EP0716816B1 - Cigarette à filtre segmentée - Google Patents

Cigarette à filtre segmentée Download PDF

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Publication number
EP0716816B1
EP0716816B1 EP95119328A EP95119328A EP0716816B1 EP 0716816 B1 EP0716816 B1 EP 0716816B1 EP 95119328 A EP95119328 A EP 95119328A EP 95119328 A EP95119328 A EP 95119328A EP 0716816 B1 EP0716816 B1 EP 0716816B1
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EP
European Patent Office
Prior art keywords
filter
segment
jacket
draw
resistance
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
EP95119328A
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German (de)
English (en)
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EP0716816A2 (fr
EP0716816A3 (fr
Inventor
Werner Dr. Schneider
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
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Application filed by British American Tobacco Germany GmbH, BAT Cigarettenfabriken GmbH filed Critical British American Tobacco Germany GmbH
Publication of EP0716816A2 publication Critical patent/EP0716816A2/fr
Publication of EP0716816A3 publication Critical patent/EP0716816A3/fr
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Publication of EP0716816B1 publication Critical patent/EP0716816B1/fr
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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

Definitions

  • the invention relates to a segment filter cigarette according to the Preamble of claim 1.
  • a common problem with conventional cigarettes relates to the fact that they are used in standard smoking an increase in the amount of condensate per train with increasing smoke length or show number of moves. Because light and ultra light Cigarettes only according to the value printed on the box may have low amounts of condensate per total cigarette, this change in the amount of condensate causes these cigarettes insufficient when smoking and on the first few moves Have plenty of flavor and only after a few moves the expected Achieve taste.
  • the smoking article described there has a tobacco rod with two axial segments, the segment which is not lit, has an average density that is at least Is 20% greater than the average density of the segment to be lit. Furthermore, the segment to be lit has a nicotine content, which is higher than that of the non-ignitable Segments in this way, even with the first moves to deliver a strong taste impression.
  • segment filter cigarette which the Overcomes the disadvantages of the prior art described above.
  • a segment filter cigarette is proposed that do not have an abrupt difference in taste Has segment transition and the same or similar tobacco in can use the segments. This can increase the vigor the first few moves not only due to the tobacco rod construction, but also by combining it with a special filter can be reinforced.
  • Such a coaxial structure allows a different one Design of the inner and outer sections of the segments regarding the desired taste effect.
  • the design of the train resistance in the inner and outer Sections affect the taste effect in this respect that no one is caused by different tobacco abrupt difference in taste at the segment transition arises even though the inner cores of the segments as well as the coats the segments have the same or similar condensate potential, which means that the same for the successive segments or very similar tobacco can be used.
  • the cigarette created according to the invention very good taste characteristics even during the first puffs of smoke has that over the entire course of smoking are essentially maintained. This will the total amount of condensate generated during smoking distributed more evenly across the individual trains.
  • the length of the entire tobacco rod of an inventive Cigarette can be 40 to 100 mm and will preferably be 45 to 70 mm.
  • the inner cores of the tobacco rod a diameter of 3 to 6 mm and preferably 4.5 to 5.5 mm exhibit. What is the length of the first burning segment relates, this is the preferred embodiment 0.1 to 0.8 times and preferably 0.3 to 0.4 times correspond to the total length of the tobacco rod.
  • Both the inner cores and the shells preferably have an additional joint covering of the different segments, which is made of paper or tobacco foil.
  • This measure can be an economical manufacture for the longitudinal axial Strand formation can be guaranteed.
  • this common wrapping can also be used as a single wrapping serve.
  • the segment filter cigarette according to the invention is preferred characterized in that it is a coaxial, from a Filter core, an envelope for the filter core, a filter jacket and an envelope for the filter jacket existing Has filter, the filter core and filter jacket from known Filter materials, in particular made of fibers or fleece are.
  • the diameter of the filter core can be 2.5 up to 6.5 mm and preferably 3.5 to 5.5 mm in size.
  • the envelope of the filter core advantageously consists of Paper or tobacco foil, foil material is also possible Cellulose acetate or polyolefins, such as in particular polyethylene or polypropylene, and has low air permeability on or is preferably impermeable to air.
  • the Filters have further filter segments adjoining the mouth.
  • the coaxial filter elements are one preferred Design of the segment filter cigarette according to the invention trained that one of the two coaxial filter parts, namely Filter core or jacket, has a high filter efficiency, while the other has a low filter efficiency having.
  • the first embodiment of the segment filter cigarette according to the The present invention is characterized in that the ratio the tensile resistance of the jacket of the first to burn Segment to the tensile resistance of the inner core of the first burning Segment is smaller than the ratio of the tensile resistance of the jacket of the filter-side segment to the draw resistance the inner core of the filter-side segment, where the tobacco of both coats has a high condensate potential.
  • the filter-side segment is preferably the smoke its inner core, i.e. the area with low condensate potential, sucked in, so that the taste effect of the two Segments remain essentially the same strength.
  • Segment filter cigarette is referred to as Version A can be called.
  • the version A cigarette has a draw resistance of the jacket of the first burning segment, based on 63 mm tobacco rod length 20 to 40 mm WS, preferably 25 to 35 mm WS, while the tensile resistance of the inner core is 300 to 600 mm WS and preferably about 450 to 550 mm WS.
  • the Version A can also be characterized in that the Draw resistance of the jacket of the filter-side segment, related on 63 mm tobacco rod length, 100 to 300 mm WS, preferably is about 130 to 170 mm WS, while the tensile resistance of the Inner core of this segment 50 to 150 mm WS and preferably is about 75 to 125 mm WS.
  • a coaxial filter assigned to this version A advantageously has a filter efficiency of the filter core of 10 to 60%, preferably 10 to 30%, while filtering effectiveness of the filter jacket 70 to 100%, preferably 90 to Is 100% and the filter has a degree of ventilation from 0 to Has 80%.
  • a segment filter cigarette according to the present invention it is possible to change the tensile resistances of the filter elements in Depending on the filter ventilation used, that the ratio of the to the periphery of the coaxial The amount of smoke flowing into the core of the filter coaxial filter inflowing amount of smoke essentially equal to the ratio of those flowing out of the tobacco jacket Amount of smoke to the amount of smoke flowing out of the tobacco core, after the first one is burned Tobacco rod segments.
  • the coaxial filter another significant amount to increase the strength of the first moves bring. This happens because, depending on the Difference between the flow conditions in the line, which again from the changing tension resistance conditions there depend, and the flow conditions in the filter changing proportion of smoke in the highly effective filter jacket to be led.
  • Version B the inventive one Segment filter cigarette regarding the tobacco rod and the Form filters are described. This version is called Version B designated.
  • the segment filter cigarette according to version B of the present Invention is characterized in that the ratio the tensile resistance of the jacket of the first burning segment the tensile resistance of the inner core of the one that burns first Segment is greater than the ratio of the train resistance of the jacket of the filter-side segment to the tensile resistance of the Inner core of the filter-side segment, the tobacco of The inner cores are high and the tobacco of the coat is low Have condensate potential.
  • the train resistance first preferably the smoke from the inner core of the sucked first burning segment, leaving a strong taste impression when smoking and the first few moves.
  • the first burning segment is smoked a gradual adaptation to the flow conditions in the filter-side segment in which - again through the setting the train resistance - preferably the smoke from the coat with the lower condensate potential.
  • the taste impression of the first few moves is strong enough and there is no abrupt change in taste at the segment transition, i.e. also here the amount of condensate available becomes even distributed on every train.
  • the segment filter cigarette according to version B the tensile resistance of the jacket is the first burning segment, based on 63 mm tobacco rod length, 100 to 300 mm WS and preferably about 125 to 175 mm WS, while the tensile resistance of the inner core is 50 to 100 mm WS and preferably about 60 to 80 mm WS.
  • Version B is the segment filter cigarette according to the invention characterized in that the train resistance of the jacket of the filter-side segment, based on 63 mm Tobacco rod length, 25 to 100 mm WS and preferably 30 mm WS while the tensile resistance of the inner core of this segment 125 to 300 mm WS and preferably 150 mm WS.
  • the coaxial filter assigned to this version B is designed in such a way that the filter effectiveness of the filter core is 70 to 100%, preferably 90 to 100%, while the filter efficiency of the filter jacket 10 to 60%, preferably 10 to 30% and the filter has a degree of ventilation of 0 to 80% Has.
  • Both versions of the segment filter cigarette according to the invention described above also show on light and ultralight cigarettes the advantage that already when smoking and when the first few moves a relatively strong one, only when smoking the taste impression changes to a small extent.
  • Segment filter cigarette has one to be lit and first burning coaxial segment 1 and a mouth or filter side coaxial segment 2, which together the tobacco rod form.
  • a coaxial filter 3 is located on the filter-side segment 2 attached to the tobacco rod, according to the prior art in general by a covering paper, not shown in the figure.
  • the first burning segment 1 has the following components on: an inner core 1i made of a tobacco material, a Envelope 11 for the inner core 1i, a surrounding the inner core Sheath 1a and an envelope 12 for the sheath 1a. That on the second segment 2 adjoining the first segment 1 has the the following components: an inner core 2i made of tobacco material, an envelope 21 for the inner core 2i, a jacket 2a, the surrounds the inner core 2i and its casing 21, and a casing 22 for the coat.
  • the envelopes 11 and 21 for the inner cores 1i and 2i are here made of paper or tobacco foil and have a low air permeability. You can also completely be impermeable to air.
  • the outer coverings 12, 22 of the shells 1a and 2a are also formed from cigarette paper or tobacco foil and preferred highly breathable.
  • both the inner cores 1i, 2i as well as the tobacco coats 1a, 2a of the two Segments 1, 2 additionally have a common outer covering to have; in the figure, this common outer wrapper is for the two inner cores 1i, 2i by reference numeral 25 and common outer casing for the two coats 1a, 2a through the reference numeral 35 indicated.
  • the tobaccos of the two inner cores 1i, 2i have the same or a very similar condensate potential; also the tobacco of the both coats 1a, 2a have the same or a very similar one Condensate potential, but the condensate potential of the inner cores 1i, 2i and shells 1a, 2a very different are, i.e. the condensate potential is very low and the other relatively high.
  • a segment 3 is connected to the segment 2 by a coaxial filter Filter core 3i, an envelope 31 for the filter core 3i, one Filter casing 3a and an envelope 32 for the filter casing 3a on.
  • the connection between tobacco rod and filter 3 is made with the usual means, e.g. B. a covering paper.
  • the wrapper 31 is made of paper or a film, e.g. out Cellulose acetate or polyolefins, e.g. Polyethylene or Polypropylene, and has low air permeability. Prefers it is impermeable to air.
  • Both filter core 3i and filter jacket 3a consist of the usual filter materials in the form of fibers or nonwovens, one of the two filter parts, ie filter core 3a or Filter jacket 3a, is highly effective while the other is relatively ineffective.
  • the diameter of the filter core 3i corresponds to that of the tobacco rod core.
  • the sheath 32 for the filter jacket 3a can either be inherent be air permeable or from an air impermeable Be made of material in the usual way, for example with laser beams, perforations and thereby making it permeable to air to the desired To supply filter ventilation.
  • the basic principle of this segment cigarette is that through suitable adaptation of the condensate potentials of the two Segments 1, 2 the force of the first moves is increased.
  • the first segment 1 is smoked, essentially the smoke from its area with high condensate potential sucked in, which is what is coordinated accordingly
  • the two segments 1, 2 of the tobacco rod can be the coaxial Filter 3 is another significant contribution to raising the Achieve the strength of the first moves. This happens because that depending on the difference between the flow conditions in the strand, which in turn is changing from the depend on the train resistance conditions there, and the flow conditions in the filter an ever increasing proportion of the Smoke introduced into the respective highly effective filter area until segment 1 is smoked.
  • the strand length is Ls, i.e. the length of the total, tobacco rod consisting of the two segments 1 and 2, about 60 mm; the diameter of the inner core 1i, 2i of the two Segments is about 5 mm.
  • the total diameter of the tobacco rod and the filter 3 has the usual value of about 7.9 mm.
  • Version A has the tobacco of both coats 1a, 2a a very high condensate potential, both being the same as well as different tobacco materials are used can, while according to the general explained above Adjust the tobacco materials of the two inner cores 1i, 2i have very low condensate potential. Become same tobacco materials used, so the different condensate potentials due to different tobacco densities be achieved. However, different tobaccos are preferred used.
  • the tobacco materials have the two inner cores 1i, 2i, which are either the same or different can have a very high condensate potential, while the tobacco materials of the two coats 1a, 2a, which are also the same or can be different, a low condensate potential to have.
  • the tobacco materials of the two coats 1a, 2a which are also the same or can be different, a low condensate potential to have.
  • the two tobacco rod segments 1, 2 have one clearly different ratio q of their respective train resistances Za / Zi, where Za is the tensile resistance of the tobacco jacket 1a, 2a and Zi mean the tensile resistance of the inner core 1i, 2i.
  • the tobaccos of the two inner cores have 1i and 2i the same or a very similar condensate potential that however, is much lower than the condensate potential of the two coats 1a and 2a.
  • the smoke and Taste conditions will further depend on the ratio the tensile resistance Za of a jacket to the tensile resistance Zi one Inner core turned off.
  • the ratio the tensile resistances q1 in segment 1 must be less than the ratio q2 of the tensile resistances Za / Zi in segment 2.
  • the choice of the length L1 of the first segment 1 determines the number the "reinforced" trains, i.e. the size of the effect achieved.
  • the length has L1, based on the Total length Ls of the tobacco rod with the two segments 1, 2, a value of 0.35 Ls.
  • the tensile resistance Za of the jacket 1a of the first segment 1 is, based on a total length of the tobacco rod of 63 mm, about 30 mm WS.
  • the tensile resistance Zi of the inner core 1i of the first segment 1 has, based on the total length of the tobacco rod of 63 mm, a value of about 500 mm WS.
  • the length of the second segment 2 results from that above mentioned adjustment of the length L1 of the first segment in this example 0.65 Ls.
  • the tensile resistance Za of the jacket 2a of the second segment 2 has, based on the total length of the tobacco rod with the two segments 1 and 2 of 63 mm, a value of about 150 mm WS.
  • the tensile resistance Zi of the inner core 2i of the second segment 2 is, based on the total length of the tobacco rod 63 mm, about 100 mm WS.
  • the filter effectiveness of the inner core 3i of the filter 3 has one Value of about 20%, while the filter effectiveness of the jacket 3a of the filter 3 is approximately 95%.
  • the filter ventilation caused either by the inherent Porosity of the filter casing 32 or through perforations, has a value of about 40% to 70%.
  • train resistances are dependent on the one used To specify filter ventilation of filter 3 so that the ratio sf of the sheath 3a of the coaxial filter 3 flowing smoke stream to the 3i in the filter core of the coaxial filter 3 inflowing smoke flow about the same the ratio s2 of the shell 2a of the second segment 2 flowing out after smoking the first segment 1 Smoke flow to that from the inner core 2i of the second segment 2 flowing out after smoking the first segment 1 Is smoke flow.
  • the segment is exposed to wear and tear 1 initially preferably smoke from the jacket 1a of this segment 1 sucked in, which gives a relatively strong taste impression already when smoking and the first few puffs of this cigarette arises.
  • the tensile resistance ratio q changes when smoking of segment 1 inevitably until about the tensile resistance ratio q2 of segment 2 is reached.
  • This remains constant during further smoking, as explained by Adjustment of train resistance and filter 3 causes that smoke from segment 2 preferably smoke from the inner core 2i is sucked.
  • its filter jacket 3a with version A a high filter efficiency has, while the filter effectiveness of the filter core 3i is comparatively small.
  • a growing proportion of smoke in the highly effective filter jacket 3a until segment 1 is smoked.
  • the length L1 of the first segment 1 has, based on the total length of the tobacco rod, about the same value as for the Version A.
  • the tensile resistance Za of the jacket 1a of the segment 1 is based on the total length of the tobacco rod of 63 mm, approximately 150 mm WS.
  • the tensile resistance Zi of the inner core 1i of the first segment 1 based on the total length of the tobacco rod of 63 mm, at about 70 mm WS.
  • the tensile resistance Za of the jacket 2a of the second segment 2 is, based on a total length of the tobacco rod of 63 mm, about 30 mm WS.
  • the tensile resistance Zi of the inner core 2i of the second segment 2 is based on the total length of the tobacco rod of 63 mm at about 150 mm WS.
  • the inner core 3i of the coaxial filter 3 has a filter effectiveness of about 95%, while the filter effectiveness of the jacket 3a of the coaxial filter 3 has a filter efficiency of approximately Has 20%.
  • the filter ventilation is around 40% to 70%.
  • the filter helps to increase the strength of the first moves in that a growing proportion of the smoke in the highly effective filter segment, namely in Depends on the difference between the flow conditions in the line and the flow conditions in the filter, up to segment 1 is smoked.

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  • Cigarettes, Filters, And Manufacturing Of Filters (AREA)
  • Fats And Perfumes (AREA)
  • Filtering Of Dispersed Particles In Gases (AREA)

Claims (19)

  1. Cigarette filtre segmentée
    a) avec un boudin de tabac à au moins deux segments (1, 2) constitués de garnitures de tabac différentes,
    b) avec une enveloppe pour le boudin de tabac, et
    c) avec un filtre (3),
       caractérisée par les caractéristiques suivantes :
    d) les segments (1, 2), au nombre d'au moins deux, du boudin de tabac ont une structure coaxiale avec chacun
    d1) un noyau intérieur (1i, 2i) en matière tabagique,
    d2) une enveloppe (11, 21) pour le noyau intérieur (1i, 2i), laquelle présente de préférence une faible perméabilité à l'air,
    d3) une gaine (1a, 2a) en matière tabagique, et
    d4) une enveloppe hautement perméable à l'air (12, 22) pour la gaine (1a, 2a) ;
    e) les tabacs des noyaux intérieurs (1i, 2i) des segments (1, 2) ont un potentiel de condensat identique ou très similaire ;
    f) les tabacs des gaines (1a, 2a) des segments (1, 2) ont un potentiel de condensat identique ou très similaire qui se différencie très fortement du potentiel de condensat des noyaux intérieurs (1i, 2i) ;
    g) par le calcul de la résistance au tirage des noyaux intérieurs (1i, 2i) et de celle des gaines (1a, 2a) des segments (1, 2) et par l'adaptation des filtres (3),
    g1) la fumée aspirée au début de la consommation de la cigarette filtre segmentée provient pour l'essentiel de la zone à potentiel de condensat élevé du segment consumé en premier (1), et
    g2) la fumée aspirée à la fin de la consommation du segment côté filtre (2) provient de préférence de la zone de ce segment (2) à plus faible potentiel de condensat.
  2. Cigarette filtre segmentée selon la revendication 1, caractérisée en ce que la longueur totale du boudin de tabac (1, 2) est de 40 à 100 mm, de préférence de 45 à 70 mm.
  3. Cigarette filtre segmentée selon la revendication 1 ou 2, caractérisée en ce que les noyaux intérieurs (1i, 2i) présentent un diamètre de 3 à 6 mm, de préférence de 4,5 à 5,5 mm.
  4. Cigarette filtre segmentée selon l'une des revendications 1 à 3, caractérisée en ce que le segment consumé en premier (1) présente une longueur qui correspond à 0,1 à 0,8 fois, de préférence à 0,3 à 0,4 fois la longueur totale du boudin de tabac (1, 2).
  5. Cigarette filtre segmentée selon l'une des revendications 1 à 4, caractérisée en ce que les noyaux intérieurs (1i, 2i) et/ou les gaines (1a, 2a) du boudin de tabac possèdent une enveloppe extérieure commune supplémentaire (25, 35) qui est fabriquée en papier à cigarettes ou en tabac reconstitué.
  6. Cigarette filtre segmentée selon l'une des revendications 1 à 5, caractérisée en ce qu'elle comporte un filtre coaxial (3) constitué d'un noyau de filtre (3i), d'une enveloppe (31) pour le noyau de filtre (3i), d'une gaine de filtre (3a) et d'une enveloppe (32) pour la gaine de filtre (3a), le noyau de filtre (3i) et la gaine de filtre (3a) étant réalisés à partir de matériaux de filtre connus, en particulier en fibres ou en non-tissé.
  7. Cigarette filtre segmentée selon la revendication 6, caractérisée en ce que le diamètre du noyau de filtre (3i) est de 2,5 à 6,5 mm, de préférence de 3,5 à 5,5 mm.
  8. Cigarette filtre segmentée selon l'une des revendications 6 ou 7, caractérisée en ce que l'enveloppe (31) du noyau de filtre (3i) est constituée de papier ou de pellicule, en particulier d'acétate de cellulose ou de polyoléfines, et présente une faible perméabilité à l'air ou, de préférence, est imperméable à l'air.
  9. Cigarette filtre segmentée selon l'une des revendications 6 à 8, caractérisée en ce que le filtre (3) comporte au moins un segment de filtre contigu supplémentaire côté bouche.
  10. Cigarette filtre segmentée selon l'une des revendications 6 à 9, caractérisée en ce que l'un des deux éléments de filtre coaxiaux (3i, 3a) présente une efficacité de filtrage élevée, tandis que l'autre présente une efficacité de filtrage faible.
  11. Cigarette filtre segmentée selon l'une des revendications 1 à 10, caractérisée en ce que le rapport (q1) de la résistance au tirage de la gaine (1a) du segment consumé en premier (1) à la résistance au tirage du noyau intérieur (1i) du segment consumé en premier (1) est inférieur au rapport (q2) de la résistance au tirage de la gaine (2a) du segment côté filtre (2) à la résistance au tirage du noyau intérieur (2i) du segment côté filtre (2), et en ce que les tabacs des gaines (1a, 2a) des segments (1, 2) présentent un potentiel de condensat élevé.
  12. Cigarette filtre segmentée selon la revendication 11, caractérisée en ce que la résistance au tirage de la gaine (1a) du segment consumé en premier (1), rapportée à une longueur de boudin de tabac de 63 mm, est de 20 à 40 mm de colonne d'eau, de préférence de 25 à 35 mm de colonne d'eau, tandis que la résistance au tirage du noyau intérieur (1i) de ce segment (1), rapportée à une longueur de boudin de tabac de 63 mm, est de 300 à 600 mm de colonne d'eau, de préférence de 450 à 550 mm de colonne d'eau.
  13. Cigarette filtre segmentée selon la revendication 11 ou 12, caractérisée en ce que la résistance au tirage de la gaine (2a) du segment côté filtre (2), rapportée à une longueur de boudin de tabac de 63 mm, est de 100 à 300 mm de colonne d'eau, de préférence de 125 à 175 mm de colonne d'eau, tandis que la résistance au tirage du noyau intérieur (2i) de ce segment (2), rapportée à une longueur de boudin de tabac de 63 mm, est de 50 à 150 mm de colonne d'eau, de préférence de 75 à 125 mm de colonne d'eau.
  14. Cigarette filtre segmentée selon l'une des revendications 11 à 13, caractérisée en ce que l'efficacité de filtrage du noyau de filtre (3i) est de 10 à 60 %, de préférence de 10 à 30 %, tandis que l'efficacité de filtrage de la gaine de filtre (3a) est de 70 à 100 %, de préférence de 90 à 100 %, et en ce que le filtre (3) possède un taux de ventilation de 0 à 80 %.
  15. Cigarette filtre segmentée selon l'une des revendications 11 à 14, caractérisée en ce que les résistances au tirage des éléments de filtre (3i, 3a) sont choisies en fonction de la ventilation de filtre employée, de façon que le rapport (sf) de la quantité de fumée pénétrant dans la gaine (3a) du filtre coaxial (3) à la quantité de fumée pénétrant dans le noyau de filtre (3i) du filtre coaxial (3) soit sensiblement égal au rapport (s2) de la quantité de fumée sortant de la gaine (2a) du second segment (2) à la quantité de fumée sortant du noyau intérieur (2i) du second segment (2) et ce, après la fin de la consommation de chaque segment de boudin de tabac consumé en premier (1).
  16. Cigarette filtre segmentée selon l'une des revendications 1 à 10, caractérisée en ce que le rapport (q1) de la résistance au tirage de la gaine (1a) du segment consumé en premier (1) à la résistance au tirage du noyau intérieur (1i) du segment consumé en premier (1) est supérieur au rapport (q2) de la résistance au tirage de la gaine (2a) du segment côté filtre (2) à la résistance au tirage du noyau intérieur (2i) du segment côté filtre (2), et en ce que le tabac des noyaux intérieurs (1i, 2i) présente un potentiel de condensat élevé.
  17. Cigarette filtre segmentée selon la revendication 16, caractérisée en ce que la résistance au tirage de la gaine (1a) du segment consumé en premier (1), rapportée à une longueur de boudin de tabac de 63 mm, est de 100 à 300 mm de colonne d'eau, de préférence de 125 à 175 mm de colonne d'eau, tandis que la résistance au tirage du noyau intérieur (1i) de ce segment (1), rapportée à la longueur de boudin de tabac de 63 mm, est de 50 à 100 mm de colonne d'eau, de préférence de 70 à 80 mm de colonne d'eau.
  18. Cigarette filtre segmentée selon la revendication 16 ou 17, caractérisée en ce que la résistance au tirage de la gaine (2a) du segment côté filtre (2), rapportée à une longueur de boudin de tabac de 63 mm, est de 25 à 100 mm de colonne d'eau, de préférence de 25 à 40 mm de colonne d'eau, tandis que la résistance au tirage du noyau intérieur (2i) de ce segment (2), rapportée à une longueur de boudin de tabac de 63 mm, est de 125 à 300 mm de colonne d'eau, de préférence de 140 à 160 mm de colonne d'eau.
  19. Cigarette filtre segmentée selon l'une des revendications 16 à 18, caractérisée en ce que l'efficacité de filtrage du noyau de filtre (3i) est de 70 à 100 %, de préférence de 90 à 100 %, tandis que l'efficacité de filtrage de la gaine de filtre (3a) est de 10 à 60 %, de préférence de 10 à 30 %, et en ce que le filtre a un taux de ventilation de 0 à 80 %.
EP95119328A 1994-12-12 1995-12-07 Cigarette à filtre segmentée Expired - Lifetime EP0716816B1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE4444157 1994-12-12
DE4444157A DE4444157C1 (de) 1994-12-12 1994-12-12 Segment-Filtercigarette

Publications (3)

Publication Number Publication Date
EP0716816A2 EP0716816A2 (fr) 1996-06-19
EP0716816A3 EP0716816A3 (fr) 1998-02-04
EP0716816B1 true EP0716816B1 (fr) 2001-11-07

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Family Applications (1)

Application Number Title Priority Date Filing Date
EP95119328A Expired - Lifetime EP0716816B1 (fr) 1994-12-12 1995-12-07 Cigarette à filtre segmentée

Country Status (6)

Country Link
US (1) US5730160A (fr)
EP (1) EP0716816B1 (fr)
AT (1) ATE208146T1 (fr)
AU (1) AU703834B2 (fr)
BR (1) BR9505393A (fr)
DE (2) DE4444157C1 (fr)

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* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE19722812C2 (de) * 1997-05-30 2003-02-13 Bat Cigarettenfab Gmbh Ultraleicht-Koaxialcigarette mit mehrteiligem Filter
DE19757712C1 (de) * 1997-12-23 1999-06-24 Bat Cigarettenfab Gmbh Koaxialcigarette mit Querstromsperre und Verfahren zur Herstellung einer Koaxialcigarette
GB2368771A (en) * 2000-11-09 2002-05-15 Patricia Ann Parker Cigarette
US20050066986A1 (en) * 2003-09-30 2005-03-31 Nestor Timothy Brian Smokable rod for a cigarette
US7503330B2 (en) * 2003-09-30 2009-03-17 R.J. Reynolds Tobacco Company Smokable rod for a cigarette
DE102005046581A1 (de) * 2005-09-28 2007-03-29 Hauni Maschinenbau Ag Einrichtung und Verfahren zum Messen von Eigenschaften von Multisegmentfiltern oder Zusammenstellungen von Filtersegmenten
US8573230B2 (en) * 2005-12-12 2013-11-05 Philip Morris Usa Inc. Smoking article with coaxial tobacco rod
GB0816933D0 (en) * 2008-09-16 2008-10-22 British American Tobacco Co Filter for a smoking article
GB0816937D0 (en) * 2008-09-16 2008-10-22 British American Tobacco Co Filter for a Smoking Article
US8997755B2 (en) * 2009-11-11 2015-04-07 R.J. Reynolds Tobacco Company Filter element comprising smoke-altering material
US11957163B2 (en) 2011-04-08 2024-04-16 R.J. Reynolds Tobacco Company Multi-segment filter element including smoke-altering flavorant
US10609955B2 (en) 2011-04-08 2020-04-07 R.J. Reynolds Tobacco Company Filtered cigarette comprising a tubular element in filter
US9220298B1 (en) 2014-09-13 2015-12-29 Viiital, LLC Technologies for smoking
MX2018007733A (es) * 2015-12-30 2018-08-15 Philip Morris Products Sa Articulo generador de aerosol que comprende un elemento de suministro de liquido.
GB201712380D0 (en) 2017-08-01 2017-09-13 British American Tobacco Investments Ltd A modular tobacco industry product

Family Cites Families (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4595024A (en) * 1984-08-31 1986-06-17 R. J. Reynolds Tobacco Company Segmented cigarette
US4730628A (en) * 1986-07-21 1988-03-15 R. J. Reynolds Tobacco Company Cigarette rods having segmented sections
US4759380A (en) * 1986-11-03 1988-07-26 R. J. Reynolds Tobacco Company Filter cigarette having segmented sections
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
DE4321069C2 (de) * 1993-06-24 1998-09-10 Bat Cigarettenfab Gmbh Koaxiale Filtercigarette

Also Published As

Publication number Publication date
AU703834B2 (en) 1999-04-01
DE4444157C1 (de) 1995-11-30
AU4034395A (en) 1996-06-20
DE59509806D1 (de) 2001-12-13
EP0716816A2 (fr) 1996-06-19
EP0716816A3 (fr) 1998-02-04
US5730160A (en) 1998-03-24
BR9505393A (pt) 1997-10-28
ATE208146T1 (de) 2001-11-15

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