EP0528186B1 - Cigarette à filtre coaxiale - Google Patents

Cigarette à filtre coaxiale Download PDF

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Publication number
EP0528186B1
EP0528186B1 EP92112342A EP92112342A EP0528186B1 EP 0528186 B1 EP0528186 B1 EP 0528186B1 EP 92112342 A EP92112342 A EP 92112342A EP 92112342 A EP92112342 A EP 92112342A EP 0528186 B1 EP0528186 B1 EP 0528186B1
Authority
EP
European Patent Office
Prior art keywords
filter
inner core
coaxial
cigarette according
outer jacket
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.)
Expired - Lifetime
Application number
EP92112342A
Other languages
German (de)
English (en)
Other versions
EP0528186A1 (fr
Inventor
Werner Dr. Schneider
Bernd-Henrik Dr. Müller
Gert Dr. Rudolph
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.)
British American Tobacco Germany GmbH
Original Assignee
British American Tobacco Germany GmbH
BAT Cigarettenfabriken GmbH
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 British American Tobacco Germany GmbH, BAT Cigarettenfabriken GmbH filed Critical British American Tobacco Germany GmbH
Publication of EP0528186A1 publication Critical patent/EP0528186A1/fr
Application granted granted Critical
Publication of EP0528186B1 publication Critical patent/EP0528186B1/fr
Anticipated expiration legal-status Critical
Expired - Lifetime 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

  • the invention relates to a coaxial filter cigarette of the type specified in the preamble of claim 1.
  • coaxial smokable articles ie in particular coaxial cigars or cigarettes with an inner core which is surrounded by a jacket made of tobacco material.
  • the basic principle of such a coaxial cigarette is known for example from FR-PS 998 556, wherein the inner core consists of a tobacco of lower quality, which is surrounded by an annular jacket made of tobacco of high quality. This allows savings to be made in terms of the cost of the tobacco materials used.
  • a coaxial filter cigarette is known from DE-PS 37 43 597 and has a strand part and a filter part; the strand part contains an inner core made of a largely residue-free smoldering material, in particular tobacco material, a covering for the inner core, an outer casing made of a tobacco and / or non-tobacco material coaxially surrounding the inner core or its covering, as well as a covering for the outer covering.
  • the filter part has a filter core, an air-impermeable covering for the filter core, a filter jacket and a covering for the filter jacket.
  • the basic principle of this coaxial filter cigarette is that two areas are distinguished in the radial direction, namely the zone of the main heat source on the one hand and the zone in which the major part of the aerosol entering the smoker's mouth is generated.
  • the heat generation zone is in the outer jacket and the aerosol generation zone is in the inner core of the strand part.
  • Another coaxial filter cigarette is known from DE-PS 39 01 226.
  • This also has a strand part and a filter part, the strand part containing an inner core made of a largely residue-free glowing material, an essentially air-impermeable sheathing, an outer sheath coaxially surrounding the inner core or its sheathing and a sheath for the outer sheath.
  • the filter part is designed as a coaxial filter with a filter core surrounded by an air-impermeable covering and a filter jacket.
  • the zone which is only required as a heat source and the zone in which the major part of the aerosol entering the smoker's mouth is generated are spatially separated. This essentially causes the smoke that enters the smoker's mouth to have a high proportion of flavor-relevant components and a very low proportion of undesirable ones Combustion products. Since the heat-generating zone is arranged in the inner core of the strand part, the combustion products are shielded by the outer jacket of the strand part and are therefore largely emitted via the main smoke, which can be used as one of several requirements for reducing the secondary smoke.
  • the mixture in the strand part generally delivers such large amounts of smoke that the coaxial filter element alone is not sufficient for filtering, diffusion and ventilation elements, optionally with further intermediate elements and outer channels, are additionally arranged between the filter element and the strand part.
  • claim 1 is based on the European patent application EP 0 365 882. This relates to a coaxial cigarette, which has a low CO yield even without a filter and a satisfactory smoke supply and is said to be reduced in the secondary smoke.
  • the invention is therefore based on the object to provide a coaxial filter cigarette of the type specified, in which the above disadvantages do not occur; in particular, a significant reduction in secondary smoke is made possible.
  • the advantages achieved with the invention are based on the fact that a larger proportion of the smoke produced is passed into the main smoke than in the known coaxial versions and than in normal lines. A large proportion of the smoke that usually comes into the secondary smoke after it is produced is therefore diverted into the main smoke even when using conventional cigarette paper, with the increased main smoke fraction then being filtered through a correspondingly more effective filter.
  • peripheral tobacco when choosing peripheral tobacco, one can now concentrate on minimizing precursors for irritating smoke substances.
  • the coaxial filter cigarette shown in FIG. 1, generally indicated by the reference numeral 10, has a strand part 12, to which a coaxial filter part 13 is attached with the usual manufacturing techniques.
  • the strand part 12 contains an inner core 14 with a covering 16 and an outer jacket 18 with a covering 20.
  • the filter part 13 has a coaxial filter element 15 comprising a filter core 22 with a covering 24 and a filter jacket 26 with a covering 28.
  • the coaxial filter element 15 can be ventilated.
  • the ventilation means is indicated as a line of punctiform ventilation openings 30, which also extend through the circumference of the coaxial filter element through the covering paper, not shown.
  • the coaxial strand part is used to generate smoke and has a length of 25 to 85 mm and a diameter of 7 to 9 mm, i.e. the usual dimensions of conventional cigarettes.
  • the inner core 14 of the strand part has a diameter of 40 to 80%, preferably 60 to 70% of the outer diameter of the cigarette.
  • the material of the inner core 14 is designed with a packing density of 190 to 250 mg / cm 3 , preferably 210 to 230 mg / cm3. Additives for controlling the combustion are added to the material of the inner core 14 if necessary.
  • the material of the inner core is such that the tensile resistance per unit length, based on the packing density, is 0.09 to 0.15, preferably 0.1 to 0.12 (mm Ws) cm 2 / mg.
  • the envelope 16 of the inner core of the strand part 12 consists of paper, a film of tobacco material or another suitable material. Its air permeability is below 30 ISO units, preferably below 10 ISO units.
  • the outer jacket 18 coaxially surrounds the inner core or its sheath 16.
  • the material of the outer jacket 18 is designed with a packing density of 140 to 200 mg / cm 3 , preferably 150 to 180 mg / cm 3 .
  • the ratio of tensile resistance per unit length to packing density is 0.035 to 0.08, preferably 0.04 to 0.05 (mm Ws) cm 2 / mg.
  • the sheath 20 of the outer jacket 18 of the strand part 12 has an air permeability of less than 40 ISO units, preferably 15 to 25 ISO units; it consists of a cigarette paper, which can be a standard paper. Special papers can also be used to reduce secondary smoke.
  • the casing 20 of the outer casing 18 optionally contains additives for controlling the combustion.
  • the outer casing 20 of the outer casing 18 of the strand part 12 can be provided with segment perforations for controlling the temperature gradient in the outer casing 18; the use and / or design of these segment perforations depends on the other materials used.
  • the coaxial filter 15 consists of a filter core 22 with a covering 24 and a filter jacket 26 with a covering 28.
  • the inner core 14 is filled with so-called fillers, that is to say with filling tobacco, generally of poor quality, and / or ribs. Tobacco foils are also suitable.
  • the sheath 16 of the inner core 14 is a paper or tobacco film with the air permeability described.
  • the outer casing 18 consists of aromatic tobacco, which essentially are responsible for the production of the flavor relevant aerosol. Otherwise, the design features stated above apply.
  • the filter core 22 has a diameter which is up to 2 mm larger than the diameter of the strand inner core, and has a degree of retention in the filter core of more than 90%, preferably more than 95%, with degrees of ventilation of 30 to 80% of the filter.
  • the main smoke is thus filtered in an advantageous manner.
  • the filter jacket 26, on the other hand, has a retention degree of less than 30%, so that the filtering of the flavor-relevant aerosol is less, which brings about a positive taste.
  • the degrees of retention relate to the total mass of the nicotine-free dry condensate flowing into the respective filter zone.
  • the filter core 22 and the filter jacket 26 As materials for the two filter zones, i.e. the filter core 22 and the filter jacket 26, the usual filter materials come into question, as are currently used in the cigarette industry.
  • the inner core consists of flavor-rich tobacco, while the outer jacket 18 of the tobacco rod 12 contains filling tobacco, ribs or tobacco foil.
  • the filter 15 is then constructed such that the filter core 22 has a smaller diameter than the inner core 14 and has a degree of retention of less than 30%.
  • the outer core accordingly has a retention rate of over 90%.
  • the main smoke condensate is usually determined according to the smoking standard, while the secondary smoke is collected during smoking and the condensate is determined.
  • the values determined show that with approximately the same total smoke condensate, ie from main and secondary smoke, the secondary smoke condensate of the cigarette according to the invention turns out to be approximately 20% less than that of the comparative sample.
  • the ratio of main smoke to secondary smoke condensate increases from 1.0 for the conventional comparative sample to 1.4 for the cigarette according to the invention. Nevertheless, the total volume of CO determined after smoking remains practically the same at 21 compared to 20 ml in the main smoke.
  • known ventilated mouthpieces or filters are also suitable for use with the tobacco strands specified above, which allow a filter ventilation degree of at least 40% and lead to a retention degree of at least 40% (based on those flowing into the filter Total mass of the nicotine-free dry condensate.)

Landscapes

  • Cigarettes, Filters, And Manufacturing Of Filters (AREA)
  • Paper (AREA)

Claims (17)

  1. Cigarette à filtre coaxiale, comportant :
    a) un tronçon cylindrique avec :
    a1) un noyau intérieur fait de tabac ou d'un matériau autre que le tabac, se consumant lentement, dans une large mesure sans laisser de résidus;
    a2) une gaine pour le noyau intérieur;
    a3) une enveloppe extérieure entourant le noyau intérieur ou sa gaine et faite de tabac ou d'un matériau autre que du tabac, et
    a4) une gaine pour l'enveloppe extérieure et
    b) une partie filtre, cigarette dans laquelle
    c) le noyau intérieur (14) présente un diamètre correspondant à 45-80 % du diamètre extérieur de la cigarette à filtre (10) et
    d) la densité de bourrage du noyau intérieur (14) est supérieure à la densité de bourrage de l'enveloppe extérieure (18), ladite cigarette étant caractérisée en ce que
    e) la résistance au tirage par unité de longueur mise en relation avec la densité de bourrage, est plus grande dans le noyau intérieur (14) que dans l'enveloppe extérieure (18), en ce que
    f) la perméabilité à l'air de la gaine (16) du noyau intérieur (14) est inférieure à la perméabilité à l'air de la gaine (20) de l'enveloppe extérieure (18), eten ce que
    g) la partie filtre (13) présente un taux de ventilation du filtre d'au moins 30 % et un taux de rétention d'au moins 40 %.
  2. Cigarette à filtre coaxiale selon la revendication 1, caractérisée en ce que la densité de bourrage du noyau intérieur (14) est de 190 à 250 mg/cm3.
  3. Cigarette à filtre coaxiale selon l'une des revendications 1 à 2, caractérisée en ce que la résistance au tirage par unité de longueur mise en relation avec la densité de bourrage, est de 0,09 à 0,15 (mm WS) cm2/mg dans le noyau intérieur (14).
  4. Cigarette à filtre coaxiale selon l'une des revendications 1 à 3, caractérisée en ce que le noyau intérieur (14) du tronçon cylindrique (12) contient des additifs pour contrôler les processus thermiques.
  5. Cigarette à filtre coaxiale selon l'une des revendications 1 à 4, caractérisée en ce que la gaine (16) du noyau intérieur (14) présente une perméabilité à l'air inférieure à 30 unités ISO.
  6. Cigarette à filtre coaxiale selon l'une des revendications 1 à 5, caractérisée en ce que la densité de bourrage de l'enveloppe extérieure (18) est de 140 à 200 mg/cm3.
  7. Cigarette à filtre coaxiale selon l'une des revendications 1 à 6, caractérisée en ce que la résistance au tirage par unité de longueur mise en relation avec la densité de bourrage, est de 0,035 à 0,08 (mm WS) cm2/mg dans l'enveloppe extérieure (18).
  8. Cigarette à filtre coaxiale selon l'une des revendications 1 à 7, caractérisée en ce que l'enveloppe extérieure (18) du troncon cylindrique (12) contient des additifs pour contrôler les processus thermiques.
  9. Cigarette à filtre coaxiale selon l'une des revendications 1 à 8, caractérisée en ce que la gaine (20) de l'enveloppe extérieure (18) présente une perméabilité à l'air inférieure à 40 unités ISO.
  10. Cigarette à filtre coaxiale selon l'une des revendications 1 à 9, caractérisée en ce que la gaine (20) de l'enveloppe extérieure (18) du tronçon cylindrique (12) contient des additifs pour contrôler les processus thermiques.
  11. Cigarette à filtre coaxiale selon l'une des revendications 1 à 10, caractérisée en ce qu'il est prévu une partie filtre coaxiale (13) comportant un noyau filtrant (22), dont le diamètre intérieur correspond environ au diamètre du noyau intérieur (14) du tronçon cylindrique (12), et une enveloppe filtrante (26).
  12. Cigarette à filtre coaxiale selon l'une des revendications 1 à 11, caractérisée en ce que le noyau intérieur (14) se compose de tabac riches en arômes, et l'enveloppe extérieure (18), de charges.
  13. Cigarette à filtre coaxiale selon l'une des revendications 11 ou 12, caractérisée en ce que pour des taux de ventilation de 30 à 80 %, la partie filtre (13) autorise, respectivement, des taux de rétention inférieurs à 30 % dans le noyau filtrant (22), et supérieurs à 90 % dans l'enveloppe filtrante (26).
  14. Cigarette à filtre coaxiale selon l'une des revendications 11 à 13, caractérisée en ce que le diamètre du noyau filtrant (22) est un peu plus petit que le diamètre intérieur du noyau intérieur (14).
  15. Cigarette à filtre coaxiale selon l'une des revendications 1 à 11, caractérisée en ce que le noyau intérieur (14) se compose de charges, et l'enveloppe extérieure (18), de tabacs riches en arômes.
  16. Cigarette à filtre coaxiale selon la revendication 15, caractérisée en ce que pour des taux de ventilation de 30 à 80 %, la partie filtre (13) autorise, respectivement, des taux de rétention supérieurs à 90 % dans le noyau filtrant (22), et inférieurs à 30 % dans l'enveloppe filtrante (26).
  17. Cigarette à filtre coaxiale selon la revendication 16, caractérisée en ce que le diamètre intérieur du noyau filtrant (22) est un peu plus grand que le diamètre intérieur du noyau intérieur (14).
EP92112342A 1991-08-19 1992-07-20 Cigarette à filtre coaxiale Expired - Lifetime EP0528186B1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE4127420A DE4127420C2 (de) 1991-08-19 1991-08-19 Koaxiale Filtercigarette
DE4127420 1991-08-19

Publications (2)

Publication Number Publication Date
EP0528186A1 EP0528186A1 (fr) 1993-02-24
EP0528186B1 true EP0528186B1 (fr) 1996-09-04

Family

ID=6438625

Family Applications (1)

Application Number Title Priority Date Filing Date
EP92112342A Expired - Lifetime EP0528186B1 (fr) 1991-08-19 1992-07-20 Cigarette à filtre coaxiale

Country Status (6)

Country Link
US (1) US5379789A (fr)
EP (1) EP0528186B1 (fr)
CA (1) CA2074300C (fr)
DE (2) DE4127420C2 (fr)
ES (1) ES2093743T3 (fr)
HK (1) HK1005840A1 (fr)

Families Citing this family (13)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE4321069C2 (de) * 1993-06-24 1998-09-10 Bat Cigarettenfab Gmbh Koaxiale Filtercigarette
DE4435110C2 (de) * 1994-09-30 1999-01-21 Bat Cigarettenfab Gmbh Teilbarer Tabakstrang
DE19703003A1 (de) 1997-01-28 1998-07-30 Bat Cigarettenfab Gmbh Cigarette mit reduzierter Fleckenbildung und vermindertem Nebenstromrauch
DE19718296B4 (de) * 1997-04-30 2006-06-29 British American Tobacco (Germany) Gmbh Ventilierte Filtercigarette mit einem koaxialen Filterelement
DE19722812C2 (de) * 1997-05-30 2003-02-13 Bat Cigarettenfab Gmbh Ultraleicht-Koaxialcigarette mit mehrteiligem Filter
GB9712815D0 (en) * 1997-06-19 1997-08-20 British American Tobacco Co Smoking article and smoking material therefor
DE19746664A1 (de) * 1997-10-23 1999-05-06 Reemtsma H F & Ph Dünne Cigarette
DE19757712C1 (de) * 1997-12-23 1999-06-24 Bat Cigarettenfab Gmbh Koaxialcigarette mit Querstromsperre und Verfahren zur Herstellung einer Koaxialcigarette
EP1449447B1 (fr) 2001-11-05 2012-02-29 Japan Tobacco Inc. Cigarette à faible propagation de flamme
US7503330B2 (en) * 2003-09-30 2009-03-17 R.J. Reynolds Tobacco Company Smokable rod for a cigarette
US20050066986A1 (en) * 2003-09-30 2005-03-31 Nestor Timothy Brian Smokable rod for a cigarette
CN101991189B (zh) * 2010-11-26 2013-02-20 云南瑞升烟草技术（集团）有限公司 带有轴芯的减害降焦烟支
JP7021079B2 (ja) * 2015-11-12 2022-02-16 フィリップ・モーリス・プロダクツ・ソシエテ・アノニム 複数構成要素エアロゾル形成物品

Family Cites Families (12)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR887956A (fr) * 1941-05-02 1943-11-29 Fides Gmbh Procédé pour prolonger la durée de vie des couches à haute émissivité secondaire
FR998556A (fr) * 1945-10-29 1952-01-21 Papeteries De Mauduit Sa Des Cigarette
FR1322254A (fr) * 1962-02-14 1963-03-29 Cigare à deux étages et cigarette à deux étages
US3356094A (en) * 1965-09-22 1967-12-05 Battelle Memorial Institute Smoking devices
GB1086443A (en) * 1966-05-03 1967-10-11 James Alexander Everet Bell Cigarette
GB1228747A (fr) * 1967-09-07 1971-04-15
US4219031A (en) * 1979-03-05 1980-08-26 Philip Morris Incorporated Smoking product having core of fibrillar carbonized matter
GB2070409A (en) * 1980-01-18 1981-09-09 British American Tobacco Co Filament, comprising smoke- modifying agent, in smoking article
GB8502651D0 (en) * 1985-02-01 1985-03-06 British American Tobacco Co Smoking articles
DE3743597C1 (de) * 1987-12-22 1989-02-16 Bat Cigarettenfab Gmbh Koaxialcigarette
DE3836210C1 (fr) * 1988-10-24 1989-10-12 B.A.T. Cigarettenfabriken Gmbh, 2000 Hamburg, De
DE3901226C1 (fr) * 1989-01-17 1990-07-26 B.A.T. Cigarettenfabriken Gmbh, 2000 Hamburg, De

Also Published As

Publication number Publication date
EP0528186A1 (fr) 1993-02-24
ES2093743T3 (es) 1997-01-01
DE59207041D1 (de) 1996-10-10
HK1005840A1 (en) 1999-01-29
US5379789A (en) 1995-01-10
DE4127420A1 (de) 1993-02-25
CA2074300A1 (fr) 1993-02-20
CA2074300C (fr) 2001-07-17
DE4127420C2 (de) 1996-07-25

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