EP4226780A1 - Filtre de refroidissement et article à fumer le comprenant - Google Patents

Filtre de refroidissement et article à fumer le comprenant Download PDF

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Publication number
EP4226780A1
EP4226780A1 EP22879582.9A EP22879582A EP4226780A1 EP 4226780 A1 EP4226780 A1 EP 4226780A1 EP 22879582 A EP22879582 A EP 22879582A EP 4226780 A1 EP4226780 A1 EP 4226780A1
Authority
EP
European Patent Office
Prior art keywords
filter
cellulose
cooling
cooling filter
smoking article
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
EP22879582.9A
Other languages
German (de)
English (en)
Inventor
Min.Hee HWANG
Kyoung Hwan Oh
Moon Won Kim
Yongmi JUNG
Man Seok Seo
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.)
KT&G Corp
Original Assignee
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
Application filed by KT&G Corp filed Critical KT&G Corp
Publication of EP4226780A1 publication Critical patent/EP4226780A1/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 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
    • A24D1/00—Cigars; Cigarettes
    • A24D1/04—Cigars; Cigarettes with mouthpieces or filter-tips
    • A24D1/042—Cigars; Cigarettes with mouthpieces or filter-tips with mouthpieces
    • 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
    • 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 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
    • 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
    • A24D3/067—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 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
    • 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
    • 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
    • A24D3/14—Use of materials for tobacco smoke filters of organic materials as additive
    • 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
    • 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
    • A24D3/17—Filters 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
    • A24D1/00—Cigars; Cigarettes
    • A24D1/20—Cigarettes specially adapted for simulated smoking devices

Definitions

  • the present disclosure relates to a cooling filter and a smoking article including the same.
  • a heating type stick article is needed to be heated using a dedicated device to express a smoke flavor of a medium portion (including a smoke flavor and aerosol generating articles containing tobacco raw materials such as cuts and the like and fragrance).
  • a temperature program is designed to perform high-temperature heating considering thermal transfer to the inside of the medium portion.
  • a heating temperature is usually approximately between 200°C and 400°C and a large amount of water vapor is generated when the stick of the medium portion is heated through the device, unlike traditional cigarettes which burn the cuts for the inhalation.
  • a temperature inside the medium portion expressed through the heating is approximately between 100°C to 200°C.
  • a temperature of an airflow generated inside the medium portion is also similar, and a smoker may inhale the hot heat, if there is no cooling material downstream of the medium portion.
  • Patent Document 1 Korean Laid-open Patent Publication No. 2021-0104501
  • the present disclosure provides a cooling filter that has an excellent cooling effect due to phase transition and is easily decomposed at the time of disposal.
  • the present disclosure provides a smoking article including the cooling filter according to the present disclosure.
  • a cooling filter including a coating layer, in which the coating layer contains alkaline metal chloride.
  • the coating layer may have a basis weight of 1% to 30% of a basis weight of the filter and contain alkaline metal chloride.
  • the alkaline metal chloride may be one or more kinds selected from a group consisting of sodium chloride, potassium chloride, and lithium chloride.
  • the coating layer may further include one or more kinds selected from a group consisting of cellulose, a cellulose derivative, an alcohol resin, and sugars.
  • the cellulose derivative may be one or more kinds selected from a group consisting of methyl cellulose, ethyl cellulose, carboxymethyl cellulose, carboxyethyl cellulose, hydroxymethyl cellulose, hydroxyethyl cellulose, hydroxypropyl cellulose, hydroxypropylmethyl cellulose, hydroxyethylmethyl cellulose, and agar.
  • the alcohol resin may be polyvinyl alcohol.
  • the sugars may be one or more kinds selected from a group consisting of sugar alcohol, monosaccharide, disaccharide, oligosaccharide, and polysaccharide.
  • the cellulose, cellulose derivative, alcohol resin, or sugars may be coated with a basis weight of 0.1% to 15% of a basis weight of the filter.
  • the filter may have a tubular shape with a hollow formed inside and the coating layer may be formed on a surface of the hollow.
  • the filter may include one or more materials selected from a group consisting of paper, a polymer, and cellulose acetate.
  • the cooling filter may have a length of 5 millimeters (mm) or more and a circumference of 14 to 27 mm.
  • the cooling filter may have draw resistance of 0.1 to 3.5 mmH2O per millimeter.
  • a smoking article including a smoking material portion; a cooling portion including a cooling filter according to the present disclosure positioned downstream of the smoking material portion; and a mouthpiece portion positioned downstream of the cooling portion.
  • the smoking article is heating type tobacco and may be in the form of a cigarette.
  • the cooling filter coated with a material having endothermic and hygroscopic properties is inserted to a downstream portion of the smoking material portion of the smoking article, thereby providing a smoking article having an effective cooling function and improved tobacco taste and long-lasting smoke flavor.
  • upstream a portion where the air flows to the inside from the outside of the smoking article
  • downstream a portion where the air flows out to the outside from the inside of the smoking article including a combustible heat source
  • upstream and downstream may be used to indicate a relative position or orientation between portions or segments constituting the smoking article.
  • the filter in a cooling filter 120, may include a coating layer and the coating layer contains an alkaline metal chloride.
  • the cooling filter 120 of the present disclosure may have a tubular shape with a hollow 120H formed inside.
  • the coating layer is formed on a surface of the hollow inside thereof, that is, a flow path through which gas introduced from an upstream side passes.
  • the coating layer has a basis weight of 1% to 30% of a basis weight of the filter and contains alkaline metal chloride.
  • the alkaline metal chloride may dissolve by moisture generated at the time of heating the smoking article and cause an endothermic reaction which may provide an airflow cooling effect.
  • the cooling filter may be used as an environment-friendly product.
  • the alkaline metal chloride may be one or more kinds selected from a group consisting of sodium chloride, potassium chloride, and lithium chloride.
  • sodium chloride is desirably used as the alkaline metal chloride.
  • the sodium chloride has a property advantageous to lower a temperature of a mainstream smoke due to occurrence of an endothermic reaction due to moisture absorption, as the sodium chloride may absorb moisture contained in the airflow at the time of smoking.
  • the coating layer may further include one or more kinds selected from a group consisting of cellulose, a cellulose derivative, an alcohol resin, and sugars
  • the cellulose derivative may be one or more kinds selected from a group consisting of methyl cellulose, ethyl cellulose, carboxymethyl cellulose, carboxyethyl cellulose, hydroxymethyl cellulose, hydroxyethyl cellulose, hydroxypropyl cellulose, hydroxypropylmethyl cellulose, hydroxyethylmethyl cellulose, and agar
  • the alcohol resin may be polyvinyl alcohol, but these are not limited thereto.
  • the sugars may be one or more kinds selected from a group consisting of sugar alcohol, monosaccharide, disaccharide, oligosaccharide, and polysaccharide but are not limited thereto.
  • the sugar alcohol may be sorbitol, xylitol, mannitol, maltitol, or lactitol
  • the monosaccharide may be fructose, glucose, or galactose
  • the disaccharide may be sucrose, lactose, or maltose
  • the polysaccharide may be starch, dietary fibers, or glycogen.
  • the phase transition occurs at a temperature level of the airflow generated at the time of smoking, which enables the endothermic reaction. Accordingly, when the materials described above are used in addition to alkaline metal chloride, the cooling effect may be further improved.
  • the cellulose, cellulose derivative, alcohol resin, or sugars may be coated with a basis weight of 1% to 15% of a basis weight of the filter and desirably coated with a basis weight of 0.5% to 1.5%.
  • the basis weight is included in the above range, the cooling effect may be further improved.
  • the cooling filter 120 may be made of a material such as paper, polymer, or cellulose acetate.
  • the material may be desirably paper but is not limited thereto.
  • the cooling filter may be changed in shape, thickness, length, and the like depending on the applied smoking article, and may desirably have a length of 5 mm or more and a circumference of 14 to 27 mm. When the above length and circumference are obtained, there is no effect on a smoke flavor of the smoking while effectively lowering a temperature of gas generated due to the heating of a smoking material.
  • the material of the cooling filter may be paper and may include, specifically, a paper tube.
  • the paper used for the paper tube may have a basis weight of 10 to 500 g/m 2 , but is not limited thereto.
  • the paper may more desirably have a basis weight of 30 to 300 g/m 2 .
  • the cooling filter may have draw resistance of 0.1 to 3.5 mm H 2 O per millimeter. As the draw resistance in the above range is obtained, the smoking article of the present disclosure has an excellent effect in sucking property.
  • the present disclosure relates to a smoking article including the cooling filter according to the present disclosure.
  • the "smoking article” refers to a cigarette, a tobacco derivative, expanded tobacco, reconstituted tobacco, any product that may be used for smoking regardless whether it is based on a tobacco substitute, or any product capable of providing a smoking experience.
  • the smoking article may refer to a smokable product capable of generating an aerosol such as a heating type electronic cigarette.
  • the smoking article 100 may include a smoking material portion 110; a cooling portion including the cooling filter 120 according to the present disclosure positioned downstream of the smoking material portion; and a mouthpiece portion 130 positioned downstream of the cooling portion.
  • the smoking material portion 110; the cooling portion including the cooling hollow filter 120; and the mouthpiece portion 130 may be connected in a longitudinal direction. That is, the mouthpiece portion 130 may be positioned at a most downstream side of the smoking material portion 110, that is, in a direction closest to a smoker, and the smoking material portion may be positioned on a most upstream side, that is, a direction (an upstream direction) farthest from the smoker.
  • the smoking article is a smoking article including a hollow filter in the cooling portion.
  • the configuration of the cooling portion including only the hollow filter according to the present disclosure as described above is merely an example, and the cooling portion may further include other cooling elements other than the hollow filter.
  • the smoking article includes an aerosol generating material.
  • the aerosol generating material refers to a material capable of generating an aerosol and may be in a solid or liquid state.
  • a solid aerosol generating material may include a solid substance based on tobacco raw materials such as plate-shaped leaf tobacco, cut tobacco, or reconstituted tobacco
  • a liquid aerosol generating substrate may include a liquid composition based on nicotine, tobacco extracts, and/or various flavoring agents.
  • the scope of the present disclosure is not limited to the examples listed above.
  • the liquid aerosol generating material may include, as more specific examples, at least one of propylene glycol (PG) or glycerin (GLY) and may further include at least one of ethylene glycol, dipropylene glycol, diethylene glycol, triethylene glycol, tetraethylene glycol, or oleyl alcohol.
  • the aerosol generating material may further include at least one of nicotine, moisture, or a flavoring material.
  • the aerosol generating material may further include various additives such as cinnamon, capsaicin, or the like.
  • the aerosol generating material may contain, not only a liquid material having a high fluidity, but a material in the form of gel or solid.
  • composition components of the aerosol generating material may be variously selected according to the embodiments and a composition ratio thereof may also vary according to the embodiments.
  • the liquid may refer to a liquid aerosol generating material.
  • the smoking material portion may include the solid aerosol generating material or may include both the solid aerosol generating material and the liquid aerosol generating material.
  • a length of the smoking material portion may be approximately 15 mm to 75 mm.
  • the smoking material portion may have a structure wrapped by a thermally conductive wrapper.
  • the thermally conductive wrapper transfers heat generated from a combustible heat source to the tobacco material.
  • the wrapper may be a metal foil wrapper such as an aluminum foil wrapper, a steel wrapper, an iron foil wrapper, and a copper foil wrapper; and a metal alloy foil wrapper, and the material thereof is not limited to the above materials, as long as it is a material capable of efficiently transferring heat.
  • the smoking material portion and the cooling portion may be wrapped by external cigarette paper.
  • it may be formed of paper or cellulose wrapping paper.
  • the present disclosure is not limited thereto.
  • the smoking article includes a mouthpiece portion.
  • the mouthpiece portion may be a mono filter, double filter, or triple filter.
  • the mouthpiece portion may include at least one of filters having a porous matrix structure, tube structure, and paper tube structure.
  • the filter may include a fibrous or filamentous filter tow containing at least one of a polymer, paper, cellulose acetate, activated carbon, and carbon, or a filter tow containing both.
  • the embodiment is not limited thereto.
  • the material of the filter may further include at least one filter material widely known in the technical field, such as a carbon-containing adsorbent or activated carbon.
  • the mouthpiece portion may further include tip paper and/or filter wrapping paper for wrapping the filter and the tip paper and the filter wrapping paper may be, for example, a paper material, but are not limited thereto.
  • a transfer jet nozzle system (TINS) filter flavored with approximately 6 mg of menthol was used.
  • a heating type cigarette which is the same as that of Example 1 was prepared, except that a paper tube filter having an inner portion coated with 1% of carboxymethyl cellulose was used as the hollow filter.
  • a heating type cigarette which is the same as that of Example 1 was prepared, except that a paper tube filter having an inner portion coated with 9% of sodium chloride was used as the hollow filter.
  • a heating type cigarette which is the same as that of Example 1 was prepared, except that a paper tube filter having an inner portion coated with 1% of sodium chloride was used as the hollow filter.
  • a heating type cigarette which is the same as that of Example 1 was prepared, except that a paper tube filter having an inner portion coated with 6% of sodium chloride was used as the hollow filter.
  • a heating type cigarette which is the same as that of Example 1 was prepared, except that a paper tube filter having an inner portion coated with 15% of sodium chloride was used as the hollow filter.
  • a heating type cigarette which is the same as that of Example 1 was prepared, except that a paper tube filter having an uncoated inner portion was used as the hollow filter.
  • Comparative Example 1 In order to confirm Comparative Example 1 and the sensory characteristics according to a concentration of sodium chloride that is perceived to have an excellent cooling effect, the sensory evaluation was performed regarding thermal sensation during initial puffs, amount of aerosol, amount of atomization, and sucking property according to Comparative Example 1 and Examples 3 to 6 and results thereof were shown in Table 2. The sensory evaluation was performed on an evaluation panel of 25 members using respective cigarettes of Examples 2 weeks after manufacture, based on a total score of 5 points.

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  • Chemical & Material Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Materials Engineering (AREA)
  • Inorganic Chemistry (AREA)
  • Cigarettes, Filters, And Manufacturing Of Filters (AREA)
EP22879582.9A 2021-12-31 2022-12-09 Filtre de refroidissement et article à fumer le comprenant Pending EP4226780A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
KR1020210193585A KR20230104394A (ko) 2021-12-31 2021-12-31 냉각용 필터 및 이를 포함하는 흡연 물품
PCT/KR2022/019987 WO2023128383A1 (fr) 2021-12-31 2022-12-09 Filtre de refroidissement et article à fumer le comprenant

Publications (1)

Publication Number Publication Date
EP4226780A1 true EP4226780A1 (fr) 2023-08-16

Family

ID=86386841

Family Applications (1)

Application Number Title Priority Date Filing Date
EP22879582.9A Pending EP4226780A1 (fr) 2021-12-31 2022-12-09 Filtre de refroidissement et article à fumer le comprenant

Country Status (5)

Country Link
EP (1) EP4226780A1 (fr)
JP (1) JP2024507309A (fr)
KR (1) KR20230104394A (fr)
CN (1) CN116744808A (fr)
WO (1) WO2023128383A1 (fr)

Family Cites Families (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102017120202B4 (de) * 2017-09-01 2022-08-11 Deutsche Benkert Gmbh & Co. Kg Rauchartikel und Verfahren zum Kühlen eines erwärmten partikelbeladenen Gases
CN108143004B (zh) * 2017-12-22 2021-09-14 安徽中烟工业有限责任公司 一种加热不燃烧卷烟烟气降温材料及其应用
CN108523216B (zh) * 2018-04-19 2020-08-25 云南巴菰生物科技有限公司 一种用于降低烟气温度低吸阻聚乳酸丝束滤棒的制备方法
JP6966652B2 (ja) * 2018-08-16 2021-11-17 ユンナン シークェア サイエンス アンド テクノロジー カンパニー リミティドYunnan Xike Science & Technology Co., Ltd. 一体成形加熱式非燃焼発煙製品およびその製造方法
CN109288123B (zh) * 2018-08-24 2021-08-20 湖南中烟工业有限责任公司 一种降温嘴棒及卷烟
KR102583905B1 (ko) 2020-02-17 2023-09-27 주식회사 케이티앤지 냉각구조체 및 이를 포함하는 흡연물품

Also Published As

Publication number Publication date
WO2023128383A1 (fr) 2023-07-06
KR20230104394A (ko) 2023-07-10
JP2024507309A (ja) 2024-02-19
CN116744808A (zh) 2023-09-12

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