RU2789024C1 - Tobacco product heated without burning and tobacco product with heating - Google Patents

Abstract

FIELD: tobacco industry.

SUBSTANCE: group of inventions relates to smoking products. The tobacco product heated without burning contains tobacco filler, tipping paper, a mouthpiece element. In a tobacco product, at least part of the tobacco filler is heated at 150°C or above. The tobacco filler includes the starting material for the aerosol, benzoic acid is added to at least one of the tobacco filler, tipping paper and mouthpiece element so that the concentration in the addition object to which benzoic acid is added is 100 ppm or more and 10000 ppm or less. Benzoic acid is added to the section of the addition object, which is heated to 150°C or above and 250°C or lower, when the tobacco product heated without burning is heated.

EFFECT: elimination of smoke aroma suppression is ensured throughout the entire use of the tobacco product.

24 cl, 8 dwg, 3 tbl

Description

Technical field

[0001] The present invention relates to a non-burning heated tobacco product and a heated tobacco product.

State of the art

[0002] A heated tobacco product has been developed, consisting of a non-burning heated tobacco product and a heating device including a heat source. The non-burning heated tobacco product typically includes a tobacco excipient consisting of a composition including ground tobacco, an aerosol starting material, and the like. When a heated tobacco product is used, the non-burning heated tobacco product is inserted or placed in the heating device. The heat source of the heating device is then allowed to generate heat, and the tobacco filler in the non-burning heated tobacco product is heated using this heat, whereby the smoke flavor component is delivered to the user along with the aerosols.

[0003] In the field of technology related to tobacco, especially in the field of non-burning heated tobacco products, there are cases where the smoke flavor component generated when the tobacco filler is heated causes the user to experience the “smoke aroma suppression” described below, and it is desirable to eliminate suppression of the smoke aroma and improve the taste of the smoke of the non-burning heated tobacco product. A technique for adding an acid satisfying certain conditions (monobasic acid dissociation constant: 4.0 or more and 6.0 or less, boiling point: 366°C or more and 600°C or less) to tobacco filler of a non-burning heated tobacco product has been proposed. to eliminate smoke aroma suppression (PTL 1).

Citation list

Patent Literature

[0004] PTL 1: International Publication No. WO2017/203686

The essence of the invention

Technical task

[0005] However, an acid that satisfies the specific conditions described in PTL 1 is an acid having a very high boiling point, and accordingly, the present inventors conducted a study to eliminate smoke flavor suppression with an acid that does not satisfy these specific conditions.

The study attempted to add benzoic acid, which is commonly used as a food additive, to a non-burning heated tobacco product. The boiling point of benzoic acid is 249°C, which is lower than that of the acid used in PTL 1. Therefore, benzoic acid volatilizes in a short time when using a non-burning heated tobacco product in which the tobacco filler is heated at a temperature that is close to its point boiling, and the effect of eliminating the suppression of the smoke aroma cannot be maintained until the last stage of use of one non-burning heated tobacco product. On the other hand, when using a non-burning heated tobacco product in which the tobacco filler is heated at a temperature much lower than the boiling point of benzoic acid, benzoic acid is not sufficiently volatilized, and therefore, the effect of removing smoke flavor suppression is not expected to be achieved.

Thus, it is an object of the present invention to provide a flameless heated tobacco product and a heated tobacco product that solves the above problems and can eliminate the suppression of smoke flavor throughout the use of a single flameless tobacco product from the initial stage to the last stage without impairing said effect. adding benzoic acid.

The solution of the problem

[0006] The present inventors have made intensive studies and found that by adding a certain concentration of benzoic acid to at least one addition object that is an integral part of a non-burning heated tobacco product, smoke flavor suppression can be eliminated throughout the use of one non-burning heated tobacco product. product from the initial stage to the last stage, thereby carrying out the present invention.

[0007] Thus, the essence of the present invention is as follows.

[1] A non-burning heated tobacco product comprising a tobacco filler, wrapping paper that wraps the tobacco filler, and a mouthpiece,

wherein in the non-burning heated tobacco product, at least a portion of the tobacco filler is heated at 150°C or higher,

the tobacco filler comprises an aerosol starting material, and

benzoic acid is added to at least one of the tobacco filler, wrapping paper, and mouthpiece so that the concentration in the addition object to which benzoic acid is added is 100 ppm or more and 10,000 ppm or less.

[2] The non-burning heated tobacco product according to [1], wherein benzoic acid is added to a portion of the addition object that is heated to 150°C or higher and 250°C or lower when the non-burning heated tobacco product is heated.

[3] The non-burning heated tobacco product according to [1] or [2], wherein benzoic acid is added to the tobacco excipient.

[4] The non-burning heated tobacco product according to any one of [1] to [3], wherein the mouthpiece includes at least a backing part and a filtering part, the backing part being closer to the tobacco filler than the filtering part, and benzoic acid is added to supporting part.

[5] The non-burning heated tobacco product according to any one of [1] to [4], wherein the tobacco filler consists of a composition further comprising ground tobacco or ground tobacco.

[6] The non-burning heated tobacco product according to any one of [1] to [4], wherein the tobacco filler consists of a tobacco leaf.

[7] The non-burning heated tobacco product according to any one of [1] to [4], wherein the tobacco filler is composed of tobacco granules.

[8] The non-burning heated tobacco product according to any one of [1] to [7], wherein benzoic acid is added such that the concentration in the addition object is 2000 ppm or more and less than 5000 ppm.

[9] The non-burning heated tobacco product according to any one of [1] to [7], wherein benzoic acid is added such that the concentration in the addition object is 5,000 ppm or more and 10,000 ppm or less.

[10] Electrically heated tobacco product, comprising:

an electric heating device including a heating element, a battery pack that serves as a power source for the heating element, and a control unit for controlling the heating element; and

a non-burning heated tobacco product according to any one of [1] to [9], configured to be inserted so as to be in contact with the heating element.

[11] A non-burning heated tobacco product including a tobacco filler and a tobacco filler holder,

wherein in the non-burning heated tobacco product, at least a portion of the tobacco filler is heated at 150°C or higher,

the tobacco filler comprises an aerosol starting material, and

benzoic acid is added to the tobacco filler so that the concentration in the tobacco filler is 100 ppm or more and 10,000 ppm or less.

[12] The non-burning heated tobacco product of [11], wherein benzoic acid is added to a portion of the tobacco filler that is heated to 150°C or higher and 250°C or lower when the non-burning heated tobacco product is heated.

[13] The non-burning heated tobacco product according to [11] or [12], wherein the tobacco filler consists of a composition further comprising ground tobacco or ground tobacco.

[14] The non-burning heated tobacco product according to [11] or [12], wherein the tobacco filler consists of a tobacco leaf.

[15] The non-burning heated tobacco product according to [11] or [12], wherein the tobacco filler consists of tobacco granules.

[16] The non-burning heated tobacco product according to any one of [11] to [15], wherein benzoic acid is added such that the concentration in the tobacco filler is 2000 ppm or more and less than 5000 ppm.

[17] The non-burning heated tobacco product according to any one of [11] to [15], wherein benzoic acid is added such that the concentration in the tobacco filler is 5,000 ppm or more and 10,000 ppm or less.

[18] A heated tobacco product that uses a combustible heat source, the heated tobacco product including:

a heating device including a tubular holding member extending from an ignition end to a non-ignition end, and a combustible heat source is provided at the ignition end; and

a non-burning heated tobacco product according to any one of [11] to [17], positioned in the retaining member so as to be closer to the non-ignition end than the combustible heat source.

[19] A non-burning heated tobacco product including a tobacco filler and a tobacco filler holder, wherein

in a non-burning heated tobacco product, the tobacco filler is heated at a temperature below 150°C, and

benzoic acid is added to the tobacco filler so that the concentration in the tobacco filler is 100 ppm or more and 10,000 ppm or less.

[20] The non-burning heated tobacco product of [19], further comprising an aerosol starting material.

[21] The non-burning heated tobacco product of [20], wherein the tobacco filler consists of a composition containing ground tobacco or ground tobacco.

[22] The non-burning heated tobacco product of [20], wherein the tobacco filler is composed of a tobacco leaf.

[23] The non-burning heated tobacco product of [20], wherein the tobacco filler is composed of tobacco granules.

[24] The non-burning heated tobacco product according to any one of [20] to [23], wherein benzoic acid is added such that the concentration in the tobacco filler is 2500 ppm or more and less than 5000 ppm.

[25] The non-burning heated tobacco product according to any one of [20] to [23], wherein benzoic acid is added such that the concentration in the tobacco filler is 5,000 ppm or more and 10,000 ppm or less.

[26] Electrically heated tobacco product, comprising:

an electrical heating device including a heating element, a battery pack that serves as a power source for the heating element, a control unit for controlling the heating element, and a mouthpiece; and

heated without combustion tobacco product according to any one of [20] - [25].

Useful effects of the invention

[0008] The present invention provides a non-burning heated tobacco product and a heated tobacco product that can eliminate smoke flavor suppression throughout the use of a single non-burning heated tobacco product from the initial stage to the final stage.

Brief description of the drawings

[0009] [Fig. 1] FIG. 1 is a schematic view of a non-burning heated tobacco product according to a first embodiment of the present invention.

[Fig. 2] FIG. 2 is a schematic view of a non-burning heated tobacco product according to the second and third embodiments of the present invention.

[Fig. 3] FIG. 3 is a schematic view of an electrically heated tobacco product in which the non-burning heated tobacco product according to the first embodiment of the present invention is heated from the inside by an electrical heating device.

[Fig. 4] FIG. 4 is a schematic view of an electrically heated tobacco product in which a non-burning heated tobacco product according to the first embodiment of the present invention is heated from the outside by an electrical heating device.

[Fig. 5] FIG. 5 is a schematic view of a tobacco product in which a non-burning heated tobacco product according to the second embodiment of the present invention is heated by a heating device that uses a combustible-type heat source.

[Fig. 6] FIG. 6 is a schematic view of an electrically heated tobacco product in which a non-burning heated tobacco product according to a third embodiment of the present invention is heated by an electrical heating device.

[Fig. 7] FIG. 7 is a graph showing the change in temperature over time at measurement locations (1) to (3) in a tobacco rod of a non-burning heated tobacco product according to the first embodiment of the present invention, heated from the inside by an electric heating device.

[Fig. 8] FIG. 8 is a graph showing temperature change over time at measurement locations (4) and (5) in a tobacco rod of a non-burning heated tobacco product according to the first embodiment of the present invention, externally heated by an electric heating device.

Description of Embodiments

[0010] Although embodiments of the present invention will be described in detail below, these descriptions are examples (representative examples) of embodiments of the present invention, and the present invention is not limited to the contents of these descriptions as long as they do not depart from its essence.

In this DESCRIPTION, when a range is expressed using numeric or physical property values with a "-" inserted between them, the values before and after the "-" are to be included in that range.

[0011] 1. Non-burning heated tobacco product

The flameless heated tobacco product according to an embodiment of the present invention (hereinafter also simply referred to as "flameless heated tobacco product") is broadly classified into the following embodiments.

In a first embodiment, the non-burning heated tobacco product includes a tobacco filler, wrapping paper that wraps the tobacco filler, and a mouthpiece. In a non-burning tobacco product, at least a portion of the tobacco filler is heated at 150° C. or higher, the tobacco filler includes an aerosol starting material, and benzoic acid is added to at least one of the tobacco filler, wrapping paper, and mouthpiece such that a concentration of the addition object to which benzoic acid is added is 100 ppm or more and 10,000 ppm or less.

In a second embodiment, the non-burning heated tobacco product includes a tobacco filler and a tobacco filler holder. In a non-burning tobacco product, at least a portion of the tobacco filler is heated at a temperature of 150°C or higher, the tobacco filler includes an aerosol starting material, and benzoic acid is added to the tobacco filler such that the concentration in the tobacco filler is 100 ppm or more, and 10000 ppm or less.

In a third embodiment, the non-burning heated tobacco product includes a tobacco filler and a tobacco filler holder. In a non-burning heated tobacco product, the tobacco filler is heated at a temperature below 150°C, and benzoic acid is added to the tobacco filler so that the concentration in the tobacco filler is 100 ppm or more and 10,000 ppm or less.

Each of these embodiments will be described in detail below.

[0012] <First Embodiment>

An example of a non-burning heated tobacco product according to the first embodiment of the present invention (hereinafter also referred to simply as "first non-burning heated tobacco product") is shown in FIG. 1. Next, the first non-burning heated tobacco product will be described with reference to the drawings. The direction indicated by h in FIG. 1 represents the longitudinal direction of the first non-burning heated tobacco product.

As shown in FIG. 1, the configuration of the first non-burning heated tobacco product 1 includes tobacco filler 10, wrapping paper 11, and mouthpiece 12. Each component will be described next. In the first non-burning tobacco product 1, the tobacco filler 10, the wrapping paper 11 and the mouthpiece 12 are also referred to as "adding objects".

In the first non-combustible tobacco product 1, at least a portion of the tobacco filler 10 is heated at a temperature of 150° C. or higher.

For example, in an embodiment in which the tobacco rod constituting the first non-burning heated tobacco product 1 is internally heated by the heating element 105 as shown in FIG. 3, the heating element 105 heats at least a portion of the tobacco filler 10 at 150°C or higher. At least a portion of the tobacco filler 10 in this case refers, for example, to a portion of the tobacco filler that is in contact with the heating element 105, or to a portion of the tobacco filler that is close to the heating element 105 and has a weight of 85% or more of the total weight of the tobacco. excipient in the first non-burning heated tobacco product. In particular, when the first non-burning heated tobacco product has a diameter of 7 mm, at least a portion of the tobacco filler 10 refers to a portion of the tobacco filler that is located at a distance of 2 mm or less from the surface of the heating element.

In an embodiment in which the tobacco rod constituting the first non-burning heated tobacco product 1 is heated from the outside by the heating element 105 as shown in FIG. 4, the heating element 105 heats at least a portion of the tobacco filler 10 at 150°C or higher. At least a portion of the tobacco filler 10 in this case refers, for example, to the area of the tobacco filler that is in contact with the wrapping paper 11 or to the area of the tobacco filler that is close to the heating element 105 and has a weight of 85% or more of the total weight of the tobacco. excipient in the first non-burning heated tobacco product. In particular, when the first non-burning heated tobacco product has a diameter of 7 mm, at least a portion of the tobacco filler 10 refers to a portion of the tobacco filler that is located at a distance of 3 mm or less from the surface of the heating element.

[0013] The first non-burning heated tobacco product preferably has a columnar shape satisfying a shape having an aspect ratio of 1 or more, as defined below.

Aspect Ratio=h/w

w is the width of the bottom surface of the columnar body (in this DESCRIPTION, the width of the bottom surface on the side that is part of the tobacco rod), and h is the height of the columnar body. Preferably, h≥w. However, in this DESCRIPTION, the longitudinal direction is defined as the direction indicated by the letter h, as described above. Thus, even when w≥h, the direction indicated by the letter h is called the longitudinal direction for convenience. The shape of the bottom surface is not limited and may be, for example, polygonal, rounded polygonal, circular, or elliptical. The width w is the diameter when the bottom surface is circular, the largest diameter when the bottom surface is elliptical, and the diameter of the circumscribed circle or the largest diameter of the circumscribed ellipse when the bottom surface is polygonal or circular polygonal. For example, in the embodiment shown in FIG. 1, since the bottom surface is round, its diameter can be determined. The diameter is the width w and the length that is orthogonal to the width w is the height h.

The length h in the longitudinal direction of the first non-burning heated tobacco product is not particularly limited, and is usually, for example, 40 mm or more, preferably 45 mm or more, more preferably 50 mm or more. The length h is usually 100 mm or less, preferably 90 mm or less, more preferably 80 mm or less.

The width w of the bottom surface of the columnar body of the first non-burning tobacco product is not particularly limited, and is usually, for example, 5 mm or more, preferably 5.5 mm or more. The width w is usually 10 mm or less, preferably 9 mm or less, more preferably 8 mm or less.

[0014] <Second and Third Embodiments>

On FIG. 2 shows an example of a non-burning heated tobacco product according to the second and third embodiments of the present invention. Hereinafter, the non-burning heated tobacco product according to the second embodiment is also simply referred to as "the second non-burning heated tobacco product", and the non-burning heated tobacco product according to the third embodiment is also simply referred to as the "third non-burning heated tobacco product". The second and third non-burning heated tobacco products will be described below with reference to FIGS. 2.

The configuration of the second and third non-burning heated tobacco products includes a tobacco filler and a tobacco filler holder as shown in FIG. 2. Each component will be described next. In the following description, the tobacco filler of the second and third non-burning heated tobacco products may be referred to as the "subject to be added".

The shape of the second and third non-burning heated tobacco products is not particularly limited, but since the tobacco filler is held in the holder, said shape may, for example, correspond to the shape of the holder. The holder will be described next.

[0015] In the second non-burning heated tobacco product, at least a portion of the tobacco filler is heated at 150° C. or higher.

For example, in an embodiment where the second non-burning heated tobacco product 2 is heated by a combustible-type heat source 205 as shown in FIG. 5, a combustible type heat source 205 heats at least a portion of the tobacco filler 10 at 150° or higher. At least a portion of the tobacco filler 10 in this case has a weight of 85% or more of the total weight of the tobacco filler in the second non-burning heated tobacco product. Specifically, when the non-burning heated tobacco product has a diameter of 7 mm, at least a portion of the tobacco filler 10 refers to a portion of the tobacco filler that is located at a distance of 2 mm or less from the surface of the combustible-type heat source.

[0016] In the third heated without combustion tobacco product, the temperature at which the tobacco filler is heated is below 150°C.

For example, in an embodiment where the third non-burning heated tobacco product 2 is heated by the heating element 305 as shown in FIG. 6, the heating element 305 heats the tobacco filler 10. In this embodiment, the temperature at which the tobacco filler 10 is heated by the heating element 305 is below 150°C.

Unlike the above, an embodiment in which the tobacco filler is not directly heated by the heating element can also be applied in a third non-burning heated tobacco product. In this embodiment, the third non-burning heated tobacco product further includes an aerosol starting material. In other words, the third non-burning heated tobacco product includes a tobacco filler, a tobacco filler holder, and an aerosol starting material.

The aerosol source material becomes aerosol smoke when heated by the heating element, and the aerosol smoke comes into contact with the tobacco filler, whereby the tobacco filler is heated. The vapor containing the smoke flavor component is generated from the heated tobacco filler.

The starting material for the aerosol will be described below.

[0017] <Benzoic acid>

In the first non-burning heated tobacco product, benzoic acid is added to at least one of the tobacco filler, the wrapping paper, and the mouthpiece.

In the second and third non-burning heated tobacco products, benzoic acid is added to the tobacco excipient.

In the first, second and third non-burning heated tobacco products, benzoic acid is added so that the concentration in the object of addition is in the range of 100 ppm or more and 10,000 ppm or less.

When the concentration of benzoic acid is less than 100 ppm, the suppression of the smoke flavor cannot be eliminated. When the concentration exceeds 10,000 ppm, the desired smoke flavor, especially the stimulating effect inherent in tobacco, cannot be sufficiently obtained.

"Benzoic acid" in this DESCRIPTION does not include derivatives of benzoic acid such as salts of benzoic acid and esters of benzoic acid.

[0018] In this DESCRIPTION, smoke flavor suppression means that when using a non-burning heated tobacco product, the user experiences a different stimulus than tobacco or experiences a physiological spontaneous response such as "suffocation". This is likely due to the fact that the tobacco filler contains a component that suppresses the taste of smoke, and this component volatilizes along with the solvent, such as propylene glycol, resulting in the user experiencing the suppression of the smoke aroma.

In each non-burning heated tobacco product of the present invention, smoke flavor suppression can be eliminated by setting the concentration of benzoic acid within the above range.

Regarding the mechanism by which benzoic acid eliminates smoke flavor suppression during use of each non-burning heated tobacco product, the inventors predicted that benzoic acid and a substance that suppresses smoke flavor contained in the tobacco filler evaporate when heated and combine in a gaseous state. , thereby making it difficult for said substance to bind to the organs in which the user receives smoke odor suppression, that is, the organs from the mouth to the trachea and further from the trachea to the lungs.

In the first and second non-burning heated tobacco products, when the concentration of benzoic acid is set to 2,000 ppm or more and less than 5,000 ppm, a smoke taste having the above-described stimulating effect inherent in tobacco can be obtained sufficiently, and when the concentration of benzoic acid is set to 5,000 ppm or more and 10,000 ppm or less, a smoke taste can be obtained in which the above-described stimulating effect inherent in tobacco is eliminated to some extent.

In the third non-burning heated tobacco product, when the concentration of benzoic acid is set to 2500 ppm or more and less than 5000 ppm, a smoke taste having the above-described stimulating effect inherent in tobacco can be obtained sufficiently, and when the concentration of benzoic acid is set to 5000 ppm or more and 10,000 ppm or less, a smoke taste can be obtained in which the above-described stimulating effect inherent in tobacco is eliminated to some extent.

The concentration of benzoic acid can be controlled by controlling the amount of benzoic acid added to the addition object during the production of each non-burning heated tobacco product.

[0019] In the first and second embodiments of the present invention, benzoic acid is preferably added to the site of the object of addition, which is heated to 150°C or higher and 250°C or lower when the first and second non-burning heated tobacco products are heated.

The present inventors have focused on the relationship between the boiling point of benzoic acid and the temperature in the object of addition during heating of the first and second heated non-burning tobacco products in order to eliminate the suppression of smoke flavor throughout the use of one non-burning tobacco product from the initial stage to the last stage.

As described above, the boiling point of benzoic acid is 249°C. On the other hand, when the first and second non-burning heated tobacco products are used, at least a portion of the tobacco filler is heated at 150° C. or higher by the heat source of the heating device described below. At this time, the temperature of the addition object becomes higher at a position closer to the heat source. Therefore, when benzoic acid is added only to a portion of the addition object that is close to a heat source, and that portion is heated at a temperature much higher than the boiling point of benzoic acid, the benzoic acid volatilizes in a short time. In this case, the suppression of the smoke flavor cannot be eliminated during the entire use of one non-burning heated tobacco product from the initial stage to the final stage.

Thus, the present inventors have found that it is preferable to add benzoic acid to the portion of the object of addition that is heated to 150°C or higher and 250°C or lower when the first and second non-burning heated tobacco products are heated. In such an embodiment, smoke flavor suppression can be eliminated to a greater extent throughout the use of a single non-burning heated tobacco product from the initial stage to the final stage.

[0020] Examples of an embodiment in which benzoic acid is added to a portion of an addition target that is heated to 150°C or higher and 250°C or lower include an embodiment in which benzoic acid is added only to a portion of an addition target that heated to 150°C or higher and 250°C or lower, but other embodiments may be used.

For example, benzoic acid may be added to the entire tobacco excipient that is an integral part of a non-burning heated tobacco product, in which case the distribution of benzoic acid in the tobacco excipient may be uniform or uneven. Alternatively, benzoic acid may be added to the surface of the wrapping paper that is an integral part of the non-burning heated tobacco product that is in contact with the tobacco filler, or benzoic acid may be added to the support structure. In these embodiments, the added benzoic acid may be present in part at a site of the addition site that is heated at a temperature below 150°C and a site of the addition site that is heated at a temperature above 250°C. In this case, the ratio of the content of benzoic acid present in the portion of the addition object that is heated to 150°C or higher and 250°C or less to the content of benzoic acid present in the portion of the addition object that is heated to below 150°C, and in the area of the object of addition, which is heated at a temperature above 250°C, is preferably in the range of 50:50-99:1. These embodiments are advantageous from a manufacturing cost point of view because benzoic acid can be added in a simpler manner than in an embodiment in which benzoic acid is added only to a portion of the addition object that is heated to 150°C or higher and 250°C or below.

By comparison, when benzoic acid is added only to a portion of the addition object that is heated at a temperature above 250°C, when the first and second non-burning heated tobacco products are heated, the benzoic acid volatilizes in a short time, and thus the suppression of the smoke flavor cannot be eliminated. throughout the use of a single non-burning heated tobacco product from the initial stage to the final stage.

As used herein, the phrase "using one flameless heated tobacco product from the initial stage to the final stage" refers to the period from when the user begins to inhale the taste of smoke after heating the flameless heated tobacco product to a predetermined temperature using the heating device (initial stage), until the user no longer tastes smoke (last stage).

The term "boiling point" as used herein means the boiling point at 760 mm Hg. Art.

[0021] <Add object>

1. Tobacco filler

In the first non-burning heated tobacco product, benzoic acid may be added to the tobacco excipient. An example of an embodiment in which benzoic acid is added to the tobacco excipient that is an integral part of the first non-burning heated tobacco product includes an embodiment in which benzoic acid is added to the entire tobacco excipient, in which case the distribution of benzoic acid in the tobacco excipient may be equal or uneven. Alternatively, an embodiment can be used in which benzoic acid is added to the surface of the tobacco filler that is in contact with the wrapping paper.

In the second and third non-burning heated tobacco products, benzoic acid is added to the tobacco excipient. An example of an embodiment in which benzoic acid is added to the tobacco excipient that is an integral part of the second and third non-burning heated tobacco products includes an embodiment in which benzoic acid is added to the entire tobacco excipient, in which case the distribution of benzoic acid in the tobacco filler can be uniform or uneven.

The method for adding benzoic acid to tobacco filler will be described below.

The tobacco filler is not particularly limited, and a filler consisting of a composition containing ground tobacco or ground tobacco (hereinafter also referred to as "first tobacco filler") may be used. The tobacco filler may be a tobacco leaf filler, and examples thereof include a plurality of tobacco leaf filler (hereinafter also referred to as "second tobacco filler") and a single tobacco leaf filler (hereinafter also referred to as "third tobacco filler"). The tobacco filler may also be a granular filler, ie a filler consisting of tobacco granules (hereinafter also referred to as "fourth tobacco filler").

[0022] The tobacco rod formed by wrapping the tobacco filler with wrapping paper preferably has a columnar shape, in which case the aspect ratio of the actual longitudinal height of the tobacco rod to the width of the bottom surface of the tobacco rod being part is preferably 1 or more.

The shape of the bottom surface is not limited and may be, for example, polygonal, rounded polygonal, circular, or elliptical. The width is the diameter when the bottom surface is circular, the largest diameter when the bottom surface is elliptical, and the diameter of the circumscribed circle or the largest diameter of the circumscribed ellipse when the bottom surface is polygonal or circular polygonal. For example, in the embodiment shown in FIG. 1, since the bottom surface is round, its diameter can be determined. The diameter is the width and the length, which is orthogonal to said width, is the height. The tobacco filler component of the tobacco rod preferably has a height of about 10 mm - 70 mm and a width of about 4 mm - 9 mm.

The tobacco rod may have a seat that mates with a heating element or the like for heating a non-burning heated tobacco product.

[0023] 1-1. First tobacco filler

First, the first filler will be described. The ground tobacco material contained in the first filler is not particularly limited, and a known material such as lamina or midrib may be used. A material obtained by grinding dried tobacco leaves to an average particle size of 20 μm to 200 μm to provide ground tobacco and grinding a ground tobacco product that has been homogenized and processed into a leaf (hereinafter also simply referred to as homogenized leaf) can also be used. In addition, a so-called strand-type material can also be used, which is obtained by grinding a homogenized sheet having a length comparable to the longitudinal length of the tobacco rod in a direction that is substantially parallel to the longitudinal direction of the tobacco rod and stuffing into the tobacco rod. The width of the shredded tobacco is preferably 0.5 mm to 2.0 mm for stuffing into a tobacco rod. In the case of a tobacco rod with a circumference of 22 mm and a length of 20 mm, the content of tobacco filler in the tobacco rod may be 200 mg/rod - 800 mg/rod and preferably 250 mg/rod - 600 mg/rod. Various types of tobacco can be used as the tobacco leaves used to prepare the shredded tobacco and the homogenized leaf. Examples include flue-cured tobacco, burley tobacco, oriental tobacco, house tobacco, nicotiana tabacum tobacco, nicotiana rustica tobacco, and mixtures thereof. As for blends, these different types of tobacco can be suitably blended to achieve the desired flavor. Detailed information about types of tobacco is disclosed in "Tabako-no-Jiten (Encyclopedia of Tobacco) by Tobacco Academic Studies Center, March 31, 2009". As for the method for manufacturing the homogenized sheet, that is, the method for grinding tobacco leaves and processing into a homogenized sheet, there are many conventional methods. The first method is to manufacture a paper sheet using a paper manufacturing process. The second method is to mix a suitable solvent, such as water, with ground tobacco leaves until homogeneous, then pour the homogeneous mixture in a thin layer on a metal plate or metal plate strip, and perform drying to obtain a cast sheet. A third method is to mix a suitable solvent, such as water, with ground tobacco leaves until smooth and extrude the homogeneous mixture into a sheet shape to form a rolled sheet. Detailed information on homogenized leaf types is disclosed in "Tabako-no-Jiten (Encyclopedia of Tobacco) by Tobacco Academic Studies Center, March 31, 2009".

[0024] The water content of the tobacco filler may be 10 wt.% - 15 wt.% in relation to the total amount of tobacco filler, and preferably is 11 wt.% - 13 wt.%. This water content eliminates the appearance of stains on wrapping paper and improves workability in the production of tobacco rod.

The ground tobacco contained in the first tobacco filler may be of any size and may be prepared in any manner. For example, dried tobacco leaves cut in widths of 0.5 mm - 2.0 mm can be used.

When using a ground product from a homogenized leaf, a product obtained by grinding dried tobacco leaves to an average particle size of about 20 μm - 200 μm, homogenizing ground tobacco, processing obtained into a sheet and crushing this leaf into pieces 0.5 mm wide - 2.0 mm.

[0025] The first tobacco filler may comprise an aerosol starting material from which aerosol smoke is generated. The type of starting material for the aerosol is not particularly limited, and extracts from various natural products and/or components thereof can be selected depending on the intended use. Examples of the aerosol starting material include glycerin, propylene glycol, triacetin, 1,3-butanediol, and mixtures thereof.

The content of the aerosol starting material in the first tobacco filler is not particularly limited, and in order to generate sufficient aerosols and provide good smoke taste, the content is usually 5 wt.% or more, preferably 10 wt.% or more, and usually 50 wt.% or less, preferably 15 wt.% or more and 25 wt.% or less, relative to the total amount of tobacco filler.

[0026] The first tobacco filler may contain flavor. The flavoring type is not particularly limited, and acetanisole, acetophenone, acetylpyrazine, 2-acetylthiazole, alfalfa extract, amyl alcohol, amyl butyrate, transanethol, star anise oil, apple juice, Peruvian balsam oil, beeswax absolute can be used to provide good smoke taste. , benzaldehyde, benzoin resinoid, benzyl alcohol, benzyl benzoate, benzyl phenylacetate, benzyl propionate, 2,3-butanedione, 2-butanol, butyl butyrate, butyric acid, caramel, cardamom oil, carob absolute, β-carotene, carrot juice, L-carvone, β-caryophyllene, cassia bark oil, cedarwood oil, celery seed oil, chamomile oil, cinnamaldehyde, cinnamic acid, cinnamic alcohol, cinnamon cinnamate, citronella oil, DL-citronellol, clary sage extract, cocoa, coffee, cognac oil, coriander oil, cuminaldehyde, davana oil, δ-decalactone, γ-decalactone, decanoic acid, dill herb oil, 3,4-dimethyl-1,2-cyclopentanedione, 4,5-dimethyl-3-hydroxy-2, 5-digits drofuran-2-one, 3,7-dimethyl-6-octenoic acid, 2,3-dimethylpyrazine, 2,5-dimethylpyrazine, 2,6-dimethylpyrazine, ethyl 2-methylbutyrate, ethyl acetate, ethyl butyrate, ethyl hexanoate, ethyl isovalerate, ethyl lactate, ethyl laurate, ethyl levulinate, ethyl maltol, ethyl octanoate, ethyl oleate, ethyl palmitate, ethyl phenyl acetate, ethyl propionate, ethyl stearate, ethyl valerate, ethyl vanillin, ethyl vanillin glucoside, 2-ethyl-3,(5 or 6)-dimethylpyrazine, 5-ethyl-3-hydroxy-4-methyl-2(5H)-furanone, 2-ethyl-3-methylpyrazine, eucalyptol, fenugreek absolute, genet absolute, gentian root infusion, geraniol, geranyl acetate, grape juice, guaiacol, guava extract, γ-heptalactone, γ-hexalactone, hexanoic acid, cis-3-hexene-1-ol, hexyl acetate, hexyl alcohol, hexyl phenylacetate, honey, 4-hydroxy-3-pentenoic acid lactone, 4-hydroxy-4-(3-hydroxy-1-butenyl)-3,5,5-trimethyl-2-cyclohexen-1-one, 4-(para-hydroxyphenyl)-2-butanone, sodium 4-hydroxyundecanoate, absolute immortelle, β-ionone, isoamyl acetate, isoamyl butyrate, isoamyl fe nyl acetate, isobutyl acetate, isobutyl phenylacetate, jasmine absolute, kola tincture, labdanum oil, terpene-free lemon oil, licorice extract, linalool, linalyl acetate, lovage root oil, maltol, maple syrup, menthol, menthon, L-menthyl acetate, para- methoxybenzaldehyde, methyl-2-pyrrolyl ketone, methyl anthranilate, methyl phenylacetate, methyl salicylate, 4'-methylacetophenone, methylcyclopentenolone, 3-methylvaleric acid, mimosa absolute, molasses, myristic acid, nerol, nerolidol, γ-nonalactone, nutmeg oil, δ -octalactone, octanal, octanoic acid, orange blossom oil, orange oil, orris root oil, palmitic acid, ω-pentadecalactone, peppermint oil, paraguayan petitgrain oil, phenethyl alcohol, phenethyl phenylacetate, phenylacetic acid, piperonal, plum extract, propenyl guaetol , propyl acetate, 3-propylidene phthalide, plum juice, pyruvic acid, raisin extract, rose oil, rum, sage oil, sandalwood oil, mint oil s curly, styrax absolute, marigold oil, tea distillate, α-terpineol, terpinyl acetate, 5,6,7,8-tetrahydroquinoxaline, 1,5,5,9-tetramethyl-13-oxacyclo(8.3.0.0(4.9)) tridecan, 2,3,5,6-tetramethylpyrazine, thyme oil, tomato extract, 2-tridecanone, triethyl citrate, 4-(2,6,6-trimethyl-1-cyclohexenyl)2-buten-4-one, 2, 6,6-trimethyl-2-cyclohexen-1,4-dione, 4-(2,6,6-trimethyl-1,3-cyclohexadienyl)2-buten-4-one, 2,3,5-trimethylpyrazine, γ -undecalactone, γ-valerolactone, vanilla extract, vanillin, veratraldehyde, violet leaf absolute, N-ethyl-p-menthane-3-carboxamide (WS-3) and ethyl 2-(p-menthane-3-carboxamide) acetate ( WS-5). Menthol is especially preferred. These flavors may be used alone or in combination of two or more.

[0027] The flavor content of the first tobacco filler is not specifically limited. To provide a good smoke taste, the content is usually 10,000 ppm or more, preferably 20,000 ppm or more, more preferably 25,000 ppm or more, and usually 70,000 ppm or less, preferably 50,000 ppm or less, more preferably 40,000 ppm or less, even more preferably 33,000 md or less.

[0028] The filling density in the first tobacco filler is not specifically limited. In order to ensure the performance of the first heated non-burning tobacco product and provide a good taste of smoke, the filling density is usually 250 mg/cm ³ or more, preferably 300 mg/cm ³ or more, and usually 400 mg/cm ³ or less, preferably 350 mg. /cm ³ or less.

The first tobacco filler described above is wrapped with wrapping paper to be positioned inside, thereby forming a tobacco rod.

[0029] 1-2. Second tobacco filler

The second tobacco filler consists of a plurality of tobacco sheets that are arranged concentrically. As used here, the phrase "concentrically arranged" means that all tobacco sheets are located in such a way that their centers are in essentially the same position. As used herein, the term "sheet" means an object having a pair of substantially parallel major surfaces and a pair of substantially parallel side surfaces. The second filler is formed by concentrically folding a plurality of tobacco sheets in a direction orthogonal to the longitudinal direction of the first non-burning heated tobacco product.

Examples of sheet base materials include tobacco materials such as tobacco powder, and in particular, tobacco materials are preferred. A tobacco sheet formed from a base sheet of tobacco material including a component that can provide flavor as needed is preferred.

The tobacco leaf may contain an aerosol starting material from which aerosol smoke is formed when heated. An aerosol source such as a polyol such as glycerol, propylene glycol or 1,3-butanediol is added as an aerosol starting material. The amount of aerosol starting material added is preferably 5 wt.% - 50 wt.%, more preferably 15 wt.% - 25 wt.% in relation to the dry weight of tobacco sheets.

[0030] Tobacco sheet will be described as a material prior to its concentric arrangement.

The tobacco sheet can be suitably manufactured by a known method such as papermaking, suspending or rolling. The homogenized sheet described for the first tobacco filler may also be used.

In the case of paper production, the tobacco sheet may be produced by a method comprising the following steps.

1) Dried tobacco leaves are roughly ground and separated into an aqueous extract and a residue by extraction with water.

2) The aqueous extract is concentrated by drying under reduced pressure.

3) Pulp is added to the residue and this mixture is ground with a refiner and then formed into a sheet.

4) The aqueous extract concentrate is added to the molded sheet and drying is performed to obtain a tobacco sheet. In this case, a step of removing some components such as nitrosamines may be included (see Japanese Unexamined Patent Application Publication (PCT Application Translation) No. 2004-510422).

In the case of the suspending method, the tobacco leaf may be manufactured by a method including the following steps.

1) Water, pulp and binder are mixed with ground tobacco leaves.

2) The mixture is spread (cast) and dried.

In this case, the step of removing some components, such as nitrosamines, by irradiating the suspension obtained by mixing water, pulp and binder with ground tobacco leaves, with ultraviolet rays or x-rays, may be included.

[0031] Alternatively, as described in International Publication No. 2014/104078, a nonwoven tobacco sheet produced by a method including the following steps can also be used.

1) Powdered and granular tobacco leaves and binding agent are mixed together.

2) The mixture is placed between the non-woven fabrics.

3) The stack is shaped by heat sealing to obtain a non-woven tobacco sheet.

The type of original tobacco leaves used in the methods described above may be similar to that described for the first filler.

The composition of the tobacco leaf is not particularly limited, and, for example, the content of tobacco raw materials (tobacco leaves) is preferably 50 wt% to 95 wt% based on the total weight of the tobacco leaf. The tobacco leaf may contain a binder, and examples of such a binder include guar gum, xanthan gum, CMC (carboxymethylcellulose) and CMC-Na (carboxymethylcellulose sodium salt). The amount of binder is preferably 1 wt.% - 10 wt.% in relation to the total weight of the tobacco leaf. The tobacco leaf may additionally contain other additives. Examples of additives include fillers such as pulp. The plurality of tobacco sheets used in the present invention may all have the same composition or physical properties, or some or all of the tobacco sheets may have different compositions or physical properties.

[0032] The second tobacco filler can be obtained by providing a plurality of tobacco sheets having different widths, preparing a stack whose width decreases from bottom to top, and rolling this stack by inserting it into a rolling tube. According to this manufacturing method, a plurality of tobacco sheets are drawn in the longitudinal direction and arranged concentrically with respect to the longitudinal axis. Between the longitudinal axis and the innermost tobacco sheet, a seating portion extending in the longitudinal direction may be provided.

In this production method, the stack is preferably prepared in such a way that, after folding, a non-contact area is formed between adjacent tobacco sheets.

If there is a non-contact area (gap) between the tobacco sheets of said plurality in which the tobacco sheets do not touch each other, the flavor channel can be guaranteed to improve the delivery efficiency of the flavor component. At the same time, since heat from the heater can be transferred to the outer tobacco sheets through the contact area between the tobacco sheets of the plurality, high heat transfer efficiency can be ensured.

[0033] In order to provide a non-contact area between the tobacco sheets of said plurality, in which the tobacco sheets do not touch each other, the stack can be prepared by, for example, using embossed tobacco sheets, stacking without gluing together the entire surfaces of adjacent tobacco sheets, performing stacking, in which adjacent tobacco sheets are partially glued together; or stacking, in which adjacent tobacco sheets are glued together in whole or in part in an easy manner so that after folding they are separated.

When a tobacco rod including wrapping paper is prepared, the wrapping paper may be placed at the bottom of the stack.

The seat may be formed by molding the second tobacco filler with a cylindrical plug, such as a mandrel, placed on top of the stack and then removing the plug.

The thickness of the tobacco sheets is not particularly limited, and from the viewpoint of the balance between heat transfer efficiency and strength, it is preferably 150 μm to 1000 μm, more preferably 200 μm to 600 μm. The thickness of the tobacco sheets may be the same or different.

The number of tobacco sheets forming the second tobacco filler is not particularly limited and may be, for example, two, three, four, five, six, or seven.

[0034] 1-3. Third tobacco filler

The third tobacco filler consists of one folded tobacco leaf. The sheet may be a so-called assembled sheet, which has a length comparable to the longitudinal length of the tobacco rod, and is included in the composition in a form that is folded several times parallel to the longitudinal direction of the tobacco rod. From the viewpoint of the balance between heat transfer efficiency and strength, the thickness of the sheet is preferably 150 μm to 1000 μm, more preferably 200 μm to 600 μm.

The sheet base material used for the third tobacco filler may be similar to that used for the second tobacco filler.

[0035] 1-4. Fourth tobacco filler

The fourth tobacco filler consists of tobacco granules.

Examples of raw materials for the fourth tobacco filler include, but are not limited to, (a) ground tobacco material, (b) moisture, (c) at least one pH adjuster selected from the group consisting of potassium carbonate and sodium hydrogen carbonate, and (d ) at least one binder selected from the group consisting of pullulan and hydroxypropyl cellulose.

[0036] The ground tobacco material (component (a)) contained in the fourth tobacco filler includes ground tobacco leaves, ground tobacco sheets, and the like. Types of tobacco include burley tobacco, flue-cured tobacco, and oriental tobacco. The tobacco material is preferably ground to a size of 200 μm - 300 μm.

The mixture of raw materials for the fourth tobacco filler contains ground tobacco material in an amount, as a rule, 20 wt.% - 80 wt.%.

[0037] The moisture (component (b)) contained in the fourth tobacco filler is intended to maintain the integrity of the tobacco granules.

The mixture of raw materials for the fourth tobacco filler contains moisture in the amount of, as a rule, 3 wt.% - 13 wt.%. The fourth tobacco filler may also contain moisture, typically in such an amount that the weight loss on drying is 5 wt.% - 17 wt.%. Drying weight loss refers to the change in weight of a sample before and after drying, the drying being carried out in such a way that a portion of the sample is collected for measurement and the sample is completely dried (e.g. dried at a constant temperature (105°C) for 15 minutes) by evaporation of all moisture in the collected sample. In particular, it refers to the ratio (wt.%) of the sum of the amount of moisture contained in the sample and the amount of the volatile component volatilized under the above drying conditions, to the mass of the sample. That is, the weight loss (mass%) upon drying can be expressed by the following equation.

Loss on drying (wt%)={(weight of sample before complete drying) - (weight of sample after complete drying)} × 100/weight of sample before complete drying

[0038] The pH regulator (component (c)) contained in the fourth tobacco filler consists of potassium carbonate, sodium hydrogen carbonate, or a mixture thereof. The pH adjuster adjusts the pH of the fourth tobacco filler to the alkaline side to promote the release of the smoke flavor component contained in the fourth tobacco filler from the tobacco granules, thereby providing a smoke taste that can be acceptable to the user.

The mixture of raw materials for the fourth tobacco filler may contain a pH adjuster in an amount, as a rule, 5 wt.% - 20 wt.%.

[0039] The binder (component (d)) contained in the fourth tobacco filler binds together the components of the tobacco granules to maintain the integrity of the tobacco granules. The binder consists of pullulan, hydroxypropyl cellulose (HPC) or a mixture thereof.

The mixture of raw materials for the fourth tobacco filler may contain a binder in an amount, as a rule, 0.5 wt.% - 15 wt.%.

[0040] The fourth tobacco filler may consist of the above components (a), (b), (c) and (d), but may additionally contain additional components.

Examples of additional components include an aerosol starting material (component (e)). The aerosol starting material forms aerosol smoke. The aerosol starting material consists of a polyhydric alcohol, and examples of the polyhydric alcohol include glycerol, propylene glycol, sorbitol, xylitol, and erythritol. These polyhydric alcohols may be used alone or in combination of two or more.

When the mixture of raw materials for the fourth tobacco filler includes a raw material for aerosol, it may be contained in an amount of 5 wt.% - 15 wt.%.

Other examples of additional components include (f) a flavoring material (solid or liquid) other than the smoke flavor components. Examples of such flavoring materials include sugar (sucrose, fructose, etc.), cocoa powder, carob powder, coriander powder, licorice powder, orange peel powder, rosehip powder, chamomile flower powder, lemon verbena powder, peppermint powder, leaf powder, spearmint powder, black tea powder and menthol.

The mixture of raw materials for the fourth tobacco filler may contain a flavoring material in an amount, as a rule, 0.5 wt.% - 30 wt.%. The flavoring material may be added to components (a), (b), (c), (d) and (e) by direct mixing with these components, or may be added to these components in such a way that the flavoring material is placed in a known compound - an inclusion carrier, such as a cyclodextrin, to prepare the inclusion compound, which is then kneaded with said components.

When the fourth tobacco filler consists of components (a), (b), (c), (d) and (e), the mixture of raw materials for the fourth tobacco filler may contain component (a) typically in an amount of about 33 wt.% or more (and about 90 wt.% or less).

[0041] The fourth tobacco filler is obtained by mixing components (a), (c) and (d) and optionally components (e) and (f), adding component (b) to the mixture and kneading them, granulating the resulting kneaded of the product with a wet extrusion granulator (to a long columnar shape) and then processing the granules in size to a short columnar or spherical shape. The average particle size (D50) of the resulting tobacco granules is typically 0.2 mm-1.2 mm, preferably 0.2 mm-1.0 mm, more preferably 0.2 mm-0.8 mm.

In extrusion granulation, the kneaded product is preferably extruded under a pressure of 2 kN or more at ambient temperature. As a result of the high pressure extrusion, the temperature of the kneaded product at the outlet of the extrusion granulator rises rapidly, momentarily, from ambient temperature to, for example, 90°C - 100°C, and moisture and volatile components are evaporated by 2 wt.% - 4 wt. .%. Therefore, the water added to prepare the kneaded product can be used in an amount that exceeds the desired amount of moisture in the tobacco beads of the final product by the amount of evaporation.

[0042] Tobacco granules obtained by extrusion granulation can be further dried, if necessary, to control the moisture content. For example, if the weight loss on drying of extrusion granulated tobacco beads as measured is higher than the desired weight loss on drying (e.g., 5 wt% - 17 wt%), the tobacco beads can be further dried to achieve the desired loss on drying. dry mass. The drying conditions (temperature and time) to achieve the desired drying weight loss can be set based on predetermined drying conditions (temperature and time) required to reduce the drying weight loss by a predetermined amount.

[0043] The fourth tobacco filler may consist solely of the above-described tobacco granules, but may additionally contain additional tobacco material. Complementary tobacco material is typically made from milled pieces or finely ground tobacco leaf powder. Additional tobacco material may be used in admixture with tobacco beads according to the present invention.

[0044] The time of adding benzoic acid to the first to fourth tobacco excipients is not specifically limited. The benzoic acid may be added during the manufacture of the tobacco excipients or may be added after the manufacture of the tobacco excipients.

In addition, the method of adding benzoic acid to tobacco excipients is not particularly limited.

For example, an addition method of wrapping the tobacco filler in wrapping paper to form a tobacco rod, then inserting a syringe needle into the center portion of the tobacco rod and injecting the benzoic acid solution into the tobacco filler can be used. According to this addition method, benzoic acid can be evenly added to the entire tobacco filler, since the benzoic acid solution, when injected, passes through the entire tobacco filler.

Alternatively, just before the tobacco filler of the above example is wrapped in wrapping paper, a benzoic acid solution may be applied to the surface of the rod-shaped tobacco filler. According to this addition method, benzoic acid can be added to the surface of the tobacco filler that is in contact with the wrapping paper.

Alternatively, for example, a method can be used which consists in feeding the tobacco material of the tobacco filler into a flavoring machine equipped with a rotating rotor, and then spraying the benzoic acid solution onto the tobacco material simultaneously with rotary agitation to mix them. According to this addition method, benzoic acid can be evenly added to the entire tobacco filler.

In the addition methods described above, not only water but also ethanol, propylene glycol or the like can be used as a solvent for benzoic acid, but from the viewpoint of stable production, it is preferable to use water.

Benzoic acid is insoluble in water at room temperature, but not soluble in warm water. Thus, in order to prevent precipitation of benzoic acid dissolved in warm water, the above addition is preferably carried out in a state where the aqueous benzoic acid solution is heated. The aqueous solution of benzoic acid is preferably heated to a temperature in the range of 75°C to 85°C from the viewpoint of preventing precipitation of the dissolved benzoic acid and preventing water from evaporating.

[0045] 2. Wrapping paper

In the first non-burning heated tobacco product, benzoic acid may be added to the wrapping paper.

The configuration of the wrapping paper is not particularly limited, and may be a commonly used configuration.

[0046] The wrapping paper in the first non-burning heated tobacco product may consist primarily of pulp. The pulp may be made from wood pulp, such as softwood pulp or hardwood pulp, or may be a pulp obtained by blending non-wood pulp commonly used for tobacco wrapping paper, such as flax pulp. , hemp pulp, sisal pulp and esparto pulp.

Examples of types of pulp that can be used include chemical pulp, milled pulp, chemically milled pulp, and thermomechanical pulp obtained by kraft pulp, acid/neutral/alkaline sulfite pulp, chlorine pulp, or the like. .

[0047] By using the above-described pulp, the texture is uniform in a papermaking process using a Fourdrinier paper machine, a cylinder paper machine, a Tanmo compound cylinder paper machine, or the like, thereby producing wrapping paper. If necessary, a wet paper strengthening agent may be added to waterproof the wrapping paper, or a sizing agent may be added to adjust the print condition of the wrapping paper. In addition, internal papermaking additives such as aluminum sulfate, various anionic, cationic, nonionic or amphoteric release enhancers, freeness improvers and paper strengthening agents, as well as papermaking additives such as colorants, pH adjusters, antifoam agents, tar control agents and slime control agents.

[0048] The basis weight of the wrapping paper base paper in the first non-burning heated tobacco product is typically, for example, 20 g/m2 or more, preferably 25 g/m2 or more. On the other hand, the basis weight is generally 65 g/m2 or less, preferably 50 g/m2 or less, more preferably 45 g/m2 or less.

The thickness of the wrapping paper having the above characteristics is not particularly limited, and considering the rigidity, air permeability and ease of control in papermaking, the thickness is generally 10 μm or more, preferably 20 μm or more, more preferably 30 μm or more, and, generally 100 μm or less, preferably 75 μm or less, more preferably 50 μm or less.

The shape of the wrapping paper of the non-burning heated tobacco product may be square or rectangular.

When wrapping paper is used to wrap tobacco filler (to make a tobacco rod), one side may be about 12mm-70mm long and the other side may be 15mm-28mm, preferably 22mm-24mm, more preferably approximately 23 mm. When the tobacco filler is wrapped with wrapping paper in a columnar shape, for example, the end portion of the wrapping paper in the w direction in FIG. 1 and the end portion on the opposite side overlap each other by about 2 mm and are glued together, thereby forming the shape of a columnar paper tube in which the tobacco filler is incorporated. The size of the wrapping paper having a rectangular shape may be determined according to the size of the manufactured tobacco rod.

In the case of wrapping paper for connecting and wrapping the tobacco rod and another element adjacent to the tobacco rod, such as rim paper, the length of one side may be 20 mm - 60 mm, and the length of the other side may be 15 mm - 28 mm.

[0049] In addition to the above-described fibrous mass, the wrapping paper according to an embodiment of the present invention may contain a filler. wt.% or more and 45 wt.% or less.

In the wrapping paper according to an embodiment of the present invention, the filler content is preferably 15 mass% or more and 45 mass% or less in the preferred range of basis weight (25 g/m2 or more and 45 g/m2 or less).

In addition, when the basis weight is 25 g/m2 or more and 35 g/m2 or less, the filler content is preferably 15 mass% or more and 45 mass% or less, and when the basis weight is more than 35 g/m2 and 45 g/m2 or less, the filler content is preferably 25 mass% or more and 45 mass% or less.

As the filler, calcium carbonate, titanium dioxide, kaolin or the like can be used, and from the point of view of improving the brightness and taste of the smoke, for example, it is preferable to use calcium carbonate.

[0050] Various auxiliary agents other than the base paper and filler may be added to the wrapping paper, for example, a water resistance improver may be added to improve water resistance. Examples of water resistance improvers include wet paper strength agents (WS agent) and sizing agents. Examples of wet paper strength agents include urea-formaldehyde resins, melamine-formaldehyde resins, and polyamide epichlorohydrin (PAE). Examples of sizing agents include rosin soap, alkyl ketene dimers (AKD), alkenyl succinic anhydride (ASA), and highly saponified polyvinyl alcohols with a saponification degree of 90% or more.

A paper strengthening agent may be added as an auxiliary agent, and examples include polyacrylamide, cationic starch, oxidized starch, CMC, polyamide epichlorohydrin resins, and polyvinyl alcohols. In particular, oxidized starch is known to improve breathability when used in a very small amount (Japan Unexamined Patent Application Publication No. 2017-218699).

Wrapping paper can be properly coated.

[0051] The coating agent may be added to at least one of the two surfaces, the front surface and the back surface, of the wrapping paper. The coating agent is not particularly limited, and a coating agent capable of forming a film on the paper surface to reduce liquid permeability is preferable. Examples include alginic acid and its salts (e.g. sodium salts), polysaccharides such as pectin, cellulose derivatives such as ethylcellulose, methylcellulose, carboxymethylcellulose and nitrocellulose, and starch and its derivatives (e.g. ether derivatives such as carboxymethyl starch, hydroxyalkyl starch, and cationic starch, as well as ester derivatives such as starch acetate, starch phosphate, and starch octenyl succinate).

[0052] The method of adding benzoic acid to the wrapping paper described above is not particularly limited, but in order to maintain good appearance, benzoic acid is preferably added to the surface of the wrapping paper that comes into contact with the tobacco filler when the tobacco filler is wrapped with the wrapping paper. Benzoic acid may be added to all or part of the surface of the wrapping paper that is in contact with the tobacco filler.

The method of adding benzoic acid to the wrapping paper is not particularly limited, and for example, the above-described heated aqueous benzoic acid solution may be sprayed or applied to the surface of the wrapping paper that is in contact with the tobacco filler.

[0053] 3. Mouthpiece

In the first non-burning heated tobacco product, benzoic acid may be added to the mouthpiece.

The configuration of the mouthpiece is not particularly limited as long as it performs the function of commonly used filters and, for example, cellulose acetate tow processed into a cylindrical shape can be used. The individual yarn fineness and the total fineness of the cellulose acetate tow are not particularly limited, and in the case of a mouthpiece having a circumference of 22 mm, the individual yarn fineness is preferably 5 g/9000 m to 12 g/9000 m, and the total fineness is preferably 12000 g/9000 m - 35000 g/9000 m. The fibers of the cellulose acetate tow may have a Y-shaped cross section or an R-shaped cross section. In the case of a filter filled with cellulose acetate tow, triacetin can be added in an amount of 5 wt.% - 10 wt.% relative to the mass of cellulose acetate tow in order to increase the rigidity of the filter.

Instead of an acetate filter, a paper filter filled with paper pulp can be used.

Air flow resistance adjustment and addition of additives (eg, known absorbents, fragrances, and fragrance retaining materials) can be appropriately provided in the manufacture of the filter.

[0054] The mouthpiece element may consist of a single segment or multiple segments.

When composed of a plurality of segments, the mouthpiece may be composed of a support portion and a filter portion, or may be composed of a cooling portion, a support portion and a filter portion. In any embodiment, it is preferable that the backing part is located closer to the tobacco filler than the filtering part, and benzoic acid is added to the backing part.

When the mouthpiece is composed of a cooling part, a support part, and a filter part, these parts may be arranged as described below.

As shown in FIG. 3, the supporting part 13a, the cooling part 13b, and the filtering part 14 may be arranged in this order. As described above, FIG. 3 shows an embodiment in which the tobacco rod constituting the first non-burning tobacco product 1 is heated from the inside by the heating element 105. In this embodiment, since the mouthpiece 12 is composed of a support part 13a, a cooling part 13b, and a filter part 14 which are arranged in this order, the support portion 13a is not directly heated by the heating element 105, or the direct heating range is narrower than that of the tobacco filler 10.

Alternatively, as shown in FIG. 4, the cooling part 13b, the supporting part 13a, and the filtering part 14 may be arranged in this order. As described above, FIG. 4 shows an embodiment in which the tobacco rod constituting the first non-burning tobacco product 1 is heated from the outside by the heating element 105. In this embodiment, since the mouthpiece 12 is composed of a cooling part 13b, a supporting part 13a, and a filtering part 14 which are arranged in this order, the support portion 13a is not directly heated by the heating element 105, or the direct heating range is narrower than that of the tobacco filler 10.

[0055] As described above, in the first non-burning heated tobacco product, the support portion is positioned so as not to be directly heated by the heating element serving as a heat source, or positioned so that the direct heating range is narrower than that of the tobacco filler. Accordingly, when the first non-burning heated tobacco product is heated, the temperature of the supporting portion becomes lower than the temperature of the tobacco filler. That is, benzoic acid added to the support structure is less likely to be heated to a temperature close to the boiling point of benzoic acid than when added to tobacco filler, and does not volatilize ahead of time. Therefore, the suppression of smoke flavor can be eliminated throughout the entire use of a single non-burning heated tobacco product from the initial stage to the final stage.

Specific examples of the support portion include, but are not limited to, an acetate filter having a hollow portion, i.e. a center channel filter.

[0056] The method of adding benzoic acid to the mouthpiece is not particularly limited. For example, when benzoic acid is added to the support, the heated aqueous benzoic acid solution described above may be sprayed or applied to all or part of the support, or the support may be impregnated with the aqueous benzoic acid. Benzoic acid may be added during the manufacture of the support. For example, when the backing part is made from cellulose acetate fibers, benzoic acid can be added together with a plasticizer (for example, triacetin) or the like added during the manufacturing process of the backing part, and by molding thereafter, a backing structure to which benzoic acid has been previously added can be obtained.

[0057] The configuration of the cooling part is not particularly limited as long as it performs the function of cooling mainstream tobacco smoke, and for example, thick paper processed into a cylindrical shape can be used. In this case, the inside of the cylinder is a cavity, and the vapor containing the aerosol raw material and the tobacco flavor component comes into contact with the air in said cavity for cooling.

The cooling part may be perforated to allow outside air to enter. The presence of such a perforation allows air to flow from the outside into the cooling portion during use, and as a result, the vapor generated by heating the tobacco rod and containing the aerosol raw material and the tobacco flavor component comes into contact with the outside air to cool and liquefy, which promotes the formation of aerosols. . The number of perforations is not particularly limited and may be two or more.

The perforation diameter is preferably 100 μm - 1000 μm, more preferably 300 μm - 800 μm. The perforation is preferably substantially circular or substantially elliptical, and when substantially elliptical, the diameter means the largest diameter.

[0058] 4. Holder for tobacco filler

Each of the second and third non-burning heated tobacco products includes a holder for the tobacco filler.

The configuration of the holder is not particularly limited as long as it performs the function of holding the tobacco filler and, for example, as shown in FIG. 2, a cup-shaped member having a side wall and a bottom plate and open on the opposite side of the bottom plate may be used. The holder may also have a plurality of protrusions (not illustrated) on the surface of the side wall that is in contact with the tobacco filler.

The shape of the bottom plate is not limited and may be, for example, polygonal, rounded polygonal, circular, or elliptical. The width is the diameter when the bottom plate is circular, the largest diameter when the bottom surface is elliptical, and the diameter of the circumscribed circle or the largest diameter of the circumscribed ellipse when the bottom plate is polygonal or circular polygonal. The length orthogonal to the width is the height.

On FIG. 2, the holder is shaped so that the side wall is tapered from the bottom plate to the hole, but other shapes, such as a cylindrical shape, can also be used.

The size of the holder is not particularly limited, and generally the width of the bottom plate is 3mm-10mm, preferably 4mm-8mm, and the height from the bottom plate is 5mm-20mm, preferably 7mm-12mm. The thickness of the side wall is, for example, 0.1 mm to 0.3 mm. The thickness of the bottom plate is preferably greater than the thickness of the side wall and is, for example, 0.3 mm - 1.0 mm, preferably 0.4 mm - 1.0 mm.

[0059] The material of the holder is not particularly limited, and may be a metallic material such as stainless steel, or a material containing a fibrous mass and a binder.

For the manufacture of the holder, when a metallic material is used, the holder may be integrally molded into the desired shape, for example, by plastic processing, and when a material containing fiber and binder is used, the holder may be integrally molded into the desired shape, for example , injection molding or wet forming.

[0060] 5. Aerosol starting material

Each of the first and second non-burning heated tobacco products includes an aerosol starting material in a tobacco filler.

The third non-burning heated tobacco product may further include an aerosol starting material. In this embodiment, the third non-burning heated tobacco product includes a tobacco filler, a tobacco filler holder, and an aerosol starting material, with no aerosol starting material included in the tobacco filler.

The type of starting material for the aerosol is not particularly limited, and extracts from various natural products and/or components thereof can be selected depending on the intended use. Examples of the aerosol starting material include glycerin, propylene glycol, triacetin, 1,3-butanediol, and mixtures thereof.

The aerosol starting material content of the third non-burning heated tobacco product is not particularly limited, and in order to generate sufficient aerosols and provide good smoke taste, it is usually 300 wt% or more, preferably 320 wt% or more, and usually 400 wt%. or less, preferably 375 wt.% or less, relative to the total amount of tobacco filler of the third heated without burning tobacco product.

[0061] <Heated tobacco product>

Heated tobacco products can be classified into products that use electricity to heat tobacco fillers of non-burning heated tobacco products (hereinafter also referred to as "electrically heated tobacco products") and products that use combustible-type heat sources to heat tobacco fillers. non-burning heated tobacco products (hereinafter also referred to as "heated tobacco products using combustible-type heat sources"). Each heated tobacco product will be described in detail below.

[0062] <Electrically heated tobacco product>

The electrically heated tobacco product according to the first embodiment includes: an electrical heating device including a heating element, a battery pack that serves as a power source for the heating element, and a control unit for controlling the heating element; and a first non-burning heated tobacco product configured to be inserted so as to come into contact with the heating element.

Examples of the modes of the electrically heated tobacco product according to the first embodiment include a mode in which heating is performed from inside the tobacco rod of the first non-burning heated tobacco product, as shown in FIG. 3 (hereinafter also referred to as "inner-type electrically heated tobacco product"), and a mode in which the outer peripheral surface of the first non-burning heated tobacco product is heated, as shown in FIG. 4 (hereinafter also referred to as "external-type electrically heated tobacco product").

Hereinafter, the electrically heated tobacco product according to the first embodiment will be described with reference to FIG. 3.

The electrically heated tobacco product 100 (First Embodiment) is used in such a manner that the first non-burning heated tobacco product 1 is inserted to come into contact with the heating element 105 disposed in the electrical heating device 101.

The electric heating device 101 has a battery pack 103 and a control unit 104 inside a housing 102 made of plastic, for example.

When the first non-burning heated tobacco product 1 is inserted into the electric heating device 101, the tobacco rod tobacco filler 10 first comes into contact with the heating element 105, and then the heating element 105 is fully inserted into the tobacco filler 10.

The heating element 23 of the electric heating device 101 generates heat under the control of the control unit 20 . Heat is transferred to the tobacco filler 10 of the first non-burning heated tobacco product 1, whereby the aerosol raw material, the smoke flavor component and the like contained in the tobacco filler 10 is volatilized.

[0063] The heating element 105 of the electrical heating device 101 may be, for example, a sheet-like heater, a plate-like heater, or a tubular heater. The sheet-like heater is a heater in the form of a flexible sheet, and examples thereof include a heater comprising a film (about 20 μm-225 μm thick) of a heat-resistant polymer such as polyimide. The plate-like heater is a heater in the form of a rigid plate (about 200 μm to 500 μm thick), and examples thereof include a heater including a flat substrate having a resistance circuit thereon and using this portion as a heat generating portion. The tubular heater is a heater in the form of a hollow or solid tube, and examples thereof include a heater (about 200 μm to 500 μm thick) including a tube made of metal or the like and having a resistance circuit on its outer peripheral surface, and using this part in as a heat generating part. Alternatively, a columnar heater or a conical heater made of metal or the like, having a resistance circuit in its composition and using this part as a heat generating part, can be used. The cross-sectional shape of the tubular heater may be, for example, round, elliptical, polygonal, or rounded polygonal.

In the case of an internal-type electrically heated tobacco product, as shown in FIG. 3, the plate-like heater, columnar heater, or conical heater described above can be used. In the case of an external-type electrically heated tobacco product, as shown in FIG. 4, the sheet-like heater, the plate-like heater, or the tubular heater described above can be used.

The longitudinal length of the heating element may be in the range of L ± 5.0 mm, where L is the longitudinal length (mm) of the tobacco rod, consisting of tobacco filler and wrapping paper.

[0064] The heating intensity of the heating element, such as the heating time and temperature of the first non-burning heated tobacco product, may be set in advance for each electrically heated tobacco product. For example, the intensity of heating may be set in advance so that after the first non-burning heated tobacco product is inserted into the electric heating device, preheating is performed for a certain period of time until the temperature of at least a portion of the tobacco filler of the first heated tobacco product without combustion of the tobacco product will not reach X (°C), after which the temperature was maintained at a constant temperature of X (°C) or lower.

From the point of view of aerosol delivery, X (°C) is preferably 150°C or higher and 450°C or lower. In particular, X (°C) may be 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, 410°C, 420°C, 430°C, 440°C or 450°C.

In the first embodiment of the electrically heated tobacco product, the vapor generated from the tobacco filler of the first non-burning tobacco product when heated by the heating element and containing the aerosol starting material, the smoke flavor component, and the like, reaches the user's oral cavity through a mouthpiece member composed of a support portion , filter part and the like.

[0065] The electrically heated tobacco product according to the second embodiment includes: an electrical heating device including a heating element, a battery pack that serves as a power source for the heating element, a control unit for controlling the heating element, and a mouthpiece; and a third non-burning heated tobacco product.

Examples of the electrically heated tobacco product according to the second embodiment include the electrically heated tobacco product (second embodiment) as shown in FIG. 6.

Hereinafter, the electrically heated tobacco product according to the second embodiment will be described with reference to FIG. 6.

Fig. 6 is a sectional view of an electrically heated tobacco product 300 (Second Embodiment) which is cut in its longitudinal direction. The electric heating device 301 includes a heating element 305, a battery pack 303, a control unit 304, and a mouthpiece 306, and is structured such that at least a portion of the third non-burning heated tobacco product 2 can be housed in a body 302 of the electric heating device 301.

[0066] The third non-burning heated tobacco product 2 may be positioned to be in contact or not in contact with the heating element 305.

When the third non-burning heated tobacco product 2 is positioned so as to be in contact with the heating element 305, when heated by the heat generated by the heating element 305, a vapor containing an aerosol raw material, a smoke flavor component, and the like is generated from the tobacco filler 10 of the third heated non-flammable tobacco product. burning tobacco product 2.

When the third non-burning heated tobacco product 2 is positioned so as not to come into contact with the heating element 305, the third non-burning heated tobacco product 2 further includes an aerosol starting material (not illustrated). In this case, the aerosol starting material is not included in the tobacco filler 10. When heated by the heat generated by the heating element 305, the aerosol starting material becomes an aerosol smoke, and the aerosol smoke heats the tobacco filler 10, thereby generating a vapor containing a smoke flavor component and similar.

The temperature at which the tobacco filler 10 of the third non-burning heated tobacco product 2 is heated by the electric heating device 301 is lower than 150°C and may be 140°C or lower, 130°C or lower, or 120°C or lower, and usually is 22°C or higher and may be 30°C or higher or 40°C or higher.

If the temperature at which the tobacco filler is heated is within the above range, the benzoic acid in the tobacco filler will not volatilize ahead of time, so that the effect of removing the suppression of smoke flavor suppression due to benzoic acid can be obtained throughout the entire use of a single heated tobacco without burning. product from the initial stage to the final stage.

[0067] <Heated tobacco product using a combustible-type heat source>

The heated tobacco product using a combustible-type heat source according to an embodiment includes: a heating device including a tubular holding member extending from an ignition end to a non-ignition end, and a combustible-type heat source provided at the ignition end; and a second non-burning heated tobacco product disposed in the holding member so as to be closer to the non-igniting end than the combustible-type heat source.

Examples of a heated tobacco product using a combustible-type heat source include a heated tobacco product using a combustible-type heat source as shown in FIG. five.

Hereinafter, a heated tobacco product using a combustible-type heat source will be described with reference to FIG. five.

Fig. 5 is a sectional view of a heated tobacco product 200 using a combustible-type heat source that is cut in its longitudinal direction. The heating device 201 includes a tubular holding member 202 extending from the ignition end to the non-ignition end, and a combustible-type heat source 205 provided on the ignition end side, and has such a structure that the second non-burning heated tobacco product 2 can be disposed. in the holding member 202 so as to be closer to the non-ignition end than the combustible type heat source.

A heat transfer element 203 for a combustible heat source may be provided between the retaining member 202 and the second non-burning tobacco product 2, in which case the heat from the combustible type heat source 205 is conducted to the second non-burning tobacco product 2 also through the heat transfer element 203.

In addition, the filter 204 may be provided on the non-flammable end side of the retaining member 202.

[0068] The combustible-type heat source 205 has a columnar shape extending in the direction from the ignition end to the non-ignition end, as shown in FIG. 5. The combustible-type heat source 205 has a longitudinal cavity 206. The longitudinal cavity 206 extends through the combustible-type heat source 205 in a direction from an ignition end to a non-ignition end. Since the longitudinal cavity 206 passes through the combustible-type heat source 205, the tobacco filler constituting the non-burning heated tobacco product 2 is heated by convective heat transfer. As a result of this heating, a vapor is formed from the tobacco filler, containing an aerosol starting material, a smoke flavor component, and the like.

The longitudinal cavity 206 is preferably provided in its cross section substantially at the center of the combustible type heat source 205.

The combustible-type heat source 205 may be provided on its end surface on the ignition end side with a groove (not illustrated) that communicates with the longitudinal cavity 206. The groove may be open to the side surface of the combustible-type heat source 205. The groove is preferably designed so that the two grooves intersect at right angles on the end surface on the ignition end side. The groove width may be 0.3 mm to 0.8 mm and the groove depth may be about 2.0 mm to 4.0 mm.

The combustible type heat source 205 may have a cylindrical or polygonal columnar shape.

The combustible type heat source 205 is made of a combustible material. The combustible material is, for example, a mixture containing a carbon material, a non-combustible additive, a binder (organic binder or inorganic binder) and water. The carbon material to be used is preferably a material from which volatile impurities have been removed by heat treatment or the like.

The combustible type heat source 205 is partially embedded in the second non-combustion heated tobacco product 2, while the combustible type heat source 205 and the tobacco filler, which are constituents of the second non-combustible heated tobacco product 2, do not touch each other. A binder (e.g., sodium carboxymethyl cellulose) may be applied to a portion of the inner surface of the side wall 16 that is an integral part of the second non-burning tobacco product 2, for example, at one or more points, preferably two points, near the opening, to thereby bind together the combustible-type heat source 205 and the second non-burning heated tobacco product 2. By tying them together, the combustible-type heat source 205 can be prevented from being separated from the second non-burning heated tobacco product 2.

[0069] By heating with a heating device, at least a portion of the tobacco filler is heated at 150° C. or higher in the second non-burning heated tobacco product. From the viewpoint of delivering the aerosol, the heating temperature is preferably 200°C or higher, more preferably 250°C or higher, and usually 400°C or lower.

[0070] <Method for measuring the concentration of benzoic acid in the addition object>

The concentration of benzoic acid added to the object of addition can be measured, for example, using the method described in the source "The Analytical Methods of Food Additives in Food, 2nd edition" published by the Ministry of Health, Labor and Welfare.

Specifically, the benzoic acid contained in the addition object is extracted and purified by steam distillation, and then the concentration of the benzoic acid is quantified by a liquid chromatograph equipped with an ultraviolet absorbtion meter as a detector.

[0071] <Pull Test>

In the electrically heated tobacco products described above, the pull test of the first non-burning heated tobacco product is carried out under the following conditions.

When an internal-type electrically heated tobacco product is used, the temperature of the heater rises to 340°C after the tobacco rod of the first non-burning heated tobacco product is inserted into the electrical heating device. After that, automatic retraction is performed using a single-port automatic retractor manufactured by Borgwaldt under conditions of a flow rate of 55 cc/2 seconds and a puff interval of 30 seconds. The bulk of the smoke generated during the pull test is collected on a Cambridge filter pad and this Cambridge filter pad is removed after at least 14 puffs.

[0072] When an external-type electrically heated tobacco product is used, the temperature of the heater rises to 240°C after the tobacco rod of the first non-burning heated tobacco product is inserted into the electrical heating device. After that, automatic retraction is performed using a single-port automatic retractor manufactured by Borgwaldt under conditions of a flow rate of 55 cc/2 seconds and a puff interval of 30 seconds. The bulk of the smoke generated during the pull test is collected on a Cambridge filter pad, and this Cambridge filter pad is removed after at least eight puffs.

[0073] <Method for Measuring Temperature During Intake Test of Heated Non-Combustion Tobacco Product>

In the electrically heated tobacco products described above, the temperature of the tobacco filler during heating of the first non-burning heated tobacco product is measured using a thermocouple (Model TI-SP-K manufactured by Toa Electric Inc.) inserted into or attached to the desired measurement site of the tobacco product. rod. When the thermocouple is attached, the polyimide tape (50 µm thick) is cut and used.

After the first non-burning heated tobacco product with the inserted or attached thermocouple is inserted into the electric heating device, the change in temperature over time at the desired measurement location is measured and recorded with the temperature of the heater in the above-described <Pull Test>.

EXAMPLES

[0074] The present invention will be described more specifically with reference to the Examples, but the present invention is not limited to the description of the following Examples without departing from the gist.

[0075] <Preparation of non-burning heated tobacco product>

[Production of the first non-burning heated tobacco product]

Two types of first non-burning heated tobacco products have been produced: those used with an electrical heating device of a type that heats from the inside by means of a heating element inserted into the tobacco filler forming an integral part of the tobacco rod (hereinafter also referred to as "non-burning heated tobacco products"). products with internal heating type"), and those used with an electric heating device of the type that heats from the outside with a heating element in contact with the outer peripheral surface of the tobacco rod (hereinafter also referred to as "non-burning heated tobacco products with external heating type ").

[0076] Each of the internally heated non-burning tobacco products was manufactured as follows.

Tobacco sheets were provided pre-containing 20 g/100 g of aerosol starting material (glycerol). Three tobacco sheets were arranged concentrically and folded to form a tobacco filler. The tobacco filler was wrapped with wrapping paper (manufactured by Nippon Paper Papylia Co., Ltd., basis weight: 35 g/m2, thickness: 52 μm) to obtain a tobacco rod. The tobacco filler had a mass of 0.8 g and the tobacco rod had a circumference of 22 mm and a length of 68 mm.

The tobacco rod was cut with a length of 12 mm. A cut tobacco rod, a supporting part consisting of a filter with a central channel having a through channel 8 mm long, a cooling part formed by a paper tube 28 mm long, provided with perforations on its outer peripheral surface, and a filtering part filled with cellulose acetate fibers 7 mm long, hand-wrapped with edging paper.

Thereafter, a syringe needle (Terumo Corporation, Terumo Syringe (registered trademark)) was inserted into the center portion of the tobacco filler, and benzoic acid was added by injecting an aqueous solution of benzoic acid heated to 80°C.

By adding benzoic acid, samples were obtained having benzoic acid concentrations in the tobacco filler of 2500 ppm (Example 1), 5000 ppm (Example 2) and 10,000 ppm (Example 3).

In addition, a sample was prepared without the addition of benzoic acid (Comparative Example 1).

[0076] Each of the externally heated non-burning tobacco products was manufactured as follows.

The shredded tobacco leaf pieces were placed in a flavoring machine equipped with a rotating rotor, and benzoic acid was added by spraying an aqueous solution of benzoic acid heated to 70° C. simultaneously with rotary stirring. The resulting tobacco leaf pieces were mixed with 15 g/100 g of aerosol starting material (glycerin) to obtain a tobacco filler. Using a high-speed winder, tobacco filler was wrapped with wrapping paper (manufactured by Nippon Paper Papylia Co., Ltd., basis weight: 35 g/m2, thickness: 52 μm) to form a tobacco rod. The weight of the pieces per tobacco rod was 0.8 g and the tobacco rod had a circumference of 22 mm and a length of 68 mm.

Thereafter, a syringe needle (Terumo Corporation, Terumo Syringe (registered trademark)) was inserted into the center portion of the tobacco filler, and flavoring agent at 2 g/100 g was added by injection.

The tobacco rod was cut with a length of 20 mm. A cut tobacco rod, a cooling part formed by a paper tube 20 mm long, provided with perforations on its outer peripheral surface, a supporting part consisting of a filter with a central channel having a through channel 8 mm long, and a filtering part filled with cellulose acetate fibers 7 mm long, hand-wrapped with edging paper.

By adding benzoic acid, samples were obtained having concentrations of benzoic acid in the tobacco filler of 2000 ppm (Example 4), 4000 ppm (Example 5) and 6000 ppm (Example 6). In addition, a sample was prepared without the addition of benzoic acid (Comparative Example 2).

In addition, a sample to which methyl benzoate was added instead of benzoic acid (methyl benzoate concentration in tobacco filler: 6000 ppm) (Comparative Example 3) and a sample to which sodium benzoate was added (sodium benzoate concentration in tobacco filler: 6000 ppm) ) (Comparative Example 4).

[0078] [Manufacture of the third heated non-combustion tobacco product]

Each of the third non-burning heated tobacco products was made as follows.

Tobacco granules sieved to an average particle size (D50) of 0.2 mm - 0.7 mm were placed in a flavoring machine equipped with a rotating rotor, and an aqueous solution of benzoic acid heated to 75°C was added by spraying simultaneously with rotary mixing to obtain tobacco filler. The tobacco filler was then loaded into the holder. The mass of tobacco filler per holder was 350 mg. The holder used was a cup-shaped holder consisting of a bottom plate and a side wall and having an opening on the opposite side of the bottom plate. The holder was made by loading a slurry of material containing pulp (bleached softwood kraft pulp (NBKP)) and binder (CMC) into a middle plate, pressing and then drying. In the holder used, the bottom plate was round and had a diameter of 8.85 mm and a thickness of 0.8 mm, and the side wall had a height of 22.9 mm and a thickness of 0.8 mm.

A syringe needle (Terumo Corporation, Terumo Syringe (registered trademark)) capable of radially injecting liquid was inserted through the opening of the holder into the center portion of the tobacco filler, and flavor was added by injection in an amount of 8 g/100 g.

As an aerosol starting material, a mixture of 700 mg of glycerol and 300 mg of propylene glycol was prepared, and this mixture was loaded into a container equipped with a heating element.

A holder loaded with tobacco filler and a container loaded with aerosol starting material were joined together to form a third non-burning heated tobacco product.

By adding benzoic acid, samples were obtained having benzoic acid concentrations in the tobacco filler of 2500 ppm (Example 7), 5000 ppm (Example 8) and 10,000 ppm (Example 9). In addition, a sample was prepared without the addition of benzoic acid (Comparative Example 5).

[0079] <Measurement of the temperature of the object of addition during the pull test of heated non-burning tobacco product>

When using internal type electrically heated tobacco products, a thermocouple (Model TI-SP-K manufactured by Toa Electric Inc.) was inserted into or attached to the following three locations (1) to (3) of the tobacco rod of the first non-burning tobacco product, and the temperature of each measurement site was measured. A polyimide tape (50 µm thick) was cut and used to attach the thermocouple.

(1) The layer of tobacco filler that comes into contact with the heating element

(2) The layer of tobacco filler that comes into contact with the wrapping paper

(3) The surface of the wrapping paper that comes into contact with the tobacco filler

The first non-burning heated tobacco product provided with the above thermocouple was inserted into the electric heating device, and the change in temperature over time at the measurement locations (1) to (3) was measured and recorded in accordance with the described conditions of the above-described pull test. The results are shown in FIG. 7.

[0080] When using external type electrically heated tobacco products, a thermocouple (model TI-SP-K manufactured by Toa Electric Inc.) was inserted into or attached to the following two places (4) and (5) of the tobacco rod of the first heated without burning tobacco product, and measured the temperature of each measuring point. A polyimide tape (50 µm thick) was cut and used to attach the thermocouple.

(4) Center section of tobacco filler

(5) The surface of the tobacco filler that comes into contact with the wrapping paper

The first non-burning heated tobacco product provided with the above thermocouple was inserted into the electric heating device, and the change in temperature over time at the measurement locations (4) and (5) was measured and recorded in accordance with the described conditions of the above-described pull test. The results are shown in FIG. 8.

[0081] <Sensory test during use of heated non-burning tobacco product of internal heating type>

In Examples 1 to 3 and Comparative Example 1, three tasters conducted a sensory test for smoke flavor suppression at the initial stage, intermediate stage and last stage of use of each internal heating type heated without combustion tobacco product.

The first non-burning heated tobacco product was inserted into the electrical heating device and drawing started after the temperature of the heater had risen to 340°C. Puffs from the first to the fourth were defined as the initial stage, puffs from the fifth to the eighth were defined as the intermediate stage, and puffs from the ninth to the twelfth as the last stage.

After drawing in each non-burning heated tobacco product, the three tasters discussed and evaluated according to the following evaluation criteria. The evaluation results are shown in Table 1.

(Criteria for evaluation)

0: Smoke flavor suppression is not felt.

1: Suppression of smoke flavor is felt slightly.

2: Suppression of smoke aroma is felt weakly.

3: Smoke aroma suppression is moderately felt.

4: The suppression of the smoke aroma is felt strongly.

[0082]

[Table 1] Amount of added benzoic acid (ppm) Grade Initial stage (1st - 4th puff) Middle stage (5th - 8th puff) Last stage (9th - 12th puff) Comparative Example 1 0 3 four four Example 1 2500 1 2 3 Example 2 5000 0 1 2 Example 3 10000 0 0 1

[0083] <Sensory test during use of heated non-burning tobacco product of external heating type>

[Eliminating Smoke Aroma Suppression with Benzoic Acid]

For Examples 4-6 and Comparative Example 2, a sensory test for smoke flavor suppression during use of each non-flammable heated external type tobacco product was conducted by six tasters.

The first non-burning heated tobacco product was inserted into the electrical heating device, and drawing was started after a certain period of time from the moment the heater temperature was raised to 240°C. Puffs from the first to the sixth were defined as the initial stage of use, and puffs from the seventh to the twelfth as the last stage of use.

After drawing in each non-burning external heating type tobacco product, six tasters held a discussion and evaluated Examples 4-6 against Comparative Example 2 according to the following criteria. The evaluation results are shown in Table 2.

(Criteria for evaluation)

1: Suppression of smoke flavor is sufficiently eliminated compared with Comparative Example 2.

2: Smoke flavor suppression is eliminated compared to Comparative Example 2.

3: Suppression of smoke flavor is somewhat eliminated compared with Comparative Example 2.

[0084]

[Table 2] Amount of added benzoic acid (ppm) Grade Initial stage (1st - 6th puff) Last stage (7th - 12th puff) Comparative Example 2 0 - - Example 4 2000 3 3 Example 5 4000 1 2 Example 6 6000 1 1

[0085] [Elimination of Smoke Aroma Suppression by Methyl Benzoate and Sodium Benzoate]

For Comparative Examples 3 and 4, a sensory test for the suppression of smoke flavor during use of each non-flammable heated external type tobacco product was conducted by three tasters.

The first non-burning heated tobacco product was inserted into the electrical heating device, and drawing started after a certain period of time from the moment the temperature of the heater was raised to 240°C.

After drawing in each non-burning external heating type tobacco product, the three tasters had a discussion but could not sufficiently evaluate the elimination of smoke flavor suppression for both Comparative Examples 3 and 4 due to the strong chemical odor. Chemical odor refers to a chemical odor, which is an odor unpleasant for humans to inhale.

[0086] <Sensory test during use of the third heated non-burning tobacco product>

For Examples 7-9 and Comparative Example 5, a sensory test for smoke flavor suppression during use of every third non-burning heated tobacco product was conducted by eleven tasters.

The third non-burning heated tobacco product was inserted into the electrical heating device, and drawing was started after a certain period of time from the moment the temperature of the heater was raised to 40°C.

After drawing in every third non-burning heated tobacco product, eleven tasters discussed and evaluated Examples 7-9 against Comparative Example 5 according to the following criteria. The evaluation results are shown in Table 3.

(Criteria for evaluation)

1: Suppression of smoke flavor is sufficiently eliminated compared with Comparative Example 5.

2: Smoke flavor suppression is eliminated compared to Comparative Example 5.

[0087]

[Table 3] Amount of added benzoic acid (ppm) Grade Comparative Example 5 0 - Example 7 2500 2 Example 8 5000 1 Example 9 10000 1

List of designators

[0088] 1 first non-burning heated tobacco product

2 second and third non-burning heated tobacco products

10 tobacco filler

11 wrapping paper

12 mouthpiece

13a supporting part

13b cooling part

14 filter part

15 holder

16 side wall

17 bottom plate

100 electrically heated tobacco product (first embodiment)

101 electrical heating devices

102 building

103 battery pack

104 control unit

105 heating element

200 Heated tobacco product using a combustible-type heat source

201 heating devices

202 holding element

203 thermal element

204 filter

205 combustible type heat source

206 longitudinal cavity

300 electrically heated tobacco product (second embodiment)

301 electrical heating device

302 building

303 battery pack

304 control unit

305 heating element

306 mouthpiece

Claims (39)

1. Heated without combustion tobacco product containing tobacco filler, wrapping paper that wraps the tobacco filler, and a mouthpiece element, wherein in the non-burning heated tobacco product, at least a portion of the tobacco filler is heated at 150°C or higher, the tobacco filler includes an aerosol starting material, benzoic acid is added to at least one of the tobacco filler, wrapping paper, and mouthpiece so that the concentration in the addition object to which benzoic acid is added is 100 ppm. or more and 10000 ppm or less, and benzoic acid is added to the site of the object of addition, which is heated to 150°C or higher and 250°C or lower when the non-burning heated tobacco product is heated. 2. The non-burning heated tobacco product of claim 1 wherein benzoic acid is added to the tobacco excipient. 3. A non-burning heated tobacco product according to claim 1 or 2, wherein the mouthpiece includes at least a backing part and a filtering part, the backing part being located closer to the tobacco filler than the filtering part, and benzoic acid is added to the backing part. 4. Heated without combustion tobacco product according to any one of paragraphs. 1-3, in which the tobacco filler consists of a composition further containing ground tobacco or ground tobacco. 5. Heated without combustion tobacco product according to any one of paragraphs. 1-3, in which the tobacco filler consists of a tobacco leaf. 6. Heated without combustion tobacco product according to any one of paragraphs. 1-3, in which the tobacco filler consists of tobacco granules. 7. Heated without combustion tobacco product according to any one of paragraphs. 1-6, in which benzoic acid is added so that the concentration in the object of addition is 2000 ppm. or more and less than 5000 ppm 8. Heated without combustion tobacco product according to any one of paragraphs. 1-6, in which benzoic acid is added so that the concentration in the object of addition is 5000 ppm. or more and 10000 ppm or less. 9. Tobacco product with electrical heating, containing: an electric heating device including a heating element, a battery pack that serves as a power source for the heating element, and a control unit for controlling the heating element; and non-burning heated tobacco product according to any one of paragraphs. 1-8, wherein the non-burning heated tobacco product is configured to be inserted so as to come into contact with the heating element. 10. Heated without combustion tobacco product containing a tobacco filler and a tobacco filler holder, wherein in the non-burning heated tobacco product, at least a portion of the tobacco filler is heated at 150°C or higher, the tobacco filler comprises an aerosol starting material, benzoic acid is added to the tobacco filler so that the concentration in the tobacco filler is 100 ppm. or more and 10000 ppm or less, and benzoic acid is added to a portion of the tobacco filler that is heated to 150° C. or higher and 250° C. or lower when the non-burning heated tobacco product is heated. 11. The non-burning heated tobacco product of claim 10, wherein the tobacco excipient consists of a composition further comprising ground tobacco or ground tobacco. 12. Heated without combustion tobacco product according to claim 10 or 11, in which the tobacco filler consists of a tobacco leaf. 13. Heated without combustion tobacco product according to claim 10 or 11, in which the tobacco filler consists of tobacco granules. 14. Heated without combustion tobacco product according to any one of paragraphs. 10-13, in which benzoic acid is added so that the concentration in the tobacco filler is 2000 ppm. or more and less than 5000 ppm 15. Heated without combustion tobacco product according to any one of paragraphs. 10-13, in which benzoic acid is added so that the concentration in the tobacco filler is 5000 ppm. or more and 10000 ppm or less. 16. A heated tobacco product that uses a combustible heat source, wherein the heated tobacco product contains: a heating device including a tubular holding member extending from an ignition end to a non-ignition end, and a combustible heat source is provided at the ignition end; and non-burning heated tobacco product according to any one of paragraphs. 10-15, wherein the non-burning heated tobacco product is positioned in the retaining member so as to be closer to the non-igniting end than the combustible heat source. 17. Heated without combustion tobacco product containing tobacco filler and holder for tobacco filler, wherein in the non-burning heated tobacco product, the tobacco filler is heated at a temperature below 150°C, and benzoic acid is added to the tobacco filler so that the concentration in the tobacco filler is 100 ppm. or more and 10000 ppm or less. 18. The non-burning heated tobacco product of claim 17, further comprising an aerosol starting material. 19. The non-burning heated tobacco product of claim 18, wherein the tobacco excipient consists of a composition containing ground tobacco or ground tobacco. 20. The non-burning heated tobacco product of claim 18, wherein the tobacco filler consists of a tobacco leaf. 21. The non-burning heated tobacco product of claim 18, wherein the tobacco excipient consists of tobacco granules. 22. Heated without combustion tobacco product according to any one of paragraphs. 18-21, in which benzoic acid is added such that the concentration in the tobacco filler is 2500 ppm. or more and less than 5000 ppm 23. Heated without combustion tobacco product according to any one of paragraphs. 18-21, in which benzoic acid is added so that the concentration in the tobacco filler is 5000 ppm. or more and 10000 ppm or less. 24. Tobacco product with electric heating, containing: an electrical heating device including a heating element, a battery pack that serves as a power source for the heating element, a control unit for controlling the heating element, and a mouthpiece; and non-burning heated tobacco product according to any one of paragraphs. 18-23.

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