.

[0042] [Filter section 30] The filter unit 30 has a first filter 31 connected to the second side of the cooling unit 20, a second filter 32 located on the second side of the first filter 31, and wrapping paper 33 wound around the outside of the first filter 31 and the second filter 32 to connect the first filter 31 and the second filter 32. The first filter 31 has a hollow cross section, and the second filter 32 has a solid cross section. The filter unit 30 is connected (coupled) to the cooling unit 20 by integrally winding up the end of the second side of the cooling unit 20 and the end of the first side of the filter unit 30 using tipping paper 40.

[0043] The cross section of the outer periphery of the first filter 31 and the second filter 32 of the filter unit 30 is substantially circular, and the diameter of the circle can be changed appropriately according to the size of the product, but is usually 4.0 mm to 9.0 mm, preferably 4.5 mm to 8.5 mm, and more preferably 5.0 mm to 8.0 mm. If the cross section is not circular, the above diameter is assumed to be the diameter of a circle having the same area as the cross section, and the diameter of that circle is applied.

[0044] The circumferential length of the cross section of the outer periphery of the first filter 31 and the second filter 32 can be changed as appropriate to suit the size of the product, but is usually 14.0 mm or more and 27.0 mm or less, preferably 15.0 mm or more and 26.0 mm or less, and more preferably 16.0 mm or more and 25.0 mm or less. The size of the filter unit 30 in the center line direction can be changed as appropriate according to the size of the product, but is usually 10.0 mm to 30.0 mm, preferably 12.5 mm to 27.5 mm, and more preferably 15.0 mm to 25.0 mm. The shapes and dimensions of the first filter 31 and the second filter 32 can be adjusted as appropriate so that the shape and dimensions of the filter unit 30 fall within the above ranges.

[0045] The airflow resistance per 120 mm of size in the center line direction of the filter section 30 is not particularly limited, but is usually 40 mmH2O or more and 300 mmH2O or less, preferably 70 mmH2O or more and 280 mmH2O or less, and more preferably 90 mmH2O or more and 260 mmH2O or less. The airflow resistance is measured in accordance with the ISO standard method (ISO6565) using, for example, a filter airflow resistance measuring device manufactured by Cerulean Co., Ltd. The airflow resistance of the filter unit 30 refers to the difference in air pressure between the first side and the second side when air is allowed to flow from the first side to the second side at a predetermined air flow rate (17.5 cc / min) without air permeating through the sides of the filter unit 30. The unit is generally expressed in mmH2O.

[0046] The first filter 31 and the second filter 32 are not particularly limited as long as they contain a filter material and have the general functions of a filter. Examples of general filter functions include adjusting the amount of air mixed in when inhaling aerosols, reducing flavors, and reducing nicotine and tar, but they do not need to have all of these functions. Furthermore, in the case of non-combustion heat-type sticks 2, which tend to produce fewer components and have a lower filling rate of the aerosol source 11 than cigarette products, one of their important functions is to suppress the filtering function while preventing the aerosol source 11 from falling off.

[0047] The filter material constituting the first filter 31 and the second filter 32 is, for example, a cylindrically shaped filler such as acetate, charcoal, cellulose fiber, nonwoven fabric, pulp paper, etc. Alternatively, a paper filter filled with sheet-like pulp paper may be used. The density of the filter material is not particularly limited, but is usually 0.10 g / cm 3 More than 0.25g / cm 3 less than 0.11 g / cm 3 More than 0.24g / cm 3 Preferably, it is 0.12 g / cm or less. 3 More than 0.23g / cm 3 More preferably, it is:

[0048] The form of the wrapper 33 is not particularly limited, and it may include one or more rows of seams containing adhesive. The adhesive may include a hot melt adhesive, and the hot melt adhesive may further include polyvinyl alcohol. Furthermore, when the filter portion 30 is made up of two or more components, it is preferable that the wrapper wraps these two or more components together. The material of the wrapper 33 is not particularly limited, and known materials can be used, and may contain fillers such as calcium carbonate. The thickness of the wrapper 33 is not particularly limited, and is usually 20 μm or more and 140 μm or less, preferably 30 μm or more and 130 μm or less, and more preferably 30 μm or more and 120 μm or less. The basis weight of the paper roll 33 is not particularly limited, and is usually 20 gsm to 100 gsm, preferably 22 gsm to 95 gsm, and more preferably 23 gsm to 90 gsm. Furthermore, the wrapper 33 may be coated or uncoated, but it is preferable to coat it with a desired material in order to impart functions other than strength and structural rigidity.

[0049] [Tip Paper 40] The composition of the tipping paper 40 is not particularly limited and can be any common embodiment, such as one containing pulp as the main component. Pulp may be made from wood pulp such as softwood pulp or hardwood pulp, or may be made by mixing non-wood pulp commonly used in cigarette papers for tobacco products, such as flax pulp, hemp pulp, sisal pulp, or esparto. These pulps may be used alone or in any combination of two or more types in any ratio.

[0050] The tipping paper 40 may be made up of one sheet, or may be made up of multiple sheets or more. Usable pulp types include chemical pulp produced by kraft cooking, acidic, neutral or alkaline sulfite cooking, soda cooking, etc., ground pulp, chemi-ground pulp, thermomechanical pulp, etc. The tipping paper 40 may be either one manufactured by the manufacturing method described above or a commercially available product. The shape of the tipping paper 40 is not particularly limited, and can be, for example, square or rectangular.

[0051] The basis weight of the tipping paper 40 is not particularly limited, but is usually 32 gsm or more and 60 gsm or less, preferably 33 gsm or more and 55 gsm or less, and more preferably 34 gsm or more and 53 gsm or less. The air permeability of the tipping paper 40 is not particularly limited, but is usually 0 Coresta units or more and 30,000 Coresta units or less, and preferably more than 0 Coresta units and 10,000 Coresta units or less. The air permeability is a value measured in accordance with ISO 2965:2009, and is the rate at which an area of ​​1 cm2 is lost per minute when the differential pressure between both sides of the paper is 1 kPa. 2 Flow rate of gas passing through (cm 3 ) 1 C.U. is expressed as cm under 1 kPa. 3 / (min·cm 2 )

[0052] In addition to the pulp, the tipping paper 40 may contain fillers such as metal carbonates such as calcium carbonate and magnesium carbonate, metal oxides such as titanium oxide, titanium dioxide and aluminum oxide, metal sulfates such as barium sulfate and calcium sulfate, metal sulfides such as zinc sulfide, quartz, kaolin, talc, diatomaceous earth, gypsum, etc. In particular, calcium carbonate is preferred from the viewpoints of improving whiteness and opacity and increasing the heating rate. These fillers may be used alone or in combination of two or more.

[0053] In addition to the pulp and fillers described above, various auxiliary agents may be added to the tipping paper 40. For example, the tipping paper 40 may contain 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, and polyamide epichlorohydrin (PAE). Examples of sizing agents include rosin soap, alkyl ketene dimer (AKD), alkenyl succinic anhydride (ASA), and highly saponified polyvinyl alcohol with a saponification degree of 90% or more.

[0054] A coating agent may be added to at least one of the two surfaces, the front and back surfaces, of the tipping paper 40. There are no particular restrictions on the coating agent, but a coating agent that can form a film on the surface of the paper and reduce liquid permeability is preferred.

[0055] A portion of the outer surface of the tipping paper 40 may be covered with a lip release material. The lip release material refers to a material configured to help the lip and tipping paper 40 to easily separate without causing substantial sticking when the user holds the filter portion 30 of the stick 2 in their mouth. The lip release material may contain, for example, ethyl cellulose, methyl cellulose, etc. For example, the outer surface of the tipping paper 40 may be coated with the lip release material by applying an ethyl cellulose-based or methyl cellulose-based ink to the outer surface of the tipping paper 40.

[0056] Furthermore, the tipping paper 40 has a plurality of through holes 41 formed in positions facing the openings V formed in the cooling section 20. The shape of the plurality of through holes 41 is not particularly limited as long as they are formed so as not to block the plurality of openings V formed in the cooling section 20. For example, one through hole 41 may face one opening V, or one through hole 41 may face two or more openings V. When forming the through holes 41 facing the openings V, for example, the tipping paper 40 having the through holes 41 formed therein may be wrapped around the outside of the forming paper 21 so that the through holes 41 and the openings V face each other. Alternatively, the tipping paper 40 may be wrapped around the outside of the forming paper 21 in a state where the through holes 41 and the openings V have not yet been formed, and then the forming paper 21 and the tipping paper 40 may be pierced simultaneously to form the through holes 41 and the openings V.

[0057] (Suction device 100) 1, suction device 100 includes a power supply unit 111 that stores power and supplies power to each component of suction device 100, a sensor unit 112 that detects various information related to suction device 100, and a notification unit 113 that notifies the user of the information. Suction device 100 also includes a memory unit 114 that stores various information for the operation of suction device 100, a communication unit 115 that transmits and receives information between suction device 100 and other devices, and a control unit 116 that controls the overall operation of suction device 100.

[0058] In addition, suction device 100 includes heating unit 121 that heats stick 2, heat insulating unit 122 that prevents heat transfer from heating unit 121 to other components of suction device 100, and holding unit 130 that holds stick 2. In suction device 100, the user inhales stick 2 while it is held in holding unit 130.

[0059] The suction device 100 also has a housing 110 that houses a power supply unit 111, a sensor unit 112, a notification unit 113, a memory unit 114, a communication unit 115, a control unit 116, a heating unit 121, a heat insulating unit 122, and a holding unit 130. The housing 110 is provided with an opening 110a formed for inserting the stick 2 into the housing 110. Examples of materials that form the housing 110 include plastic and metal materials such as aluminum. The suction device 100 may also have an opening / closing cover (not shown) attached to the top surface of the housing 110 that slides to open and close the opening 110a.

[0060] [Holding part 130] FIG. 3 is a diagram showing an example of a schematic configuration of the holding unit 130. As shown in FIG. FIG. 4 is a diagram showing an example of a cross section taken along the line IV-IV in FIG. Fig. 5(a) is a diagram showing an example of a cross section taken along line Va-Va in Fig. 4. Fig. 5(b) is a diagram showing an example of a cross section taken along line Vb-Vb in Fig. 4. The holding portion 130 includes an insertion portion 140 located on the side where the stick 2 is inserted, a compression portion 150 that compresses the stick 2 radially, a connection portion 160 that connects the insertion portion 140 and the compression portion 150, and a positioning portion 170 that determines the position of the stick 2 in the center line direction.

[0061] The insertion portion 140, the compression portion 150, and the connection portion 160 are cylindrical portions configured to have the same center line. For example, the insertion portion 140, the compression portion 150, and the connection portion 160 may be integrally molded and directly or indirectly fixed to the housing 110 (see FIG. 1). For example, the insertion portion 140, the compression portion 150, and the connection portion 160 may be made of a metal such as stainless steel. The insertion portion 140, the compression portion 150, and the connection portion 160 may also contain a ceramic material. Examples of ceramic materials include alumina, aluminum nitride, and silicon nitride ceramics, and these may be stacked and sintered.

[0062] The holding unit 130 holds the stick 2 inserted via the insertion unit 140 by compressing it with the compression unit 150. When the holding unit 130 holds the stick 2, the center line direction of the insertion unit 140, the compression unit 150, and the connection unit 160 is the same as the center line direction of the stick 2. The holding unit 130 also holds the stick 2 so that an end of the stick 2 on a first side in the center line direction contacts the positioning unit 170 inside the housing 110, and an end of the stick 2 on a second side in the center line direction is exposed to the outside of the housing 110. Hereinafter, the center line direction of the stick 2 when the holding unit 130 holds the stick 2 will sometimes be referred to as the up-down direction, and the side where the end of the stick 2 on the first side in the center line direction is located will sometimes be referred to as the lower side, and the side where the end of the stick 2 on the second side in the center line direction is located will sometimes be referred to as the upper side.

[0063] The insertion portion 140 is a cylindrical portion. The inner diameter of the insertion portion 140 is larger than the outer diameter of the tipping paper 40 arranged at the outermost side of the stick 2. The upper opening of the insertion portion 140 is located opposite the opening 110a of the housing 110. For example, when viewed from the top to bottom, if the opening 110a of the housing 110 is circular, the center of the opening 110a and the center of the insertion portion 140 are aligned. As shown in FIG. 1 , the upper end of the insertion portion 140 is in contact with the inner surface of the housing 110 or is spaced apart by a small gap (e.g., 0.5 mm). Therefore, the upper end of the insertion portion 140 is located inside the housing 110 by a distance equal to the thickness of the housing 110 plus the gap between the upper end of the insertion portion 140 and the inner surface of the housing 110. For example, if the thickness of housing 110 is 0.5 mm and the gap between the upper end of insertion portion 140 and the inner surface of housing 110 is 0.5 mm, the upper end of insertion portion 140 is located 1 mm inside from the top surface of housing 110. From the viewpoint of guiding as much air outside housing 110 as possible into insertion portion 140, it is preferable that the upper end of insertion portion 140 be closer to the top surface of housing 110, and it is desirable that it be located within 1 mm from the top surface of housing 110.

[0064] The compression section 150 is a cylindrical section with a bottom, and has a bottom 151 and a cylindrical section 152 . The bottom 151 has a through hole 155 formed in the center. The cylindrical portion 152 has a pair of flat opposing walls 156 that are provided facing each other at a distance that is smaller than the outer diameter D of the base portion 10 of the stick 2. The compression portion 150 differs from the insertion portion 140 in that, when viewed in the vertical direction, the compression portion 150 is provided with a pair of opposing walls 156 relative to the insertion portion 140. In other words, the compression portion 150 has a pair of arc-shaped portions 157 that are the same shape as the insertion portion 140, and a pair of opposing walls 156 that are arranged on both sides of the pair of arc-shaped portions 157.

[0065] The pair of opposing walls 156 are both arranged so as to be parallel in the vertical direction, and the distance B between the pair of opposing walls 156 is set to be smaller than the outer diameter D of the base material 10 of the stick 2. In the cross section of the pair of arc-shaped portions 157, the diameter of an imaginary circle passing through the inner surfaces of the pair of arc-shaped portions 157 is larger than the outer diameter D of the base material 10 of the stick 2.

[0066] The connection portion 160 is provided between the lower end of the insertion portion 140 and the upper end of the compression portion 150, and is a portion whose cross-section gradually changes from that of the insertion portion 140 to that of the compression portion 150 as it moves from the top to the bottom.

[0067] The positioning portion 170 is a member that is attached to the inside of the compression portion 150. The positioning portion 170 has a columnar main body portion 171 having an outer surface that conforms to the inner surfaces of the bottom portion 151 and the cylindrical portion 152 of the compression portion 150, a lower protrusion portion 172 that protrudes downward from the lower surface of the main body portion 171, and a pair of upper protrusion portions 173 that protrude upward from the upper surface of the main body portion 171.

[0068] The lower protrusion 172 has a cylindrical first columnar portion 175 and a second columnar portion 176 having a diameter smaller than that of the first columnar portion 175. The first columnar portion 175 and the second columnar portion 176 are arranged side by side in the vertical direction, with the first columnar portion 175 on the upper side and the second columnar portion 176 on the lower side. The diameter of the first columnar portion 175 is slightly smaller than the diameter of the through-hole 155 formed in the bottom portion 151 of the compression section 150. The positioning section 170 is attached to the compression section 150 with the first columnar portion 175 and the second columnar portion 176 passing through the through-hole 155 and exposed to the outside of the compression section 150.

[0069] The upper protrusion 173 has a rectangular parallelepiped shape and is disposed such that, when viewed in the vertical direction, the direction along the inner surfaces of the opposing walls 156 of the compression unit 150 is the longitudinal direction and the direction in which the pair of opposing walls 156 face each other is the lateral direction. In other words, the pair of upper protrusions 173 are provided separated by a predetermined gap G in the direction in which the pair of opposing walls 156 face each other. Furthermore, the longitudinal size of the upper protrusion 173 is larger than the distance B between the pair of opposing walls 156, which prevents the pair of upper protrusions 173 from being attached to the compression unit 150 in a state in which they are both in contact with both of the pair of opposing walls 156. Furthermore, the pair of upper protrusions 173 have the same size in the vertical direction.

[0070] In the positioning unit 170 configured as described above, the upper surfaces of the pair of upper protrusions 173 function as areas that come into contact with the tip of the substrate 10 of the stick 2 (the end surface on the first side in the center line direction) when the stick 2 is inserted into the compression unit 150. In other words, the stick 2 inserted into the compression unit 150 is inserted up to a specified position where the tip of the substrate 10 comes into contact with the pair of upper protrusions 173. Then, with the stick 2 inserted into the compression unit 150, the substrate 10 is sandwiched between the pair of opposing walls 156 of the compression unit 150 and compressed. Furthermore, with the stick 2 in contact with the pair of upper protrusions 173, the tip of the substrate 10 straddles the upper part of the gap G formed between the pair of upper protrusions 173.

[0071] [Heating section 121] The heating section 121 can be, for example, a metal thin film heater or a film heater arranged along the outer circumferential surface of the cylindrical section 152 of the compression section 150. A metal thin film heater is a flexible planar heater that uses a metal thin film as a heating element. A film heater, for example, has a metal that serves as a heating element and insulating films that are arranged on both sides of the metal to insulate the metal. For example, the metal that serves as the heating element can be stainless steel, and the insulating film can be polyimide.

[0072] The heating unit 121 is electrically connected to the power supply unit 111 via electrical wiring, and generates heat when power is supplied from the power supply unit 111, thereby heating the holding unit 130. As a result, the substrate 10 of the stick 2 inserted into the holding unit 130 is heated from the outer periphery via the holding unit 130.

[0073] [Insulation section 122] The heat insulating section 122 is disposed so as to cover at least the outer periphery of the heating section 121. For example, the heat insulating section 122 is made of a vacuum insulating material, an aerogel insulating material, or the like. Note that the vacuum insulating material is an insulating material in which, for example, glass wool, silica (silicon powder), or the like is wrapped in a resin film to create a high vacuum state, thereby reducing the heat conduction of gas to as close to zero as possible. The heat insulating section 122 also suppresses the transfer of heat generated by the operation of the heating section 121 to other components of the suction device 100.

[0074] (Area where hole V exists) Next, the region where the aperture V formed in the cooling part 20 of the stick 2 exists will be described. Hereinafter, when the position of the aperture V in the center line direction is referred to, it means the position of the center of the circle of the circular aperture V. Note that if the forming paper 21 and the tipping paper 40 are pierced simultaneously after the tipping paper 40 is wrapped around the outside of the forming paper 21, the aperture V and the through hole 41 will exist in the same region.

[0075] The openings V are preferably formed at a position 7 mm or more from the boundary between the cooling section 20 and the filter section 30 toward the cooling section 20 side (first side). This is because it not only improves the cooling capacity but also prevents substances generated by heating the base section 10 from accumulating in the cooling section 20, thereby increasing the amount of aerosol. Furthermore, when the base section 10 is heated, the vapor generated using the aerosol as condensation nuclei comes into contact with external air and drops in temperature before adhering to the inner surface of the forming paper 21, liquefying it and promoting the generation of aerosol.

[0076] Furthermore, the openings V are preferably formed at a position 12 mm or less in the direction toward the cooling section 20 (first side) from the boundary between the cooling section 20 and the filter section 30. In other words, the openings V are preferably present in an area at least a predetermined distance away in the direction toward the cooling section 20 (second side) from the boundary between the cooling section 20 and the substrate section 10. This is to prevent air heated by heating the substrate section 10 from flowing into the cooling section 20 through the openings V.

[0077] In other words, taking the boundary between the cooling section 20 and the base material 10 as the reference point, if the size of the cooling section 20 in the center line direction is 20 mm, it is preferable that the opening V is formed at a position 8 mm or more and 13 mm or less from the boundary between the cooling section 20 and the base material 10 in the direction toward the cooling section 20 side (second side).

[0078] When the plurality of concentrically arranged apertures V are treated as one aperture group, the number of aperture groups may be one or may be two or more. When there are two or more aperture groups, these aperture groups are preferably formed at the positions described above.

[0079] [Regarding the positional relationship between the opening V and the suction device 100] In the suction system 1, the stick 2 and the suction device 100 are configured so that when the holding part 130 holds the stick 2, the opening V is inside the housing 110, and inside the insertion part 140 or the connection part 160. This is because when the openings V provided on the outer periphery of the cooling part 20 are compressed by the tubular part 152 of the compression part 150, the amount of air flowing into the cooling part 20 from the openings V decreases, so the openings V are not located inside the tubular part 152 of the compression part 150. The openings V located inside the insertion part 140 or the connection part 160 means that the area where the openings V exist in the vertical direction overlaps with the area where the insertion part 140 or the connection part 160 is provided in the vertical direction.

[0080] More specifically, the distance L1 from the end face (tip face) on the first side in the center line direction of the stick 2 to the opening V is set to be greater than the distance L2 from the upper surface of the pair of upper protrusions 173 of the positioning portion 170 to the lower end of the connection portion 160 (in other words, the upper end of the tubular portion 152 of the compression portion 150), and smaller than the distance L3 from the upper surface of the pair of upper protrusions 173 to the upper end of the insertion portion 140.

[0081] Since the lower surface of main body 171 of positioning portion 170 contacts the upper surface of bottom 151 of compression portion 150, if the sum of the vertical size of main body 171 and the vertical size of upper protrusion 173 is defined as distance L4, then distance L1 from the end face on the first side in the center line direction of stick 2 to opening V is set as follows: In other words, distance L1 is set to be greater than distance L6, which is obtained by subtracting distance L4 from distance L5, which is obtained by subtracting distance L4 from the lower end of connection portion 160 to the upper surface of bottom 151 of compression portion 150, and less than distance L8, which is obtained by subtracting distance L4 from distance L7, which is obtained by subtracting distance L4 from the upper end of insertion portion 140 to the upper surface of bottom 151 of compression portion 150.

[0082] Meanwhile, the heating unit 121 is disposed up to the upper end of the cylindrical portion 152 of the compression unit 150. From the viewpoint of increasing the temperature of the substrate 10 by heating with the heating unit 121 and thereby increasing the amount of aerosol generated, it is preferable that the heating unit 121 heats not only the substrate 10 of the stick 2 but also the portion of the cooling unit 20 on the substrate 10 side. For example, it is preferable to heat an area that is equal to or less than a predetermined heating distance Lh from the boundary between the cooling unit 20 and the substrate 10 toward the cooling unit 20. Therefore, it is preferable that the distance L2 from the upper surfaces of the pair of upper protrusions 173 of the positioning unit 170 to the upper end of the cylindrical portion 152 of the compression unit 150 (in other words, the lower end of the connection unit 160) is the sum of the size h in the center line direction of the substrate 10 of the stick 2 and the heating distance Lh. For example, the heating distance Lh can be 5 mm.

[0083] On the other hand, it is preferable that the openings V are not located near the heating unit 121. This is because if air heated by the heating unit 121 flows into the cooling unit 20 through the openings V, it is difficult to promote the generation of aerosols. Therefore, it is preferable that the distance in the vertical direction from the upper end of the tubular portion 152 of the compression unit 150 to the openings V be equal to or greater than a predetermined lower limit distance Lm. For example, the lower limit distance Lm can be 3 mm.

[0084] Therefore, in consideration of the positional relationship with the suction device 100, the openings V are preferably formed at a position that is (heating distance Lh+lower limit distance Lm) or more from the boundary between the cooling section 20 and the substrate 10 toward the cooling section 20. For example, when the heating distance Lh is 5 mm and the lower limit distance Lm is 3 mm, the openings V are preferably formed at a position that is 8 mm or more from the boundary between the cooling section 20 and the substrate 10 toward the cooling section 20. For example, when the size of the connecting portion 160 in the vertical direction is less than the lower limit distance Lm, the opening V exists inside the insertion portion 140.

[0085] FIG. 6 is a diagram showing an example of the air flow during suction in the suction system 1. As shown in FIG. When inhaling using the suction device 100, the stick 2 is inserted to a specified position where the tip of the substrate 10 contacts the pair of upper protrusions 173 of the holding part 130. When the stick 2 is inserted to the specified position, the tip of the substrate 10 straddles the upper part of the gap G formed between the pair of upper protrusions 173. Furthermore, a gap exists between the inner surfaces of the pair of arc-shaped parts 157 of the holding part 130 and the outer surface of the stick 2. Therefore, when the user inhales, air outside the housing 110 is introduced into the interior of the substrate 10 from the tip of the substrate 10 through the gap between the inner surface of the insertion part 140 of the holding part 130 and the outer surface of the stick 2, the gap between the inner surface of the connection part 160 and the outer surface of the stick 2, the gap between the inner surfaces of the pair of arc-shaped parts 157 of the compression part 150 and the outer surface of the stick 2, and the gap G between the pair of upper protrusions 173. The air introduced into the interior from the tip of the substrate 10 and the steam generated by heating the substrate 10 are mixed together and reach the interior of the cooling section 20 .

[0086] A portion of the air introduced from outside the housing 110 into the gap between the inner surface of the insertion portion 140 of the holding portion 130 and the outer surface of the stick 2 flows into the cooling portion 20 through the openings V. As a result, the steam generated by heating the substrate portion 10 comes into contact with the air that has flowed into the cooling portion 20 through the openings V, lowering its temperature, thereby promoting the generation of aerosol. In addition, the air that has flowed into the cooling portion 20 through the openings V prevents the mixture of the air introduced into the interior from the tip of the substrate portion 10 and the steam generated by heating the substrate portion 10 from stagnating within the cooling portion 20, thereby increasing the amount of aerosol delivered.

[0087] In the inhalation system 1, when the holding part 130 holds the stick 2, the apertures V are located inside the housing 110, inside the insertion part 140 or the connection part 160, and therefore there are gaps between the entrances of all of the apertures V provided in the circumferential direction and the inner surface of the insertion part 140 or the connection part 160. Therefore, compared to when the apertures V are located inside the compression part 150, the amount of air flowing in through the apertures V is greater, and it is possible to supply more aerosol into the user's mouth.

[0088] Here, if the size of the stick 2 exposed from the housing 110 in the center line direction is large, there is a risk that the stick 2 will bend when the user touches the stick 2 with their hand or when the stick 2 touches something other than the suction device 100, such as a desk, when inhaling. Therefore, the size of the stick 2 protruding from the top surface of the housing 110 in the center line direction is preferably 25 mm or less. On the other hand, because the user holds the stick 2 protruding from the top surface of the housing 110 in their mouth to inhale, the size of the stick 2 protruding from the top surface of the housing 110 in the center line direction is preferably 10 mm or more.

[0089] Furthermore, regardless of the size of the stick 2 protruding from the top surface of the housing 110 in the center line direction between 10 mm and 25 mm, the sizes of the filter section 30, the insertion section 140, and the connection section 160 should be set so that the opening V is located inside the insertion section 140 or the connection section 160 when the holding section 130 holds the stick 2.

[0090] For example, if the size of the stick 2 protruding from the upper surface of the housing 110 in the center line direction is 25 mm, by making the size of the filter section 30 in the center line direction 20 mm and forming the opening V at a position 10 mm from the boundary between the cooling section 20 and the filter section 30 toward the cooling section 20, the opening V will be located 5 mm inward from the opening 110a of the housing 110. In such a case, by making the size of the insertion section 140 in the center line direction 5 mm or more, the opening V can be located inside the insertion section 140.

[0091] As described above, the stick 2 comprises a substrate 10 containing an aerosol source, a cylindrical cooling section 20 that generates aerosol by cooling the vapor generated by heating the substrate 10, and a filter section 30 through which the aerosol passes. The cooling section 20 has an opening V that allows air to flow from the outside to the inside, formed at a position 7 mm or more from the boundary between the cooling section 20 and the filter section 30 or within 13 mm from the boundary between the cooling section 20 and the substrate 10. With this stick 2, the vapor generated by heating the substrate 10 is less likely to stagnate within the cooling section 20 and its temperature drops before it adheres to the inner surface of the forming paper 21, which promotes aerosol generation and increases the amount of aerosol that can be supplied to the user's mouth.

[0092] Moreover, the openings V are formed at a position 8 mm or more from the boundary between the cooling part 20 and the base part 10. This prevents air heated by heating the base part 10 from flowing into the cooling part 20 through the openings V, and therefore increases the amount of aerosol that can be supplied to the user's oral cavity compared to when the openings V are formed at a position less than 8 mm from the boundary between the cooling part 20 and the base part 10.

[0093] Similarly, it is preferable that the openings V are formed at a position within 12 mm from the boundary between the cooling section 20 and the filter section 30. This makes it difficult for the openings V to be close to the area where the base section 10 is heated, and therefore the amount of aerosol that can be supplied to the user's oral cavity increases compared to when the openings V are formed at a position farther than 12 mm from the boundary between the cooling section 20 and the filter section 30.

[0094] The inhalation system 1 also includes an inhalation device 100 having a substrate 10 including an aerosol source, a cylindrical cooling unit 20 that generates an aerosol by cooling vapor generated by heating the substrate 10, and a filter unit 30 through which the aerosol passes, a holding unit 130 that holds the stick 2, a heating unit 121 that heats the substrate 10, and a housing 110 that accommodates the holding unit 130 and the heating unit 121. The inhalation device 100 holds at least the substrate 10 of the stick 2 inserted into the housing 110 through an opening 110a formed in the housing 110 by the holding unit 130, and exposes at least a portion of the filter unit 30 to the outside of the housing 110. The cooling unit 20 of the stick 2 has an opening V that allows air to flow from the outside to the inside, and is formed at a position that is inside the housing 110 when the stick 2 is held by the holding unit 130. This makes it easier for the openings V to be located closer to the substrate 10 side than the boundary between the cooling section 20 and the filter section 30, so that air flows into the cooling section 20 through the openings V at a position closer to the substrate 10 side. As a result, the steam generated by heating the substrate 10 is less likely to remain inside the cooling section 20, and its temperature drops before it adheres to the inner surface of the forming paper 21, promoting the generation of aerosol and increasing the amount of aerosol that can be supplied to the user's mouth.

[0095] When the holder 130 holds the stick 2, a gap is formed between the inner surface and the outer surface of the portion of the cooling unit 20 of the stick 2 where the opening V is formed. This makes it easier for air to flow into the cooling unit 20 through the opening V. Furthermore, holding unit 130 has insertion unit 140 provided on the opening 110a side, and compression unit 150 provided on the opposite side of insertion unit 140 from opening 110a, which compresses stick 2 in a direction intersecting the insertion direction. Insertion unit 140 is cylindrical with an inner diameter larger than the outer diameter of the outer surface of stick 2, and when holding unit 130 holds stick 2, opening V is located inside insertion unit 140. As a result, when holding unit 130 holds stick 2, a gap is formed with high certainty between the inner surface of insertion unit 140 and the outer surface of the portion of cooling unit 20 of stick 2 where opening V is formed, making it easier for air to flow into cooling unit 20 through opening V.

[0096] Note that the opening V when the holding part 130 holds the stick 2 may be present inside the connecting part 160. When the holding part 130 holds the stick 2, a gap is also formed between the inner surface of the connecting part 160 and the outer surface of the part of the cooling part 20 of the stick 2 where the opening V is formed, so that air can easily flow into the inside of the cooling part 20 through the opening V.

[0097] Second Embodiment FIG. 7 is a diagram showing a vertical cross section of the stick 5 according to the second embodiment. The stick 5 according to the second embodiment differs from the stick 2 described above in that it has a cooling unit 520 that corresponds to the cooling unit 20. The differences from the first embodiment will be described below. The same reference numerals will be used for the same parts as in the first embodiment, and detailed descriptions thereof will be omitted.

[0098] The cooling section 520 differs from the stick 2 in that it does not have a member equivalent to the forming paper 21. The cooling section 520 is a space formed inside the stick 5, and is a cylindrical space surrounded by the substrate section 10, the filter section 30, and the tipping paper 40. In the stick 5 according to the second embodiment, the through holes 41 formed in the tipping paper 40 function as openings V that allow air to flow from the outside of the cooling section 520 to the inside.

[0099] In the stick 5 of the second embodiment configured as described above, the position of the center line direction of the opening V is formed in the same manner as the position of the center line direction of the opening V of the stick 2 of the first embodiment, and therefore the same effects as those described in the first embodiment can be achieved. [Explanation of symbols]

[0100] 1...suction system, 2,5...non-combustion heating stick, 10...substrate portion, 20...cooling portion, 30...filter portion, 40...tipping paper, 110...housing, 110a...opening, 121...heating portion, 130...holding portion, 140...insertion portion, 150...compression portion, V...opening

Claims

1. a substrate portion including an aerosol source; a cylindrical cooling section that cools the vapor generated by heating the substrate section to generate an aerosol; a filter portion through which the aerosol passes; Equipped with The cooling section has an opening for allowing air to flow from the outside to the inside, the opening being formed at a position 7 mm or more from the boundary between the cooling section and the filter section and 8 mm or more from the boundary between the cooling section and the base section. Non-combustion heating stick.

2. a substrate portion including an aerosol source; a cylindrical cooling section that cools the vapor generated by heating the substrate section to generate an aerosol; a filter portion through which the aerosol passes; Equipped with The cooling section has an opening for allowing air to flow from the outside to the inside, the opening being formed at a position 7 mm or more from the end of the cooling section on the filter section side and 8 mm or more from the end of the cooling section on the base section side. Non-combustion heating stick.

3. The packing density of the aerosol source is 300 mg / cm ３ That's all. The non-combustion heating stick according to claim 1 or 2.

4. The size of the cooling portion in the center line direction is 15 mm or more and 35 mm or less. The non-combustion heating stick according to claim 1 or 2.

5. The diameter of the filter portion is 5.0 mm or more and 8.0 mm or less. The non-combustion heating stick according to claim 1 or 2.

6. The size of the filter portion in the center line direction is 10 mm or more and 30 mm or less. The non-combustion heating stick according to claim 1 or 2.

7. Two or more of the openings are formed in the center line direction. The non-combustion heating stick according to claim 1 or 2.

8. The cooling unit has a tip paper wound around the cooling unit and the filter unit to integrate them together. A portion of the outer surface of the tipping paper is coated with a lip release material. The non-combustion heating stick according to claim 1 or 2.

9. The water content of the aerosol source is 10% by mass or more and 15% by mass or less based on the total amount of the aerosol source. The non-combustion heating stick according to claim 1 or 2.

10. A non-combustion heating stick according to claim 1 or 2; a suction device having a holding part for holding the non-combustion heating type stick and a heating part for heating the base part; Equipped with the holding portion forms a gap between an inner surface and an outer surface of the non-combustion and heating type stick when the holding portion holds the non-combustion and heating type stick; Suction system.

Images