EP1688052A1 - Rauchartikel mit Belüftungsrohr - Google Patents

Rauchartikel mit Belüftungsrohr Download PDF

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Publication number
EP1688052A1
EP1688052A1 EP05250558A EP05250558A EP1688052A1 EP 1688052 A1 EP1688052 A1 EP 1688052A1 EP 05250558 A EP05250558 A EP 05250558A EP 05250558 A EP05250558 A EP 05250558A EP 1688052 A1 EP1688052 A1 EP 1688052A1
Authority
EP
European Patent Office
Prior art keywords
tube
rod
smoking article
air permeable
ventilation
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.)
Withdrawn
Application number
EP05250558A
Other languages
English (en)
French (fr)
Inventor
Patrick Mauroux
Frederic Antoun
Cedric Meyer
Charles Kuersteiner
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.)
Philip Morris Products SA
Original Assignee
Philip Morris Products SA
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 Philip Morris Products SA filed Critical Philip Morris Products SA
Priority to EP05250558A priority Critical patent/EP1688052A1/de
Publication of EP1688052A1 publication Critical patent/EP1688052A1/de
Withdrawn legal-status Critical Current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
    • A24D1/00—Cigars; Cigarettes
    • A24D1/02—Cigars; Cigarettes with special covers
    • A24D1/027—Cigars; Cigarettes with special covers with ventilating means, e.g. perforations
    • A—HUMAN NECESSITIES
    • A24—TOBACCO; CIGARS; CIGARETTES; SIMULATED SMOKING DEVICES; SMOKERS' REQUISITES
    • A24D—CIGARS; CIGARETTES; TOBACCO SMOKE FILTERS; MOUTHPIECES FOR CIGARS OR CIGARETTES; MANUFACTURE OF TOBACCO SMOKE FILTERS OR MOUTHPIECES
    • A24D3/00—Tobacco smoke filters, e.g. filter-tips, filtering inserts; Filters specially adapted for simulated smoking devices; Mouthpieces for cigars or cigarettes
    • A24D3/04—Tobacco smoke filters characterised by their shape or structure
    • A24D3/043—Tobacco smoke filters characterised by their shape or structure with ventilation means, e.g. air dilution

Definitions

  • the present invention relates to a ventilation tube for a smoking article. It is useful in smoking articles in which the rod of smoking material is of smaller diameter than the ventilation tube.
  • the invention also provides a smoking article comprising such a ventilation tube.
  • Smoking articles such as cigarettes, comprise a charge of smokable material, for example shredded tobacco, surrounded by a paper wrapper to form a rod of smokable material, such as the tobacco rod of a conventional cigarette.
  • Filter cigarettes typically comprise a filter element attached to one end of the tobacco rod by means of a wrapping or tipping material.
  • the filter element is composed of filter material wrapped by a wrapper known as a plug wrap.
  • ventilation is effected through a ventilation zone, for example by holes in the filter surface, the tipping material and the plug wrap. Ventilation of cigarettes may be employed to reduce the delivery of certain combustion products, such as total particulate matter (TPM) and carbon monoxide.
  • TPM total particulate matter
  • a smoking article comprising a rod of smokable material and a ventilation tube circumscribing an end region of the rod, which rod extends from a first, rod, end of the tube. At least part of the outer surface of the tube is air impermeable, at least part of the inner surface of the tube is air permeable, and a first one of the two annular end surfaces of the tube is air permeable. The said first annular end surface of the tube extends radially outward around the rod and is in fluid communication with the air permeable part of the inner surface of the tube.
  • the tube comprises a wall defining a passage.
  • the rod of smokable material and the ventilation tube each are of uniform circular cross-section, the outer diameter of the tube being greater than the outer diameter of the rod.
  • the entire outer surface of the tube is air impermeable.
  • the rod (including the wrapper) has a diameter between about 4mm, preferably about 4.5mm, and about 7.5mm.
  • the ventilation tube has an outer diameter between about 5mm, preferably 6mm, and about 8.5mm.
  • the rod of smokable material is a tobacco rod wrapped with cigarette paper.
  • the rod of smoking material is disposed in a substantially coaxial recess in the first end of the tube.
  • the ventilation tube contains filter material.
  • the rod of smokable extends through the whole length of the ventilation tube and comprises a wrapper having an air permeable region at least partly in register with the air permeable part of the inner surface of the tube. In other preferred embodiments, the rod extends only partially through the length of the tube.
  • a particularly preferred smoking article of the present invention is a cigarette comprising a tobacco rod and a ventilation tube comprising a filter element.
  • the ventilation tube forms the mouth end of the smoking article of the invention and ambient air flows from the first annular end surface which is in fluid communication with the air permeable part of the inner surface of the ventilation tube to ventilate the smoking article.
  • the smoking article of the present invention allows a smoker to achieve a very good grip on cigarettes with a small diameter, such as slim and ultraslim cigarettes.
  • a smoking article according to the invention the smoker puts his lips around the ventilation tube drawing mainstream smoke diluted with air.
  • a ventilation tube for a smoking article at least part of the outer surface of the tube being air impermeable, at least a part of the inner surface of the tube being air permeable and a first one of the two annular end surfaces of the tube being air permeable, the said air permeable part of the inner surface of the tube being in fluid communication with the first annular end surface.
  • the second annular end surface may be air permeable or air impermeable.
  • a preferred ventilation tube according to the invention is a hollow, elongate, substantially cylindrical body comprising a tube wall and a central passage.
  • the tube and the passage are preferably designed to retain a specific rod of smokable material by a friction fit.
  • the section of the tube which received the end of the rod may be of smaller diameter than the rest of the tube; in such embodiments only part of the outer tube surface is air impermeable.
  • the entire outer surface of the tube is air impermeable.
  • the tube wall, the inner surface and the outer surface all are substantially cylindrical.
  • the inner surface of the tube may be air permeable throughout its length.
  • part of the inner surface of the tube may be air impermeable.
  • the inner surface of a tube wall of an inherently air permeable material may be rendered air impermeable by the inclusion in the central passage of an air impermeable annulus or tube; in this case, the part of the inner surface which will overlie the rod of smokable material preferably remains air permeable.
  • the tube length is between about 12mm and about 45mm; for preferred embodiments the tube length is between about 20mm and about 40 mm.
  • the difference between the outer diameter of the tube and the diameter of the tobacco rod is at least about 2.5mm, so that the wall of the tube is at least about 1.25mm thick.
  • the ventilation tube has an outside diameter between about 5mm, preferably about 6mm, and about 8.5mm.
  • the wall of the ventilation tube may be made of an inherently air impermeable material, for example a nonporous and air impermeable thermoplastic material, or of an inherently air permeable material.
  • the wall material is selected such as to be approved for use in food by an appropriate regulatory authority.
  • the first end of the tube is provided with at least two, preferably from 12 to 40, channels extending from the air permeable annular end surface of the tube through the wall and opening into the central passage of the tube, providing the air permeable part of the inner surface.
  • the channels have a diameter of from about 0.1mm to about 0.35mm.
  • the wall of the ventilation tube is air permeable and inherently porous; for example, it may be of a porous thermoplastic material.
  • the tube wall may be composed of or formed from sintered metal, steel mesh, ceramic materials, heat treated cellulose acetate, non-woven materials, or fibrous materials, for example bicomponent, continuous or stable fibre media made by an extrusion or pultrusion process.
  • a preferred material to form the inherently porous tube wall is a thermoplastic material, more preferably a sinterable thermoplastic material.
  • a preferred thermoplastic material to make the tube wall is a polyolefin, including, but not limited to, ethylene vinyl acetate (EVA); ethylene methyl acrylate (EMA), polyethylenes, polypropylenes, ethylene-propylene rubbers, ethylene-propylenediene rubbers, polystyrene, and mixtures and derivatives thereof.
  • EVA ethylene vinyl acetate
  • EMA ethylene methyl acrylate
  • polyethylenes polypropylenes
  • ethylene-propylene rubbers ethylene-propylenediene rubbers
  • polystyrene polystyrene
  • a particularly preferred polyolefin is a polyethylene.
  • suitable polyethylenes include low density polyethylene (LDPE), linear low density polyethylene (LLDPE), high density polyethylene (HDPE), ultra-high molecular weight polyethylene (UHMWPE),
  • Porous thermoplastic materials suitable for use in forming a ventilation tube of the present invention are known in the art and readily commercially available. If desired, the porous thermoplastic materials may further comprise additives such as lubricants, fillers or colorants.
  • the tube is moulded from a sintered porous thermoplastic material in one continuous and contiguous piece.
  • the average pore size (diameter) of the porous material used to make the tube is at least about 10 ⁇ m, preferably in the range of about 50 ⁇ m to about 300 ⁇ m.
  • the average pore volume or average void volume, that is the average ratio of the air volume of the porous material to the total volume of the said material is between about 40% and about 60%.
  • the outer surface of the ventilation tube is substantially air impermeable.
  • the outer surface has to be rendered air impermeable using suitable means and materials.
  • air impermeability of the outer surface is achieved by attaching an air impermeable tipping material, such as a commercially available air impermeable tipping material or rigid softboard, to the outer tube wall such that it entirely covers the outer surface of the tube and renders this surface air impermeable.
  • the air impermeable tipping paper must have a porosity of equal to or less than 5cm 3 /min.cm 2 as measured in accordance with ISO method 2965.
  • the air impermeable tipping material is attached to the outer tube wall using a suitable adhesive such as glue.
  • Preferred smoking articles according to the present invention comprise a ventilation tube designated herein as being preferred.
  • the central passage through the ventilation tube incorporates a filter element which may have one or more filter segments.
  • the filter element may comprise cellulose acetate, paper or any other filter material suitable for use in smoking articles; it may comprise charcoal or other absorbents, and it may contain flavourants or other smoke modifiers, such as smoke constituent reducing agents.
  • the filter element may abut the tobacco rod or may be directly attached to the tobacco rod in an end-to-end relationship, advantageously by means of plug wrap.
  • a filter of a smoking article according to the present invention may be a plug-space-plug filter, in which case one or both plugs may comprise charcoal and/or one or more other smoke modifiers.
  • the region of the inner surface of the tube which overlies the space in a plug-space-plug filter may be air permeable, the space thereby providing an air/mainstream smoke mixing chamber.
  • the filter element stops short of one end of the ventilation tube with an air permeable annular end surface to provide a cavity for the reception of the rod of smokable material.
  • FIG 1 shows a first embodiment of a ventilation tube 10.
  • the cylindrical tube 10 has a circle as its directrix and is 32mm in length.
  • the tube wall 12 is inherently air permeable and encloses the central passage 14.
  • the central passage 14 may be partially filled with filter material, and can receive an end of a rod of tobacco or other smoking material.
  • the outer surface 16 of the tube wall 12 is inherently air permeable.
  • the outer surface of the tube 10 is rendered air impermeable by a commercially available, air impermeable tipping paper 18.
  • the first 20 and second 22 annular end surfaces of the tube 10 are air permeable.
  • the air permeable end surfaces 20,22 are in fluid communication through the tube wall 12 with the air permeable inner surface 24 of the tube 10 and thus provide potential annular ventilation surfaces for the smoking article.
  • a tobacco rod is inserted at either end of the ventilation tube 10.
  • the air permeable wall 12 of the tube 10 is made from an inherently porous high density polyethylene (HDPE), coarse type, obtainable from Porex, Porous Product Group, Germany.
  • the HDPE has an average void volume of 55%, an average pore size of 130 ⁇ m and a density of 0.46g/cm3.
  • the tube 30 has two axially aligned portions, a first, air permeable, section 32 and a second, air impermeable section 34.
  • the air permeable section 32 of the tube 30 has an air permeable wall 12a around the central passage 14a.
  • the air impermeable section 34 of the tube 30 is longer than the air permeable section 32; preferably, the air permeable section is at least 12mm long.
  • the air impermeable section 34 has an air impermeable wall 36 around the central passage 14b which forms, with the central passage 14a of the air permeable section 32, the central passage 14 of the tube 30.
  • the two sections 32,34 are held together in axial alignment by air impermeable tipping paper 18 which renders the entire outer surface of the tube 30 air impermeable. It will be readily appreciated that since the outer surface of the air impermeable section 34 is inherently air impermeable, the tipping paper 18 need not extend all the way to the free end of the air impermeable section 34; however, it may do so if a uniform appearance to the tube 30 is desired.
  • the free annular end surface 20a of the air permeable section 32 of the tube 30 provides a ventilation surface.
  • the other annular end surface 38 of the tube 30 is air impermeable and therefore does not provide a ventilation surface.
  • the ventilation surface 20a is in fluid communication through the wall 12a of the air permeable tube section 32 with the air permeable inner surface 24a of the tube 30.
  • a ventilation tube 40 shown in Figure 3
  • the entire wall 42 of the tube 40 is of an inherently air impermeable material.
  • the air impermeable tipping paper 18 (as shown in Figures 1 and 2) is missing.
  • the ventilation surface 20c is provided with several ventilation channels 44 opening from the air permeable annular end surface of the tube 40, extending through the wall 42 of the tube 40 and opening into the central passage 14 to render part of the inner surface 24c of the tube 40 air permeable.
  • the channels 44 through the tube 40 open in the radially outer portion of the tube end surface 20c.
  • a tobacco rod 52 (having a circle as its directrix) is inserted into the central passage 14 of the ventilation tube 10,30 so that the ventilation surface 20,20a, is disposed around the rod 52.
  • the rod 52 may extend only a short distance into the passage 14 from the end of the tube having the ventilation surface, as shown in Figures 4 and 5.
  • the rod 52 may extend right through the passage 14.
  • the rod 52 consists of a column of shredded tobacco having a cut width of at least 0.3mm and wrapped in a cigarette paper 54.
  • the increase in the diameter of the mouth end region of a cigarette or other smoking article provided with a ventilation tube according to the invention makes the ventilation tubes of the invention particularly suitable for use with tobacco rods of smaller than standard diameter; the ventilation tube may be of standard cigarette diameter which some smokers may find easier to grip comfortably than a very slim cigarette.
  • a cigarette 50 comprises a rod 52 including a wrapper of cigarette paper 54 attached in axial alignment to a ventilated tube 10 of the type described with reference to Figure 1.
  • the tube 10 has an external diameter of 7.9mm and an internal diameter 5.4mm and is 32mm in length.
  • a second, mouth end, filter segment 58 is also disposed in the central passage 14 toward the mouth end thereof, adjacent the first segment 56.
  • the second filter segment 58 does not protrude from the mouth end of the tube 10.
  • the tobacco rod 52 is a friction fit in the passage 14. Retention of the rod 52 may be ensured by additional means, such as a fine line of adhesive parallel to the central passage.
  • the entire inner surface 24 of the tube 10 is air permeable.
  • ventilating air is drawn through the ventilation surface 20, through the wall 12 of the ventilation tube 10 and through the air permeable inner surface 24 of the tube and into the filter element consisting of segments 56,58 where it mixes with mainstream smoke from the burning tobacco rod 52.
  • the air/smoke mixture passes to the smoker's mouth through the filter elements 56,58 and the tube wall 12.
  • the distance by which the first, rod end, filter element 56 stops short of the rod end of the passage is greater than that required for reception of the tobacco rod 52. In that case, the space in the central passage 14 not occupied by the rod 52 provides an air/smoke mixing chamber.
  • the cigarette 60 shown in Figure 5 comprises a tobacco rod 52 and a ventilation tube 30 like the one described with reference to Figure 2. It further differs from the embodiment of Figure 4 in that there is no filter material in the tube 30.
  • the tobacco rod 52 is inserted into the open end of the passage 14a (as shown in Figure 2) through the air permeable section 32 of the tube 30 at the furthest end of that section 32; the tobacco rod 52 must not extend into the passage 14b defining the air impermeable section 34 of the tube 30.
  • the tobacco rod 52 of this embodiment has a high resistance to draw (RTD), preferably at least 100mm water gauge, more preferably at least 200mm water gauge, to give a satisfactory smoking experience despite the absence of filter material from the ventilation tube 30.
  • RTD resistance to draw
  • a cigarette 70 comprises a tobacco rod 52 extending wholly through a ventilation tube 10 like that described with reference to Figure 1.
  • the tobacco rod 52 is flush with the mouth end of the ventilation tube 10 and extends through the central passage 14 and out of the other end of the ventilation tube 10, that is, the end at which the ventilation surface 20 is located.
  • the inner surface 24 of the tube 10 is air permeable over its entire length.
  • the cigarette paper wrapper 56 of the tobacco rod 52 of this embodiment is a high porosity cigarette paper, having a porosity of at least about 86cm 3 /min.cm 2 , to facilitate air passage through the air permeable inner surface 24 of the tube 10 into the tobacco rod 52.
  • Ventilation air passes through the ventilation surface 20, through the tube wall 12, the air permeable inner surface 24 of the tube 10 and the high porosity cigarette paper 56 into the tobacco rod 42 where it mixes with smoke.
  • the ventilation tube 82 is shorter than those of the embodiments of Figures 4, 5 and 6; it is 15mm long.
  • the tube 82 has an air permeable wall.
  • the tube 82 extends a short distance only beyond the tobacco rod 52, which is as already described.
  • a composite filter 84 At the mouth side of the tube 82 is a composite filter 84, consisting of three axially aligned filter segments 84a,84b,84c wrapped together by a plug wrap 86.
  • the composite filter 84 is attached to the tube 82 by air impermeable tipping paper 18 which also serves to render air impermeable the outer surface of the tube 82.
  • the ventilation tube 82 has a rod end receiving portion 82' of smaller outer diameter than the rest of the ventilation tube 82.
  • the thickness of the wall 12 of the smaller outer diameter portion 82' of the tube 82 is 0.5mm while the wall thickness of the larger outer diameter portion of the tube 82 is 1.5mm.
  • the ventilation surface is provided by the air permeable annular end wall regions 20' and 20" of the ventilation tube 82 and by the outer cylindrical surface 88 of the smaller diameter portion 82' of the ventilation tube 82, which is not overwrapped by the tipping paper 18.
  • the entire inner cylindrical surface of the ventilation tube 82 is air permeable.
  • the portion of the central passage 14 through the ventilation tube 82 which is not filled by the tobacco rod 52 provides an air/mainstream smoke mixing chamber.
  • the ventilation tube does not burn or smoulder.
  • they may be made self extinguishing, for example by the provision of an annular non-combustible band of 3mm to 5 mm in width located at a suitable distance from the ventilation tube.
  • a mark may be provided on the wrapper at a suitable distance form the tube to indicate to the smoker that the smoking article should be extinguished.
  • a ventilation surface at a position on the smoking article remote from the smoker's mouth and fingers, and aligned substantially perpendicular to the principal axis of the smoking article significantly reduces or eliminates the risk that the ventilation surface will be partly or wholly blocked by the smoker's mouth or fingers, thus ensuring that the intended level of ventilation is provided so that the smoking characteristics, including delivery, are those intended; there is less variation in the smoking characteristics of similar smoking articles according to the invention and of similar conventional smoking articles.

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  • Cigarettes, Filters, And Manufacturing Of Filters (AREA)
EP05250558A 2005-02-02 2005-02-02 Rauchartikel mit Belüftungsrohr Withdrawn EP1688052A1 (de)

Priority Applications (1)

Application Number Priority Date Filing Date Title
EP05250558A EP1688052A1 (de) 2005-02-02 2005-02-02 Rauchartikel mit Belüftungsrohr

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
EP05250558A EP1688052A1 (de) 2005-02-02 2005-02-02 Rauchartikel mit Belüftungsrohr

Publications (1)

Publication Number Publication Date
EP1688052A1 true EP1688052A1 (de) 2006-08-09

Family

ID=34940423

Family Applications (1)

Application Number Title Priority Date Filing Date
EP05250558A Withdrawn EP1688052A1 (de) 2005-02-02 2005-02-02 Rauchartikel mit Belüftungsrohr

Country Status (1)

Country Link
EP (1) EP1688052A1 (de)

Cited By (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2008038145A3 (en) * 2006-09-25 2008-06-26 Souza Cruz Sa Smoking article and manufacturing method for a smoking article
WO2010010391A1 (en) 2008-07-23 2010-01-28 British American Tobacco (Investments) Limited Ventilating sheath for smoking article
US8807143B2 (en) 2008-12-01 2014-08-19 British American Tobacco (Investments) Limited Smoking article filter
RU2588694C2 (ru) * 2008-11-10 2016-07-10 Бритиш Америкэн Тобэкко (Джемани) Гмбх Мультифильтр для курительного изделия
US9936730B2 (en) 2012-12-07 2018-04-10 Philip Morris Products S.A. Method and apparatus for manufacturing smoking article components having a removable wrap
WO2021123844A3 (en) * 2019-12-20 2021-11-04 Nicoventures Trading Limited An article for use in a non-combustible aerosol provision system
US11918035B2 (en) 2010-06-10 2024-03-05 Filtrona Filter Products Development Co. Pte. Ltd. Tobacco smoke filter

Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4498487A (en) * 1981-02-14 1985-02-12 Fabriques De Tabac Reunies, S.A. Rod-like smoking article with secondary air channels and apparatus for producing such an article
US4608999A (en) * 1980-12-01 1986-09-02 Brown & Williamson Tobacco Corporation Cigarette filter
US4649941A (en) * 1985-12-16 1987-03-17 R. J. Reynolds Tobacco Company Adjustable air dilution cigarette exhibiting controlled pressure drop
US4693265A (en) * 1986-05-19 1987-09-15 R. J. Reynolds Tobacco Company Cigarette filter having low visible staining
EP0790007A1 (de) * 1996-01-29 1997-08-20 R.J. Reynolds Tobacco Company Zigarette mit niedrigem Kohlendioxid-Gehalt
JP2004248570A (ja) * 2003-02-19 2004-09-09 Japan Tobacco Inc 通気型フィルタシガレット及びその製造システム

Patent Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4608999A (en) * 1980-12-01 1986-09-02 Brown & Williamson Tobacco Corporation Cigarette filter
US4498487A (en) * 1981-02-14 1985-02-12 Fabriques De Tabac Reunies, S.A. Rod-like smoking article with secondary air channels and apparatus for producing such an article
US4649941A (en) * 1985-12-16 1987-03-17 R. J. Reynolds Tobacco Company Adjustable air dilution cigarette exhibiting controlled pressure drop
US4693265A (en) * 1986-05-19 1987-09-15 R. J. Reynolds Tobacco Company Cigarette filter having low visible staining
EP0790007A1 (de) * 1996-01-29 1997-08-20 R.J. Reynolds Tobacco Company Zigarette mit niedrigem Kohlendioxid-Gehalt
JP2004248570A (ja) * 2003-02-19 2004-09-09 Japan Tobacco Inc 通気型フィルタシガレット及びその製造システム

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
PATENT ABSTRACTS OF JAPAN vol. 2003, no. 12 5 December 2003 (2003-12-05) *

Cited By (13)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2008038145A3 (en) * 2006-09-25 2008-06-26 Souza Cruz Sa Smoking article and manufacturing method for a smoking article
WO2010010391A1 (en) 2008-07-23 2010-01-28 British American Tobacco (Investments) Limited Ventilating sheath for smoking article
EP2425726A1 (de) 2008-07-23 2012-03-07 British American Tobacco (Investments) Limited Belüftende Hülse für einen Raucherartikel
US8640713B2 (en) 2008-07-23 2014-02-04 British American Tobacco (Investments) Limited Ventilating sheath for smoking article
US9986758B2 (en) 2008-07-23 2018-06-05 British American Tobacco (Investments) Limited Ventilating sheath for smoking article
RU2588694C9 (ru) * 2008-11-10 2016-10-10 Бритиш Америкэн Тобэкко (Джемани) Гмбх Мультифильтр для курительного изделия
RU2588694C2 (ru) * 2008-11-10 2016-07-10 Бритиш Америкэн Тобэкко (Джемани) Гмбх Мультифильтр для курительного изделия
US9961936B2 (en) 2008-11-10 2018-05-08 British American Tobacco (Germany) Gmbh Multi-filter for a smoking product
US8807143B2 (en) 2008-12-01 2014-08-19 British American Tobacco (Investments) Limited Smoking article filter
US11918035B2 (en) 2010-06-10 2024-03-05 Filtrona Filter Products Development Co. Pte. Ltd. Tobacco smoke filter
US9936730B2 (en) 2012-12-07 2018-04-10 Philip Morris Products S.A. Method and apparatus for manufacturing smoking article components having a removable wrap
RU2652478C2 (ru) * 2012-12-07 2018-04-26 Филип Моррис Продактс С.А. Способ и устройство для изготовления компонентов курительного изделия с удаляемым элементом обертки
WO2021123844A3 (en) * 2019-12-20 2021-11-04 Nicoventures Trading Limited An article for use in a non-combustible aerosol provision system

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