TWI605766B - Non-burning type inhaling article - Google Patents

Description

Non-combustion type

The present invention relates to non-combustion type smoking articles.

A burning type of smoking article such as a cigarette is a product in which the cut tobacco and the cut tobacco (hereinafter collectively referred to as a tobacco filler) are burned, and the taste is tasted.

It is known that in addition to such a burning type of smoking article, there is also a non-combustion type smoking article which does not burn a tobacco filler and tastes a fragrance. For example, in Patent Document 1, a soot containing tobacco, a carbonate, and a flavor is used as a tobacco filler, and the flavor of the flavor is dissipated by the action of the carbonate to enhance the taste of the air containing the tobacco flavor component. Further, in Patent Document 2, a heat source is burned and heated by the combustion heat so as not to burn the tobacco filler, and an aerosol containing a tobacco flavor component is generated to absorb the tobacco flavor component.

Since such a non-combustion type absorbent article does not burn the tobacco filler, there is a problem that the tobacco flavor component contained in the tobacco filler is not easily released. In order to release the desired amount of the tobacco flavor component, it is only necessary to increase the filling amount of the tobacco filler, but this causes an increase in cost.

[Previous Technical Literature] [Patent Literature]

[Patent Document 1] International Publication No. 2010/095659

[Patent Document 2] International Publication No. 2006/073065

In order to solve the above problems of the non-combustion type absorbent article, it is an object of the present invention to provide a non-combustion type absorbent article which does not increase the filling amount of the tobacco filler, and which can effectively release the tobacco flavor component from the tobacco filler. .

The present inventors have found that by reducing the density of each tobacco filler, the non-combustion type absorbent article can be effectively released from the tobacco filler by the tobacco filler, and the present invention has been completed.

According to the present invention, there can be provided a non-combustion type absorbent article comprising a tobacco filler having a density of tobacco particles of 0.51 g/cm ³ or less.

According to the present invention, it is possible to provide a non-combustible absorbent article which can effectively release a tobacco flavor component from a tobacco filler.

1‧‧‧Tobacco filler

2‧‧‧Space enclosed by the outer circumference of tobacco filler

3‧‧‧Closed pores present inside the tobacco filler

11‧‧‧ glycerol solution

12‧‧‧Cylinder heater

13‧‧‧Bottomless cylinder

14‧‧‧The formation of cut tobacco

15‧‧‧Cambridge Filter

16‧‧‧smokers

Figure 1 is a diagram for explaining the volume of a tobacco filler.

Figure 2 is a diagram showing the tobacco aroma components released from tobacco filler Diagram of the capture method.

Fig. 3 is a graph showing the relationship between the density of the formed product of cut tobacco and the amount (relative value) of the tobacco flavor component.

Fig. 4 is a graph showing the relationship between the number of times of suction and the amount (relative value) of tobacco flavor components when a low-density cut tobacco molded product is used.

Fig. 5 is a graph showing the relationship between the number of times of suction and the amount (relative value) of tobacco flavor components when ordinary cut tobacco is used.

The invention is described below, but the following description is intended to be illustrative of the invention and not to limit the invention.

In the present specification, "tobacco filler" means each unit constituting all the tobacco fillers contained in the non-combustion type absorbent article. All tobacco fillers contained in non-combustion type smoking articles are referred to as "all tobacco fillers".

As described above, the non-combustion type smoking article has a problem that the tobacco flavor component is not easily released as compared with the combustion type smoking article. In order to solve this problem, the inventors of the present invention have found that the tobacco aroma component present in the vicinity of the surface of the tobacco filler is easily released into the atmosphere, but the tobacco flavor component existing inside the tobacco filler cannot move to the vicinity of the surface. Not released to the atmosphere. Based on this finding, the inventors of the present invention have proceeded to efficiently move the tobacco flavor component remaining inside the tobacco filler to the vicinity of the surface of the tobacco filler, thereby releasing more tobacco flavor components into the atmosphere. As a result, the inventors of the present invention have carefully reviewed and found that by reducing the density of each tobacco filler, the tobacco flavor of the non-combustion type absorbent article can be made into The release efficiency of the fraction is drastically increased, and the present invention has been completed.

Specifically, the non-combustion type absorbent article of the present invention comprises a tobacco filler having a tobacco particle density of 0.51 g/cm ³ or less.

In the present invention, the "tobacco filler" may be any of the formed articles of cut tobacco or cut tobacco. The shape of the cut tobacco is formed by forming the tobacco raw material containing cut tobacco into a predetermined shape. The shaped body of cut tobacco may contain, in addition to shredded tobacco, leaf shavings and tobacco shavings equal to the tobacco shavings produced by the raw material factory and the manufacturing plant. The shape of the cut tobacco may be shaped to absorb the size of the article, or may be cut to a size suitable for absorbing the article after being formed into a large-sized formed article. The shape of the cut tobacco may be in any form, for example, a column, a quadrangular column, preferably a hexahedron, more preferably a rectangular parallelepiped, and more preferably a regular square column. The molded article of cut tobacco may contain, for example, at least one type of binder selected from the group consisting of polytriglucose and hydroxypropylcellulose in order to maintain the shape of the molded article. The binder has an effect of being a binder, and the tobacco flavor component can be contained in a content that does not lower the release property of the tobacco flavor component, and generally may be contained in an amount of 0.5 to 15% by mass based on the total amount of the molded article of the cut tobacco. The amount. Alternatively, the molded article of cut tobacco may not contain a binder even when the shape of the molded article can be maintained without using a binder. When the binder hinders the release of the tobacco aroma component from the tobacco shaped article, it is desirably free of the binder. The shaped body of cut tobacco may contain a moisturizer in order to adjust the amount of moisture. As the humectant, a polyhydric alcohol can be used, and examples thereof include glycerin, propylene glycol, sorbitol, xylitol, and neopentyl alcohol. These polyols may be used alone or in combination of two or more. When a humectant is contained, it is generally contained in an amount of 5 to 15% by mass based on the total amount of the formed body of cut tobacco. And smoke The filament shaped article may further comprise a fragrance material which may be solid or liquid. Examples of the flavoring material include menthol, spearmint, peppermint, cocoa, locust bean, medlar, Lycoris, orange rose hip, chamomile, lemon verbena, sugar (fructose, sucrose, etc.). The aroma material described above may be generally contained in an amount of from 0.5 to 45% by mass based on the total amount of the formed article of cut tobacco.

In the present invention, the tobacco filler has a tobacco particle density of 0.51 g/cm ³ or less, preferably has a tobacco particle density of 0.50 g/cm ³ or less, and more preferably has a tobacco particle density of 0.42 g/cm ³ or less. The lower limit of the tobacco particle density of the tobacco filler may be, for example, 0.05 g/cm ³ , preferably 0.20 g/cm ³ .

Here, "tobacco particle density" means the density of each tobacco filler. "Tobacco particle density" can be calculated in the following manner. First, the size of each tobacco filler was measured using a microscope and the volume was calculated. Moreover, the quality of the tobacco filler is measured by an electronic scale. The density of the tobacco filler was calculated from the obtained volume and mass, and the obtained value was defined as "tobacco particle density". In the present specification, "tobacco particle density" may also be referred to simply as density. Wherein, the volume of the tobacco filler refers to, as shown in Fig. 1, when there is a concave portion on the surface of the tobacco filler 1, it is assumed that a tobacco filler is present in the concave portion, and the outer circumference of the assumed tobacco filler is The size of the space 2. In Fig. 1, reference numeral 3 denotes a closed pore existing in the interior of the tobacco filler. In other words, the volume of the tobacco filler refers to the size of the smallest space in the space defined by the closed curved surface (the closed curved surface formed by the plane and the convex surface) surrounding the tobacco filler. Therefore, tobacco filler The volume includes the volume of the tobacco filler itself (including the volume of the surface protrusion of the tobacco filler), the volume of the closed pores present inside the tobacco filler, and the volume of the surface recess of the tobacco filler. The volume of the tobacco filler can be calculated, for example, by measuring the size of each tobacco filler using an optical microscope (VH-8000, VH-Z75 from Keyence Corporation).

The low density tobacco fillers defined above can be prepared by known methods. For example, the low density cut tobacco defined above can be prepared by an expansion process well known in the art. Further, the low-density cut tobacco molded product defined above can be prepared by a compression forming process which is known in the art for expansion processing or compression molding at a time of compression molding. Since the molded product of the shredded tobacco obtained by reducing the compressive force at the time of compression molding is less likely to lose the tobacco flavor component during preparation than the molded product of the shredded tobacco obtained by the puffing treatment, it is preferable as a tobacco filler. In other methods, the formed product of cut tobacco can be prepared by a rotary flow granulation treatment, a stirring and mixing granulation treatment, an extrusion molding treatment, and the like which are well known in the technical field of the powder industry.

The non-combustion type smoking article of the present invention contains a tobacco filler having a tobacco particle density of 0.51 g/cm ³ or less, preferably 1% by mass or more, based on the total tobacco filler contained in the article. It is preferably 10% by mass or more, and more preferably 20% by mass or more and 100% by mass or less. The higher the blending ratio of the tobacco filler having a tobacco particle density of 0.51 g/cm ³ or less, the more remarkable the effect of the present invention.

The "non-combustion type suction article" in the present invention is an article which absorbs tobacco flavor components by inhalation without burning the tobacco filler. "non-combustible The burnt-type absorbent article may be a non-heated absorbent article that does not heat the tobacco filler and absorbs the tobacco flavor component (for example, refer to International Publication No. 2010/095659). Alternatively, the "non-combustion-type smoking article" may also heat the tobacco-filled material to a level that does not burn and absorbs the tobacco-flavored component. The heating of the tobacco filler can be carried out by circulating air or aerosol heated by a heat source provided in the upstream portion of the tobacco filler to the tobacco filler (for example, refer to International Publication No. 2006/073065), and can also be used with the absorbent article. The separate heating element is carried out by absorbing the outer side warm tobacco filler of the article (see, for example, International Publication No. 2010/110226).

According to the present invention, when a tobacco filler having a density of tobacco particles of 0.51 g/cm ³ or less is applied to a non-combustion type absorbent article, the release efficiency of the tobacco flavor component can be greatly increased. More specifically, in accordance with the present invention, in addition to increasing the amount of tobacco flavor component that is released from the tobacco filler during the initial period of absorption (e.g., 1 to 5 breaths), and may increase when the number of sucking increases (e.g., 6 to 50 breaths are also continued to release the tobacco aroma component. It is believed that the effect is that the void ratio inside the tobacco filler is increased, and the density of the tobacco filler is lowered. Therefore, if the tobacco filler of a normal density is used, the tobacco aroma component which is not released will be At the beginning of the absorption, it was released. Moreover, it is considered that the effect is that the void ratio inside the tobacco filler is increased, and the density of the tobacco filler is lowered, whereby the tobacco flavor component existing inside the tobacco filler becomes easy to move to the surface of the tobacco filler. When the number of suctions increases, it can also continue to move to the surface of the tobacco filler.

As a low density tobacco filler as defined above, A tobacco filler to which carbonate or bicarbonate is added may be used. As the carbonate or hydrogencarbonate, for example, at least one selected from the group consisting of potassium carbonate, sodium carbonate, calcium carbonate, and sodium hydrogencarbonate can be used. Carbonate or bicarbonate may be added in an amount of 5 to 22 parts by mass based on 100 parts by mass of the tobacco filler. The carbonate or bicarbonate may be added to the preparation of the tobacco filler or may be added after the preparation of the tobacco filler. By adding carbonate or bicarbonate to the tobacco filler, non-combustible smoking articles can be expected to provide a better fragrance to the user.

In the present specification, the size of the tobacco filler can be expressed by the equivalent diameter (hereinafter also referred to as particle diameter) of the equivalent surface area of the tobacco filler. The equivalent diameter of the equivalent surface sphere refers to the diameter of a sphere having the same surface area as the surface area of the tobacco filler. In the present invention, the tobacco filler preferably has an equivalent diameter of an equivalent surface area of 1.0 mm or less, more preferably 0.75 mm or less. The lower limit of the equivalent diameter of the ball of the same surface area may be, for example, 0.036 mm, preferably 0.10 mm.

The 50% particle diameter (D50) of all the tobacco fillers contained in the non-combustion type absorbent article of the present invention is preferably 1.0 mm or less, more preferably 0.75 mm or less.

When the size of the tobacco filler is set to be less than or equal to a predetermined size as described above, and the number of all the tobacco fillers contained in the non-combustion type absorbent article is increased, all the tobaccos contained in the non-combustion type absorbent article can be obtained. The total surface area of the filler material is increased, whereby the release amount of the tobacco flavor component of the non-combustion type absorbent article can be increased.

On the other hand, the size of the tobacco filler is determined by the ease of manufacture of the non-combustible absorbent article (for example, the flow of tobacco filler) The nature, the filling method, the practical ventilation resistance of the filled column, etc.) can also be expressed by the longest length of the tobacco filler. In general, the longest length of the tobacco filler is 0.05 mm or more, preferably 0.1 mm or more, more preferably 0.5 mm or more. The maximum length of the tobacco filler is preferably less than the size of the tobacco filler (21 mm) used in the experiment, considering the portability of the non-combustion type absorbent article. The above-mentioned size (the longest length) may be a screen diameter (screen diameter) of a sieve, or may be a size observed by a microscope or the like.

In the present specification, the "surface area of the tobacco filler" means a surface area (hereinafter referred to as a surface area) of the assumed tobacco filler in the case where a concave portion is present on the surface of the tobacco filler, assuming that the tobacco filler is present in the concave portion. In other words, the surface area of the tobacco filler refers to the smallest area of the closed curved surface (the closed curved surface formed by the flat surface and the convex surface) that surrounds the tobacco filler and has no concave surface. This is equivalent to the aforementioned surface area calculated from the equivalent surface area of the equivalent surface area using the sphere surface area.

As a method of measuring the size of the tobacco filler, it is preferable to use an optical microscope (VH-8000, VH-Z75 manufactured by Keyence) or the like, and after confirming the shape, the size of the tobacco filler is measured by a microscope image, and the surface area is calculated. More preferably, the surface area of the tobacco filler can be more accurately measured by using a three-dimensional microscope such as the VR-3000 series of Keyence Corporation. In short, the size of the tobacco filler can be determined using CAMSIZER manufactured by Retsch Technology. The CAMSIZER is a device that measures an image (particle size) by photographing an object with a CCD camera and performing image processing. In short, the size can be screened using a screen to determine the size of the tobacco filler.

A tobacco filler having a cubic shape of 0.5 mm on one side, as defined by the present specification, has a volume of 0.125 mm ³ , a surface area of 1.5 mm ² , and an equivalent surface area of 0.66 mm. Further, the tobacco filler having a square prism shape of 0.5 mm, 0.5 mm, and 0.75 mm on one side has a volume of 0.1875 mm ³ , a surface area of 2.0 mm ² , and a diameter equivalent of 0.71 mm of the equivalent surface area ball as defined in the specification.

According to a preferred aspect, the non-combustion type absorbent article of the present invention comprises a tobacco filler having a density of tobacco particles of 0.51 g/cm ³ or less and to which carbonate or hydrogencarbonate is added. According to a more preferred aspect, the non-combustible absorbent article of the present invention comprises a tobacco filler having a tobacco particle density of 0.50 g/cm ³ or less and to which carbonate or hydrogencarbonate is added. According to still a further preferred aspect, the non-combustion type absorbent article of the present invention comprises a tobacco filler having a tobacco particle density of 0.42 g/cm ³ or less and a carbonate or hydrogencarbonate added thereto.

According to another preferred aspect, the non-combustion type absorbent article of the present invention comprises a shaped article of cut tobacco having a tobacco particle density of 0.51 g/cm ³ or less. According to a more preferred aspect, the non-combustion type absorbent article of the present invention comprises a shaped article of cut tobacco having a tobacco particle density of 0.50 g/cm ³ or less. According to a more preferred aspect, the non-combustion type absorbent article of the present invention comprises a shaped article of tobacco having a density of tobacco particles of 0.42 g/cm ³ or less.

According to another preferred aspect, the non-combustion type absorbent article of the present invention comprises a molded article having a tobacco particle density of 0.51 g/cm ³ or less and a tobacco or bicarbonate-added cut tobacco. According to a more preferred aspect, the non-combustion type absorbent article of the present invention comprises a molded article having a tobacco particle density of 0.50 g/cm ³ or less and a tobacco or bicarbonate-added cut tobacco. According to a preferred aspect, the non-combustion type absorbent article of the present invention comprises a molded article having a tobacco particle density of 0.42 g/cm ³ or less and a carbonate or bicarbonate-added cut tobacco.

According to another preferred aspect, the non-combustion type absorbent article of the present invention comprises a tobacco particle density of 0.51 g/cm ³ or less and an equivalent diameter of an equivalent surface sphere of 1.0 mm or less, preferably 0.75 mm or less. Tobacco filler. According to a preferred aspect, the non-combustion type absorbent article of the present invention comprises tobacco filler having a tobacco particle density of 0.50 g/cm ³ or less and an equivalent diameter of 1.0 mm or less, preferably 0.75 mm or less. material. According to a preferred aspect, the non-combustion type absorbent article of the present invention comprises tobacco filler having a tobacco particle density of 0.42 g/cm ³ or less and an equivalent diameter of 1.0 mm or less, preferably 0.75 mm or less. material.

According to another preferred aspect, the non-combustion type absorbent article of the present invention comprises a tobacco particle having a density of 0.51 g/cm ³ or less and an equivalent diameter of an equivalent surface sphere of 1.0 mm or less, preferably 0.75 mm or less. A tobacco filler material with carbonate or bicarbonate is added. According to a preferred aspect, the non-combustion type absorbent article of the present invention comprises a tobacco particle having a density of 0.50 g/cm ³ or less and an equivalent diameter of 1.0 mm or less, preferably 0.75 mm or less, and is added. Tobacco filler with carbonate or bicarbonate. According to a preferred aspect, the non-combustion type absorbent article of the present invention comprises a tobacco particle having a density of 0.42 g/cm ³ or less and an equivalent diameter of 1.0 mm or less, preferably 0.75 mm or less, and is added. Tobacco filler with carbonate or bicarbonate.

According to another preferred aspect, the non-combustion type absorbent article of the present invention comprises a tobacco particle density of 0.51 g/cm ³ or less and an equivalent diameter of an equivalent surface sphere of 1.0 mm or less, preferably 0.75 mm or less. The shape of cut tobacco. According to a preferred aspect, the non-combustion type absorbent article of the present invention comprises tobacco having a tobacco particle density of 0.50 g/cm ³ or less and an equivalent diameter of 1.0 mm or less, preferably 0.75 mm or less. Shaped product. According to a more preferred aspect, the non-combustible absorbent article of the present invention comprises tobacco having a density of tobacco particles of 0.42 g/cm ³ or less and a diameter equivalent to a diameter of 1.0 mm or less, preferably 0.75 mm or less. Shaped product.

According to another preferred aspect, the non-combustion type absorbent article of the present invention comprises a tobacco particle having a density of 0.51 g/cm ³ or less and an equivalent diameter of an equivalent surface sphere of 1.0 mm or less, preferably 0.75 mm or less. A shaped product of tobacco or bicarbonate shredded tobacco is added. According to a preferred aspect, the non-combustion type absorbent article of the present invention comprises a tobacco particle density of 0.50 g/cm ³ or less and an equivalent surface area equivalent diameter of 1.0 mm or less, preferably 0.75 mm or less, and is added A shaped body of tobacco or bicarbonate shredded tobacco. According to a preferred aspect, the non-combustion type absorbent article of the present invention comprises a tobacco particle density of 0.42 g/cm ³ or less and an equivalent surface area ball diameter of 1.0 mm or less, preferably 0.75 mm or less, and is added A shaped body of tobacco or bicarbonate shredded tobacco.

(Example) example 1: (1) Modification of the shape of cut tobacco

The tobacco of the Burley species was pulverized by a grinder and sieved with a mesh of 0.5 mm to prepare a tobacco powder having a size of less than 0.5 mm.

Tobacco powder, water, and potassium carbonate were separately mixed with 10 g, 0.94 g, and 2.2 g, and the resulting mixture was placed in a cylindrical vessel and spun and mixed overnight (12 hours) to homogenize.

150 mg of the above-mentioned homogenized mixture was placed in an empty metal cylinder (inner diameter: 21 mm), and the upper portion of the metal cylinder was compression-molded by a piston, whereby a molded product of shredded tobacco was obtained. The compressive force at the time of molding is 1 MPa, 2 MPa, 4 MPa, 6 MPa or 8 MPa. The "tobacco particle density" of the molded article of cut tobacco is measured by the volume, mass, and mass of the molded product of the cut tobacco obtained by compression molding.

When 1MPa to compression molding, the resulting molded product (Sample No.1) system having 1.67mm in height, diameter, quality of 150mg of 21.0mm, the volume of 578mm ^3, 803mm surface area of ^2, 0.259mg / mm ³ of Tobacco particle density. When the compression molding was carried out at a compression force of 2 MPa, the obtained molded product (sample No. 2) had a height of 1.03 mm, a diameter of 21.0 mm, a mass of 150 mg, a volume of 357 mm ³ , a surface area of 761 mm ^{2 , and} a surface area of 0.420 mg / Tobacco particle density of mm ³ . When compression molding was performed at a compression force of 4 MPa, the obtained molded product (sample No. 3) had a height of 0.86 mm, a diameter of 21.0 mm, a mass of 150 mg, a volume of 298 mm ³ , a surface area of 749 mm ² , and a volume of 0.504 mg/mm. ³ tobacco particle density. When compression molding was performed at a compression force of 6 MPa, the obtained molded product (sample No. 4) had a height of 0.84 mm, a diameter of 21.0 mm, a mass of 150 mg, a volume of 291 mm ³ , a surface area of 748 mm ^{2 , and} a surface area of 0.516 mg/mm. ³ tobacco particle density. When compression molding was performed at a compression force of 8 MPa, the obtained molded product (sample No. 5) had a height of 0.67 mm, a diameter of 21.0 mm, a mass of 150 mg, a volume of 232 mm ³ , a surface area of 737 mm ^{2 , and} a surface area of 0.646 mg/mm. ³ tobacco particle density.

The equivalent diameter of the equivalent surface area of the sample No. 1 to No. 5 was 16.0 mm, 15.6 mm, 15.4 mm, 15.4 mm, and 15.3 mm in accordance with the order of the sample having a low density of the molded product.

(2) Capture of tobacco aroma components released from the shape of cut tobacco

The tobacco flavor component released from the molded article of cut tobacco is collected as described below. The method of trapping tobacco flavor components will be described with reference to Fig. 2 .

In the hollow bottomless cylindrical body 13 (inner diameter: about 21 mm), the formed product 14 of the obtained shredded tobacco (any of the sample Nos. 1 to 5) is placed in a circle arranged upstream thereof. Inside the cylindrical heater 12 (ceramic cylindrical heater, inner diameter 2 mm, length 30 mm, heating temperature 250 ° C), a glycerin solution 11 was injected upstream (2 μL per suction). When the cigarette lighter 16 disposed downstream of the bottomless cylindrical body 13 in which the cut fabric 14 containing the cut tobacco is placed is sucked (55 cc is sucked by a rectangular wave for 2 seconds), a glycerin aerosol is generated. The glycerin aerosol is allowed to flow inside the bottomless cylindrical body 13 in which the cut product 14 containing the shredded tobacco is stored. A glycerin aerosol produced on the downstream side of the bottomless cylindrical body 13 of the formed product 14 containing the shredded tobacco is collected by a Cambridge Filter 15. Contained in the captured glycerol aerosol A tobacco aroma component released from the shaped article 14 of cut tobacco. The Cambridge filter was replaced every 5 times, and a total of glycerol aerosols up to 50 times were collected. Continuously sucking and sucking.

(3) Analysis of the aroma components of tobacco collected

The tobacco aroma components contained in the captured glycerol aerosol were quantitatively analyzed by gas chromatography chart (using an FID detector). From the standpoint of easy measurement, this experiment selects nicotine as the tobacco flavor component of the analysis object.

In this experiment, the amount of tobacco flavor component collected was measured by circulating a glycerin aerosol in the molded body of cut tobacco, but only the atmosphere (air) was formed into the cut tobacco without using a glycerin aerosol. It can also be used to collect tobacco aroma components. However, when only the atmosphere (air) is distributed in the molded body of the shredded tobacco, the amount of the tobacco flavor component collected is lower than when the aerosol is passed. Therefore, in this experiment, in order to make the amount of the tobacco flavor component collected easily, the glycerin aerosol was circulated in the molded body of the cut tobacco. Further, the liquid for generating an aerosol is propylene glycol or the like in addition to glycerin, and the chemical composition of the aerosol flowing through the molded product of the shredded tobacco is not limited to glycerin or propylene glycol.

(4) Results

The amount (relative value) of the tobacco aroma component (here, nicotine) captured in the recovered Cambridge filter is shown in Figures 3 and 4.

Fig. 3 is a graph showing the relationship between the density of the formed product of cut tobacco and the amount (relative value) of the tobacco flavor component. In Fig. 3, the "amount of tobacco flavor component (relative value)" is the amount of tobacco flavor component (b) obtained by each sample (sample No. 1 to No. 5). The ratio (b/a) of the amount (a) of the tobacco flavor component obtained in .4 is expressed as "b), and the "amount of tobacco flavor component" indicates the total amount of tobacco flavor components collected up to 50 times of suction. Mg) The value obtained by dividing the surface area (mm ² ) of the cut product of the cut tobacco and the number of times of sucking (50 times) (mg/(puff ‧ mm ² )).

Fig. 3 is a view showing the tobacco flavor component released from the molded article of cut tobacco when the tobacco particle density of the cut tobacco product is reduced to 0.504 mg/mm ³ or less (that is, 0.504 g/cm ³ or less). The amount will increase. Further, Fig. 3 is a view showing the tobacco flavor released from the molded product of cut tobacco when the density of the tobacco particles of the molded article of cut tobacco is lowered to 0.420 mg/mm ³ or less (that is, 0.420 g/cm ³ or less). The amount of ingredients will increase significantly. As a result, it is considered that the void ratio inside the molded product of the shredded tobacco is increased, and the density of the formed product of the shredded tobacco is lowered, whereby the tobacco flavor component (for example, nicotine) existing inside the molded product of the shredded tobacco can be easily moved to The surface of the formed article and the amount of tobacco flavor component released from the surface of the molded article are increased.

Fig. 4 is a view showing how the amount of the tobacco flavor component released from the molded article of cut tobacco changes in accordance with the number of times of sucking. In Fig. 4, the amount (relative value) of the tobacco aroma component is the amount of the tobacco aroma component captured by the Cambridge filter recovered after each suction (b) and the Cambridge filter recovered after 5 times of the suction. The ratio (b/a) of the amount (a) of the tobacco aroma components to be trapped is expressed.

In Fig. 4, the symbol of the white diamond indicates the result of the molded product of the tobacco having a density of tobacco particles of 0.259 mg/mm ³ , and the symbol of the black square indicates the molded product of the tobacco having a density of tobacco of 0.420 mg/mm ³ . As a result, the mark of the white triangle indicates the result of the molded product of cut tobacco having a tobacco particle density of 0.504 mg/mm ³ .

In each of the above three samples (that is, the low-density cut tobacco molded product), the amount of the tobacco flavor component indicates a value of about 0.8 to about 1.0 at the time of continuous inhalation of 20 times, and the continuous aspiration is performed. The time point of 50 times represents a value of about 0.6 to about 0.7. In Example 2 (Fig. 5) to be described later, the same experiment was carried out using cut tobacco having a normal density (cut tobacco which was not subjected to expansion treatment). The tobacco having the usual density is at a time point of continuous inhalation of 20 times, and the amount of the tobacco aroma component is reduced to about 0.4.

These results show that if the tobacco particle density of the cut tobacco molded product is reduced to 0.504 mg/mm ³ or less (that is, 0.504 g/cm ³ or less), even if the number of times of suction is increased, the suction can be stably maintained. The amount of tobacco aroma components. It is recognized that the result is that the density of the molded product of the cut tobacco is lowered by increasing the void ratio inside the molded product of the cut tobacco, whereby the tobacco flavor component (for example, nicotine) existing inside the molded article of the cut tobacco becomes easy. The movement to the surface of the molded article can be continued to move to the surface of the molded article even after the number of times of sucking and absorbing is accumulated.

In this experiment, nicotine was selected as the measurement target of the tobacco flavor component, but the tobacco flavor component other than nicotine can also increase the release amount of the surface of the molded article by lowering the density of the shaped tobacco. .

Example 2: (1) Method

The cut tobacco shreds were removed using shredded tobacco (smoked tobacco without expansion treatment), and the tobacco aroma components released from the shredded tobacco were collected in the same manner as in Example 1 (refer to Fig. 2), and the trapped tobacco aroma components were analyzed. .

In the present experiment, the shredded tobacco of 0.5 to 1.18 mm obtained by pulverizing the tobacco of the Bailey species in a grinder and then sieving it with two kinds of sieves having a mesh size of 0.5 mm and 1.18 mm was used. In this experiment, potassium carbonate was added to the cut tobacco in the same manner as in the case of the cut product of cut tobacco. Specifically, 0.94 g of pure water and 2.2 g of potassium carbonate powder were mixed with respect to 10 g of shredded tobacco, and the resulting mixture was placed in a cylindrical container, and subjected to one-night (12 hours) rotational mixing (80 rotations/min) to homogenize. . Further, a bottomless cylindrical body (inner diameter of about 21 mm) in which a tobacco-containing molded product is placed is replaced with a bottomless cylindrical body (inner diameter: 8 mm) filled with shredded tobacco (containing potassium carbonate (150 mg)) (symbol 3 of Fig. 2) ). At this time, in order to prevent the shredded tobacco from moving from a predetermined position in the bottomless cylindrical body, a non-woven fabric is attached to both the entrance and exit portions of the bottomless cylindrical body. Moreover, the Cambridge filter was replaced every 5 times, and the glycerol aerosol was collected for a total of 20 times. The nicotine contained in the captured glycerol aerosol was quantified using a gas chromatogram (detector system using FID).

(2) Results

The amount of tobacco aroma component (here nicotine) captured in the recovered Cambridge filter is shown in Figure 5. Figure 5 shows that there is a pass The amount of tobacco aroma components released from the shreds of constant density varies according to the number of times of suction. In Fig. 5, the amount of tobacco flavor component (relative value) is the amount of tobacco flavor component (b) captured by the Cambridge filter recovered after each sucking, and the Cambridge filter recovered after 5 times of sucking. The ratio (b/a) of the amount (a) of the tobacco flavor component captured by the device is expressed.

In Fig. 5, "continuous suction and discharge" means the amount of tobacco flavor component when the suction is continuously performed 20 times, and "sucking at intervals of 1 day" means that the first time the suction is performed 5 times, and the next time the suction is performed 5 times ( In total, the amount of tobacco aroma components was increased by the amount of the tobacco aroma, and the amount of the tobacco aroma was 5 times (the total of 15 times).

When the inhalation is continuously performed 20 times, the amount of the tobacco flavor component is drastically lowered as the number of times of suction is increased, and the amount of tobacco aspirate is lowered to about 0.4 after 20 times of suction. After 20 times of inhalation, when the nicotine content in the cut tobacco was measured, the nicotine content in the cut tobacco was almost no decrease compared with the nicotine content in the cut tobacco before continuous sucking. From this point of view, when the suction is continuously performed, the tobacco aroma component present on the surface of the tobacco is released from the surface of the tobacco, and the tobacco flavor component existing inside the tobacco does not move to the surface of the tobacco and stays inside.

On the other hand, when suction is performed on the first day of the interval, it is difficult to reduce the amount of the tobacco flavor component as the number of times of suction is increased as compared with the case of continuous suction. It is noted that the tobacco aroma component present in the tobacco shreds will move to the surface of the shredded tobacco during the period in which no smoking is carried out, and the tobacco aroma component is supplied to the surface of the shredded tobacco.

From these results, it can be seen that the shredded tobacco has a normal density. At the time, the rate of movement of the tobacco flavor component present inside the cut tobacco to the surface of the tobacco was slower than that of the low-density cut tobacco product (Example 1).

It can be seen from the results of Fig. 5 that the release of the tobacco aroma component is mainly based on the release of the surface of the tobacco filler, whereby the following formula can be derived: N _T = N ₀ S _LT

N _T : total release of tobacco aroma components per 1 breath (mg/puff)

N ₀ : release amount of tobacco aroma components per unit surface area per unit of suction and per unit area (mg/(puff‧mm ² ))

S _LT : total surface area (mm ² ) of all tobacco fillers.

From this formula, in order to increase the total amount of release (N _T ) of the tobacco flavor component, the total surface area (S _LT ) of the entire tobacco filler or the tobacco flavor component per unit surface area per unit surface area is obtained. The release amount (N ₀ ) can be increased.

The method of increasing the total surface area (S _LT ) of the entire tobacco filler may be exemplified by increasing the size of the tobacco filler, increasing the number of tobacco fillers, or changing the shape of the tobacco filler by increasing the surface area (eg, a sheet). ()). In order to increase the total surface area (S _LT ) without increasing the amount of tobacco filler used, it is possible to increase the number of tobacco fillers by reducing the size of the tobacco filler or to change the shape of the tobacco filler by increasing the surface area. .

Further, from the above experimental results, the method of increasing the amount of release (N ₀ ) of the tobacco flavor component per unit surface area per unit surface area is to reduce the density of the tobacco filler.

From the above, the density of the tobacco filler is lowered, whereby the smoke released by the tobacco filler can be obtained when sucking the non-combustion type absorbent article The amount of the grass aroma component is increased, whereby the amount of the tobacco filler used in the non-combustion type absorbent article can be reduced, and the use cost of the tobacco filler can be reduced. Moreover, in addition to reducing the density of the tobacco filler, reducing the size of the tobacco filler to increase the number of tobacco fillers, or changing the shape of the tobacco filler to increase the surface area, it is also effective in reducing the cost of use of the tobacco filler.

11‧‧‧ glycerol solution

12‧‧‧Cylinder heater

13‧‧‧Bottomless cylinder

14‧‧‧The formation of cut tobacco

15‧‧‧Cambridge Filter

16‧‧‧smokers

Claims (10)

A non-combustion type smoking article comprising a tobacco filler having a density of tobacco particles of 0.51 g/cm ³ or less selected from a molded article of cut tobacco and cut tobacco. The non-combustion type smoking article according to claim 1, wherein the tobacco filler is a tobacco filler in which a carbonate or a hydrogencarbonate is added. The non-combustion type absorbent article according to claim 1, wherein the tobacco filler has a tobacco particle density of 0.42 g/cm ³ or less. The non-combustion type absorbent article according to claim 2, wherein the tobacco filler has a tobacco particle density of 0.42 g/cm ³ or less. The non-combustion type absorbent article according to claim 1, wherein the tobacco filler is a molded product of cut tobacco. The non-combustion type smoking article according to claim 2, wherein the tobacco filler is a molded product of cut tobacco. The non-combustion type absorbent article according to claim 3, wherein the tobacco filler is a molded product of cut tobacco. The non-combustion type absorbent article according to claim 4, wherein the tobacco filler is a molded product of cut tobacco. The non-combustion type absorbent article according to any one of claims 1 to 8, wherein the tobacco filler has a diameter equivalent to a ball of an equivalent surface area of 1.0 mm or less. The non-combustion type absorbent article according to any one of claims 1 to 8, wherein the tobacco filler has an equivalent diameter of an equivalent surface area of 0.75 mm or less.