EP0630587B1 - Coaxial filter cigarette - Google Patents

Coaxial filter cigarette Download PDF

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Publication number
EP0630587B1
EP0630587B1 EP94106843A EP94106843A EP0630587B1 EP 0630587 B1 EP0630587 B1 EP 0630587B1 EP 94106843 A EP94106843 A EP 94106843A EP 94106843 A EP94106843 A EP 94106843A EP 0630587 B1 EP0630587 B1 EP 0630587B1
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EP
European Patent Office
Prior art keywords
filter
coaxial
wrapper
smoke
filter element
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
EP94106843A
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German (de)
French (fr)
Other versions
EP0630587A1 (en
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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Publication of EP0630587A1 publication Critical patent/EP0630587A1/en
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    • 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
    • A24D3/041—Tobacco smoke filters characterised by their shape or structure with adjustable means for modifying the degree of filtration of the filter
    • 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 invention relates to a coaxial filter cigarette of the type specified in the preamble of claim 1.
  • Coaxial filter cigarettes are known from the patent specification DE 39 01 226 and from the patent specification DE 37 43 597.
  • the coaxial filter cigarette according to patent specification DE 39 01 226 is a cigarette with a strand part with an inner core made of a largely residue-free smoldering material, in particular tobacco material, a wrapper for the inner core, an outer jacket coaxially surrounding the inner core or its wrapper a tobacco and / or non-tobacco material, and a covering for the outer jacket, and with a filter part with a filter core, an air-impermeable covering for the filter core, a filter jacket and an envelope for the filter jacket.
  • a largely residue-free smoldering material in particular tobacco material
  • a wrapper for the inner core an outer jacket coaxially surrounding the inner core or its wrapper a tobacco and / or non-tobacco material
  • a covering for the outer jacket and with a filter part with a filter core, an air-impermeable covering for the filter core, a filter jacket and an envelope for the filter jacket.
  • This coaxial filter cigarette has a zone of the main heat source, which is located in the inner core of the strand part, and a zone in which the major part of the aerosol entering the smoker's mouth is generated and which is located in the outer jacket of the strand part; the filter part significantly reduces the combustion gases originating from the inner core of the strand part and the smoke particles originating from the inner core largely, while the aerosol generated in the outer jacket of the strand part is influenced only slightly or not at all.
  • a coaxial cigarette with a tobacco rod with an inner core is made of a largely residue-free smoldering material, in particular tobacco material.
  • This coaxial cigarette has 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, and a covering for the outer casing.
  • It has a ventilated coaxial filter with a filter core, the inner diameter of which corresponds approximately to the diameter of the inner core, and with a filter jacket; the filter core has an airtight covering; the filter jacket has an air-permeable covering; the coating of the inner core and the coating of the outer jacket are provided with glow salts; and the tensile resistance of the inner core is lower than the tensile resistance of the outer jacket.
  • the object of the present invention is to propose a coaxial cigarette in which other goals are sought.
  • a filter cigarette of the specified type is to be proposed, which enables further taste variations from a tobacco mixture.
  • Another significant advantage of the coaxial filter cigarette according to the present invention is the possible transfer of volatile aroma components from one of the two smoke streams separated over most of the strand part to the other smoke stream, without the substantial part of unwanted, non-volatile or non-volatile components being transferred becomes.
  • So z. B. are in the inner core of the strand part Burley Flavor Grades, whereas no Burley Grades can be contained in the periphery, but for example Flue Cured Grades and / or tobacco foil, especially extracted foil.
  • relatively high concentrations of volatile flavor and / or casing components which are not contained in the inner core, can be present in the outer jacket of the strand part. These volatile flavor and / or casing components can be partially mixed with the smoke from the inner core and thus cause special taste impressions.
  • the strand part has an inner core 102 made of a largely residue-free smoldering material, in particular tobacco material, with an air-impermeable or less porous sheath 103.
  • the air permeability of this sheath 103 is a maximum of 50 ISO units.
  • An outer jacket 104 made of a tobacco and / or non-tobacco material coaxially surrounds the inner core 102 or its casing 103.
  • the outer jacket 104 is surrounded by an air-permeable wrapper 105, generally a cigarette paper.
  • the inner core 102 and the outer jacket 104 consist of different tobacco, flavor and casing materials in all the embodiments to be described.
  • the coaxial filter element 111 has a filter core 112 with a preferably air-impermeable sheath 113.
  • the diameter of the filter core 112 corresponds approximately to the diameter of the inner core 102 of the strand part 101.
  • a filter jacket 114 surrounds it Filter core 112 or its sheath 113 coaxial.
  • the filter jacket 114 has an air-impermeable covering 115, which also serves to connect the strand part 101 and the filter element 111, and has a ventilation zone 116 for the filter jacket 114.
  • Wrapper 115 is commonly referred to as "tipping paper" or "interconnect sheets”. Below this is usually the filter wrapping paper or, briefly, the "filter wrapper". For the sake of simplicity, only the “covering” of the filter jacket 114 is referred to below.
  • the filter jacket 114 is connected to the strand part 101 by the air-impermeable covering 115 in such a way that between the filter-side end of the strand part 101 and the tobacco-side A cavity is formed at the end of the filter element 111, which forms a smoke mixing zone 120.
  • the filter core 112 and the filter jacket 114 have different filter efficiencies in all the embodiments yet to be explained, one of these two filter segments being highly effective, namely a retention rate of at least 70%, in particular at least 80%, preferably at least 90% and in an extreme case even 100 %, while the other of the two filter segments has a low effect, that is to say has a retention rate of less than 50%, preferably less than 40%.
  • the total empty volume of the strand part 101, ie inner core 102 and outer jacket 104, is at least 40% and at most 80%, while the empty volume of the two parts of the coaxial filter element 111 is at least 80%, preferably at least 90%. This information applies to all embodiments.
  • this coaxial filter cigarette 100 When this coaxial filter cigarette 100 is smoked, the different fumes from the inner core 102 and the outer jacket 104 of the strand part 101 are mixed in the smoke mixing zone 120.
  • a part of the smoke components of the stream that mainly flows into the highly effective segment 112, 114 of the filter element 111 is mixed into the smoke that flows into the less effective segment 112, 114 of the filter element 111.
  • the smoke mixture from the smoke mixing zone 120 then flows through the coaxial filter element 111, on the one hand it being locally filtered and on the other hand ventilation air is supplied to it through the ventilation zone 116 in the air-impermeable casing 115 for the filter jacket 114.
  • the ventilation zone 116 is formed by a line of punctiform ventilation openings that extend extend over the circumference of the coaxial filter element 111.
  • the coaxial strand part 101 is used for smoke and / or steam generation and has a length that corresponds to the usual dimensions of conventional cigarettes.
  • the axial length of the smoke mixing zone 120 is at least 0.2 mm, preferably about 0.5 mm; the axial length should not exceed about 1 mm.
  • the axially sectioned coaxial filter cigarette shown in FIG. 2 is designated by the general reference number 200.
  • the other reference numerals correspond to the reference numerals which were used in FIG. 1, with the exception of the first number 2, which indicates the second embodiment.
  • the embodiment shown in FIG. 2 has a strand part 201 and a coaxial filter element 211.
  • the inner core 202 of the strand part 201 consists of a largely residue-free smoldering material, in particular tobacco material, with an air-impermeable or less porous covering 203 for the inner core 202.
  • the air permeability of the covering 203 should not exceed 50 ISO units.
  • An outer jacket 204 coaxially surrounds the inner core 202 or its casing 203, consists of a tobacco and / or non-tobacco material and is surrounded by an air-permeable casing 205.
  • the coaxial filter element 211 has a filter core 212 with an air-impermeable covering 213.
  • a filter jacket 214 coaxially surrounds the filter core 212 or its covering 213.
  • the diameter of the filter jacket 214 corresponds to the diameter of the outer jacket 204 of the strand part 201.
  • the filter jacket 214 has an air-impermeable covering 215, which also serves to connect the strand part 201 and the filter element 211.
  • a ventilation zone 216 is provided in the airtight envelope 215 for the filter jacket 214.
  • the sheath 203 of the inner core 202 of the strand part 201 has a perforation zone at its filter-side end. This perforation zone creates a smoke mixing zone 220 in this transition area, in which the smoke from the outer jacket 204 and the inner core 202 of the strand part 201 can mix.
  • the smoke mixing zone 220 can be created by mechanical perforation or by laser perforation of the casing 203.
  • the smoke from the inner core 202 largely flows directly into the filter core 212 of the coaxial filter element 216; in the same way a part, usually the majority of the smoke from the outer jacket 204 flows directly into the filter jacket 214.
  • a part of the components from the smoke of the outer jacket 204 namely in particular the volatile components, flow through the perforation zone in the casing 203 of the Inner core 202 of the strand part 201 in the inner core 202 and mix when smoking the cigarette in the smoke mixing zone 220 before they flow into the coaxial filter element 211, where they are filtered in a targeted manner.
  • Ventilation air also penetrates through the ventilation zone 216 into the filter and mixes in the filter jacket 214 with the smoke mixture from the smoke mixing zone 220.
  • the ventilation zone 216 is formed from a line of punctiform ventilation openings which extend through the circumference of the coaxial filter element 211 through the otherwise extend airtight envelope 215.
  • the axially sectioned coaxial filter cigarette shown in FIG. 3 has the general reference number 400.
  • the other reference numbers otherwise correspond to the reference numbers from FIG. 1 including the smoke mixing zone 420, only the first number "1" being replaced by a "4", so that the individual parts should not be explained again.
  • the strand part 401 can be shifted within given markings (not shown) on the cigarette paper in the protruding edge of the wrapper 415, as a result of which the gap between the filter-side end of the strand part 401 and the tobacco-side end of the coaxial filter element 411 and thus the smoke mixing zone 420 is enlarged or reduced accordingly.
  • a smoke admixture ratio desired by the smoker can be set as desired by varying the axial length of the smoke mixing zone 420 and thus the “mixing section”, that is to say the section over which the smoke streams from the two segments of the strand part 401 can mix .
  • FIG. 4 shows an axial cross section through a coaxial filter cigarette, which is generally indicated by the reference number 500.
  • the reference numerals correspond again to the reference numerals of the preceding figures, with the exception of the first digit.
  • the cigarette according to this fourth embodiment consists of a coaxial strand part 501 and a coaxial filter element 511.
  • the strand part has an inner core 502 made of a largely residue-free smoldering material, in particular tobacco material, with an air-impermeable or less porous covering 503 for the inner core.
  • the air permeability of the envelope 503 is a maximum of 50 ISO units.
  • An outer jacket 504 made of a tobacco and / or non-tobacco material coaxially surrounds the inner core 502 or its casing 503.
  • the outer jacket 504 is surrounded by an air-permeable sheath 505.
  • the coaxial filter element 511 has a filter core 512 with an air-impermeable covering 513.
  • a filter jacket 514 coaxially surrounds the filter core 512 or its casing 513.
  • the diameter of the filter jacket 514 corresponds to the diameter of the outer jacket 504 of the strand part 501
  • Filter jacket 514 has an air-impermeable covering 515, which also serves to connect the strand part 501 and the coaxial filter element 511.
  • a ventilation zone 516 is located in the air-impermeable casing 515 for the filter jacket 514.
  • the ventilation and thus the smoke mixture can be set in two ways:
  • a rotatable ring 507 which has perforations in sections in the radial direction, surrounds the coaxial filter element 511 and the strand part 501.
  • the ventilation zone 506 of the strand part 501 likewise only has perforations in sections in the radial direction.
  • a ring 507 which can be pushed in the axial direction over the ventilation zone of the strand part 501, surrounds the outer jacket 515 of the filter element 511.
  • the ventilation zone 506 of the strand part 501 can be partially or completely covered, as a result of which the ventilation ratio can be adjusted by the smoker .
  • a smoke mixing zone 520 is located in the tobacco-side part of the filter core 512, the fumes of the outer shell 504 and the inner core 502 of the strand part 501 in the filter core 512 being mixed here.
  • the two smoke streams coming from the branch part 501 can be influenced and also adjusted by varying the ventilation, as explained, so that the smoke from one branch segment is admixed to the smoke from the other segment depending on the set degree of ventilation.
  • the ratio of the two smoke streams is "detuned” and the smoke balance changes, which can cause certain taste nuances.

Abstract

The coaxial filter cigarette (100) according to the invention consists of a coaxial strand part (101) and a coaxial filter element (111). The strand part has an inner core (102) of a material which smoulders largely without residue, especially tobacco material, which is surrounded by a wrapper (103) which, in turn, is surrounded by an outer shell (104) of a tobacco and/or non-tobacco material. A wrapper (105) of an air-permeable material wraps the outer shell. The coaxial filter element (111) possesses a filter core (112) with an air-impermeable wrapper (113). The filter core or its wrapper coaxially surrounds a filter shell (114) whose diameter corresponds to the diameter of the outer shell. An air-impermeable wrapper (115), which also serves to connect the strand part and the filter element, surrounds the filter shell. A ventilation zone (116) is incorporated into the air-impermeable wrapper for the filter shell. A smoke mixing zone (120) for changing, in a defined manner, the smoke mixture leaving the strand part before it flows into the filter element is designed in the transition region between the strand part and the filter element. <IMAGE>

Description

Die Erfindung betrifft eine koaxiale Filtercigarette der im Oberbegriff des Anspruchs 1 angegebenen Gattung.The invention relates to a coaxial filter cigarette of the type specified in the preamble of claim 1.

Koaxiale Filtercigaretten sind aus der Patentschrift DE 39 01 226 sowie aus der Patentschrift DE 37 43 597 bekannt.Coaxial filter cigarettes are known from the patent specification DE 39 01 226 and from the patent specification DE 37 43 597.

Bei der koaxialen Filtercigarette nach der Patentschrift DE 39 01 226 handelt es sich um eine Cigarette mit einem Strangteil mit einem Innenkern aus einem weitgehend rückstandsfrei verglimmenden Material, insbesondere Tabakmaterial, einer Umhüllung für den Innenkern, einem den Innenkern bzw. seine Umhüllung koaxial umgebenden Außenmantel aus einem Tabak- und/oder Nicht-Tabakmaterial, und einer Umhüllung für den Außenmantel, und mit einem Filterteil mit einem Filterkern, einer luftundurchlässigen Umhüllung für den Filterkern, einem Filtermantel und einer Umhüllung für den Filtermantel. Diese koaxiale Filtercigarette weist eine Zone der hauptsächlichen Wärmequelle, die sich im Innenkern des Strangteils befindet, sowie eine Zone auf, in der der wesentliche Anteil des in den Mund des Rauchers gelangenden Aerosols erzeugt wird und die sich im Außenmantel des Strangteils befindet; der Filterteil reduziert die aus dem Innenkern des Strangteils stammenden Verbrennungsgase deutlich und die aus dem Innenkern stammenden Rauchpartikel weitgehend, während das im Außenmantel des Strangteils erzeugte Aerosol nur wenig oder gar nicht beeinflußt wird.The coaxial filter cigarette according to patent specification DE 39 01 226 is a cigarette with a strand part with an inner core made of a largely residue-free smoldering material, in particular tobacco material, a wrapper for the inner core, an outer jacket coaxially surrounding the inner core or its wrapper a tobacco and / or non-tobacco material, and a covering for the outer jacket, and with a filter part with a filter core, an air-impermeable covering for the filter core, a filter jacket and an envelope for the filter jacket. This coaxial filter cigarette has a zone of the main heat source, which is located in the inner core of the strand part, and a zone in which the major part of the aerosol entering the smoker's mouth is generated and which is located in the outer jacket of the strand part; the filter part significantly reduces the combustion gases originating from the inner core of the strand part and the smoke particles originating from the inner core largely, while the aerosol generated in the outer jacket of the strand part is influenced only slightly or not at all.

Aus der Patentschrift DE 37 43 597 geht eine Koaxialcigarette mit einem Tabakstrang mit einem Innenkern aus einem weitgehend rückstandsfrei verglimmenden Material, insbesondere Tabakmaterial, hervor. Diese Koaxialcigarette hat eine Umhüllung für den Innenkern, einen den Innenkern bzw. seine Umhüllung koaxial umgebenden Außenmantel aus einem Tabak- und/oder Nicht-Tabakmaterial und eine Umhüllung für den Außenmantel. Sie weist einen ventilierten Koaxialfilter mit einem Filterkern, dessen Innendurchmesser etwa dem Durchmesser des Innenkerns entspricht, und mit einem Filtermantel auf; der Filterkern hat eine luftundurchlässige Umhüllung; der Filtermantel hat eine luftdurchlässige Umhüllung; die Umhüllung des Innenkerns und die Umhüllung des Außenmantels sind mit Glimmsalzen versehen; und der Zugwiderstand des Innenkerns ist niedriger als der Zugwiderstand des Außenmantels.From the patent DE 37 43 597 a coaxial cigarette with a tobacco rod with an inner core is made of a largely residue-free smoldering material, in particular tobacco material. This coaxial cigarette has 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, and a covering for the outer casing. It has a ventilated coaxial filter with a filter core, the inner diameter of which corresponds approximately to the diameter of the inner core, and with a filter jacket; the filter core has an airtight covering; the filter jacket has an air-permeable covering; the coating of the inner core and the coating of the outer jacket are provided with glow salts; and the tensile resistance of the inner core is lower than the tensile resistance of the outer jacket.

Der Stand der Technik, wie er z. B. aus der deutschen Patentschrift DE 39 01 226 hervorgeht, hat die Zielrichtung, daß keine wesentliche Vermischung der Räuche aus dem Innenkern und dem Außenmantel des Strangteils stattfindet sowie keine Realisierung von unterschiedlichen Mischungsgraden der beiden Rauchkomponenten aus dem Tabakstrang möglich ist. Ein weiterer Nachteil des Gegenstandes der oben genannten Patentschrift besteht darin, daß keine vom Raucher einstellbare Variation des Rauch-Mischungsgrades betreffend des Geschmackscharakters oder des Werteniveaus möglich ist.The prior art, such as. B. from the German patent DE 39 01 226, the aim is that there is no substantial mixing of the smoke from the inner core and the outer jacket of the strand part and no realization of different degrees of mixing of the two smoke components from the tobacco rod is possible. Another disadvantage of the subject of the above patent is that none can be set by the smoker Varying the degree of smoke mixing with regard to the taste character or the value level is possible.

Ähnliche Zielsetzungen wie die Cigarette nach der Patentschrift DE 3 901 226 hat die Cigarette nach der Patentschrift DE 37 43 597.The cigarette according to patent specification DE 37 43 597 has similar objectives as the cigarette according to patent specification DE 3 901 226.

Die Aufgabe der vorliegenden Erfindung ist es, eine Koaxialcigarette vorzuschlagen, bei der andere Ziele angestrebt werden. Insbesondere soll eine Filtercigarette der angegebenen Gattung vorgeschlagen werden, die weitere Geschmacksvariationen aus einer Tabakmischung ermöglicht.The object of the present invention is to propose a coaxial cigarette in which other goals are sought. In particular, a filter cigarette of the specified type is to be proposed, which enables further taste variations from a tobacco mixture.

Dies wird erfindungsgemäß durch die im kennzeichnenden Teil des Anspruchs 1 angegebenen Merkmale erreicht. Zweckmäßige Ausführungsformen gehen aus den Unteransprüchen hervor.This is achieved according to the invention by the features specified in the characterizing part of claim 1. Appropriate embodiments emerge from the subclaims.

Ein wesentlicher Vorteil der erfindungsgemäßen Koaxialcigarette liegt darin, daß mit ihr die Realisierung unterschiedlicher Zumischungsgrade von zwei unterschiedlichen Räuchen aus dem Strangteil der Cigarette möglich wird. Die Unterschiede in den Räuchen der Strangteile rühren von den unterschiedlichen Blend-, Flavour- und Casing-Komponenten im Außenmantel des Strangteils und im Innenkern des Strangteils her. Bei einer Koaxialcigarette gemäß der vorliegenden Erfindung entsteht ein Rauchgemisch, das deutlich unterschiedlich von den Rauchströmen von Koaxialcigaretten nach dem Stand der Technik ist. Der Rauchmischungsgrad kann hierbei durch technisch einfach realisierbare Designvariationen bei Vorhandensein einer Rauchmischzone im breiten Umfang variiert werden. Als Beispiele für technisch einfach realisierbare Designvariationen zur Veränderung des Rauchmischungsgrades können die folgenden aufgeführt werden:

  • Erzeugung von Perforationen (elektrostatisch oder mittels Laser) am filterseitigen Ende des Strangteils,
  • Einsatz eines Cigarettenpapiers mit anderer Luftdurchlässigkeit,
  • relativ geringfügige Variation der spezifischen Tabakstrangzugwiderstände des Kerns und des Mantels, derart, daß das Verhältnis der spezifischen Tabakstrangzugwiderstände deutlich geändert wird, durch Tabakvorbereitungs-Maßnahmen, und/oder durch Änderungen der Packungsdichte.
An essential advantage of the coaxial cigarette according to the invention is that it enables different degrees of admixture of two different smokes to be produced from the strand part of the cigarette. The differences in the smoke of the strand parts result from the different blend, flavor and casing components in the outer jacket of the strand part and in the inner core of the strand part. In the case of a coaxial cigarette according to the present invention, a smoke mixture is produced which is significantly different from the smoke flows from coaxial cigarettes according to the prior art. The degree of smoke mixing can be varied to a large extent by design variations that are technically easy to implement if a smoke mixing zone is present. The following can be listed as examples of technically easy to implement design variations for changing the smoke mixture level:
  • Creation of perforations (electrostatically or by means of laser) at the filter-side end of the strand part,
  • Use of cigarette paper with a different air permeability,
  • relatively slight variation of the specific tobacco rod tensile resistances of the core and the casing, such that the ratio of the specific tobacco rod tensile resistances is significantly changed by tobacco preparation measures and / or by changes in the packing density.

Spezielle Versionen, die später bei der Beschreibung der Figuren eingehender erklärt werden, ermöglichen vom Raucher einstellbare Variationen des Rauch-Mischungsgrades und damit eine Auswahlmöglichkeit

  • a) des Geschmackscharakters unterschiedlicher Mischungen und/oder
  • b) des Werteniveaus.
Special versions, which will be explained in more detail later in the description of the figures, make it possible for the smoker to set variations in the degree of smoke mixing and thus a selection option
  • a) the taste character of different mixtures and / or
  • b) the level of values.

Ein weiterer wesentlicher Vorteil der koaxialen Filtercigarette gemäß der vorliegenden Erfindung ist die mögliche Übertragung von flüchtigen Aromakomponenten von einem der beiden über den größten Teil des Strangteiles getrennten Rauchströme auf den anderen Rauchstrom, ohne daß der wesentliche Teil unerwünschter, nicht- bzw. schwerflüchtiger Komponenten mit übertragen wird. So können sich z. B. im Innenkern des Strangteils Burley Flavour Grades befinden, wohingegen in der Peripherie keinerlei Burley Grades enthalten sein können, sondern zum Beispiel Flue Cured Grades und/oder Tabakfolie, speziell auch extrahierte Folie. Im Außenmantel des Strangteils können andererseits relativ hohe Konzentrationen flüchtiger Flavour- und/oder Casingkomponenten, die im Innenkern nicht enthalten sind, vorhanden sein. Diese flüchtigen Flavour- und/oder Casingkomponenten können partiell zum Rauch aus dem Innenkern gemischt werden und dadurch spezielle Geschmackseindrücke hervorrufen.Another significant advantage of the coaxial filter cigarette according to the present invention is the possible transfer of volatile aroma components from one of the two smoke streams separated over most of the strand part to the other smoke stream, without the substantial part of unwanted, non-volatile or non-volatile components being transferred becomes. So z. B. are in the inner core of the strand part Burley Flavor Grades, whereas no Burley Grades can be contained in the periphery, but for example Flue Cured Grades and / or tobacco foil, especially extracted foil. On the other hand, relatively high concentrations of volatile flavor and / or casing components, which are not contained in the inner core, can be present in the outer jacket of the strand part. These volatile flavor and / or casing components can be partially mixed with the smoke from the inner core and thus cause special taste impressions.

Durch teilweise Abdeckung einer Perforationszone im filterseitigen Teil der Umhüllung des Außenmantels des Strangteils mittels eines drehbaren oder verschiebbaren Rings, der ebenfalls Ventilationszonen aufweisen kann, oder durch Variation der Länge der Rauchmischzone, besteht für den Raucher eine weitere Möglichkeit, den Geschmackseindruck seinen Wünschen anzupassen.By partially covering a perforation zone in the filter-side part of the envelope of the outer casing of the strand part by means of a rotatable or displaceable ring, which can also have ventilation zones, or by varying the length of the smoke mixing zone, there is another possibility for the smoker to adapt the taste impression to his wishes.

Die Erfindung wird im folgenden anhand von Ausführungsbeispielen unter Bezugnahme auf die beiliegenden schematischen Zeichnungen näher erläutert. Es zeigen:

Fig. 1
einen axialen Schnitt durch eine koaxiale Filtercigarette mit einer Mischkammer zwischen dem Strangteil und dem Filterelement,
Fig. 2
einen axialen Schnitt durch eine koaxiale Filtercigarette mit einer Rauchmischzone am tabakseitigen Ende des Strangteils, wobei die Rauchmischung durch eine Perforationszone in der Umhüllung für den Innenkern am filterseitigen Ende des Strangteils erzielt wird,
Fig. 3
einen axialen Schnitt durch eine koaxiale Filtercigarette entsprechend Fig. 1, wobei jedoch der Strangteil innerhalb gegebener Markierungen auf der Umhüllung des Außenmantels in axialer Richtung verschoben werden kann, und
Fig. 4
einen axialen Schnitt durch eine koaxiale Filtercigarette, deren Filter- und/oder Strangteil mit einem drehbaren oder schiebbaren Ring, der abschnittsweise perforiert sein kann, versehen ist, so daß durch Verdrehen oder Verschieben des Rings das Rauchmuster der Cigarette vom Raucher eingestellt werden kann.
The invention is explained in more detail below using exemplary embodiments with reference to the accompanying schematic drawings. Show it:
Fig. 1
an axial section through a coaxial filter cigarette with a mixing chamber between the strand part and the filter element,
Fig. 2
an axial section through a coaxial filter cigarette with a smoke mixing zone at the tobacco end of the strand part, the smoke mixture being achieved through a perforation zone in the casing for the inner core at the filter end of the strand part,
Fig. 3
an axial section through a coaxial filter cigarette according to FIG. 1, but the strand part can be moved in the axial direction within given markings on the envelope of the outer casing, and
Fig. 4
an axial section through a coaxial filter cigarette, the filter and / or strand part is provided with a rotatable or slidable ring, which may be perforated in sections, so that the smoking pattern of the cigarette can be set by the smoker by rotating or moving the ring.

Fig. 1 zeigt eine allgemein durch das Bezugszeichen 100 angedeutete koaxiale Filtercigarette mit einem koaxialen Strangteil 101 und einem koaxialen Filterelement 111. Der Strangteil hat einen Innenkern 102 aus einem weitgehend rückstandsfrei verglimmenden Material, insbesondere Tabakmaterial, mit einer luftundurchlässigen oder wenig porösen Umhüllung 103. Die Luftdurchlässigkeit dieser Umhüllung 103 beträgt maximal 50 ISO-Einheiten. Ein Außenmantel 104 aus einem Tabak- und/oder Nichttabak-Material umgibt den Innenkern 102 bzw. seine Umhüllung 103 koaxial. Der Außenmantel 104 ist umgeben mit einer luftdurchlässigen Umhüllung 105, im allgemeinen ist dies ein Cigarettenpapier.1 shows one indicated generally by reference number 100 coaxial filter cigarette with a coaxial strand part 101 and a coaxial filter element 111. The strand part has an inner core 102 made of a largely residue-free smoldering material, in particular tobacco material, with an air-impermeable or less porous sheath 103. The air permeability of this sheath 103 is a maximum of 50 ISO units. An outer jacket 104 made of a tobacco and / or non-tobacco material coaxially surrounds the inner core 102 or its casing 103. The outer jacket 104 is surrounded by an air-permeable wrapper 105, generally a cigarette paper.

Der Innenkern 102 und der Außenmantel 104 bestehen bei allen, noch zu beschreibenden Ausführungsformen aus geschmacklich unterschiedlichen Tabak-, Flavour- und Casing-Materialien.The inner core 102 and the outer jacket 104 consist of different tobacco, flavor and casing materials in all the embodiments to be described.

Das koaxiale Filterelement 111 hat einen Filterkern 112 mit einer vorzugsweise luftundurchlässigen Umhüllung 113. Der Durchmesser des Filterkerns 112 entspricht in etwa dem Durchmesser des Innenkerns 102 des Strangteils 101. Ein Filtermantel 114, dessen Durchmesser dem Durchmesser des Außenmantels 104 des Strangteils 101 entspricht, umgibt den Filterkern 112 bzw. seine Umhüllung 113 koaxial. Der Filtermantel 114 hat eine luftundurchlässige Umhüllung 115, die auch zur Verbindung von Strangteil 101 und Filterelement 111 dient, und weist eine Ventilationszone 116 für den Filtermantel 114 auf. Üblicherweise wird die Umhüllung 115 als "Belagpapier" oder "Verbindungsblättchen" bezeichnet. Darunter befindet sich normalerweise das Filterumhüllungspapier oder auch, kurz bezeichnet, die "Filterumhüllung". Der Einfachheit halber wird im folgenden nur noch von der "Umhüllung" des Filtermantels 114 gesprochen.The coaxial filter element 111 has a filter core 112 with a preferably air-impermeable sheath 113. The diameter of the filter core 112 corresponds approximately to the diameter of the inner core 102 of the strand part 101. A filter jacket 114, the diameter of which corresponds to the diameter of the outer jacket 104 of the strand part 101, surrounds it Filter core 112 or its sheath 113 coaxial. The filter jacket 114 has an air-impermeable covering 115, which also serves to connect the strand part 101 and the filter element 111, and has a ventilation zone 116 for the filter jacket 114. Wrapper 115 is commonly referred to as "tipping paper" or "interconnect sheets". Below this is usually the filter wrapping paper or, briefly, the "filter wrapper". For the sake of simplicity, only the “covering” of the filter jacket 114 is referred to below.

Der Filtermantel 114 ist durch die luftundurchlässige Umhüllung 115 so mit dem Strangteil 101 verbunden, daß zwischen dem filterseitigen Ende des Strangteils 101 und dem tabakseitigen Ende des Filterelements 111 ein Hohlraum entsteht, der eine Rauchmischzone 120 bildet.The filter jacket 114 is connected to the strand part 101 by the air-impermeable covering 115 in such a way that between the filter-side end of the strand part 101 and the tobacco-side A cavity is formed at the end of the filter element 111, which forms a smoke mixing zone 120.

Der Filterkern 112 und der Filtermantel 114 haben bei allen noch zu erläuternden Ausführungsformen unterschiedliche Filterwirksamkeiten, wobei jeweils eins dieser beiden Filtersegmente hochwirksam ist, nämlich einen Retentionsgrad von mindestens 70 %, insbesondere von mindestens 80 % , bevorzugt von mindestens 90% und im Extremfall sogar 100 % hat, während das andere der beiden Filtersegmente niedrigwirksam ist, also einen Retentionsgrad von weniger als 50 %, vorzugsweise von weniger als 40 % hat. Das Leervolumen des Strangteils 101 beträgt insgesamt, also Innenkern 102 und Außenmantel 104, mindestens 40 % und maximal 80 %, während das Leervolumen der beiden Teile des koaxilen Filterelements 111 mindestens 80 %, vorzugsweise mindestens 90 % beträgt. Diese Angaben gelten für alle Ausführungsformen.The filter core 112 and the filter jacket 114 have different filter efficiencies in all the embodiments yet to be explained, one of these two filter segments being highly effective, namely a retention rate of at least 70%, in particular at least 80%, preferably at least 90% and in an extreme case even 100 %, while the other of the two filter segments has a low effect, that is to say has a retention rate of less than 50%, preferably less than 40%. The total empty volume of the strand part 101, ie inner core 102 and outer jacket 104, is at least 40% and at most 80%, while the empty volume of the two parts of the coaxial filter element 111 is at least 80%, preferably at least 90%. This information applies to all embodiments.

Beim Rauchen dieser koaxialen Filtercigarette 100 werden die unterschiedlichen Räuche aus dem Innenkern 102 und dem Außenmantel 104 des Strangteils 101 in der Rauchmischzone 120 vermischt. Hierbei wird von dem Strom, der hauptsächlich in das hochwirksame Segment 112, 114 des Filterelementes 111 strömt, ein Teil der Rauchkomponenten zu dem Rauch zugemischt, der in das weniger wirksame Segment 112, 114 des Filterelementes 111 strömt. Durch Verwendung von unterschiedlichen Blend-, Flavour- und Casing-Komponenten im Außenmantel 104 und im Innenkern 102 des Strangteils 111 können unterschiedliche Mischungsgrade der beiden Räuche realisiert werden. Das Rauchgemisch aus der Rauchmischzone 120 durchströmt danach das koaxiale Filterelement 111, wobei es einerseits gezielt lokal gefiltert und ihm andererseits hier noch Ventilationsluft durch die Ventilationszone 116 in der luftundurchlässigen Umhüllung 115 für den Filtermantel 114 zugeführt wird. Die Ventilationszone 116 wird durch eine Linie von punktförmigen Ventilationsöffnungen gebildet, die sich über dem Umfang des koaxialen Filterelements 111 erstrecken. Der koaxiale Strangteil 101 dient zur Rauch- und/oder Dampferzeugung und hat eine Länge, die den üblichen Abmessungen konventioneller Cigaretten entspricht.When this coaxial filter cigarette 100 is smoked, the different fumes from the inner core 102 and the outer jacket 104 of the strand part 101 are mixed in the smoke mixing zone 120. Here, a part of the smoke components of the stream that mainly flows into the highly effective segment 112, 114 of the filter element 111 is mixed into the smoke that flows into the less effective segment 112, 114 of the filter element 111. By using different blend, flavor and casing components in the outer jacket 104 and in the inner core 102 of the strand part 111, different degrees of mixing of the two fumes can be achieved. The smoke mixture from the smoke mixing zone 120 then flows through the coaxial filter element 111, on the one hand it being locally filtered and on the other hand ventilation air is supplied to it through the ventilation zone 116 in the air-impermeable casing 115 for the filter jacket 114. The ventilation zone 116 is formed by a line of punctiform ventilation openings that extend extend over the circumference of the coaxial filter element 111. The coaxial strand part 101 is used for smoke and / or steam generation and has a length that corresponds to the usual dimensions of conventional cigarettes.

Die axiale Länge der Rauchmischzone 120 beträgt mindestens 0,2 mm, bevorzugt etwa 0,5 mm; die axiale Länge sollte etwa 1 mm nicht übersteigen.The axial length of the smoke mixing zone 120 is at least 0.2 mm, preferably about 0.5 mm; the axial length should not exceed about 1 mm.

Die in Fig. 2 dargestellte, axial geschnittene koaxiale Filtercigarette ist mit dem allgemeinen Bezugszeichen 200 bezeichnet. Die anderen Bezugszeichen entsprechen mit Ausnahme der ersten Ziffer 2, die auf die zweite Ausführungsform hindeutet, den Bezugszeichen, die in der Fig. 1 verwendet wurden. Die Ausführungsform, die in der Fig. 2 dargestellt wird, weist einen Strangteil 201 sowie ein koaxiales Filterelement 211 auf. Der Innenkern 202 des Strangteils 201 besteht aus einem weitgehend rückstandsfrei verglimmenden Material, insbesondere Tabakmaterial, mit einer luftundurchlässigen oder wenig porösen Umhüllung 203 für den Innenkern 202. Die Luftdurchlässigkeit der Umhüllung 203 sollte 50 ISO-Einheiten nicht übersteigen. Ein Außenmantel 204 umgibt den Innenkern 202 bzw. seine Umhüllung 203 koaxial, besteht aus einem Tabak- und/oder Nichttabak-Material und ist von einer luftdurchlässigen Umhüllung 205 umgeben.The axially sectioned coaxial filter cigarette shown in FIG. 2 is designated by the general reference number 200. The other reference numerals correspond to the reference numerals which were used in FIG. 1, with the exception of the first number 2, which indicates the second embodiment. The embodiment shown in FIG. 2 has a strand part 201 and a coaxial filter element 211. The inner core 202 of the strand part 201 consists of a largely residue-free smoldering material, in particular tobacco material, with an air-impermeable or less porous covering 203 for the inner core 202. The air permeability of the covering 203 should not exceed 50 ISO units. An outer jacket 204 coaxially surrounds the inner core 202 or its casing 203, consists of a tobacco and / or non-tobacco material and is surrounded by an air-permeable casing 205.

Das koaxiale Filterelement 211 hat einen Filterkern 212 mit einer luftundurchlässigen Umhüllung 213. Ein Filtermantel 214 umgibt den Filterkern 212 bzw. seine Umhüllung 213 koaxial. Der Durchmesser des Filtermantels 214 entspricht dem Durchmesser des Außenmantels 204 des Strangteils 201. Der Filtermantel 214 weist eine luftundurchlässige Umhüllung 215 auf, die auch zur Verbindung von Strangteil 201 und Filterelement 211 dient. Eine Ventilationszone 216 ist in der luftundurchlässigen Umhüllung 215 für den Filtermantel 214 vorgesehen.The coaxial filter element 211 has a filter core 212 with an air-impermeable covering 213. A filter jacket 214 coaxially surrounds the filter core 212 or its covering 213. The diameter of the filter jacket 214 corresponds to the diameter of the outer jacket 204 of the strand part 201. The filter jacket 214 has an air-impermeable covering 215, which also serves to connect the strand part 201 and the filter element 211. A ventilation zone 216 is provided in the airtight envelope 215 for the filter jacket 214.

Die Umhüllung 203 des Innenkerns 202 des Strangteils 201 weist an ihrem filterseitigen Ende eine Perforationszone auf. Durch diese Perforationszone entsteht in diesem Übergangsbereich eine Rauchmischzone 220, in der sich die Räuche aus dem Außenmantel 204 und dem Innenkern 202 des Strangteils 201 vermischen können. Die Rauchmischzone 220 kann durch mechanische Perforation oder durch Laserperforation der Umhüllung 203 geschaffen werden.The sheath 203 of the inner core 202 of the strand part 201 has a perforation zone at its filter-side end. This perforation zone creates a smoke mixing zone 220 in this transition area, in which the smoke from the outer jacket 204 and the inner core 202 of the strand part 201 can mix. The smoke mixing zone 220 can be created by mechanical perforation or by laser perforation of the casing 203.

Der Rauch aus dem Innenkern 202 strömt weitgehend direkt in den Filterkern 212 des koaxialen Filterelementes 216; in gleicher Weise strömt ein Teil, in der Regel der überwiegende Teil des Rauches aus dem Außenmantel 204 direkt in den Filtermantel 214. Ein Teil der Komponenten aus dem Rauch des Außenmantels 204, nämlich insbesondere die flüchtigen Komponenten strömen durch die Perforationszone in der Umhüllung 203 des Innenkerns 202 des Strangteils 201 in den Innenkern 202 und vermischen sich beim Rauchen der Cigarette in der Rauchmischzone 220, bevor sie in das koaxiale Filterlement 211 strömen, wo sie gezielt gefiltert werden.The smoke from the inner core 202 largely flows directly into the filter core 212 of the coaxial filter element 216; in the same way a part, usually the majority of the smoke from the outer jacket 204 flows directly into the filter jacket 214. A part of the components from the smoke of the outer jacket 204, namely in particular the volatile components, flow through the perforation zone in the casing 203 of the Inner core 202 of the strand part 201 in the inner core 202 and mix when smoking the cigarette in the smoke mixing zone 220 before they flow into the coaxial filter element 211, where they are filtered in a targeted manner.

Durch die Ventilationszone 216 dringt außerdem noch Ventilationsluft in den Filter ein und vermischt sich in dem Filtermantel 214 mit dem Rauchgemisch aus der Rauchmischzone 220. Die Ventilationszone 216 wird aus einer Linie von punktförmigen Ventilationsöffnugnen gebildet, die sich über den Umfang des koaxialen Filterelements 211 durch die ansonsten luftundurchlässige Umhüllung 215 erstrecken.Ventilation air also penetrates through the ventilation zone 216 into the filter and mixes in the filter jacket 214 with the smoke mixture from the smoke mixing zone 220. The ventilation zone 216 is formed from a line of punctiform ventilation openings which extend through the circumference of the coaxial filter element 211 through the otherwise extend airtight envelope 215.

Die in Fig. 3 dargestellte, axial geschnittene koaxiale Filtercigarette hat das allgemeine Bezugszeichen 400. Die weiteren Bezugszeichen entsprechen im übrigen den Bezugszeichen aus Figur 1 einschließlich der Rauchmischzone 420, wobei nur jeweils die erste Ziffer "1" durch eine "4" ersetzt wird, so daß die Einzelteile nicht nochmals erläutert werden sollen.The axially sectioned coaxial filter cigarette shown in FIG. 3 has the general reference number 400. The other reference numbers otherwise correspond to the reference numbers from FIG. 1 including the smoke mixing zone 420, only the first number "1" being replaced by a "4", so that the individual parts should not be explained again.

Mit dieser dritten Ausführungsform kann der Strangteil 401 innerhalb gegebener Markierungen (nicht dargestellt) auf dem Cigarettenpapier in dem überstehenden Rand der Umhüllung 415 verschoben werden, wodurch die Lücke zwischen dem filterseitigen Ende des Strangteils 401 und dem tabakseitigen Ende des koaxialen Filterelements 411 und damit die Rauchmischzone 420 entsprechend vergrößert bzw. verkleinert wird. Dadurch kann ein vom Raucher erwünschtes Rauch-Zumischungsverhältnis nach Wunsch eingestellt werden, indem die axiale Länge der Rauchmischzone 420 und damit die "Mischstrecke", also die Strecke, auf der sich die Rauchströme von den beiden Segmenten des Strangteils 401 mischen können, entsprechend variiert wird.With this third embodiment, the strand part 401 can be shifted within given markings (not shown) on the cigarette paper in the protruding edge of the wrapper 415, as a result of which the gap between the filter-side end of the strand part 401 and the tobacco-side end of the coaxial filter element 411 and thus the smoke mixing zone 420 is enlarged or reduced accordingly. In this way, a smoke admixture ratio desired by the smoker can be set as desired by varying the axial length of the smoke mixing zone 420 and thus the “mixing section”, that is to say the section over which the smoke streams from the two segments of the strand part 401 can mix .

Die Fig. 4 zeigt einen axialen Querschnitt durch eine koaxiale Filtercigarette, die allgemein mit dem Bezugszeichen 500 angedeutet ist. Die Bezugszeichen entsprechen wieder sinngemäß bis auf die erste Ziffer den Bezugszeichen der vorangehenden Figuren. Die Cigarette nach dieser vierten Ausführungsform besteht aus einem koaxialen Strangteil 501 und einem koaxialen Filterelement 511. Der Strangteil hat einen Innenkern 502 aus einem weitgehend rückstandsfrei verglimmenden Material, insbesondere Tabakmaterial, mit einer luftundurchlässigen oder wenig porösen Umhüllung 503 für den Innenkern. Die Luftdurchlässigkeit der Umhüllung 503 beträgt maximal 50 ISO-Einheiten.FIG. 4 shows an axial cross section through a coaxial filter cigarette, which is generally indicated by the reference number 500. The reference numerals correspond again to the reference numerals of the preceding figures, with the exception of the first digit. The cigarette according to this fourth embodiment consists of a coaxial strand part 501 and a coaxial filter element 511. The strand part has an inner core 502 made of a largely residue-free smoldering material, in particular tobacco material, with an air-impermeable or less porous covering 503 for the inner core. The air permeability of the envelope 503 is a maximum of 50 ISO units.

Ein Außenmantel 504 aus einem Tabak- und/oder Nichttabak-Material umgibt den Innenkern 502 bzw. seine Umhüllung 503 koaxial. Der Außenmantel 504 ist von einer luftdurchlässigen Umhüllung 505 umgeben.An outer jacket 504 made of a tobacco and / or non-tobacco material coaxially surrounds the inner core 502 or its casing 503. The outer jacket 504 is surrounded by an air-permeable sheath 505.

Das koaxiale Filterelement 511 weist einen Filterkern 512 mit einer luftundurchlässigen Umhüllung 513 auf. Ein Filtermantel 514 umgibt den Filterkern 512 bzw. seine Umhüllung 513 koaxial. Der Durchmesser des Filtermantels 514 entspricht dem Durchmesser des Außenmantels 504 des Strangteils 501. Der Filtermantel 514 hat eine luftundurchlässige Umhüllung 515, die auch zur Verbindung von Strangteil 501 und koaxialem Filterelement 511 dient. In der luftundurchlässigen Umhüllung 515 für den Filtermantel 514 befindet sich eine Ventilationszone 516.The coaxial filter element 511 has a filter core 512 with an air-impermeable covering 513. A filter jacket 514 coaxially surrounds the filter core 512 or its casing 513. The diameter of the filter jacket 514 corresponds to the diameter of the outer jacket 504 of the strand part 501 Filter jacket 514 has an air-impermeable covering 515, which also serves to connect the strand part 501 and the coaxial filter element 511. A ventilation zone 516 is located in the air-impermeable casing 515 for the filter jacket 514.

In der Umhüllung 505 für den Außenmantel 504 befindet sich am filterseitigen Ende des Strangteils 501 eine Ventilationszone, die elektrostatisch oder mittels Laser hergestellt wird. Die Einstellung der Ventilation und somit des Rauchgemisches kann auf zwei Arten erfolgen:In the casing 505 for the outer jacket 504 there is a ventilation zone at the filter-side end of the strand part 501, which is produced electrostatically or by means of a laser. The ventilation and thus the smoke mixture can be set in two ways:

Im ersten Fall umschließt ein drehbarer Ring 507, der in radialer Richtung abschnittsweise Perforationen aufweist, das koaxiale Filterelement 511 und den Strangteil 501. Die Ventilationszone 506 des Strangteils 501 weist ebenfalls in radialer Richtung nur abschnittsweise Perforationen auf. Durch das Drehen des Rings 507 kommen die Ventilationszone 508 des Rings 507 und die Ventilationszone 506 des Strangteils zur Deckung und ermöglichen so eine Ventilierung des Tabakstrangs vorzugsweise im Bereich von 20 - 50 % Ventilationsgrad.In the first case, a rotatable ring 507, which has perforations in sections in the radial direction, surrounds the coaxial filter element 511 and the strand part 501. The ventilation zone 506 of the strand part 501 likewise only has perforations in sections in the radial direction. By rotating the ring 507, the ventilation zone 508 of the ring 507 and the ventilation zone 506 of the strand part overlap and thus enable ventilation of the tobacco rod, preferably in the range of 20-50% ventilation degree.

Im zweiten Fall umgibt ein Ring 507, der in axialer Richtung über die Ventilationszone des Strangteils 501 schiebbar ist, den Außenmantel 515 des Filterelements 511. Dadurch kann die Ventilationszone 506 des Strangteils 501 teilweise oder gesamt abgedeckt werden, wodurch sich das Ventilationsverhältnis vom Raucher einstellen läßt.In the second case, a ring 507, which can be pushed in the axial direction over the ventilation zone of the strand part 501, surrounds the outer jacket 515 of the filter element 511. As a result, the ventilation zone 506 of the strand part 501 can be partially or completely covered, as a result of which the ventilation ratio can be adjusted by the smoker .

Eine Rauchmischzone 520 befindet sich im tabakseitigen Teil des Filterkerns 512, wobei hier die Räuche des Außenmantels 504 und des Innenkerns 502 des Strangteils 501 im Filterkern 512 vermischt werden.A smoke mixing zone 520 is located in the tobacco-side part of the filter core 512, the fumes of the outer shell 504 and the inner core 502 of the strand part 501 in the filter core 512 being mixed here.

Durch die Ventilationszone 516 einerseits und die veränderbare Ventilationszone am filterseitigen Ende des Strangteils 501 andererseits lassen sich die beiden vom Strangteil 501 kommenden Rauchströme beeinflussen und durch Variation der Ventilation, wie erläutert, auch verstellen, so daß eine vom eingestellten Ventilationsgrad abhängige Zumischung des Rauches aus einem Strangsegment zu dem Rauch aus dem anderen Segment erfolgt. Das Verhältnis der beiden Rauchströme wird "verstimmt", und das Rauchgleichgewicht ändert sich, wodurch sich bestimmte Geschmacksnuancen hervorrufen lassen.Through ventilation zone 516 on the one hand and the changeable ventilation zone at the filter-side end of the strand part 501, on the other hand, the two smoke streams coming from the branch part 501 can be influenced and also adjusted by varying the ventilation, as explained, so that the smoke from one branch segment is admixed to the smoke from the other segment depending on the set degree of ventilation. The ratio of the two smoke streams is "detuned" and the smoke balance changes, which can cause certain taste nuances.

Claims (8)

  1. A coaxial filter cigarette comprising
    A) a coaxial rod portion (101, 201, 401, 501)
    a) having an inner core (102, 202, 402, 502) of a material smouldering substantially residue-free, in particular tobacco material,
    b) having a wrapper (103, 203, 403, 503) for the inner core (102, 202, 402, 502),
    c) having an outer jacket (104, 204, 404, 504) consisting of a tobacco and/or non-tobacco material and coaxially surrounding the inner core (102, 202, 402, 502) and its wrapper (103, 203, 403, 503),
    d) and having an air-permeable wrapper (105, 205, 405, 505) for the outer jacket (104, 204, 404, 504) and
    B) comprising a coaxial filter element (111, 211, 411, 511)
    a) having a filter core (112, 212, 412, 512) having an air-impermeable wrapper (113, 213, 413, 513),
    b) having a filter jacket (114, 214, 414, 514) coaxially surrounding the filter core (112, 212, 412, 512) and its wrapper (113, 213, 413, 513) and having a diameter corresponding to the diameter of the outer jacket,
    c) having an air-impermeable wrapper (115, 215, 415, 515) for the filter jacket (114, 214, 414, 514) serving also to connect the rod portion (101, 201, 401, 501) and the filter element (111, 211, 411, 511), and
    d) having a ventilation zone (116, 216, 416, 516) in the air-impermeable wrapper (115, 215, 415, 515) for the filter jacket (114, 214, 414, 514),
    characterized by the following features:
    C) in the transition region between the rod portion (101, 201, 401, 501) and the filter element (111, 211, 411, 511) a smoke mixing zone (120, 220, 420, 520) is formed for defined variation of the smoke streams leaving rod portion (101, 201, 401, 501) before they flow into the filter element (111, 211, 411, 511).
  2. A coaxial filter cigarette according to claim 1, characterized in that the smoke mixing zone (120, 420) is formed in that the rod portion (101, 401) is arranged with its filter-side end spaced from the tobacco-side end of the coaxial filter element (111, 411), a cavity (120, 420) thereby being formed which is surrounded by the air-impermeable wrapper (115, 415) of the filter jacket (114, 414).
  3. A coaxial filter cigarette according to claim 1, characterized in that the smoke mixing zone (220) is formed in that the wrapper (203) of the inner core (202) of the rod portion (201) is provided with a perforation zone in the region of its filter-side end.
  4. A coaxial filter cigarette according to claims 1 to 3, characterized in that the empty volume proportion of the rod portion (101, 201, 401, 501) lies in the range between about 40% and about 80%.
  5. A coaxial filter cigarette according to claims 1 to 4, characterized in that the empty volume proportion of the filter element (111, 211, 411, 511) is at least 80%, preferably more than 90%.
  6. A coaxial filter cigarette according to one of the claims 1 to 5, characterized in that the rod portion (401) arranged with its filter-side end spaced from the tobacco-side end of the filter element (411) is displaceable within predefined markings on the wrapper (405) of the outer jacket (404) in the axial direction in a projecting edge region of the wrapper (415) of the filter element (411).
  7. A coaxial filter cigarette according to one of the claims 1 to 6, characterized in that the wrapper (505) of the outer jacket (504) of the rod portion (501) comprises in the region of the filter beginning a perforation zone (506) which is at least partially coverable by a ring (507) displaceable on the outer surface of the coaxial filter cigarette and having corresponding perforations (508), so that by varying the ventilation the smoke streams can be influenced and thus an admixing of the smoke stream to another takes place.
  8. A coaxial filter cigarette according to claim 7, characterized in that the ring (507) is arranged displaceably or rotatably on the outer periphery of the coaxial filter cigarette.
EP94106843A 1993-06-24 1994-05-02 Coaxial filter cigarette Expired - Lifetime EP0630587B1 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE4321069A DE4321069C2 (en) 1993-06-24 1993-06-24 Coaxial filter cigarette
DE4321069 1993-06-24

Publications (2)

Publication Number Publication Date
EP0630587A1 EP0630587A1 (en) 1994-12-28
EP0630587B1 true EP0630587B1 (en) 1997-10-15

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US (1) US5439011A (en)
EP (1) EP0630587B1 (en)
AT (1) ATE159147T1 (en)
BR (1) BR9401850A (en)
DE (2) DE4321069C2 (en)
DK (1) DK0630587T3 (en)
ES (1) ES2109540T3 (en)
GR (1) GR3025511T3 (en)
HK (1) HK1002621A1 (en)

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DE4321069A1 (en) 1995-01-05
DK0630587T3 (en) 1998-02-09
US5439011A (en) 1995-08-08
GR3025511T3 (en) 1998-02-27
HK1002621A1 (en) 1998-09-04
DE4321069C2 (en) 1998-09-10
EP0630587A1 (en) 1994-12-28
ATE159147T1 (en) 1997-11-15
BR9401850A (en) 1995-01-17
DE59404308D1 (en) 1997-11-20
ES2109540T3 (en) 1998-01-16

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