EP4544931A1 - Filtre de produit à fumer comprenant une étoupe lyocell qui n'est pas chimiquement modifiée, et produit à fumer la comprenant - Google Patents

Filtre de produit à fumer comprenant une étoupe lyocell qui n'est pas chimiquement modifiée, et produit à fumer la comprenant Download PDF

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Publication number
EP4544931A1
EP4544931A1 EP24750619.9A EP24750619A EP4544931A1 EP 4544931 A1 EP4544931 A1 EP 4544931A1 EP 24750619 A EP24750619 A EP 24750619A EP 4544931 A1 EP4544931 A1 EP 4544931A1
Authority
EP
European Patent Office
Prior art keywords
phenol
lyocell
smoking article
functional additive
tow
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.)
Pending
Application number
EP24750619.9A
Other languages
German (de)
English (en)
Other versions
EP4544931A4 (fr
Inventor
Ki Jin AHN
Kyeng Bae Ma
Jin Chul Yang
John Tae Lee
Sung Hoon Ha
Jong Cheol Jeong
Sang Woo Jin
Eun Young Park
Jeong Hun Lee
Seung Dong SEO
Yeong Nam Hwang
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.)
Kolon Industries Inc
KT&G Corp
Original Assignee
Kolon Industries Inc
KT&G Corp
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Priority claimed from KR1020240013739A external-priority patent/KR20240122339A/ko
Application filed by Kolon Industries Inc, KT&G Corp filed Critical Kolon Industries Inc
Publication of EP4544931A1 publication Critical patent/EP4544931A1/fr
Publication of EP4544931A4 publication Critical patent/EP4544931A4/fr
Pending legal-status Critical Current

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Classifications

    • A—HUMAN NECESSITIES
    • A24—TOBACCO; CIGARS; CIGARETTES; SIMULATED SMOKING DEVICES; SMOKERS' REQUISITES
    • A24D—CIGARS; CIGARETTES; TOBACCO SMOKE FILTERS; MOUTHPIECES OF CIGARS OR CIGARETTES; MANUFACTURE OF TOBACCO SMOKE FILTERS OR MOUTHPIECES
    • A24D3/00—Tobacco smoke filters, e.g. filter tips or filtering inserts; Filters specially adapted for simulated smoking devices; Mouthpieces of cigars or cigarettes
    • A24D3/04—Tobacco smoke filters characterised by their shape or structure
    • A24D3/048—Tobacco smoke filters characterised by their shape or structure containing additives
    • A—HUMAN NECESSITIES
    • A24—TOBACCO; CIGARS; CIGARETTES; SIMULATED SMOKING DEVICES; SMOKERS' REQUISITES
    • A24D—CIGARS; CIGARETTES; TOBACCO SMOKE FILTERS; MOUTHPIECES OF CIGARS OR CIGARETTES; MANUFACTURE OF TOBACCO SMOKE FILTERS OR MOUTHPIECES
    • A24D3/00—Tobacco smoke filters, e.g. filter tips or filtering inserts; Filters specially adapted for simulated smoking devices; Mouthpieces of 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 OF CIGARS OR CIGARETTES; MANUFACTURE OF TOBACCO SMOKE FILTERS OR MOUTHPIECES
    • A24D3/00—Tobacco smoke filters, e.g. filter tips or filtering inserts; Filters specially adapted for simulated smoking devices; Mouthpieces of cigars or cigarettes
    • A24D3/06—Use of materials for tobacco smoke filters
    • A24D3/067—Use of materials for tobacco smoke filters characterised by functional properties
    • A—HUMAN NECESSITIES
    • A24—TOBACCO; CIGARS; CIGARETTES; SIMULATED SMOKING DEVICES; SMOKERS' REQUISITES
    • A24D—CIGARS; CIGARETTES; TOBACCO SMOKE FILTERS; MOUTHPIECES OF CIGARS OR CIGARETTES; MANUFACTURE OF TOBACCO SMOKE FILTERS OR MOUTHPIECES
    • A24D3/00—Tobacco smoke filters, e.g. filter tips or filtering inserts; Filters specially adapted for simulated smoking devices; Mouthpieces of cigars or cigarettes
    • A24D3/06—Use of materials for tobacco smoke filters
    • A24D3/067—Use of materials for tobacco smoke filters characterised by functional properties
    • A24D3/068—Biodegradable or disintegrable
    • A—HUMAN NECESSITIES
    • A24—TOBACCO; CIGARS; CIGARETTES; SIMULATED SMOKING DEVICES; SMOKERS' REQUISITES
    • A24D—CIGARS; CIGARETTES; TOBACCO SMOKE FILTERS; MOUTHPIECES OF CIGARS OR CIGARETTES; MANUFACTURE OF TOBACCO SMOKE FILTERS OR MOUTHPIECES
    • A24D3/00—Tobacco smoke filters, e.g. filter tips or filtering inserts; Filters specially adapted for simulated smoking devices; Mouthpieces of cigars or cigarettes
    • A24D3/06—Use of materials for tobacco smoke filters
    • A24D3/14—Use of materials for tobacco smoke filters of organic materials as additive

Definitions

  • the present disclosure relates to a smoking article filter including lyocell tow in which a functional additive is dispersed, and more particularly, to a smoking article filter that has excellent biodegradability because the lyocell fiber is not chemically modified by the functional additive despite the addition of the functional additive, and a smoking article including the same.
  • Typical cigarette filters include cellulose acetate tow, which is obtained by extracting cellulose from wood pulp and acetylating the extracted cellulose.
  • cigarette filters are assembled into tobacco products, distributed to consumers, provided for smoking, and finally discarded after smoking the cigarette.
  • cigarette filters may be directly discarded as manufacturing residue from cigarette filter manufacturing plants. This cigarette filter waste is collected as waste and landfilled for disposal. In addition, in some cases, smoked cigarettes are not collected as waste and left in the natural environment.
  • phenol-related functional materials or phenol-reducing materials
  • phenol-related functional materials such as polyethylene glycol (PEG), triethyl citrate (TEC), and triacetin (TA)
  • PEG polyethylene glycol
  • TEC triethyl citrate
  • TA triacetin
  • phenol-related functional materials consisting of PEG and TEC are added to hydrophobic cellulose acetate
  • phenol-related functional materials have the problem of lowering biodegradability by serving as a plasticizer for cellulose acetate fibers and bonding hydrophobic cellulose acetate fibers together.
  • One object of the present disclosure is to provide a smoking article filter including lyocell tow in which a functional additive is dispersed, and more particularly, a smoking article filter that has excellent biodegradability because lyocell fibers that constitute lyocell tow are not chemically modified by the functional additive despite the addition of the functional additive.
  • Another object of the present disclosure is to provide a smoking article including a smoking article filter including lyocell tow in which a functional additive is dispersed, and more particularly, to a smoking article including a smoking article filter that has excellent biodegradability because lyocell fibers that constitute lyocell tow are not chemically modified by the functional additive despite the addition of the functional additive.
  • a smoking article filter includes lyocell tow including a plurality of lyocell fibers and a functional additive dispersed in the lyocell tow, wherein at least some of the plurality of lyocell fibers are not chemically modified by the functional additive.
  • the functional additive may be added onto the lyocell fibers in the process of forming the lyocell tow or added onto the lyocell tow in the process of forming the smoking article filter.
  • the functional additive may include at least one phenol-reducing material.
  • the at least one phenol-reducing material may include a first phenol-reducing material, a 13 C NMR spectrum obtained by 13 C NMR analysis of the lyocell tow in which the functional additive is dispersed may exhibit a first peak located within a first peak range, and the 13 C NMR spectrum obtained from the 13 C NMR analysis of the first phenol-reducing material may exhibit a second peak located within the first peak range.
  • the first peak and the second peak may be the same.
  • the 13 C NMR spectrum of the lyocell tow may be obtained by performing the 13 C NMR analysis on a first solution in which the lyocell tow in which the functional additive is dispersed is dissolved in an NMR solvent.
  • the 13 C NMR spectrum of the lyocell tow in which the functional additive is dispersed may further exhibit a third peak located within a second peak range that is different from the first peak range, and the 13 C NMR spectrum obtained from the 13 C NMR analysis of the first phenol-reducing material may further exhibit a fourth peak located within the second peak range.
  • the at least one phenol-reducing material may further include a second phenol-reducing material
  • the 13 C NMR spectrum of the lyocell tow in which the functional additive is dispersed may further exhibit a third peak located within a second peak range that is different from the first peak range
  • the 13 C NMR spectrum obtained from the 13 C NMR analysis of the second phenol-reducing material may exhibit a fourth peak located within the second peak range.
  • the phenol-reducing material may include at least one of polyethylene glycol (PEG), triethyl citrate (TEC), and triacetin (TA).
  • PEG polyethylene glycol
  • TEC triethyl citrate
  • TA triacetin
  • the functional additive may further include an emulsion.
  • the filter portion includes lyocell tow including a plurality of lyocell fibers and a functional additive dispersed in the lyocell tow, wherein at least some of the plurality of lyocell fibers are not chemically modified by the functional additive, the functional additive includes a phenol-reducing material, and the phenol-reducing material includes at least one of PEG, TEC, and TA.
  • the present disclosure can provide a smoking article filter that can maintain the excellent biodegradability of lyocell fibers because the lyocell fibers are not chemically modified by a functional additive even though the functional additive including a phenol-reducing material with phenol reduction performance is dispersed in the lyocell tow, and a smoking article including the same.
  • the present disclosure can provide a smoking article filter having excellent biodegradability and excellent phenol reduction performance by dispersing a functional additive including a phenol-reducing material with phenol reduction performance in lyocell tow, and a smoking article including the same.
  • first, second, A, B, (a), and (b) may be used. Such terms are only used for distinguishing one component from another component, and the essence, order, sequence, or the like of the corresponding component is not limited by the terms.
  • a certain component is described as being “connected,” “coupled,” or “linked” to another component, it should be understood that, although the component may be directly connected or linked to the other component, still another component may also be “connected,” “coupled,” or “linked” between the two components.
  • smoking article may refer to any product that can be smoked or any product that can provide a smoking experience, regardless of whether the product is based on tobacco, tobacco derivatives, expanded tobacco, reconstituted tobacco, or tobacco substitutes.
  • smoking articles may include smokable products such as cigarettes, cigars, and cigarillos.
  • smoking material may refer to any type of material that can be used in a smoking article.
  • upstream or “upstream direction” may refer to a direction moving away from an oral region of a smoker
  • downstream or “downstream direction” may refer to a direction approaching the oral region of the smoker.
  • longitudinal direction may refer to a direction corresponding to a longitudinal axis of a smoking article.
  • FIG. 1 is a diagram showing a schematic configuration of a smoking article according to one embodiment of the present disclosure.
  • FIG. 2 shows the NMR spectrum results of PEG 600 added to lyocell tow prepared in the embodiment, according to one embodiment of the present disclosure.
  • FIG. 3 shows the NMR spectrum results of TEC added to lyocell tow prepared in the embodiment, according to one embodiment of the present disclosure.
  • FIG. 4 shows the NMR spectrum results of TA added to lyocell tow prepared in the embodiment, according to one embodiment of the present disclosure.
  • FIG. 5 shows the NMR spectrum results of lyocell tow prepared by adding PEG 600, TEC, and TA in the embodiment, according to one embodiment of the present disclosure.
  • smoking article may refer to an article capable of generating an aerosol, such as tobacco (cigarettes) or cigars.
  • the smoking article may include an aerosol-generating material or an aerosol-forming substrate.
  • the smoking article may include a solid material based on tobacco raw materials, such as leaf tobacco, cut tobacco, and reconstituted tobacco.
  • the smoking material may include volatile compounds.
  • upstream or upstream direction may refer to a direction moving away from an oral region of a smoker
  • downstream or downstream direction may refer to a direction approaching the oral region of the smoker.
  • the smoking material portion 10 is located upstream or in an upstream direction of a filter portion for a smoking article (or smoking article filter portion 20 or filter portion 20).
  • the smoking article 100 is a combustion-type cigarette
  • the present disclosure is not limited thereto, and the smoking article 100 may also be a heating-type cigarette or the like used along with an aerosol generating device (not shown) such as an electronic cigarette device.
  • the present disclosure relates to the smoking article filter (or smoking article filter portion 20 or filter portion 20) included in the smoking article 100, the smoking article filter 20 according to one embodiment of the present disclosure includes lyocell tow including a plurality of lyocell fibers and a functional additive dispersed in the lyocell tow, wherein at least some of the plurality of lyocell fibers may not be chemically modified by the functional additive.
  • 'not chemically modified means that, even though a functional additive is added to lyocell tow, the plurality of lyocell fibers that make up lyocell tow are not chemically synthesized, chemically combined, or compositionally modified with the functional additive, so the chemical properties and characteristics of the lyocell fiber do not change.
  • the chemical properties and characteristics of the lyocell fibers included in lyocell tow to which functional additives have been added are the same as those of the lyocell fibers included in lyocell tow to which functional additives have not been added.
  • the lyocell tow included in the smoking article filter 20 is composed of a plurality of lyocell fibers corresponding to regenerated cellulose, which is a natural polymer that has not been chemically modified despite the addition of the functional additive, the characteristics of lyocell fiber, which has excellent biodegradability, are maintained, so the biodegradability of a smoking article filter including lyocell tow composed of these fibers may also be excellent.
  • the functional additive may be added onto lyocell fibers in the process of forming lyocell tow, or may be added onto lyocell tow in the process of forming a smoking article filter using the lyocell tow.
  • the functional additive when the functional additive is added onto lyocell fibers in the process of forming lyocell tow, it may be added by spraying it directly onto the surface of the lyocell fiber in a spray type manner.
  • the functional additive when the functional additive is added onto the lyocell tow in the process of forming a smoking article filter, it may be added by indirect spraying in a brush type manner.
  • the functional additive may include a phenol-related functional material.
  • the functional additive may further include an emulsion.
  • the functional additive may include a phenol-related functional material, and the phenol-related functional material may be a phenol-reducing material.
  • phenol may refer to a group of chemical compounds consisting of hydroxyl groups (-OH) directly bonded to an aromatic hydrocarbon functional group, and the phenol group includes phenol, catechol, m+p cresol, and o-cresol.
  • phenol-reducing material may correspond to a material that may specifically reduce at least one of phenol-based materials in smoke generated during smoking, such as phenol, catechol, m+p cresol, and o-cresol.
  • the phenol-reducing material may include at least one of polyethylene glycol (PEG), triethyl citrate (TEC), and triacetin (TA).
  • PEG polyethylene glycol
  • TEC triethyl citrate
  • TA triacetin
  • the 13 C NMR spectrum of lyocell tow according to one embodiment may exhibit a first peak located within a first peak range.
  • 13 C NMR analysis of the lyocell tow may be performed by performing 13 C NMR analysis on a first solution in which lyocell tow in which a functional additive including phenol-related functional materials is dispersed is dissolved in an NMR solvent and obtaining and analyzing a spectrum.
  • the NMR solvent may include CDCl 3 , but is not limited thereto, and the NMR solvent is not limited as long as it is a solvent that can perform NMR analysis.
  • the 13 C NMR spectrum of the phenol-related functional material when analyzing the 13 C NMR spectrum obtained by 13 C NMR analysis of the phenol-related functional material included in the functional additive, may exhibit a second peak located within the first peak range. In some embodiments, the first peak and the second peak may be the same.
  • 13 C NMR analysis of the phenol-related functional material can be performed by performing 13 C NMR analysis on a second solution in which phenol-related functional materials are dissolved in an NMR solvent and obtaining and analyzing a spectrum, and the NMR solvent may include CDCl 3 .
  • the second peak appearing in the 13 C NMR spectrum of the phenol-related functional material may be located within the range of the first peak appearing in the 13 C NMR spectrum of the lyocell tow in which the functional additive including the phenol-related functional material is dispersed, and the first peak and the second peak may be the same.
  • the peaks appearing in the 13 C NMR spectrum of the phenol-related functional material remain the same before and after addition to lyocell tow, it can be confirmed that even though phenol-related functional materials are added to lyocell tow, the phenol-related functional materials are not chemically modified.
  • phenol-related functional material added to lyocell tow is not chemically modified, it can be indirectly or directly confirmed that at least some of the plurality of lyocell fibers constituting the lyocell tow are not chemically modified by phenol-related functional materials.
  • the phenol-related functional material included in the functional additive may include a plurality of phenol-reducing materials.
  • the 13 C NMR spectrum for lyocell tow in which the functional additive including the plurality of phenol-reducing materials is dispersed may exhibit a plurality of peaks located within the peak range included in the 13C NMR spectrum of each of the plurality of phenol-reducing materials.
  • the 13 C NMR spectrum for the lyocell tow in which the functional additive is dispersed may exhibit a peak range included in the 13C NMR spectrum of the first phenol-reducing material.
  • the phenol-related functional material included in the functional additive includes a plurality of phenol-reducing materials
  • the 13 C NMR spectrum for lyocell tow in which functional additives including the first and second phenol-reducing materials are dispersed may exhibit both a first peak range appearing in the 13 C NMR spectrum of the first phenol-reducing material and a second peak range appearing in the 13 C NMR spectrum of the second phenol-reducing material.
  • the 13 C NMR spectrum for lyocell tow in which functional additives including the first to third phenol-reducing materials are dispersed may exhibit a first peak range appearing in the 13 C NMR spectrum of the first phenol-reducing material, a second peak range appearing in the 13 C NMR spectrum of the second phenol-reducing material, and a third peak range appearing in the 13 C NMR spectrum of the third phenol-reducing material
  • the phenol-reducing material included in the functional additive may include polyethylene glycol (PEG) with a molecular weight of 600, and the 13 C NMR spectrum of PEG 600 may exhibit a peak located within an a- th peak range (peak a) of 3.5 ppm to 4.0 ppm, 3.6 ppm to 3.8 ppm, 3.65 ppm to 3.78 ppm, 3.62 ppm to 3.75 ppm, or 3.65 ppm to 3.66 ppm.
  • PEG polyethylene glycol
  • the phenol-reducing material included in the functional additive may include triethyl citrate (TEC), and the 13 C NMR spectrum of TEC may exhibit peaks located within a b- th peak range (peak b) of 4.0 ppm to 5.0 ppm, 4.05 ppm to 4.5 ppm, 4.1 ppm to 4.35 ppm, or 4.15 ppm to 4.33 ppm, and a c- th peak range (peak c) of 2.5 ppm to 3.0 ppm, 2.4 ppm to 3.0 ppm, 2.7 ppm to 2.95 ppm, or 2.79 ppm to 2.93 ppm.
  • TEC triethyl citrate
  • the phenol-reducing material included in the functional additive may include triacetin (TA), and the 13 C NMR spectrum of TA may exhibit peaks located within a d- th peak range (peak d) of 5.0 ppm to 5.5ppm, 5.1 ppm to 5.4 ppm, 5.2 ppm to 5.3 ppm, 5.22 ppm to 5.28 ppm, or 2.24 ppm to 5.26 ppm, an e- th peak range (peak e) of 4.0 ppm to 5.0 ppm, 4.05 ppm to 4.5 ppm, 4.1 ppm to 4.35 ppm, 4.12 ppm to 4.33 ppm, or 4.14 ppm to 4.31 ppm, and an f- th peak range (peak f) of 2.0 ppm to 2.5 ppm, 2.03 ppm to 2.2 ppm, 2.04 ppm to 2.15 ppm, 2.05 ppm to 2.13 ppm, or 2.07
  • the e- th peak range (peak e) included in the 13 C NMR spectrum of TA may be included in the b- th peak range (peak b) included in the 13 C NMR spectrum of TEC.
  • the 13 C NMR spectrum of the lyocell tow in which a functional additive including PEG 600 as a phenol-reducing material is dispersed may exhibit at least the a- th peak range.
  • the 13 C NMR spectrum of lyocell tow in which a functional additive including TEC as a phenol-reducing material is dispersed may exhibit at least the b- th peak range and the c- th peak range.
  • the 13 C NMR spectrum of lyocell tow in which a functional additive including TA as a phenol-reducing material is dispersed may exhibit at least the d- th peak range, the e- th peak range, and the f- th peak range.
  • the 13 C NMR spectrum of lyocell tow in which a functional additive including PEG600, TEC, and TA as phenol-reducing materials is dispersed may exhibit at least the a- th peak range, the b- th peak range (or the e- th peak range), the c- th peak range, the d- th peak range, and the f- th peak range.
  • 13 C NMR analyses was performed on PEG 600, TEC, and TA, which can be included as phenol-reducing materials in functional additives, respectively, and a 13 C NMR analysis was performed on lyocell tow including a plurality of lyocell fibers and in which functional additives including PEG 600, TEC, and TA were dispersed.
  • a smoking article filter satisfying the conditions of a resistance to draw of 405 mmWG, a length of 108 mm, and a circumference of 24.2 mm was manufactured, 100 mg of the lyocell tow portion in which the functional additive was dispersed was extracted from the manufactured smoking article filter, the extracted lyocell tow was dissolved in 0.75 mL of CDCl 3 used as an NMR solvent for 10 hours, and the NMR solution was subjected to 13 C NMR analysis (JEOL ECX 500), and the results are shown in the 13 C NMR spectrum in FIG. 5 .
  • an a- th peak range, a b- th peak range (or an e- th peak range), a c- th peak range, a d- th peak range, and an f- th peak range which are the peak ranges appearing in the 13 C NMR spectra (see FIGS. 2 to 4 ) of the phenol-reducing materials (PEG 600, TEC, TA) that were not added to lyocell tow, appear in the 13 C NMR spectrum (see FIG. 5 ) of lyocell tow to which the phenol-reducing materials were added.
  • FIG. 1 is a diagram showing a schematic configuration of a smoking article according to one embodiment of the present disclosure.
  • the smoking article 100 includes a smoking material portion 10 and a filter portion 20, and the smoking article filter described above may be applied to the filter portion 20 of the smoking article 100.
  • the smoking material portion 10 is located upstream of the filter portion 20.
  • the smoking material portion 10 may be filled with a smoking material such as raw tobacco leaves, reconstituted tobacco leaves, or a mixture of tobacco leaves and reconstituted tobacco leaves.
  • a processed smoking material may be filled in the smoking material portion 10 in the form of a sheet or shredded tobacco.
  • the smoking material portion 10 may have the form of a longitudinally extending rod whose length, circumference, and diameter are not particularly limited, but the length, circumference, and diameter may be adjusted to sizes commonly used in the art in consideration of the filling amount of smoking material, user's preference, and the like.
  • the smoking material portion 10 may include at least one aerosol-generating material selected from glycerin, propylene glycol, ethylene glycol, dipropylene glycol, diethylene glycol, triethylene glycol, tetraethylene glycol, and oleyl alcohol.
  • the smoking mass portion 10 may contain other additives such as flavoring agents, humectants and/or acetate compounds.
  • the aerosol-generating material and additives may be contained in the smoking material.
  • the filter portion 20 is disposed downstream of the smoking material portion 10 and serves as a filter through which an aerosol material generated in the smoking material portion 10 passes just before the user inhales it.
  • the filter portion 20 may be manufactured using various materials or manufactured in various forms.
  • the filter portion 20 basically includes the above-described smoking article filter including lyocell tow including a plurality of lyocell fibers and TEC dispersed on the lyocell tow.
  • the smoking article filter including the lyocell tow and TEC can replace all or part of the filter portion 20 of existing smoking articles, and when replacing part of the filter portion 20, a filter material that is used conventionally may be used together.
  • Existing filter materials may include, for example, cellulose acetate filters, paper filters, hollow tube filters, or the like.
  • the filter portion 20 is shown as a mono filter consisting of a single filter, but the present disclosure is not limited thereto.
  • the filter portion 20 may be provided as a dual filter, a triple filter, or the like, which includes two or more filters to increase filter efficiency.
  • one of the plurality of filters is a filter of the present disclosure (hereinafter referred to as lyocell filter) including lyocell tow including lyocell fibers and TEC dispersed in the lyocell tow
  • the other filter(s) among the plurality of filters may be a cellulose acetate filter and/or a paper filter.
  • a length of the lyocell filter of the present disclosure may be 25% to 50% of the total length of the filter portion 20.
  • the smoking article 100 may further include a hollow tube structure, which is a tubular structure including a hollow interior.
  • the hollow tube structure may be disposed downstream of the filter portion 20 including the lyocell filter.
  • perforations may be formed in the hollow tube structure, but the present disclosure is not limited thereto. Perforations may not be formed in the hollow tube structure. In some embodiments, when perforations are formed in the hollow tube structure, the perforations may be formed at a position located 10 mm to 15 mm from the downstream end of the smoking article 100 in the upstream direction.
  • the exterior of the smoking material portion 10 and the filter portion 20 may be wrapped with a wrapper 30a or 30b.
  • the smoking material portion 10 may be wrapped with a smoking material portion wrapper 30a.
  • Some of the cigarette smoke generated during a typical combustion process of the smoking material portion 10 is released into the atmosphere through the smoking material portion wrapper 30a before passing through the filter portion 20, and sidestream smoke is unpleasant to secondhand smokers.
  • sidestream smoke There have been various attempts to reduce sidestream smoke, such as adding fillers such as magnesium oxide, titanium oxide, cerium oxide, aluminum oxide, calcium carbonate, and zirconium carbonate to conventional cigarette paper.
  • fillers such as magnesium oxide, titanium oxide, cerium oxide, aluminum oxide, calcium carbonate, and zirconium carbonate
  • the smoking material portion wrapper 30a may be filled with a mixture of magnesium oxide (MgO and/or Mg(OH) 2 ) and calcium carbonate (CaCO 3 ) in order to reduce sidestream smoke and at the same time prevent a decrease in smoking taste sensation, a decrease in ash integrity, and loss of combustion.
  • MgO and/or Mg(OH) 2 magnesium oxide
  • CaCO 3 calcium carbonate
  • the filter portion 20 may be wrapped with a filter portion wrapper 30b.
  • the filter portion wrapper 30b may be made of grease-resistant wrapping paper, and an aluminum foil may be further included on an inner surface of the filter portion wrapper 30b.
  • the filter portion wrapper 30b may have a basis weight of 90 mg -2 or less, but is not limited thereto.
  • the smoking material portion 10 wrapped with the smoking material portion wrapper 30a and the filter portion 20 wrapped with the filter portion wrapper 30b may be joined and wrapped with tipping paper 40.
  • the tipping paper 40 may be wrapped around at least a portion (for example, a partial downstream area) of the smoking material portion wrapper 30a and the exterior of the filter portion wrapper 30b.
  • the tipping paper 40 may be made of non-porous wrapping paper that has not been treated to be grease-resistant, but the present disclosure is not limited thereto.
  • the tipping paper 40 may prevent the filter portion 20 from burning by including an incombustible material, but the present disclosure is not limited thereto.

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  • Chemical & Material Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Materials Engineering (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Biodiversity & Conservation Biology (AREA)
  • Cigarettes, Filters, And Manufacturing Of Filters (AREA)
EP24750619.9A 2023-02-03 2024-02-02 Filtre de produit à fumer comprenant une étoupe lyocell qui n'est pas chimiquement modifiée, et produit à fumer la comprenant Pending EP4544931A4 (fr)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
KR20230014850 2023-02-03
KR1020240013739A KR20240122339A (ko) 2023-02-03 2024-01-30 화학적으로 변형되지 않은 라이오셀 섬유를 포함하는 흡연 물품용 필터, 및 이를 포함하는 흡연 물품
PCT/KR2024/001603 WO2024162822A1 (fr) 2023-02-03 2024-02-02 Filtre de produit à fumer comprenant une étoupe lyocell qui n'est pas chimiquement modifiée, et produit à fumer la comprenant

Publications (2)

Publication Number Publication Date
EP4544931A1 true EP4544931A1 (fr) 2025-04-30
EP4544931A4 EP4544931A4 (fr) 2026-03-11

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EP24750619.9A Pending EP4544931A4 (fr) 2023-02-03 2024-02-02 Filtre de produit à fumer comprenant une étoupe lyocell qui n'est pas chimiquement modifiée, et produit à fumer la comprenant

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US (1) US20260206837A1 (fr)
EP (1) EP4544931A4 (fr)
JP (1) JP2025540635A (fr)
CN (1) CN120529839A (fr)
TW (1) TW202435773A (fr)
WO (1) WO2024162822A1 (fr)

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US20260206837A1 (en) 2026-07-23
CN120529839A (zh) 2025-08-22
TW202435773A (zh) 2024-09-16

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