WO2023112152A1 - 非燃焼加熱型スティック - Google Patents
非燃焼加熱型スティック Download PDFInfo
- Publication number
- WO2023112152A1 WO2023112152A1 PCT/JP2021/046070 JP2021046070W WO2023112152A1 WO 2023112152 A1 WO2023112152 A1 WO 2023112152A1 JP 2021046070 W JP2021046070 W JP 2021046070W WO 2023112152 A1 WO2023112152 A1 WO 2023112152A1
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- Prior art keywords
- less
- filter
- activated carbon
- paper
- stick
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Classifications
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- A—HUMAN NECESSITIES
- A24—TOBACCO; CIGARS; CIGARETTES; SIMULATED SMOKING DEVICES; SMOKERS' REQUISITES
- A24D—CIGARS; CIGARETTES; TOBACCO SMOKE FILTERS; MOUTHPIECES FOR CIGARS OR CIGARETTES; MANUFACTURE OF TOBACCO SMOKE FILTERS OR MOUTHPIECES
- A24D1/00—Cigars; Cigarettes
- A24D1/20—Cigarettes specially adapted for simulated smoking devices
-
- A—HUMAN NECESSITIES
- A24—TOBACCO; CIGARS; CIGARETTES; SIMULATED SMOKING DEVICES; SMOKERS' REQUISITES
- A24D—CIGARS; CIGARETTES; TOBACCO SMOKE FILTERS; MOUTHPIECES FOR CIGARS OR CIGARETTES; MANUFACTURE OF TOBACCO SMOKE FILTERS OR MOUTHPIECES
- A24D1/00—Cigars; Cigarettes
- A24D1/02—Cigars; Cigarettes with special covers
-
- A—HUMAN NECESSITIES
- A24—TOBACCO; CIGARS; CIGARETTES; SIMULATED SMOKING DEVICES; SMOKERS' REQUISITES
- A24D—CIGARS; CIGARETTES; TOBACCO SMOKE FILTERS; MOUTHPIECES FOR CIGARS OR CIGARETTES; MANUFACTURE OF TOBACCO SMOKE FILTERS OR MOUTHPIECES
- A24D3/00—Tobacco smoke filters, e.g. filter-tips, filtering inserts; Filters specially adapted for simulated smoking devices; Mouthpieces for cigars or cigarettes
- A24D3/04—Tobacco smoke filters characterised by their shape or structure
- A24D3/043—Tobacco smoke filters characterised by their shape or structure with ventilation means, e.g. air dilution
-
- A—HUMAN NECESSITIES
- A24—TOBACCO; CIGARS; CIGARETTES; SIMULATED SMOKING DEVICES; SMOKERS' REQUISITES
- A24D—CIGARS; CIGARETTES; TOBACCO SMOKE FILTERS; MOUTHPIECES FOR CIGARS OR CIGARETTES; MANUFACTURE OF TOBACCO SMOKE FILTERS OR MOUTHPIECES
- A24D3/00—Tobacco smoke filters, e.g. filter-tips, filtering inserts; Filters specially adapted for simulated smoking devices; Mouthpieces for cigars or cigarettes
- A24D3/04—Tobacco smoke filters characterised by their shape or structure
- A24D3/048—Tobacco smoke filters characterised by their shape or structure containing additives
-
- A—HUMAN NECESSITIES
- A24—TOBACCO; CIGARS; CIGARETTES; SIMULATED SMOKING DEVICES; SMOKERS' REQUISITES
- A24D—CIGARS; CIGARETTES; TOBACCO SMOKE FILTERS; MOUTHPIECES FOR CIGARS OR CIGARETTES; MANUFACTURE OF TOBACCO SMOKE FILTERS OR MOUTHPIECES
- A24D3/00—Tobacco smoke filters, e.g. filter-tips, filtering inserts; Filters specially adapted for simulated smoking devices; Mouthpieces for cigars or cigarettes
- A24D3/06—Use of materials for tobacco smoke filters
- A24D3/08—Use of materials for tobacco smoke filters of organic materials as carrier or major constituent
- A24D3/10—Use of materials for tobacco smoke filters of organic materials as carrier or major constituent of cellulose or cellulose derivatives
-
- A—HUMAN NECESSITIES
- A24—TOBACCO; CIGARS; CIGARETTES; SIMULATED SMOKING DEVICES; SMOKERS' REQUISITES
- A24D—CIGARS; CIGARETTES; TOBACCO SMOKE FILTERS; MOUTHPIECES FOR CIGARS OR CIGARETTES; MANUFACTURE OF TOBACCO SMOKE FILTERS OR MOUTHPIECES
- A24D3/00—Tobacco smoke filters, e.g. filter-tips, filtering inserts; Filters specially adapted for simulated smoking devices; Mouthpieces for cigars or cigarettes
- A24D3/06—Use of materials for tobacco smoke filters
- A24D3/16—Use of materials for tobacco smoke filters of inorganic materials
- A24D3/163—Carbon
-
- A—HUMAN NECESSITIES
- A24—TOBACCO; CIGARS; CIGARETTES; SIMULATED SMOKING DEVICES; SMOKERS' REQUISITES
- A24D—CIGARS; CIGARETTES; TOBACCO SMOKE FILTERS; MOUTHPIECES FOR CIGARS OR CIGARETTES; MANUFACTURE OF TOBACCO SMOKE FILTERS OR MOUTHPIECES
- A24D3/00—Tobacco smoke filters, e.g. filter-tips, filtering inserts; Filters specially adapted for simulated smoking devices; Mouthpieces for cigars or cigarettes
- A24D3/02—Manufacture of tobacco smoke filters
- A24D3/0275—Manufacture of tobacco smoke filters for filters with special features
- A24D3/0287—Manufacture of tobacco smoke filters for filters with special features for composite filters
-
- A—HUMAN NECESSITIES
- A24—TOBACCO; CIGARS; CIGARETTES; SIMULATED SMOKING DEVICES; SMOKERS' REQUISITES
- A24D—CIGARS; CIGARETTES; TOBACCO SMOKE FILTERS; MOUTHPIECES FOR CIGARS OR CIGARETTES; MANUFACTURE OF TOBACCO SMOKE FILTERS OR MOUTHPIECES
- A24D3/00—Tobacco smoke filters, e.g. filter-tips, filtering inserts; Filters specially adapted for simulated smoking devices; Mouthpieces for cigars or cigarettes
- A24D3/17—Filters specially adapted for simulated smoking devices
Definitions
- the present invention relates to non-combustion heating sticks.
- Patent Literature 1 discloses that a BET surface area of at least 800 m 2 /g, a pore structure including mesopores and micropores, and a pore volume of at least 0.9 cm 3 /g as measured by a nitrogen adsorption method. a) said porous carbon material has a bulk density of 0.5 g/cc or less; and/or b) said Smoke filters for smoking articles are described in which 15-65% of the pore volume is mesopores.
- Patent Document 2 also discloses a smoking article comprising a smokable material and an activated carbon material downstream of said smokable material, wherein said activated carbon material has a total fine micropore volume of about 0.9 or less.
- a smoking article having a ratio to pore volume and wherein said activated carbon material contains surface oxygen at a concentration of less than or equal to about 5000 micromole/gram as determined by thermal desorption.
- porous carbon materials and activated carbon materials are used in Patent Documents 1 and 2, both specific descriptions and examples describe combustible cigarettes.
- Non-combustion heating sticks which generate aerosol by heating a base material containing an aerosol source, have a lower heating temperature for the base material than combustible cigarettes, so they do not contain flavor and taste inhibiting ingredients such as aldehydes. effects have not been considered.
- An object of the present invention is to remove flavor and taste inhibiting components such as aldehydes from a non-combustion heating stick heated to a high temperature while maintaining the user's satisfaction with the taste.
- the first feature of the present invention completed for this purpose is a base member including an aerosol source, and a cooling unit that cools vapor generated by heating the base member to generate aerosol. and a filter portion arranged at a portion through which the aerosol passes, wherein at least one of the base portion, the cooling portion, and the filter portion contains a porous adsorbent.
- a second feature may be that the porous adsorbent is activated carbon.
- a third feature of the activated carbon is that the ratio of the volume of pores with a pore diameter of 50 nm or more and 5000 nm or less to the total volume of pores with a pore diameter of 5000 nm or less may be 15% or more.
- a fourth feature is that the activated carbon may have a pore volume of 0.2 cm 3 /g or more and 0.9 cm 3 /g or less with a pore diameter of 50 nm or more and 5000 nm or less.
- a fifth feature of the activated carbon is that the ratio of the pore volume with a pore diameter of less than 2 nm to the total pore volume with a pore diameter of 5000 nm or less may be 70% or less.
- a sixth feature may be that the activated carbon has a BET specific surface area of 600 m 2 /g or more and 1800 m 2 /g or less.
- a seventh feature may be located where the porous sorbent is in contact with the aerosol within the stick.
- the porous adsorbent may be present at one or more of any one of the following 1) to 5). 1) Inside the filter of the filter part 2) Inside the paper layer of the roll paper on which the filter is wound or on the surface facing the filter 3) Inside the hollow part of the filter part 4) On the surface facing the hollow part 5) A plurality of the filters and a cavity formed between the segments.
- the ninth feature is arranged in a base portion including an aerosol source and a portion through which the aerosol generated by heating the base portion passes.
- At least one of the base material part and the filter part has a ratio of pore volume with pore diameters of 50 nm or more and 5000 nm or less to the total pore volume with pore diameters of 5000 nm or less is 15% or more. It may also be a non-combustion heated stick containing some activated carbon.
- the first feature it is possible to provide a non-combustion heating stick that preferentially removes flavor-drinking taste-inhibiting components such as aldehydes while maintaining the user's satisfaction with smoking.
- the second feature it is possible to provide a non-combustion heating stick that can selectively reduce flavor and taste inhibiting components such as aldehydes, as compared to the case of using a porous adsorbent other than activated carbon. .
- affinity with aerosol It is possible to provide a non-combustion heating stick which is highly durable and can have a good effect on flavor and taste.
- the aerosol compared to the case of using activated carbon having a pore volume of less than 0.2 cm 3 /g or more than 0.9 cm 3 /g with a pore diameter of 50 nm or more and 5000 nm or less, the aerosol It is possible to provide a non-combustion heating stick that has a high affinity and can have a good effect on flavor and taste.
- Non-combustion heated sticks compared to the case of using activated carbon in which the ratio of the pore volume with a pore diameter of less than 2 nm to the total pore volume with a pore diameter of 5000 nm or less exceeds 70%, the flavor and taste inhibition of aldehydes and the like Non-combustion heated sticks can be provided whose constituents can be selectively reduced.
- the sixth feature compared to the case of using activated carbon having a BET specific surface area of less than 600 m 2 /g or more than 1800 m 2 /g, flavor and taste inhibitory components such as aldehydes are selectively reduced. It is possible to provide a non-combustion heated stick that can be used.
- the non-combustion heating stick that can selectively reduce flavor and taste inhibitory components such as aldehydes.
- the eighth characteristic it is possible to provide a non-combustion heating stick that can selectively reduce flavor and taste inhibiting components such as aldehydes as compared to the case where no porous adsorbent is used.
- the ninth feature it is possible to provide a non-combustion heating stick that preferentially removes flavor-drinking taste-inhibiting components such as aldehydes while maintaining the user's satisfaction with smoking.
- FIG. 1 is a view showing a longitudinal section of a non-combustion heating stick according to a first embodiment
- FIG. BRIEF DESCRIPTION OF THE DRAWINGS It is a schematic diagram which shows typically the structural example of the suction device which concerns on 1st Embodiment.
- FIG. 5 is a schematic diagram showing a vertical cross section of a filter portion of a non-combustion heating stick according to another embodiment.
- FIG. 1 is a view showing a longitudinal section of a non-combustion heating stick 1 according to the first embodiment.
- FIG. 2 is a schematic diagram schematically showing a configuration example of the suction device 100 according to the first embodiment.
- a non-combustion heating stick (hereinafter sometimes referred to as “stick”) 1 according to the first embodiment includes a base portion 10 , a cooling portion 20 and a filter portion 30 .
- the base material portion 10 is formed in a cylindrical shape.
- the direction of the centerline CL of the base member 10 may be referred to as the "centerline direction".
- the stick 1 further includes a tipping paper 40 that integrates the base material portion 10, the cooling portion 20, and the filter portion 30 by winding them in order in the direction of the center line.
- a tipping paper 40 that integrates the base material portion 10, the cooling portion 20, and the filter portion 30 by winding them in order in the direction of the center line.
- one end side in the centerline direction (left side in FIG. 1) may be referred to as a first side
- the other end side in the centerline direction (right side in FIG. 1) may be referred to as a second side.
- the first side is the end side that is inserted into the suction device 100 .
- the second side is opposite to the first side and is the end side that the user holds in his/her mouth for suction.
- a cross section along the centerline direction is called a "longitudinal cross section", and a cross section taken along a plane perpendicular to the centerline direction is defined as a "transverse cross section".
- the suction device 100 includes a power supply unit 111 that accumulates power and supplies power to each component of the suction device 100, a sensor unit 112 that detects various information about the suction device 100, an information and a notification unit 113 for notifying the user of.
- the suction device 100 also includes a storage unit 114 for storing various information for the operation of the suction device 100, a communication unit 115 for transmitting and receiving information between the suction device 100 and other devices, and the suction device 100. and a control unit 116 for controlling overall internal operations.
- the suction device 100 also includes a heating unit 121 that heats the stick 1, a holding unit 140 that holds the stick 1, an opening 142 that communicates the internal space 141 with the outside, and other components of the suction device 100 from the heating unit 121. and a heat insulator 144 that prevents heat transfer to the element.
- the user performs suction while the stick 1 is held by the holding portion 140 .
- the heating part 121 heats the base material part 10 of the stick 1 .
- the heating part 121 is made of any material such as metal or polyimide.
- the heating part 121 is configured in a film shape and arranged so as to cover the outer periphery of the holding part 140 . Then, when the heating part 121 generates heat, the aerosol source 11 (not shown in FIG. 2) included in the stick 1 is heated from the outer circumference of the stick 1 .
- the heating unit 121 generates heat when supplied with power from the power supply unit 111 .
- power may be supplied when the sensor unit 112 detects that a predetermined user input has been performed. When the temperature of the stick 1 heated by the heating unit 121 reaches a predetermined temperature, the user can suck.
- the power supply may be stopped.
- power may be supplied and aerosol may be generated during a period in which the sensor unit 112 detects that the user has inhaled.
- the heat insulation part 144 is arranged so as to cover at least the outer periphery of the heating part 121 .
- the heat insulating part 144 is made of a vacuum heat insulating material, an airgel heat insulating material, or the like.
- a vacuum insulation material is, for example, a heat insulation material in which heat conduction due to gas is nearly zero by wrapping glass wool and silica (powder of silicon) in a resin film to create a high vacuum state. be.
- the base member 10 has an aerosol source 11 that generates vapor from which an aerosol is generated when heated, and a wrapping paper 12 that covers the outer periphery of the aerosol source 11 .
- Substrate portion 10 of FIG. 1 is an example of a substrate portion that includes an aerosol source.
- the base material part 10 is formed in a cylindrical shape by winding the aerosol source 11 around the wrapping paper 12 .
- the aerosol source 11 may be tobacco-derived, such as, for example, tobacco cuts or tobacco raw materials molded into granules, sheets, or powder.
- the aerosol source 11 may also include non-tobacco sources made from plants other than tobacco (eg, mints, herbs, etc.).
- the aerosol source 11 may contain a perfume ingredient such as menthol. If the inhalation device 100 is a medical inhaler, the aerosol source 11 may contain a medicament for inhalation by the patient.
- the aerosol source 11 is not limited to solids, and may be polyhydric alcohols such as glycerin and propylene glycol, and liquids such as water. At least part of the base material part 10 is housed in the internal space 141 of the holding part 140 while the stick 1 is held by the holding part 140 shown in FIG.
- the base material portion 10 formed by winding the aerosol source 11 with the wrapping paper 12 preferably has a cylindrical shape that satisfies a shape with an aspect ratio defined by Equation 1 of 1 or more.
- w is the width of the cross section of the base member 10
- h is the size of the base member 10 in the direction of the center line
- h ⁇ w is preferred.
- the shape of the cross section is not limited, and may be a polygon, a polygon with rounded corners, a circle, an ellipse, or the like. is the diameter of the circumscribed circle or the major axis of the circumscribed ellipse. It is preferable that the width of the aerosol source 11 constituting the base material portion 10 is 4 mm or more and 9 mm or less.
- the size of the base material portion 10 in the center line direction can be appropriately changed according to the size of the product, but is usually 10 mm or more, preferably 12 mm or more, more preferably 15 mm or more, and 18 mm or more. is more preferable.
- the size of the base material portion 10 in the center line direction is usually 70 mm or less, preferably 50 mm or less, more preferably 30 mm or less, and even more preferably 25 mm or less.
- the ratio of the size of the base material part 10 to the size of the stick 1 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, and 20% or more. is preferably 25% or more, and even more preferably 30% or more.
- the ratio of the size of the base material portion 10 to the size of the stick 1 is usually 80% or less, preferably 70% or less, more preferably 60% or less, and 50% or less. is more preferable, 45% or less is particularly preferable, and 40% or less is most preferable.
- the content of the aerosol source 11 in the base material portion 10 is not particularly limited, but may be 200 mg or more and 800 mg or less, preferably 250 mg or more and 600 mg or less. This range is particularly suitable for the base member 10 with a circumference of 22 mm and a size of 20 mm in the centerline direction.
- the cut tobacco material contained in the aerosol source 11 is not particularly limited, and known materials such as lamina and backbone can be used.
- dried tobacco leaves are pulverized to an average particle size of 20 ⁇ m or more and 200 ⁇ m or less to obtain pulverized tobacco, which is homogenized and processed into a sheet (hereinafter also simply referred to as “homogenized sheet”). may be engraved.
- a homogenizing sheet having a size approximately equal to the size in the center line direction of the base material part 10 is chopped substantially horizontally with the center line direction of the base material part 10, and the aerosol source 11 is filled with the so-called strand. can be a type.
- the width of the chopped tobacco is preferably 0.5 mm or more and 2.0 mm or less for filling the aerosol source 11 .
- отно ⁇ еским can be used for the tobacco leaves used for producing the cut tobacco and the homogenized sheet.
- examples include yellow, burley, oriental, landrace, other Nicotiana-tabacum varieties, Nicotiana-Rustica varieties, and mixtures thereof.
- the mixture can be appropriately blended and used so as to obtain the desired taste. Details of tobacco varieties are disclosed in "Tobacco Encyclopedia, Tobacco Research Center, March 31, 2009".
- There are a number of conventional methods for producing homogenized sheets that is, methods for pulverizing tobacco leaves and processing them into homogenized sheets. The first is a method of producing a papermaking sheet using a papermaking process.
- the second method is to mix pulverized tobacco leaves with an appropriate solvent such as water to homogenize the mixture, and then thinly cast the homogenized product on a metal plate or metal plate belt and dry it to produce a cast sheet.
- a third method is to prepare a rolled sheet by mixing a suitable solvent such as water with pulverized tobacco leaves, homogenizing the mixture, and extruding the mixture into a sheet. Details of the types of homogenizing sheets are disclosed in "Encyclopedia of Tobacco, Tobacco Research Center, March 31, 2009".
- the water content of the aerosol source 11 can be 10% by mass or more and 15% by mass or less, preferably 11% by mass or more and 13% by mass or less, relative to the total amount of the aerosol source 11 . Such a water content suppresses the occurrence of winding stains, and improves the winding suitability of the base material portion 10 during manufacturing.
- the aerosol source 11 is not particularly limited, and may contain extracts from various natural products and/or constituents thereof, depending on the application. Extractable substances and/or constituents thereof may include glycerin, propylene glycol, triacetin, 1,3-butanediol, and mixtures thereof.
- the content of the extracting substance and/or its constituent components in the aerosol source 11 is not particularly limited, and from the viewpoint of sufficiently generating an aerosol and imparting a good flavor, it is usually It is 5% by mass or more, preferably 10% by mass or more.
- the content of the extractable substance and/or its constituent components in the aerosol source 11 is usually 50% by mass or less, preferably 15% by mass or more and 25% by mass or less.
- Aerosol source 11 may contain a perfume.
- the type of fragrance is not particularly limited, and menthol is particularly preferable from the viewpoint of imparting a good flavor. Moreover, these fragrance
- the packing density of the aerosol source 11 is not particularly limited, but is usually 250 mg/cm 3 or more, preferably 300 mg/cm 3 or more, from the viewpoint of securing the performance of the stick 1 and imparting good flavor. Also, the packing density in the aerosol source 11 is usually 400 mg/cm 3 or less, preferably 350 mg/cm 3 or less.
- the aerosol source 11 may also consist of tobacco sheets.
- the number of tobacco sheets may be one, or two or more.
- a tobacco sheet having one side of a size approximately equal to the size in the center line direction of the object to be filled is used as the object to be filled.
- a mode in which the sheet is filled in a state in which the sheet is folded back multiple times horizontally with respect to the center line direction of the sheet is exemplified.
- a tobacco sheet having one side of which is approximately the same size as the centerline direction of the object to be filled is wound in a direction orthogonal to the centerline direction of the object to be filled. mentioned.
- the aerosol source 11 is composed of two or more tobacco sheets, for example, a plurality of tobacco sheets each having a size approximately equal to the size in the center line direction of the object to be filled
- a mode in which the material is wound in a direction orthogonal to the center line direction of the material to be filled so as to be arranged concentrically is exemplified.
- Concentrically arranged means that the centers of all the tobacco sheets are arranged at approximately the same position.
- the number of tobacco sheets is not particularly limited, but may be 2, 3, 4, 5, 6, or 7 sheets. Two or more tobacco sheets may all have the same composition or physical properties, or a part or all of each tobacco sheet may have different compositions or physical properties.
- each tobacco sheet may be the same or different.
- the thickness of each tobacco sheet is not limited, but is preferably 150 ⁇ m or more and 1000 ⁇ m or less, more preferably 200 ⁇ m or more and 600 ⁇ m or less, in terms of balance between heat transfer efficiency and strength.
- the aerosol source 11 prepares a plurality of tobacco sheets having different widths, prepares a laminated body in which the width decreases from the first side to the second side, passes the laminated body through a winding tube, and winds and forms the laminated body. It can be manufactured by According to this manufacturing method, the plurality of tobacco sheets extend in the centerline direction and are arranged concentrically around the centerline CL. In this manufacturing method, the laminate is preferably prepared so that a non-contact portion is formed between adjacent tobacco sheets after roll-forming. If there is a non-contact portion (gap) between the plurality of tobacco sheets, which is not in contact with the tobacco sheets, the flavor flow path can be secured and the delivery efficiency of the flavor component can be enhanced.
- the heat from the heater can be transferred to the outer tobacco sheets through the contact portions of the plurality of tobacco sheets, high heat transfer efficiency can be ensured.
- adjacent tobacco sheets are laminated without bonding the entire surfaces of adjacent tobacco sheets, and adjacent tobacco sheets are stacked together.
- the entire or part of the adjacent tobacco sheets are lightly adhered so that they can be separated after roll-forming, thereby preparing a laminate.
- the wrapping paper 12 may be arranged on the end surface of the first side of the laminate.
- Polyols such as glycerin, propylene glycol, and 1,3-butanediol may be added to tobacco sheets.
- the amount added to the tobacco sheet is preferably 5% by mass or more and 50% by mass or less, more preferably 15% by mass or more and 25% by mass or less, relative to the dry mass of the tobacco sheet.
- Tobacco sheets can be appropriately manufactured by known methods such as paper making, slurrying, and rolling. Note that the uniformizing sheet described above can also be used.
- papermaking it can be manufactured by a method including the following steps. 1) Dry tobacco leaves are crushed and extracted with water to separate the water extract and residue. 2) Dry and concentrate the water extract under reduced pressure. 3) Pulp is added to the residue, fiberized with a refiner, and then paper is made. 4) A concentrated solution of the water extract is added to the paper sheet and dried to obtain a tobacco sheet. In this case, a step of removing some components such as nitrosamines may be added (see JP-T-2004-510422).
- the slurry method it can be produced by a method including the following steps.
- a non-woven tobacco sheet manufactured by a method including the following steps can also be used. 1) Mix powdered tobacco leaves and a binder. 2) The mixture is sandwiched between non-woven fabrics. 3) Forming the laminate into a certain shape by heat welding to obtain a non-woven tobacco sheet.
- the types of raw material tobacco leaves used in each of the above methods may be the same as those described for the aerosol source 11 containing cut tobacco.
- the composition of the tobacco sheet is not particularly limited, for example, the content of the tobacco raw materials (tobacco leaves) is preferably 50% by mass or more and 95% by mass or less with respect to the total mass of the tobacco sheet.
- the tobacco sheet may also contain a binder, and examples of such binders include guar gum, xanthan gum, carboxymethylcellulose, sodium salts of carboxymethylcellulose, and the like.
- the amount of the binder is preferably 1% by mass or more and 10% by mass or less with respect to the total mass of the tobacco sheet.
- the tobacco sheet may further contain other additives. Examples of additives include fillers such as pulp.
- the structure of the wrapping paper 12 used for the base material portion 10 is not particularly limited, and can be a general form, for example, one containing pulp as a main component.
- pulp in addition to wood pulp such as softwood pulp and hardwood pulp, non-wood pulp such as flax pulp, hemp pulp, sisal pulp, and esparto, which are generally used for wrapping paper 12 for tobacco products, can be used. It may be obtained by mixing and manufacturing.
- the types of pulp that can be used include chemical pulp, ground pulp, chemi-grand pulp, thermomechanical pulp, and the like prepared by kraft cooking, acid/neutral/alkaline sulfite cooking, soda salt cooking, and the like.
- the winding paper 12 is manufactured by preparing and uniforming the texture in the papermaking process using a fourdrinier paper machine, a cylinder paper machine, a circular and short composite paper machine, and the like. If necessary, a wet strength agent may be added to impart water resistance to the wrapping paper 12, or a sizing agent may be added to adjust the printing condition of the wrapping paper 12. Furthermore, aluminum sulfate, various anionic, cationic, nonionic or amphoteric retention improvers, drainage improvers, papermaking internal additives such as paper strength agents, and dyes, pH adjusters, Papermaking additives such as antifoam agents, pitch control agents, and slime control agents can be added.
- the basis weight of the base paper for the wrapping paper 12 is, for example, usually 20 gsm or more, preferably 25 gsm or more. On the other hand, the basis weight is usually 65 gsm or less, preferably 50 gsm or less, more preferably 45 gsm or less.
- the thickness of the wrapping paper 12 is not particularly limited, and is usually 10 ⁇ m or more, preferably 20 ⁇ m or more, more preferably 30 ⁇ m or more, from the viewpoints of rigidity, air permeability, and ease of adjustment during paper production.
- the thickness of the wrapping paper 12 is usually 100 ⁇ m or less, preferably 75 ⁇ m or less, more preferably 50 ⁇ m or less.
- the shape of the wrapping paper 12 for producing the base material part 10 can be square or rectangular.
- the length of one side can be about 12 mm or more and 70 mm or less. , and a more preferable length is about 23 mm.
- the aerosol source 11 is wound with the wrapping paper 12 in a cylindrical shape, for example, in the circumferential direction, the end of the wrapping paper 12 and the end of the wrapping paper 12 on the opposite side are overlapped by about 2 mm and glued to form a cylindrical paper. It has the shape of a tube in which the aerosol source 11 is filled.
- the size of the rectangular wrapping paper 12 can be determined by the size of the base material portion 10 .
- the paper wrapper 12 may also contain fillers.
- the content of the filler can be 10% by mass or more and less than 60% by mass, preferably 15% by mass or more and 45% by mass or less, based on the total mass of the wrapping paper 12 .
- the filler content is preferably 15% by mass or more and 45% by mass or less in a preferable basis weight range (25 gsm or more and 45 gsm or less).
- the filler content is preferably 15 mass % or more and 45 mass % or less, and when the basis weight is 35 gsm or more and 45 gsm or less, the filler content is 25 mass % or more and 45 mass % or less. is preferred.
- a filler calcium carbonate, titanium dioxide, kaolin, and the like can be used, but from the viewpoint of enhancing flavor and whiteness, it is preferable to use calcium carbonate.
- auxiliary agents other than base paper and fillers may be added to the wrapping paper 12.
- a water resistance improver may be added to improve water resistance.
- Water resistance improvers include wet strength agents (WS agents) and sizing agents.
- wet strength agents include urea formaldehyde resin, melamine formaldehyde resin, polyamide epichlorohydrin (PAE), and the like.
- sizing agents include rosin soap, alkyl ketene dimer (AKD), alkenyl succinic anhydride (ASA), and highly saponified polyvinyl alcohol having a degree of saponification of 90% or more.
- a paper strength agent may be added, and examples thereof include polyacrylamide, cationic starch, oxidized starch, CMC, polyamide epichlorohydrin resin, polyvinyl alcohol, and the like.
- oxidized starch improves air permeability (Japanese Patent Application Laid-Open No. 2017-218699).
- a coating agent may be added to at least one of the front and back sides of the wrapping paper 12 .
- the coating agent is not particularly limited, but a coating agent capable of forming a film on the paper surface and reducing liquid permeability is preferred.
- alginic acid and its salts e.g. sodium salts
- polysaccharides such as pectin
- cellulose derivatives such as ethyl cellulose, methyl cellulose, carboxymethyl cellulose, nitrocellulose
- starch and derivatives thereof e.g. carboxymethyl starch, hydroxyalkyl starch and cationic starch
- ether derivatives such as starch acetate, starch phosphate and ester derivatives such as starch octenylsuccinate).
- the cooling part 20 is arranged adjacent to the base material part 10 and the filter part 30, and is a member formed so that the cross section of a cylinder or the like is hollow (cavity) by winding the forming paper 21 thereon.
- the size of the cooling part 20 in the center line direction can be appropriately changed according to the size of the product, but it is usually 5 mm or more, preferably 10 mm or more, and more preferably 15 mm or more. Also, the size of the cooling part 20 in the center line direction is usually 35 mm or less, preferably 30 mm or less, and more preferably 25 mm or less.
- the size of the cooling unit 20 in the center line direction By setting the size of the cooling unit 20 in the center line direction to the above-described lower limit or more, it is possible to secure a sufficient cooling effect and obtain a good flavor. It is possible to suppress the loss caused by the aerosol adhering to the forming paper 21 .
- the cooling part 20 preferably has a large inner surface area.
- the forming paper 21 forming the cooling section 20 may be formed by a thin sheet of material that is crumpled to form channels and then pleated, gathered and folded. The more folds or folds in a given volume of the element, the greater the total surface area of cooling section 20 .
- the thickness of the molding paper 21 is not particularly limited, and may be, for example, 5 ⁇ m or more and 500 ⁇ m or less, or 10 ⁇ m or more and 250 ⁇ m or less.
- the material of the molding paper 21 is not particularly limited.
- pulp may be the main component, and polyethylene, polypropylene, polyvinyl chloride, polyethylene terephthalate, polylactic acid, cellulose acetate, and aluminum foil may be used. may be the main component, or any combination thereof.
- the cooling part 20 is provided with openings V (also called “ventilation filter (Vf)" in this technical field) concentrically and circumferentially.
- the opening V exists in a region where air can flow from the outside of the stick 1 , in other words, in a region where the stick 1 is held by the holding portion 140 of the suction device 100 and protrudes from the opening 142 .
- the existence of the openings V allows air to flow into the interior of the cooling section 20 from the outside during suction, and the temperature of steam or air flowing in from the base material section 10 can be lowered. Furthermore, by setting the position where the cooling unit 20 is provided within a region of 4 mm or more in the direction of the cooling unit 20 from the boundary between the cooling unit 20 and the filter unit 30, not only the cooling capacity is improved, but also the heat generated by heating It is possible to suppress the retention of the substance (product) in the cooling unit 20 and improve the delivery amount of the product. It should be noted that the vapor generated from the aerosol as the condensation nucleus by heating the base material portion 10 can be liquefied by contacting the air from the outside and the temperature is lowered, and the generation of the aerosol can be accelerated. .
- the cooling unit 20 is an example of a cooling unit that cools vapor generated by heating the base material to generate an aerosol.
- the number of hole groups may be one, or two or more.
- the number of hole groups may be one, or two or more.
- the tip paper 40 has the openings V provided in the cooling portion 20. It is preferable that an opening be provided at a position directly above.
- tipping paper 40 provided with openings overlapping with the openings V may be prepared and wound. It is preferable to drill a hole through the cooling part 20 and the tipping paper 40 at the same time after making the stick 1 without the stick 1 .
- the region where the opening V exists is not particularly limited as long as it is a region of 4 mm or more in the direction of the cooling unit 20 from the boundary between the cooling unit 20 and the filter unit 30 from the viewpoint of improving the product delivery by heating. Furthermore, from the viewpoint of improving product delivery, the area is preferably 4.5 mm or more, more preferably 5 mm or more, and even more preferably 5.5 mm or more. In addition, from the viewpoint of ensuring the cooling function, the region where the opening V exists is preferably a region of 15 mm or less, more preferably a region of 10 mm or less, and further preferably a region of 7 mm or less. .
- the region where the opening V exists is preferably a region of 24 mm or more in the direction from the end surface of the first side of the stick 1 to the cooling part 20 side, and 24.5 mm
- the area is preferably 25 mm or more, more preferably 25.5 mm or more.
- the region where the opening V exists is preferably a region of 35 mm or less, more preferably a region of 30 mm or less, and even more preferably a region of 27 mm or less. .
- the boundary between the cooling part 20 and the base material part 10 considering the boundary between the cooling part 20 and the base material part 10 as a reference, if the size of the cooling part 20 in the center line direction is 20 mm or more, the area where the opening V exists will ensure the cooling function. From the point of view, from the boundary between the cooling part 20 and the base material part 10, the area is preferably 5 mm or more in the direction of the cooling part 20 side, more preferably 10 mm or more, and 13 mm or more. is more preferred. In addition, from the viewpoint of improving the delivery of the product by heating, the region where the opening V exists is a region of 16 mm or less in the direction of the cooling part 20 from the boundary between the cooling part 20 and the base material part 10. is preferably 15.5 mm or less, more preferably 15.5 mm or less, and particularly preferably 14.5 mm or less.
- the apertures V are provided so that the ratio of air inflow through the apertures V is 10% by volume or more and 90% by volume or less when sucked at 17.5 ml/sec by an automatic smoking machine.
- This "air inflow ratio” is the volume ratio of the air that has flowed in from the opening V when the ratio of the air sucked from the mouth end is 100% by volume.
- the air inflow ratio is preferably 50% by volume or more and 80% by volume or less, more preferably 55% by volume or more and 75% by volume or less.
- the number of holes V per hole group is selected from a range of 5 to 50, and the diameter of the holes V is set to a range of 0.1 mm to 0.5 mm. can be selected from and achieved by a combination of these selections.
- the air inflow ratio can be measured by a method conforming to ISO9512 using an automatic smoking machine (for example, a single bottle automatic smoking machine manufactured by Borgwaldt).
- the configuration of the tipping paper 40 is not particularly limited, and can be in a general form, and for example, can include pulp as a main component.
- pulp in addition to being made from wood pulp such as softwood pulp and hardwood pulp, non-wood pulp such as flax pulp, hemp pulp, sisal pulp, and esparto, which are generally used for cigarette paper, are mixed. and obtained by manufacturing. These pulps may be used alone or in combination of multiple types at any ratio.
- the tipping paper 40 may be composed of one sheet, or may be composed of a plurality of sheets or more.
- As the form of pulp chemical pulp, ground pulp, chemi-grand pulp, thermomechanical pulp, etc.
- the tip paper 40 may be manufactured by a manufacturing method to be described later, or may be a commercially available product.
- the shape of the tipping paper 40 is not particularly limited, and can be square or rectangular, for example.
- the basis weight of the tipping paper 40 is not particularly limited, but is usually 32 gsm to 60 gsm, preferably 33 gsm to 55 gsm, more preferably 34 gsm to 53 gsm.
- the air permeability of the tipping paper 40 is not particularly limited, it is generally 0 Coresta unit or more and 30000 Coresta unit or less, and preferably more than 0 Coresta unit and 10000 Coresta unit or less. Air permeability is a value measured in accordance with ISO 2965:2009, and is expressed as the flow rate (cm 3 ) of gas passing through an area of 1 cm 2 per minute when the pressure difference between both sides of the paper is 1 kPa. be done.
- One Coresta unit (1 Coresta unit, 1 CU) is cm 3 /(min ⁇ cm 2 ) under 1 kPa.
- the chipping paper 40 may contain fillers other than the above pulp, for example, metal carbonates such as calcium carbonate and magnesium carbonate, metal oxides such as titanium oxide, titanium dioxide and aluminum oxide, barium sulfate, metal sulfates such as calcium sulfate, metal sulfides such as zinc sulfide, quartz, kaolin, talc, diatomaceous earth, gypsum, etc.; preferably contains These fillers may be used singly or in combination of two or more.
- the chipping paper 40 may contain various auxiliary agents, for example, a water resistance improver to improve water resistance.
- Water resistance improvers include wet strength agents (WS agents) and sizing agents.
- wet strength agents include urea formaldehyde resin, melamine formaldehyde resin, polyamide epichlorohydrin (PAE), and the like.
- sizing agents include rosin soap, alkyl ketene dimer (AKD), alkenyl succinic anhydride (ASA), and highly saponified polyvinyl alcohol having a degree of saponification of 90% or more.
- a coating agent may be added to at least one of the front and back sides of the tip paper 40 .
- the coating agent is not particularly limited, but a coating agent capable of forming a film on the paper surface and reducing liquid permeability is preferred.
- a portion of the outer surface of tipping paper 40 may be covered with a rip release material.
- the lip release material is configured to assist the user to easily release the contact between the lips and the tipping paper 40 without substantially sticking when the user holds the filter portion 30 of the stick 1 in his/her mouth.
- means material that is Lip release materials may include, for example, ethyl cellulose, methyl cellulose, and the like.
- the outer surface of the tipping paper 40 may be coated with a rip release material by applying an ethylcellulose-based or methylcellulose-based ink to the outer surface of the tipping paper 40 .
- the filter section 30 is connected to the second side of the cooling section 20 via tip paper 40 .
- the tip paper 40 connects (joins) the second end of the cooling unit 20 and the first end of the filter unit 30 by winding them together.
- Filter section 30 has filter 31 as a main component.
- the filter 31 is not particularly limited as long as it has general filter functions.
- General functions of filters include, for example, adjusting the amount of air mixed when inhaling aerosols, etc., reducing flavor, reducing nicotine and tar, etc., but having all of these functions is not possible. don't need it.
- the aerosol source 11 falls off while suppressing the filtering function.
- the filter 31 usually has a filter material, and the filter material is, for example, formed into a columnar shape using a filler such as cellulose acetate fiber, acetate fiber, charcoal fiber, non-woven fabric, or pulp paper as a filter material. Moreover, the aspect using the paper filter filled with the sheet-like pulp paper may be sufficient.
- the density of the filter material is not particularly limited, it is usually 0.10 g/cm 3 or more and 0.25 g/cm 3 or less, preferably 0.11 g/cm 3 or more and 0.24 g/cm 3 or less. More preferably, it is 0.23 g/cm 3 or more and 0.23 g/cm 3 or less.
- filter 31 may comprise a crushable additive release container (eg, capsule) with a crushable outer shell such as gelatin.
- the form of the additive release container such as a capsule is not particularly limited, and known forms may be employed. In the case of capsules, when broken by the user before, during, or after use, it releases the liquid or substance contained within the capsule (usually a flavoring agent), which in turn releases the stick. It is carried by the aerosol during use and then dispersed into the surrounding environment.
- the shape of the capsule is not particularly limited, and may be, for example, an easily breakable capsule, preferably spherical.
- the additive contained in the capsule may contain any additive, but it is particularly preferable to contain a flavoring agent and activated carbon.
- one or more materials may be added as additives to help filter the aerosol.
- the form of the additive is not particularly limited, it is usually liquid or solid.
- easily breakable capsules and methods for producing the same may be well-known ones.
- Flavoring agents may be, for example, menthol, spearmint, peppermint, fenugreek, cloves, medium-chain triglycerides (MCT), etc., and one or a combination thereof may be used.
- the filter further contains other components such as inorganic fine powder (kaolin, talc, diatomaceous earth, quartz, calcium carbonate, barium sulfate, titanium oxide, alumina, etc.), heat stabilizer (alkali or alkaline earth metal salts, etc.), coloring agents, whiteness improvers, oils, yield improvers, sizing agents, biodegradation or photodegradation accelerators (anatase type titanium oxide, etc.), natural polymers or their derivatives (cellulose powder, etc.), etc. You can stay. Other components can be used individually or in combination of 2 or more types.
- the cross section of the filter 31 of the filter part 30 is substantially circular, and the diameter of the circle can be changed according to the size of the product.
- the cross section is preferably 8.5 mm or less, and more preferably 5.0 mm or more and 8.0 mm or less. If the cross section is not circular, the above diameter is assumed to be a circle having the same area as that of the cross section, and the diameter of that circle is applied.
- the length of the perimeter of the cross section of the filter 31 can be appropriately changed according to the size of the product, but it 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. It is more preferably 16.0 mm or more and 25.0 mm or less.
- the size of the filter part 30 in the center line direction can be appropriately changed according to the size of the product. It is more preferably 25.0 mm or less.
- the shape and dimensions of the filter 31 and other structures included in the filter section 30 can be appropriately adjusted so that the shape and dimensions of the filter section 30 fall within the above ranges.
- the ventilation resistance per 120 mm of the size of the filter part 30 in the center line direction is not particularly limited, but is usually 40 mmH 2 O or more and 300 mmH 2 O or less, preferably 70 mmH 2 O or more and 280 mmH 2 O or less, It is more preferably 90 mmH 2 O or more and 260 mmH 2 O or less.
- the airflow resistance is measured according to the ISO standard method (ISO6565) using, for example, a Cerulean filter airflow resistance meter.
- the airflow resistance of the filter section 30 is determined by the air flow rate (17.5 cc/min) when air is flown from the first side to the second side in a state in which air does not pass through the side surface of the filter section 30. Refers to the pressure difference between the first side and the second side. Units are generally expressed in mmH2O .
- the filter section 30 from the viewpoint of improving the strength and structural rigidity, it is preferable to include a winding paper 32 around which the filter 31 and the like are wound.
- the form of the web 32 is not particularly limited, and may have one or more rows of adhesive-containing seams.
- the adhesive may comprise a hot melt adhesive, and the hot melt adhesive may comprise polyvinyl alcohol.
- the paper roll is preferably wound by combining these two or more segments.
- the material of the paper roll 32 is not particularly limited, and known materials can be used, and it may contain a filler such as calcium carbonate.
- the thickness of the paper roll 32 is not particularly limited, and is usually 20 ⁇ m or more and 140 ⁇ m or less, preferably 30 ⁇ m or more and 130 ⁇ m or less, and more preferably 30 ⁇ m or more and 120 ⁇ m or less.
- the basis weight of the paper roll 32 is not particularly limited, and is usually 20 gsm or more and 100 gsm or less, preferably 22 gsm or more and 95 gsm or less, and more preferably 23 gsm or more and 90 gsm or less.
- the web 32 may or may not be coated, but is preferably coated with a desired material from the viewpoint of imparting functions other than strength and structural rigidity.
- the filter part 30 may further include a center hole part having one or more hollow parts.
- FIG. 3(a) shows a diagram including the center hole portion 35 as a schematic diagram showing a longitudinal section of the filter portion 30 of the non-combustion heating stick according to the second embodiment.
- the left side of FIG. 3A is the cooling unit 20 side (first side), and the right side is the end side (second side) where the user holds the liquid in his/her mouth for suction.
- the center hole portion 35 is normally arranged closer to the cooling section 20 than the filter 31 as shown in the drawing, and preferably adjacent to the cooling section 20 .
- the center hole portion 35 is composed of a filling layer 33 having one or more hollow portions and an inner winding paper 34 covering the filling layer 33 .
- the center hole portion 35 has a function of increasing the strength of the filter portion 30 .
- the filling layer 33 is, for example, filled with cellulose acetate fibers at a high density, and is hardened by adding a plasticizer containing triacetin in an amount of 6% by mass or more and 20% by mass or less based on the mass of the cellulose acetate. It can be a rod of .0 mm or less. Since the filling layer 33 has a high packing density of fibers, air and aerosol flow only in the hollow portion and hardly flow in the filling layer 33 during suction. Since the filling layer 33 inside the center hole portion 35 is a fiber filling layer, the feeling of touch from the outside during use hardly causes the user to feel uncomfortable. Note that the center hole portion 35 may not have the inner paper roll 34 and may retain its shape by thermoforming.
- the center hole portion 35 and the filter 31 may be connected by, for example, an outer roll paper 36 .
- the outer paper web 36 may be, for example, a cylindrical paper.
- the base material part 10, the cooling part 20, and the connected center hole part 35 and filter 31 may be connected by chip paper 40, for example. These connections are made, for example, by coating the inner surface of the outer roll paper 36 with glue such as vinyl acetate, inserting the base part 10, the cooling part 20, the connected center hole part 35 and the filter 31, and winding them. be able to. These may be divided and connected multiple times with multiple pieces of paper.
- the inner roll paper 34 and the outer roll paper 36 used in the center hole portion 35 can be the same as the roll paper 32 in terms of the form, material, thickness, basis weight, and the like. Also, the inner web 34 may not be used.
- FIG. 3(b) is a schematic diagram showing a longitudinal section of the filter portion 30 of the non-combustion heating stick according to the third embodiment, showing a view in which a cavity 37 is formed between the filters 31.
- the left side of FIG. 3(b) is the cooling unit 20 side (first side), and the right side is the end side (second side) where the user sucks.
- the filter 31 forms two segments and there is a hollow cavity 37 between the two filters.
- the cavity 37 is formed by winding the web 32 with the two filter segments in the desired positions.
- Cavity 37 may incorporate a crushable additive release container (eg, capsule) containing a crushable outer shell, such as gelatin, similar to that contained in filter 31 . If one capsule is placed in cavity 37 , the size of the capsule should be 5 mm or less and smaller than the inner diameter of cavity 37 . Also, when two or more capsules are placed in the cavity 37 , the size of the capsules should be 3.5 mm or less and smaller than the inner diameter of the cavity 37 . A porous adsorbent such as activated carbon, which will be described later, may be placed in the cavity 37 .
- a crushable additive release container eg, capsule
- a crushable outer shell such as gelatin
- porous adsorbent In the embodiments described above, at least one of the base material portion 10, the cooling portion 20, and the filter portion 30 contains a porous adsorbent.
- a porous sorbent is typically placed in the stick 1 where it will come into contact with the aerosol. It is preferably contained in at least one of the cooling section 20 and the filter section 30 , and most preferably contained in at least the filter section 30 .
- the porous adsorbent is not particularly limited, and may be inorganic or organic.
- adsorbents examples include inorganic porous adsorbents such as activated carbon, sepiolite, palygorskite, zeolite, activated carbon fiber, activated alumina, sepiolite mixed paper, silica gel, activated clay, permiculite, and diatomaceous earth.
- organic porous adsorbents include polymeric porous bodies such as pulp, various fibers, and ion-exchange resins.
- aniline compounds, hydrazine compounds, and amino compounds that are reactive with aldehydes are added to fine porous adsorbents from the viewpoint of further removing flavor and taste inhibiting components such as aldehydes.
- activated carbon is preferable from the viewpoint that it does not adversely affect the flavor and taste, improves the flavor and taste in some cases, and simultaneously adsorbs flavor and taste inhibiting components such as aldehydes.
- activated carbon An example of activated carbon will be described below.
- Activated carbon has a pore diameter of 5000 nm from the viewpoint of increasing the ratio of pores corresponding to the size of the aerosol particles (usually 1 nm or more and 100 ⁇ m or less) generated by the non-combustion heating stick in order to increase the adsorption of aldehydes and the like. It is preferable that the ratio of the pore volume with a pore diameter of 50 nm or more and 5000 nm or less (macropore) to the total pore volume is 15% or more. It is more preferably 20% or more, further 30% or more, particularly 40% or more.
- the ratio of the pore volume having a pore diameter of 50 nm or more and 5000 nm or less is preferably 99% or less, and particularly preferably 95% or less.
- the "ratio of the pore volume with a pore diameter of 50 nm or more and 5000 nm or less to the total pore volume with a pore diameter of 5000 nm or less" is measured as follows. By the nitrogen gas adsorption method (BET multipoint method), the total pore volume with a pore size of 5000 nm or less, and the pore size distribution with a pore size of less than 2 nm (micropores) and a pore size of 2 nm or more and 50 nm or less (mesopores). Measure.
- the cumulative pore volume with a pore diameter of 6.5 nm or more and 5000 nm or less was measured by a mercury intrusion method, and the results of the two methods were combined to obtain a pore diameter of 50 nm or more and 5000 nm or less with respect to the total pore volume with a pore diameter of 5000 nm or less.
- activated carbon has a pore diameter of 50 nm or more and 5000 nm or less (macropore ) preferably has a pore volume of 0.2 cm 3 /g or more and 0.9 cm 3 /g or less.
- the pore volume in the above range is preferably 0.3 cm 3 /g or more, particularly preferably 0.4 cm 3 /g or more. Also, it is more preferably 0.8 cm 3 /g or less, further preferably 0.7 cm 3 /g or less.
- Pore volume with a pore diameter of 50 nm or more and 5000 nm or less (macropore) is determined by pore size distribution measurement using a mercury intrusion method.
- the pore volume ratio of the (micropores) of the activated carbon is preferably not too large, so the ratio of the pore volume with a pore diameter of 50 nm or less to the total pore volume with a pore diameter of 5000 nm or less is 70% or less. is preferred, and more preferably 65% or less.
- macropores with a pore diameter in the range of 50 nm or more and 5000 nm or less exhibit the main function of activated carbon, so even if the ratio of the pore volume with a pore diameter of less than 2 nm is 0%, sometimes can be used.
- the ratio of the pore volume with a pore diameter of less than 2 nm is obtained from the pore volume with a pore diameter of less than 2 nm (micropores) by the nitrogen gas adsorption method and the total pore volume with a pore diameter of 5000 nm or less by the nitrogen gas adsorption method. be done.
- the BET specific surface area of activated carbon is usually 600 m 2 /g or more and 1800 m 2 /g or less.
- the BET specific surface area of many activated carbons is 800 m 2 /g or more and 1300 m 2 /g or less, and these activated carbons may be used.
- the activated carbon that can be used in this embodiment preferably has a cumulative 10% by volume particle diameter (particle diameter D10) of 250 ⁇ m or more and 1200 ⁇ m or less. Moreover, the cumulative 50% by volume particle diameter (particle diameter D50) of the activated carbon particles is preferably 350 ⁇ m or more and 1500 ⁇ m or less. D10 and D50 are measured by a laser diffraction scattering method.
- Source materials include carbonaceous materials such as wood, lignite, coal, coconut husks or shells, peat, pitch, polymers, cellulosic fibers, polymer fibers, and the like. Adsorption performance can be imparted to the source material to produce activated carbon by any suitable process such as physical activation (activation) or chemical activation (activation).
- activation physical activation
- a source material is a) carbonized, b) activated/oxidized, or c) carbonized and activated/oxidized to activated carbon using a hot gas.
- Carbonization processes involve pyrolyzing a source material at elevated temperatures, generally in the range of about 600° C. to about 900° C., in the absence of oxygen.
- Activation/oxidation involves exposing the carbonized material to an oxidizing atmosphere such as steam, carbon dioxide or oxygen at temperatures above 250°C. Activation/oxidation temperatures generally range from about 600°C to about 1200°C. c) carbonization and activation/oxidation performs both a) a carbonization process and b) activation/oxidation.
- an oxidizing atmosphere such as steam, carbon dioxide or oxygen
- Chemical activation involves soaking the raw raw material with a predetermined chemical such as an acid, base or salt such as phosphoric acid, potassium hydroxide, sodium hydroxide, calcium chloride, or zinc chloride. is included.
- the chemical-impregnated material is then carbonized at temperatures generally lower than physical activation carbonization.
- the temperature for chemically activated carbonization can range from about 450°C to about 900°C. Carbonization and activation can occur simultaneously.
- activated carbon with desired pore characteristics and the like can be produced.
- a commercially available product suitable for the stick to be used can be selected and used. Examples of activated carbon that can be used in this embodiment are shown in Table 1 below along with the main physical properties of each activated carbon.
- the pore distribution is the ratio of the pore volume with a pore diameter of 50 nm or more and 5000 nm or less and the ratio of the pore volume with a pore diameter of less than 2 nm to the total pore volume with a pore diameter of 5000 nm or less.
- the porous adsorbent used is preferably activated carbon having desired pore physical properties, etc., as described above. Although there are no particular restrictions on the locations and modes in which the porous adsorbent such as activated carbon is present, the main locations and modes of presence are as follows. 1 to 3, description of activated carbon is omitted.
- Activated carbon is most typically contained inside filter 31 . In this case, it is usually contained within the filter material.
- the activated carbon may be contained uniformly within the filter, or may be provided with a concentration gradient, and may be distributed at specific locations within the filter. High concentrations may be present. When providing a concentration gradient or increasing the concentration at a specific position, it is preferable to remove the flavor and taste inhibiting components in the product at a position farther from the user. 1 side).
- activated carbon can be present in any segment, but as described above, it is possible to remove flavor and taste inhibiting components such as aldehydes at a position far from the user. In view of this, it is preferable that a large amount of activated carbon is present in the segment on the cooling part 20 side (first side) in the filter 31 .
- Activated carbon may be contained in the paper 32 around which the filter 31 is wound.
- it may be arranged on the surface of the paper roll 32 facing the filter 31 .
- the activated carbon may be adhered to the surface of the paper roll 32 facing the filter with an adhesive.
- Activated carbon may exist inside the hollow part of the filter part 30 .
- the hollow portion may be the hollow portion provided in the center hole portion 35 shown in the schematic diagram of FIG. 3A, or may be another hollow portion. Alternatively, it may be in a hollow portion of a through hole penetrating through the filter portion 30 . In these cases, the activated carbon may fill the entire hollow portion or may fill a part of the hollow portion.
- the hollow portion has an opening with respect to the cooling portion 20 as shown in FIG. 3A, it is preferable to close the opening of the hollow portion with thin paper, filter material, or the like so as not to leak to the cooling portion 20 .
- Activated carbon may be present on the surface of the hollow portion of filter portion 30 .
- the hollow portion may be the hollow portion provided in the center hole portion 35 shown in FIG. 3(a), or may be another hollow portion.
- the activated carbon may be adhered to the hollow portion side of the filling layer 33 in the center hole portion with an adhesive or the like, or the activated carbon may be molded so as to cover part or all of the hollow portion of the filling layer 33. good.
- Filter 31 has a plurality of segments, and in cavities 37 formed between segments Activated carbon is formed between filters 31 consisting of a plurality of segments, as shown in the schematic diagram of FIG. 3(b). It may be placed in a closed cavity 37 . In this case, the activated carbon may be granulated in the cavity 37, or the activated carbon may be molded into the shape of the cavity and arranged in the order filter-activated carbon filter.
- the filter 31 has two segments in FIG. 3(b), the filter 31 may have three or more segments, and the activated carbon may be placed in each of a plurality of cavities 37 formed between the respective filters.
- Activated carbon may exist in the cooling section 20 .
- the cooling part 20 has the openings V, it is possible to use activated carbon with a particle diameter larger than the width of the openings V, or activated carbon formed to be larger than the width of the openings V, from the viewpoint of preventing it from coming out of the stick. preferable.
- a layer of porous molded body made of activated carbon may be arranged between the cooling part 20 and the filter part 30 so as to cover the filter 31, or the molded body may be placed between the cooling part 20 and the base material part 10. may be placed.
- the cooling part 20 may be present in the forming paper 21 for forming.
- activated carbon with a particle size smaller than the thickness of the molding paper 21 may be used during manufacturing and present in the paper layers of the molding paper 21, and may adhere to the inside of wrinkles, folds, etc. during molding with an adhesive. It may be present together with the treatment agent when applying a surface treatment agent such as a coating agent. Additionally, a portion of the activated carbon may be present with the aerosol source 11 or the like in the substrate portion 10 to contact the heating products in the substrate portion and the activated carbon within the substrate portion.
- the amount of the filter 31 added to the filter material is 15.0% as the value of "specific surface area of activated carbon x weight of activated carbon/cross-sectional area of filter material in the direction perpendicular to the ventilation direction" for one non-combustion heating stick. 0 m 2 /cm 2 or more and 80.0 m 2 /cm 2 or less are preferable. This value is more preferably 17.0 m 2 /cm 2 or more, and even more preferably 35.0 m 2 /cm 2 or more.
- the surface area of the activated carbon per unit cross-sectional area is within the preferable range such as the above range, so that the desired amount of the component generated by heating can be delivered to the user, and the desired amount can be delivered to the user. It can give flavor.
- the surface area of activated carbon per unit cross-sectional area can be adjusted, for example, by adjusting the specific surface area of activated carbon, its addition amount, and the cross-sectional area of the filter material in the direction perpendicular to the ventilation direction.
- the surface area of the activated carbon per unit cross-sectional area can be calculated based on the specific surface area of the activated carbon added to the filter material of one non-combustion heating stick, the weight of the added activated carbon, and the cross-sectional area of the filter material.
- the activated carbon is not uniformly dispersed in the filter material to be added, and it is difficult to satisfy the above range in all cross sections of the filter material (cross sections perpendicular to the ventilation direction).
- the average value over the entire cross section should be within the above range.
- the amount of activated carbon added per unit length in the ventilation direction of the filter material added with activated carbon is preferably 5 mg/cm or more and 50 mg/cm or less, and is preferably 8 mg/cm or more and 40 mg/cm or less. It is more preferably 10 mg/cm or more and 35 mg/cm or less.
- the amount of activated carbon to be added is, for example, 4.0 mg or more and 24.0 mg or less, preferably 4.5 mg or more and 23.0 mg or less, and 10.5 mg or more, in terms of the weight of the entire filter part 30. , 22.0 mg or less.
- SYMBOLS 1 non-combustion heating stick, 10... base material part, 11... aerosol source, 20... cooling part, 30... filter part, 31... filter, 33... filling layer, 35... center hole part, 37... cavity, 40... chip paper
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Abstract
Description
また、特許文献2には、喫煙物品であって、喫煙可能材料と、前記喫煙可能材料の下流にある活性炭材料であって、前記活性炭材料が約0.9以下の細い微小孔容積の合計微小孔容積に対する比を持ち、また前記活性炭材料が昇温脱離法によって決定された約5000マイクロモル/グラム以下の濃度で表面酸素を含有する喫煙物品が記載されている。
なお、特許文献1及び特許文献2には多孔性カーボン材料、活性炭材料が使用されているが、具体的な記載、実施例はいずれも燃焼式たばこが記載されている。
本発明は、加熱温度が高温となった非燃焼加熱型スティックにおいて、ユーザの喫味満足度を維持しながら、アルデヒド類等の香喫味阻害成分を除去することを目的とする。
第2の特徴は、前記多孔質吸着剤が活性炭であってもよい。
第3の特徴は、前記活性炭は、細孔径5000nm以下の全細孔容積に対する細孔径50nm以上5000nm以下の細孔容積の比率が15%以上であってもよい。
第4の特徴は、前記活性炭は、細孔径50nm以上5000nm以下の細孔容積が0.2cm3/g以上0.9cm3/g以下であってもよい。
第5の特徴は、前記活性炭は、細孔径5000nm以下の全細孔容積に対する細孔径2nm未満の細孔容積の比率が70%以下であってもよい。
第6の特徴は、前記活性炭のBET比表面積が、600m2/g以上1800m2/g以下であってもよい。
第7の特徴は、前記多孔質吸着剤が、前記スティック内のエアロゾルと接する場所に配置されてもよい。
第8の特徴は、前記多孔質吸着剤が、次の1)乃至5)のいずれかの箇所の1つ以上に存在してもよい。
1)前記フィルタ部のフィルタ内
2)前記フィルタを巻き取る巻取紙の紙層中又は当該フィルタに対向する面
3)前記フィルタ部の中空部内
4)前記中空部に面する表面
5)前記フィルタが複数のセグメントを有し、当該セグメント間に形成されるキャビティ内
第9の特徴は、エアロゾル源を含む基材部と、前記基材部が加熱されることで生成されたエアロゾルが通過する部位に配置されるフィルタ部と、を備え、前記基材部、前記フィルタ部の少なくともいずれかが、細孔径5000nm以下の全細孔容積に対する細孔径50nm以上5000nm以下の細孔容積の比率が15%以上である活性炭を含む、非燃焼加熱型スティックであってもよい。
第2の特徴によれば、多孔質吸着剤として活性炭以外を使用する場合と比較して、アルデヒド類等の香喫味阻害成分が選択的に低減しうる非燃焼加熱型スティックを提供することができる。
第3の特徴によれば、細孔径5000nm以下の全細孔容積に対する細孔径50nm以上5000nm以下の細孔容積の比率が15%未満である活性炭を使用する場合と比較して、エアロゾルとの親和性が高く、香喫味等に良い影響を与え得る非燃焼加熱型スティックを提供することができる。
第4の特徴によれば、細孔径50nm以上5000nm以下の細孔容積が0.2cm3/g未満、又は、0.9cm3/gを超える活性炭を使用する場合と比較して、エアロゾルとの親和性が高く、香喫味等に良い影響を与え得る非燃焼加熱型スティックを提供することができる。
第5の特徴によれば、細孔径5000nm以下の全細孔容積に対する細孔径2nm未満の細孔容積の比率が70%を超える活性炭を使用する場合と比較して、アルデヒド類等の香喫味阻害成分が選択的に低減しうる非燃焼加熱型スティックを提供することができる。
第6の特徴によれば、BET比表面積が、600m2/g未満、又は1800m2/gを超える活性炭を使用する場合と比較して、アルデヒド類等の香喫味阻害成分が選択的に低減しうる非燃焼加熱型スティックを提供することができる。
第7の特徴によれば、多孔質吸着剤をスティック内のエアロゾルと接触しない場所に配置させる場合と比較して、アルデヒド類等の香喫味阻害成分が選択的に低減しうる非燃焼加熱型スティックを提供することができる。
第8の特徴によれば、多孔質吸着剤を使用しない場合と比較して、アルデヒド類等の香喫味阻害成分が選択的に低減しうる非燃焼加熱型スティックを提供することができる。
第9の特徴によれば、ユーザの喫味満足度を維持しながら、アルデヒド類等の香喫味阻害成分が優先的に除去される非燃焼加熱型スティックを提供することができる。
図1は、第1実施形態に係る非燃焼加熱型スティック1の縦断面を示す図である。図2は、第1実施形態に係る吸引装置100の構成例を模式的に示す模式図である。
第1実施形態に係る非燃焼加熱型スティック(以下、「スティック」と称する場合がある。)1は、基材部10と冷却部20とフィルタ部30とを備える。基材部10は、円柱状に形成されている。以下、基材部10の中心線CLの方向を、「中心線方向」と称する場合がある。スティック1は、中心線方向に、基材部10、冷却部20、フィルタ部30の順に並べた状態で巻かれることで、これらを一体化する、チップペーパー40をさらに備える。以下、中心線方向の一方の端部側(図1においては左側)を第1側、中心線方向の他方の端部側(図1においては右側)を第2側と称する場合がある。第1側は吸引装置100に挿入される方の端部側である。第2側は第1側と反対側であり、ユーザが吸引のために口で咥える端側である。また、中心線方向に沿った断面を「縦断面」と称し、中心線方向に直交する面にて切断した断面を「横断面」と定義する。
第1実施形態に係るスティック1は、非燃焼加熱式の吸引装置100にて使用される。図2に示すように、吸引装置100は、電力を蓄積するとともに、吸引装置100の各構成要素に電力を供給する電源部111と、吸引装置100に関する各種情報を検出するセンサ部112と、情報をユーザに通知する通知部113とを備えている。また、吸引装置100は、吸引装置100の動作のための各種情報を記憶する記憶部114と、吸引装置100と他の装置との間で情報を送受信するための通信部115と、吸引装置100内の動作全般を制御する制御部116とを備えている。また、吸引装置100は、スティック1を加熱する加熱部121と、スティック1を保持する保持部140と、内部空間141を外部に連通する開口142と、加熱部121から吸引装置100の他の構成要素への伝熱を防止する断熱部144とを備えている。吸引装置100においては、保持部140にスティック1が保持された状態で、ユーザによる吸引が行われる。
基材部10は、加熱されることでエアロゾルが生成される蒸気を生じるエアロゾル源11と、エアロゾル源11の外周を覆う巻紙12とを有している。図1の基材部10は、エアロゾル源を含む基材部の一例である。基材部10は、エアロゾル源11が巻紙12に巻かれることで円柱状に形成されている。エアロゾル源11は、例えば、たばこ刻み又はたばこ原料を、粒状、シート状、又は粉末状に成形した加工物などの、たばこ由来のものであってもよい。また、エアロゾル源11は、たばこ以外の植物(例えばミント、ハーブ等)から作られた、非たばこ由来のものを含んでいてもよい。一例として、エアロゾル源11は、メントール等の香料成分を含んでいてもよい。吸引装置100が医療用吸入器である場合、エアロゾル源11は、患者が吸入するための薬剤を含んでもよい。なお、エアロゾル源11は固体に限られるものではなく、例えば、グリセリン及びプロピレングリコール等の多価アルコール、並びに水等の液体であってもよい。基材部10の少なくとも一部は、スティック1が図2に示す保持部140に保持された状態において、保持部140の内部空間141に収容される。
また、中心線方向において、スティック1の大きさに対する基材部10の大きさの割合は、特段制限されないが、デリバリー量とエアロゾル温度のバランスの観点から、通常10%以上であり、20%以上であることが好ましく、25%以上であることがより好ましく、30%以上であることがさらに好ましい。また、スティック1の大きさに対する基材部10の大きさの割合は、通常80%以下であり、70%以下であることが好ましく、60%以下であることがより好ましく、50%以下であることがさらに好ましく、45%以下であることが特に好ましく、40%以下であることが最も好ましい。
また、たばこ刻みの幅は、エアロゾル源11に充填するうえで0.5mm以上2.0mm以下であることが好ましい。
エアロゾル源11中の抽出物質及び/又はそれらの構成成分の含有量は、特に限定されず、十分にエアロゾルを生成させるとともに、良好な香味の付与の観点から、エアロゾル源11の全量に対して通常5質量%以上であり、好ましくは10質量%以上である。また、エアロゾル源11中の抽出物質及び/又はそれらの構成成分の含有量は、通常50質量%以下であり、好ましくは15質量%以上、25質量%以下である。
エアロゾル源11における充填密度は、特に限定されないが、スティック1の性能を担保し、良好な香味の付与の観点から、通常250mg/cm3以上であり、好ましくは300mg/cm3以上である。また、エアロゾル源11における充填密度は、通常400mg/cm3以下であり、好ましくは350mg/cm3以下である。
エアロゾル源11が、1枚のたばこシートから構成される場合の態様としては、例えば、その一辺が、被充填物の中心線方向の大きさと同程度の大きさを有するたばこシートが、被充填物の中心線方向と水平に複数回折り返された状態で充填される態様(いわゆるギャザーシート)が挙げられる。また、その一辺が、被充填物の中心線方向の大きさと同程度の大きさを有するたばこシートを、被充填物の中心線方向と直交する方向に巻き回された状態で充填される態様も挙げられる。
「同心状に配置される」とは、すべてのたばこシートの中心が略同じ位置にあるように配置されていることをいう。また、たばこシートの枚数は、特に制限されないが、2枚、3枚、4枚、5枚、6枚、又は7枚である態様を挙げることができる。
2枚以上のたばこシートはすべて同じ組成あるいは物性であってもよいし、各たばこシートの中の一部又は全部が異なる組成あるいは物性であってもよい。また、各たばこシートの厚みは、それぞれが同一であってもよく、異なっていてもよい。
各たばこシートの厚みについては制限されないが、伝熱効率と強度の兼ね合いから、150μm以上1000μm以下が好ましく、200μm以上600μm以下がより好ましい。
この製造方法によれば、複数のたばこシートが、中心線方向に延在するとともに、中心線CLを中心として同心状に配置されるようになる。
この製造方法において、積層体は巻上げ成形後に隣接するたばこシート間に非接触部が形成されるように調製されることが好ましい。複数のたばこシート間に、たばこシートが接触しない非接触部(隙間)が存在すると、香味流路を確保して香味成分のデリバリー効率を高めることができる。他方で、複数のたばこシートの接触部分を介してヒーターからの熱を外側のたばこシートに伝達できるので高い伝熱効率を確保することができる。
複数のたばこシート間に、たばこシートが接触しない非接触部を設けるために、例えば、エンボス加工したたばこシートを用いる、隣接するたばこシート同士の全面を接着せずに積層する、隣接するたばこシート同士の一部を接着して積層する、あるいは隣接するたばこシート同士の全面あるいは一部を、巻上げ成形後に剥がれるように軽度に接着して積層することで積層体を調製する方法を挙げることができる。
巻紙12を含めた基材部10を調製する場合には、積層体の第1側の端面に巻紙12を配置してもよい。
抄造の場合は、以下の工程を含む方法で製造できる。1)乾燥たばこ葉を粗砕し、水で抽出して水抽出物と残渣に分離する。2)水抽出物を減圧乾燥して濃縮する。3)残渣にパルプを加え、リファイナで繊維化した後、抄紙する。4)抄紙したシートに水抽出物の濃縮液を添加して乾燥し、たばこシートとする。この場合、ニトロソアミン等の一部の成分を除去する工程を加えてもよい(特表2004-510422号公報参照)。
スラリー法の場合は、以下の工程を含む方法で製造できる。1)水、パルプ及びバインダーと、砕いたたばこ葉を混合する。2)混合物を薄く延ばして(キャストして)乾燥する。この場合、水、パルプ及びバインダーと、砕いたたばこ葉を混合したスラリーに対して紫外線照射もしくはX線照射することでニトロソアミン等の一部の成分を除去する工程を加えてもよい。
前記の各方法で用いる原料のたばこ葉の種類は、たばこ刻みを含むエアロゾル源11で説明したものと同じものを用いることができる。
たばこシートの組成は特に限定されないが、例えば、たばこ原料(たばこ葉)の含有量はたばこシート全質量に対して50質量%以上95質量%以下であることが好ましい。また、たばこシートはバインダーを含んでもよく、係るバインダーとしては、例えば、グアーガム、キサンタンガム、カルボキシメチルセルロース、カルボキシメチルセルロースのナトリウム塩等が挙げられる。バインダー量としては、たばこシート全質量に対して1質量%以上、10質量%以下であることが好ましい。たばこシートはさらに他の添加物を含んでもよい。添加物としては、例えばパルプなどのフィラーを挙げることができる。
パルプの種類としては、クラフト蒸解法、酸性・中性・アルカリ亜硫酸塩蒸解法、ソーダ塩蒸解法等による化学パルプ、グランドパルプ、ケミグランドパルプ、サーモメカニカルパルプ等を使用できる。
巻紙12の厚みは、特に限定されず、剛性、通気性、及び製紙時の調整の容易性の観点から、通常10μm以上であり、好ましくは20μm以上であり、より好ましくは30μm以上である。また、巻紙12の厚みは、通常100μm以下であり、好ましくは75μm以下であり、より好ましくは50μm以下である。
基材部10を作製するための巻紙12の形状は正方形又は長方形を挙げることができる。
エアロゾル源11を巻く巻紙12として利用する場合、一辺の長さとして12mm以上70mm以下程度を挙げることができ、もう一辺の長さとして15mm以上28mm以下、もう一辺の好ましい長さとして22mm以上24mm以下、さらに好ましい長さとして23mm程度を挙げることができる。エアロゾル源11を巻紙12で円柱状に巻く際は、例えば円周方向において、巻紙12の端部とその逆側の巻紙12の端部を2mm程度重ね合わせて糊付けすることで、円筒状の紙管の形状となり、その中にエアロゾル源11が充填されている形状となる。長方形形状の巻紙12のサイズは、基材部10のサイズによって決めることができる。
巻紙12では、好ましい坪量の範囲(25gsm以上45gsm以下)において、填料の含有量が15質量%以上45質量%以下であることが好ましい。
さらに、坪量が25gsm以上35gsm以下のとき、填料が15質量%以上45質量%以下であることが好ましく、坪量が35gsm以上45gsm以下のとき、填料が25質量%以上45質量%以下であることが好ましい。
填料としては、炭酸カルシウム、二酸化チタン、カオリン等を使用することができるが、香味や白色度を高める観点等から炭酸カルシウムを使用することが好ましい。
助剤として、紙力増強剤を添加してもよく、例えば、ポリアクリルアミド、カチオンでんぷん、酸化でんぷん、CMC、ポリアミドエピクロロヒドリン樹脂、ポリビニルアルコール等を挙げられる。特に、酸化でんぷんについては、極少量用いることにより、通気度が向上することが知られている(特開2017-218699号公報)。
冷却部20は、基材部10とフィルタ部30とに隣接して配置され、成形紙21が巻かれることで円筒等の横断面が中空(空洞)となるように成形された部材である。
冷却部20の中心線方向の大きさは、製品のサイズに合わせて適宜変更し得るが、通常5mm以上であり、10mm以上であることが好ましく、15mm以上であることがより好ましい。また、冷却部20の中心線方向の大きさは、通常35mm以下であり、30mm以下であることが好ましく、25mm以下であることがより好ましい。冷却部20の中心線方向の大きさを上述した下限以上とすることで、十分な冷却効果を確保して良好な香味を得ることができ、上述した上限以下とすることで、生成した蒸気及びエアロゾルが成形紙21に付着することによるロスを抑制することができる。
成形紙21の厚みは、特段制限されず、例えば、5μm以上500μm以下であってよく、また、10μm以上250μm以下であってよい。なお、成形紙21の材質は、特段制限されず、例えば、パルプが主成分のものであってよく、また、ポリエチレン、ポリプロピレン、ポリ塩化ビニル、ポリエチレンテレフタラート、ポリ乳酸、酢酸セルロース、及びアルミ箔のいずれかが主成分のもの、またはこれらの任意の組み合わせであってよい。
なお、基材部10が加熱されることでエアロゾルを凝結核として生じる蒸気が、外部からの空気と接触して温度が低下することで液化し、エアロゾルが生成されることを促進させることができる。冷却部20は、基材部が加熱されることで生成された蒸気を冷却してエアロゾルを生成する冷却部の一例である。
また、スティック1が、基材部10、冷却部20及びフィルタ部30がチップペーパー40で巻装されてなる態様である場合、チップペーパー40には、冷却部20に設けられた開孔Vの直上の位置に開孔が設けられていることが好ましい。このようなスティック1を作製する場合、開孔Vと重なるような開孔を設けたチップペーパー40を準備して巻装してもよいが、製造容易性の観点から、開孔Vを有さないスティック1を作製した後、冷却部20及びチップペーパー40を同時に貫通する孔を開けることが好ましい。
空気流入割合は、自動喫煙機(例えば、Borgwaldt社製1本がけ自動喫煙機)を用い、ISO9512に準拠した方法で測定することができる。
チップペーパー40の構成は、特段制限されず、一般的な態様とすることができ、例えば、パルプが主成分のものを挙げることができる。パルプとしては、針葉樹パルプや広葉樹パルプなどの木材パルプで抄造される以外にも、亜麻パルプ、大麻パルプ、サイザル麻パルプ、エスパルトなど一般的にたばこ物品用の巻紙に使用される非木材パルプを混抄して製造して得たものでもよい。これらのパルプは、単独の種類で用いてもよく、複数の種類を任意の割合で組み合わせて用いてもよい。
また、チップペーパー40は一枚で構成されていてもよいが、複数枚以上で構成されていてもよい。
パルプの態様としては、クラフト蒸解法、酸性・中性・アルカリ亜硫酸塩蒸解法、ソーダ塩蒸解法等による化学パルプ、グランドパルプ、ケミグランドパルプ、サーモメカニカルパルプ等を使用できる。
なお、チップペーパー40は、後述する製造方法により製造したものでも、市販品を用いてもよい。
チップペーパー40の形状は、特段制限されず、例えば、正方形又は長方形とすることができる。
チップペーパー40の通気度は、特段制限されないが、通常0コレスタユニット以上30000コレスタユニット以下であり、0コレスタユニット超10000コレスタユニット以下であることが好ましい。通気度は、ISO 2965:2009に準拠して測定される値であり、紙の両面の差圧が1kPaのときに、1分ごとに面積1cm2を通過する気体の流量(cm3)で表される。1コレスタユニット(1コレスタ単位、1C.U.)は、1kPa下においてcm3/(min・cm2)である。
チップペーパー40の外面の一部が、リップリリース材料によって被覆されていてもよい。リップリリース材料とは、ユーザがスティック1のフィルタ部30を口で咥えた際に、唇とチップペーパー40との間の接触が実質的に粘着することなく容易に離れることを補助するように構成される材料を意味する。リップリリース材料は、例えば、エチルセルロース、メチルセルロースなどを含んでいても良い。例えば、チップペーパー40の外面に対して、エチルセルロース系、或いは、メチルセルロース系のインクを塗工することでチップペーパー40の外面をリップリリース材料によってコーティングしても良い。
フィルタ部30は、チップペーパー40を介して、冷却部20の第2側に接続されている。チップペーパー40は、冷却部20の第2側の端部とフィルタ部30の第1側の端部を一体に巻き取ることで、これらを接続(連結)する。
フィルタ31は、フィルタの一般的な機能を有していれば特に制限されない。フィルタの一般的な機能とは、例えば、エアロゾル等を吸引する際に混ざる空気量の調整や、香味の軽減、ニコチンやタールの軽減等が挙げられるが、これらの機能を全て備えていることは要しない。また、紙巻きたばこ製品と比較して、生成される成分が少なく、また、エアロゾル源11の充填率が低くなる傾向のある非燃焼加熱型スティック1においては、濾過機能を抑えつつエアロゾル源11の脱落を防止する、ということも重要な機能の一つである。フィルタ31は、通常、フィルタ材を有し、フィルタ材は、例えば、酢酸セルロース繊維、アセテート繊維、チャコール繊維や不織布、パルプ紙等の充填物を濾過材料として円柱状に成形したものである。また、シート状のパルプ紙を充填したペーパーフィルターを用いる態様でもよい。
フィルタ材の密度は、特段制限されないが、通常0.10g/cm3以上0.25g/cm3以下であり、0.11g/cm3以上0.24g/cm3以下であることが好ましく、0.12g/cm3以上0.23g/cm3以下であることがより好ましい。
カプセルの形態は、特段制限されず、例えば、易破壊性のカプセルであってよく、その形状は球であることが好ましい。カプセルに含まれる添加剤としては、任意の添加剤を含んでいてよいが、特に、香味剤や活性炭素を含むことが好ましい。また、添加剤として、エアロゾルを濾過する一助となる1種類以上の材料を加えてもよい。添加剤の形態は、特段限定されないが、通常、液体又は固体である。なお、易破壊性のカプセルおよびその製造方法は、周知のものでよい。
香味剤としては、例えば、メントール、スペアミント、ペパーミント、フェヌグリーク、またはクローブ、中鎖脂肪酸トリグリセリド(MCT)等でよく、これらのうちの1種またはこれらの組合せを用いることができる。
フィルタ部30のフィルタ31の横断面は実質的に円形であり、その円の直径は、製品のサイズに合わせて適宜変更し得るが、通常4.0mm以上9.0mm以下であり、4.5mm以上8.5mm以下であることが好ましく、5.0mm以上8.0mm以下であることがより好ましい。なお、横断面が円形でない場合、上記の直径は、その断面の面積と同じ面積を有する円で仮定し、その円における直径が適用される。
フィルタ部30の中心線方向の大きさは、製品のサイズに合わせて適宜変更し得るが、通常5mm以上30mm以下であり、12.5mm以上27.5mm以下であることが好ましく、15.0mm以上25.0mm以下であることがより好ましい。フィルタ部30の形状や寸法が上記範囲となるように、フィルタ31やその他フィルタ部30に含まれる構造物等の形状や寸法を適宜調整できる。
通気抵抗は、ISO標準法(ISO6565)に従って、例えばセルリアン社製フィルタ通気抵抗測定器を使用して測定される。フィルタ部30の通気抵抗は、フィルタ部30の側面における空気の透過が行なわれない状態で第1側から第2側に所定の空気流量(17.5cc/min)の空気を流した際の、第1側と第2側との気圧差を指す。単位は、一般的にはmmH2Oで表す。
巻取紙32の材料は特段制限されず、公知のものを用いることができ、また、炭酸カルシウム等の充填剤等を含んでいてよい。
巻取紙32の厚さは、特段制限されず、通常20μm以上140μm以下であり、30μm以上130μm以下であることが好ましく、30μm以上120μm以下であることがより好ましい。
巻取紙32の坪量は、特段制限されず、通常20gsm以上100gsm以下であり、22gsm以上95gsm以下であることが好ましく、23gsm以上90gsm以下であることがより好ましい。
また、巻取紙32は、コーティングされていても、されていなくてもよいが、強度や構造剛性以外の機能を付与できる観点からは、所望の材料でコーティングされることが好ましい。
図3(a)に、第2の実施形態に係る非燃焼加熱型スティックのフィルタ部30の縦断面を示す模式図として、センターホール部35を含む図を示す。図3(a)の左側は冷却部20側(第1側)、右側はユーザが吸引のために口で咥える端側(第2側)である。
センターホール部35は、通常、図のようにフィルタ31よりも冷却部20側に配置され、好ましくは冷却部20に隣接するように配置される。
センターホール部35に使用する内側巻取紙34、外側巻取紙36は、巻取紙32の態様、材料、厚さ、坪量等について同様の物を使用することができる。また、内側巻取紙34は使用しなくてもよい。
図3(b)は、第3の実施形態に係る非燃焼加熱型スティックのフィルタ部30の縦断面を示す模式図として、フィルタ31間にキャビティ37を形成した図を示す。図3(b)も図3(a)と同様に、図の左側は冷却部20側(第1側)、右側はユーザが吸引するために口で咥える端側(第2側)である。
図3(b)では、フィルタ31は2つのセグメントを形成し、2つのフィルタ間に空洞状のキャビティ37が存在する。キャビティ37は、2つのフィルタセグメントを所望の位置に配置した状態で巻取紙32が巻かれることで形成される。通常は、更に、巻取紙32の外側のチップペーパー(図では省略)によって、基材部10の一部と冷却部20とフィルタ部30とが包まれている。
キャビティ37には、フィルタ31に含ませるものと同様の、ゼラチン等の破砕可能な外殻を含む破砕可能な添加剤放出容器(例えば、カプセル)を組み入れてもよい。1つのカプセルがキャビティ37に配置される場合、カプセルの大きさは5mm以下かつキャビティ37の内径より小さいとよい。また、2個以上のカプセルがキャビティ37に配置される場合、カプセルの大きさは3.5mm以下かつキャビティ37の内径より小さいとよい。
キャビティ37内には後述する活性炭等の多孔質吸着剤を配置してもよい。
以上記載した実施形態において、基材部10、冷却部20、フィルタ部30の少なくともいずれかに多孔質吸着剤を含有する。多孔質吸着剤は、通常、スティック1内のエアロゾルと接触する場所に配置される。好ましくは冷却部20、フィルタ部30の少なくとも一方に含有するが、少なくともフィルタ部30に含有させることが最も好ましい。
多孔質吸着剤としては、特に限定されず、無機物であっても有機物であってもよい。使用できる吸着剤の例として、無機物の多孔質吸着剤としては、活性炭、セピオライト、パリゴルスカイト、ゼオライト、活性炭素繊維、活性アルミナ、セピオライト混合紙、シリカゲル、活性白土、パーミキュライト、珪藻土を挙げることができる。また、有機物の多孔質吸着剤としては、パルプ、各種繊維、イオン交換樹脂等の高分子多孔質体を挙げることができる。これらの多孔質吸着体には、アルデヒド類等の香喫味阻害成分を一層除去可能な観点から、アルデヒド類と反応性を有するアニリン類化合物、ヒドラジン類化合物、アミノ系化合物を多孔質吸着剤の細孔内に吸着・保持等させ、多孔質吸着剤と共に使用してもよい。
これらの多孔質吸着剤の中でも、香喫味に悪影響を与えず、場合によっては香喫味を改善し、同時にアルデヒド類等の香喫味阻害成分に対する吸着が可能である観点から、活性炭が好ましい。以下、活性炭を例に説明する。
なお、「細孔径5000nm以下の全細孔容積に対する細孔径50nm以上5000nm以下の細孔容積の比率」は、次のように測定する。
窒素ガス吸着法(BET多点法)により、細孔径5000nm以下の全細孔容積、及び、細孔径2nm未満(ミクロ細孔)及び細孔径2nm以上50nm以下(メソ細孔)の細孔径分布を測定する。なお、全細孔容積は、細孔が液体窒素により充填されていると仮定してP/P0=0.998での吸着ガス量から計算する。また、水銀圧入法により、細孔径6.5nm以上5000nm以下の累計細孔容積を測定し、2つの方法の結果を合わせて、「細孔径5000nm以下の全細孔容積に対する細孔径50nm以上5000nm以下の細孔容積の比率」を求めた。
「細孔径50nm以上5000nm以下(マクロ細孔)の細孔容積」は水銀圧入法を用いた細孔径分布測定により求める。
細孔径2nm未満の細孔容積の比率は、窒素ガス吸着法により細孔径2nm未満(ミクロ細孔)の細孔容積と、前述の窒素ガス吸着法による細孔径5000nm以下の全細孔容積から求められる。
多くの活性炭のBET比表面積は800m2/g以上1300m2/g以下であり、これらの活性炭を使用してもよい。
原料物質に対して、物理的賦活化(活性化)又は化学的賦活化(活性化)などの適切な任意のプロセスによって、吸着性能が付与され、活性炭を製造されうる。
物理的賦活化では、原料物質に対して、a)炭化、b)賦活化/酸化、又は、c)炭化及び賦活化/酸化により、高温ガスを使用して活性炭となる。a)炭化プロセスは、酸素の不在下で一般に約600℃以上約900℃以下の範囲の高温で原料物質を熱分解する工程を含む。b)賦活化/酸化には、炭化した材料を蒸気、二酸化炭素又は酸素などの酸化性雰囲気にて、250℃を超える温度で暴露する工程が含まれる。賦活化/酸化の温度は、一般に約600℃以上約1200℃以下の範囲である。c)炭化及び賦活化/酸化は、a)炭化プロセスとb)賦活化/酸化の双方の処理を行う。
原料物質と物理的または化学的の適した賦活化プロセスを調整し、所望の細孔特性等を有する活性炭を製造することができる。また、実施予定のスティックに適した市販品を選択して使用することもできる。
本実施態様にて使用可能な活性炭の例を、各活性炭の主な物性と共に以下の表1に示す。
[多孔質吸着剤の配置個所]
前述したように、スティック1は、多孔質吸着剤を、基材部10、冷却部20、フィルタ部30の少なくともいずれかに含有する。冷却部20とフィルタ部30の双方又はいずれかが好ましいが、フィルタ部30のフィルタ31内に配置することが好ましい。使用される多孔質吸着剤は、前述したように、所望の細孔物性等を有する活性炭が好ましい。
活性炭等の多孔質吸着剤を存在させる箇所、態様は特段限定されないが、主な存在箇所・態様は次の通りである。なお、図1~図3において、活性炭の記載は省略した。
活性炭は、最も典型的にはフィルタ31内に含まれる。この場合、通常は、フィルタ材の中に含まれる。
フィルタ31が図1に表わされるように1つのセグメントで構成される場合は、活性炭はフィルタ内に均一に含有されていてもよく、また、濃度勾配を設けてもよく、フィルタ内の特定位置に濃度を高く存在させてもよい。濃度勾配を設ける場合や特定位置に濃度を高くする場合は、ユーザより遠い位置にて生成物中の香喫味阻害成分を除去することが好ましいため、活性炭はフィルタ31内の冷却部20側(第1側)に多く存在させることが好ましい。
また、フィルタ31が複数のセグメントで構成される場合は、活性炭はいずれのセグメントに存在させることも可能であるが、上記したようにユーザより遠い位置にてアルデヒド類等の香喫味阻害成分を除去する観点から、活性炭はフィルタ31内の冷却部20側(第1側)にあるセグメントに多く存在させることが好ましい。
活性炭は、フィルタ31を巻く巻取紙32に含有させてもよい。この場合、巻取紙32を製造する際に巻取紙32の厚みより粒径が小さい活性炭を加えて製造し、巻取紙32を構成する紙の層内に含ませることが好ましい。
また、巻取紙32のフィルタ31に対向する面に配置してもよい。この場合、活性炭を巻取紙32のフィルタに向くこととなる面に接着剤で付着させてもよく、巻取紙32の表面にコーティング剤を塗布する際にコーティング剤と共に活性炭製造時に所望の面に活性炭を存在させてもよい。
活性炭はフィルタ部30の中空部内に存在させてもよい。中空部は、図3(a)の模式図に示したセンターホール部35に設けられた中空部でもよく、その他の中空部でもよい。また、フィルタ部30を貫通する貫通孔の中空部内でもよい。
これらの場合、活性炭は中空部の全てに充填してもよく、中空部の一部に充填してもよい。図3(a)に示したように中空部が冷却部20に対して開口を有する場合は、冷却部20へ漏れないよう、中空部の開口を薄い紙、濾材等で塞ぐことが好ましい。
4)フィルタ部30の中空部に面する表面
活性炭はフィルタ部30の中空部の表面に存在させてもよい。中空部は、図3(a)に示したセンターホール部35に設けられた中空部でもよく、その他の中空部でもよい。この場合、活性炭はセンターホール部の充填層33の中空部側に接着剤等により付着させてもよく、また、充填層33の中空部の一部又は全てを覆うように活性炭を成形してもよい。
活性炭は、図3(b)の模式図に表されるように、複数のセグメントからなるフィルタ31の間に形成されたキャビティ37に配置してもよい。この場合、活性炭は、粒状物をキャビティ37内に充填してもよく、活性炭をキャビティの形状に成形してフィルタ―活性炭フィルタの順に配置してもよい。
図3(b)では、フィルタ31は2つのセグメントを有するが、フィルタ31が3以上のセグメントを有し、それぞれのフィルタ間に形成された複数のキャビティ37それぞれに活性炭を配置してもよい。
活性炭は冷却部20内に存在させてもよい。冷却部20に開孔Vが存在する場合、スティック外へ出ない観点から、粒径が開孔Vの幅より大きい活性炭、または、当該開孔Vの幅より大きく成形した活性炭を使用することが好ましい。活性炭から構成される多孔質成形体の層を、冷却部20とフィルタ部30との間にフィルタ31を覆うように配置してもよく、または当該成形体を冷却部20と基材部10に配置してもよい。
また、冷却部20を成形する成形紙21に存在させてもよい。例えば、成形紙21の厚さより粒径が小さい活性炭を、製造時に使用して成形紙21の紙層内に存在させてもよく、また、成形時のしわ、ひだ等の内側に接着剤により付着させてもよく、コーティング剤等の表面処理剤塗布の際に処理剤と共に存在させてもよい。
さらに、活性炭の一部は、基材部10のエアロゾル源11等と共に存在させ、基材部における加熱生成物と基材部内で活性炭を接触させてもよい。
これらの箇所・態様にて活性炭をスティック内に存在させることにより、加熱温度が高温となった非燃焼加熱型スティックにおいて、ユーザの喫味満足度を維持しながら、アルデヒド類等の香喫味阻害成分を除去することができる。
多孔質吸着剤の添加について、好ましい例である活性炭をフィルタ31に用いる場合について説明する。
フィルタ31のフィルタ材への添加量は、非燃焼加熱型スティック1本において、「活性炭の比表面積×活性炭の重量/フィルタ材の通気方向に対して垂直方向の断面積」の値として、15.0m2/cm2以上、80.0m2/cm2以下が好ましい。この値は、17.0m2/cm2以上がより好ましく、35.0m2/cm2以上がさらに好ましい。また、77.0m2/cm2以下がより好ましく、73.0m2/cm2以下がさらに好ましい。
上記「活性炭の比表面積×活性炭の重量/フィルタ材の通気方向に対して垂直方向の断面積」を、以下、便宜上「単位断面積当たりの活性炭の表面積」と表現することがある。
本実施態様において、単位断面積当たりの活性炭の表面積が上記範囲のような好ましい範囲内であることにより、加熱により生成する成分を所望量で使用者にデリバリーできるとともに、使用者に対して所望の香味感を与えることができる。単位断面積当たりの活性炭の表面積が小さ過ぎると、活性炭添加による効果を十分に得ることができない傾向にある。一方で、単位断面積当たりの活性炭の表面積が大き過ぎると、加熱により生成する成分が必要以上に低減する傾向にある。
この単位断面積当たりの活性炭の表面積は、非燃焼加熱型スティック1本が有するフィルタ材に添加する活性炭の比表面積と、添加した活性炭の重量、フィルタ材の断面積、に基づき算出できる。フィルタ部30が複数のフィルタ31から構成されている場合、活性炭が添加されているフィルタ材のみの断面積、長さを基準とする。なお、活性炭は添加されるフィルタ材中に均一に分散されていない場合もあり、フィルタ材の全ての断面(通気方向に対して垂直方向の断面)において、上記範囲を満たすことは困難であり、断面全体における平均値が上記範囲であればよい。
活性炭の添加量は、フィルタ部30全体に対する重量としては、例えば4.0mg以上、24.0mg以下を挙げることができ、4.5mg以上、23.0mg以下であることが好ましく、10.5mg以上、22.0mg以下であることがさらに好ましい。
Claims (9)
- エアロゾル源を含む基材部と、
前記基材部が加熱されることで生成された蒸気を冷却してエアロゾルを生成する冷却部と、
前記エアロゾルが通過する部位に配置されるフィルタ部と、
を備え、
前記基材部、前記冷却部、前記フィルタ部の少なくともいずれかが多孔質吸着剤を含む
非燃焼加熱型スティック。 - 前記多孔質吸着剤が活性炭である請求項1記載の非燃焼加熱型スティック。
- 前記活性炭は、細孔径5000nm以下の全細孔容積に対する細孔径50nm以上5000nm以下の細孔容積の比率が15%以上である
請求項2記載の非燃焼加熱型スティック。 - 前記活性炭は、細孔径50nm以上5000nm以下の細孔容積が0.2cm3/g以上0.9cm3/g以下である
請求項2又は3記載の非燃焼加熱型スティック。 - 前記活性炭は、細孔径5000nm以下の全細孔容積に対する細孔径2nm未満の細孔容積の比率が70%以下である
請求項2乃至4のいずれか1項に記載の非燃焼加熱型スティック。 - 前記活性炭のBET比表面積が、600m2/g以上1800m2/g以下である
請求項2乃至5のいずれか1項に記載の非燃焼加熱型スティック。 - 前記多孔質吸着剤が、前記スティック内のエアロゾルと接する場所に配置される
請求項1乃至6のいずれか1項に記載の非燃焼加熱型スティック。 - 前記多孔質吸着剤が、次の1)乃至5)のいずれかの箇所の1つ以上に存在する
1)前記フィルタ部のフィルタ内
2)前記フィルタを巻き取る巻取紙の紙層中又は当該フィルタに対向する面
3)前記フィルタ部の中空部内
4)前記中空部に面する表面
5)前記フィルタが複数のセグメントを有し、当該セグメント間に形成されるキャビティ内
請求項7記載の非燃焼加熱型スティック。 - エアロゾル源を含む基材部と、
前記基材部が加熱されることで生成されたエアロゾルが通過する部位に配置されるフィルタ部と、
を備え、
前記基材部、前記フィルタ部の少なくともいずれかが、細孔径5000nm以下の全細孔容積に対する細孔径50nm以上5000nm以下の細孔容積の比率が15%以上である活性炭を含む、
非燃焼加熱型スティック。
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|---|---|---|---|
| KR1020247020032A KR20240101691A (ko) | 2021-12-14 | 2021-12-14 | 비연소 가열형 스틱 |
| EP21968069.1A EP4449903A4 (en) | 2021-12-14 | 2021-12-14 | HEATED STICK WITHOUT COMBUSTION |
| JP2023567340A JP7789085B2 (ja) | 2021-12-14 | 2021-12-14 | 非燃焼加熱型スティック |
| PCT/JP2021/046070 WO2023112152A1 (ja) | 2021-12-14 | 2021-12-14 | 非燃焼加熱型スティック |
| CN202180104936.7A CN118401127A (zh) | 2021-12-14 | 2021-12-14 | 非燃烧加热型烟杆 |
| US18/743,146 US20240324663A1 (en) | 2021-12-14 | 2024-06-14 | Non-combustion-heating-type stick |
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| Application Number | Priority Date | Filing Date | Title |
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| PCT/JP2021/046070 WO2023112152A1 (ja) | 2021-12-14 | 2021-12-14 | 非燃焼加熱型スティック |
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| US18/743,146 Continuation US20240324663A1 (en) | 2021-12-14 | 2024-06-14 | Non-combustion-heating-type stick |
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| US (1) | US20240324663A1 (ja) |
| EP (1) | EP4449903A4 (ja) |
| JP (1) | JP7789085B2 (ja) |
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| EP4449903A1 (en) | 2024-10-23 |
| JP7789085B2 (ja) | 2025-12-19 |
| KR20240101691A (ko) | 2024-07-02 |
| US20240324663A1 (en) | 2024-10-03 |
| EP4449903A4 (en) | 2025-10-15 |
| JPWO2023112152A1 (ja) | 2023-06-22 |
| CN118401127A (zh) | 2024-07-26 |
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