EP4085770B1 - Tow band for smoking article, filter for smoking article, smoking article, and cartridge for smoking article - Google Patents

Tow band for smoking article, filter for smoking article, smoking article, and cartridge for smoking article Download PDF

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Publication number
EP4085770B1
EP4085770B1 EP20966187.5A EP20966187A EP4085770B1 EP 4085770 B1 EP4085770 B1 EP 4085770B1 EP 20966187 A EP20966187 A EP 20966187A EP 4085770 B1 EP4085770 B1 EP 4085770B1
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EP
European Patent Office
Prior art keywords
band
filter
smoking article
value
range
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Active
Application number
EP20966187.5A
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German (de)
English (en)
French (fr)
Other versions
EP4085770A1 (en
EP4085770A4 (en
EP4085770C0 (en
Inventor
Tomoharu Miyashita
Masashi Kimura
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Daicel Corp
Original Assignee
Daicel Corp
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Filing date
Publication date
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Publication of EP4085770A1 publication Critical patent/EP4085770A1/en
Publication of EP4085770A4 publication Critical patent/EP4085770A4/en
Application granted granted Critical
Publication of EP4085770B1 publication Critical patent/EP4085770B1/en
Publication of EP4085770C0 publication Critical patent/EP4085770C0/en
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Classifications

    • A—HUMAN NECESSITIES
    • A24—TOBACCO; CIGARS; CIGARETTES; SIMULATED SMOKING DEVICES; SMOKERS' REQUISITES
    • A24D—CIGARS; CIGARETTES; TOBACCO SMOKE FILTERS; MOUTHPIECES FOR CIGARS OR CIGARETTES; MANUFACTURE OF TOBACCO SMOKE FILTERS OR MOUTHPIECES
    • A24D3/00—Tobacco smoke filters, e.g. filter-tips, filtering inserts; Filters specially adapted for simulated smoking devices; Mouthpieces for cigars or cigarettes
    • A24D3/06—Use of materials for tobacco smoke filters
    • A24D3/062—Use of materials for tobacco smoke filters characterised by structural features
    • A24D3/063—Use of materials for tobacco smoke filters characterised by structural features of the fibers
    • A—HUMAN NECESSITIES
    • A24—TOBACCO; CIGARS; CIGARETTES; SIMULATED SMOKING DEVICES; SMOKERS' REQUISITES
    • A24D—CIGARS; CIGARETTES; TOBACCO SMOKE FILTERS; MOUTHPIECES FOR CIGARS OR CIGARETTES; MANUFACTURE OF TOBACCO SMOKE FILTERS OR MOUTHPIECES
    • A24D3/00—Tobacco smoke filters, e.g. filter-tips, filtering inserts; Filters specially adapted for simulated smoking devices; Mouthpieces for cigars or cigarettes
    • A24D3/06—Use of materials for tobacco smoke filters
    • A24D3/08—Use of materials for tobacco smoke filters of organic materials as carrier or major constituent
    • A24D3/10—Use of materials for tobacco smoke filters of organic materials as carrier or major constituent of cellulose or cellulose derivatives
    • A—HUMAN NECESSITIES
    • A24—TOBACCO; CIGARS; CIGARETTES; SIMULATED SMOKING DEVICES; SMOKERS' REQUISITES
    • A24D—CIGARS; CIGARETTES; TOBACCO SMOKE FILTERS; MOUTHPIECES FOR CIGARS OR CIGARETTES; MANUFACTURE OF TOBACCO SMOKE FILTERS OR MOUTHPIECES
    • A24D1/00—Cigars; Cigarettes
    • A24D1/04—Cigars; Cigarettes with mouthpieces or filter-tips
    • A24D1/045—Cigars; Cigarettes with mouthpieces or filter-tips with smoke filter means
    • A—HUMAN NECESSITIES
    • A24—TOBACCO; CIGARS; CIGARETTES; SIMULATED SMOKING DEVICES; SMOKERS' REQUISITES
    • A24D—CIGARS; CIGARETTES; TOBACCO SMOKE FILTERS; MOUTHPIECES FOR CIGARS OR CIGARETTES; MANUFACTURE OF TOBACCO SMOKE FILTERS OR MOUTHPIECES
    • A24D1/00—Cigars; Cigarettes
    • A24D1/20—Cigarettes specially adapted for simulated smoking devices
    • A—HUMAN NECESSITIES
    • A24—TOBACCO; CIGARS; CIGARETTES; SIMULATED SMOKING DEVICES; SMOKERS' REQUISITES
    • A24D—CIGARS; CIGARETTES; TOBACCO SMOKE FILTERS; MOUTHPIECES FOR CIGARS OR CIGARETTES; MANUFACTURE OF TOBACCO SMOKE FILTERS OR MOUTHPIECES
    • A24D3/00—Tobacco smoke filters, e.g. filter-tips, filtering inserts; Filters specially adapted for simulated smoking devices; Mouthpieces for cigars or cigarettes
    • A24D3/02—Manufacture of tobacco smoke filters
    • A24D3/0204—Preliminary operations before the filter rod forming process, e.g. crimping, blooming
    • A—HUMAN NECESSITIES
    • A24—TOBACCO; CIGARS; CIGARETTES; SIMULATED SMOKING DEVICES; SMOKERS' REQUISITES
    • A24D—CIGARS; CIGARETTES; TOBACCO SMOKE FILTERS; MOUTHPIECES FOR CIGARS OR CIGARETTES; MANUFACTURE OF TOBACCO SMOKE FILTERS OR MOUTHPIECES
    • A24D3/00—Tobacco smoke filters, e.g. filter-tips, filtering inserts; Filters specially adapted for simulated smoking devices; Mouthpieces for cigars or cigarettes
    • A24D3/02—Manufacture of tobacco smoke filters
    • A24D3/0275—Manufacture of tobacco smoke filters for filters with special features
    • A24D3/0279—Manufacture of tobacco smoke filters for filters with special features with tubes
    • A—HUMAN NECESSITIES
    • A24—TOBACCO; CIGARS; CIGARETTES; SIMULATED SMOKING DEVICES; SMOKERS' REQUISITES
    • A24D—CIGARS; CIGARETTES; TOBACCO SMOKE FILTERS; MOUTHPIECES FOR CIGARS OR CIGARETTES; MANUFACTURE OF TOBACCO SMOKE FILTERS OR MOUTHPIECES
    • A24D3/00—Tobacco smoke filters, e.g. filter-tips, filtering inserts; Filters specially adapted for simulated smoking devices; Mouthpieces for cigars or cigarettes
    • A24D3/04—Tobacco smoke filters characterised by their shape or structure
    • A—HUMAN NECESSITIES
    • A24—TOBACCO; CIGARS; CIGARETTES; SIMULATED SMOKING DEVICES; SMOKERS' REQUISITES
    • A24D—CIGARS; CIGARETTES; TOBACCO SMOKE FILTERS; MOUTHPIECES FOR CIGARS OR CIGARETTES; MANUFACTURE OF TOBACCO SMOKE FILTERS OR MOUTHPIECES
    • A24D3/00—Tobacco smoke filters, e.g. filter-tips, filtering inserts; Filters specially adapted for simulated smoking devices; Mouthpieces for cigars or cigarettes
    • A24D3/04—Tobacco smoke filters characterised by their shape or structure
    • A24D3/043—Tobacco smoke filters characterised by their shape or structure with ventilation means, e.g. air dilution
    • A—HUMAN NECESSITIES
    • A24—TOBACCO; CIGARS; CIGARETTES; SIMULATED SMOKING DEVICES; SMOKERS' REQUISITES
    • A24D—CIGARS; CIGARETTES; TOBACCO SMOKE FILTERS; MOUTHPIECES FOR CIGARS OR CIGARETTES; MANUFACTURE OF TOBACCO SMOKE FILTERS OR MOUTHPIECES
    • A24D3/00—Tobacco smoke filters, e.g. filter-tips, filtering inserts; Filters specially adapted for simulated smoking devices; Mouthpieces for cigars or cigarettes
    • A24D3/06—Use of materials for tobacco smoke filters
    • A24D3/16—Use of materials for tobacco smoke filters of inorganic materials

Definitions

  • the present invention relates to a band for a smoking article, a filter for a smoking article, a smoking article, and a cartridge for a smoking article.
  • TD total fineness (total denier). TD refers to the fineness (grams per 9000 m) of a tow assembly (band).
  • FD denier per filament (filament denier). FD refers to the fineness (grams per 9000 m) of a single fiber (one fiber). FD is also referred to as denier per filament.
  • Tow a plurality of filament assemblies discharged from a spinneret hole of a cabinet. An end and a yarn are each an aspect of the tow.
  • Band which are assemblies of single fibers, discharged from each spinneret hole of a plurality of cabinets are bundled, and the TD is set to a predetermined numerical value.
  • the bundled tow in which the TD is set to a predetermined numerical value is crimped.
  • This crimped tow is a band. That is, the band has a TD and a number of crimps.
  • cellulose acetate fibers are used as a material for a filter for a smoking article used in a combusted smoking article that is ignited and smoked, or a tip used in a cartridge of a heated smoking article that is heated and smoked (hereinafter, both the filter and the tip are also simply referred to as "filter”).
  • the cellulose acetate fibers are spun by discharging spinning dope from a spinneret based on dry spinning, for example.
  • a band is produced by crimping a plurality of cellulose acetate fibers. This band is opened and molded into a cylindrical shape, and winding paper is wound around the outer periphery. This produces a filter.
  • titanium oxide is added as a matting agent or a whitening agent to a spinning dope for spinning cellulose acetate fibers, as disclosed in JP H08 500152 A , for example.
  • a titanium compound is added to the spinning dope for the purpose of improving the spinnability of cellulose acetate fibers.
  • JP 2019 015009 A proposes a cellulose acetate tow band composed of cellulose acetate fibers, wherein the total denier is set at a value in a range of 8000 or more and 44000 or less.
  • the content of titanium oxide is set at a value in a range of 0 wt.% or more and 0.01 wt.% or less.
  • a content of textile lubricant that is measured using a method for extracting diethyl ether of tow band is set at a value in a range of more than 5 mg and 65 mg or less per 1 m.
  • JP 2020 188811 A discloses an electronic cigarette cartridge to be inserted into an electronic cigarette body having a heating element.
  • Said cartridge comprises an aerosol-forming base material, a mouthpiece and a sheet positioned between the aerosol-forming base material and the mouthpiece and wound in a direction perpendicular to the longitudinal direction of the cartridge.
  • One measure for preventing indentation of the filter is to increase the amount of stuffing of the band in the filter, for example.
  • the pressure drop (PD) of the filter increases. This reduces ease of sucking through the filter and taste through the filter.
  • an object of the present invention is to improve the quality of a filter produced using cellulose acetate fibers not substantially containing titanium oxide, by preventing indentation and a reduction in hardness while preventing an increase in pressure drop.
  • Equation 2 is described such that the crimp ratio I (%) of the band is derived from the relationship between FD and TD in consideration of the ranges of FD and TD with which indentation can be suppressed when the filter is produced using the band based on the result studied by the inventors of the present application.
  • the crimp ratio I (%) of the band is set to a value in a predetermined range according to the relationship between FD and TD of the band. This suppresses excessive crimp in a band in which FD is relatively large and TD is relatively small, for example. This makes it possible to decrease shrinkage of the band after opening.
  • the band can be hardly shrunk in the axial direction of the filter with respect to the winding paper.
  • indentation of the filter can be prevented. Indentation of the filter can be prevented even without increasing the amount of stuffing of the band in the filter. This makes it possible to prevent pressure drop of the filter from increasing. It is also possible to prevent the appearance of the filter from degrading.
  • FD may have a value in a range equal to or less than 30, and TD may have a value in a range from 10000 to 50000.
  • FD the rigidity of the cellulose acetate fibers is improved. Therefore, by setting TD to the above value, when the band is stuffed in a cylindrical filter, for example, it is possible to increase the repulsive force that the band gives to the winding paper, while appropriately retaining the pressure drop of the filter. This makes it possible to make the band less slippery in the axial direction of the filter with respect to the winding paper. As a result, indentation can be further prevented.
  • a number of crimps per 25.4 cm (10 inch) length of a surface of the band may be a value in a range from 250 to 350. This makes it possible to retain crimping of the band in a suitable state. Therefore, when a filter is produced using the band, it is possible to produce a filter in which indentation is prevented and pressure drop is appropriately set, at a high quality.
  • a filter for a smoking article according to the present invention comprises: a filter material including any of the bands described above, the filter material being molded into a cylindrical shape; and winding paper wound around an outer periphery of the filter material, wherein indentation of the filter material from an end of the winding paper in an axial direction of the filter material has a value in a range equal to or less than 1 mm.
  • a perimeter of the filter for a smoking article may have a value in a range from 15 mm to 18 mm, and TD may be a value in a range from 15000 to 20000.
  • a perimeter of the filter for a smoking article may have a value in a range from 21 mm to less than 23 mm, and TD may be a value in a range from 25000 to 30000.
  • a perimeter of the filter for a smoking article may have a value in a range from 23.5 mm to 25.5 mm, and TD may be a value in a range from 30000 to 40000.
  • a smoking article according to the present invention comprises any of the filters for a smoking article described above, and a base member including tobacco leaf, the base member being molded into a cylindrical shape and disposed on one axial end side of the filter.
  • a cartridge for a smoking article according to the present invention comprises a base member including tobacco leaf, a hollow member configured such that a constituent generated by heating the base member passes through the hollow member, a coolant that cools the constituent having passed through the hollow member, and a filter material that filters a part of the constituent having passed through the coolant, wherein at least any of the hollow member, the coolant, or the filter material includes the band described above.
  • the present invention it is possible to improve the quality of a filter produced using cellulose acetate fibers not substantially containing titanium oxide, by preventing indentation and a reduction in hardness while preventing an increase in pressure drop.
  • FIG. 1 is a schematic view of a cellulose acetate (hereinafter, also referred to as "CA") band production apparatus 1.
  • the CAband production apparatus 1 continuously spins CA fibers 61, which is a long fiber, by dry spinning. Using the CA fibers 61, the CAband production apparatus 1 produces a yarn 62, an end 63, and a CA band 64.
  • the CA band 64 is a band for a smoking article.
  • the CAband production apparatus 1 includes a mixing device 2, a filtering device 3, a spinning unit 4, a lubrication unit 5, godet rolls 6, a crimping apparatus 7, and a drying device 8.
  • a spinning dope 60 in which cellulose acetate flakes made of, for example, cellulose diacetate are dissolved in an organic solvent at a predetermined concentration is used.
  • This spinning dope 60 does not substantially contain titanium oxide.
  • the titanium oxide concentration of the spinning dope 60 has a value in a range where the content of titanium oxide in each CA fiber 61 to be spun is from 0 wt.% to 0.01 wt.%.
  • the spinning dope 60 is mixed using the mixing device 2, and then filtered by the filtering device 3.
  • the spinning dope 60 having passed through the filtering device 3 is supplied to a spinneret 15 arranged on a cabinet 14 of the spinning unit 4.
  • the spinning dope 60 is discharged from a plurality of spinneret holes 15a of the spinneret 15.
  • the peripheral edge shape of the spinneret hole 15a is triangular as an example, but is not limited to this.
  • the peripheral edge shape of the spinneret hole 15a may be circular as an example.
  • the size of the spinneret hole 15a is appropriately set according to the FD of the CA fiber 61 after production.
  • the spinning dope 60 discharged from each spinneret hole 15a comes into contact with hot air supplied into the cabinet 14.
  • the spinning dope 60 is dried by volatilization of the organic solvent. Due to this, CA fibers 61 as a solid are formed.
  • the plurality of CA fibers 61 having passed through one cabinet 14 are collected to form the yarn 62.
  • the yarn 62 is wound by the godet rolls 6.
  • the yarn 62 is then taken up by a predetermined winding device.
  • a plurality of the yarns 62 are accumulated or layered. This causes the plurality of yarns 62 to be collected to form the end (tow) 63, which is a flat assembly of the yarns 62.
  • the end 63 has a predetermined TD. The end 63 is conveyed and guided to the crimping apparatus 7.
  • the crimping apparatus 7 includes a pair of nip rolls 16, 17 and a stuffing box 18.
  • the end 63 is pressed into the stuffing box 18 after nip pressure is applied at nip points of the pair of nip rolls 16, 17. Due to this, the end 63 is crimped to produce the CAband 64.
  • the CAband 64 having passed through the crimping apparatus 7 is dried and accumulated by the drying device 8. Thereafter, the CAband 64 is compressed and packed into a packing container 19 in the form of a bale.
  • Equation 2 shows that the crimp ratio I (%) of the CA band 64 is set in relation to the FD and the TD of the CA band 64.
  • the crimp ratio I (%) is set to a value that falls within an appropriate range in a case where the CA 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 by satisfying the relationship of Equation 2. That is, the CAband 64 is less likely to be excessively crimped. Due to this, the CAband 64 shrinks less due to crimping after opening. Therefore, when the filter is produced using the CA band 64, the CAband 64 shrinks less in the axial direction of the filter due to crimping even in a case where the amount of stuffing in the filter is not so large.
  • the FD of the CA band 64 can be set to any value in a range where Equation 2 is satisfied.
  • An example of the FD of the CAband 64 is a value in a range from 10 to 30.
  • one of 9.9, 10, 11.8, 19.2, and 20 is an example of the lower limit value of the FD of the CAband 64.
  • the TD of the CA band 64 can be set to any value in a range where Equation 2 is satisfied.
  • An example of the TD of the CA band 64 is a value in a range from 10000 to 50000.
  • one of 10000, 15000, 16800, 17000, 25000, 25700, and 30000 is an example of the lower limit value of the TD of the CA band 64.
  • the crimp ratio I (%) is a value in a range from 8.6 to 30.3.
  • the crimp ratio I (%) is a value in a range from 41.8 to 63.5.
  • the crimp ratio I (%) is a value in a range from 32.6 to 54.3.
  • the crimp ratio I (%) is a value in a range from 65.8 to 87.5.
  • the number of crimps per 10 inch length of the surface is a value in a range from 250 to 350.
  • the number of crimps mentioned here can be measured based on the measurement method described in JP H7-316975 A , for example. That is, a personal computer or an image processing device, for example, is used to convert a captured image of the illuminated surface of the CA band 64 into data with a light amount level of 256 gradations. Then, the number of crimps can be measured by counting, as crimps, peaks having a gray level difference of 10 or greater gradations among the data from which a peak waveform of noise shorter than a cycle of a primary crimp has been removed.
  • the crimp ratio I (%) of the CA band 64 is set to a value in a predetermined range according to the relationship between the FD and the TD of the CAband 64. This suppresses excessive crimping in the CA band 64 in which the FD is relatively large and the TD is relatively small, for example. This makes it possible to decrease shrinkage of the CA band 64 after opening. Therefore, even if the CA fibers 61 do not substantially contain titanium oxide, when the filter is produced using the CA band 64, the CA band 64 is less likely to shrink in the axial direction of the filter with respect to the winding paper. As a result, indentation of the filter can be prevented. Indentation of the filter can be prevented even without increasing the amount of stuffing of the CA band 64 in the filter. This makes it possible to prevent an increase in pressure drop of the filter. It is also possible to prevent the appearance of the filter from degrading.
  • the FD is a value in a range from 10 to 30 and the TD is a value in a range from 10000 to 50000.
  • the rigidity of the CA fibers 61 is improved. Therefore, by setting the TD to the above value, when the CA band 64 is stuffed into a cylindrical filter, for example, it is possible to increase the repulsive force that the CAband 64 gives to the winding paper while appropriately retaining the pressure drop of the filter. This makes it possible to make the CA band 64 less slippery in the axial direction of the filter with respect to the winding paper. As a result, indentation can be further prevented.
  • the number of crimps per 10 inch length of the surface is a value in a range from 250 to 350. This makes it possible to retain the crimp of the CAband 64 in a suitable state. Therefore, when a filter is produced using the CA band 64, it is possible to produce a filter in which indentation is prevented and pressure drop is appropriately set, at a high quality.
  • FIG. 2 is a schematic view of a filter production apparatus 20 according to an embodiment.
  • the filter production apparatus 20 includes a collection ring 21, a first opening unit 22, a guide 23, a second opening unit 24, a pre-tension roll pair 25, a first opening roll pair 26, a second opening roll pair 27, a third opening unit 28, a plasticizer application apparatus 29, a conveying roll pair 30, a transport jet 31, a transport stuffer unit 32, and a cutting device 33.
  • the CAband 64 drawn up from inside the packing container 19 passes through the collection ring 21, and then is opened in the width direction by pressurized gas in the first opening unit 22. Thereafter, the CA band 64 is guided by the guide 23. Next, the CAband 64 is opened further in the width direction by pressurized gas in the second opening unit 24, and then sequentially inserted between the pre-tension roll pair 25, between the first opening roll pair 26, and between the second opening roll pair 27. Due to this, the CAband 64 is opened in a conveyance direction.
  • the CA band 64 having passed between the second opening roll pair 27 is opened further in the width direction by pressurized gas in the third opening unit 28. Thereafter, a plasticizer is applied to the CAband 64 by the plasticizer application apparatus 29.
  • the CA band 64 having passed through the plasticizer application apparatus 29 is inserted between the conveying roll pair 30. Thereafter, the CAband 64 is introduced into the transport jet 31 and carried into the transport stuffer unit 32 by a jet stream.
  • the transport stuffer unit 32 has a funnel 41, a tongue 42, and a garniture 43.
  • the CA band 64 transported into the transport stuffer unit 32 is wound at the funnel 41 and molded into a cylindrical shape.
  • a filter material 65 including the CAband 64 and molded into a cylindrical shape is formed.
  • a winding paper 40 is guided toward the filter material 65 by the tongue 42.
  • the filter material 65 is conveyed by the garniture 43, and the winding paper 40 is wound and fixed around the outer periphery of the filter material 65.
  • the cutting device 33 cuts the filter material 65 into a predetermined dimension. Thus, a plug (rod) 66 is produced. The plug 66 is further cut to produce a filter 67 that includes the filter material 65 including the CAband 64 and the winding paper 40 wound around the outer periphery of the filter material 65 is produced.
  • the content of titanium oxide is set to a value in a range from 0 wt.% to 0.01 wt.%, and the crimp ratio I (%) calculated by Equation 1 satisfies the relationship of Equation 2.
  • the filter 67 is prevented from indentation.
  • the stuffing amount of the CA band 64 is appropriately set, and an appropriate amount of the CAband 64 is used for stuffing. Due to this, the filter 67 has an appropriate pressure drop.
  • FIG. 3 is a cross-sectional view of a heated smoking article 50 according to an embodiment.
  • This smoking article 50 is a heated tobacco product.
  • the smoking article 50 has a long shape and includes a unit 51 and a replaceable cartridge 52.
  • the unit 51 includes an enclosure 53, a heating unit 57 that heats a base member 70 (described later) of the cartridge 52, a power supply 54 that is an operation drive source, a display unit 55 that displays information to a user, an operation unit 58 operated by the user, and a control unit 56 that controls the display unit 55 and the heating unit 57.
  • the cartridge 52 is an aerosol generation article used in the smoking article 50.
  • the cartridge 52 includes the base member 70, a hollow member 71, a coolant 72, and a tip 73.
  • the cartridge 52 is molded into a cylindrical shape.
  • the base member 70, the hollow member 71, and the filter material 65 are each also molded into a cylindrical shape.
  • the hollow member 71, the coolant 72, and the tip 73 are integrally wound from a winding paper 74 in a state of being arranged side by side in the longitudinal direction.
  • the cartridge 52 is inserted into an insertion port 51a formed at the other longitudinal end of the unit 51.
  • At least any of the hollow member 71, the coolant 72, or the tip 73 includes the CA band 64.
  • the materials of the cartridge 52 can be made common. This makes it possible to improve the production efficiency of the cartridge 52.
  • the base member 70 includes tobacco leaf.
  • the base member 70 contains a tobacco constituent that can be vaporized by heating.
  • the base member 70 vaporizes the tobacco constituent by being heated by the heating unit 57 when the smoking article 50 is in use.
  • the base member 70 of the present embodiment also contains a flavor constituent such as nicotine that can be vaporized by heating.
  • the base member 70 is disposed at one longitudinal end of the cartridge 52 (the insertion side to the insertion port 51a).
  • the base member 70 may include, for example, at least any of tobacco rib, expanded tobacco, homogenized tobacco, and herb leaf. These materials may be contained in the base member 70 in the form of a solid being any of fine fragments, a powder, a thread, or a band, in the form of a liquid, or in the form of both a solid and a liquid. When the material is contained as a liquid, the liquid of the material may be enclosed in a capsule. Such a capsule is heated and melted when the smoking article 50 is in use.
  • the flavor constituent may be carried on a thermally stable carrier.
  • the flavor constituent may be carried on the carrier in the form of a sheet, foam, gel, or slurry.
  • the flavor constituent may be dispersed in the base member 70, or may be unevenly distributed at specific positions in the base member 70.
  • the hollow member 71 is disposed between the base member 70 and the coolant 72.
  • the hollow member 71 is formed into a cylindrical shape.
  • the hollow member 71 is configured such that a constituent generated by heating the base member 70 passes through the hollow member 71.
  • the hollow member 71 functions as a separator that separates the base member 70 and the coolant 72.
  • the hollow member 71 prevents the cartridge 52 from being compressed in the longitudinal direction and the base member 70 from being crushed when the cartridge 52 is inserted into the unit 51 from the insertion port 51a.
  • the hollow member 71 of the present embodiment includes the CA band 64.
  • the hollow member 71 may contain other materials such as polypropylene.
  • the coolant 72 cools the constituent having passed through the hollow member 71.
  • the coolant 72 of the present embodiment generates an aerosol (liquid) by cooling and aggregating a gas constituent from the base member 70 that has passed through the hollow member 71.
  • the coolant 72 includes, for example, a band-like sheet body wound in the circumferential direction of the cartridge 52 or a band-like sheet body finely folded with each fold extending in the longitudinal direction of the cartridge 52. In the coolant 72, a circulation path for the aerosol is formed by gaps in the sheet body thus wound or finely folded.
  • the coolant 72 of the present embodiment includes the CA band 64.
  • the coolant 72 may contain one or more of, for example, polyethylene, polypropylene, polyvinyl chloride, high-strength polyethylene terephthalate (polyethylene terephthalate copolymer) (PETG), polylactic acid, and starch-based polyester.
  • the sheet body of the coolant 72 may be made of a material of any of porous paper, aluminum foil, or the like.
  • the tip 73 filters a part of the constituent having passed through the coolant 72.
  • the tip 73 is the filter 67.
  • the tip 73 is disposed on the cartridge 52 on the side opposite to the base member 70. The tip 73 is put in the user's mouth when the smoking article 50 is in use.
  • the tip 73 filters the aerosol having passed through the coolant 72.
  • smoking comfort of a heated smoking article is preferably close to smoking comfort of, for example, a cigarette, which is a combusted smoking article. Therefore, the tip 73 includes the CA band 64 in which the plurality of CA fibers 61 are crimped, similar to a filter of a cigarette, which is a combusted smoking article.
  • the dimension of the tip 73 in the insertion direction with respect to the insertion port 51a (hereinafter, referred to as "length dimension of the tip 73") can be appropriately set.
  • the length dimension of the tip 73 is set to a value in a range of, for example, from 5 mm to 35 mm.
  • One of 5 mm, 7 mm, or 10 mm is an example of the lower limit value of the length dimension of the tip 73, for example.
  • One of 17 mm, 20 mm, 25 mm, 28 mm, 30 mm, or 35 mm is an example of the upper limit value of the length dimension of the tip 73.
  • the pressure drop of the tip 73 is proportional to the length dimension of the tip 73.
  • the pressure drop of the tip 73 can be calculated, for example, by comparing the length dimension of the tip 73 with the length dimension of the filter material 65, which has a known pressure drop.
  • the perimeter of the tip 73 can be set as appropriate, and is, as an example, a value in a range of equal to or greater than 15 mm.
  • a value in a range from 16 mm to less than 17 mm is an example of the perimeter of the tip 73.
  • a value in a range from 21 mm to less than 23 mm is an example of the perimeter of the tip 73.
  • a value in a range from 23.5 mm to 25.5 mm is an example of the perimeter of the tip 73.
  • the user 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 a 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 notifies the user that smoking is possible via the display unit 55.
  • a gas component from the base member 70 generated by being heated by the heating unit 57 circulates through the hollow member 71. At least some of the gas component having passed through the hollow member 71 is cooled and aggregated when circulating through the gaps of the coolant 72. This generates an aerosol. The aerosol having passed through the coolant 72 is sucked by the user after passing through the tip 73.
  • indentation of the tip 73 is prevented. This prevents the hardness of the tip 73 from being reduced due to indentation of the tip 73. This allows the user to experience good usability when holding the tip 73 in the mouth. Further, degradation of the appearance of the cartridge 52 due to the indentation of the tip 73 is prevented.
  • an appropriate amount of the CAband 64 is used for stuffing. Therefore, the pressure drop of the tip 73 is set to a value that is not too high. This prevents the tip 73 from excessively filtering the aerosol. Therefore, the user can experience a good taste due to the cartridge 52.
  • the stuffing amount of the CA band 64 is stable in the tip 73. Due to this, for example, when a capsule is disposed inside the tip 73, the position of the capsule in the tip 73 is less likely to change due to a variation in density of the CAband 64. Therefore, the capsule can be easily positioned in the tip 73.
  • the tip 73 used in the heated smoking article 50 has a shorter length dimension than when used in a combusted smoking article. In this case, when the tip 73 has indentation, the proportion of the indentation in the length direction of the tip 73 increases. Therefore, a defect due to the indentation increases. In the present embodiment, such a defect due to indentation can be satisfactorily prevented.
  • FIG. 4 is a partially expanded view of a combusted smoking article 45 of an embodiment.
  • FIG. 4 illustrates a state in which rolling paper 46 is partially expanded to show the internal configuration of the smoking article 45.
  • the smoking article 45 illustrated in FIG. 4 is ignited and smoked.
  • the smoking article 45 of the present embodiment is a cigarette.
  • the smoking article 45 includes a base member 47, the filter (filter for a smoking article, or cigarette filter) 67, and the rolling paper 46.
  • the base member 47 includes a cigarette filler 48 containing tobacco leaf and winding paper 49 wound around an outer periphery of the cigarette filler 48.
  • the base member 37 is molded into a cylindrical shape and is disposed at one axial end of the filter 67.
  • the rolling paper 46 is wound over the outer periphery of the base member 47 and the filter 67 in a state where the base member 47 and the filter 67 are arranged side by side in the longitudinal direction.
  • the smoking article 45 is a thin cigarette, as an example, and has a diameter from 3.0 mm to 6.0 mm.
  • As the format of the thin cigarette “super slim” or “ultra super slim” are examples, but the format is not limited to this.
  • “demi slim” or “regular” are examples, but the format is not limited to this.
  • the smoking article 45 has a perimeter of a value in a range from 15 mm to 18 mm and a TD of a value in a range from 15000 to 20000.
  • the smoking article 45 has a perimeter of a value in a range from 21 mm to less than 23 mm and a TD of a value in a range from 25000 to 30000.
  • the smoking article 45 has a perimeter of a value in a range from 23.5 mm to 25.5 mm and a TD of a value in a range from 30000 to 40000.
  • indentation of the filter material 65 from an end of the winding paper 40 in an axial direction of the filter material 65 has a value in a range of equal to or less than 1 mm.
  • the smoking article 45 is prevented from indentation in the filter 67, even when configured as a thin cigarette, for example.
  • the filter 67 has appropriate pressure drop. Therefore, ease of smoking the smoking article 45 at the time of smoking is retained. Further, good filtration performance of the filter 67 is obtained. This effect is similarly obtained even when the smoking article 45 is a cigarette having a certain diameter.
  • the smoking article 45 may be an article other than a cigarette.
  • the filter according to the present modification is disposed at one axial end of a cigar.
  • This filter has a similar structure to the tip 73 (filter 67).
  • a cigarillo is an example, but the format is not limited to this.
  • a CA band and a plug of Examples 1 to 4 and Comparative Examples 1 to 5 were produced by the following procedure. 29 wt.% of CA flakes of cellulose diacetate were dissolved in an organic solvent (acetone and water mixture) to prepare the spinning dope 60 having a titanium oxide concentration of 0 wt.%.
  • the CA fiber 61 (Y-shaped cross section) of Example 1 was spun using the plurality of spinnerets 15 formed with the plurality of spinneret holes 15a each having a triangular peripheral edge shape with a side length of 118 ⁇ m. Here, a total of 15 spinnerets 15 were used.
  • the spinneret 15 has 145 spinneret holes 15a per spinneret.
  • the CA band 64 of Example 1 having a FD of about 10 (actual measurement value 9.9) and a TD of about 17000 (actual measurement value 16800) was produced by adjusting the discharge amount from the spinneret holes 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 crimp ratio I (%) of the CA band 64 was set to 25% by adjusting the nip pressure of the pair of nip rolls 16 and 17 and the pressing force of pressing the end 63 into the stuffing box 18.
  • the CA band 64 of Example 2 was produced by a similar method to that in Example 1 except that the CA band 64 having a FD of about 12 (actual measurement value 11.8) and a TD of about 25000 (actual measurement value 25700) was spun, and the crimp ratio I (%) was set to 43% based on Equation 2.
  • the CA band 64 of Example 3 was produced by a similar method to that in Example 2 except that the crimp ratio I (%) was set to 32%.
  • the CA band 64 of Example 4 was produced by a similar method to that in Example 1 except that the CA band 64 having a FD of about 20 (actual measurement value 19.2) and a TD of 27000 (actual measurement value 27000) was spun, and the crimp ratio I (%) thereof was set to 45%.
  • the CA band of Comparative Example 1 was produced by a similar method to that in Example 1 except that the crimp ratio I (%) of the CA band was set to 47%.
  • the CA band of Comparative Example 2 was produced by a similar method to that in Example 2 except that a mixed solution having a titanium oxide concentration of 0.5 wt.% was used and the crimp ratio I (%) of the CAband was set to 56%.
  • the CA band of Comparative Example 3 was produced by a similar method to that in Example 2 except that the crimp ratio I (%) of the CA band was set to 56%.
  • the CA band of Comparative Example 4 was produced by a similar method to that in Example 2 except that the crimp ratio I (%) of the CA band was set to 22%.
  • the CA band of Comparative Example 5 was produced by a similar method to that in Example 4 except that the crimp ratio I (%) of the CA band was set to 66%.
  • the number of crimps per 10 inch length of the CA bands of Examples 1 to 4 and Comparative Examples 1 to 5 were measured by the method described above.
  • the length dimensions of the plugs of Examples 1 to 4 and Comparative Examples 1 to 3 and 5 were set to 120 mm.
  • the perimeters of the plugs of Example 1 and Comparative Example 1 were set to 16.5 mm.
  • the perimeters of the plugs of Examples 2 to 4 and Comparative Examples 2, 3, and 5 were set to 22.5 mm.
  • the amount of stuffing of the CAband into the plugs of Example 1 and Comparative Example 1 was set to 0.29 g/rod.
  • the amount of stuffing of the CA band into the plugs of Examples 2 to 4 and Comparative Examples 2 and 3 (stuffing amount per plug length (rod length): NTW) was set to 0.47 g/rod.
  • the amount of stuffing of the CA band into the plugs of Example 4 and Comparative Example 5 was set to 0.5 g/rod. Further,
  • each of Examples 1 to 4 and Comparative Examples 1 to 3 and 5 ten plugs were produced, and an appearance abnormality of the plug was confirmed by the following procedure.
  • the plurality of plugs in each of Examples 1 to 4 and Comparative Examples 1 to 3 and 5 were placed on a base surface with an inclination angle of 45 degrees such that the longitudinal direction was along the vertical direction.
  • the presence or absence of an appearance abnormality was confirmed using a microscope with a scale capable of measuring the length dimension of the object.
  • the indentation depth of each plug (the indentation depth of the filter material from the end of the winding paper in the axial direction of the filter material) was measured.
  • a mean value of the measured values was calculated.
  • tips were produced by cutting the 10 produced plugs into a length dimension of 7 mm.
  • a test cartridge was produced by connecting each of these tips with a remaining portion at which a tip is cut off from a cartridge "HeatStick (registered trademark)" for "iQOS” produced by Philip Morris International Inc.
  • the pressure drop (PD) (mmWG) of each aerosol generation component was measured using a filter plug measurer (automatic pressure drop measurer) "QTM” produced by Celulean Ltd. Then, a mean value of the measured values was calculated.
  • Tables 1 and 2 show, as mean values, values of the indentation depth of the plug and the pressure drop of the aerosol generation component.
  • Example 1 Example 2
  • Example 3 Titanium oxide content (wt.%) of CA band 0 0 0 0 FD 9.9 11.8 11.8 19.2
  • TD 16800 25700 25700 27000
  • Crimp ratio I (%) by Equation 2 14.1 ⁇ I (%) ⁇ 35.8 23.8 ⁇ I (%) ⁇ 45.5 23.8 ⁇ I (%) ⁇ 45.5 33.8 ⁇ I (%) ⁇ 55.5

Landscapes

  • Chemical & Material Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Materials Engineering (AREA)
  • Inorganic Chemistry (AREA)
  • Cigarettes, Filters, And Manufacturing Of Filters (AREA)
EP20966187.5A 2020-12-22 2020-12-22 Tow band for smoking article, filter for smoking article, smoking article, and cartridge for smoking article Active EP4085770B1 (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
PCT/JP2020/047849 WO2022137322A1 (ja) 2020-12-22 2020-12-22 喫煙物品用トウバンド、喫煙物品用フィルター、喫煙物品、及び喫煙物品用カートリッジ

Publications (4)

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EP4085770A1 EP4085770A1 (en) 2022-11-09
EP4085770A4 EP4085770A4 (en) 2023-01-18
EP4085770B1 true EP4085770B1 (en) 2024-03-20
EP4085770C0 EP4085770C0 (en) 2024-03-20

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EP (1) EP4085770B1 (pl)
KR (1) KR20230116901A (pl)
PL (1) PL4085770T3 (pl)
WO (1) WO2022137322A1 (pl)

Family Cites Families (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3033698A (en) 1959-10-23 1962-05-08 Eastman Kodak Co Cellulose acetate spinning solutions and process of spinning fine denier filaments
CA2135798A1 (en) 1992-05-27 1993-12-09 Charles M. Buchanan Environmentally non-persistant cellulose ester fibers
JPH07316975A (ja) 1994-05-19 1995-12-05 Daicel Chem Ind Ltd 繊維の捲縮特性の測定方法及びその装置
KR100949505B1 (ko) 2006-06-05 2010-03-24 엘지디스플레이 주식회사 포토 장치 및 방법
US8967155B2 (en) * 2011-11-03 2015-03-03 Celanese Acetate Llc Products of high denier per filament and low total denier tow bands
WO2016084120A1 (ja) * 2014-11-28 2016-06-02 株式会社ダイセル トウバンドの捲縮検査方法、トウバンドの製造方法、トウバンド捲縮検査装置、及びトウバンド製造装置
CN107849750B (zh) * 2015-07-31 2020-05-22 株式会社大赛璐 丝束带的制造方法、丝束带制造装置以及香烟过滤嘴的制造方法
JP7149057B2 (ja) * 2017-07-11 2022-10-06 株式会社ダイセル セルロースアセテートトウバンド及びセルロースアセテートトウバンドの製造方法
JP7217099B2 (ja) * 2018-07-12 2023-02-02 株式会社ダイセル セルロースアセテート繊維、セルロースアセテートトウバンド、及びセルロースアセテートトウバンドの製造方法
JP6867064B2 (ja) * 2020-08-18 2021-04-28 株式会社東亜産業 カートリッジ

Also Published As

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EP4085770A1 (en) 2022-11-09
PL4085770T3 (pl) 2024-05-13
EP4085770A4 (en) 2023-01-18
KR20230116901A (ko) 2023-08-04
WO2022137322A1 (ja) 2022-06-30
EP4085770C0 (en) 2024-03-20

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