WO2022215177A1 - Porous material for non-combustion-heating tobacco, non-combustion-heating tobacco, and electric heating tobacco product - Google Patents

Abstract

Provided is a porous material that is for a non-combustion-heating tobacco and that comprises coolants and a binder resin. The coolants contain a polyhydric alcohol and a porous granular base material. The granular base material is impregnated with the polyhydric alcohol. The coolants are bound together via the binder resin.

Description

Non-combustion-heated tobacco porous materials, non-combustion-heated tobacco products, and electrically-heated tobacco products

The present invention relates to a non-combustion-heated tobacco porous material, a non-combustion-heating tobacco, and an electrically-heated tobacco product.

In recent years, as a substitute for cigarettes (cigarettes), non-combustion heating tobacco that is used by inserting it into an electric heating device has been developed (Patent Document 1). The non-combustion heated tobacco is generally composed of a tobacco rod portion in which a composition containing flavor components such as shredded tobacco, an aerosol base material, etc. is wrapped with wrapping paper, and components generated from the tobacco rod portion by heating are sucked. It is equipped with a mouthpiece part for playing and a tip paper for wrapping them. When using non-combustion heating tobacco, the non-combustion heating tobacco is inserted or placed in the electric heating device. A heat source provided in the electrically heated device heats at least a portion of the tobacco rod without burning it, thereby generating volatile substances from the composition contained in the tobacco rod. These volatile substances are carried from the tobacco rod side to the mouthpiece side by the user's inhalation, and are cooled in the cooling segment included in the mouthpiece to form an aerosol.

For example, Patent Document 1 discloses an aerosol cooling element comprising a plurality of longitudinally extending channels and having a porosity of between 50% and 90% in the longitudinal direction.

Japanese Patent Publication No. 2015-508676

The temperature of smoke generated in a cigarette can reach 800° C. or higher. At such a high temperature, the amount of moisture contained in the smoke becomes very small, so the user tends to have difficulty in perceiving the high temperature.
On the other hand, the aerosol generated by non-combustion heating tobacco contains a relatively large amount of water. Therefore, although the temperature of the aerosol is lower than that of the cigarette, the temperature of the aerosol is easier for the user to perceive than that of the cigarette.

Methods for lowering the temperature of the aerosol include lowering the heating temperature during use, lengthening the flow path of the aerosol, and contacting the aerosol with a sheet-like or granular material that can be expected to have a cooling function. When using a sheet-like or granular material that can be expected to have a cooling function, there may be a gap between the sheet-like or granular material and the inner wall of the container due to impact such as vibration during transportation or use. can occur.
If such a gap is formed, the generated aerosol will pass exclusively through the gap, so depending on the orientation of the tobacco product with respect to gravity when inhaled, there is a risk that the cooling function will not be fully exhibited or that the amount of flavor will differ. .

Accordingly, the present invention provides a non-combustion-heating tobacco porous material in which granular cooling agents are stably arranged, and a non-combustion-heating tobacco product and a heat-not-burning tobacco product containing the porous material. Make it an issue.

As a result of intensive studies, the present inventors found that the above problems can be solved by using a porous material in which a granular cooling agent is bound with a binder resin, and have arrived at the present invention. That is, the gist of the present invention is as follows.

[1] A porous material for non-combustion-heating cigarettes containing a coolant and a binder resin,
the cooling agent comprises a polyhydric alcohol and a porous granular substrate;
The granular base material is impregnated with the polyhydric alcohol,
A porous material for non-combustion-heating cigarettes, wherein the coolants are bonded to each other through the binder resin.
[2] The non-combustion heating cigarette porous material according to [1], wherein the content of the polyhydric alcohol in the coolant is 3% by weight or more and 39% by weight or less.
[3] The porous granular substrate is one or more selected from the group consisting of charcoal, calcium carbonate, cellulose, acetate, sugar, starch, and chitin. Porous material for combustion-heated cigarettes.
[4] The non-combustion heating tobacco according to any one of [1] to [3], wherein the porous granular substrate has a pore volume of 0.3 ml/g or more and 0.8 ml/g or less. Porous material for
[5] The porous material for non-combustion heating cigarettes according to any one of [1] to [4], wherein the coolant has an average particle size of 200 μm or more and 550 μm or less.
[6] The porous material for non-combustion heating cigarettes according to any one of [1] to [5], wherein the coolant has a bulk density of 0.55 g/cm ³ or more and 0.80 g/cm ³ or less. .
[7] The porous material for non-combustion heating cigarettes according to any one of [1] to [6], wherein the binder resin is a polyolefin that is a polymer of a monomer containing an olefin having 2 to 6 carbon atoms. .
[8] The porous material for non-combustion heating cigarettes according to [7], wherein the polyolefin is ultra-high molecular weight polyethylene (UHMWPE).
[9] The porous material for non-combustion heating cigarettes according to any one of [1] to [8], wherein the weight ratio of the binder resin to the coolant is 0.20 or more and 0.45 or less.
[10] A non-combustion heating tobacco having a mouthpiece portion containing the porous material for non-combustion heating tobacco according to any one of [1] to [9].
[11] an electric heating device comprising a heater member, a battery unit serving as a power source for the heater member, and a control unit for controlling the heater member; An electrically heated tobacco product comprising the non-combustion heated tobacco of [10].
[12] A method for producing the non-combustion heating type porous material for cigarettes according to any one of [1] to [9], comprising a step of heating the coolant and the binder resin in a mold. A method for producing a porous material for non-combustion heating tobacco, comprising:

According to the present invention, it is possible to provide a non-combustion-heating tobacco porous material in which granular cooling agents are stably arranged, and a non-combustion-heating tobacco and a heat-not-burn tobacco product containing the porous material. can.

1 is a schematic diagram of a non-combustion heated cigarette according to an embodiment of the present invention; FIG. 1 is a schematic diagram of an electrically heated tobacco product according to an embodiment of the present invention; FIG. 1 is a schematic diagram of an electrically heated tobacco product according to an embodiment of the present invention; FIG. FIG. 10 is a view for explaining the mouthpiece-side end of the region where the cooling segment and the electrically heated device are in contact; FIG. 10 is a view for explaining the mouthpiece-side end of the region where the cooling segment and the electrically heated device are in contact;

Embodiments of the present invention will be described in detail below, but these descriptions are examples (representative examples) of embodiments of the present invention, and the present invention is not limited to these contents as long as they do not exceed the gist of the present invention.
Further, in this specification, when a numerical value or a physical property value is sandwiched before and after the "~", it is used to include the values before and after it.
Also, in this specification, "plurality" means two or more unless otherwise specified.

<Porous material>
A porous material according to one embodiment of the present invention is a non-combustion heating type porous material for tobacco containing a coolant and a binder resin, wherein the coolant is a polyhydric alcohol and a porous granular base. material, wherein the granular base material is impregnated with the polyhydric alcohol, and the coolants are bonded to each other via the binder resin (simply referred to as “porous Also referred to as "substance".).
It is preferable that the coolant is dispersed and arranged substantially uniformly inside the porous material, and that they are fixed to each other by a binder resin.

In the porous material according to the embodiment of the present invention, the weight ratio of the binder resin to the coolant is preferably 0.20 or more, more preferably 0.25 or more, and still more preferably 0.30 or more. , preferably 0.45 or less, more preferably 0.40 or less, and still more preferably 0.35 or less. By containing the coolant and the binder resin in such a range, a porous material having an appropriate porosity can be obtained, and airflow resistance and the permeation amount of semi-volatile components in tobacco smoke can be suitably reduced. can be adjusted.

The shape of the porous material is not particularly limited, but may be, for example, a cylindrical shape.
When the porous material has a columnar shape, the diameter of the column can be appropriately changed according to the size of the non-combustion heating tobacco, but is usually 4.0 mm or more, preferably 4.5 mm or more, more preferably 5.5 mm or more. It is 0 mm or more, and usually 9.0 mm or less, preferably 8.5 mm or less, more preferably 8.0 mm or less. In addition, the length (height) of the cylinder in the axial direction can be appropriately changed according to the size of the filter and the like. Also, it is usually 70 mm or less, preferably 50 mm or less, more preferably 30 mm or less, and still more preferably 25 mm or less.

The airflow resistance per mm of the axial length of the porous material is not particularly limited, but is usually 0.0 mmH ₂ O or more, preferably 0.2 mmH ₂ O or more, more preferably 0.4 mmH ₂ O or more, and It is usually 1.2 mmH ₂ O or less, preferably 1.0 mmH ₂ O or less, more preferably 0.6 mmH ₂ O or less. The above airflow resistance is measured according to the ISO standard method (ISO6565) using, for example, a filter airflow resistance measuring instrument manufactured by Cerulean.

Since the porous material according to the embodiment of the present invention has the coolant fixed by the binder resin, the non-combustion heating cigarette having the mouthpiece portion containing the porous material, or the non-combustion heating tobacco. During transportation and use of the provided electrically heated tobacco product, the coolant will not be forced on one side to create a gap on the other. Therefore, the flow of the aerosol passing through the porous material is not biased, the coolant can stably perform its cooling function, and the flavor can be kept constant. In addition, the conventional method of lowering the heating temperature at the time of use has a problem that the generation of aerosol is likely to become unstable, and the conventional method of introducing vent air has a problem of diluting the smoking taste. was occurring. On the other hand, the above-described method using a porous material does not cause such problems, and from this point of view as well, the above-described method using a porous material is excellent in cooling efficiency and stability. In addition, the conventional method of lengthening the aerosol flow path increases the manufacturing cost of the tobacco product itself, and there is a high risk of restricting the freedom of designing the tobacco product. Therefore, from this point of view as well, the method using the coolant can reduce the manufacturing cost.
Furthermore, when a form in which a hollow cavity is provided or a form using a PLA sheet is adopted as a part of the mouthpiece member in the tobacco product, the hardness tends to be insufficient, but the above porous Since the material has a definite shape, this hardness problem can be improved, and in turn, the feeling of holding when handled during smoking can be improved.

The coolant, binder resin, etc. contained in the porous material will be described in detail below.

<Coolant>
A coolant contained in the porous material according to one embodiment of the present invention comprises a polyhydric alcohol and a porous granular substrate. The polyhydric alcohol is not particularly limited as long as it is a dihydric or higher alcohol, and may be any alcohol that can be safely used as a food additive. In addition, it is preferable that it does not affect the flavor of the non-combustion heating tobacco. Specific examples include propylene glycol and glycerin.
Although the boiling point of the polyhydric alcohol is not particularly limited, it is preferably liquid at 20°C and atmospheric pressure. It is more preferable to have Also, the temperature is usually 340° C. or lower, preferably 290° C. or lower, and more preferably 240° C. or lower.
The content of the polyhydric alcohol in the coolant is not particularly limited, but is usually 3% by weight or more, preferably 8% by weight or more, more preferably 18% by weight or more, and usually 39% by weight. % by weight or less, preferably 34% by weight or less, more preferably 31% by weight or less, and even more preferably 29% by weight or less.

By bringing the aerosol into contact with the cooling agent, the temperature of the aerosol inhaled by the user can be lowered by, for example, 4°C or more. In some embodiments, the temperature can be lowered by 9°C or more.
Furthermore, it is conceivable that the absorption of some of the components contained in the aerosol may improve the flavor and taste.

Porous granular substrates contained in the porous material according to one embodiment of the present invention include charcoal, calcium carbonate, cellulose, acetate, sugar, starch, chitin and the like. Charcoal is particularly preferred, and activated carbon is more preferred.
Examples of activated carbon include those made from wood, bamboo, coconut shells, walnut shells, coal, and the like.
The BET specific surface area of the porous granular substrate is not particularly limited, but is usually 1100 m ² /g or more and 1600 m ² /g or less, preferably 1200 m ² /g or more and 1500 m ² /g or less, More preferably, it is 1250 m ² /g or more and 1380 m ² /g or less. The BET specific surface area can be determined by a nitrogen gas adsorption method (BET multipoint method).
The pore volume of the porous granular substrate is not particularly limited, but is usually 0.3 mL/g or more and 0.8 mL/g or less, more preferably 0.5 mL/g or more and 0.75 mL/g. g or less, more preferably 0.6 mL/g or more and 0.7 mL/g or less. By setting the pore volume of the porous granular base material within the above range, the desired cooling effect can be easily obtained. The pore volume can be calculated from the maximum adsorption amount obtained using the nitrogen gas adsorption method.
Although the average particle size of the porous granular base material is not particularly limited, it is usually 200 μm or more and 600 μm or less, preferably 212 μm or more and 600 μm or less, from the viewpoint of easily obtaining the desired cooling effect. , 250 μm or more and 600 μm or less, more preferably 250 μm or more and 500 μm or less, and particularly preferably 300 μm or more and 450 μm or less. A porous granular substrate that satisfies the above range can be obtained, for example, by passing through a mesh having a specific mesh size defined in JIS Z8801-1 (2006). As used herein, the average particle size is measured by a dry sieving method (JIS Z 8815-1994). Further, the average particle size in the specification of the present application means the particle size (D50) at which the volume integrated value is 50% in the particle size distribution, unless otherwise specified.

Although the bulk density of the porous granular base material is not particularly limited, it is usually 0.30 g/cm ³ or more and 0.35 g/cm ³ or less from the viewpoint of easily obtaining the desired cooling effect. It is preferably 40 g/cm ³ or more and 0.70 g/cm ³ or less, more preferably 0.65 g/cm ³ or more and 0.60 g/cm ³ or less. Bulk density can be evaluated using a powder property evaluation device (eg Hosokawa Micron Powder Tester PT-X).

The coolant contained in the porous material according to one embodiment of the present invention may contain polyhydric alcohol, porous granular substrate, water, and the like. The water content of the coolant is not particularly limited, but is usually 18% by weight or less, preferably 15% by weight or less, more preferably 12% by weight or less, and setting a lower limit is not particularly necessary. and may be 0% by weight or more or 0.5% by weight or more.
The average particle size of the coolant is not particularly limited, but from the viewpoint of easily obtaining the desired cooling effect, it is usually 200 μm or more and 600 μm or less, preferably 212 μm or more and 600 μm or less, and 250 μm or more and 600 μm. It is more preferably 250 μm or more and 500 μm or less, and particularly preferably 300 μm or more and 450 μm or less. The average particle size of the coolant can be measured by the same method as for the average particle size of the porous granular substrate.
Although the bulk density of the coolant is not particularly limited, it is usually 0.55 g/cm ³ or more and 0.80 g/cm ³ or less, preferably 0.62 g/cm 3 from the viewpoint of easily obtaining the desired cooling effect. ³ or more and 0.78 g/cm ³ or less, more preferably 0.70 g/cm ³ or more and 0.76 g/cm ³ or less. The bulk density of the coolant can be measured in the same manner as for the porous granular substrate coolant described above.

In this embodiment, the granular base material is impregnated with the polyhydric alcohol. As used herein, the term "impregnated" means that at least part of the polyhydric alcohol is retained in the pores of the porous granular substrate. The pores of the porous granular substrate retaining the polyhydric alcohol may be exposed on the surface of the substrate or may be present inside the substrate.

The method for producing the cooling agent is not particularly limited, but a step A for obtaining granules by spraying or dropping a solution containing the above polyhydric alcohol onto a porous granular base material, a step B for drying the granules, A manufacturing method comprising: The above step A and the above step B can be performed continuously, but it is possible to prevent the amount of water contained in the granules from becoming excessive by performing the step A and step B alternately in multiple steps. preferable. The number of times step A and step B are performed is not particularly limited, and may be performed once, or may be repeated until the amount of polyhydric alcohol contained in the granules reaches a desired value. In addition, the manufacturing method of the cooling agent may have a manufacturing process other than the A process and the B process.
Moreover, the step A is preferably a step of obtaining granules by spraying or dropping the solution onto the flowing porous granular substrate while allowing the porous granular substrate to flow. The cooling agent obtained by the step of immersing the porous granular base material in the solution and then removing the liquid may contain lumps having a large particle size. It is easy to obtain a coolant having an average particle size within the above range without forming lumps with a large diameter.

The content of the polyhydric alcohol in the solution used in step A is preferably 25% by weight or more, more preferably 40% by weight or more. Moreover, it is usually 75% by weight or less, preferably 60% by weight or less. In addition, the above solution may contain other solvents, such as water.

The viscosity of the solution is not particularly limited, but is usually 1.0 mPa s or more and 9.0 mPa s or less, preferably 1.5 mPa s or more and 6.0 mPa s or less, more preferably , 2.5 mPa·s or more and 4.0 mPa·s or less. The viscosity of the solution can be adjusted to the above range by diluting the above polyhydric alcohol with the above solvent, depending on the temperature and pressure in the A step.
The temperature in the above step A can be room temperature of about 20° C., but is not limited to this, and can be carried out within a range in which the polyhydric alcohol and solvent do not solidify or evaporate. In addition, although the pressure can be atmospheric pressure, it is not limited to this, and can be carried out within a range in which the polyhydric alcohol and solvent do not solidify or evaporate.

The drying method in the step B is not particularly limited, and examples thereof include drying under reduced pressure and drying with hot air. When hot air drying is performed, hot air may be blown until the water content of the granules obtained in the above step A falls within the range given as the water content of the cooling agent.
The drying temperature is not particularly limited, but is usually 30° C. or higher, preferably 35° C. or higher, and more preferably 40° C. or higher. Also, the temperature is usually 90° C. or lower, preferably 80° C. or lower, and more preferably 70° C. or lower. When drying, from the viewpoint of production stability, it is preferable to remove the solvent (water) while leaving the polyhydric alcohol, and the drying conditions are appropriately set according to the type of polyhydric alcohol.

The drying process is preferably carried out while the granules are fluidized from the viewpoint of uniform drying treatment between the granules and over the entire surface of the granules. In particular, when the A step and the B step are alternately performed, it is preferable to keep the granules fluidized while repeating those steps.

<Binder resin>
The binder resin is a component that binds the cooling agent and other components described later to form a porous material. For example, a thermoplastic resin can be used.

Examples of thermoplastic resins include polyolefins such as polyethylene, polypropylene, polybutylene, and polymethylpentene; polyesters such as polyethylene terephthalate, polybutylene terephthalate, polycyclohexylene dimethylene terephthalate, and polytrimethylene terephthalate; polyamides; Acrylic polymer; polystyrene such as acrylonitrile-butadiene-styrene copolymer, styrene-acrylonitrile copolymer, styrene-butadiene copolymer, styrene-maleic anhydride copolymer; ethylene vinyl acetate, ethylene vinyl alcohol, polyvinyl chloride, etc. polytetrafluoroethylene (PTFE); polyether ether ketone (PEEK); cellulose derivatives such as cellulose acetate, cellulose butyrate, plasticized cellulose derivatives, cellulose propionate, ethyl cellulose; be done.

The thermoplastic resin preferably exhibits substantially no flow at its melting temperature. "Substantially no flow at the melting temperature" refers to the thermoplastic exhibiting little or no polymer flow when heated to the melting temperature. Further, the thermoplastic resin preferably has a melt flow rate (MFR) at 190° C. and a load of 15 kg of 0 g/10 min or more and 3.5 g/10 min or less, and 0 g/10 min or more and 2.0 g/10 min. The following are more preferable. Note that MFR is measured according to ASTM D1238.

Examples of such thermoplastic resins include polyolefins, which are polymers of monomers containing olefins having 2 to 6 carbon atoms. More specifically, ultra-high molecular weight polyethylene (hereinafter sometimes referred to as "UHMWPE"), very high molecular weight polyethylene (hereinafter sometimes referred to as "VHMWPE"), high molecular weight polyethylene (hereinafter sometimes referred to as "VHMWPE") (sometimes referred to as "HMWPE"), and UHMWPE is preferred. UHMWPE, VHMWPE and HMWPE have MFRs of about 0 to 1.0 g/10 min, 1.0 to 2.0 g/10 min and 2.0 to 3.5 g/10 min at 190°C and 15 kg load, respectively. be. These polyolefins may be used alone, or two or more of them may be used in any combination and ratio.

In this specification, “UHMWPE” refers to a polyethylene composition having a weight average molecular weight ( _Mw ) of 3.0×10 ⁶ g/mol or more and 30×10 ⁶ g/mol or less, and “VHMWPE”. refers to a polyethylene composition having a weight average molecular weight (Mw) greater than 1.0 x ¹⁰⁶ g/mol and less than 3.0 x ¹⁰⁶ g/mol; " _HMWPE " means weight average molecular weight ( _Mw ) is 3.0×10 ⁵ g/mol or more and less than 1.0×10 ⁶ g/mol. The weight average molecular weight (M _w ) is measured according to the Margolies equation (“Margolies molecular weight”).

A commercially available product can be used for the polyethylene material. Commercially available GUR (registered trademark) polymers sold by Celanese include GUR (registered trademark) 2000 series (2105, 2122, 2122-5, 2126), GUR (registered trademark) 4000 series (4120, 4130). , 4150, 4170, 4012, 4122-5, 4022-6, 4050-3/4150-3), GUR® 8000 Series (8110, 8020), GUR® X Series (X143, X184, X168 , X172, X192) and the like.

Although the shape of the binder resin is not particularly limited, it is preferably non-fibrous, and preferably particulate. Due to the particulate nature of the binder resin, the coolant bonds with the particles of the binder resin at multiple contact points to form the porous material. As a result, sufficient voids are formed inside the porous material, a contact area between the coolant and the surrounding air flow is ensured, and a sufficient cooling effect can be exhibited.
As used herein, particulate includes spherical, hyperion-like, starfish-like, crondular, ie, interplanetary dust-like, granular, potato-like, and irregular shapes. In addition, the spherical shape includes not only a true sphere but also a shape close to a sphere such as an elliptical sphere.

When the binder resin is particulate, the particles of the binder resin have a length in at least one direction determined by scanning electron microscope (SEM) observation of 0.1 nm or more, 0.5 nm or more, or 1.0 nm or more. , 10 nm or more, 100 nm or more, 500 nm or more, 1.0 μm or more, 5.0 μm or more, 10 μm or more, 50 μm or more, 100 μm or more, 150 μm or more, 200 μm or more, or 250 μm or more; It may be 1000 μm or less, 900 μm or less, 700 μm or less, 500 μm or less, 400 μm or less, 300 μm or less, 250 μm or less, 200 μm or less, 150 μm or less, 100 μm or less, 50 μm or less, 10 μm or less, or 500 nm or less.

When the binder resin is particulate, the bulk density of the particles of the binder resin may be 0.10 g/cm ³ to 0.55 g/cm ³ , and may be 0.17 g/cm ³ to 0.50 g. /cm ³ or 0.20 g/cm ³ to 0.47 g/cm ³ .

The porous material according to this embodiment may further contain other components such as a flavoring agent within a range that does not impair the effects of the present invention. Flavoring agents include finely chopped orange peel, finely chopped rosepips, finely chopped chamomile flower, finely chopped lemon verbena, vanilla bean, finely chopped peppermint leaf, finely chopped spearmint, finely chopped black tea leaf, finely chopped Chopped rose flower etc. are mentioned. Other components can be combined with the coolant through a binder resin to form a porous material.
Porous materials according to embodiments of the present invention do not require the use of plasticizers such as triacetin. As a result, it is possible to prevent the semi-volatile components in tobacco smoke from being removed by being adsorbed by the plasticizer.

The method for producing the porous material according to the present embodiment is not particularly limited as long as the coolant can be bound by the binder resin. methods that include a molding step with internal heating.

In order to more reliably bind the coolant and other components through the binder resin so that the coolant and other components do not drop out of the resulting porous material in the molding process, the coolant and the , the binder resin and, if necessary, other components are preferably sufficiently mixed so as to be uniformly dispersed. A method for mixing each material is not particularly limited, and a known method can be adopted. Known methods include, for example, a method of mixing with a mixer such as a ribbon blender, paddle blender, plow blender, double cone blender, twin shell blender, planetary blender, rotary drum, mixing screw, rotary mixer and the like. The mixing order of each material is also not particularly limited.

The heating temperature in the molding step is not particularly limited, and is usually 50°C or higher and 300°C or lower. The heating time may be appropriately selected according to the type of binder resin, heating temperature, etc., and is usually 1 minute or more and 120 minutes or less.
The shape, size and bulk density of the binder resin to be subjected to the molding step may be the same as those of the binder resin contained in the porous material, and preferred embodiments are also the same.

Particularly preferably, the porous material contains a particulate binder resin, a coolant, and optionally other components, and the mass ratio of the binder resin to the coolant is within the range described in the section on the porous material. The resulting mixture is supplied to a mold corresponding to the shape of the desired porous material, and the temperature is at least 10°C lower than the Vicat softening point of the binder resin and 10°C above the Vicat softening point. It is produced by heating in the range below a high temperature. This makes it possible to produce a porous material in which the coolant and other ingredients are bonded to the particles of the binder resin at multiple points of contact. The Vicat softening point can be measured according to ASTM D1525.

The above-mentioned manufacturing method is, for example, JP 2013-215196, JP 2013-539659, JP 2014-509833, JP 2015-532110, JP 2015-521488, JP 2016 -510993, JP-A-2016-510995, etc., and the various production conditions described in these documents can be employed.

<Non-combustion heated tobacco>
Another embodiment of the present invention is a non-combustion-heated tobacco having a mouthpiece portion including the above-described non-combustion-heated tobacco porous material.
FIG. 1 shows an example of a non-combustion heated cigarette according to an embodiment. The non-combustion heating cigarette will be described below with reference to FIG.

The non-combustion heating tobacco 10 shown in FIG. 1 is a rod-shaped non-combustion heating tobacco including a tobacco rod portion 11, a mouthpiece portion 14, and a tipping paper 15 formed by winding these together. Section 14 includes a cooling segment 12 and a filter segment 13 including filter media, wherein at least one of cooling segment 12 and filter segment 13 includes a porous material according to an embodiment of the present invention. In addition, the cooling segment 12 is sandwiched adjacent to the tobacco rod portion 11 and the filter segment 13 with respect to the axial direction (also referred to as the "longitudinal direction") of the non-combustion heating tobacco 10, and , an opening V may be provided concentrically in the circumferential direction of the cooling segment 12 .

The opening V provided in the cooling segment 12 of the non-combustion heating cigarette 10 shown in FIG. The temperature of the components and air flowing in from the rod portion 11 can be lowered.
The openings V that may be provided in this embodiment can be present in a region of 4 mm or more in the direction of the cooling segment from the boundary between the cooling segment 12 and the filter segment 13 . With this configuration, it is possible to improve the cooling ability to lower the temperature of the components and air generated by heating, further suppress the retention of the components and air in the cooling segment, and eventually deliver the components. quantity can be improved.
The components generated by heating include, for example, flavor components derived from fragrances, nicotine and tar derived from tobacco leaves, and aerosol components derived from aerosol bases.

The rod-shaped non-combustion heating tobacco 10 preferably has a columnar shape that satisfies a shape with an aspect ratio of 1 or more defined below.
Aspect ratio = h/w
w is the width of the bottom surface of the columnar body (in this specification, it is the width of the bottom surface on the tobacco rod side), h is the height, and it is preferable that h≧w. As used herein, the longitudinal direction is defined to be the direction indicated by h. Therefore, even if w≧h, the direction indicated by h is called the long axis direction for convenience. The shape of the bottom surface is not limited, and may be a polygon, a polygon with rounded corners, a circle, or an ellipse. In the case of a polygon, it is the diameter of the circumscribed circle or the major axis of the circumscribed ellipse.
The length h of the non-combustion heating cigarette 10 in the long axis direction is not particularly limited, and is, for example, usually 40 mm or more, preferably 45 mm or more, and more preferably 50 mm or more. Moreover, it is usually 100 mm or less, preferably 90 mm or less, and more preferably 80 mm or less.
The width w of the bottom surface of the columnar body of the non-combustion heating tobacco 10 is not particularly limited, and is, for example, usually 5 mm or more, preferably 5.5 mm or more. Moreover, it is usually 10 mm or less, preferably 9 mm or less, and more preferably 8 mm or less.

The ventilation resistance in the longitudinal direction per one non-combustion heating cigarette 10 is not particularly limited, but from the viewpoint of ease of smoking, it is usually 8 mmH ₂ O or more, preferably 10 mmH ₂ O or more, and preferably 12 mmH 2 O or more. ₂ O or more, and usually 100 mmH ₂ O or less, preferably 80 mmH ₂ O or less, and more preferably 60 mmH ₂ O or less.
The airflow resistance is measured according to the ISO standard method (ISO6565:2015) using, for example, a filter airflow resistance meter manufactured by Cerulean. The ventilation resistance is a predetermined air flow rate (17.5 cc/min. ) is the air pressure difference between the first end surface and the second end surface when the air is flowed. Units are generally expressed in _mmH2O . It is known that the relationship between the ventilation resistance and the length of the non-combustion heating cigarette is proportional in the length range (5 mm to 200 mm in length) that is normally practiced, and if the length is doubled, it is non-linear. The ventilation resistance of combustion-heated cigarettes is doubled.

[Mouthpiece part]
The configuration of the mouthpiece portion 14 includes a cooling segment 12 and a filter segment 13 including a filter media. There is no particular limitation as long as it is configured to be sandwiched adjacent to and. A porous material according to an embodiment of the present invention is included in at least one of the filter segment or the cooling segment, and may be included in both. The manner in which the filter segment and/or the cooling segment comprise porous material is detailed in the description of each segment below.

The ratio of the length of the cooling segment 12 and the filter segment 13 to the length of the mouthpiece portion 14 in the longitudinal direction (cooling segment: filter segment) is not particularly limited, but the delivery amount of fragrance and appropriate aerosol concentration from the viewpoint of, usually 0.60-1.40: 0.60-1.40, preferably 0.80-1.20: 0.80-1.20, 0.85-1. 15: more preferably 0.85 to 1.15, 0.90 to 1.10: more preferably 0.90 to 1.10, 0.95 to 1.05: 0.95 to 1.05 is particularly preferred. In particular, when the cooling segment 12 is lengthened, the aerosol particles are accelerated and good flavor can be achieved.
By setting the length ratio of the cooling segment 12 and the filter segment 13 within the above range, the cooling effect, the effect of suppressing the loss due to the generated vapor and aerosol adhering to the inner wall of the cooling segment 12, and the air of the filter A good flavor can be obtained with a well-balanced amount and flavor adjustment function.
The filter segment and cooling segment are described in detail below.

(filter segment)
The filter segment 13 is not particularly limited as long as it has a function as a general filter. can use things. 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 enough. don't need it. In addition, compared to cigarette products, electrically heated tobacco products, which tend to produce less components and have a lower filling rate of tobacco fillers, suppress the filtering function while preventing the tobacco fillers from falling. Prevention is also one of the important functions.

In this embodiment, the filter segment may comprise a porous material according to one embodiment of the invention.
The ratio of the porous material to the entire filter segment is not particularly limited, and is usually 5% by volume or more, preferably 10% by volume or more, more preferably 15% by volume or more. Moreover, it is usually 100% by volume or less, preferably 90% by volume or less.

The method for including the porous material according to one embodiment of the present invention in the filter segment 13 is not particularly limited. It can be interspersed before processing. In addition, crushed porous material can be added to or held in the inside of a cylindrical column made of tow, paper, or the like, between the process of processing into a cylindrical shape and the wrapping process. Also, the porous material itself according to this embodiment may be used as the filter segment.

The shape of the filter segment 13 is not particularly limited, and a known shape can be adopted. Usually, it can be a columnar shape, and the following aspects are possible.
In addition, the filter segment 13 may be provided with a section such as a cavity (center hole or the like) or a recess having a hollow section in the circumferential direction.

4. The circumferential cross-sectional shape of the filter segment 13 is substantially circular, and the diameter of the circle can be changed according to the size of the product. It is preferably 5 mm or more and 8.5 mm or less, 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 circumference of the cross-sectional shape of the filter segment 13 in the circumferential direction can be appropriately changed according to the size of the product. and more preferably 16.0 mm or more and 25.0 mm or less.
The axial length of the filter segment 13 can be appropriately changed according to the size of the product, but is usually 15 mm or more and 35 mm or less, preferably 17.5 mm or more and 32.5 mm or less, and 20.0 mm. Above, it is more preferable to be 30.0 mm or less.
The shape and dimensions of the filter medium can be appropriately adjusted so that the shape and dimensions of the filter segment 13 are within the above ranges.

The ventilation resistance per 120 mm of axial length of the filter segment 13 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, and 90 mmH 2 O or more. ₂ O or more and 260 mmH ₂ O or less is more preferable.
The above airflow resistance is measured according to the ISO standard method (ISO6565) using, for example, a filter airflow resistance measuring instrument manufactured by Cerulean. The ventilation resistance of the filter segment 13 is such that a predetermined air flow rate (17.5 cc/ min) indicates the air pressure difference between the first end surface and the second end surface when air is flowed. Units are generally expressed in _mmH2O . It is known that the relationship between the ventilation resistance of the filter segment 13 and the length of the filter segment 13 is proportional in the length range (5 mm to 200 mm in length) that is usually implemented, and if the length is doubled , the ventilation resistance of the filter segment 13 is doubled.

The mode of the filter segment 13 is not particularly limited, and can be a plain filter including a single filter segment, a multi-segment filter including a plurality of filter segments such as a dual filter or a triple filter, or the like. When a multi-segment filter is formed, filter segments containing the porous material according to one embodiment of the present invention and filter segments not containing the porous material can be provided. In this case, the filter segment containing the porous material may be provided between the filter segment containing no porous material and the cooling segment, and the filter segment containing no porous material is the filter segment containing the porous material. and the cooling segment. From the viewpoint of facilitating adjustment of the cooling effect of the porous material, the filter segment containing the porous material is preferably provided between the filter segment not containing the porous material and the cooling segment.

The density of the filter material constituting the filter segment 13 is not particularly limited, but is usually 0.10 g/cm ³ or more and 0.25 g/cm ³ or less, and 0.11 g/cm ³ or more and 0.24 g/cm ³ . It is preferably 0.12 g/cm ³ or more and 0.23 g/cm ³ or less.

The mode of the filter material contained in the filter segment 13 is not particularly limited, and a known mode may be adopted. For example, cellulose acetate tow may be processed into a cylindrical shape. The single filament fineness and total fineness of the cellulose acetate tow are not particularly limited, but in the case of a mouthpiece member with a circumference of 22 mm, the single filament fineness is 5 g/9000 m or more and 12 g/9000 m or less, and the total fineness is 12000 g/9000 m or more and 35000 g. /9000 m or less is preferable. The cross-sectional shape of the fibers of cellulose acetate tow may be circular, elliptical, Y-shaped, I-shaped, R-shaped, and the like. In the case of a filter filled with cellulose acetate tow, triacetin may be added in an amount of 5% by weight or more and 10% by weight or less based on the weight of cellulose acetate tow in order to improve filter hardness. Alternatively, a paper filter filled with sheet-like pulp paper may be used instead of the acetate filter.

The filter segment 13 can be produced by a known method. For example, when synthetic fibers such as cellulose acetate tow are used as the material for the filter medium, a polymer solution containing a polymer and a solvent is spun and crimped. It can be manufactured by a method. As the method, for example, the method described in International Publication No. 2013/067511 can be used.

Filter media may comprise crushable excipient release containers (eg, capsules) with crushable outer shells such as gelatin. The embodiment of the capsule (also called "excipient release container" in the technical field) is not particularly limited, and any known embodiment may be adopted. It can be a container. In this case, the capsule, when broken before, during or after use by the user of the tobacco product, releases the liquid or substance (usually a flavoring agent) contained within the capsule, which then releases the liquid or The substances are transferred to the tobacco smoke during use of the tobacco product and to the surrounding environment after use.
The shape of the capsule is not particularly limited, and may be, for example, an easily breakable capsule, and the shape is preferably spherical. The additive contained in the capsule may contain any of the additives described above, but it is particularly preferable to contain a flavoring agent and activated carbon. Additives may also include one or more materials to help filter smoke. Although the form of the additive is not particularly limited, it is usually liquid or solid. It should be noted that the use of capsules containing excipients is well known in the art. Destructible capsules and methods of making them are well known in the art.
Flavoring agents may include, for example, menthol, spearmint, peppermint, fenugreek, cloves, medium-chain triglycerides (MCT), and the like. The flavoring agent can be menthol, or menthol and the like, or combinations thereof.

From the viewpoint of improving the strength and structural rigidity, the filter segment 13 may include a paper roll (filter plug paper roll) wound with the above filter material. Embodiments of the web are not particularly limited and may include 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. Moreover, when the filter consists of two or more segments, it is preferable to wind these two or more segments together.
The material of the roll paper is not particularly limited, and known materials can be used, and it may contain a filler such as calcium carbonate.
The thickness of the roll paper 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 web 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.
Further, the web may or may not be coated, but from the viewpoint of imparting functions other than strength and structural rigidity, it is preferably coated with a desired material.

The filter segment 13 may further include a center hole segment having one or more hollow portions. The center hole segment is usually arranged closer to the cooling segment than the filter media, preferably adjacent to the cooling segment.

A center hole segment is composed of a filling layer having one or more hollow portions and an inner plug wrapper (inner wrapping paper) covering the filling layer. For example, the center hole segment is composed of a filling layer having a hollow portion and an inner plug wrapper covering the filling layer. The center hole segment has the function of increasing the strength of the mouthpiece. The filling layer has an inner diameter of φ1.0 mm or more, φ5. It can be a rod of 0 mm or less. Since the packed bed has a high packing density of fibers, air and aerosol flow only through the hollow portion during suction, and hardly flow inside the packed bed. Since the filling layer inside the center hole segment is a fiber filling layer, the feeling of touch from the outside during use is less likely to cause discomfort to the user. Note that the center hole segment may not have the inner plug wrapper and may retain its shape by thermoforming.

The center hole segment and filter media may be connected, for example, with an outer plug wrapper (outer wrapping paper). The outer plug wrapper can be, for example, a cylinder of paper. Further, the tobacco rod portion 11, the cooling segment 12, and the connected center hole segment and filter material may be connected by, for example, mouthpiece lining paper. For these connections, for example, paste such as vinyl acetate paste is applied to the inner surface of the mouthpiece lining paper, and the tobacco rod portion 11, the cooling segment 12, and the already connected center hole segment and filter material are placed and wound. You can connect with In addition, these may be divided into multiple times and connected with multiple lining papers.

(cooling segment)
The cooling segment 12 is sandwiched adjacent to the tobacco rod portion and the filter segment, and is typically a rod-shaped member provided with a cavity having a hollow circumferential section such as a cylinder.
In the cooling segment of this embodiment, the cavity may be filled with the porous material according to one embodiment of the present invention.

In the present embodiment, the method of filling the cooling segment with the porous material is not particularly limited. For example, the porous material itself molded into a desired shape may be used as the cooling segment. The cooling segment may be formed by integrating the material, or the cooling segment may be formed by wrapping the material with a roll of paper or the like that can be used for the filter segment. The porous material according to an embodiment of the present invention may be uniformly present throughout the cooling segment or concentrated in a portion of the cooling segment. Specific embodiments in which the porous material is concentrated in a part of the cooling segment include an embodiment in which it is concentrated on the tobacco rod side or the filter segment side, and a mode in which it is concentrated on the peripheral edge of the cross section perpendicular to the longitudinal direction. and the like. Moreover, it is preferable that there is no gap between the porous material and other material such as the roll paper in the cross section perpendicular to the longitudinal direction.
The ratio of the porous material to the entire cooling segment is not particularly limited, and from the viewpoint of improving cooling efficiency, it is usually 5% by volume or more, preferably 10% by volume or more, and 15% by volume or more. is more preferred. Moreover, it is usually 100% by volume or less, preferably 90% by volume or less.

As shown in FIG. 1, the cooling segment 12 may be provided with perforations V (also referred to as "ventilation filter (Vf)" in this technical field) circumferentially and concentrically. . In addition, the number of the openings V is not particularly limited, and for example, there may be eight. Furthermore, the aperture may exist in an area of 4 mm or more in the direction of the cooling segment from the boundary between the cooling segment and the filter segment.
The existence of the openings V allows air to flow into the cooling portion from the outside during use, thereby lowering the temperature of the components and air flowing in from the tobacco rod portion. Furthermore, by setting the position of the cooling segment within a region of 4 mm or more in the direction of the cooling segment side from the boundary between the cooling segment and the filter segment, not only the cooling capacity is improved, but also the components generated by heating It is possible to suppress retention in the cooling segment and improve the delivery amount of the component.
In addition, when an aerosol base material is used for the tobacco rod portion, vapor containing the aerosol base material and the tobacco flavor component generated by heating the tobacco rod portion comes into contact with air from the outside and the temperature of the vapor is lowered. can facilitate liquefaction and the formation of an aerosol.
Further, when the holes V existing concentrically are treated as one hole group, the number of hole groups may be one, or two or more. When there are two or more hole groups, from the viewpoint of improving the delivery amount of the component generated by heating, a hole group is formed in a region of less than 4 mm in the direction of the cooling segment from the boundary between the cooling segment and the filter segment. is preferably not provided.
When the non-combustion heating tobacco 10 has the tobacco rod portion 11, the cooling segment 12, and the filter segment 13 wrapped with the tipping paper 15, the tipping paper 15 is provided with the cooling segment 12. An aperture is preferably provided at a position directly above the aperture V. When producing such a non-combustion heating tobacco 10, tipping paper 15 having openings overlapping with the openings V may be prepared and wrapped. After making the non-combustion heated tobacco 10 with the cooling segment 12 without V, it is preferred to drill holes through the cooling segment 12 and the tipping paper 15 at the same time.

From the viewpoint of improving the delivery of the components generated by heating, the region where the openings V are present is particularly a region that is 2 mm or more away from the boundary between the cooling segment 12 and the filter segment 13 in the direction of the cooling segment. Although not limited, it is preferably 3 mm or more, preferably 4 mm or more, more preferably 5 mm or more, further preferably 5.5 mm or more, from the viewpoint of further improving the delivery of the component. Also, from the viewpoint of ensuring a cooling function, the length is preferably 15 mm or less, more preferably 10 mm or less, and even more preferably 6 mm or less.
From the viewpoint of improving the delivery of components generated by heating, the region where the openings V are present is preferably a region separated from the mouth end of the non-combustion heating cigarette in the direction of the cooling segment by 22 mm or more, and preferably 23 mm or more. preferably 24 mm or more, more preferably 25 mm or more, further preferably 25.5 mm or more, and preferably 35 mm or less from the viewpoint of ensuring the cooling function. , 30 mm or less, and more preferably 26 mm or less.
Considering the boundary between the cooling segment 12 and the tobacco rod portion 11 as a reference, when the length of the cooling segment 12 in the axial direction is 20 mm or more, the region where the opening V exists is not sufficient to ensure the cooling function. Therefore, from the boundary between the cooling segment 12 and the tobacco rod portion 11, the region is preferably 2 mm or more in the direction of the cooling segment, more preferably 5 mm or more, further preferably 10 mm or more, It is particularly preferably 14.5 mm or more, and from the viewpoint of improving the delivery of components generated by heating, it is preferably 18 mm or less, more preferably 16 mm or less, and 14.5 mm or less. is more preferred.

Although the diameter of the aperture V is not particularly limited, it is preferably 100 µm or more and 1000 µm or less, and more preferably 300 µm or more and 800 µm or less. The aperture is preferably substantially circular or substantially elliptical, and in the case of the substantially elliptical shape, the aforementioned diameter represents the major axis.

The length of the cooling segment in the longitudinal direction can be appropriately changed according to the size of the product, but is usually 4 mm or more, preferably 5 mm or more, more preferably 6 mm or more, and usually 31 mm. or less, preferably 26 mm or less, more preferably 21 mm or less. By setting the length of the cooling segment in the longitudinal direction to the lower limit or more, a sufficient cooling effect can be secured and a good flavor can be obtained. It is possible to suppress loss due to adhesion to the inner wall of the segment.

[Tobacco rod part]
The form of the tobacco rod portion 11 is not particularly limited as long as it is a known form, but is usually a form in which a tobacco filler is wrapped with wrapping paper. The tobacco filling is not particularly limited, and known materials such as shredded tobacco and reconstituted tobacco sheets can be used. The tobacco fill may also contain an aerosol base. The aerosol base is a base that generates an aerosol when heated, and is exemplified by glycerin, propylene glycol, triacetin, 1,3-butanediol, and mixtures thereof.
The content of the aerosol base in the tobacco filling is not particularly limited, and is usually 5% by weight or more relative to the total weight of the tobacco filling from the viewpoint of sufficiently generating an aerosol and imparting a good flavor. , preferably 10% by weight or more, and usually 50% by weight or less, preferably 15% by weight or more and 25% by weight or less.

Further, the tobacco rod portion 11 may have a fitting portion with a heater member or the like for heating non-combustion heating tobacco.
It is preferable that the tobacco rod portion 11 formed by wrapping the tobacco filling material with wrapping paper has a columnar shape. The aspect ratio represented by the height of is preferably 1 or more.
The shape of the bottom surface is not limited, and may be a polygon, a polygon with rounded corners, a circle, an ellipse, etc. The width is the diameter when the bottom surface is circular, the major axis when the bottom surface is elliptical, the polygon or the polygon with rounded corners. Case is the diameter of the circumscribed circle or the major axis of the circumscribed ellipse. It is preferable that the tobacco filling material constituting the tobacco rod portion 11 has a height of about 10 to 70 mm and a width of about 4 to 9 mm.

The length of the longitudinal direction of the tobacco rod portion 11 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. and 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 length of the tobacco rod portion 11 to the length h in the longitudinal direction of the non-combustion heating tobacco 10 is usually 10% or more, preferably 20% or more, from the viewpoint of the balance between the delivery amount and the aerosol temperature. It is preferably 25% or more, more preferably 30% or more, and is usually 60% or less, preferably 50% or less, and 45% or less. More preferably, it is 40% or less.

(rolling paper)
The structure of the wrapping paper is not particularly limited, and it can be in a general form, for example, a paper containing pulp as a main component. As for 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 cigarette paper, are mixed. and obtained by manufacturing.
The types of pulp that can be used include chemical pulp, ground pulp, chemi-grand pulp, thermomechanical pulp, and the like prepared by the kraft cooking method, acid/neutral/alkaline sulfite cooking method, soda salt cooking method, and the like.

Using the above pulp, in the papermaking process using a fourdrinier paper machine, a cylinder paper machine, a round and short combined paper machine, etc., the texture is adjusted and uniformed to produce wrapping paper. If necessary, a wet strength agent may be added to impart water resistance to the wrapping paper, or a sizing agent may be added to adjust the printing quality of the wrapping paper. In addition, aluminum sulfate, various anionic, cationic, nonionic or amphoteric retention improvers, drainage improvers, and papermaking internal additives such as paper strength agents, as well as dyes, pH adjusters, Papermaking additives such as antifoam agents, pitch control agents, and slime control agents can be added.

The basis weight of the base paper for wrapping paper 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 having the above properties is not particularly limited, and is usually 10 μm or more, preferably 20 μm or more, more preferably 30 μm or more, from the viewpoint of rigidity, air permeability, and ease of adjustment during paper production. and is usually 100 μm or less, preferably 75 μm or less, more preferably 50 μm or less.
The shape of the wrapping paper of the non-combustion-heating cigarette may be square or rectangular.
When used as a wrapping paper for wrapping a tobacco filling (for producing a tobacco rod portion), the length of one side can be about 12 to 70 mm, and the length of the other side is about 15 to 28 mm. A preferable length of one side is 22 to 24 mm, and a more preferable length is about 23 mm. When the tobacco filling is wrapped with wrapping paper in a columnar shape, for example, the end of the wrapping paper in the w direction and the end on the opposite side are overlapped by about 2 mm and glued to form a columnar paper tube. It becomes a shape filled with tobacco filling. The size of the rectangular wrapping paper can be determined according to the size of the finished tobacco rod portion 11 .
When the tobacco rod portion 11 and another member adjacent to the tobacco rod portion 11 are connected and wound like chip paper, the length of one side is 20 to 60 mm, and the length of the other side is 15 to 60 mm. 28 mm can be mentioned.

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

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

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

[Tip paper]
The configuration of the tipping paper 15 is not particularly limited, and may be a general form, for example, one containing pulp as a main component. As for 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.
Also, the tipping paper 15 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. prepared by kraft cooking method, acid/neutral/alkaline sulfite cooking method, soda salt cooking method or the like can be used.
Note that the tip paper 15 may be manufactured by a manufacturing method to be described later, or may be a commercially available product.
The shape of the tipping paper 15 is not particularly limited, and can be square or rectangular, for example.

The basis weight of the tipping paper 15 is not particularly limited, but is usually 32 gsm or more and 40 gsm or less, preferably 33 gsm or more and 39 gsm or less, and more preferably 34 gsm or more and 38 gsm or less.
The thickness of the tipping paper 15 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 air permeability of the tipping paper 15 is not particularly limited, but is generally 0 Coresta unit or more and 30000 Coresta unit or less, preferably greater than 0 Coresta unit and 10000 Coresta unit or less. ^The air permeability referred to in this specification is a value measured in accordance with ISO 2965:2009. It is expressed in flow rate (cm ³ ). One Coresta unit (1 C.U.) is 1 cm ³ /(min·cm ² ) under 1 kPa.

The chipping paper 15 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.

In addition to the above pulp and filler, the chipping paper 15 may be added with various auxiliary agents, for example, it may have a water resistance improver to improve it. Water resistance improvers include wet strength agents (WS agents) and sizing agents. Examples of wet strength agents include urea formaldehyde resins, melamine formaldehyde resins, polyamide epichlorohydrin (PAE), and the like. Examples of sizing agents include rosin soap, alkyl ketene dimer (AKD), alkenyl succinic anhydride (ASA), and highly saponified polyvinyl alcohol having a degree of saponification of 90% or more.

A coating agent may be added to at least one of the front and back sides of the tip paper 15 . 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.

[Method for producing non-combustion heated tobacco]
The method for producing the above-described non-combustion heating tobacco is not particularly limited, and known methods can be applied. For example, it can be produced by winding the tobacco rod portion and the mouthpiece portion with tipping paper.

<Electric heating tobacco products>
An electrically heated tobacco product (also referred to simply as an "electrically heated tobacco product") according to another embodiment of the present invention comprises a heater member, a battery unit serving as a power source for the heater member, and a device for controlling the heater member. and a control unit for heating and the above non-combustion heated tobacco inserted into contact with the heater member.
As an aspect of the electrically heated tobacco product, it may be an aspect in which the outer peripheral surface of the non-combustion heating tobacco 10 is heated as shown in FIG. A mode of heating from the inside of the rod portion 11 may be employed. Although the electrically heated device 20 shown in FIGS. 2 and 3 is provided with an air introduction hole, it is not shown here. The electrically heated tobacco product 30 will be described below with reference to FIG. 2 and 3, the symbols representing the components shown in FIG. 1 are partially omitted.
The electrically heated tobacco product 30 is used by inserting the above-described non-combustion heated tobacco 10 into contact with the heater member 21 arranged inside the electrically heated device 20 .
The electrically heated device 20 has, for example, a battery unit 22 and a control unit 23 inside a resin frame 24 .
When the non-combustion heating tobacco 10 is inserted into the electric heating device 20, the outer peripheral surface of the tobacco rod portion 11 comes into contact with the heater member 21 of the electric heating device 20, and eventually the entire outer peripheral surface of the tobacco rod portion 11 and the tipping paper come into contact with each other. contacts the heater member 21 .
The heater member 21 of the electric heating device 20 generates heat under the control of the control unit 23 . When the heat is transmitted to the tobacco rod portion 11 of the non-combustion heating tobacco 10, the aerosol base material, the flavor component, and the like contained in the tobacco filler of the tobacco rod portion 11 volatilize.

The heater member 21 may be, for example, a sheet heater, a flat heater, or a tubular heater. A sheet-shaped heater is a flexible sheet-shaped heater, for example, a heater including a heat-resistant polymer film (about 20 to 225 μm in thickness) such as polyimide. A flat heater is a rigid flat heater (having a thickness of about 200 to 500 μm), and includes, for example, a heater having a resistance circuit on a flat plate substrate and using the relevant portion as a heat generating portion. A cylindrical heater is a hollow or solid cylindrical heater (thickness of about 200 to 500 μm), and includes, for example, a heater that has a resistance circuit on the outer peripheral surface of a cylinder made of metal or the like and uses that portion as a heat generating portion. . Further, a rod-shaped heater and a cone-shaped heater made of metal, etc., which have a resistance circuit inside and use the relevant portion as a heat generating portion, may also be used. The cross-sectional shape of the tubular heater may be a circle, an ellipse, a polygon, a polygon with rounded corners, or the like.
In the case of heating the outer peripheral surface of the non-combustion heating tobacco 10 as shown in FIG. 2, the above-described sheet-like heater, flat-plate-like heater, and cylindrical heater can be used. On the other hand, in the case of heating from the inside of the tobacco rod portion 11 of the non-combustion heating tobacco 10 as shown in FIG.
The longitudinal length of the heater member 21 can be within a range of L±5.0 mm, where L mm is the longitudinal length of the tobacco rod portion 11 . The length of the heater member 21 in the longitudinal direction is L mm from the viewpoint of aerosol delivery, that is, the length of the heater member 21 in the long axis direction is sufficient to sufficiently conduct heat to the tobacco rod portion 11 and sufficiently volatilize the aerosol base material and flavor components contained in the tobacco filler. From the viewpoint of suppressing the generation of components that have an undesired effect on flavor, etc. 0 mm or less, L+3.5 mm or less, L+4.0 mm or less, L+4.5 mm or less, or L+5.0 mm or less.

The heating intensity such as the heating time and heating temperature of the non-combustion heating tobacco 10 by the heater member 21 can be set in advance for each electrically heated tobacco product 30 . For example, after inserting the non-combustion heating tobacco 10 into the electrically heating device 20, preheating is performed for a certain period of time so that the outer circumference of the portion of the non-combustion heating tobacco 10 inserted into the electrically heating device 20 It can be set in advance so that the surface is heated until the temperature reaches X (° C.), and then the temperature is maintained at a constant temperature of X (° C.) or less.
The above X (° C.) is preferably 80° C. or higher and 400° C. or lower from the viewpoint of delivery amount of components generated by heating. Specifically, 80°C, 90°C, 100°C, 110°C, 120°C, 130°C, 140°C, 150°C, 160°C, 170°C, 180°C, 190°C, 200°C, 210°C, 220°C, 230°C, 240°C, 250°C, 260°C, 270°C, 280°C, 290°C, 300°C, 310°C, 320°C, 330°C, 340°C, 350°C, 360°C, 370°C, 380°C, 390°C , 400° C.
Vapor containing components derived from the aerosol base material and components derived from flavor components generated from the tobacco rod portion 11 by heating by the heater member 21 passes through the mouthpiece portion 14 composed of the cooling segment 12, the filter segment 13, and the like, and reaches the user. reach the oral cavity of

The openings V provided in the cooling segment 12 are arranged as shown in FIG. It is preferable that the segment 12 is located closer to the mouth end than the mouth end side end of the region in contact with the electrically heated device 20 (point indicated by arrow X in the figure). The insertion opening of the electrically heated device 20 for the non-combustion heating tobacco 10 may be tapered as shown in FIG. 5 in order to facilitate the insertion of the non-combustion heating tobacco 10. , and the end portion of the region in contact with the electrically heated device 20 on the side of the mouth end is the position indicated by the arrow Y in the figure. 4 and 5, the symbols representing the components shown in FIGS. 1 to 3 are partially omitted.

Although the present invention will be described more specifically by way of examples, the present invention is not limited to the description of the following examples as long as it does not deviate from the gist thereof.

<Preparation of coolant>
Granular activated carbon (Kuraraycoal GGS-N 28/70) was used as the porous granular substrate contained in the coolant. The granular activated carbon had a BET specific surface area of 1169 m ² /g, a pore volume of 0.493 ml/g, and an average particle size of 356 µm.
Granular activated carbon is put into Spiraflow (manufactured by Freund Sangyo Co., Ltd.), rotor / agitator rotation of the fluidized bed (rotor rotation speed 200 rpm, agitator rotation speed 300 rpm, the agitator rotates in the opposite direction to the rotor rotation), hot air is supplied (Supplied air temperature 80° C., supplied air flow rate 4.5 to 6.0 m ³ /min), centrifugal rolling, floating flow, and swirling flow were performed while exhausting.
A 50% by weight propylene glycol aqueous solution was atomized and added slowly while the activated carbon was flowing.
The speed of adding the solution, the temperature of the hot air, and the amount of air supply were adjusted so that the amount of water added by adding the solution was balanced with the amount of water removed by the hot air so that the activated carbon could maintain a sufficient amount of water to keep it in a fluid state.
After the total amount of the solution was added, the granules were dried while being fluidized by hot air supply and exhaust until the water content of the granules reached about 3% by weight.
The resulting coolant had an average particle size of 362 μm, a bulk density of 0.747 g/cm ³ , and a propylene glycol content of 28.0% by weight.

<Production of porous material>
Celanese's CELFX ^™ MATRIX TECHNOLOGY was used to prepare the porous material. Specifically, 1.929 g of the coolant and 0.643 g of a binder resin (UHMWPE, GUR (registered trademark) manufactured by Celanese) were mixed, placed in a mold, and heated to 220° C. for 40 minutes. After heating, the material was removed from the mold and cooled to obtain a rod-shaped porous material. Table 1 shows the ventilation resistance, length and weight of the obtained porous material.

 

The weight of the coolant contained in the obtained rod-shaped porous material was 1.9293 g. The weight of the binder resin contained in the obtained rod-shaped porous material was 0.6431 g.
When the porous material according to one embodiment of the present invention is used, the coolant does not move due to impact such as vibration during transportation or use, and gaps do not occur. It can keep the flavor of cigarettes constant.

10 non-combustion heated tobacco 11 tobacco rod portion 12 cooling segment 13 filter segment 14 mouthpiece portion 15 chip paper V aperture 20 electric heating device 21 heater member 22 battery unit 23 control unit 24 frame 30 electric heating tobacco product

Claims (12)

1. A porous material for non-combustion-heating cigarettes containing a coolant and a binder resin,
   the cooling agent comprises a polyhydric alcohol and a porous granular substrate;
   The granular base material is impregnated with the polyhydric alcohol,
   A porous material for non-combustion-heating cigarettes, wherein the coolants are bonded to each other through the binder resin.
2. The porous material for non-combustion heating cigarettes according to claim 1, wherein the content of said polyhydric alcohol in said coolant is 3% by weight or more and 39% by weight or less.
3. 3. The non-combustion heating tobacco product according to claim 1 or 2, wherein said porous granular base material is one or more selected from the group consisting of charcoal, calcium carbonate, cellulose, acetate, sugar, starch and chitin. Porous material.
4. The non-combustion heating type porous material for tobacco according to any one of claims 1 to 3, wherein the porous granular base material has a pore volume of 0.3 ml/g or more and 0.8 ml/g or less. material.
5. The porous material for non-combustion heating cigarettes according to any one of claims 1 to 4, wherein the coolant has an average particle size of 200 µm or more and 550 µm or less.
6. The porous material for non-combustion heating cigarettes according to any one of claims 1 to 5, wherein the coolant has a bulk density of 0.55 g/cm ³ or more and 0.80 g/cm ³ or less.
7. The porous material for non-combustion heating cigarettes according to claims 1 to 6, wherein the binder resin is a polyolefin that is a polymer of a monomer containing an olefin having 2 to 6 carbon atoms.
8. The porous material for non-combustion heating cigarettes according to claim 7, wherein the polyolefin is ultra-high molecular weight polyethylene (UHMWPE).
9. The porous material for non-combustion heating cigarettes according to any one of claims 1 to 8, wherein the weight ratio of said binder resin to said coolant is 0.20 or more and 0.45 or less.
10. A non-combustion heating tobacco having a mouthpiece portion containing the porous material for non-combustion heating tobacco according to any one of claims 1 to 9.
11. 11. An electric heating device comprising a heater member, a battery unit serving as a power source for the heater member, and a control unit for controlling the heater member, and an electric heating device inserted in contact with the heater member. and non-combustion heated tobacco according to .
12. A method for producing the non-combustion heating type porous material for cigarettes according to any one of claims 1 to 9, comprising heating the coolant and the binder resin in a mold, A method for producing a porous material for non-combustion heated cigarettes.

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