WO2024162823A1 - 화학적으로 변형되지 않은 라이오셀 섬유를 포함하는 흡연 물품용 필터, 및 이를 포함하는 흡연 물품 - Google Patents
화학적으로 변형되지 않은 라이오셀 섬유를 포함하는 흡연 물품용 필터, 및 이를 포함하는 흡연 물품 Download PDFInfo
- Publication number
- WO2024162823A1 WO2024162823A1 PCT/KR2024/001604 KR2024001604W WO2024162823A1 WO 2024162823 A1 WO2024162823 A1 WO 2024162823A1 KR 2024001604 W KR2024001604 W KR 2024001604W WO 2024162823 A1 WO2024162823 A1 WO 2024162823A1
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- WIPO (PCT)
- Prior art keywords
- lyocell
- tow
- functional additive
- dispersed
- spectrum
- 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.)
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- 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
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- 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
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- 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 invention relates to a filter for a smoking article comprising lyocell tow having a functional additive dispersed therein.
- the present invention relates to a filter for a smoking article having excellent biodegradability because lyocell fibers are not chemically modified by the functional additive despite the addition of the functional additive, and to a smoking article comprising the same.
- a typical cigarette filter contains cellulose acetate tow, which is made by extracting cellulose from wood pulp and acetylating it.
- cigarette filters are assembled into cigarette products, distributed to consumers, provided for smoking, and ultimately discarded after smoking the cigarette.
- cigarette filters are also directly discarded as manufacturing residue from cigarette filter manufacturing plants. These cigarette filter wastes are collected as waste and landfilled for processing. In addition, in some cases, cigarette smoke is not collected as waste and is left in the natural environment.
- a functional additive is added to the tow.
- a phenol-related functional material or a phenol-reducing material that can specifically reduce phenol substances generated during smoking is added to reduce the phenol smoke component in mainstream smoke.
- phenol-related functional materials such as polyethylene glycol (PEG), triethyl citrate (TEC), and triacetin (TA) are added to cellulose acetate tow.
- the need for a filter for smoking articles with excellent biodegradability is increasing as the lyocell fiber is not chemically modified even when functional additives are added to highly biodegradable lyocell tow.
- a method for accurately analyzing whether the lyocell fiber is not chemically modified despite the application of functional additives is required.
- the problem to be solved by the present invention relates to a smoking article filter including lyocell tow in which a functional additive is dispersed, and provides a smoking article filter having excellent biodegradability because the lyocell fibers constituting the lyocell tow are not chemically modified by the functional additive despite the addition of the functional additive.
- a smoking article filter including a smoking article filter comprising lyocell tow in which a functional additive is dispersed, and provides a smoking article including a smoking article filter having excellent biodegradability because the lyocell fibers constituting the lyocell tow are not chemically modified by the functional additive despite the addition of the functional additive.
- a filter for a smoking article comprises: lyocell tow comprising 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, and an FT-IR spectrum of the lyocell tow in which the functional additive is dispersed exhibits a first vibration peak, which is a vibration peak in a range of 1645 cm -1 to 1650 cm -1 .
- the functional additive comprises a phenol-reducing agent and a phenol-reducing agent, wherein the phenol-reducing agent can comprise at least one of polyethylene glycol (PEG), triethyl citrate (TEC), and triacetin (TA).
- PEG polyethylene glycol
- TEC triethyl citrate
- TA triacetin
- the FT-IR spectrum of the lyocell tow having the functional additive dispersed therein may further exhibit a second vibrational peak, which is a vibrational peak within the range of 1735 cm -1 to 1745 cm -1 .
- a parameter is defined as a ratio of the height of the second vibrational peak to the height of the first vibrational peak in an FT-IR spectrum, and the parameter value in the FT-IR spectrum of the lyocell tow having the functional additive dispersed therein may be greater than or equal to the parameter value in the FT-IR spectrum of the cleaned lyocell tow, wherein the cleaned lyocell tow having the functional additive dispersed therein is cleaned using a detergent.
- a parameter is defined as a ratio of the height of the second vibrational peak to the height of the first vibrational peak in an FT-IR spectrum, and the parameter value in the FT-IR spectrum of the lyocell tow having the functional additive dispersed therein may have a range of 1 to 20.
- the parameter value in the FT-IR spectrum of the washed lyocell tow may have a value of 1 or less.
- a filter for a smoking article comprises: lyocell tow comprising 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, and an FT-IR spectrum of the lyocell tow in which the functional additive is dispersed exhibits a first vibration peak, which is a vibration peak corresponding to a C-H bond.
- a parameter is defined as a ratio of the height of the second vibrational peak to the height of the first vibrational peak in an FT-IR spectrum, and the parameter value in the FT-IR spectrum of the lyocell tow having the functional additive dispersed therein may be greater than the parameter value in the FT-IR spectrum of cleaned lyocell tow, wherein the cleaned lyocell tow having the functional additive dispersed therein is washed using a detergent.
- a smoking article including a smoking material portion, a filter portion, and a wrapper, wherein 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, and an FT-IR spectrum of the lyocell tow in which the functional additive is dispersed exhibits a first vibration peak, which is a vibration peak in a range of 1645 cm -1 to 1650 cm -1 .
- a filter for a smoking article and a smoking article including the same can be provided in which a functional additive including a phenol-reducing material having phenol-reducing performance is dispersed in lyocell tow, but the lyocell fiber is not chemically modified by the functional additive, thereby maintaining excellent biodegradability of the lyocell fiber.
- a functional additive including a phenol-reducing material having phenol-reducing performance is dispersed in lyocell tow, thereby providing a filter for a smoking article having excellent biodegradability and also excellent phenol-reducing performance and a smoking article including the same.
- the lyocell fiber is not chemically modified when a phenol-reducing substance is added to the lyocell tow.
- FIG. 1 is a drawing showing a schematic configuration of a smoking article according to one embodiment of the present invention.
- Figure 2 is a graph comparing the FT-IR spectra of lyocell tow before and after cleaning without any functional additives dispersed therein.
- Figure 3 is a graph comparing the FT-IR spectra of lyocell tow dispersed with a functional additive including PEG before and after cleaning.
- Figure 4 is a graph comparing the FT-IR spectra of lyocell tow dispersed with a functional additive including TEC before and after cleaning.
- Figure 5 is a graph comparing the FT-IR spectra of lyocell tow dispersed with a functional additive including TA before and after cleaning.
- Figure 6 is a graph comparing the FT-IR spectra of lyocell tow dispersed with functional additives including TA and TEC before and after cleaning.
- Figure 7 is a graph comparing the FT-IR spectra of lyocell tow dispersed with functional additives including PEG and TEC before and after cleaning.
- Figure 8 is a graph comparing the FT-IR spectra of lyocell tow dispersed with functional additives including TA and PEG before and after cleaning.
- Figure 9 is a graph comparing the FT-IR spectra of lyocell tow dispersed with functional additives including TA, TEC and PEG before and after cleaning.
- Figure 10 is a graph comparing the FT-IR spectra of cellulose acetate tow before and after cleaning without any functional additives dispersed therein.
- Figure 11 is a graph comparing the FT-IR spectra of cellulose acetate tow dispersed with a functional additive including PEG before and after washing.
- Figure 12 is a graph comparing the FT-IR spectra of cellulose acetate tow dispersed with a functional additive including TEC before and after washing.
- Figure 13 is a graph comparing the FT-IR spectra of cellulose acetate tow dispersed with a functional additive including TA before and after washing.
- Figure 14 is a graph comparing the FT-IR spectra of cellulose acetate tow dispersed with functional additives including TA and TEC before and after washing.
- Figure 15 is a graph comparing the FT-IR spectra of cellulose acetate tow dispersed with functional additives including PEG and TEC before and after washing.
- Figure 16 is a graph comparing the FT-IR spectra of cellulose acetate tow dispersed with functional additives including TA and PEG before and after washing.
- Figure 17 is a graph comparing the FT-IR spectra of cellulose acetate tow dispersed with functional additives including TA, TEC, and PEG before and after washing.
- Figure 18 is a graph showing the height of the first vibration peak and the height of the second vibration peak in the FT-IR spectrum of lyocell tow in which a functional additive including PEG is dispersed.
- FIG. 19 is a graph showing the height of the first vibration peak and the height of the second vibration peak in the FT-IR spectrum of the washed lyocell tow (lyocell tow of FIG. 18) dispersed with a functional additive including PEG, after washing.
- Figure 20 is a graph showing the height of the first vibration peak and the height of the second vibration peak in the FT-IR spectrum of lyocell tow in which functional additives including TEC and PEG are dispersed.
- FIG. 21 is a graph showing the height of the first vibration peak and the height of the second vibration peak in the FT-IR spectrum of the washed lyocell tow (the lyocell tow of FIG. 20) dispersed with a functional additive including TEC and PEG, after washing.
- Figure 22 is a graph showing the height of the first vibration peak and the height of the second vibration peak in the FT-IR spectrum of lyocell tow in which functional additives including TA, TEC, and PEG are dispersed.
- FIG. 23 is a graph showing the height of the first vibration peak and the height of the second vibration peak in the FT-IR spectrum of the washed lyocell tow (the lyocell tow of FIG. 22) dispersed with functional additives including TA, TEC, and PEG, after washing.
- Figure 24 is a graph showing the height of the third vibration peak and the height of the second vibration peak in the FT-IR spectrum of cellulose acetate tow in which a functional additive including PEG is dispersed.
- FIG. 25 is a graph showing the height of the third vibration peak and the height of the second vibration peak in the FT-IR spectrum of the washed cellulose acetate tow (cellulose acetate tow of FIG. 24) in which a functional additive including PEG is dispersed is washed.
- Figure 26 is a graph showing the height of the third vibration peak and the height of the second vibration peak in the FT-IR spectrum of cellulose acetate tow in which functional additives including TEC and PEG are dispersed.
- FIG. 27 is a graph showing the height of the third vibration peak and the height of the second vibration peak in the FT-IR spectrum of the washed cellulose acetate tow (cellulose acetate tow of FIG. 26) dispersed with functional additives including TEC and PEG, after washing.
- Figure 28 is a graph showing the height of the third vibration peak and the height of the second vibration peak in the FT-IR spectrum of cellulose acetate tow in which functional additives including TA, TEC, and PEG are dispersed.
- FIG. 29 is a graph showing the height of the third vibration peak and the height of the second vibration peak in the FT-IR spectrum of the washed cellulose acetate tow (cellulose acetate tow of FIG. 28) dispersed with functional additives including TA, TEC, and PEG, after washing.
- first, second, A, B, (a), (b), etc. may be used. These terms are only intended to distinguish the components from other components, and the nature, order, or sequence of the components are not limited by the terms.
- a component is “connected,” “coupled,” or “connected” to another component, it should be understood that the component may be directly connected or connected to the other component, but another component may also be “connected,” “coupled,” or “connected” between each component.
- a "smoking article” may mean any smokeable product or any product capable of providing a smoking experience, whether based on tobacco, a tobacco derivative, expanded tobacco, reconstituted tobacco or a tobacco substitute.
- smoking articles may include smokeable products such as cigarettes, cigars and cigarillos.
- smoking material may mean any type of material that can be used in a smoking article.
- upstream or “upstream direction” may mean a direction away from the smoker’s mouth
- downstream or “downstream direction” may mean a direction toward the smoker’s mouth.
- longitudinal direction may mean a direction corresponding to the longitudinal axis of the smoking article.
- FIG. 1 is a drawing showing a schematic configuration of a smoking article according to one embodiment of the present invention.
- a "smoking article” may mean an article capable of generating an aerosol, such as a cigarette (cigarette), a cigar, etc.
- 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, tobacco ash, or reconstituted tobacco.
- the smoking material may include a volatile compound.
- 'upstream' or 'upstream direction' means a direction away from the mouth of a user smoking the smoking article (1)
- 'downstream' or 'downstream direction' means a direction approaching the mouth of a user smoking the smoking article (1).
- the smoking material portion (10) is located upstream or in the upstream direction of the filter portion (20, or filter, filter portion for a smoking article) for the smoking article.
- the smoking article (1) is described as an example of a combustion-type cigarette, but is not limited thereto, and the smoking article (1) may correspond to a heated cigarette, etc. used with an aerosol generating device (not shown) such as an electronic cigarette device.
- the present invention relates to a filter (20, or filter portion for a smoking article) for a smoking article included in a smoking article (1), and a filter (20) for a smoking article according to one embodiment of the present invention comprises a 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.
- the term “not chemically modified” in this specification may mean that, despite the functional additive being added to the lyocell tow, the plurality of lyocell fibers constituting the lyocell tow are not chemically synthesized with the functional additive, chemically bonded with the functional additive, or are not compositionally modified, so that the chemical properties and characteristics of the lyocell fibers are not changed.
- the chemical properties and characteristics of the lyocell fibers included in the lyocell tow with the functional additive added are identical to the chemical properties and characteristics of the lyocell fibers included in the lyocell tow with the functional additive not added.
- the lyocell tow included in the filter (20) for a smoking article according to the present invention is composed of a plurality of lyocell fibers corresponding to regenerated cellulose belonging to a natural polymer that is not chemically modified despite the addition of a functional additive, and thus the characteristics of the lyocell fibers having excellent biodegradability are maintained, so that the biodegradability of the filter for a smoking article including the lyocell tow composed of the same can also be excellent.
- the functional additive may be added onto lyocell fibers in the process of forming lyocell tow, and may be added onto lyocell tow in the process of forming a filter for a smoking article using 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 being directly sprayed onto the surface of the lyocell fibers in a spray type.
- the functional additive when the functional additive is added onto lyocell tow in the process of forming a filter for a smoking article, it may be added by being indirectly sprayed in a brush type.
- the functional additive may include a phenol-related functional material and an emulsion.
- the functional additive may include a phenol-related functional material, and the phenol-related functional material may be a phenol-reducing material.
- the "phenol” may refer to a group of chemical compounds consisting of a hydroxyl group (-OH) directly bonded to an aromatic hydrocarbon functional group, and the phenol group includes phenol, catechol, m+P cresol, and o-cresol.
- the "phenol-reducing material” may correspond to a material that can specifically reduce at least one of phenol-related materials in smoke generated when 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
- An FT-IR spectrum of a lyocell tow having a functional additive dispersed therein may exhibit a first vibration peak, which is a vibration peak in a range of at least 1645 cm -1 to 1650 cm -1 .
- the first vibration peak in the range of 1645 cm -1 to 1650 cm -1 may be a vibration peak corresponding to a carbon-hydrogen (CH) bond.
- the vibration peak corresponding to the carbon-hydrogen (CH) bond may be a vibration peak corresponding to a lyocell crystal number.
- the first vibration peak may be a reference value for defining a parameter (PCF) described below.
- the above FT-IR spectrum can be obtained by the ATR method (total reflection method) using "IN10MX (manufactured by Thermo Fisher Scientific)".
- the FT-IR spectrum of the lyocell tow having the functional additive dispersed therein may further exhibit a second vibration peak, which is a vibration peak in the range of 1735 cm -1 to 1745 cm -1 .
- an FT-IR spectrum obtained by analyzing lyocell tow in which the functional additive is dispersed and an FT-IR spectrum obtained by analyzing washed lyocell tow in which the functional additive is dispersed is washed using a detergent may be used.
- a parameter may be defined as the ratio (H2/H1) of the height of the second vibration peak (H2) to the height (H1) of the first vibration peak appearing in the FT-IR spectrum.
- the detergent may include, but is not limited to, at least one of HFIP solvent, MeOH, and Hexane.
- the parameter (PCF) value in the FT-IR spectrum of the lyocell tow having the functional additive dispersed therein may be greater than or equal to the parameter (PCF) value in the FT-IR spectrum of the washed lyocell tow having the functional additive dispersed therein, which is washed using a detergent.
- the parameter (PCF) value in the FT-IR spectrum of the lyocell tow having the functional additive dispersed therein may be greater than the parameter (PCF) value in the FT-IR spectrum of the washed lyocell tow having the functional additive dispersed therein, which is washed using a detergent.
- the ratio (H2/H1) of the height of the second vibrational peak to the height (H1) of the first vibrational peak in the FT-IR spectrum of the lyocell tow having the functional additive dispersed therein, i.e. the parameter (PCF) can have a range of 1 or more and 20 or less, or a range of more than 1 and less than 20.
- the parameter (PCF) value in the FT-IR spectrum of the washed lyocell tow may have a value of 1 or less.
- FIG. 2 is a graph comparing the FT-IR spectra of lyocell tow before and after cleaning without a functional additive dispersed therein
- FIG. 3 is a graph comparing the FT-IR spectra of lyocell tow before and after cleaning with a functional additive including PEG dispersed therein
- FIG. 4 is a graph comparing the FT-IR spectra of lyocell tow before and after cleaning with a functional additive including TEC dispersed therein
- FIG. 5 is a graph comparing the FT-IR spectra of lyocell tow before and after cleaning with a functional additive including TA dispersed therein
- FIG. 6 is a graph comparing the FT-IR spectra of lyocell tow before and after cleaning with a functional additive including TA and TEC dispersed therein
- FIG. 7 is a graph comparing the FT-IR spectra of lyocell tow before and after cleaning with a functional additive including PEG and TEC dispersed therein
- FIG. 8 is a graph comparing the FT-IR spectra of lyocell tow before and after cleaning with a functional additive including TA and PEG dispersed therein. This graph compares the FT-IR spectra of lyocell tow before and after cleaning
- FIG. 9 is a graph comparing the FT-IR spectra of lyocell tow in which functional additives including TA, TEC, and PEG are dispersed before and after cleaning.
- FIG. 10 is a graph comparing the FT-IR spectra of cellulose acetate tow before and after cleaning in which no functional additive is dispersed
- FIG. 11 is a graph comparing the FT-IR spectra of cellulose acetate tow before and after cleaning in which a functional additive including PEG is dispersed
- FIG. 12 is a graph comparing the FT-IR spectra of cellulose acetate tow before and after cleaning in which a functional additive including TEC is dispersed
- FIG. 13 is a graph comparing the FT-IR spectra of cellulose acetate tow before and after cleaning in which a functional additive including TA is dispersed
- FIG. 10 is a graph comparing the FT-IR spectra of cellulose acetate tow before and after cleaning in which no functional additive is dispersed
- FIG. 11 is a graph comparing the FT-IR spectra of cellulose acetate tow before and after cleaning in which a functional additive including PEG is dispersed
- FIG. 14 is a graph comparing the FT-IR spectra of cellulose acetate tow before and after cleaning in which a functional additive including TA and TEC is dispersed
- FIG. 15 is a graph comparing the FT-IR of cellulose acetate tow before and after cleaning in which a functional additive including PEG and TEC is dispersed.
- a graph comparing spectra is shown
- FIG. 16 is a graph comparing FT-IR spectra of cellulose acetate tow having a functional additive including TA and PEG dispersed therein before and after cleaning
- FIG. 17 is a graph comparing FT-IR spectra of cellulose acetate tow having a functional additive including TA, TEC, and PEG dispersed therein before and after cleaning.
- FIG. 18 is a graph showing the height of the first vibration peak and the height of the second vibration peak in the FT-IR spectrum of lyocell tow in which a functional additive including PEG is dispersed
- FIG. 19 is a graph showing the height of the first vibration peak and the height of the second vibration peak in the FT-IR spectrum of the washed lyocell tow (the lyocell tow of FIG. 18) after washing the functional additive including PEG is dispersed.
- FIG. 20 is a graph showing the height of the first vibration peak and the height of the second vibration peak in the FT-IR spectrum of lyocell tow in which a functional additive including TEC and PEG is dispersed
- FIG. 21 is a graph showing the height of the first vibration peak and the height of the second vibration peak in the FT-IR spectrum of the washed lyocell tow (the lyocell tow of FIG. 20) after washing the functional additive including TEC and PEG dispersed therein.
- FIG. 22 is a graph showing the height of the first vibration peak and the height of the second vibration peak in the FT-IR spectrum of lyocell tow in which functional additives including TA, TEC, and PEG are dispersed
- FIG. 23 is a graph showing the height of the first vibration peak and the height of the second vibration peak in the FT-IR spectrum of the washed lyocell tow (the lyocell tow of FIG. 22) after washing the functional additives including TA, TEC, and PEG are dispersed.
- FIG. 24 is a graph showing the height of the third vibration peak and the height of the second vibration peak in the FT-IR spectrum of cellulose acetate tow in which a functional additive including PEG is dispersed
- FIG. 25 is a graph showing the height of the third vibration peak and the height of the second vibration peak in the FT-IR spectrum of the washed cellulose acetate tow (cellulose acetate tow of FIG. 24) in which a functional additive including PEG is dispersed is washed.
- FIG. 26 is a graph showing the height of the third vibration peak and the height of the second vibration peak in the FT-IR spectrum of cellulose acetate tow in which a functional additive including TEC and PEG is dispersed
- FIG. 27 is a graph showing the height of the third vibration peak and the height of the second vibration peak in the FT-IR spectrum of the washed cellulose acetate tow (cellulose acetate tow of FIG. 26) in which a functional additive including TEC and PEG is dispersed is washed.
- FIG. 28 is a graph showing the height of the third vibration peak and the height of the second vibration peak in the FT-IR spectrum of cellulose acetate tow having a functional additive including TA, TEC, and PEG dispersed therein
- FIG. 29 is a graph showing the height of the third vibration peak and the height of the second vibration peak in the FT-IR spectrum of the washed cellulose acetate tow (cellulose acetate tow of FIG. 28) after washing the cellulose acetate tow having a functional additive including TA, TEC, and PEG dispersed therein.
- the FT-IR spectrum obtained by analyzing lyocell tow in which a functional additive including a phenol-reducing substance is dispersed and the FT-IR spectrum obtained by analyzing washed lyocell tow in which the functional additive is dispersed and washed with a detergent are used, thereby explaining that there is no chemical change in lyocell fiber due to the phenol-reducing substance included in the functional additive.
- a filter for smoking articles was manufactured using lyocell tow with 20uL of PEG 600 added to satisfy the conditions of a suction resistance of 405 mmWG, a length of 108 mm, and a circumference of 24.2 mm.
- a filter for a smoking article was prepared in the same manner as in Example 1, except that TEC was added instead of PEG 600 to the lyocell tow (i.e., 20 uL of TEC).
- a filter for a smoking article was prepared in the same manner as in Example 1, except that TA was added instead of PEG 600 to the lyocell tow (i.e., TA 20 uL).
- a filter for a smoking article was manufactured in the same manner as in Example 1, except that instead of PEG 600 in the lyocell tow, the total weight of TA and TEC was 20 uL, and the content was added in a 1:1 ratio (i.e., TA and TEC were each added in 10 uL).
- Example 5 (Lyocell tow + PEG 600 + TEC)
- a filter for a smoking article was manufactured in the same manner as in Example 1, except that instead of PEG 600 in the lyocell tow, PEG 600 and TEC were added in a total weight of 20 uL and the content was 1:1.
- Example 6 (Lyocell tow + PEG 600 + TA)
- a filter for a smoking article was manufactured in the same manner as in Example 1, except that the total weight of PEG 600 and TA was 20 uL instead of PEG 600 in the lyocell tow and the content was added in a 1:1 ratio.
- Example 7 (Lyocell tow + PEG 600 + TA + TEC)
- a filter for a smoking article was manufactured in the same manner as in Example 1, except that the total weight of TA, TEC, and PEG 600 was 20 uL instead of PEG 600 in the lyocell tow, and the contents of TA, TEC, and PEG were added in a ratio of 1:1:1.
- a filter for a smoking article was manufactured in the same manner as in Example 1, except that no functional additive was added to the lyocell tow.
- the lyocell tow portion was extracted from the smoking article filters of Examples 1 to 7, and the FT-IR spectra (hereinafter referred to as “FT-IR spectra before cleaning”) were measured for the lyocell tow with added functional additives and the lyocell tow of Comparative Example 1 without added functional additives, respectively.
- FT-IR spectra after cleaning the FT-IR spectra after cleaning
- the FT-IR spectra (FT-IR spectra before cleaning) for the lyocell tow manufactured in each of Examples 1 to 7 and Comparative Example 1 and the FT-IR spectra (FT-IR spectra after cleaning) for the lyocell tow manufactured in each of Examples 1 to 7 and Comparative Example 1 after cleaning with hexane were compared, and the results are shown in FIGS. 3 to 9 and FIG. 2, respectively.
- the FT-IR spectra shown at the top in FIGS. 2 to 9 are FT-IR spectra for the lyocell tow before cleaning
- the FT-IR spectra shown at the bottom in FIGS. 2 to 9 are FT-IR spectra for the lyocell tow after cleaning.
- the FT-IR spectrum of the lyocell tow before cleaning shows a vibration peak with a significantly higher height at 1738.22 cm -1 located within the range of 1735 cm -1 to 1745 cm -1 compared to the FT-IR spectrum of the lyocell tow before cleaning, shown in the upper part of FIG. 2, and the FT-IR spectrum of the lyocell tow before cleaning, shown in the upper part of FIG. 4, shows a vibration peak with a significantly higher height at 1737.23 cm -1 located within the range of 1735 cm -1 to 1745 cm -1 compared to the FT-IR spectrum of the lyocell tow before cleaning, shown in the upper part of FIG.
- a filter for a smoking article was manufactured in the same manner as in Comparative Example 1, except that cellulose acetate tow without any functional additives was used instead of lyocell tow.
- a filter for smoking articles was manufactured in the same manner as in Comparative Example 2, except that 20 uL of PEG 600 was added to the cellulose acetate tow.
- a filter for smoking articles was manufactured in the same manner as in Comparative Example 3, except that TEC was added instead of PEG 600 to cellulose acetate tow.
- a filter for a smoking article was manufactured in the same manner as in Comparative Example 3, except that TA was added instead of PEG 600 to the cellulose acetate tow.
- a filter for a smoking article was manufactured in the same manner as in Comparative Example 3, except that the total weight of TA and TEC was 20 uL and the content was added in a 1:1 ratio (i.e., TA and TEC were each added in an amount of 10 uL).
- a filter for smoking articles was manufactured in the same manner as in Comparative Example 3, except that instead of PEG 600, PEG 600 and TEC were added in a total weight of 20 uL and the content was 1:1 to the cellulose acetate tow.
- a filter for smoking articles was manufactured in the same manner as in Comparative Example 3, except that instead of PEG 600, PEG 600 and TA were added in a total weight of 20 uL and the content was 1:1 to the cellulose acetate tow.
- a filter for a smoking article was manufactured in the same manner as in Comparative Example 3, except that the total weight of TA, TEC, and PEG 600 was 20 uL instead of PEG 600 in the cellulose acetate tow, and the contents of TA, TEC, and PEG were added in a ratio of 1:1:1.
- the cellulose acetate tow portion was extracted from the smoking article filters of Comparative Examples 3 to 9, and the FT-IR spectra (hereinafter referred to as “FT-IR spectra before cleaning”) were measured for the cellulose acetate tow to which the functional additive was added and the cellulose acetate tow of Comparative Example 2 to which the functional additive was not added, and the FT-IR spectra (hereinafter referred to as “FT-IR spectra after cleaning”) for the cellulose acetate tow of Comparative Examples 2 to 9 were cleaned using hexane, and the FT-IR spectra (hereinafter referred to as “FT-IR spectra after cleaning”) for the cleaned cellulose acetate tow were
- the FT-IR spectra (FT-IR spectra before cleaning) for the cellulose acetate tow manufactured in each of Comparative Examples 2 to 9 and the FT-IR spectra (FT-IR spectra after cleaning) for the cellulose acetate tow manufactured in each of Comparative Examples 2 to 9 after cleaning with hexane are compared, and the results are shown in FIGS. 10 to 17, respectively.
- the FT-IR spectra shown at the top in FIGS. 10 to 17 are FT-IR spectra for the cellulose acetate tow before cleaning, and the FT-IR spectra shown at the bottom in FIGS. 10 to 17 are FT-IR spectra for the cellulose acetate tow after cleaning.
- the functional additive including at least one of TA, TEC, and PEG is added to the cellulose acetate tow, it can be indirectly confirmed that the cellulose acetate tow is chemically modified by the functional additive and that the functional additive and the cellulose acetate tow are chemically bonded.
- FT-IR was measured before and after cleaning for lyocell tow having functional additives obtained in Examples 1, 5, and 7 in the same manner as in Experimental Example 1, and each FT-IR spectrum was analyzed to measure the height (H1) of the first vibration peak within the range of 1645 cm -1 to 1650 cm -1 , and the height (H2) of the second vibration peak within the range of 1735 cm -1 to 1745 cm -1 (see FIGS. 18 to 23), and the ratio of the height (H2) of the second vibration peak to the height (H1) of the first vibration peak (H2/H1) was calculated, respectively, and listed in Table 1.
- FT-IR was measured before and after cleaning for cellulose acetate tows containing functional additives obtained in Comparative Examples 3, 7, and 9 in the same manner as in Experimental Example 1, and each FT-IR spectrum was analyzed to measure the height (H3) of the third vibration peak within the range of 1220 cm -1 to 1230 cm -1 , and the height (H2) of the second vibration peak within the range of 1735 cm -1 to 1745 cm -1 (see FIGS. 24 to 29), and the ratio of the height (H2) of the second vibration peak to the height (H3) of the third vibration peak (H2/H1) was calculated, respectively, and listed in Table 2.
- the third vibration peak within the range of 1220 cm -1 to 1230 cm -1 may be a vibration peak corresponding to the acetate peak, i.e., a reference value, for defining similar parameters of lyocell tow.
- the ratio of the height of the second vibration peak (H2) to the height of the first vibration peak (H1) calculated from the FT-IR spectrum of the lyocell tow with the functional additive added before cleaning (H2/H1) is greater than 1, being 1.03, 6.88, and 19.05 in Examples 1, 5, and 7, respectively, and the ratio of the height of the second vibration peak (H2) to the height of the first vibration peak (H1) calculated from the FT-IR spectrum of the lyocell tow with the functional additive added after cleaning (H2/H1) is less than 1, being 0.65, 0.80, and 0.63 in Examples 1, 5, and 7, respectively.
- the lyocell tow with the functional additive added including at least one or more of PEG, TEC, and TA has the phenol-reducing substance added to the functional additive washed away by washing. That is, it can be indirectly confirmed that, despite the addition of a phenol-reducing substance to lyocell tow, no chemical transformation occurs in the lyocell tow due to the phenol-reducing substance.
- the ratio of the height of the second vibration peak (H2) to the height of the third vibration peak (H3) calculated from the FT-IR spectrum of the cellulose acetate tow with the functional additive added before cleaning (H2/H3) is less than 1, which is 0.57, 0.59, and 0.69 in Comparative Examples 3, 7, and 9, respectively
- the ratio of the height of the second vibration peak (H2) to the height of the third vibration peak (H3) calculated from the FT-IR spectrum of the cellulose acetate tow with the functional additive added after cleaning (H2/H3) is 2.67, 0.61, and 0.53 in Comparative Examples 3, 7, and 9, respectively, which is less than or greater than 1.
- the cellulose acetate tow to which the functional additive including at least one of PEG, TEC, and TA is added substantially maintains the binding relationship between the phenol-reducing material added to the functional additive by cleaning and the cellulose acetate tow. That is, when the phenol-reducing material is added to the cellulose acetate tow, it can be indirectly confirmed that a chemical transformation occurs in the cellulose acetate tow by the phenol-reducing material because it is not cleaned by the cleaning agent.
- FIG. 1 provides a drawing showing a schematic configuration of a smoking article according to one specific example of the present invention.
- the smoking article (100) includes a smoking material portion (10) and a filter portion (20), and the filter for smoking articles described above can be applied to the filter portion (20) of the smoking article (100).
- the smoking material portion (10) is located upstream compared to the filter portion (20).
- the above smoking material portion (10) can be filled with a smoking material such as raw leaf tobacco, sheet tobacco, or a mixture of leaf tobacco and sheet tobacco.
- the processed smoking material can be filled in the smoking material portion (10) in a sheet form or a piece of paper.
- the smoking material portion (10) can have an elongated rod form, and its length, circumference, and diameter are not particularly limited, but can be adjusted to a size generally used in the relevant technical field in consideration of the amount of smoking material filled, the user's preference, etc.
- the smoking material portion (10) can include at least one aerosol-generating material among glycerin, propylene glycol, ethylene glycol, dipropylene glycol, diethylene glycol, triethylene glycol, tetraethylene glycol, and oleyl alcohol.
- the smoking material portion (10) can contain other additives such as a flavoring agent, a humectant, and/or an acetate compound.
- the aerosol-generating material and the additives can be contained in the smoking material.
- the filter unit (20) is arranged downstream of the smoking material unit (10) and functions as a filter through which aerosol material generated from the smoking material unit (10) passes immediately before the user inhales it.
- the filter unit (20) can be manufactured from various materials or shapes.
- the filter unit (20) according to one specific example of the present invention basically includes the above-described smoking article filter including lyocell tow including a plurality of lyocell fibers and triethyl citrate (TEC) dispersed on the lyocell tow.
- the smoking article filter including lyocell tow and triethyl citrate (TEC) can replace all or part of the filter unit (20) of an existing smoking article, and when replacing part of it, a previously used filter material can be used together.
- Existing filter materials for example, a cellulose acetate filter, a paper filter, a hollow tube filter, etc. can be used.
- the filter unit (20) is illustrated as a mono filter consisting of a single filter, but is not limited thereto.
- the filter unit (20) may be provided as a dual filter or triple filter having two or more filters to increase filter efficiency.
- one of the plurality of filters may be a filter including lyocell tow including the lyocell fiber of the present invention and triethyl citrate (TEC) dispersed in the lyocell tow (hereinafter, “Lyocell filter”), and another filter among the plurality of filters may be a cellulose acetate filter and/or a paper filter.
- the length of the lyocell filter of the present invention may be 25% to 50% of the total length of the filter unit (20).
- the smoking article (100) may further include a hollow tube structure, which is a tube-shaped structure including a hollow space inside.
- the hollow tube structure may be placed downstream of a filter section (20) including a lyocell filter.
- the hollow tube structure may have perforations formed therein, but is not limited thereto.
- the hollow tube structure may not have perforations formed therein.
- the perforations may be formed at a position 10 mm to 15 mm upstream from the downstream end of the smoking article (100).
- the exterior of the above smoking material portion (10) and filter portion (20) can be wrapped by a wrapper (30a or 30b).
- the above smoking material portion (10) may be wrapped by a smoking material portion wrapper (30a). Some of the cigarette smoke generated during the combustion process of a typical smoking material portion (10) is released into the atmosphere through the smoking material portion wrapper (30a) before passing through the filter portion (20), and the side smoke causes discomfort to passive smokers.
- Various attempts have been made to reduce such side 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 wrapper (30a) may be applied with a filler mixed with magnesium oxide (MgO and/or Mg(OH) 2 ) and calcium carbonate (CaCO 3 ) to reduce side smoke while preventing smoke taste, burn-off, and burn-out.
- MgO and/or Mg(OH) 2 magnesium oxide
- CaCO 3 calcium carbonate
- the above filter part (20) can be wrapped by a filter part wrapper (30b).
- the filter part wrapper (30b) can be made of a paper having oil resistance, and the inner surface of the filter part wrapper (30b) may further include aluminum foil.
- the filter part wrapper (30b) can have a basis weight of 90 mg -2 or less, but is not limited thereto.
- the smoking material portion (10) wrapped by the smoking material portion wrapper (30a) and the filter portion (20) wrapped by the filter portion wrapper (30b) can be combined and wrapped by the tip paper (40).
- the tip paper (40) can be wrapped around at least a portion (for example, a downstream portion) of the smoking material portion wrapper (30a) and the periphery of the filter portion wrapper (30b) as illustrated in FIG. 1.
- at least a portion of the smoking material portion (10) and the filter portion (20) can be further wrapped and physically combined by the tip paper (40).
- the tip paper (40) can be made of nonporous paper that has not been oil-resistant treated, but is not limited thereto.
- the tip paper (40) can prevent the filter portion (20) from burning by including a non-combustible material, but 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)
Abstract
Description
| 세정 전 | 세정 후 | |||||
| H1 | H2 | H2/H1 | H1 | H2 | H2/H1 | |
| 실시예1 | 0.33 | 0.34 | 1.03 | 0.26 | 0.17 | 0.65 |
| 실시예5 | 0.24 | 1.65 | 6.88 | 0.35 | 0.28 | 0.80 |
| 실시예7 | 0.19 | 3.62 | 19.05 | 0.36 | 0.24 | 0.63 |
| 세정 전 | 세정 후 | |||||
| H3 | H2 | H2/H3 | H3 | H2 | H2/H3 | |
| 비교예3 | 2.17 | 1.23 | 0.57 | 3.11 | 8.22 | 2.64 |
| 비교예7 | 3.07 | 1.82 | 0.59 | 4.72 | 2.87 | 0.61 |
| 비교예9 | 6.55 | 4.57 | 0.69 | 4.40 | 2.35 | 0.53 |
Claims (10)
- 복수개의 라이오셀 섬유를 포함하는 라이오셀 토우; 및상기 라이오셀 토우에 분산된 기능성 첨가제를 포함하되,상기 복수개의 라이오셀 섬유 중 적어도 일부는 상기 기능성 첨가제에 의해 화학적으로 변형(chemically modified)되지 않고,상기 기능성 첨가제가 분산된 상기 라이오셀 토우의 FT-IR 스페트럼은 1645 cm-1 내지 1650 cm-1 범위 내의 진동 피크(vibration peak)인 제1 진동 피크가 나타나는,흡연 물품용 필터.
- 제1 항에 있어서,상기 기능성 첨가제는 유제 및 페놀류 저감 물질을 포함하되,상기 페놀류 저감 물질은 폴리에틸렌 글리콜(polyethylene glycol; PEG), 트리에틸 시트레이트(triethyl citrate; TEC), 및 트리아세틴(triacetin; TA) 중 적어도 하나 이상을 포함하는,흡연 물품용 필터.
- 제1항에 있어서,상기 기능성 첨가제가 분산된 상기 라이오셀 토우의 상기 FT-IR 스페트럼은 1735 cm-1 내지 1745 cm-1 범위 내의 진동 피크인 제2 진동 피크가 더 나타나는,흡연 물품용 필터.
- 제3 항에 있어서,FT-IR 스펙트럼에서 상기 제1 진동 피크의 높이에 대한 상기 제2 진동 피트의 높이의 비율로 파라미터(PCF)가 정의되고,상기 기능성 첨가제가 분산된 상기 라이오셀 토우의 상기 FT-IR 스페트럼에서 파라미터 값은 상기 기능성 첨가제가 분산된 상기 라이오셀 토우를 세정제를 이용하여 세정한 세정된 라이오셀 토우의 FT-IR 스펙트럼에서 파라미터 값보다 크거나 같은,흡연 물품용 필터.
- 제3 항에 있어서,FT-IR 스펙트럼에서 상기 제1 진동 피크의 높이에 대한 상기 제2 진동 피트의 높이의 비율로 파라미터(PCF)가 정의되고,상기 기능성 첨가제가 분산된 상기 라이오셀 토우의 상기 FT-IR 스페트럼에서 파라미터 값은 1 이상 20 이하의 범위를 가지는,흡연 물품용 필터.
- 제5 항에 있어서,상기 기능성 첨가제가 분산된 상기 라이오셀 토우를 세정제를 이용하여 세정한 후, 상기 세정된 라이오셀 토우의 FT-IR 스페트럼에서 파라미터 값은 1 이하의 값을 가지는,흡연 물품용 필터.
- 복수개의 라이오셀 섬유를 포함하는 라이오셀 토우; 및상기 라이오셀 토우에 분산된 기능성 첨가제를 포함하되,상기 복수개의 라이오셀 섬유 중 적어도 일부는 상기 기능성 첨가제에 의해 화학적으로 변형(chemically modified)되지 않고,상기 기능성 첨가제가 분산된 상기 라이오셀 토우의 FT-IR 스페트럼은 C-H 결합에 해당하는 진동 피크(vibration peak)인 제1 진동 피크가 나타나는,흡연 물품용 필터.
- 제7 항에 있어서,상기 기능성 첨가제가 분산된 상기 라이오셀 토우의 상기 FT-IR 스페트럼은 C=O 결합에 해당하는 진동 피크(vibration peak)인 제2 진동 피크가 더 나타나는,흡연 물품용 필터.
- 제8 항에 있어서,FT-IR 스펙트럼에서 상기 제1 진동 피크의 높이에 대한 상기 제2 진동 피트의 높이의 비율로 파라미터(PCF)가 정의되고,상기 기능성 첨가제가 분산된 상기 라이오셀 토우의 상기 FT-IR 스페트럼에서 파라미터 값은, 상기 기능성 첨가제가 분산된 상기 라이오셀 토우를 세정제를 이용하여 세정한 세정된 라이오셀 토우의 FT-IR 스펙트럼에서 파라미터 값보다 큰,흡연 물품용 필터.
- 흡연물질부, 필터부, 및 래퍼를 포함하는 흡연 물품에 있어서,상기 필터부는,복수개의 라이오셀 섬유를 포함하는 라이오셀 토우, 및상기 라이오셀 토우에 분산된 기능성 첨가제를 포함하되,상기 복수개의 라이오셀 섬유 중 적어도 일부는 상기 기능성 첨가제에 의해 화학적으로 변형(chemically modified)되지 않고,상기 기능성 첨가제가 분산된 상기 라이오셀 토우의 FT-IR 스페트럼은 1645 cm-1 내지 1650 cm-1 범위 내의 진동 피크(vibration peak)인 제1 진동 피크가 나타나는,흡연 물품.
Priority Applications (3)
| Application Number | Priority Date | Filing Date | Title |
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| JP2025527676A JP2025536075A (ja) | 2023-02-03 | 2024-02-02 | 化学修飾されないリヨセル繊維を含む喫煙物品用フィルター、およびこれを含む喫煙物品 |
| EP24750620.7A EP4544932A4 (en) | 2023-02-03 | 2024-02-02 | Smoking filter comprising a chemically unmodified lyocell fiber, and smoking article comprising it |
| CN202480006424.0A CN120456839A (zh) | 2023-02-03 | 2024-02-02 | 包含未被化学改性的莱赛尔纤维的用于吸烟制品的过滤嘴及包括其的吸烟制品 |
Applications Claiming Priority (4)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| KR20230014850 | 2023-02-03 | ||
| KR10-2023-0014850 | 2023-02-03 | ||
| KR10-2024-0013740 | 2024-01-30 | ||
| KR1020240013740A KR20240122340A (ko) | 2023-02-03 | 2024-01-30 | 화학적으로 변형되지 않은 라이오셀 섬유를 포함하는 흡연 물품용 필터, 및 이를 포함하는 흡연 물품 |
Publications (1)
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| WO2024162823A1 true WO2024162823A1 (ko) | 2024-08-08 |
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| PCT/KR2024/001604 Ceased WO2024162823A1 (ko) | 2023-02-03 | 2024-02-02 | 화학적으로 변형되지 않은 라이오셀 섬유를 포함하는 흡연 물품용 필터, 및 이를 포함하는 흡연 물품 |
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| JP (1) | JP2025536075A (ko) |
| CN (1) | CN120456839A (ko) |
| TW (1) | TW202500026A (ko) |
| WO (1) | WO2024162823A1 (ko) |
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| WO2025143826A1 (ko) * | 2023-12-27 | 2025-07-03 | 주식회사 케이티앤지 | 흡연 물품용 필터 및 이를 포함하는 흡연 물품 |
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| KR20160104962A (ko) * | 2015-02-27 | 2016-09-06 | 주식회사 케이티앤지 | 라이오셀 토우를 포함하는 담배 필터 및 이의 제조방법 |
| KR20190048385A (ko) * | 2017-10-31 | 2019-05-09 | 주식회사 케이티앤지 | 담배 필터, 이의 제조방법 및 이를 포함하는 담배 |
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| JP2004043554A (ja) * | 2002-07-09 | 2004-02-12 | Konishi Co Ltd | 水性固形接着剤および該水性固形接着剤による接着方法 |
| CN104411189A (zh) * | 2012-07-13 | 2015-03-11 | 菲利普莫里斯生产公司 | 用于吸烟制品的可降解型过滤嘴 |
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| EP3439639A1 (en) * | 2016-04-08 | 2019-02-13 | Shionogi & Co., Ltd. | Stabilized solid dosage form |
| EP4161300A1 (en) * | 2020-06-04 | 2023-04-12 | R. J. Reynolds Tobacco Company | Paper sheet filter element for a smoking article, and associated method |
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2024
- 2024-02-01 TW TW113104036A patent/TW202500026A/zh unknown
- 2024-02-02 CN CN202480006424.0A patent/CN120456839A/zh active Pending
- 2024-02-02 EP EP24750620.7A patent/EP4544932A4/en active Pending
- 2024-02-02 JP JP2025527676A patent/JP2025536075A/ja active Pending
- 2024-02-02 WO PCT/KR2024/001604 patent/WO2024162823A1/ko not_active Ceased
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| KR20160041664A (ko) * | 2014-10-08 | 2016-04-18 | 주식회사 케이티앤지 | 담배 필터 및 이의 제조방법 |
| KR20160104962A (ko) * | 2015-02-27 | 2016-09-06 | 주식회사 케이티앤지 | 라이오셀 토우를 포함하는 담배 필터 및 이의 제조방법 |
| KR20190048385A (ko) * | 2017-10-31 | 2019-05-09 | 주식회사 케이티앤지 | 담배 필터, 이의 제조방법 및 이를 포함하는 담배 |
| WO2022018180A1 (de) * | 2020-07-22 | 2022-01-27 | Delfortgroup Ag | Plissiertes filtermaterial für rauchartikel |
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| See also references of EP4544932A4 * |
Also Published As
| Publication number | Publication date |
|---|---|
| EP4544932A4 (en) | 2025-12-24 |
| EP4544932A1 (en) | 2025-04-30 |
| CN120456839A (zh) | 2025-08-08 |
| JP2025536075A (ja) | 2025-10-30 |
| TW202500026A (zh) | 2025-01-01 |
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