WO2015098447A1 - Method for manufacturing tobacco compact - Google Patents

Abstract

Provided is a method for manufacturing a tobacco compact that comprises a step (A) in which an extruded mixture is produced by extrusion molding of a tobacco mixture comprising a tobacco raw material, a polyol, a binder, and water and a step (B) in which a tobacco compact is produced by drying the extruded mixture. If the total percentage by weight of the tobacco mixture is 100% by weight, the percentage by weight of the polyol is in the range 10-30% by weight. The percentage by weight of the binder is 5% by weight or less and the percentage by weight of water is in the range 20-35% by weight.

Description

Method for producing tobacco molded body

The present invention relates to a method for producing a tobacco molded body.

Conventionally, there has been known a flavor suction device provided with a tobacco molded body using tobacco powder or the like as a tobacco raw material.

This type of flavor suction tool has a tobacco molded body and a holder such as a smoke tube, and is used by mounting the tobacco molded body on the holder. Specifically, the user ignites the tobacco molded body after mounting the tobacco molded body on the holder. And the user can suck | inhale the flavor component discharge | released from the tobacco molded object which burns through a holder.

By the way, various manufacturing methods have been proposed as a method for manufacturing the above-described tobacco molded body (for example, see Patent Documents 1 and 2).

Patent Document 1 discloses a production method for producing a tobacco molded article by extruding a gelatinized mixture containing a tobacco raw material, starch and water, followed by drying by heating. According to the production method disclosed in Patent Document 1, since the water contained in the gelatinized mixture expands by evaporation in the heat drying step, a tobacco molded body having a large number of closed cells is produced. be able to. Since the tobacco molded body manufactured by such a manufacturing method is formed to be porous by a large number of closed cells, ignition can easily ignite the end face (ignition surface) of the tobacco molded body, compared to non-porous one. And the combustion sustainability for reliably burning the entire tobacco molded body are improved.

Patent Document 2 discloses a method for producing a tobacco molded body formed in a hollow cylindrical shape. In such a manufacturing method, a tobacco molded body is manufactured by extruding a mixture containing a tobacco raw material, water, and an organic liquid having a higher volatility than water and then drying by heating. According to such a manufacturing method, since the mixture contains an organic liquid having higher volatility than water, the mixture can be generated more efficiently when generating a porous tobacco molded body having a large number of closed cells.

In recent years, a non-burning type flavor suction device having a carbon heat source, a flavor generation source that releases a tobacco flavor component by a heat flow from the carbon heat source, and a holder that holds the carbon heat source and the flavor generation source has also been proposed. (For example, Patent Document 3).

Patent Document 3 discloses a method for producing a carbon heat source. Specifically, Patent Document 2 discloses a configuration in which a columnar carbon heat source includes an outer wall and a partition wall that partitions a plurality of through holes penetrating in the axial direction inside the outer wall. Since the carbon heat source manufactured by the manufacturing method of Patent Document 2 can be formed thinly with the thickness of the outer wall and the thickness of the partition walls defining the plurality of through holes, it is improved in terms of the ignitability and combustion sustainability of the carbon heat source. It is possible to make it.

However, the above-described conventional technology has the following problems.

Since the tobacco molded body manufactured by the manufacturing method of Patent Literature 1 is formed to be porous by a large number of closed cells, the ignitability at the end face of the tobacco molded body has a certain effect, but a large number of closed cells are It is difficult to make the thickness of the partition walls to be uniform, and the air flow path cannot be made uniform. As a result, there is a large variation in the combustion sustainability for reliably burning the entire tobacco molded body.

Moreover, in the manufacturing method of patent document 2, since a mixture containing an organic liquid having higher volatility than water is extruded and then heated and dried, there is a certain effect for forming a large number of closed cells. However, there is a risk that the outer wall may be deformed during drying by heating. Therefore, in this manufacturing method, it is difficult to reduce the thickness of the outer wall, the air flow path cannot be made uniform, and there is a fear that variation in combustion sustainability becomes large.

Further, the carbon heat source of Patent Document 3 can be formed with a thin thickness that predetermines the thickness of the outer wall and the thickness of the partition wall provided inside the outer wall. Therefore, since an air flow path can be secured, ignitability and combustion sustainability are improved.

However, simply applying such a carbon heat source manufacturing method to a tobacco molded body manufacturing method will include an organic liquid that is more volatile than starch or water in the mixture containing the tobacco raw material. In this step, the outer wall and the partition wall of the tobacco molded body are deformed. Therefore, in the method for producing a tobacco molded body according to the prior art, when a plurality of through holes penetrating in the axial direction is provided inside the tobacco molded body, the thickness of the outer wall or the partition wall is deformed. Sexuality decreases. As a result, with such a production method, it has been difficult to produce a tobacco molded article with improved ignitability and combustion sustainability.

Japanese Patent Publication No. 6-28578 JP-A-57-005682 International Publication No. 2010/146663

A first feature is a method for producing a tobacco molded body for producing a tobacco molded body, wherein an extruded mixture is produced by extruding a tobacco mixture containing a tobacco raw material, a polyol, a binder, and water. Including the step A and the step B of producing the tobacco molded body by drying the extruded mixture, and the total weight percent of the tobacco mixture is 100 weight percent, the weight percent of the polyol is 10 weight percent. % Of the binder, the weight% of the binder is in the range of 5% by weight or less, and the weight% of the water is in the range of 20% to 35% by weight. It is a summary.

The gist of the second feature is that, in the first feature, the apparent density of the tobacco molded body is 1.08 mg / mm ³ or less.

A third feature is the first feature or the second feature, wherein the tobacco molded body is formed in a columnar shape extending in the axial direction, a pair of end faces opposed to the axial direction, and extending in the axial direction. A cylindrical outer wall, and a partition wall that defines a plurality of through holes penetrating between the pair of end surfaces inside the outer wall, and in the transverse direction orthogonal to the axial direction, the thickness of the outer wall is: Within the range of 0.1 to 0.5 mm, the partition wall thickness is within the range of 0.1 to 0.5 mm, and in the cross-section in the transverse direction, due to the plurality of through-holes with respect to the entire cross-sectional area The gist is that the ratio of the opening area is in the range of 30 to 55%.

The gist of the fourth feature is that in any one of the first feature to the third feature, the temperature for drying the extruded mixture in the step B is 40 ° C. or more and less than 100 ° C. .

The fifth feature is summarized as any one of the first to fourth features, wherein the polyol is propylene glycol.

A sixth feature is any one of the first feature to the fifth feature, wherein the tobacco mixture includes an alkali metal salt or an alkaline earth metal salt, and a total weight percent of the tobacco mixture is 100 weight percent. In this case, the weight% of the alkali metal salt or the weight% of the alkaline earth metal salt is within the range of 10 to 30% by weight.

The seventh feature is summarized in that, in the sixth feature, the alkaline earth metal salt is calcium carbonate.

The eighth feature is summarized as any one of the first to seventh features, wherein the binder is carboxymethyl cellulose.

The ninth feature is summarized as any one of the first to eighth features, wherein the tobacco mixture does not contain starch.

The tenth feature is characterized in that, in any of the first to ninth features, the tobacco mixture does not contain carbon.

FIG. 1 is a perspective view of a flavor suction device according to an embodiment. FIG. 2 is a perspective view of the tobacco molded body according to the embodiment. FIG. 3 is a cross-sectional view of the tobacco molded body according to the embodiment. FIG. 4 is a side view of the tobacco molded body according to the embodiment. FIG. 5 is a flowchart showing a method for manufacturing a tobacco molded body according to the embodiment. FIG. 6 is a perspective view showing another form of the flavor suction tool according to the embodiment.

Next, embodiments will be described with reference to the drawings. In the following description of the drawings, the same or similar parts are denoted by the same or similar reference numerals. However, it should be noted that the drawings are schematic and ratios of dimensions and the like are different from actual ones. Accordingly, specific dimensions and the like should be determined in consideration of the following description. Moreover, the part from which the relationship and ratio of a mutual dimension differ also in between drawings may be contained.

[One Embodiment]
Hereinafter, with reference to drawings, the flavor suction tool 1 which concerns on one Embodiment is demonstrated. FIG. 1 is a perspective view of a flavor suction device 1 according to the embodiment. As shown in FIG. 1, the flavor suction device 1 according to the embodiment includes a tobacco molded body 10 including a tobacco raw material and a holder 20.

The tobacco molded body 10 is held by the holder 20. The detailed configuration of the tobacco molded body 10 will be described later.

In the embodiment, as shown in FIG. 1, a case where the holder 20 is a smoke pipe will be described as an example. The configuration of the holder 20 is not limited to the smoke pipe.

The holder 20 has an air flow path 25 inside, and supplies flavor components released by the combustion of the tobacco molded body 10 to the user.

The holder 20 includes a holding part 21 that holds the tobacco molded body 10, a suction part 22, and an intermediate connection part 23 that connects the holding part 21 and the suction part 22.

A hollow portion is formed inside each of the holding portion 21, the intermediate connection portion 23, and the mouthpiece portion 22. When the holding part 21, the intermediate connection part 23, and the mouthpiece part 22 are connected, the hollow portions are connected to form an air flow path 25.

The holding part 21 is composed of a nonflammable member. The mouthpiece part 22 and the intermediate connection part 23 may be comprised by the nonflammable member. Note that the mouthpiece portion 22 and the intermediate connection portion 23 may be configured of a nonflammable member such as a flame retardant member.

The holding part 21 has a pan portion 21a for holding the tobacco molded body 10 at one end, and the tobacco molded body 10 burns while being held by the pan portion 21a.

The flavor component released by the burning of the tobacco molded body 10 is supplied to the user from the mouth portion 22 through the air flow path 25 formed inside the holding portion 21, the intermediate connection portion 23, and the mouth portion 22. Is done.

(Configuration of tobacco molding)
Next, the structure of the tobacco molded body 10 according to the embodiment will be specifically described.

FIG. 2 is a perspective view of the tobacco molded body 10 according to the embodiment. FIG. 3 is a cross-sectional view in the transverse direction D perpendicular to the axial direction L of the tobacco molded body 10. FIG. 4 is a side view of the tobacco molded body 10.

The tobacco molded body 10 according to the embodiment is formed in a column shape extending in the axial direction L along the central axis Ax. The tobacco molded body 10 includes at least a tobacco raw material.

Further, the tobacco molded body 10 penetrates between the pair of end surfaces 10a and 10b inside the outer wall 11 and the pair of end surfaces 10a and 10b facing in the axial direction L, the cylindrical outer wall 11 extending in the axial direction L, and the inside. And a partition wall 12 defining a plurality of through holes 50.

One of the pair of end faces 10 a and 10 b is an ignition surface and the other is inserted into the holder 20.

The outer wall 11 and the partition wall 12 are formed so as to extend along the axial direction L. The outer wall 11 is located on the outermost side in the transverse direction D of the tobacco molded body 10. The outer wall 11 may be divided into a plurality of portions by a groove-like through hole 52 described later in the circumferential direction around the central axis Ax.

The partition wall 12 is located inside the outer wall 11 in the transverse direction D of the tobacco molded body 10. The partition wall 12 is formed in a lattice shape. Further, from the viewpoint of making the thickness of the partition wall 12 uniform, the partition wall 12 is preferably formed as a radial lattice as shown in FIG.

In addition, the form of the lattice of the partition wall 12 is not limited to this. For example, various forms such as a square lattice, a hexagonal lattice, and a triangular lattice can be applied to the lattice form of the partition walls 12.

Moreover, in the cross section of the tobacco molded body 10 in the transverse direction D, the partition wall 12 does not necessarily have to be formed to be a uniform lattice, and includes an unevenly distributed lattice as long as the thickness is within the range described later. It may be shaped like this. Accordingly, the plurality of through holes 50 defined by the plurality of partition walls 12 may also be formed in various shapes in the cross section in the transverse direction D.

In the embodiment, the thickness of the outer wall 11 is in the range of 0.1 to 0.5 mm in the cross section in the transverse direction D perpendicular to the axial direction L. In the transverse direction D perpendicular to the axial direction L, the thickness of the partition wall 12 is in the range of 0.1 to 0.5 mm. The thickness of the outer wall 11 and the thickness of the partition wall 12 described above are the same in the pair of end faces 10a and 10b.

In the embodiment, the case where the thickness of the outer wall 11 and the thickness of the partition wall 12 are the same will be described as an example. Note that the thickness of the outer wall 11 and the thickness of the partition wall 12 may be different as long as they are within the above-mentioned range.

If the thickness of the outer wall 11 and the thickness of the partition wall 12 are smaller than 0.1 mm, it is difficult to mold the outer wall 11 and the partition wall 12. On the other hand, if the thickness of the outer wall 11 and the thickness of the partition wall 12 are larger than 0.5 mm, it becomes difficult to ensure the sustainability of combustion.

In addition, it is more preferable that the lower limit value of the thickness of the outer wall 11 and the thickness of the partition wall 12 is 0.18 or more. The upper limit value of the thickness of the outer wall 11 and the thickness of the partition wall 12 is more preferably 0.28 mm or less.

Further, in the embodiment, the plurality of through holes 50 defined by the plurality of partition walls 12 are the inner through holes 51 formed inside the outer wall 11 and the groove-shaped throughs formed in the outer wall 11 and formed in a groove shape. Hole 52.

The internal through hole 51 is formed by the partition wall 12 or the outer wall 11 and the partition wall 12 being positioned in the periphery in the cross section in the transverse direction D.

The groove-shaped through-hole 52 is formed by the partition wall 12 being located in the periphery in the cross section in the transverse direction D, and opens on the side surface of the outer wall 11.

Note that the groove-like through hole 52 is not necessarily provided. Specifically, in the cross section in the transverse direction D, the outer wall 11 may be formed over the entire circumference without being divided. In this case, the plurality of through holes 50 are constituted by the internal through holes 51.

The diameter D10 of the tobacco molded body 10 in the transverse direction D is preferably in the range of 5 to 15 mm. Further, the length L10 of the tobacco molded body 10 along the axial direction L is preferably in the range of 1 to 40 mm.

In the embodiment, in the cross section in the transverse direction D, the ratio of the opening area by the plurality of through holes 50 to the entire cross-sectional area (hereinafter referred to as the opening ratio) is in the range of 30 to 55%. The plurality of through holes 50 include an internal through hole 51 and a groove-like through hole 52.

Also, the aperture ratio can be calculated based on the following formula.

Opening ratio [%] = (total cross-sectional area-cross-sectional area of outer wall and partition wall) / total cross-sectional area x 100 Equation (1)

The total cross-sectional area can be calculated based on the following equation, with half the diameter D10 as the radius.

Total cross-sectional area = Radius x Radius x π ... Formula (2)

If the opening ratio is less than 30%, it becomes difficult to ensure the combustibility of the tobacco molded body 10, and the ignitability and combustion sustainability are reduced. On the other hand, when the opening ratio is larger than 55%, the amount of flavor components released by the burning of the tobacco molded body 10 is reduced, and it becomes difficult to give the user a taste (tasting) due to the flavor components. Furthermore, if the opening ratio is greater than 55%, the number of puffs during smoking decreases, and the tobacco molded body 10 burns out due to a small number of puffs, so the period for supplying flavor components to the user is shortened. There is a fear.

Further, the lower limit value of the aperture ratio is more preferably 40 or more. Further, the upper limit value of the aperture ratio is more preferably less than 50%.

Moreover, when the weight percent of the tobacco molded body 10 according to the embodiment is 100 weight percent, the weight percent of the tobacco raw material is 60 weight percent or more.

If the amount of the tobacco raw material is less than 60% by weight, the amount of the flavor component released by the burning of the tobacco molded body 10 decreases, and it becomes difficult to give the user a taste (tasting) due to the flavor component.

The apparent density of the tobacco molded body 10 is 1.08 mg / mm ³ or less. This is because if the apparent density of the tobacco molded body 10 is larger than 1.08 mg / mm ³ , the ignitability and the combustion sustainability are lowered.

From the viewpoint of improving ignitability and combustion sustainability, the upper limit of the apparent density of the tobacco molded body 10 is preferably 1.03 mg / mm ³ or less, and preferably 0.97 mg / mm ³ or less. More preferred.

In addition, from the viewpoint of improving ignitability and combustion sustainability, the apparent density of the tobacco molded body 10 is preferably as small as possible.

(Method for producing tobacco molded product)
Next, the manufacturing method of the tobacco molded object 10 which concerns on embodiment is demonstrated. FIG. 5 is a flowchart showing a method for manufacturing the tobacco molded body 10 according to the embodiment.

As shown in FIG. 5, the manufacturing method according to the embodiment includes a mixing step S10, an extrusion step S20, and a drying step S30.

In the mixing step S10, the tobacco raw material, polyol, binder, and water are put into a kneader (kneader) and kneaded to produce a tobacco mixture.

Tobacco raw materials, for example, tobacco raw materials widely used in general tobacco products such as Burley and yellow can be applied. In addition, one of these raw material seeds may be applied to the tobacco raw material, or a mixture of a plurality of them may be applied. Moreover, you may apply tobacco powder to a tobacco raw material.

The amount of tobacco raw material contained in the tobacco mixture is preferably in the range of 30 wt% to 60 wt%.

If the amount of the tobacco raw material is less than 30% by weight, the mixing ratio of the tobacco raw material contained in the tobacco molded body 10 becomes too small after the drying step S30 described later. As a result, when the tobacco molded body 10 is burned (when smoking), the release of flavor components is reduced, and the taste (tasting) of the flavor components may be reduced. When the amount of the tobacco raw material is larger than 60% by weight, the amount of other additives (for example, the amount of polyol) becomes too small. As a result, it is difficult to secure the moldability of the extrusion mixture and the moldability of the tobacco molded body 10 to be described later and to suppress the apparent density of the tobacco molded body 10 and to improve the ignitability and the combustion sustainability. become.

Polyol is mixed into the tobacco mixture as a plasticizer. The polyol is preferably polypropylene glycol (PG). The polyol may be one of polypropylene glycol (PG) and glycol (P), or may contain both. The amount of polyol contained in the tobacco mixture is in the range of 10 wt% to 30 wt%.

When the amount of the polyol is less than 10% by weight, the molding property of the extrusion mixture and the molding property of the tobacco molded body 10 which will be described later are not sufficiently secured, and the apparent density of the tobacco molded body 10 is not sufficiently suppressed, and ignition is performed. It becomes difficult to improve the property and the sustainability of combustion. If the amount of the polyol is larger than 30% by weight, the proportion of the polyol becomes excessively large, and it becomes difficult to ensure the moldability of the extrusion mixture and the tobacco molded body 10 described later. It becomes difficult to improve sustainability.

Furthermore, the lower limit of the amount of such polyol is more preferably 12% by weight or more. The upper limit of the amount of such polyol is more preferably 22% by weight or less.

¡Binder is included to bind tobacco materials. The binder is preferably strong ruboxymethylcellulose (CMC) or a salt thereof. Moreover, it is preferable that a binder is a strong ruboxymethylcellulose sodium salt. The binder may be alginic acid, pectin, carrageenan or guar gum.

The amount of binder contained in the tobacco mixture is in the range of 5% by weight or less. When the amount of the binder is larger than 5% by weight, the amount of the binder is too large, and depending on the flavor component of the tobacco raw material depending on the component released from the binder when the tobacco molded body 10 is burned (when smoking). Taste (taste) may be reduced. In addition, there exists a possibility that the taste (tasting) by a flavor component may fall by the ratio of the compounding quantity of a tobacco raw material decreasing.

Furthermore, the lower limit of the amount of the binder is more preferably 2% by weight or more. The upper limit of the amount of the binder is more preferably 4% by weight or less.

The tobacco mixture may contain an alkali metal salt or an alkaline earth metal salt. When an alkali metal salt or an alkaline earth metal salt is included, the strength of the outer wall 11 and the partition wall 12 of the tobacco molded body 10 can be increased, and the combustion sustainability of the tobacco molded body 10 can be increased. The tobacco mixture does not necessarily include an alkali metal salt and an alkaline earth metal salt. In addition, when an alkaline earth metal salt is included in the tobacco mixture, the alkaline earth metal salt is preferably calcium carbonate.

In addition, when an alkali metal salt (or alkaline earth metal salt) is included in the tobacco mixture, the amount of the alkali metal salt (or alkaline earth metal salt) may be in the range of 10 wt% to 30 wt%. preferable. When the amount of the alkali metal salt (or alkaline earth metal salt) is less than 10% by weight, the effect of increasing the strength of the outer wall 11 and the partition wall 12 and the effect of increasing the combustion sustainability of the tobacco molded body 10 are sufficiently obtained. I can't get it. When the amount of the alkali metal salt (or alkaline earth metal salt) is larger than 30% by weight, the proportion of the tobacco raw material is reduced. As a result, when the tobacco molded body 10 is burned (when smoking), the release of flavor components is reduced, and the taste (tasting) of the flavor components may be reduced.

In the extrusion molding step S20, an extrusion mixture is generated by extruding a tobacco mixture containing a tobacco raw material, a polyol, a binder, and water. Specifically, the tobacco mixture produced in the mixing step S10 is extruded using an extruder (Miyazaki Tekko Co., Ltd., kneading / vacuum extruder FM-P20) to produce an extruded product.

Such an extrudate is formed into a shape having an outer wall 11 and a partition wall 12 like a tobacco molded body 10 shown in FIGS. In the extrusion molding step S <b> 20, an extruded product having an axial length L that is equivalent to that of the tobacco molded product 10 may be generated, or the axial length L may be longer than that of the tobacco molded product 10. Things may be produced as extrudates.

In the extrusion molding step S20, the tobacco mixture may be extruded to produce an extruded product based on the conditions where the extrusion pressure is 3 to 5 MPa and the cooling temperature is about 10 ° C.

In the drying step S30, the tobacco mixture 10 is generated by drying the extruded mixture. Specifically, in the drying step S30, the temperature for drying the extruded mixture is preferably 40 ° C. or higher and lower than 100 ° C.

In the drying step S30, the extrusion mixture may be dried using a constant temperature dryer, or the extrusion mixture may be dried using a vacuum dryer. Further, the period for drying the extruded mixture is not particularly limited as long as the polyol can be removed in addition to the removal of water. For example, the period for drying the extruded mixture may be several hours, several days, or two weeks.

In the drying step S30, an extruded mixture longer than the tobacco molded body 10 may be dried. For example, in the drying step S30, after the extruded mixture having a length corresponding to a plurality of lengths L10 of the tobacco molded body 10 is dried, a continuous body of tobacco molded bodies 10 having the length of the plurality of tobacco molded bodies 10 is obtained. Is generated. And the continuous body of the tobacco molded body 10 may be cut into a desired length in the axial direction L to generate individual tobacco molded bodies 10.

(Function and effect)
The tobacco molded body 10 according to the embodiment includes a pair of end surfaces 10 a and 10 b facing in the axial direction L, a cylindrical outer wall 11 extending in the axial direction L, and a space between the pair of end surfaces 10 a and 10 b inside the outer wall 11. And a partition wall 12 defining a plurality of through holes 50 penetrating therethrough.

In the tobacco molded body 10, the thickness of the outer wall 11 is in the range of 0.1 to 0.5 mm in the cross section in the transverse direction D perpendicular to the axial direction L. In the transverse direction D perpendicular to the axial direction L, the thickness of the partition wall 12 is in the range of 0.1 to 0.5 mm. Further, in the tobacco molded body 10, in the cross section in the transverse direction D, the opening ratio by the plurality of through holes 50 with respect to the entire cross-sectional area is in the range of 30 to 55%. Further, the weight percent of the tobacco raw material is 60% by weight or more, and the apparent density of the tobacco molded body 10 is 1.08 mg / mm ³ or less.

According to such a configuration, since the outer wall 11 and the partition wall 12 are formed in the cross section of the tobacco molded body 10, the combustion area is simply compared to the case where the tobacco molded body 10 in which only the outer wall 11 is thinned is formed. To increase. According to the tobacco molded body 10, the flavor component released from the burning tobacco molded body 10 can be sufficiently secured. That is, it is possible to sufficiently ensure the taste (tasting) by the flavor component given to the user.

Moreover, according to this structure, the ignitability of the tobacco molded body 10 is defined by defining the thickness of the outer wall 11 and the partition wall 12, the weight percent of the tobacco raw material, and the apparent density of the tobacco molded body 10 as described above. In addition, combustion sustainability can be improved.

As described above, according to the tobacco molded body 10 according to the embodiment, it is possible to improve the ignitability and the combustion sustainability while ensuring the taste due to the flavor component given to the user.

Further, in the tobacco molded body 10 according to the embodiment, the plurality of through holes 50 partitioned by the plurality of partition walls 12 open to the inner through hole 51 formed in the outer wall 11 and the outer wall 11, and form a groove shape. And a groove-like through hole 52 to be formed.

In the tobacco molded body 10, since the groove-like through hole 52 that opens to the outer wall 11 and is formed in a groove shape is formed, a corner is formed on the side surface of the outer wall 11. Thereby, it becomes easy to grasp the tobacco molded body 10, and it becomes easy to attach the tobacco molded body 10 to the holder 20. In particular, in the flavor suction tool 1 according to the embodiment, since the user uses the cigarette molded body 10 on the holder 20 many times, the workability when the cigarette molded body 10 is mounted on the holder 20 is improved. Can do.

In the method for producing the tobacco molded body 10 according to the embodiment, an extrusion molding step S20 that generates an extrusion mixture by extruding a tobacco mixture containing a tobacco raw material, a polyol, a binder, and water, and an extrusion mixture. A drying step S30 for producing the tobacco molded body 10 by drying.

In the method for producing the tobacco molded body 10, when the total weight% of the tobacco mixture is 100% by weight, the weight% of the polyol is in the range of 10 to 30% by weight, and the weight% of the binder is 5% by weight or less. And the weight percent of water is in the range of 20 to 35 weight percent.

According to this manufacturing method, the moldability of the outer wall 11 and the partition wall 12 in the tobacco molded body 10 is enhanced. Therefore, according to this manufacturing method, the tobacco molded body 10 with improved ignitability and combustion sustainability can be manufactured.

Here, in the prior art, the tobacco mixture contains an organic liquid and water that easily evaporate from water, or starch and water, and a method of heating and drying the tobacco mixture after extrusion is used. .

The tobacco mixture according to the embodiment contains a polyol instead of an organic liquid that is more easily evaporated than water. Polyol has the property that it is less likely to vaporize than water. Therefore, in the drying step S30, when drying the extruded mixture formed from the tobacco mixture, the removal is sequentially performed in two stages, that is, removal of water from the extruded mixture and removal of polyol from the extruded mixture. Therefore, in the drying step S30, the removal of water secures the shape of the extruded molded body as the tobacco molded body 10 and then the polyol remaining in the extruded molded body is removed. The apparent density of 10 is reduced. Thereby, the ignitability and combustion sustainability of the tobacco molded body 10 are improved. That is, in the manufacturing method according to the embodiment, it is possible to achieve both improvement in moldability of the tobacco molded body 10 and suppression of the apparent density.

Moreover, in the manufacturing method according to the embodiment, it is preferable that the tobacco mixture does not contain starch. According to this manufacturing method, gelatinization of the tobacco mixture can be suppressed by absorbing water by the starch. Thereby, in drying process S30 which drys the extrusion mixture which shape | molded the tobacco mixture, it can suppress that the outer wall 11 and the partition 12 deform | transform by generation | occurrence | production of the independent bubble resulting from water evaporation. That is, according to this manufacturing method, since the thickness of the outer wall 11 and the thickness of the partition wall 12 can be formed thinner, the tobacco molded body 10 with improved ignitability and combustion sustainability can be manufactured.

Moreover, it is preferable that the tobacco mixture does not contain carbon. That is, since carbon is not contained in the tobacco molded body 10, it is possible to suppress a decrease in taste (tasting) due to flavor components released from the burning tobacco molded body 10.

[Example]
In order to clarify the effect of the embodiment, the following evaluation test was performed. The test method and results are shown below.

<Ignition test and combustion sustainability evaluation test>
Comparative Examples 1 and 2 and Examples 1 to 5 were prepared, and an evaluation test was conducted on the ignitability and combustion sustainability of the tobacco molded body.

Each of Comparative Examples 1 and 2 and Examples 1 to 5 was produced as follows.

Comparative Examples 1 to 2 and Examples 1 to 5 were each produced by extruding a tobacco mixture containing a tobacco raw material, a polyol (PG and / or G), a binder (CMC), and water. A corresponding extruded mixture was produced. In addition, except for Example 4, an extruded mixture containing an alkaline earth metal salt (calcium carbonate) was produced.

Also, the extrusion mixture was produced using a mold based on conditions of an extrusion pressure of 3 to 5 MPa and a cooling temperature of about 10 ° C. As the mold, a mold corresponding to the shape of the tobacco molded body corresponding to FIGS. 2 to 4 was used. The diameter in the transverse direction D of the mold is 7.2 mm. Moreover, the open area ratio of the extrusion mixture produced | generated with this metal mold | die is 45.4%.

Table 1 shows the composition of the extrusion mixture corresponding to each of Comparative Examples 1 and 2 and Examples 1 to 5. In addition, the end of the numerical value shown in Table 1 is calculated by rounding off.

Next, the extruded mixture was dried to produce tobacco molded articles corresponding to Comparative Examples 1 and 2 and Examples 1 to 5, respectively.

In addition, the tobacco molding corresponding to each of Comparative Examples 1-2 and Examples 1-5 was dried and produced as follows.

An extrusion mixture corresponding to each of Comparative Examples 1 and 2 and Examples 1 to 5 was placed on a paper waste, and a constant temperature dryer set at 80 ° C. was used for 2 weeks. Continuously dried. Thereafter, in order to harmonize the composition, it was stored for 24 hours in an environment of a temperature of 22 ° C. and a humidity of 60%.

Table 2 shows the compositions of the tobacco molded articles during drying corresponding to Comparative Examples 1 and 2 and Examples 1 to 5, respectively. Table 3 shows the composition of the tobacco molded product from which moisture and PG were completely removed by drying. The end of the numerical values shown in Tables 2 to 3 are calculated by rounding off.

Here, in Table 2, the apparent density is calculated based on the following equation.

Apparent density = (total weight of cigarette molded product-moisture content-residual weight of PG) / (cross-sectional area of outer wall and partition wall x length of tobacco molded product) ... Formula (3)

(Test method)
Next, a tobacco molded product corresponding to each of Comparative Examples 1 and 2 and Examples 1 to 5 is mounted on a separately prepared holder, and the ignition state and the combustion sustained state of the tobacco molded product are determined. Observed.

Specifically, 5 mm of each tobacco molded body was inserted into the tip of a paper tube (no filter) prepared as a holder, and then the end surface of each tobacco molded body was ignited using a heat transfer lighter. Moreover, after ignition, the puff was repeated at a predetermined cycle, and the combustion continuous state was observed.

Specific test conditions are shown below.
<Test conditions>
-Ignition conditions: Ignition with suction capacity 55ml / s-Heating time: 5s / 8s

(Test results)
The test results are shown in Table 4.

Table 4 shows the test results of the tobacco molded products corresponding to Comparative Examples 1 and 2 and Examples 1 to 5, respectively. In addition, the end of the numerical value shown in Table 4 is calculated by rounding off.

In Table 4, the evaluation method of ignitability was evaluated by accepting the whole surface ignition as acceptable. In addition, the combustion sustainability evaluation method evaluated complete combustion as a pass.

As shown in Table 4, it was proved that Examples 1 to 5 were excellent in ignitability and combustion sustainability as compared with Comparative Examples 1 and 2. That is, when the apparent density is 1.08 mg / m ³ or less, it was proved that the ignitability and the combustion sustainability are improved.

[Other Embodiments]
Although the present invention has been described in detail using the above-described embodiments, it is obvious to those skilled in the art that the present invention is not limited to the embodiments described in this specification.

For example, the embodiment can be changed as follows. In the above-described embodiment, the case where the tobacco molded body 10 has a cylindrical shape has been described as an example. However, it is not limited to this.

For example, it may be a polygonal prism shape such as a triangular prism shape, a quadrangular prism shape, a pentagonal prism shape, or a hexagonal prism shape.

Further, in the above-described embodiment, the case where the holder 20 of the flavor suction device 1 is a smoke tube type has been described as an example. However, the holder may be a cylindrical holder 20A like the flavor suction tool 1A shown in FIG. Moreover, the flavor suction tool 1A may further include a filter (not shown) at the end of the holder 20A on the mouthpiece side.

As described above, the present invention can be implemented as modifications and changes without departing from the spirit and scope of the present invention defined by the description of the scope of claims. Therefore, the description of the present specification is for illustrative purposes and does not have any limiting meaning to the present invention.

Note that the entire contents of Japanese Patent Application No. 2013-267240 (filed on Dec. 25, 2013) are incorporated herein by reference.

As described above, according to the present invention, it is possible to produce a tobacco molded body having improved ignitability and combustion sustainability.

Claims (10)

A method for producing a tobacco molded body for producing a tobacco molded body,
Step A for producing an extruded mixture by extruding a tobacco mixture comprising a tobacco raw material, a polyol, a binder, and water;
Producing the tobacco molded body by drying the extruded mixture; and
When the total weight percent of the tobacco mixture is 100 weight percent,
The weight% of the polyol is in the range of 10 wt% or more and 30 wt% or less,
% By weight of the binder is in the range of 5% by weight or less,
The method for producing a tobacco molded body, wherein the weight% of water is in the range of 20 wt% to 35 wt%. The method for producing a tobacco molded body according to claim 1, wherein an apparent density of the tobacco molded body is 1.08 mg / mm ³ or less. The tobacco molded body is formed in a column shape extending in the axial direction,
A pair of end faces facing in the axial direction;
A cylindrical outer wall extending in the axial direction;
A partition wall defining a plurality of through holes penetrating between the pair of end faces inside the outer wall;
In the transverse direction perpendicular to the axial direction, the thickness of the outer wall is in the range of 0.1 to 0.5 mm, and the thickness of the partition wall is in the range of 0.1 to 0.5 mm.
The production of a tobacco molded body according to claim 1 or 2, wherein a ratio of an opening area by the plurality of through holes to a total cross-sectional area in the cross section in the transverse direction is in a range of 30 to 55%. Method. In the said process B, the temperature for drying the said extrusion mixture is 40 degreeC or more and less than 100 degreeC, The manufacturing method of the tobacco molded object as described in any one of Claim 1 thru | or 3 characterized by the above-mentioned. The method for producing a tobacco molded body according to any one of claims 1 to 4, wherein the polyol is propylene glycol. The tobacco mixture includes an alkali metal salt or an alkaline earth metal salt,
The weight percentage of the alkali metal salt or the weight percentage of the alkaline earth metal salt is in the range of 10 to 30% by weight when the total weight percentage of the tobacco mixture is 100% by weight. Item 6. The method for producing a tobacco molded body according to any one of Items 1 to 5. The method for producing a tobacco molded body according to claim 6, wherein the alkaline earth metal salt is calcium carbonate. The method for producing a tobacco molded body according to any one of claims 1 to 7, wherein the binder is carboxymethylcellulose. The method for producing a tobacco molded body according to any one of claims 1 to 8, wherein the tobacco mixture does not contain starch. The method for producing a tobacco molded body according to any one of claims 1 to 9, wherein the tobacco mixture does not contain carbon.

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