EP0408354A2 - Cigarettes - Google Patents

Cigarettes Download PDF

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Publication number
EP0408354A2
EP0408354A2 EP90307613A EP90307613A EP0408354A2 EP 0408354 A2 EP0408354 A2 EP 0408354A2 EP 90307613 A EP90307613 A EP 90307613A EP 90307613 A EP90307613 A EP 90307613A EP 0408354 A2 EP0408354 A2 EP 0408354A2
Authority
EP
European Patent Office
Prior art keywords
cigarette
tobacco
filter
tube
tobaccos
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Withdrawn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
EP90307613A
Other languages
German (de)
English (en)
Other versions
EP0408354A3 (fr
Inventor
Warren Arthur Brackmann
Tow Pin Liew
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.)
Rothmans International Services Ltd
Original Assignee
Rothmans International Services Ltd
Rothmans International Tobacco UK Ltd
Rothmans International Tobacco Ltd
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 Rothmans International Services Ltd, Rothmans International Tobacco UK Ltd, Rothmans International Tobacco Ltd filed Critical Rothmans International Services Ltd
Publication of EP0408354A2 publication Critical patent/EP0408354A2/fr
Publication of EP0408354A3 publication Critical patent/EP0408354A3/xx
Withdrawn legal-status Critical Current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
    • 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

Definitions

  • This invention relates to cigarettes which are of improved uniformity as to the strength of the smoke, flavour and aroma throughout the smoking.
  • N.M. Hopkins (G.B. 250,063) disclosed the use of a blend of strong tobacco which occupies a space of gradually decreasing cross-section from the kindled end towards the end through which the smoke is drawn with a tobacco of mild composition filling the remainder of the space; for example, the strong tobacco may be in the form of a cone.
  • G.B. 1,340,100 of B.A.T. suggests the use of natural tobacco in a first smoked portion and reconstituted tobacco or tobacco substitute in a second portion, the two portions being in the form of two wedges or, alternatively, the first portion being a core of conical or frusto-conical shape.
  • G.B. 1,343,402 of Olin Corporation makes use of a shredded carbon filled paper incorporated to replace tobacco in increasing amounts towards the butt end of the cigarette to achieve a more uniform yield of smoke as the cigarette is consumed.
  • U.S. 4,759,380 of R.J. Reynolds Tobacco Company described a cigarette in which the tobacco rod is composed of two segments, each containing a different tobacco, with a filter attached to the second segment; the second segment may contain reconstituted tobacco, expanded tobacco, processed tobacco stems or a blend thereof.
  • This concept of tobacco rods which vary in tobacco composition along the length may be used to achieve a more uniform puff-by-puff delivery of smoke but very often the final one or two puffs are still found to be somewhat stronger than the previous puffs as a result of the repeated previous exposure to smoke of the tobacco being consumed in the final stages.
  • cigarettes with conventional tobacco rods filled with a tobacco of uniform quality have been provided with special filters which increase in filtration efficiency during smoking.
  • G.B. Patent Application No. CA/90/00070 of Rothmans, Benson and Hedges, Inc. and Rothmans International Services Limited makes use of a fabric of microfine fibres to achieve a variable filter efficiency.
  • the fabric which has a high filtration efficiency but a low pressure drop, forms the wrap of a core of low pressure drop, low filtration efficiency tow which is enclosed by an annulus of higher pressure drop, higher filtration efficiency tow.
  • the core is crimp-sealed at the end adjacent to the tobacco so that smoke is able to flow either along the outer annulus or through the cylindrical fabric wrap into the core.
  • the deposition of "tar" on the microfine fibres produces progressive increase in filtration efficiency during smoking.
  • An additional feature of this filter design is that high filtration efficiencies can be achieved, even in the early puffs, at a relatively low filter pressure drop.
  • a cigarette or cigar comprises a rod of tobacco which decreases in strength from the kindled end to the other end and which is provided with a filter, the filtration efficiency of which increases as the cigarette is consumed.
  • the tobacco rod comprises two or more different types or blends of tobacco separated into demarcated zones, the tobacco at the kindled end of the cigarette being higher in strength and/or quality and/or flavour and/or nicotine content than at the other end through which the smoke is drawn.
  • the demarcated zones may be in the form of segments or the zone of stronger tobacco can be wedge shaped, conical or frusto conical.
  • the kindled end may be wholly of stronger tobacco.
  • the material forming the blend of strong tobaccos may include cured and aged flue-cured, Burley, Maryland or Oriental tobaccos, or rare speciality tobaccos such as Latikia or fire-cured tobaccos.
  • the material forming the blend of strong tobaccos may also include expanded tobacco or minor amounts of reconstituted tobacco sheet, processed stems or tobacco substitutes.
  • the milder blend of tobaccos can include flue-cured, Burley, Maryland or Oriental tobaccos or rare speciality tobaccos of the milder varieties and these milder tobaccos may also include expanded tobaccos, reconstituted tobaccos, processed stems or tobacco substitutes.
  • the expanded tobaccos, reconstituted tobaccos, processed stems or tobacco substitute can form of majority part of the milder blend.
  • the filter may be of the kind set forth in European Patent Application 88308323.0 (Publication No. 0 310 257), the disclosure of which is incorporated herein.
  • This filter comprises a filter element of fibrous material, the fibres of which extend longitudinally between a first end which is for attachment to the tobacco rod and a second end, and which surrounds a longitudinally extending tube member, one end of which is closed and is located at the first end of the filter element and the open end of which extends to the second end of the element, the wall of the tube being provided with one or more radially extending apertures adjacent to its closed end to promote radial flow through the fibres of the filter element adjacent the aperture or apertures and being dimensioned so that they remain open to allow flow communication through the wall of the tube throughout the period that the cigarette is smoked.
  • This type of filter is equally effective if assembled to the tobacco rod in the reverse configuration with the open end of the tube in abutment with the tobacco.
  • the interior of the tube may be empty or filled with a column of filter material and in a preferred construction the tube is formed by an impervious film.
  • the filter may be of the kind set forth in European Patent Application No. 89310430.7 (Publication No. 0 364 256) the disclosures of which are incorporated herein and in which the filter comprises a filter element having a flow path therethrough which includes a barrier in the form of a substantially planar disc made from a layer of micro-fine fibres with a diameter of between 0.5 and 10 microns, and provided with one or more flow openings in the range of 0.1 mm to 3.0 mm in diameter with a combined total area of between 0.1 mm2 and 10 mm2.
  • the disc can be located between layers of porous material to form a laminate barrier.
  • the filter may comprise a filter element of the kind set forth in European Patent Application No. 89310421.6 (Publication No. 0 364 253), the disclosure of which is incorporated herein and in which the filter comprises a filter element which includes an axially extending barrier tube of micro-fine fibres with a diameter of between 0.5 and 10 microns and located so that at least part of the gas flow passes through the wall of the barrier.
  • the barrier tube can be provided with one or more flow openings in the range of 0.1 mm to 3.0 mm in diameter with a combined total area of between 0.1 mm2 and 10 mm2.
  • the barrier tube is shaped to provide inner and outer coaxial passages through the filter element, one of which is closed at one end and the other of which is closed at the other end so that the flow path passes through the wall of the barrier tube.
  • the interior of the barrier tube can be empty or it can be filled with a column of filter material.
  • the filter may also be of the kind set forth in PCT Patent Application CA/90/00070, the disclosure of which is again incorporated in the present Application and in which the filter comprises an annulus of conventional filter material surrounding a cylinder of micro-fine fibres, a smoke flow directing element insuring that all the smoke drawn from the cigarette enters the annulus of conventional filter material and a low resistance filtered smoke path is provided at the interior of the cylinder of the micro-fine fibres.
  • a cigarette according to the invention can utilise a tobacco rod of circular or elliptical cross-section wrapped with a suitable cigarette paper and filled with at least two different types of tobaccos or at least two different blends of tobacco separated into demarcation zones within the rod so that the tobacco in the region of the kindled end of the cigarette is higher in strength and/or quality and/or flavour and/or nicotine content than the tobacco in the region through which the smoke is drawn.
  • the filter indicated by reference numeral 3 is of the kind described in European Patent Application 88308323.0 (Publication No. 0 310 257). It will be appreciated that any of the filters described in this Patent Specification can be used because they provide the necessary progressive filtering effect.
  • the filter rod comprises a plug wrap 6, fibrous material 4 and a tube 5 placed longitudinally along the length of the filter. One end of the tube 5 is closed by being crimped as indicated by reference numeral 8 and the other open end of the tube is indicated by reference numeral 9. A pair of opposed apertures 7 are provided in the wall of the tube adjacent the closed end 8. The construction of this type of filter is more clearly shown in Figure 6.
  • the radial component of the flow has therefore greatly increased.
  • the fibres in the flow path of this smoke are therefore transverse to the direction of flow.
  • both the velocity and momentum of the smoke particles are greatly increased as they converge to flow through the narrow apertures.
  • the combined effects of the increased radial component of the flow and the increased particle momentum have consequently greatly increased the filtration efficiency of the fibres in the vicinity of the apertures.
  • the smoke particles will deposit and accumulate partially on the aperture and partially on the fibrous material around the aperture. It has been found that the size of the aperture and its location on the tube wall can be chosen so that the aperture or apertures will not be completely blocked by the accumulated smoke particles.
  • the size of the apertures and their location can be so chosen that the accumulation of the smoke particles on the fibres around the aperture will lead to an increase in the filtration efficiency of these fibres to an extent related to the quantity of smoke which is passed through the aperture.
  • the smoke stream inside the stream is therefore being filtered less efficiently at the initial smoking period, where it is being filtered more and more efficiently due to this gradual increase in the filtration efficiency as the smoke process proceeds.
  • the "tar" concentration of the last few puffs is therefore very much reduced. Consequently a cigarette fitted with this filter has a much more even satisfying "tar" delivery and it is therefore possible to arrange the dimensions of the filter to co-operate with the construction of the two part cigarette rod so that a substantially uniform strength of smoke flavour and aroma are provided.
  • Figure 2 shows a cigarette rod construction in which the zone of stronger tobacco 1 is wedge shaped and in Figure 3 the zone of stronger tobacco is conical.
  • Figure 4 shows a construction in which the zone of stronger tobacco is frusto-conical. In all these constructions the milder tobacco 2 fills the remainder of the space in the rod.
  • These wedges, cones or frusto-cones of stronger tobacco are shown as extending throughout the whole length of the rod but, if desired they may only extend for a portion of the length.
  • the strong tobacco 1 occupies the whole of the tobacco rod cross-section for the first few millimetres of length from the kindled end 10.
  • Such tobacco rods may be produced by the manufacturing process disclosed in European Patent Application No. 0 307 090 of Rothmans, Benson and Hedges Inc. and Rothmans International Services Limited. Other suitable configurations are also disclosed in this European Patent Application.
  • the material forming the blend of strong tobacco may include cured and aged flue-cured, Burley, Maryland or Oriental tobaccos or rare speciality tobaccos such as Latakia or fire-cured tobaccos. If desired, expanded tobacco or minor amounts or reconstituted tobacco sheet, processed stems or tobacco substitutes may be incorporated.
  • the material forming the milder blend of tobaccos may also include flue-cured, Burley, Maryland or Oriental tobaccos or rare speciality tobaccos but, in general, it is advantageous when at least a proportion of these are milder varieties.
  • Other materials used in this milder blend may include expanded tobaccos, reconstituted tobaccos, processed stems or tobacco substitutes and these materials may form a major portion of the blend.
  • the filter which is attached to the end of the tobacco rod containing the higher proportion of milder tobaccos and which has the special property of increasing in filtration efficiency puff-by-puff during the smoking of the cigarette can be as described in European Patent Application 88308323.0 (Publication No. 0 310 257) and the filter shown in Figure 7 is of another type also described in that Patent Application.
  • the tube 5 as shown in Figures 1 to 6 is replaced by an impervious film tube 12.
  • tube 12 contains aperture 7, closed end 14 and open end 15.
  • Aperture 7 is in flow communication between fibrous material 13 and fibrous material 11.
  • the fibrous material 11 is less densely packed than the fibrous material 13.
  • the fibre diameter should be as large as feasible.
  • a commonly available cellulose acetate tow of between 5 to 15 denier per filament (dpf), 10,000 to 50,000 total denier (T.D.) will be suitable.
  • Material 13 should be a filtration material of high filtration efficiency.
  • material 13 will be the commonly used cellulose acetate tow such as the tow of about 1.5 dpf to 5 dpf and preferably 1.5 dpf to 3.5 dpf.
  • the embodiment has an additional advantage to that shown in Figures 1 to 6.
  • the main advantage is that material 11 in the vicinity of aperture 7 provides an additional means for the smoke particle to be captured by the mechanism of impaction as the smoke flows from aperture 7 into material 11.
  • material 11 not only provides a filtration medium inside tube 12, it also provides an impacting surface for the smoke particles in the vicinity of aperture 7.
  • the material 11 is a fibrous material of low packing density, ie of large void volume, and/or fibres of large diameter, the build-up of captured smoke particles will never be sufficient to clog up the flow passage between aperture 7 and open end 15 during the smoking period. The danger of greatly increased flow resistance in such flow passage is therefore avoided.
  • a filter rod is formed from an element which comprises a tube 24, a barrier disc 23 provided with an aperture 22 and made from a layer of micro-fine fibres between 0.5 to 10 microns diameter.
  • the tube 24 may be of any convenient material such as paper or plastics material.
  • the edge of disc 23 is in close contact with the inside wall of the tube 24 so that end-to-end flow path communication through the tube has to pass through disc 23.
  • the aperture 22 can be a single aperture or up to ten apertures, between one and three apertures being preferred. A single aperture may be located conveniently at or around the centre of the disc.
  • the disc may be made of a plurality of layers of fibres, at least one layer being of micro-fine fibres of 0.5 to 10 microns in diameter.
  • the aperture or apertures act as a flow opening and are 0.1 mm to 3.0 mm in diameter with a combined total opening area of 0.1 mm2 to 10 mm2.
  • the layer of micro-fine fibres has a packing density of 0.05 to 0.3 and the thickness of said layer is between 0.5 mm and 4 mm.
  • FIG 11 shows another alternative construction of the kind set forth in European Patent Application No. 89310421.6 (Publication No. 0 364 253).
  • the filter element comprises a barrier tube 31, an outer tube in the form of a plug wrap 33 and the space between the tube 31 and the plug wrap 33 being filled with a porous material 34 such as cellulose acetate tow, or polypropylene tow, polymeric foam materials or any suitable granular materials, apertures can be provided if desired at any convenient location.
  • a porous material 34 such as cellulose acetate tow, or polypropylene tow, polymeric foam materials or any suitable granular materials, apertures can be provided if desired at any convenient location.
  • One end of the tube is blocked for gas flow as indicated by reference numeral 36.
  • the tube 31 is made from a layer of micro-fine fibres between 0.5 to 10 microns in diameter of a plurality of filters of fibres, at least one layer being of micro-fine fibres of 0.5 to 10 microns in diameter.
  • the fibres have a packing density of 0.05 to 0.3 and the thickness of the layers between 0.5 mm and 2 mm.
  • the barrier tube 31 is wrapped around a core 38 made of porous material, preferably with minimum flow resistance to gas flow.
  • a core 38 made of porous material, preferably with minimum flow resistance to gas flow.
  • filter materials such as the cellulose acetate or polypropylene tow may be used.
  • the tow used may consist of a coarse fibre such as 5 denier per filament or larger.
  • the filter material should be packed with a low packing density.
  • apertures similar to aperture 7 in Figures 1 to 8, can be provided as this prevents the micro­fine fibres in the tube becoming clogged, the flow openings allowing what is in effect a controlled leakage.

Landscapes

  • Cigarettes, Filters, And Manufacturing Of Filters (AREA)
EP90307613A 1989-07-14 1990-07-11 Cigarettes Withdrawn EP0408354A2 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
GB898916137A GB8916137D0 (en) 1989-07-14 1989-07-14 Cigarettes
GB8916137 1989-07-14

Publications (2)

Publication Number Publication Date
EP0408354A2 true EP0408354A2 (fr) 1991-01-16
EP0408354A3 EP0408354A3 (fr) 1994-03-30

Family

ID=10660044

Family Applications (1)

Application Number Title Priority Date Filing Date
EP90307613A Withdrawn EP0408354A2 (fr) 1989-07-14 1990-07-11 Cigarettes

Country Status (7)

Country Link
EP (1) EP0408354A2 (fr)
JP (1) JPH03206876A (fr)
AU (1) AU637382B2 (fr)
CA (1) CA2021199A1 (fr)
GB (1) GB8916137D0 (fr)
IE (1) IE902555A1 (fr)
ZA (1) ZA905255B (fr)

Cited By (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO1993002575A1 (fr) * 1991-08-08 1993-02-18 Rothmans, Benson & Hedges Inc. Regulation de la chimie de la fumee des cigarettes
EP0540361A1 (fr) * 1991-10-30 1993-05-05 Rothmans, Benson & Hedges Inc. Nouveau système de cigarette pour fumer en plusieurs fois
WO1994014345A1 (fr) * 1992-12-24 1994-07-07 Rothmans International Services Limited Filtre de cigarette en forme de tige et cigarettes comprenant un tel filtre
TR26626A (tr) * 1992-12-18 1995-03-15 Rothmans Benson And Hedges Inc Yeni cok icimli sigara sistemi.
US5524647A (en) * 1991-08-08 1996-06-11 Rothmans, Benson & Hedges, Inc. Control of cigarette smoke chemistry
TR28750A (tr) * 1992-12-18 1997-02-28 Rothmans Benson & Hedges Münferit sigaralarin, kismen icilmesi, söndürülmesi ve ondan sonra tekrar icilmesine, müsaade eden yeni bir sigara strüktürü.
AU699329B2 (en) * 1991-08-08 1998-12-03 Rothmans International Services Limited Control of cigarette smoke chemistry
AU705939B2 (en) * 1991-08-08 1999-06-03 Rothmans International Services Limited Control of cigarette smoke chemistry
EP2773230B1 (fr) 2011-11-03 2020-07-22 Acetate International LLC Produits de rubans de câble à denier élevé par filament et à fin denier total

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
UA111625C2 (uk) * 2011-10-07 2016-05-25 Філіп Морріс Продактс С.А. Багатосекційний курильний виріб
JP7261177B2 (ja) * 2017-06-09 2023-04-19 フィリップ・モーリス・プロダクツ・ソシエテ・アノニム 繊維質フィルターセグメントを有するエアロゾル発生物品

Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB250063A (en) * 1925-06-19 1926-04-08 Nevil Monroe Hopkins Improvements in tobacco articles such as cigars, cigarettes and pipe cartridges
GB1340100A (en) * 1971-05-18 1973-12-05 British American Tobacco Co Smoking articles
US4759380A (en) * 1986-11-03 1988-07-26 R. J. Reynolds Tobacco Company Filter cigarette having segmented sections
EP0310257A1 (fr) * 1987-09-17 1989-04-05 Rothmans International Tobacco Limited Tiges de filtre à cigarette et cigarette avec une telle tige de filtre
EP0364256A1 (fr) * 1988-10-12 1990-04-18 Rothmans International Tobacco (Uk) Limited Eléments de tiges de filtre à cigarette et cigarettes avec de tels éléments de tiges de filtre
EP0364253A1 (fr) * 1988-10-12 1990-04-18 Rothmans International Services Limited Elément de tiges de filtre à cigarette et cigarettes avec de tels éléments de tiges de filtre

Family Cites Families (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB8529852D0 (en) * 1985-12-04 1986-01-15 Rothmans Of Pall Mall Sculptured cigarette
CA1246415A (fr) * 1985-05-15 1988-12-13 Warren A. Brackmann Cigarettes composites
GB8529851D0 (en) * 1985-12-04 1986-01-15 Rothmans Of Pall Mall Linear layered cigarette

Patent Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB250063A (en) * 1925-06-19 1926-04-08 Nevil Monroe Hopkins Improvements in tobacco articles such as cigars, cigarettes and pipe cartridges
GB1340100A (en) * 1971-05-18 1973-12-05 British American Tobacco Co Smoking articles
US4759380A (en) * 1986-11-03 1988-07-26 R. J. Reynolds Tobacco Company Filter cigarette having segmented sections
EP0310257A1 (fr) * 1987-09-17 1989-04-05 Rothmans International Tobacco Limited Tiges de filtre à cigarette et cigarette avec une telle tige de filtre
EP0364256A1 (fr) * 1988-10-12 1990-04-18 Rothmans International Tobacco (Uk) Limited Eléments de tiges de filtre à cigarette et cigarettes avec de tels éléments de tiges de filtre
EP0364253A1 (fr) * 1988-10-12 1990-04-18 Rothmans International Services Limited Elément de tiges de filtre à cigarette et cigarettes avec de tels éléments de tiges de filtre

Cited By (13)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5524647A (en) * 1991-08-08 1996-06-11 Rothmans, Benson & Hedges, Inc. Control of cigarette smoke chemistry
AU705939B2 (en) * 1991-08-08 1999-06-03 Rothmans International Services Limited Control of cigarette smoke chemistry
AU699329B2 (en) * 1991-08-08 1998-12-03 Rothmans International Services Limited Control of cigarette smoke chemistry
WO1993002575A1 (fr) * 1991-08-08 1993-02-18 Rothmans, Benson & Hedges Inc. Regulation de la chimie de la fumee des cigarettes
US5826592A (en) * 1991-08-08 1998-10-27 Rothmans, Benson & Hedges Inc. Et Al. Control of cigarette smoke chemistry
WO1993008706A1 (fr) * 1991-10-30 1993-05-13 Rothmans, Benson & Hedges Inc. Nouvelle cigarette
WO1993008708A1 (fr) * 1991-10-30 1993-05-13 Rothmans, Benson & Hedges Inc. Nouvelle cigarette pouvant etre fumee plusieurs fois
EP0540362A1 (fr) * 1991-10-30 1993-05-05 Rothmans, Benson & Hedges Inc. Nouveau système de cigarette
EP0540361A1 (fr) * 1991-10-30 1993-05-05 Rothmans, Benson & Hedges Inc. Nouveau système de cigarette pour fumer en plusieurs fois
TR26626A (tr) * 1992-12-18 1995-03-15 Rothmans Benson And Hedges Inc Yeni cok icimli sigara sistemi.
TR28750A (tr) * 1992-12-18 1997-02-28 Rothmans Benson & Hedges Münferit sigaralarin, kismen icilmesi, söndürülmesi ve ondan sonra tekrar icilmesine, müsaade eden yeni bir sigara strüktürü.
WO1994014345A1 (fr) * 1992-12-24 1994-07-07 Rothmans International Services Limited Filtre de cigarette en forme de tige et cigarettes comprenant un tel filtre
EP2773230B1 (fr) 2011-11-03 2020-07-22 Acetate International LLC Produits de rubans de câble à denier élevé par filament et à fin denier total

Also Published As

Publication number Publication date
ZA905255B (en) 1991-03-27
IE902555A1 (en) 1991-02-27
GB8916137D0 (en) 1989-08-31
AU637382B2 (en) 1993-05-27
AU5873190A (en) 1991-01-17
CA2021199A1 (fr) 1991-01-15
EP0408354A3 (fr) 1994-03-30
JPH03206876A (ja) 1991-09-10

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