WO2013042609A1

WO2013042609A1 - Cigarette

Info

Publication number: WO2013042609A1
Application number: PCT/JP2012/073473
Authority: WO
Inventors: 古賀　和弘; 敏隆梅津
Original assignee: 日本たばこ産業株式会社
Priority date: 2011-09-20
Filing date: 2012-09-13
Publication date: 2013-03-28
Also published as: JP2014230489A

Abstract

Provided is a cigarette which is: equipped with a tobacco rod including a tobacco filler and a tobacco rolling paper for wrapping around the tobacco filler, a filter including a filter member and a wrapping paper for wrapping around the filter member, and a tip paper bonded on to the tobacco rod and the filter so as to connect same; and formed such that through-holes for allowing the inflow of air during inhaling pass through the tip paper of the filter part and the wrapping paper. The cigarette is characterized in that the diameter thereof is 3.0-6.0mm, the percentage of the amount of air inflowing from the through-holes in the tip paper in the total amount of air drawn out from the cigarette mouthpiece is in the range of 10-60%, and the filter member includes an acetate tow having a filament denier of more than 8.0g/9000m and a total denier of 15000g/9000m.

Description

cigarette

The present invention relates to a cigarette of a narrow winding size.

For example, a cigarette having a diameter of 5.4 mm called “super slim” is commercially available as a thin-rolled cigarette. A cigarette called “micro slim” which is thinner than this is also known. Such a thin-rolled cigarette has a particular problem due to its thinness. That is, a cigarette having a thin winding size tends to increase the ventilation resistance of the cigarette due to its thinness. The cigarette ventilation resistance correlates with the smoker's ease of sucking, and cigarettes with too high ventilation resistance are difficult to absorb, and it is generally said that the cigarette ventilation resistance is desirably 80 to 150 mmH ₂ O.

In order to design a cigarette with the desired low cigarette ventilation resistance,
(1) Lower the ventilation resistance of the filter,
(2) reducing the ventilation resistance of the tobacco rod, and
(3) Generally, increasing the air inflow amount (Qf) from the through hole of the chip paper to reduce the air inflow amount (Qt) from the cigarette tip. The ventilation resistance of the filter can be lowered by changing the production conditions of the filter production machine to reduce the amount of acetate tow filled in the filter rod. There is a limit to reducing the amount of tow filling. In particular, in a thin cigarette having a diameter of 6.0 mm or less, it is difficult to suppress the increase in ventilation resistance due to the thinness only by reducing the filling amount of acetate tow. Similarly, there is a limit to reducing the airflow resistance by reducing the amount of tobacco filler filling the tobacco rod. Therefore, in order to reduce the cigarette ventilation resistance, the air inflow amount (Qf) from the through hole of the chip paper is increased to reduce the air inflow amount (Qt) from the tip of the cigarette. The amount of air supplied to the chopped combustion is reduced and the amount of tar produced by the combustion is reduced.

For this reason, it has been difficult to achieve both a desired low cigarette ventilation resistance and a high tar amount in a thin-winding cigarette whose cigarette ventilation resistance tends to increase. In fact, commercially available cigarettes with a diameter of 5.4 mm increase the air inflow (Qf) from the through hole of the chip paper in order to achieve the desired low cigarette ventilation resistance, and the tar amount is generally 1-8 mg. The amount of tar is lower than that of conventional cigarettes of about 1 to 20 mg. For example, Patent Document 1 discloses a cigarette having a tar amount of 1 mg or less and a thin roll size (diameter 5 to 7 mm) provided with a dual segment filter. In fact, the present inventors analyzed several marketed products with a narrow winding size, but could not confirm cigarettes whose cigarette ventilation resistance was 150 mmH ₂ O or less and whose tar value in mainstream smoke was 8 mg or more. .

In addition, when the charcoal filter is used in a cigarette, the activated carbon particles dispersed in acetate tow act as a factor that increases the ventilation resistance of the filter according to the amount added, so the filter ventilation resistance compared to a filter consisting only of acetate tow Rises. Similarly, when an adsorbent other than activated carbon or a fragrance capsule is added to the filter, the ventilation resistance of the filter increases. In addition, based on ISO standard smoking conditions (ISO3308, ISO3402), it is not related to the size of the cigarette for 1 smoke absorption in 2 seconds. The flow rate through the filter is fast and a large amount of activated carbon is required. For this reason, when a charcoal filter is adopted in a cigarette of a narrow winding size, the ventilation resistance of the filter is particularly large.

Furthermore, when a multi-segment filter is adopted for a cigarette, the filter ventilation resistance increases in comparison with a plain filter in that it has a plurality of segments. That is, a multi-segment filter is manufactured by first winding the filter medium of each filter segment with raw paper (inner plug wrap) to make a filter segment, and then winding with a paper roll (outer plug wrap) so as to connect the filter segments. . Thus, since the multi-segment filter has more paper surrounding the filter medium than the plain filter, the filter medium needs to have a smaller diameter. For this reason, when a multi-segment filter is adopted for a cigarette of a narrow winding size, the ventilation resistance of the filter is particularly large.

In this way, the charcoal filter and multi-segment filter tend to increase the filter ventilation resistance, and it is more difficult to achieve both the desired low cigarette ventilation resistance and the high tar amount in the thin wound cigarette equipped with such a filter. is there.

On the other hand, another existing technique that can greatly reduce the ventilation resistance of the filter is as follows:
(1) A method of providing one or a plurality of through holes (cylindrical hollow portions) along the longitudinal direction of the filter inside the entire filter or a partial segment of the filter (for example, the central segment of the triple filter) (Patent Document 2) To 4);
(2) A method in which a partial segment of the filter (for example, the central segment of the triple filter) is opened as a gap (see Patent Documents 5 to 7).

When these methods are used, it is possible to design a cigarette of a narrow winding size having a ventilation resistance of 150 mmH ₂ O or less and a tar of 8 mg or more, with the following disadvantages:
・ The strength of the cigarette filter is weakened;
-Barking comfort (appropriate hardness, firmness, etc.), handling during smoking (when removing cigarettes from a package, lightly tapping cigarettes during smoking to remove ash, or at the end of smoking) Worsens the handling when stress is applied, such as when digesting by pressing fire on the ashtray.

Especially in the case of cigarettes with a narrow winding size, the strength is reduced by the thinness, so it is difficult to apply the techniques (1) and (2) above.

In addition, in the case of cigarettes with through holes or gaps on the inlet side as in (1) and (2) above, there may be smokers who feel disgusting that they will absorb unfiltered smoke I also know. Therefore, a technology that does not involve these harmful effects is required.

JP 2001-520874 A International Publication No. 2011/042175 Pamphlet UK Patent Application Publication No. 2091078 International Publication No. 93/08707 Pamphlet US Pat. No. 5,058,608 JP 2006-503572 A US Pat. No. 4,273,141

In view of the above circumstances, an object of the present invention is to provide a thin-rolled cigarette having a low cigarette ventilation resistance and a high tar amount without impairing the strength of the thin-rolled cigarette. In particular, an object of the present invention is to provide a thin-rolled cigarette having a low cigarette ventilation resistance and a high tar amount and having a multi-segment filter without impairing the strength of the thin-rolled cigarette. .

By using acetate tow having a single fineness (Filament denier) of greater than 8.0 g / 9000 m and a total fineness (Total 材 denier) of less than 15000 g / 9000 m as a filter medium, the present inventors have improved the strength of cigarettes with a narrow winding size. The present inventors have found that a desired low cigarette ventilation resistance and a high amount of tar can be achieved at the same time without impairing the present invention, and the present invention has been completed.

That is, according to the present invention,
Tobacco rod including cigarette filler and cigarette wrapping paper wound around the cigarette filler, filter member and filter including winding paper integrally wound around the filter member, cigarette rod and filter A cigarette rod and a chip paper bonded on the filter so as to connect, and a through-hole for allowing air to flow in when smoke is absorbed is formed so as to penetrate the chip paper and the web of the filter section. A cigarette
The cigarette has a diameter of 3.0 to 6.0 mm;
The total amount of air (Q) sucked out from the cigarette inlet is the amount of air (Qt) flowing in from the tip of the cigarette, the amount of air flowing in through the cigarette paper (Qp), and the air flowing in from the through hole of the chip paper In the case of being composed of the amount (Qf), the ratio of the air amount (Qf) flowing from the through hole of the chip paper to the total air amount (Q) is 10 to 60%,
A cigarette is provided wherein the filter member comprises acetate tow having a single fineness greater than 8.0 g / 9000 m and a total fineness less than 15000 g / 9000 m.

In particular, according to the present invention, the cigarette is a multi-segment filter including a plurality of filter segments, wherein at least one of the filter segments has a single fineness greater than 8.0 g / 9000 m and 15000 g / 9000 m. A cigarette is provided that includes acetate tow having a smaller total fineness.

According to the present invention, a cigarette having a narrow winding size having a desired low cigarette ventilation resistance and a high tar amount is provided without impairing the strength of the cigarette having a thin winding size. In particular, according to the present invention, there is provided a thin-wound cigarette having a desired low cigarette ventilation resistance and a high tar amount without impairing the strength of the thin-rolled cigarette and having a multi-segment filter. .

The disassembled perspective view which shows an example of the cigarette of this invention. Explanatory drawing for demonstrating the air inflow amount in the cigarette of this invention. The disassembled perspective view which shows the structure of the dual filter which can be used with the cigarette of this invention. The disassembled perspective view which shows the structure of a channel ventilation dam filter.

Hereinafter, the present invention will be described with reference to the drawings. However, the following description is intended to explain the present invention in detail and is not intended to limit the present invention.

FIG. 1 shows an example of a thin-rolled cigarette according to the present invention. In FIG. 1, one end of the tobacco rod 10 is cut off so that the inside of the tobacco rod 10 can be seen.

The cigarette of the present invention has a diameter of 3.0 to 6.0 mm and a thin winding size. The cigarette of the present invention has a diameter of, for example, 4.5 mm or 5.4 mm. The cigarette of the present invention has the same structure as a normal cigarette with a filter, except that it has a small diameter. That is, the cigarette of the present invention includes the tobacco rod 10 and the filter 20, and the tobacco rod 10 and the filter 20 are connected by the tip paper 30. The total length of the cigarette of the present invention can be set to, for example, 80 to 100 mm.

The cigarette rod 10 is composed of a cigarette filler 11 and a cigarette paper 12 wound around the cigarette filler 11 like a normal cigarette, has a diameter of 3.0 to 6.0 mm, and has a length of 50 to 75 mm, for example. Can have. The tobacco wrapping paper 12 can be 10 to 100 μm thick, and it is common to use paper having air permeability.

The filter 20 is disposed at one end of the tobacco rod 10 and includes a filter member 21 and a web 22 around which the filter member 21 is wound. The filter 20 has approximately the same diameter as the tobacco rod 10 and may have a length of, for example, 25-30 mm. The filter member 21 shown in FIG. 1 has a single so-called plain filter structure. The web 22 wound integrally around the filter member 21 can have a thickness of 10 to 100 μm, and it does not matter whether or not it has air permeability. The web 22 has a through hole 23 at the same position as the through hole 31 of the chip paper 30 so as to communicate with the through hole 31.

The filter member 21 is composed of acetate tow having a single fineness (Filament denier) larger than 8.0 g / 9000 m and a total fineness (Total denier) smaller than 15000 g / 9000 m. The acetate tow of the filter member 21 generally has a single fineness of greater than 8.0 g / 9000 m and 15 g / 9000 m or less, preferably 10 g / 9000 m to 13 g / 9000 m. The filter member 21 generally has a total fineness of 10000 g / 9000 m or more and less than 15000 g / 9000 m, preferably 11000 g / 9000 m to 13000 g / 9000 m. The cross section of the acetate fiber constituting the acetate tow can have an arbitrary shape, for example, a Y shape or a circular shape, and a circle is preferable for the purpose of reducing the ventilation resistance of the filter. The cigarette of the present invention may further include an adsorbent such as activated carbon and a flavor release material such as a fragrance capsule in the filter member 21.

The chip paper 30 is bonded with an adhesive so as to cover the entire web 22 and a part of the cigarette paper 12. A portion of the chip paper 30 covering the winding paper 22 is referred to as “filter chip paper”. For example, the tip paper 30 may have a length (width) in the axial direction of the tobacco rod of 30 to 37 mm and a thickness of 10 to 100 μm. Similar to a normal cigarette with a filter, the chip paper has a through-hole 31 for allowing air to flow into the cigarette (filter member 21) from the outside during smoke absorption. This ventilation through hole (ventilation hole) has a function of allowing air to flow from here during smoking, reducing the amount of air flowing from the tip of the cigarette, and reducing the ventilation resistance of the cigarette. The through holes (ventilation holes) for ventilation are formed in one row along the circumferential direction of the cigarette in FIG. 1, but are formed in a plurality of rows along the circumferential direction of the cigarette. Alternatively, a large number of holes may be formed irregularly. The through hole 31 is formed so as to penetrate the chip paper and the web 22 of the filter portion. As shown in FIG. 2, generally, in a cigarette, the total amount of air (Q) sucked out from the cigarette suction port is the amount of air flowing in from the cigarette tip (Qt) and the amount of air flowing in through the cigarette paper 12 (Qp). And the amount of air (Qf) flowing from the through hole 31 of the chip paper 30. The ratio (Vt) of the air amount (Qt) flowing in from the cigarette tip is expressed by 100 × Qt / Q (%); the ratio (Vp) of the air amount (Qp) flowing through the cigarette paper is 100 X Qp / Q (%); the ratio (Vf) of the amount of air (Qf) flowing from the through hole of the chip paper is represented by 100 x Qf / Q (%). These air ratios (Vt, Vp and Vf) can be determined by measuring under standard smoking conditions using a cigarette quality measuring instrument according to the ISO standard method (ISO9512).

The target tar amount of the cigarette of the present invention is 8 mg or more, but when the acetate tow used in the present invention is used for a filter, the ratio of the amount of air flowing from the through hole of the chip paper to the total air amount (Q) ( Vf) can be 10 to 60%, preferably 20 to 50% in order to achieve the target tar amount. In the cigarette of the present invention, the ratio (Vt) of the air amount flowing from the tip of the cigarette to the total air amount (Q) is generally 28 to 90%, and the cigarette paper flows with respect to the total air amount (Q). The ratio of air volume (Vp) is generally 0-12%.

The above-mentioned Vf value can be obtained by adjusting the size and number of through-holes in the chip paper by changing the output and pulse length of the laser aperture device mounted on the cigarette manufacturing machine.

In the present invention, as described above, the web 22 has the through hole 23 so as to communicate with the through hole 31 at the same position as the through hole 31 of the chip paper 30. Therefore, these through holes can be formed by penetrating not only the chip paper but also the winding paper with a laser opening device. For this reason, the air permeability of the web is not critical.

In order to obtain the above-mentioned Vp value, it is preferable to use a paper having an air permeability of 5 to 100 CU as a raw material for the cigarette paper 12.

As described above, the cigarette of the present invention has a low rate (Vf) of air flowing from the through hole of the chip paper as low as 10 to 60%. A value (ie 8 mg or more) can be achieved. In addition, the cigarette of the present invention has a low filter ventilation resistance, preferably 50 to 90 mmH ₂ O, by using acetate tow having a single fineness greater than 8.0 g / 9000 m and a total fineness smaller than 15000 g / 9000 m as a filter member. The filter ventilation resistance can be achieved. In addition, the cigarette of the present invention has a cigarette filter portion as compared with an existing thin-rolled cigarette equipped with an acetate filter, despite the use of acetate tow having the specific single fineness and total fineness described above. The strength of the bottle was not impaired, and there was no hindrance to handling when applying stress or stress during smoking. Accordingly, the cigarette of the present invention can be achieved without compromising the strength of the cigarette fine wound size, low cigarette pressure drop (i.e. 150mmH 2 _O or less) and high tar value (i.e. more than 8 mg). In the present invention, the term "low cigarette pressure drop" is a 150mmH ₂ O or less, is generally a 100 ~ 150mmH ₂ 0. In the present invention, the “high tar value” is 8 mg or more, and generally 8 to 13 mg.

In the present invention, “filter ventilation resistance” refers to a value measured by using, for example, “ventilation resistance meter A11 (Burghart)” in accordance with ISO standard method (ISO6565), and “cigarette ventilation resistance” is ISO According to the standard method (ISO 6565), for example, the value measured using “NCQA (manufactured by JT Toshi Co., Ltd.)”. The “tar value” refers to a value measured in accordance with ISO standard smoking conditions (ISO 3380, ISO 3402).

In the cigarette of the present invention, the filter can be a multi-segment filter including a plurality of filter segments, for example, a dual filter or a triple filter. In this case, at least one of the filter segments (consisting of the filter medium and the material paper on which the filter medium is wound) has a filter medium made of acetate tow having a single fineness greater than 8.0 g / 9000 m and a total fineness less than 15000 g / 9000 m. Preferably, all of the filter segments have a filter medium consisting of acetate tow having a single fineness greater than 8.0 g / 9000 m and a total fineness less than 15000 g / 9000 m.

For example, in the cigarette of the present invention, the filter is a dual segment filter composed of a first filter segment disposed on the tobacco filler side and a second filter segment disposed on the suction port side. The filter segment is an acetate tow filter containing an adsorbent (for example, activated carbon), the second filter segment is an acetate tow filter, and the filter material of the first and second filter segments is 8.0 g. / Acetate tow having a single fineness greater than 9000 m and a total fineness less than 15000 g / 9000 m.

As described above, when the multi-segment filter is employed in the cigarette of the present invention, acetate tow having a single fineness greater than 8.0 g / 9000 m and a total fineness smaller than 15000 g / 9000 m is similarly used as the filter medium of at least one filter segment. As a result, the cigarette of the present invention can have a low cigarette ventilation resistance (ie, 150 mmH ₂ O or less) and a high tar value (ie, 8 mg or more).

When a multi-segment filter is employed in the cigarette of the present invention, the filter is made of another filter segment using a filter medium other than “acetate tow having a single fineness greater than 8.0 g / 9000 m and a total fineness smaller than 15000 g / 9000 m”. For example, an acetate filter other than the above, a paper filter, or another filter segment using a neofilter using a nonwoven fabric sheet of natural pulp as a filter medium may be included. As these other filter segments, those having a low ventilation resistance are preferable. In the case of a paper filter or a neofilter, a sheet having a low ventilation resistance can be obtained by adjusting the sheet width, sheet basis weight, sheet density, and the like.

The structure of a dual filter that can be employed in the cigarette of the present invention is shown in FIG. 3, and specific examples of the dual filter are given below.

In FIG. 3, the dual filter is composed of a filter segment 21a on the cut side and a filter segment 21b on the inlet side. In each of the

filter segments

21a and 21b, a filter medium (for example, acetate tow) is wound with a raw paper (inner plug wrap). These filter segments are further wound and connected by a web (outer plug wrap) 22 to form a dual filter. The dual filter is further wound by chip paper 30 and connected to the tobacco rod 10 (consisting of the tobacco filler 11 and the tobacco wrapping paper 12).

[First example]
In the first example of the dual filter, the notch side filter segment is an acetate filter impregnated with activated carbon (ie, charcoal filter), and the suction side filter segment is a filter composed of acetate tow (ie, acetate filter). is there. In the chopped filter segment, activated carbon particles are dispersed between acetate fibers in the same manner as a normal charcoal filter.

[Second example]
In the second example, the notch side filter segment is an acetate filter adhering activated carbon particles covered with a glucan membrane as an adsorbent, and the inlet side filter segment is an acetate filter adhering a fragrance (for example, menthol). Yes (see WO 2009/116417). In this example, by covering the activated carbon particles with a glucan membrane, adsorption of the fragrance to the activated carbon can be suppressed during non-smoking, and during smoking, the cigarette mainstream smoke dissolves the glucan membrane, thereby reducing the mainstream smoke component. Can be adsorbed on activated carbon.

[Third example]
In the third example, the cut-out filter segment is an acetate filter in which activated carbon particles covered with a glucan membrane are adsorbed as an adsorbent, and the suction-side filter segment is a thread (thread) impregnated with a fragrance. Acetate filter that penetrates the center of the filter (see WO 2009/116417 and JP-B 63-38187). The notch side filter segment in this example is the same as in the second example. The acetate filter on the suction side includes a thread impregnated with a fragrance, so that the fragrance is added to the smoke passing through the filter at the time of smoke absorption, and the smoker can taste the fragrance component.

[Fourth example]
In the fourth example, the notch side filter segment is an acetate filter impregnated with activated carbon (ie charcoal filter), and the suction side filter segment is called a channel ventilation dam (CVD) channel filter. It is a filter segment.

Fig. 4 shows an example of channel ventilation dumb filter. As shown in FIG. 4, this filter includes an acetate filter medium 41 having grooves on the surface. Since the acetate filter medium 41 is formed by winding a corrugated tape-like acetate tow around the outer periphery of the acetate tow (core part), it has a groove on its surface. For this reason, when the acetate filter medium 41 is wound with the wrapping paper 42, ventilation

air flow paths

43 and 44 are formed between the groove on the surface of the acetate filter medium 41 and the wrapping paper 42. Through this flow path, outside air can be taken in from the opening 46 during smoke absorption. This flow path is blocked by a blocking portion (dam) 45, and this blocking portion (dam) 45 has a role of controlling the ratio of sucked tobacco smoke and ventilation air (Japanese Patent Laid-Open No. 62-29958). reference). Since this filter includes an acetate filter medium 41 having an outer periphery that is slightly smaller than the outer periphery of the cigarette, the use of such a filter segment significantly increases the cigarette ventilation resistance. Therefore, when such a channel ventilation dam filter is used in the present invention, both the suction side filter segment and the notch side filter segment have a single fineness of greater than 8.0 g / 9000 m and less than 15000 g / 9000 m. It is desirable to use acetate tow having a total fineness.

[Fifth Example]
In the fifth example, the notch side filter segment is a filter made of acetate tow (ie, acetate filter), and the suction side filter segment is a channel ventilation dam filter. For the channel ventilation dam filter, reference can be made to the fourth example.

[Sixth example]
In the sixth example, the filter segment on the cut side is an acetate filter impregnated with activated carbon (that is, a charcoal filter), and the filter segment on the suction side is an acetate filter in which one fragrance capsule is embedded between acetate fibers ( See WO 2011/024068). A perfume capsule is arrange | positioned in the center part of a filter segment, and a smoker can taste an aroma component by crushing with a finger before smoking.

[Seventh example]
In the seventh example, the filter segment on the cut side is a filter made of acetate tow (ie, acetate filter), and the filter segment on the suction side is an acetate filter (first filter embedded with one fragrance capsule between acetate fibers). 6).

The multi-segment filter that can be used in the cigarette of the present invention is not limited to the above specific example, and may be another known dual filter or triple filter.

Also in the above specific example, as described above, it is sufficient that at least one of the filter segments has a filter medium made of acetate tow having a single fineness greater than 8.0 g / 9000 m and a total fineness smaller than 15000 g / 9000 m. All have a filter medium consisting of acetate tow with a single fineness greater than 8.0 g / 9000 m and a total fineness less than 15000 g / 9000 m.

As described above, in the present invention, the configuration of a filter (for example, a charcoal filter, a channel, a cigarette filter, a flow rate of cigarette, etc.) is increased in a cigarette having a small winding size with a low ratio (Vf) of air flowing from the through hole of the chip paper. Acetate tow having a single fineness greater than 8.0 g / 9000 m and a total fineness less than 15000 g / 9000 m even when a ventilation dam filter, a multi-segment filter including at least one of fragrance-encapsulated filters is employed. By using as a filter medium, the effects of the present invention (that is, low cigarette ventilation resistance and high tar content) can be achieved.

DESCRIPTION OF SYMBOLS 10 ... Tobacco rod 11 ... Tobacco filler 12 ... Tobacco wrapping paper 20 ... Filter 21 ... Filter member 21a ... Cut-off side filter segment 21b ... Suction side filter segment 22. .... Winding paper 23 ... Through hole 30 ... Chip paper 31 ... Through hole 41 ... Acetate filter medium 42 ... Wrapping

paper

43, 44 ... Channel 45 ... Blocking part (dam)
46: Opening part

Claims

Tobacco rod including cigarette filler and cigarette wrapping paper wound around the cigarette filler, filter member and filter including winding paper integrally wound around the filter member, cigarette rod and filter A cigarette rod and a chip paper bonded on the filter so as to connect, and a through-hole for allowing air to flow in when smoke is absorbed is formed so as to penetrate the chip paper and the web of the filter section. A cigarette
The cigarette has a diameter of 3.0 to 6.0 mm;
The total amount of air (Q) sucked out from the cigarette inlet is the amount of air (Qt) flowing in from the tip of the cigarette, the amount of air flowing in through the cigarette paper (Qp), and the air flowing in from the through hole of the chip paper In the case of being composed of the amount (Qf), the ratio of the air amount (Qf) flowing from the through hole of the chip paper to the total air amount (Q) is 10 to 60%,
The cigarette characterized in that the filter member includes acetate tow having a single fineness greater than 8.0 g / 9000 m and a total fineness less than 15000 g / 9000 m.
The filter is a multi-segment filter including a plurality of filter segments, and at least one of the filter segments includes acetate tow having a single fineness greater than 8.0 g / 9000 m and a total fineness less than 15000 g / 9000 m. The cigarette according to claim 1.
The filter is a dual segment filter including a first filter segment disposed on the tobacco filler side and a second filter segment disposed on the suction side, wherein at least one of the filter segments is from 8.0 g / 9000 m The cigarette according to claim 1, comprising acetate tow having a large single fineness and a total fineness smaller than 15000 g / 9000 m.
The cigarette according to any one of claims 1 to 3, wherein the tar value in the mainstream smoke is 8 mg or more, and the ventilation resistance of the cigarette is 150 mmH 2 O or less.