WO2022137322A1

WO2022137322A1 - Tow band for smoking article, filter for smoking article, smoking article, and cartridge for smoking article

Info

Publication number: WO2022137322A1
Application number: PCT/JP2020/047849
Authority: WO
Inventors: 知治宮下; 暢志木村
Original assignee: 株式会社ダイセル
Priority date: 2020-12-22
Filing date: 2020-12-22
Publication date: 2022-06-30
Also published as: EP4085770B1; EP4085770A4; EP4085770A1; KR20230116901A; EP4085770C0

Abstract

This tow band for a smoking article includes crimped cellulose acetate fibers. According to the present invention, the contained amount of titanium oxide is set in the range of 0-0.01 wt%. A crimp ratio I (%) calculated from formula 1 satisfies a relationship represented by formula 2. [Formula 1] crimp ratio I(%) = [(L1 - L0)/L0] × 100, where L0 represents the length of the tow band having a length of 250 mm when a load of 250 g is applied to the tow band in a direction in which the crimp of the cellulose acetate fiber is extended. L1 represents the length of the tow band when a load of 2500 g is applied to a tow band having a length of 250 mm in the abovementioned direction. [Formula 2] (-11.7+1.2×FD+0.00083×TD)<I (%)<(10.0+1.2×FD+0.00083×TD)

Description

Tow band for smoking goods, filters for smoking goods, smoking goods, and cartridges for smoking goods

This disclosure relates to a toe band for smoking articles, a filter for smoking articles, a smoking article, and a cartridge for smoking articles.

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

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

FD: Single fiber degree (filament denier). FD refers to the fibrousness (grams per 9000 m) of a single fiber (one fiber). FD is also referred to as monofiber denier.

Toe: Refers to an aggregate of multiple filaments discharged from the spinning hole of the spinning cylinder. Ends and yarns are also a form of tow.

Toe band: The toe, which is an aggregate of single fibers discharged from each spinning hole of a plurality of spinning cylinders, is united and the TD is set to a predetermined value. The tow that is united and whose TD is set to a predetermined value is crimped. This crimped toe is a toe band. That is, the tow band has a TD and a number of crimps.

As a material for a smoking article filter used for a combustion-type smoking article that ignites and smokes, and a chip (hereinafter, both are also simply referred to as a filter) used for a cartridge of a heated smoking article that ignites and smokes, for example. Cellulose acetate fibers are used. Cellulose acetate fibers are spun by discharging the undiluted spinning solution from the spinneret, for example, based on the 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 columnar shape, and a rolling paper is wound around the outer circumference. This manufactures the filter.

Titanium oxide is added as a matting agent or a whitening agent in addition to cellulose acetate to the undiluted spinning solution for spinning cellulose acetate fibers, for example, as disclosed in Patent Document 1. Further, as disclosed in Patent Document 2, for example, a titanium compound is added to the undiluted spinning solution for the purpose of improving the spinnability of the cellulose acetate fiber.

Special Table No. 8-500152 Gazette UK Patent Publication No. 949505

In recent years, it has been desired to manufacture a filter using a cellulose acetate fiber that does not substantially contain titanium oxide. Cellulose acetate fibers that do not contain titanium oxide have lower frictional resistance than cellulose acetate fibers that contain titanium oxide. For this reason, a filter made of a tow band containing a cellulose acetate fiber containing no titanium oxide may cause an indentation in which the toe band contracts relative to the wrapping paper from its axial end toward the inside. The invagination reduces the hardness of the filter. The intrusion also reduces the usability when the user holds the filter in his mouth. The intrusion also reduces the appearance quality of the filter.

As a measure to prevent the filter from entering, for example, it is conceivable to increase the amount of tow band packed into the filter. However, the aeration resistance (PD) of the filter increases. This reduces the ease of sucking the filter and the taste that can be enjoyed through the filter.

Therefore, in the present disclosure, in a filter manufactured by using a cellulose acetate fiber that substantially does not contain titanium oxide, the filter is made by preventing the occurrence of invagination and the decrease in hardness while preventing an increase in aeration resistance. The purpose is to improve the quality.

The tow band for smoking articles according to one aspect of the present disclosure contains crimped cellulose acetate fibers, and 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 formula 1 The crimp ratio I (%) calculated by Satisfyes the relationship of Equation 2.
[Equation 1]

Crunch 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 the direction of extending the crimp of the cellulose acetate fiber. 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 direction.
[Equation 2]
(-111.7 + 1.2 × FD + 0.00083 × TD) <I (%) <(10.0 + 1.2 × FD + 0.00083 × TD)

Equation 2 is based on the results examined by the inventors of the present application, and after considering each range of FD and TD that can suppress intrusion when a filter is manufactured using a tow band, winding of the toe band is based on the relationship between FD and TD. It is described so that the reduced ratio I (%) is derived. According to the above configuration, the crimp ratio I (%) of the toe band is set to a value within a predetermined range depending on the relationship between the FD and the TD of the toe band. This suppresses excessive crimping, for example, in a tow band with a relatively large FD and a relatively small TD. Therefore, it is possible to reduce the shrinkage of the tow band after opening the fiber. Therefore, even if the cellulose acetate fiber does not substantially contain titanium oxide, when the filter is manufactured using the tow band, the tow band can be less likely to shrink in the axial direction of the filter with respect to the wrapping paper. As a result, the intrusion of the filter can be prevented. In addition, it is possible to prevent the filter from entering without increasing the amount of tow band packed into the filter. Therefore, it is possible to prevent the ventilation resistance of the filter from increasing. In addition, it is possible to prevent the appearance quality of the filter from deteriorating.

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 10,000 or more and 50,000 or less. By setting the FD to the above value, the rigidity of the cellulose acetate fiber is improved. Therefore, by setting the TD to the above value, for example, when the tow band is packed in a cylindrical filter, the repulsive force given to the wrapping paper by the toe band can be increased while appropriately maintaining the ventilation resistance of the filter. This makes it possible for the toe band to be less likely to slip in the axial direction of the filter with respect to the wrapping paper. As a result, intrusion can be further prevented.

The number of crimps per 10 inch length of the surface may be in the range of 250 or more and 350 or less. As a result, the crimping of the toe band can be maintained in a suitable state. Therefore, when a filter is manufactured using the tow band, a filter in which intrusion is prevented and the ventilation resistance is appropriately set can be manufactured with high quality.

Further, the filter for smoking articles according to one aspect of the present disclosure includes a filter material containing any of the above-mentioned tow bands and formed into a columnar shape, and a rolling paper that wraps around the outer circumference of the filter material. The intrusion of the filter material from the edge of the wrapping paper in the axial direction of the filter material is a value in the range of 1 mm or less.

The filter for smoking articles has a circumference in the range of 15 mm or more and 18 mm or less, and may have a TD in the range of 15,000 or more and 20,000 or less. Alternatively, the filter for smoking articles may have a circumference in the range of 21 mm or more and less than 23 mm, and a TD in the range of 25,000 or more and 30,000 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 of 30,000 or more and 40,000 or less.

Further, the smoking article according to one aspect of the present disclosure is formed into a columnar shape with any of the above-mentioned filters for smoking articles and is arranged on one end side in the axial direction of the filter for smoking articles, and is a base material containing tobacco leaves. And.

Further, the cartridge for smoking articles according to one aspect of the present disclosure includes a substrate containing tobacco leaves, a coolant through which the components generated by heating the substrate pass, and the hollow material that has passed through the hollow material. A coolant for cooling the components and a filter material for filtering a part of the components that have passed through the coolant are provided, and at least one of the hollow material, the coolant, and the filter material is described above. Includes one of the toe bands.

According to the present disclosure, in a filter manufactured using a cellulose acetate fiber that substantially does not contain titanium oxide, the filter is prevented from increasing the aeration resistance, and at the same time, preventing the occurrence of invagination and the decrease in hardness. Can improve the quality of.

It is a schematic diagram of the tow band manufacturing apparatus which concerns on embodiment. It is a schematic diagram of the filter manufacturing apparatus which concerns on embodiment. It is sectional drawing of the heating type smoking article which concerns on embodiment. It is a partial development view of the combustion type smoking article which concerns on embodiment.

The embodiment will be described with reference to the drawings. The term "smoking" referred to herein includes both the case of igniting and smoking, and the case of heating a substrate containing tobacco leaves without igniting and smoking.
(Embodiment)
[Cellulose acetate tow band manufacturing equipment]
FIG. 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. Further, the CA tow band manufacturing apparatus 1 manufactures the yarn 62, the end 63, and the CA tow band 64 by using the CA fiber 61. The CA toe band 64 is a toe band for smoking articles. The CA tow band manufacturing device 1 includes a mixing device 2, a filtration device 3, a spinning unit 4, an oil preparation unit 5, a godet roll 6, a crimping device 7, and a drying device 8.

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

The spinning stock solution 60 is mixed by the mixing device 2 and then filtered by the filtering device 3. The undiluted spinning solution 60 that has passed through the filtration device 3 is supplied to the spinneret 15 arranged on the spinning cylinder 14 of the spinning unit 4. The undiluted spinning solution 60 is discharged from a plurality of spinning holes 15a included in the spinneret 15. The peripheral shape of the spinning hole 15a is, for example, a triangle, but is not limited thereto. The peripheral shape of the spinning hole 15a may be circular as an example. The size of the spinning hole 15a is appropriately set according to the FD of the CA fiber 61 after production.

The spinning stock solution 60 discharged from each spinning hole 15a comes into contact with the hot air supplied into the spinning cylinder 14. The undiluted spinning solution 60 is dried by volatilizing the organic solvent. As a result, the solid CA fiber 61 is formed. A plurality of CA fibers 61 that have passed through one spinning cylinder 14 are focused to form a yarn 62. The yarn 62 is impregnated with the fiber oil by the oil impregnation unit 5, and then wound up by the godet roll 6. The yarn 62 is then picked up by a predetermined take-up device.

In the CA tow band manufacturing apparatus 1, a plurality of yarns 62 are integrated or laminated. As a result, the plurality of yarns 62 are focused to form an end (toe) 63 which is a flat aggregate of the yarns 62. The end 63 has a predetermined TD. The end 63 is conveyed and guided to the crimping device 7.

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

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

Crunch 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 toe 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 toe band 64 when a load of 2500 g is applied to the CA toe band 64 having a length of 250 mm in the above direction.
[Equation 2]
(-111.7 + 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 toe band 64 is set in relation to the FD and TD of the CA toe band 64. By satisfying the relationship of Equation 2, the CA tow band 64 has a value that is in an appropriate range when the CA toe band 64 is used for a filter application while the FD is set to a relatively large value and the TD is set to a relatively small value. The crimp ratio I (%) is set to. That is, the CA tow band 64 suppresses excessive crimping. As a result, the CA tow band 64 is reduced in shrinkage due to crimping after opening. Therefore, when manufacturing a filter using the CA tow band 64, it is possible to reduce the shrinkage of the CA tow band 64 in the axial direction of the filter due to crimping even when the amount of clogging to the filter is not so large.

The FD of the CA tow band 64 can be appropriately set to a value in the range in which Equation 2 is satisfied. As an example of the FD of the CA tow band 64, a value in the range of 10 or more and 30 or less can be exemplified. As another example, as the lower limit of the FD of the CA tow band 64, one of 9.9, 10, 11.8, 19.2, and 20 can be exemplified. Further, as the upper limit value of the FD of the CA tow 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 the range in which Equation 2 is satisfied. As an example of the TD of the CA tow band 64, a value in the range of 10,000 or more and 50,000 or less can be exemplified. As another example, as the lower limit of the TD of the CA tow band 64, one of 10000, 15000, 16800, 17000, 25000, 25700, and 30000 can be exemplified. Further, as the upper limit value of the TD of the CA tow band 64, one of 20,000, 30,000, 40,000, and 50,000, which is larger than the lower limit value, can be exemplified.

In the CA toe band 64, when the FD is 10 and the TD is 10000, the crimp ratio I (%) is a value in the range of 8.6 or more and 30.3 or less. Further, in the CA toe band 64, when the FD is 10 and the TD is 50,000, the crimp ratio I (%) is a value in the range of 41.8 or more and 63.5 or less. Further, in the CA toe band 64, when the FD is 30 and the TD is 10000, the crimp ratio I (%) is a value in the range of 32.6 or more and 54.3 or less. Further, in the CA toe band 64, when the FD is 30 and the TD is 50,000, the crimp ratio I (%) is a value in the range of 65.8 or more and 87.5 or less.

Further, in the CA tow band 64 of the present embodiment, the number of crimps per 10 inch length of the surface is a value in the range of 250 or more and 350 or less. The number of crimps referred to here can be measured, for example, based on the measuring method described in JP-A-7-316975. That is, for example, using a personal computer or an image processing device, an image captured on the surface of the illuminated CA tow band 64 is converted into data having a light intensity level of 256 gradations. Then, the number of crimps can be measured by counting the peaks having a shading level difference of 10 gradations or more as crimps from the data obtained by removing the peak waveform of noise shorter than the cycle of the primary crimp.

As described above, according to the above configuration, the crimp ratio I (%) of the CA toe band 64 is set to a value within a predetermined range depending on the relationship between the FD and the TD of the CA toe band 64. This suppresses excessive crimping, for example, in the CA tow band 64 having a relatively large FD and a relatively small TD. Therefore, it is possible to reduce the shrinkage of the CA tow band 64 after opening the fiber. Therefore, even if the CA fiber 61 does not substantially contain titanium oxide, when the filter is manufactured using the CA tow band 64, the CA tow band 64 can be less likely to shrink in the axial direction of the filter with respect to the wrapping paper. As a result, the intrusion of the filter can be prevented. Further, it is possible to prevent the filter from entering without increasing the amount of the CA tow band 64 packed in the filter. Therefore, it is possible to prevent the ventilation resistance of the filter from increasing. In addition, it is possible to prevent the appearance quality of the filter from deteriorating.

Further, the CA toe band 64 of the present embodiment has a value in the range of FD of 10 or more and 30 or less, and a value of TD in the range of 10,000 or more and 50,000 or less. By setting the FD to the above value, the rigidity of the CA fiber 61 is improved. Therefore, by setting the TD to the above value, for example, when the CA tow band 64 is packed in a columnar filter, the repulsive force given to the wrapping paper by the CA tow band 64 can be increased while appropriately maintaining the ventilation resistance of the filter. .. As a result, the CA tow band 64 can be made less slippery with respect to the wrapping paper in the axial direction of the filter. As a result, intrusion can be further prevented.

Further, in the CA tow band 64 of the present embodiment, the number of crimps per 10 inch length of the surface is a value in the range of 250 or more and 350 or less. As a result, the crimping of the CA tow band 64 can be maintained in a suitable state. Therefore, when a filter is manufactured using the CA tow band 64, it is possible to manufacture a filter in which intrusion is prevented and the ventilation resistance is appropriately set with high quality.

[Filter manufacturing equipment]
FIG. 2 is a schematic view of the filter manufacturing apparatus 20 according to the embodiment. As shown in FIG. 2, the filter manufacturing apparatus 20 includes a focusing ring 21, a first fiber-spreading unit 22, a guide 23, a second fiber-spreading unit 24, a pretension roll pair 25, a first fiber-spreading roll pair 26, and a second fiber-spreading roll. The fiber opening roll pair 27, the third fiber opening unit 28, the plasticizer adhering device 29, the transport roll pair 30, the transport jet 31, the winding tube portion 32, and the cutting device 33 are provided.

In the filter manufacturing apparatus 20, the CA tow band 64 carried up from the packing container 19 passes through the focusing ring 21, and then is opened in the width direction by the pressurized gas in the first fiber opening unit 22. After that, the CA toe band 64 is guided by the guide 23. Next, the CA tow band 64 is further opened in the width direction by the pressurized gas in the second opening roll, and then the pretension roll vs. 25, the first opening roll vs. 26, and the second opening roll. It is inserted in order between vs. 27. As a result, the CA tow band 64 is opened in the transport direction.

The CA tow band 64 that has passed between the second opening rolls and 27 is further opened in the width direction by the pressurized gas in the third opening unit 28. After that, the CA tow band 64 is subjected to the plasticizer by the plasticizer adhering device 29. The CA tow band 64 that has passed through the plasticizer impregnating device 29 is inserted between the transport rolls 30. After that, the CA tow band 64 is introduced into the transport jet 31, and is carried into the winding tube portion 32 by the jet stream.

The winding tube portion 32 has a funnel 41, a tongs 42, and a ganicher 43. The CA tow band 64 carried into the winding tube portion 32 is wound up in the funnel 41 and formed into a columnar shape. As a result, the filter material 65 including the CA tow band 64 and formed into a columnar shape is formed. Further, the rolling paper 40 is guided toward the filter material 65 by the tongs 42. The filter material 65 is conveyed by the ganicher 43, and the rolling paper 40 is wound and fixed around the outer periphery thereof.

The cutting device 33 cuts the filter material 65 to a predetermined size. As a result, the plug (rod) 66 is manufactured. By further cutting the plug 66, a filter 67 including a filter material 65 including a CA tow band 64 and a wrapping paper 40 that winds around the outer circumference of the filter material 65 is manufactured.

As described above, the CA tow band 64 included in the filter 67 has the titanium oxide content 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 Equation 1. (%) Satisfies the relationship of Equation 2. This prevents the filter 67 from invading. Further, in the filter 67, the packing amount of the CA tow band 64 is appropriately set, and the CA tow band 64 is not excessively packed. As a result, the filter 67 has an appropriate airflow resistance.

[Heating smoking goods]
FIG. 3 is a cross-sectional view of the heated smoking article 50 according to the embodiment. The smoking article 50 is a heat-not-burn tobacco. The smoking article 50 is elongated and includes a unit 51 and a replaceable cartridge 52. As an example, the unit 51 includes a housing 53, a heating unit 57 that heats a base material 70 described later of the cartridge 52, a power supply 54 that is a drive source for operation, a display unit 55 that displays information to the user, and a user. It has an operation unit 58 operated by the user and a control unit 56 for controlling the display unit 55 and the heating unit 57.

The cartridge 52 is an aerosol-generating article used for the smoking article 50. The cartridge 52 includes a base material 70, a hollow material 71, a coolant 72, and a chip 73. As an example, the cartridge 52 is formed into a columnar shape. Further, each of the base material 70, the hollow material 71, and the filter material 65 is also formed into a columnar shape. The hollow member 71, the coolant 72, and the chip 73 are integrally wound from the rolling paper 74 in a state of being arranged side by side in the longitudinal direction. When the smoking article 50 is used, the cartridge 52 is inserted into the insertion port 51a formed at the other end in the longitudinal direction of the unit 51. In the cartridge 52 of the present embodiment, at least one of the hollow material 71, the coolant 72, and the chip 73 includes the CA tow band 64. By configuring two or more of the constituent elements 71 to 73 so as to include the CA tow band 64, the material of the cartridge 52 can be standardized. Thereby, the manufacturing efficiency of the cartridge 52 can be improved.

The base material 70 contains tobacco leaves. The substrate 70 contains a tobacco component that can be vaporized by heating. The base material 70 vaporizes the tobacco component by being heated by the heating unit 57 when the smoking article 50 is used. The base material 70 of the present embodiment also contains a flavor component such as nicotine that can be vaporized by heating. The base material 70 is arranged at one end in the longitudinal direction of the cartridge 52 (the insertion side into the insertion port 51a).

The substrate 70 may contain, for example, at least one of tobacco ribs, swollen tobacco, homogenized tobacco, and herbal leaves. These materials are contained in the substrate 70 in the form of solids, liquids, or both solids and liquids, for example in the form of any of the following, such as fragmentary, powdery, threaded, or strip-shaped. You may. If the material is contained as a liquid, the liquid of the material may be encapsulated. Such capsules are heated and melted during use of the smoking article 50.

The flavor component may be retained on a thermally stable carrier. Further, the flavor component may be held on the carrier in any form of a sheet, a foam, a gel, or a slurry. Further, the flavor component may be dispersedly arranged in the base material 70, or may be unevenly distributed at a specific position in the base material 70.

The hollow material 71 is arranged between the base material 70 and the coolant 72. The hollow material 71 is formed in a cylindrical shape. The hollow material 71 allows components generated by heating the base material 70 to pass through the inside. Further, the hollow material 71 functions as a separator that separates the base material 70 and the coolant 72. The hollow material 71 prevents the cartridge 52 from being compressed in the longitudinal direction and the base material 70 from being crushed when the cartridge 52 is inserted into the inside of the unit 51 from the insertion port 51a. The hollow material 71 of the present embodiment includes a CA tow band 64. The hollow material 71 may contain other materials such as polypropylene.

The coolant 72 cools the component that has passed through the hollow material 71. The coolant 72 of the present embodiment generates an aerosol (liquid) by cooling and aggregating the gas component from the base material 70 that has passed through the hollow material 71. The coolant 72 includes, for example, a strip-shaped sheet body wound in the circumferential direction of the cartridge 52, or a strip-shaped sheet body finely folded so that each fold extends in the longitudinal direction of the cartridge 52. In the cooling material 72, an aerosol distribution path is formed by the gaps between the sheets wound or finely folded in this way.

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

The chip 73 filters a part of the component that has passed through the coolant 72. The chip 73 is a filter 67. The chip 73 is arranged on the side opposite to the base material 70 of the cartridge 52. The tip 73 is held by the user when the smoking article 50 is used. The chip 73 filters the aerosol that has passed through the coolant 72.

Here, it is preferable that the smoking comfort of the heated smoking article is close to that of the cigarette, which is a combustion smoking article, for example. Therefore, the chip 73 includes a CA tow band 64 in which a plurality of CA fibers 61 are crimped, similar to a cigarette filter which is a combustion type smoking article.

The dimension of the tip 73 in the insertion direction with respect to the insertion port 51a (hereinafter, referred to as the length dimension of the tip 73) can be appropriately set. The length dimension of the chip 73 is set to a value in the range of, for example, 5 mm or more and 35 mm or less. Further, as the lower limit of the length dimension of the chip 73, for example, one of 5 mm, 7 mm, and 10 mm can be exemplified. Further, as the upper limit of the length dimension of the chip 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 chip 73 can be calculated, for example, by comparing the length dimension of the chip 73 with the length dimension of the filter material 65 whose ventilation resistance is known. The peripheral length of the chip 73 can be appropriately set, but as an example, it is a value in the range of 15 mm or more. As an example, the circumference of the chip 73 can be a value in the range of 16 mm or more and less than 17 mm. As another example, the peripheral length of the chip 73 can be exemplified as a value in the range of 21 mm or more and less than 23 mm. As another example, the peripheral length of the chip 73 can be exemplified as 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 of the unit 51. The control unit 56 controls the power supply circuit so as to heat the heating unit 57 by the electric power from the power source 54. When the heating unit 57 is heated to a predetermined temperature and a predetermined time elapses, the control unit 56 displays to the user that smoking is possible through the display unit 55.

When the user holds the chip 73 and inhales, the gas component from the base material 70 generated by being heated by the heating unit 57 circulates in the hollow material 71. At least a part of the gas component that has passed through the hollow material 71 is cooled and aggregates when flowing through the gaps of the coolant 72. This produces an aerosol. The aerosol that has passed through the coolant 72 is sucked by the user after passing through the chip 73.

Here, in the cartridge 52, the intrusion of the chip 73 is prevented. Therefore, it is possible to prevent the hardness of the chip 73 from being lowered due to the intrusion of the chip 73. As a result, the user can obtain a good feeling of use when the chip 73 is held in the mouth. Further, the deterioration of the appearance quality of the cartridge 52 due to the intrusion of the chip 73 is prevented. Further, the chip 73 is not excessively packed with the CA toe band 64. Therefore, the tip 73 is set to a value at which the ventilation resistance is not too high. This prevents the chip 73 from over-filtering the aerosol. Therefore, the user can obtain a good taste with the cartridge 52.

Further, since the CA toe band 64 is appropriately crimped, the filling amount of the CA toe band 64 is stable in the tip 73. As a result, for example, when the capsule is arranged inside the chip 73, the position of the capsule in the chip 73 is suppressed from fluctuating due to the variation in the density of the CA tow band 64. Therefore, it is possible to easily position the capsule in the chip 73. Further, the chip 73 used in the heated smoking article 50 may have a shorter length than that used in the burning smoking article. In this case, when the chip 73 causes intrusion, the ratio of the intrusion to the length direction of the chip 73 increases. For this reason, defects due to intrusion increase. In the present embodiment, it is possible to satisfactorily prevent problems due to such intrusion.

[Combustion type smoking goods]
FIG. 4 is a partially developed view of the combustion type smoking article 45 of the embodiment. FIG. 4 shows a state in which the winding paper 46 is partially unfolded and the internal configuration of the smoking article 45 is shown. 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 base material 47, a filter (a filter for smoking articles, a cigarette filter) 67, and a cigarette paper 46. The base material 47 has a cigarette filler 48 containing tobacco leaves and a wrapping paper 49 wound around the outer circumference of the cigarette filler 48. The base material 37 is formed into a columnar shape and is arranged at one end in the axial direction of the filter 67. The take-up paper 46 is wound around the outer periphery 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 of 3.0 mm or more and 6.0 mm or less. Examples of the thin cigarette format include, but are not limited to, "super slim" or "ultra super slim". As another example, the format of the cigarette of the smoking article 45 may be, but is not limited to, "Demi Slim" or "Regular".

As an example, the smoking article 45 has a circumference in the range of 15 mm or more and 18 mm or less, and a TD in the range of 15,000 or more and 20,000 or less. Further, as another example, the smoking article 45 has a peripheral length in the range of 21 mm or more and less than 23 mm, and a TD in the range of 25,000 or more and 30,000 or less. Further, as another example, the smoking article 45 has a peripheral length in the range of 23.5 mm or more and 25.5 mm or less, and a TD in the range of 30,000 or more and 40,000 or less. In the filter 67, the intrusion of the filter material 65 from the end of the wrapping paper 40 in the axial direction of the filter material 65 is a value in the range of 1 mm or less. The smoking article 45 is prevented from being invaded by the filter 67 even if it is a thin cigarette, for example. Further, the filter 67 has an appropriate ventilation resistance. Therefore, the ease of smoking of the smoking article 45 is maintained. Further, good filtration performance of the filter 67 can be obtained. This effect is similarly 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, the filter according to the modified example of the embodiment will be described. The filter according to this modification is arranged at one end in the axial direction of the cigar. This filter has a structure similar to that of the chip 73 (filter 67). Cigarillos can be exemplified as the cigar format to which this filter is applied, but the format is not limited to this.

(Confirmation test)
Next, the confirmation test will be described. The present disclosure is not limited to Examples 1 to 4 shown below.
[Test 1]
The CA tow bands and plugs of Examples 1 to 4 and Comparative Examples 1 to 5 were manufactured by the following procedure. 29% by weight of CA flakes of cellulose diacetate was dissolved in an organic solvent (a mixture of acetone and water) to prepare a spinning stock solution 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 spinning caps 15 having a plurality of spinning holes 15a having a triangular peripheral edge shape having a side length of 118 μm. Here, a total of 15 spinners 15 were used. Each spinneret 15 has 145 spinnery holes 15a.

By adjusting the discharge amount from the spinning hole 15a, the winding speed of the winding device for winding the spun CA fiber 61, and the peripheral speed of the pair of nip rolls 16 and 17, the FD is about 10 (measured value 9. In 9), the CA tow band 64 of Example 1 having a TD of about 17,000 (measured value 16800) was manufactured. In the crimping device 7, the crimping ratio I (%) of the CA toe band 64 is set to 25% by adjusting the nip pressure of the pair of nip rolls 16 and 17 and the pushing pressure for pushing the end 63 into the stuffing box 18. did.

Further, 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 the formula 2. The CA tow band 64 of Example 2 was produced by the same method as in Example 1 except for the above. Further, the CA tow band 64 of Example 3 was produced by the same method as in Example 2 except that the crimp ratio I (%) was set to 32%. Further, the CA tow band 64 having an FD of about 20 (measured value 19.2) and a TD of 27,000 (measured value 27,000) was spun, and the crimp ratio I (%) was set to 45%. The CA tow band 64 of Example 4 was produced by the same method.

Further, the CA tow band of Comparative Example 1 was produced by the same method as in Example 1 except that the crimp ratio I (%) of the CA tow band was set to 47%. Further, the CA of Comparative Example 2 was used in the same manner as in Example 2 except that the crimp ratio I (%) of the CA tow band was set to 56% using a mixed solution having a titanium oxide concentration of 0.5% by weight. Manufactured tow band. Further, the CA tow band of Comparative Example 3 was produced by the same method as in Example 2 except that the crimp ratio I (%) of the CA tow band was set to 56%. Further, the CA tow band of Comparative Example 4 was produced by the same method as in Example 2 except that the crimp ratio I (%) of the CA tow band was set to 22%. Further, the CA tow band of Comparative Example 5 was produced by the same method 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 band of Examples 1 to 4 and Comparative Examples 1 to 5 was measured by the above method.

Next, using the CA tow bands of Examples 1 to 4 and Comparative Examples 1 to 5, the filter manufacturing apparatus 20 (Hani Co., Ltd. hoisting machine "KDF-2") immediately before cutting the electronic cigarette chip. It was confirmed whether or not a plug (rod), which is an intermediate body, could be manufactured. As a result, in Comparative Example 4, the crimping of the CA tow band was insufficient, and troubles such as entanglement of CA fibers with the filter manufacturing apparatus 20 occurred, which made it difficult to manufacture the 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 circumference of the plugs of Example 1 and Comparative Example 1 was set to 16.5 mm. The peripheral length of the plugs of Examples 2 to 4 and Comparative Examples 2 to 3 and 5 was set to 22.5 mm. The amount of CA tow band packed into the plugs of Example 1 and Comparative Example 1 (packing amount per unit length of the plug: NTW) was set to 0.29 g / rod. The amount of CA tow band packed into the plugs of Examples 2 to 4 and Comparative Examples 2 to 3 (packing amount per plug length (rod length): NTW) was set to 0.47 g / rod. The amount of CA tow band packed into the plugs of Example 4 and Comparative Example 5 (packing amount per unit length of the tip: NTW) was set to 0.5 g / rod. again,

Further, in each of Examples 1 to 4 and Comparative Examples 1 to 3 and 5, 10 plugs were manufactured, and the appearance abnormality of the plugs was confirmed by the following procedure. First, a plurality of plugs of Examples 1 to 4 and Comparative Examples 1 to 3 and 5 were placed on a table surface having an inclination angle of 45 degrees so that the longitudinal direction was vertically aligned. In this state, the presence or absence of appearance abnormality was confirmed using a microscope with a scale capable of measuring the length dimension of the object. Thereby, the indentation depth of each plug (the intrusion depth of the filter material from the edge 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, the manufactured 10 plugs were cut to a length of 7 mm to manufacture chips. A test cartridge was manufactured by connecting the remaining portion of the chip cut from the "heat stick (registered trademark)" cartridge for "iQOS" manufactured by Philip Morris International Co., Ltd. to each of these chips. 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 Celulean Co., Ltd. Then, the average value of the measured values was calculated. The test results are shown in Tables 1 and 2. Tables 1 and 2 show the average values of the indentation depth of the plug and the ventilation resistance of the aerosol-generating component.

As shown in Table 1, in Examples 1 to 4, the same amount of CA tow band as in Comparative Examples 1 to 3 and 5 is set, but the plug is set as compared with Comparative Examples 1, 3 and 5. It was confirmed that there was little intrusion and the depth of intrusion was 1 mm or less. From this, 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 chip 73 in the cartridge 52 was appropriately set, and the aerosol of the cartridge 52 could be satisfactorily sucked when the smoking article 50 was used. From the above, the superiority of Examples 1 to 4 over Comparative Examples 1 to 5 was confirmed. From the tendency shown by this test result, when the FD of the CA toe band 64 is larger than 19.2 and the value is in the range of 30 or less, and the TD of the CA toe band 64 is larger than 27000 and the value is in the range of 30,000 or less. In addition, it is considered that the same excellent results as in Examples 1 to 5 can be obtained.

Each configuration and its combination in the embodiment is an example, and the configuration can be added, omitted, replaced, and other changes as appropriate within the scope of the present disclosure. The present disclosure is not limited by embodiments, but only by the claims. Also, each aspect disclosed herein can be combined with any other feature disclosed herein.

45 Combustion-type smoking goods 50 Heat-type smoking goods 52 Cartridge 61 CA fiber 64, 164 CA tow band 65 Filter material 67 Filter (filter for smoking goods)
70 Base material 71 Hollow material 72 Coolant 73 Chip (filter)

Claims

Contains crimped cellulose acetate fibers
The titanium oxide content 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 in which the crimp ratio I (%) calculated by the formula 1 satisfies the relationship of the formula 2.
[Equation 1]

Crunch 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 the direction of extending the crimp of the cellulose acetate fiber. 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 direction.
[Equation 2]
(-111.7 + 1.2 × FD + 0.00083 × TD) <I (%) <(10.0 + 1.2 × FD + 0.00083 × TD)
FD is a value in the range of 10 or more and 30 or less.
The tow band for smoking articles according to claim 1, wherein the TD is a value in the range of 10,000 or more and 50,000 or less.
The tow band for smoking articles according to claim 1 or 2, wherein the number of crimps per 10 inch length of the surface is a value in the range of 250 or more and 350 or less.
A filter material containing the tow band according to any one of claims 1 to 3 and formed into a columnar shape, and a filter material.
A rolling paper that wraps around the outer circumference of the filter material is provided.
A filter for smoking articles, wherein the intrusion of the filter material from the edge of the wrapping paper in the axial direction of the filter material is a value in the range of 1 mm or less.
The filter for smoking articles 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 15,000 or more and 20,000 or less.
The filter for smoking articles 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 25,000 or more and 30,000 or less.
The filter for smoking articles 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 30,000 or more and 40,000 or less.
The filter for smoking articles according to any one of claims 4 to 7.
A smoking article, which is formed into a columnar shape and is arranged on one end side in the axial direction of the smoking article filter, and comprises a base material containing tobacco leaves.
Substrate containing tobacco leaves and
A hollow material that allows components generated by heating the base material to pass through inside,
A coolant that cools the components that have passed through the hollow material,
A filter material for filtering a part of the component that has passed through the coolant is provided.
A cartridge for smoking articles, wherein at least one of the hollow material, the coolant, and the filter material contains the tow band according to any one of claims 1 to 3.