KR20230116901A - Tow bands for smoking articles, filters for smoking articles, cartridges for smoking articles and smoking articles - Google Patents

Abstract

Tow bands for smoking articles include crimped cellulose acetate fibers. The content of titanium oxide is set to a value in the range of 0% by weight or more and 0.01% by weight or less. The crimp ratio I (%) calculated by Formula 1 satisfies the relationship of Formula 2.
[Equation 1]
Crimp ratio I(%)=[(L1-L0)/L0]×100
However, L0 is the length of the tow band when a load of 250 g is applied to the tow band having a length of 250 mm in a direction in which crimping of the cellulose acetate fibers is extended. L1 is the length of the tow band when a load of 2500 g is applied to the tow band having a length of 250 mm in the above direction.
[Equation 2]
(-11.7+1.2×FD+0.00083×TD)<I(%)<(10.0+1.2×FD+0.00083×TD)

Description

Tow bands for smoking articles, filters for smoking articles, cartridges for smoking articles and smoking articles

The present disclosure relates to tow bands for smoking articles, filters for smoking articles, smoking articles, and cartridges for smoking articles.

In this document, each term defined as follows is used.

TD: Total fiber degree (total denier). TD refers to the fiber content (grams per 9000 m) of the tow assemblage (tow band).

FD: Short fiber degree (filament denier). FD refers to the fiber density (grams per 9000 m) of short fibers (one fiber). FD is also called short fiber denier.

Tow: Refers to a plurality of filament aggregates discharged from the radiation hole of the radiation cylinder. An end or yarn is also an aspect of tow.

Tow band: Tow, which is an aggregate of short fibers discharged from each spinning hole of a plurality of spinning cylinders, is combined into one, and the TD is set to a predetermined value. At the same time as this is combined into one, the tow whose TD is set to a predetermined value is crimped. This crimped tow is the tow band. That is, the tow band has a TD and a number of crimps.

As a material for a filter for a smoking article used in a combusting smoking article to be ignited and smoked, or a tip used in a cartridge of a heated smoking article to be smoked by heating (hereinafter, both are simply referred to as filters), for example, cellulose acetate fibers are used. used Cellulose acetate fibers are spun by ejecting a spinning dope from a spinneret based on, for example, a dry spinning method. A plurality of cellulose acetate fibers are crimped to produce a tow band. This tow band is opened and formed into a cylindrical shape, and winding paper is wound around the outer circumference. A filter is thus produced.

As disclosed in Patent Literature 1, for example, titanium oxide is added as a chlorine agent or whitening agent to a spinning dope for spinning cellulose acetate fibers, in addition to cellulose acetate. In addition, as disclosed in Patent Document 2, for example, a titanium compound is added to the spinning dope for the purpose of improving the spinnability of cellulose acetate fibers.

Patent Document 1: Japanese Patent Publication No. 8-500152 Patent Document 2: British Patent Publication No. 949505

In recent years, it has been desired to manufacture filters using cellulose acetate fibers substantially free of titanium oxide. Cellulose acetate fibers containing no titanium oxide have lower frictional resistance than cellulose acetate fibers containing titanium oxide. Therefore, a filter produced by a tow band comprising cellulose acetate fibers containing no titanium oxide can generate a dent in which the tow band shrinks relative to the wrapper toward the inside from its axial end. The indentation lowers the hardness of the filter. Also, the indentation reduces the feeling of use when the user puts the filter in his/her mouth. Also, the indentation degrades the external quality of the filter.

As a countermeasure to prevent entrapment of the filter, it is conceivable to increase the injection amount of the tow band into the filter, for example. However, the ventilation resistance (PD) of the filter increases. As a result, the ease of inhalation of the filter and the taste to taste through the filter are reduced.

Therefore, the present disclosure is to improve the quality of the filter by preventing the occurrence of intrusion or decrease in hardness while preventing the increase in ventilation resistance in a filter manufactured using cellulose acetate fibers that do not substantially contain titanium oxide The purpose.

A tow band for a smoking article according to one aspect of the present disclosure includes crimped cellulose acetate fibers, the content of titanium oxide is set to a value in the range of 0% by weight or more and 0.01% by weight or less, and the crimp calculated by Formula 1 The ratio I (%) satisfies the relationship of Equation 2.

[Equation 1]

Crimp ratio I(%)=[(L1-L0)/L0]×100

However, L0 is the length of the tow band when a load of 250 g is applied to the tow band having a length of 250 mm in a direction in which crimping of the cellulose acetate fibers is extended. L1 is the length of the tow band when a load of 2500 g is applied to the tow band having a length of 250 mm in the above direction.

[Equation 2]

(-11.7+1.2×FD+0.00083×TD)<I(%)<(10.0+1.2×FD+0.00083×TD)

Equation 2, according to the results of the study by the inventors of the present application, considering each range of FD and TD that can suppress intrusion when a filter is manufactured using a tow band, crimping of the tow band by the relationship between FD and TD The ratio I (%) is described to be derived. According to the above configuration, the crimp ratio I (%) of the tow band is set to a value within a predetermined range according to the relationship between FD and TD of the tow band. This suppresses excessive crimping, for example, in a tow band with a relatively large FD and a relatively small TD. Therefore, shrinkage of the tow band after opening can be reduced. Therefore, even if the cellulose acetate fibers do not substantially contain titanium oxide, when a filter is produced using the tow band, it is possible to make it difficult for the tow band to contract with respect to the wrapper in the axial direction of the filter. As a result, entrapment of the filter can be prevented. In addition, entrapment of the filter can be prevented without increasing the injection amount of the tow band into the filter. Therefore, it is possible to prevent the ventilation resistance of the filter from increasing. In addition, it is possible to prevent deterioration of the external appearance quality of the filter.

FD may be a value in the range of 10 or more and 30 or less, and TD may be a value in the range of 10000 or more and 50000 or less. By setting FD to the above value, the rigidity of the cellulose acetate fibers is improved. Therefore, by setting TD to the above value, for example, when a tow band is injected into a cylindrical filter, the repulsive force imparted by the tow band to the wrapping paper can be increased while maintaining the ventilation resistance of the filter appropriately. This makes it difficult to slip the tow band in the axial direction of the filter relative to the wrapper. As a result, entrapment can be further prevented.

The number of crimps per 10 inch length of surface may be in the range of 250 or more and 350 or less. In this way, the crimping of the tow band can be maintained in a very suitable state. Therefore, when a filter is manufactured using the tow band, it is possible to manufacture a high-quality filter in which intrusion is prevented and the ventilation resistance is appropriately set.

In addition, a filter for smoking articles according to one aspect of the present disclosure includes a filter material including any of the above-described tow bands and formed into a cylindrical shape, and a wrapper wrapped around an outer circumference of the filter material, The penetration of the filter material from the end of the wrapper is a value in the range of 1 mm or less.

Filters for smoking articles may have a circumference of 15 mm or more and 18 mm or less, and a TD of 15000 or more and 20000 or less. Alternatively, the filter for smoking articles may have a circumference of 21 mm or more and less than 23 mm, and a TD of 25000 or more and 30000 or less. Alternatively, the filter for smoking articles may have a value in the range of 23.5 mm or more and 25.5 mm or less, and a TD value in the range of 30000 or more and 40000 or less.

In addition, a smoking article according to one aspect of the present disclosure includes any of the smoking article filters described above, and a substrate formed into a cylindrical shape and disposed on one end side of the smoking article filter in the axial direction, and containing tobacco leaves.

In addition, a cartridge for a smoking article according to one aspect of the present disclosure includes a substrate including tobacco leaves, a hollow member through which components generated by heating the substrate pass therethrough, a coolant that cools the components passing through the hollow member, and the coolant. and a filter material for filtering a portion of the components passing through the hollow material, wherein at least one of the hollow material, the coolant material, and the filter material includes any of the tow bands described above.

According to the present disclosure, in a filter manufactured using cellulose acetate fibers that do not substantially contain titanium oxide, the quality of the filter can be improved by preventing the occurrence of intrusion or decrease in hardness while preventing an increase in ventilation resistance. there is.

1 is a schematic diagram of a tow band manufacturing apparatus according to an embodiment.
2 is a schematic diagram of a filter manufacturing apparatus according to an embodiment.
3 is a cross-sectional view of a heated smoking article according to an embodiment.
4 is a partially developed view of a combustion smoking article according to an embodiment.

An embodiment will be described with reference to the drawings. "Smoking" mentioned in this document includes both the case of lighting and smoking and the case of smoking by heating a base material containing tobacco leaves without ignition.

(Embodiment)

[Cellulose Acetate Tow Band Manufacturing Device]

1 is a schematic view of a cellulose acetate (hereinafter also referred to as CA) tow band manufacturing apparatus 1. The CA tow band manufacturing apparatus 1 continuously spins CA fibers 61, which are long fibers, by a dry spinning method. In addition, CA tow band manufacturing apparatus 1 uses CA fibers 61 to manufacture yarns 62, ends 63, and CA tow bands 64. CA tow band 64 is a tow band for smoking articles. The CA tow band manufacturing device 1 includes a mixing device 2, a filtering device 3, a spinning unit 4, an emulsion impregnation unit 5, a godet roll 6, and a crimping device ( 7) and a drying device (8).

In the CA tow band manufacturing apparatus 1, a spinning dope 60 in which cellulose acetate flakes such as cellulose diacetate are dissolved in an organic solvent at a predetermined concentration is used. This spinning dope 60 contains substantially no titanium oxide. Specifically, the titanium oxide concentration of the spinning dope 60 is a value in the range of 0% by weight or more and 0.01% by weight or less of the titanium oxide content of the CA fibers 61 to be spun.

After the spinning dope 60 is mixed by the mixing device 2, it is filtered by the filtering device 3. The spinning stock solution 60 that has passed through the filtering device 3 is supplied to the spinneret 15 disposed above the spinning tube 14 of the spinning unit 4 . The spinning dope 60 is discharged from a plurality of spinning holes 15a of the spinneret 15. The peripheral shape of the radiation hole 15a is, for example, a triangle, but is not limited thereto. The peripheral shape of the radiation hole 15a may be circular, for example. The size of the radiation hole 15a is appropriately set according to the FD of the CA fiber 61 after manufacture.

The spinning dope 60 discharged from each spinning hole 15a comes into contact with hot air supplied into the spinning cylinder 14 . The spinning dope 60 is dried by volatilizing the organic solvent. As a result, solid CA fibers 61 are formed. A plurality of CA fibers 61 passing through one spinning tube 14 are bundled to form a yarn 62 . The yarn 62 is wound up by the godet roll 6 after the fiber emulsion is attached thereto by the emulsion adhering unit 5. The yarn 62 is then taken up by a predetermined take-up device.

In the CA tow band manufacturing apparatus 1, a plurality of yarns 62 are accumulated or laminated. In this way, a plurality of yarns 62 are bundled to form an end (tow) 63 that is a flat aggregate of yarns 62 . End 63 has a certain TD. The end 63 is conveyed and introduced into the crimping device 7 .

The crimping device 7 has a pair of nip rolls 16, 17 and a stuffing box 18. The end 63 is pushed into the stuffing box 18 after nip pressure is applied at the nip point of the pair of nip rolls 16 and 17. As a result, the end 63 is crimped to produce a CA tow band 64. The CA tow band 64 passed through the crimping device 7 is dried and accumulated by the drying device 8. After that, the CA tow bands 64 are compressed and packed in the packing container 19 in a bale state.

Here, in the CA tow band 64, the crimp ratio I (%) calculated by Equation 1 satisfies the relationship of Equation 2.

[Equation 1]

Crimp ratio I(%)=[(L1-L0)/L0]×100

However, L0 is the length of the CA tow band 64 when a load of 250 g is applied to the CA tow band 64 having a length of 250 mm in the direction of extending the crimp of the CA fiber 61. L1 is the length of the CA tow band 64 when a load of 2500 g is applied to the 250 mm long CA tow band 64 in the above direction.

[Equation 2]

(-11.7+1.2×FD+0.00083×TD)<I(%)<(10.0+1.2×FD+0.00083×TD)

Equation 2 shows that the crimp ratio I (%) of the CA tow band 64 is set in relation to FD and TD of the CA tow band 64. The CA toe band 64 satisfies the relationship of Equation 2, so that the FD is set to a relatively large value and the TD is set to a relatively small value, and the CA toe band 64 is used for filter purposes. As a value, the crimp ratio I (%) is set. That is, excessive crimping of the CA tow band 64 is suppressed. As a result, the shrinkage of the CA tow band 64 due to crimping after opening is reduced. Therefore, when manufacturing a filter using the CA tow band 64, shrinkage of the CA tow band 64 in the axial direction of the filter by crimping is reduced even when the amount injected into the filter is not so large.

FD of the CA toe band 64 can be appropriately set to a value within a range in which Equation 2 is satisfied. As the FD of the CA toe band 64, a value in the range of 10 or more and 30 or less can be exemplified as an example. As another example, as the lower limit of the FD of the CA toe band 64, one of 9.9, 10, 11.8, 19.2 and 20 may be exemplified. Also, as the upper limit value of the FD of the CA toe band 64, one of 25 and 30, which is larger than the lower limit value, can be exemplified.

The TD of the CA toe band 64 can be appropriately set to a value within a range that Equation 2 is satisfied. As the TD of the CA toe band 64, a value in the range of 10000 or more and 50000 or less can be exemplified as an example. As another example, as the lower limit of the TD of the CA toe band 64, one of 10000, 15000, 16800, 17000, 25000, 25700, and 30000 may be exemplified. Also, as the upper limit value of the TD of the CA toe band 64, one of 20000, 30000, 40000, and 50000, which is larger than the lower limit value, can be exemplified.

When the CA toe band 64 has an FD of 10 and a TD of 10000, the crimp ratio I (%) is a value in the range of 8.6 or more and 30.3 or less. In addition, when the CA toe band 64 has an FD of 10 and a TD of 50000, the crimp ratio I (%) is a value in the range of 41.8 or more and 63.5 or less. In addition, when the CA toe band 64 has an FD of 30 and a TD of 10000, the crimp ratio I (%) is a value in the range of 32.6 or more and 54.3 or less. In addition, when the CA toe band 64 has an FD of 30 and a TD of 50000, the crimp ratio I (%) is a value in the range of 65.8 or more and 87.5 or less.

In addition, the CA tow band 64 of the present embodiment has a value in the range of 250 or more and 350 or less in the number of crimps per 10-inch length of the surface. The number of crimps here can be measured based on the measurement method described in Unexamined-Japanese-Patent No. 7-316975, for example. That is, a captured image of the surface of the illuminated CA toe band 64 is converted into data of 256 gradations of light quantity level using, for example, a personal computer or an image processing device. Then, the number of crimps can be measured by counting, as crimps, peaks having a gradation level difference of 10 or more in the data from which noise peak waveforms shorter than the primary crimping cycle are removed.

In this way, according to the above configuration, the crimp ratio I (%) of the CA tow band 64 is set to a value within a predetermined range according to the relationship between FD and TD of the CA tow band 64 . This suppresses excessive crimping, for example, in the CA tow band 64 with relatively large FD and relatively small TD. Therefore, shrinkage of the CA tow band 64 after opening can be reduced. Therefore, even if the CA fibers 61 do not substantially contain titanium oxide, when the filter is manufactured using the CA tow band 64, it is difficult to shrink the CA tow band 64 relative to the wrapper in the axial direction of the filter. can do. As a result, entrapment of the filter can be prevented. In addition, entrapment of the filter can be prevented without increasing the amount of CA tow band 64 injected into the filter. Therefore, it is possible to prevent the ventilation resistance of the filter from increasing. In addition, it is possible to prevent deterioration of the external appearance quality of the filter.

In addition, the CA toe band 64 of the present embodiment has an FD of 10 or more and a value of 30 or less, and a TD of 10000 or more and 50000 or less. By setting FD to the above value, the rigidity of the CA fiber 61 is improved. Therefore, by setting TD to the above value, for example, when the CA tow band 64 is injected into a cylindrical filter, the repulsive force imparted by the CA tow band 64 to the wrapping paper is reduced while maintaining the ventilation resistance of the filter appropriately. can increase This makes it difficult to slip the CA tow band 64 in the axial direction of the filter relative to the wrapping paper. As a result, entrapment can be further prevented.

In addition, the CA tow band 64 of the present embodiment has a value in the range of 250 or more and 350 or less in the number of crimps per 10-inch length of the surface. In this way, the crimping of the CA tow band 64 can be maintained in a very suitable state. Therefore, when a filter is manufactured using the CA tow band 64, a filter with a properly set ventilation resistance and which is prevented from being infiltrated can be manufactured with high quality.

[Filter Manufacturing Equipment]

2 is a schematic diagram of a filter manufacturing apparatus 20 according to an embodiment. As shown in Fig. 2, the filter manufacturing apparatus 20 includes a focusing ring 21, a first carding unit 22, a guide 23, a second carding unit 24, a pair of pretension rolls 25, 1 opening roll pair 26, 2nd opening roll pair 27, 3rd opening unit 28, plasticizer attachment device 29, transfer roll pair 30, transport jet 31, winding tube ) portion 32 and a cutting device 33.

In the filter manufacturing device 20, the CA tow band 64 pulled from the inside of the packing container 19 passes through the inside of the collecting ring 21, and then is opened in the width direction by pressurized gas in the first carding unit 22. do. The CA toe band 64 is then guided by the guide 23. Next, the CA tow band 64 is opened again in the width direction by pressurized gas in the second carding unit 24, and then between the pre-tension roll pair 25, the first carding roll pair 26, and the second carding unit 24. It is inserted in order between the two island roll pairs 27. As a result, the CA tow band 64 is opened in the conveying direction.

The CA tow band 64 passed between the second opening roll pair 27 is opened in the width direction again by pressurized gas in the third carding unit 28. After that, the CA tow band 64 is attached with a plasticizer by means of a plasticizer attachment device 29 . The CA tow band 64 passing through the plasticizer adhering device 29 is inserted between the conveying roll pair 30. After that, the CA tow band 64 is introduced into the transport jet 31 and carried into the winding section 32 by the jet stream.

The winding portion 32 has a funnel 41 , a tongue 42 and a garniture 43 . The CA tow band 64 carried into the winding section 32 is wound around the funnel 41 and formed into a cylindrical shape. In this way, the filter material 65 formed into a cylindrical shape including the CA tow band 64 is formed. Also, the wrapper 40 is guided toward the filter material 65 by means of the tongue 42 . The filter material 65 is conveyed by the garniture 43, and the wrapping paper 40 is wound around the outer circumference thereof and fixed at the same time.

The cutting device 33 cuts the filter material 65 into predetermined dimensions. This produces a plug (rod) 66. By further cutting the plug 66, the filter material 65 including the CA tow band 64 and the filter 67 including the wrapping paper 40 wound around the outer periphery of the filter material 65 are manufactured.

As described above, in the CA tow band 64 included in the filter 67, the content of titanium oxide is set to a value in the range of 0% by weight or more and 0.01% by weight or less, and the crimp ratio I (calculated by Formula 1) %) satisfies the relationship of Equation 2. The filter 67 is thereby prevented from entrapment. Also, in the filter 67, the injection amount of the CA tow band 64 is appropriately set, and the CA toe band 64 is not excessively injected. As a result, the filter 67 has an appropriate ventilation resistance.

[Heated smoking articles]

3 is a cross-sectional view of a heated smoking article 50 according to an embodiment. This smoking article 50 is a heated cigarette. The smoking article 50 is of an elongated shape and includes a unit 51 and an exchangeable cartridge 52 . As an example, the unit 51 includes a case 53, a heating unit 57 for heating a substrate 70 to be described later of the cartridge 52, a power supply 54 as a driving source for operation, and a display unit for displaying information to the user. (55), an operation unit 58 operated by a user, and a control unit 56 that controls the display unit 55 and the heating unit 57.

Cartridge 52 is an aerosol-generating article used in smoking article 50 . The cartridge 52 includes a substrate 70, a hollow member 71, a coolant 72, and a tip 73. As an example, the cartridge 52 is molded into a cylindrical shape. In addition, each of the base material 70, the hollow material 71, and the filter material 65 is also molded into a cylindrical shape. The hollow member 71, the coolant 72, and the tip 73 are integrally wound by the wrapper 74 while being arranged side by side in the longitudinal direction. When the smoking article 50 is used, the cartridge 52 is inserted into the insertion hole 51a formed at the other longitudinal end of the unit 51. In the cartridge 52 of this embodiment, at least one of the hollow member 71, the coolant 72, and the tip 73 includes a CA tow band 64. By configuring two or more of the components 71 to 73 so as to include the CA toe band 64, it is possible to achieve a common material for the cartridge 52. Thereby, the manufacturing efficiency of the cartridge 52 can be improved.

Substrate 70 includes tobacco leaves. Substrate 70 includes tobacco components that can be vaporized by heating. Substrate 70 is heated by heating section 57 during use of smoking article 50 to vaporize tobacco components. The substrate 70 of this embodiment also contains flavor components such as nicotine that can be vaporized by heating. The substrate 70 is disposed at one end of the cartridge 52 in the longitudinal direction (on the insertion side into the insertion port 51a).

The substrate 70 may include, for example, at least one of tobacco ribs, expanded tobacco, homogenized tobacco, and herb leaves. These materials are included in the substrate 70 in the form of solids, liquids, or both solid and liquid forms, such as, for example, fine fragments, powders, filaments, or bands. may have been When the material is contained in a liquid, the liquid of the material may be sealed in a capsule. These capsules are heated and dissolved upon use of the smoking article 50 .

The flavor component may be held in a thermally stable carrier. In addition, the flavor component may be held in the carrier in any form of a sheet, foam, gel, or slurry. In addition, the flavor component may be dispersed in the substrate 70 or may be localized at a specific position in the substrate 70 .

The hollow member 71 is disposed between the substrate 70 and the coolant 72 . The hollow member 71 is formed normally. The hollow material 71 passes components generated by heating the substrate 70 therein. In addition, the hollow member 71 functions as a separator that separates the substrate 70 and the coolant 72 from each other. The hollow member 71 prevents the substrate 70 from being crushed when the cartridge 52 is inserted into the unit 51 from the insertion port 51a, the cartridge 52 is compressed in the longitudinal direction. The hollow material 71 of this embodiment includes the CA tow band 64. The hollow member 71 may contain other materials such as polypropylene.

The coolant 72 cools the components passing through the hollow member 71 . The coolant 72 of this embodiment cools and aggregates the gaseous components from the substrate 70 that have passed through the hollow member 71, thereby generating aerosols (droplets). The coolant 72 includes, for example, a strip-like sheet body wound in the circumferential direction of the cartridge 52 or a strip-like sheet body finely folded so that each fold extends in the longitudinal direction of the cartridge 52 . In the coolant 72, a flow path of the aerosol is formed by the gap between the sheet body wound or folded in this way.

The coolant 72 of this embodiment includes a CA tow band 64. The coolant 72 may contain, for example, at least one of polyethylene, polypropylene, polyvinyl chloride, PETG (high-strength polyethylene terephthalate (polyethylene terephthalate copolymer)), polylactic acid, and starch-based polyester. . Also, the sheet body of the coolant 72 may be made of any material such as porous paper or aluminum foil.

Tip 73 filters some of the components that have passed through coolant 72 . Tip 73 is filter 67 . The tip 73 is disposed on the opposite side of the cartridge 52 from the substrate 70 . Tip 73 is bitten by the user upon use of smoking article 50 . The tip 73 filters the aerosol that has passed through the coolant 72.

Here, it is very suitable that the breathability of the heated smoking article is close to that of, for example, a cigarette, which is a combustion smoking article. Therefore, the tip 73 includes a CA tow band 64 in which a plurality of CA fibers 61 are crimped, like a filter of a cigarette, which is a combustion smoking product.

The dimension of the tip 73 in the insertion direction to the insertion hole 51a (hereinafter referred to as the length dimension of the tip 73) can be set appropriately. The length of the tip 73 is set to a value within the range of 5 mm or more and 35 mm or less, for example. Further, as the lower limit of the length of the tip 73, for example, one of 5 mm, 7 mm, and 10 mm can be exemplified. In addition, as an upper limit of the length dimension of the tip 73, one of 17 mm, 20 mm, 25 mm, 28 mm, 30 mm, and 35 mm can be exemplified.

The ventilation resistance of the tip 73 is proportional to the length dimension of the tip 73. The ventilation resistance of the tip 73 can be calculated, for example, by comparing the length of the tip 73 with the length of the filter material 65 whose ventilation resistance is already known. The circumference of the tip 73 can be set appropriately, but is a value in the range of 15 mm or more as an example. The circumference of the tip 73 may exemplify a value in the range of 16 mm or more and less than 17 mm as an example. As another example, the circumference of the tip 73 may exemplify a value in the range of 21 mm or more and less than 23 mm. Also, as another example, the circumference of the tip 73 may exemplify a value in the range of 23.5 mm or more and 25.5 mm or less.

When using the smoking article 50, the user inserts the cartridge 52 into the unit 51 from the insertion port 51a. Then, the operation unit 58 is operated to turn on the power supply of the unit 51. The control unit 56 controls the power supply circuit to heat the heating unit 57 with electric power from the power supply 54 . When the heating unit 57 is heated to a predetermined temperature and a predetermined time elapses, the control unit 56 displays the fact that smoking is possible through the display unit 55 to the user.

When the user bites the tip 73 and breathes in, the gas component from the substrate 70 generated by being heated by the heating unit 57 flows through the hollow member 71 . At least a part of the gaseous components passing through the hollow member 71 is cooled and condensed when flowing through the gaps of the coolant 72 . This generates an aerosol. After passing through the coolant 72, the aerosol passes through the tip 73 and is absorbed by the user.

Here, in the cartridge 52, entrapment of the tip 73 is prevented. Therefore, it is prevented that the hardness of the tip 73 is lowered due to the depression of the tip 73 . As a result, the user can obtain a good feeling of use when holding the tip 73 in the mouth. In addition, deterioration of the appearance quality of the cartridge 52 due to the indentation of the tip 73 is prevented. Also, tip 73 is not over-injected with CA toe band 64. Therefore, the tip 73 is set to a value not too high in ventilation resistance. This prevents the tip 73 from excessively filtering the aerosol. Therefore, the user can obtain a good taste with the cartridge 52 .

Also, since the CA tow band 64 is properly crimped, the tip 73 has a stable amount of CA tow band 64 injected. In this way, for example, when a capsule is disposed inside the tip 73, the position of the capsule within the tip 73 is suppressed from being fluctuated due to unevenness in the density of the CA tow band 64. Therefore, positioning of the capsule within the tip 73 can be easily performed. Also, the tip 73 used in heated smoking articles 50 may be shorter in length than those used in combustible smoking articles. In this case, when the tip 73 causes the indentation, the ratio of the indentation in the longitudinal direction of the tip 73 increases. For this reason, inconvenience due to entrapment increases. In the present embodiment, inconvenience due to such entrapment can be satisfactorily prevented.

[combustion smoking articles]

4 is an exploded view of a portion of a combustion smoking article 45 of an embodiment. FIG. 4 shows a state in which the internal configuration of the smoking article 45 is shown with the winding paper 46 partially unfolded. The smoking article 45 shown in FIG. 4 is ignited and smoked. The smoking article 45 of this embodiment is a cigarette. The smoking article 45 includes a substrate 47, a filter (filter for smoking articles, cigarette filter) 67, and winding paper 46. The base material 47 has a cigarette filler 48 containing tobacco leaves, and a wrapper 49 wound around the cigarette filler 48. The substrate 47 is molded into a cylindrical shape and is disposed at one end of the filter 67 in the axial direction. The winding paper 46 is wound over the outer circumference of the base material 47 and the filter 67 in a state where the base material 47 and the filter 67 are arranged side by side in the longitudinal direction. The smoking article 45 is, for example, a thin cigarette having a diameter greater than or equal to 3.0 mm and less than or equal to 6.0 mm. As a format of a thin cigarette, "super slim" or "ultra super slim" can be exemplified, but is not limited thereto. As another example, as the format of the cigarette of the smoking article 45, "demi-slim" or "regular" can be exemplified, but is not limited thereto.

The smoking article 45 has, for example, a circumference ranging from 15 mm to 18 mm and a TD ranging from 15000 to 20000. Further, the smoking article 45, as another example, has a circumference in the range of 21 mm or more and less than 23 mm, and a TD in the range of 25000 or more and 30000 or less. Further, the smoking article 45, as another example, has a circumference ranging from 23.5 mm to 25.5 mm and a TD ranging from 30000 to 40000. In the filter 67, the value in which the indentation of the filter material 65 from the end of the wrapping paper 40 in the axial direction of the filter material 65 is in the range of 1 mm or less. The smoking article 45 is prevented from entrapment in the filter 67, even if it is, for example, a cigarette. Also, the filter 67 has an appropriate ventilation resistance. Because of this, the ease of inhalation at the time of smoking of the smoking article 45 is maintained. Also, good filtration performance of the filter 67 is obtained. This effect is equally obtained even if the smoking article 45 is a cigarette having a certain diameter. The smoking article 45 may be other than a cigarette.

Next, a filter according to a modified example of the embodiment will be described. The filter according to this modification is disposed at one end in the axial direction of the cigar. This filter has the same structure as the tip 73 (filter 67). Although a cigarillo can be exemplified as a format of a cigar to which this filter is applied, it is not limited thereto.

(confirmation test)

Next, the confirmation test is described. This indication is not limited to Examples 1-4 shown below.

[Test 1]

CA tow bands and plugs of Examples 1 to 4 and Comparative Examples 1 to 5 were manufactured in the following procedure. 29% by weight of CA flakes of cellulose diacetate were dissolved in an organic solvent (acetone and water mixture) to prepare a spinning dope 60 having a titanium oxide concentration of 0% by weight. The CA fiber 61 (Y-shaped cross-sectional shape) of Example 1 was spun using a plurality of spinnerets 15 having a plurality of spinning holes 15a having a triangular periphery shape with a side length of 118 μm. did. Here, a total of 15 spinnerets 15 were used. This spinneret 15 has 145 spinning holes 15a per one.

By adjusting the discharge amount from the spinning hole 15a, the winding speed of the winding device for winding the spun CA fibers 61, and the circumferential speed of the pair of nip rolls 16 and 17, the FD is about 10 (actually measured value). 9.9) and a TD of about 17000 (measured value 16800), the CA tow band 64 of Example 1 was prepared. In the crimping device 7, by adjusting the nip pressure of the pair of nip rolls 16 and 17 and the pressing force for pushing the end 63 into the stuffing box 18, the crimping ratio I (% ) was set at 25%.

In addition, a CA tow band 64 having an FD of about 12 (measured value 11.8) and a TD of about 25000 (measured value 25700) was spun, and the crimp ratio I (%) was set to 43% based on Equation 2 A CA tow band 64 of Example 2 was manufactured in the same manner as in Example 1 except for this. In addition, the CA tow band 64 of Example 3 was manufactured in the same manner as in Example 2 except that the crimp ratio I (%) was set to 32%. In addition, CA tow band 64 having an FD of about 20 (measured value 19.2) and a TD of 27000 (measured value 27000) was spun, and the crimp ratio I (%) was set to 45%. CA tow band 64 of Example 4 was manufactured by the same method.

In addition, a CA tow band of Comparative Example 1 was manufactured in the same manner as in Example 1 except that the crimp ratio I (%) of the CA tow band was set to 47%. In addition, the CA tow band of Comparative Example 2 was prepared by the same method as in Example 2 except that a mixed solution having a titanium oxide concentration of 0.5% by weight was used and the crimp ratio I (%) of the CA tow band was set to 56%. manufactured In addition, a CA tow band of Comparative Example 3 was manufactured in the same manner as in Example 2, except that the crimp ratio I (%) of the CA tow band was set to 56%. In addition, a CA tow band of Comparative Example 4 was manufactured in the same manner as in Example 2 except that the crimp ratio I (%) of the CA tow band was set to 22%. In addition, the CA tow band of Comparative Example 5 was manufactured in the same manner as in Example 4 except that the crimp ratio I (%) of the CA tow band was set to 66%. The number of crimps per 10 inch length of the CA tow bands of Examples 1 to 4 and Comparative Examples 1 to 5 was measured by the method described above.

Next, using the CA tow bands of Examples 1 to 4 and Comparative Examples 1 to 5, just before cutting the electronic cigarette tip by the filter manufacturing device 20 (Hauni Co., Ltd. traction machine "KDF-2") It was confirmed whether it was possible to manufacture a plug (rod), an intermediate chain of As a result, in Comparative Example 4, the crimping of the CA tow band was insufficient, causing problems such as the CA fiber being entangled in the filter manufacturing apparatus 20, making it difficult to manufacture a plug. Therefore, plugs were manufactured for Examples 1 to 4 and Comparative Examples 1 to 3 and 5.

The length dimension of the plugs of Examples 1 to 4 and Comparative Examples 1 to 3 and 5 was set to 120 mm. The perimeters of the plugs of Example 1 and Comparative Example 1 were set to 16.5 mm. The perimeter of the plugs of Examples 2 to 4 and Comparative Examples 2 to 3 and 5 was set to 22.5 mm. The injection amount of the CA tow band into the plugs of Example 1 and Comparative Example 1 (the injection amount per unit length of the plug: NTW) was set to 0.29 g/rod. The injection amount of the CA tow band into the plugs of Examples 2 to 4 and Comparative Examples 2 to 3 (injection amount per plug length (rod length): NTW) was set to 0.47 g/rod. The injection amount of the CA tow band into the plugs of Example 4 and Comparative Example 5 (injection amount per unit length of tip: NTW) was set to 0.5 g/rod.

Further, in each of Examples 1 to 4 and Comparative Examples 1 to 3 and 5, 10 plugs were prepared, and appearance abnormalities of the plugs were confirmed in the following procedure. First, each of the plurality of plugs of Examples 1 to 4 and Comparative Examples 1 to 3 and 5 was placed on a table with an inclination angle of 45 degrees so that the longitudinal direction was along the top and bottom. In this state, the presence or absence of an abnormal appearance was confirmed using a microscope equipped with a scale capable of measuring the length of the object. Thus, the penetration depth of each plug (the penetration depth of the filter material from the end of the wrapping paper in the axial direction of the filter material) was measured. Then, the average value of the measured values was calculated.

Further, in each of Examples 1 to 4 and Comparative Examples 1 to 3 and 5, tips were prepared by cutting the prepared 10 plugs to a length of 7 mm. To each of these tips, the remaining portion cut off from the tip from Philip Morris International Inc.'s (Philip Morris International Inc.) cartridge "Heat Stick (registered trademark)" for "iQOS" was connected to prepare a test cartridge. The ventilation resistance (PD) (mmWG) of each aerosol-generating component was measured using a filter plug measuring instrument (automatic ventilation resistance measuring instrument) "QTM" manufactured by Cerulean Co., Ltd. Then, the average value of the measured values was calculated. The test results are shown in Tables 1 and 2. In Tables 1 and 2, each value of the penetration depth of the plug and the ventilation resistance of the aerosol-generating component is shown as an average value.

Example 1 Example 2 Example 3 Example 4 Titanium oxide content (% by weight) of CA tow band 0 0 0 0 FD 9.9 11.8 11.8 19.2 TD 16800 25700 25700 27000 Crimp ratio I (%) according to Equation 2 14.1<I(%)<35.8 23.8<I(%)<45.5 23.8<I(%)<45.5 33.8<I(%)<55.5 Measured crimp ratio I (%) 25 43 32 45 Whether the plug is processed possible possible possible possible PD (mmWG) 355 115 115 79 Abnormal appearance of plug end Indentation less than 1 mm Indentation less than 1 mm Indentation less than 1 mm Indentation less than 1 mm Number of crimps per 10 inch length 300 340 290 300 Injection amount of CA toe band into plug (NTW (g)) 0.29 0.47 0.47 0.5 Plug circumference (mm) 16.5 22.5 22.5 22.5

Comparative Example 1 Comparative Example 2 Comparative Example 3 Comparative Example 4 Comparative Example 5 Titanium oxide content (% by weight) of CA tow band 0 0.5 0 0 0 FD 9.9 11.8 11.8 11.8 19.2 TD 16800 25700 25700 25700 27000 Crimp ratio I (%) according to Equation 2 14.1<I(%)<35.8 23.8<I(%)<45.5 23.8<I(%)<45.5 23.8<I(%)<45.5 33.8<I(%)<55.5 Measured crimp ratio I (%) 47 56 56 22 66 Whether the plug is processed possible possible possible not allowed possible PD (mmWG) 360 120 120 - 81 Abnormal appearance of plug end More than 1 mm indentation Indentation less than 1 mm More than 1 mm indentation - More than 1 mm indentation Number of crimps per 10 inch length 400 400 400 240 400 Injection amount of CA toe band into plug (NTW (g)) 0.29 0.47 0.47 - 0.5 Plug circumference (mm) 16.5 22.5 22.5 - 22.5

As shown in Table 1, Examples 1 to 4 set the injection amount of the CA tow band equivalent to Comparative Examples 1 to 3 and 5, but less penetration of the plug and depth of penetration than Comparative Examples 1, 3 and 5. was confirmed to be less than 1 mm. As a result, it was confirmed that the plugs of Examples 1 to 4 had a good appearance. Further, in Examples 1 to 4, it was confirmed that the ventilation resistance of the tip 73 in the cartridge 52 was appropriately set, and the aerosol of the cartridge 52 could be sucked in well during use of the smoking article 50. . From the above, the superiority of Examples 1 to 4 over Comparative Examples 1 to 5 was confirmed. In addition, from the tendency shown by these test results, the FD of the CA toe band 64 is greater than 19.2 and a value in the range of 30 or less, and the TD of the CA toe band 64 is greater than 27000 and a value in the range of 30000 or less Even in this case, it is considered that excellent results similar to Examples 1 to 5 were obtained.

Each configuration and combination thereof in the embodiment is an example, and appropriate addition, omission, substitution, and other changes to the configuration are possible within a range not departing from the spirit of the present disclosure. This disclosure is not limited by the embodiments, but only by the claims. Additionally, each aspect disclosed herein may be combined with any other feature disclosed herein.

45 Combustion smoking article
50: heated smoking article
52: cartridge
61 CA fiber
64, 164: CA tow band
65: filter material
67 filter (filter for smoking articles)
70: base
71: hollow material
72 coolant
73: tip (filter)

Claims (9)

Comprising crimped cellulose acetate fibers,
The content of titanium oxide is set to a value in the range of 0% by weight or more and 0.01% by weight or less,
A tow band for smoking articles, wherein the crimp ratio I (%) calculated by formula 1 satisfies the relationship of formula 2.
[Equation 1]
Crimp ratio I(%)=[(L1-L0)/L0]×100
However, L0 is the length of the tow band when a load of 250 g is applied to the tow band having a length of 250 mm in a direction in which crimping of the cellulose acetate fibers is extended. L1 is the length of the tow band when a load of 2500 g is applied to the tow band having a length of 250 mm in the above direction.
[Equation 2]
(-11.7+1.2×FD+0.00083×TD)<I(%)<(10.0+1.2×FD+0.00083×TD) The method of claim 1, wherein FD is a value in the range of 10 or more and 30 or less,
A tow band for a smoking article, wherein the TD is a value in the range of 10000 or more and 50000 or less. The tow band for a smoking article according to claim 1 or 2, wherein the number of crimps per 10 inch length of the surface is in the range of 250 or more and 350 or less. A filter material including the tow band according to any one of claims 1 to 3 and molded into a cylindrical shape;
A wrapper for winding the outer circumference of the filter material,
The filter for a smoking article according to claim 1 , wherein the indentation of the filter material from the end of the wrapper in the axial direction of the filter material is a value in the range of 1 mm or less. The filter for a smoking article according to claim 4, wherein the circumference is a value in the range of 15 mm or more and 18 mm or less, and the TD is a value in the range of 15000 or more and 20000 or less. The filter for a smoking article according to claim 4, wherein the circumference is a value in the range of 21 mm or more and less than 23 mm, and the TD is a value in the range of 25000 or more and 30000 or less. The filter for a smoking article according to claim 4, wherein the circumference is a value in the range of 23.5 mm or more and 25.5 mm or less, and the TD is a value in the range of 30000 or more and 40000 or less. The filter for smoking articles according to any one of claims 4 to 7;
A smoking article comprising a base material formed into a cylindrical shape and disposed on one end side in an axial direction of the filter for the smoking article, and comprising tobacco leaves. Substrates containing tobacco leaves,
A hollow material through which components generated by heating the base material are passed therein;
A coolant for cooling the component passing through the hollow member;
A filter material for filtering some of the components passing through the coolant,
A cartridge for a smoking article, wherein at least one of the hollow material, the coolant material and the filter material includes the tow band according to any one of claims 1 to 3.