EP0503461A1 - Coaxial cigarette - Google Patents

Coaxial cigarette Download PDF

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Publication number
EP0503461A1
EP0503461A1 EP92103690A EP92103690A EP0503461A1 EP 0503461 A1 EP0503461 A1 EP 0503461A1 EP 92103690 A EP92103690 A EP 92103690A EP 92103690 A EP92103690 A EP 92103690A EP 0503461 A1 EP0503461 A1 EP 0503461A1
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EP
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Prior art keywords
coaxial
core
filter
cigarette
periphery
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EP92103690A
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German (de)
French (fr)
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EP0503461B1 (en
Inventor
Werner Dr. Schneider
Erwin Dr. Kausch
Bernd-Henrik Dr. Müller
Adolf Dr. Schlüter
Erhard Prof. Dr. Rittershaus
Horst Borowski
Gert Dr. Rudolph
Wolfgang Dipl.-Ing. Trinkies
Wolfgang Dr. Wiethaup
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British American Tobacco Germany GmbH
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British American Tobacco Germany GmbH
BAT Cigarettenfabriken GmbH
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Publication of EP0503461A1 publication Critical patent/EP0503461A1/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
    • A24D1/00—Cigars; Cigarettes

Definitions

  • the invention relates to a coaxial cigarette of the type specified in the preamble of claim 1 or in the preamble of claim 2.
  • coaxial smokable articles have been described in various publications. These coaxial smokable items are usually coaxial cigars or cigarettes with an inner core surrounded by a jacket made of tobacco material. Such a coaxial cigarette was e.g. B. mentioned in FR-PS 998 556. Their inner core consisted of a tobacco of lower quality, their coat from a higher quality tobacco. This made it possible to achieve savings in terms of the tobacco material required.
  • Such coaxial cigarettes also emerge from other prior publications, for. B. from FR-PS 1 322 254, US-PS 3 614 956, US-PS 4 219 031, GB-OS 2 070 409 and GB-PS 1 086 443.
  • a relatively developed coaxial cigarette is in DE-OS 36 02 846 described. However, this does not have a filter that could trap the unwanted smoke components.
  • a coaxial cigarette is known from DE 40 20 496 A1, which is encased in a metallic foil envelope.
  • the space formed thereby and containing tobacco is surrounded by a hollow cylinder made of carbon fuel, which is surrounded by an air-permeable casing.
  • the known cigarette has a filter at one end.
  • the generic coaxial cigarette according to DE-PS 37 43 597 is additionally provided with a ventilated coaxial filter with a filter core, the inner diameter of which corresponds approximately to the diameter of the inner core of the coaxial cigarette and which has a filter jacket.
  • the filter core has an airtight covering.
  • the filter jacket has an air-permeable covering.
  • the sheathing of the inner core of the coaxial cigarette and the sheathing of the outer jacket of the same are provided with smoldering salts, the tensile resistance of the inner core being lower than the tensile resistance of the outer jacket of the coaxial cigarette.
  • This known coaxial cigarette has the advantage that undesirable combustion products are largely retained in the coaxial filter.
  • the object of the present invention to remedy the disadvantages of the known prior art.
  • the ratios of the tensile resistances per unit length to the respective packing density with an air-impermeable covering for the core or air-impermeable inner and outer covering and impermeable core for the strand periphery and a flow of 17.5 ml / s were measured.
  • coaxial cigarette according to the invention With the help of the coaxial cigarette according to the invention it is possible, despite filter ventilation, to achieve a significant increase in the quotient "condensate yield / nicotine yield per cigarette” (abbreviation: K / N) without the use of a coaxial filter type being necessary for this. This means that the consumer can enjoy the full amount of smoke, while filter ventilation reduces unwanted gaseous smoke components.
  • the coaxial cigarette according to the invention can be produced at the same time without great technical outlay and without using special materials, so that it is less expensive. Consumers therefore have an alternative to the conventional cigarette, not only in theory.
  • the positive effects can be intensified if the conventional filter used is ventilated, that is to say is provided with small openings or perforations.
  • the condensate yield is the nicotine-free dry condensate, measured according to DIN.
  • the nicotine yield is also determined according to the known standard regulations.
  • the K / N value of which corresponds approximately to the K / N value of a filterless cigarette the result is a mixture nicotine content in the strand core of more than 3% and a mixture nicotine content in the strand periphery of less than 1 ,1 %.
  • any commercially available or other filter known in the art can be used as the filter. It is particularly important to ensure that the tensile resistance of the filter used is greater than 15 mm water column (mm WS), measured closed.
  • a ventilation zone advantageously provided in the filter used should allow degrees of ventilation in the range of approximately 40 to approximately 80% for a given tensile resistance of the coaxial line.
  • a cellulose acetate filter with a tensile resistance between 40 and 80 mm WS and / or a degree of ventilation between 40 and 80%.
  • the effects achieved are stronger, the higher the degree of ventilation of the filter.
  • the coaxial cigarette according to the invention generally has a coaxial tobacco rod, the overall diameter of which is between approximately 7 and 9 mm.
  • the strand core has a diameter between 3 and 6 mm, with diameters between 4.5 and 5.5 mm being preferred.
  • the air permeability of the wrapping of the strand core that is the inner wrapping of the coaxial strand, which usually consists of cigarette paper or tobacco foil, is preferably less than 25 ISO units.
  • the outer wrapping of the tobacco rod which is generally made of cigarette paper or Tobacco film is preferably has an air permeability that is between 25 and 50 ISO units.
  • Case A With a ratio of tensile resistance to packing density for the core of the coaxial strand of 0.23 and for the jacket of 0.08, the K / N value becomes 7.3, with the mixture nicotine content in the core being 0.9% and in Coat is 4.5%.
  • Case B With a ratio of tensile resistance to packing density in the core of 0.17 and in the shell of 0.09, the K / N value is 13.3, the content of the mixture nicotine in the core being 4.5% and in the shell Is 0.9%.
  • the coaxial cigarette 10 has a coaxial tobacco rod to which a conventional, commercially available filter 15 is connected.
  • the filter 15 is provided with ventilation openings 28. These ventilation openings are advantageously located in a filter covering paper, which is not explicitly shown and which also serves to fasten the filter to the tobacco rod.
  • the filter wrapping paper covered by the filter paper is air-permeable or perforated like the paper.
  • At the end 22 of the filter 15 there is the pull opening at which the consumer pulls or sucks in order to enjoy the ingredients of the burning tobacco.
  • the coaxial tobacco rod 12 consists of a core 14 and a periphery or jacket 18.
  • the core 14 is provided with a covering 16, which generally consists of cigarette paper or tobacco foil.
  • the periphery 18 is also surrounded by an envelope 20, which also consists of cigarette paper or a tobacco foil.
  • the core 14 of the coaxial strand 12 and the periphery 18 of the coaxial strand 12 have different ratios of the tensile resistance per unit length to the packing density.
  • this ratio is between about 0.13 and about 0.27 mm WS cm2 / mg.
  • this ratio is between approximately 0.07 and approximately 0.11 mm WS cm 2 / mg.
  • the diameter of the coaxial cigarette 10 according to the invention is generally between 7 and 9 mm, values between 7.2 and 8 mm being preferred.
  • the strand core 14 has a diameter between 3 and 6 mm, preferably between 4.5 and 5.5 mm.
  • the air permeability of the sheath 16 of the strand core is less than 25 ISO units, while the air permeability of the sheath 20 of the jacket 18 is between approximately 25 and approximately 59 ISO units.
  • the filter 15 has a tensile resistance that is greater than about 15 mm WS.
  • the ventilation achieved via preferably a plurality of ventilation openings 28 is in the range from approximately 40 to 80%.
  • a cellulose acetate filter with a tensile resistance between 40 and 80 mm water column (measured closed) and a degree of ventilation between approximately 40 and approximately 80% is particularly recommended as a filter.
  • Case A With a ratio of tensile resistance to packing density for core 14 of coaxial strand 20 of 0.23 and for jacket 18 of 0.08, the K / N value was 7.3, with a mixture nicotine content in core 14 of 0.9% and with a mixture of nicotine in the jacket 18 of 4.5%.
  • Case B With a ratio of tensile resistance to packing density in the core 14 of 0.17 and in the jacket 18 of 0.09, a K / N value of 13.3 resulted with a mixture nicotine content in the core 14 of 4.5%. and in the jacket 18 of 0.9%.
  • a filterless coaxial line 12 with a K / N value of 7.2 (case A) or 8.6 (case B) was used, to which a ventilated filter 15 with a degree of ventilation of approximately 75% and a tensile resistance of 70 mm WS (measured closed) was used.

Abstract

The invention relates to a coaxial cigarette (10) having a coaxial tobacco rod consisting of a core (14) and a rod periphery (18) which contain different mixtures, the wrappings (16, 20) of the rod core and of the rod periphery consisting of combustible material and a filter tip (15) being provided at one end of the coaxial tobacco rod; according to the invention, the ratio between the drawing resistance of the core per unit of length and its packing density is in the region of from about 0.13 to about 0.27 mm water gauge cm<2>/mg, while the ratio of the drawing resistance per unit length of the rod periphery to its packing density is in the region of from about 0.07 to about 0.11 mm water gauge cm<2>/mg; the filter tip is a conventional, preferably ventilated filter. <IMAGE>

Description

Die Erfindung betrifft eine Koaxialcigarette der im Oberbegriff des Anspruchs 1 bzw. der im Oberbegriff des Anspruchs 2 angegebenen Gattung.The invention relates to a coaxial cigarette of the type specified in the preamble of claim 1 or in the preamble of claim 2.

In verschiedenen Veröffentlichungen sind sogenannte "koaxiale rauchbare Artikel" beschrieben worden. Bei diesen koaxialen rauchbaren Artikeln handelt es sich in der Regel um Koaxial-Cigarren oder -Cigaretten mit einem Innenkern, der durch einen Mantel aus Tabakmaterial umgeben ist. Eine derartige Koaxialcigarette wurde z. B. in der FR-PS 998 556 erwähnt. Ihr Innenkern bestand aus einem Tabak geringerer Qualität, ihr Mantel aus einem höherwertigen Tabak. Dadurch wurde es möglich, Einsparungen im Hinblick auf das benötigte Tabakmaterial zu erzielen.So-called "coaxial smokable articles" have been described in various publications. These coaxial smokable items are usually coaxial cigars or cigarettes with an inner core surrounded by a jacket made of tobacco material. Such a coaxial cigarette was e.g. B. mentioned in FR-PS 998 556. Their inner core consisted of a tobacco of lower quality, their coat from a higher quality tobacco. This made it possible to achieve savings in terms of the tobacco material required.

Auch aus weiteren Vorveröffentlichungen gehen derartige Koaxialcigaretten hervor, so z. B. aus der FR-PS 1 322 254, der US-PS 3 614 956, der US-PS 4 219 031, der GB-OS 2 070 409 und der GB-PS 1 086 443. Eine relativ weit entwickelte Koaxialcigarette wird in der DE-OS 36 02 846 beschrieben. Diese weist jedoch keinen Filter auf, der die unerwünschten Rauchbestandteile abfangen könnte.Such coaxial cigarettes also emerge from other prior publications, for. B. from FR-PS 1 322 254, US-PS 3 614 956, US-PS 4 219 031, GB-OS 2 070 409 and GB-PS 1 086 443. A relatively developed coaxial cigarette is in DE-OS 36 02 846 described. However, this does not have a filter that could trap the unwanted smoke components.

Bei der Koaxialcigarette nach der US-PS 3 356 094 sind ein inneres Hohlrohr und eine Aerosol-Kammer mit einem engen Auslaß vorgesehen. Diese Art von Koaxialcigarette ist jedoch praktisch nicht verwendbar, da sie nur aufgrund eines sehr kostspieligen Verfahrens herzustellen ist und außerdem aufgrund der verschiedenen voneinander getrennten Bestandteile ein ungewöhnliches Rauchmuster hat, das für diese charakteristisch ist.In the coaxial cigarette according to US Pat. No. 3,356,094, an inner hollow tube and an aerosol chamber with a narrow outlet are provided. However, this type of coaxial cigarette is practically unusable, since it can only be produced by a very expensive process and, moreover, because of the different components separated from one another, it has an unusual smoking pattern which is characteristic of it.

Aus der DE 40 20 496 A1 ist eine Koaxialcigarette bekannt, die von einer metallischen Folienhülle eingehüllt ist. Der dadurch gebildete, Tabak enthaltende Raum ist von einem Hohlzylinder aus Kohlenstoff-Brennstoff umgeben, der von einer luftdurchlässigen Hülle umgeben ist. Schließlich weist die bekannte Cigarette einen Filter an einem Ende auf.A coaxial cigarette is known from DE 40 20 496 A1, which is encased in a metallic foil envelope. The space formed thereby and containing tobacco is surrounded by a hollow cylinder made of carbon fuel, which is surrounded by an air-permeable casing. Finally, the known cigarette has a filter at one end.

Hätte die bekannte Cigarette gemäß der DE 40 20 496 A1 einen Zugwiderstand von 10 mm WS/cm Tabakstrang, so würden sich durch Umrechnung daraus für den Kern 0,10 bis 0,33 mm WS cm²/ mg errechnen lassen.If the known cigarette according to DE 40 20 496 A1 had a tensile resistance of 10 mm WS / cm tobacco rod, then 0.10 to 0.33 mm WS cm² / mg for the core could be calculated therefrom.

Diese Ausgestaltung führt sowohl zu einer Verteuerung als auch zu einer Verkomplizierung der Herstellung dieser bekannten Koaxialcigarette, wobei gleichzeitig die Akzeptanzdieses Produktes für den Konsumenten sinkt, da sowohl ein ungewöhnliches Rauchmuster als auch ein reduziertes Raucherlebnis beim Abrauchen dieser Koaxialcigarette entstehen.This configuration leads to both an increase in the cost and a complication of the production of this known coaxial cigarette, while at the same time the acceptance of this product for the consumer decreases, since both an unusual smoking pattern and a reduced smoking experience arise when smoking this coaxial cigarette.

Die gattungsgemäße Koaxialcigarette nach der DE-PS 37 43 597 ist zusätzlich mit einem ventilierten Koaxialfilter mit einem Filterkern versehen, dessen Innendurchmesser etwa dem Durchmesser des Innenkerns der Koaxialcigarette entspricht und der einen Filtermantel aufweist. Außerdem hat der Filterkern eine luftundurchlässige Umhüllung. Der Filtermantel weist eine luftdurchlässige Umhüllung auf. Die Umhüllung des Innenkerns der Koaxialcigarette und die Umhüllung des Außenmantels derselben sind mit Glimmsalzen versehen, wobei der Zugwiderstand des Innenkerns niedriger ist als der Zugwiderstand des Außenmantels der Koaxialcigarette. Diese bekannte Koaxialcigarette hat den Vorteil, daß unerwünschte Verbrennungsprodukte zu einem großen Teil in dem Koaxialfilter zurückgehalten werden.The generic coaxial cigarette according to DE-PS 37 43 597 is additionally provided with a ventilated coaxial filter with a filter core, the inner diameter of which corresponds approximately to the diameter of the inner core of the coaxial cigarette and which has a filter jacket. In addition, the filter core has an airtight covering. The filter jacket has an air-permeable covering. The sheathing of the inner core of the coaxial cigarette and the sheathing of the outer jacket of the same are provided with smoldering salts, the tensile resistance of the inner core being lower than the tensile resistance of the outer jacket of the coaxial cigarette. This known coaxial cigarette has the advantage that undesirable combustion products are largely retained in the coaxial filter.

Nachteilig bei der gattungsgemäßen Koaxialcigarette ist jedoch, daß deren Herstellung relativ kompliziert und teuer ist.A disadvantage of the generic coaxial cigarette, however, is that its production is relatively complicated and expensive.

Es ist deshalb die Aufgabe der vorliegenden Erfindung, den Nachteilen des bekannten Standes der Technik abzuhelfen. Insbesondere ist es die Aufgabe der vorliegenden Erfindung, eine Koaxialcigarette der angegebenen Gattung zu schaffen, die einerseits kostengünstiger herstellbar ist und andererseits ein günstiges Verhältnis von erwünschtem Nikotin und Aromabestandteilen bei gleichzeitiger Verminderung unerwünschter Gasphasenbestandteile im Hauptrauch ermöglicht.It is therefore the object of the present invention to remedy the disadvantages of the known prior art. In particular, it is the object of the present invention to provide a coaxial cigarette of the specified type which, on the one hand, can be manufactured more cost-effectively and, on the other hand, enables a favorable ratio of the desired nicotine and aroma components while at the same time reducing undesirable gas phase components in the main smoke.

Diese Aufgabe wird sowohl durch eine Koaxialcigarette mit den Merkmalen des Patentanspruchs 1 als auch durch eine Koaxialcigarette mit den Merkmalen des Patentanspruchs 2 gelöst.This object is achieved both by a coaxial cigarette with the features of claim 1 and by a coaxial cigarette with the features of claim 2.

Zweckmäßige Ausgestaltungen gehen aus den Merkmalen in den Unteransprüchen hervor.Useful features emerge from the features in the subclaims.

Es hat sich in äußerst überraschender Weise gezeigt, daß unerwünschte Rauchbestandteile auch dann in einer Koaxialcigarette zurückbehalten werden können, wenn ein herkömmlicher, also kein Koaxial-Filter, verwendet wird. Dabei ist es erforderlich, daß das Verhältnis des Zugwiderstandes pro Längeneinheit des Kerns des koaxialen Tabakstrangs zu dessen Packungsdichte im Bereich von ca. 0,13 bis ca. 0,27 mm WS cm²/mg liegt, während das Verhältnis aus Zugwiderstand pro Längeneinheit der Strangperipherie des koaxialen Tabakstrangs zu deren Packungsdichte im Bereich von ca. 0,07 bis ca. 0,11 mm WS cm²/mg liegt.It has been shown in an extremely surprising manner that undesirable smoke constituents can also be retained in a coaxial cigarette if a conventional, that is to say no coaxial, filter is used. It is necessary that the ratio of the tensile resistance per unit length of the core of the coaxial tobacco rod to its packing density is in the range of about 0.13 to about 0.27 mm WS cm² / mg, while the ratio of the tensile resistance per unit length of the strand periphery of the coaxial tobacco rod to their packing density in the range of about 0.07 to about 0.11 mm WS cm² / mg.

Dabei sind die Verhältnisse der Zugwiderstände pro Längeneinheit zur jeweiligen Packungsdichte bei einer luftundurchlässigen Umhüllung für den Kern bzw. luftundurchlässiger Innen- und Außenumhüllung und undurchlässigem Kern für die Strangperipherie und einem Durchfluß von 17,5 ml/s gemessen worden.The ratios of the tensile resistances per unit length to the respective packing density with an air-impermeable covering for the core or air-impermeable inner and outer covering and impermeable core for the strand periphery and a flow of 17.5 ml / s were measured.

Mit Hilfe der erfindungsgemäßen Koaxialcigarette ist es möglich, trotz Filterventilation eine deutliche Erhöhung des Quotienten "Kondensatausbeute/Nikotinausbeute pro Cigarette" (Abkürzung: K/N) zu erreichen, ohne daß hierfür die Verwendung eines koaxialen Filtertyps notwendig wird. Das heißt, daß dem Konsumenten der volle Rauchgenuß zur Verfügung steht, während gleichzeitig durch die Filterventilation unerwünschte gasförmige Rauchbestandteile vermindert werden. Dabei ist die erfindungsgemäße Koaxialcigarette gleichzeitig ohne grossen technischen Aufwand und ohne Verwendung besonderer Materialien herstellbar, so daß sie kostengünstiger ist. Den Verbrauchern steht somit nicht nur theoretisch eine Alternative zur herkömmlichen Cigarette zur Verfügung.With the help of the coaxial cigarette according to the invention it is possible, despite filter ventilation, to achieve a significant increase in the quotient "condensate yield / nicotine yield per cigarette" (abbreviation: K / N) without the use of a coaxial filter type being necessary for this. This means that the consumer can enjoy the full amount of smoke, while filter ventilation reduces unwanted gaseous smoke components. The coaxial cigarette according to the invention can be produced at the same time without great technical outlay and without using special materials, so that it is less expensive. Consumers therefore have an alternative to the conventional cigarette, not only in theory.

Die positiven Effekte lassen sich erfindungsgemäß intensivieren, wenn der verwendete konventionelle Filter ventiliert, das heißt, mit kleinen Öffnungen bzw. Perforationen versehen ist.According to the invention, the positive effects can be intensified if the conventional filter used is ventilated, that is to say is provided with small openings or perforations.

Bei einem erfindungsgemäßen Mischungsnikotin-Gehalt von mehr als ca. 3 % im Peripheriebereich des Koaxialstrangs, wie laut Patentanspruch 1 vorgeschlagen, ergibt sich, daß der K/N-Wert der Cigarette deutlich größer ist als der K/N-Wert der filterlosen Cigarette, und zwar trotz Ventilationsgraden bis zu 80 %. Gleichzeitig gilt für die Tabakmischung im Kern, daß der Mischungsnikotin-Gehalt weniger als 1,1 % beträgt. Der angegebene Ventilationsgrad bis zu ca. 80 % steht für den Ventilationsgrad des erfindungsgemäß verwendeten herkömmlichen Filters.With a mixture nicotine content according to the invention of more than approx. 3% in the peripheral region of the coaxial line, as suggested according to claim 1, it follows that the K / N value of the cigarette is significantly greater than the K / N value of the filterless cigarette, despite ventilation levels up to 80%. At the same time it applies to the tobacco mixture in the core that the mixture nicotine content is less than 1.1%. The specified degree of ventilation up to approximately 80% stands for the degree of ventilation of the conventional filter used according to the invention.

Bei der Kondensatausbeute handelt es sich um das nikotinfreie Trockenkondensat, nach DIN gemessen. Die Nikotinausbeute wird gleichfalls nach den bekannten Norm-Vorschriften bestimmt.The condensate yield is the nicotine-free dry condensate, measured according to DIN. The nicotine yield is also determined according to the known standard regulations.

Für eine erfindungsgemäße Koaxialcigarette gemäß dem Patentanspruch 2, deren K/N-Wert ungefähr dem K/N-Wert einer filterlosen Cigarette entspricht, ergibt sich ein Mischungsnikotin-Gehalt im Strangkern von mehr als 3 % und ein Mischungsnikotingehalt in der Strangperipherie von weniger als 1,1 %.For a coaxial cigarette according to the invention, the K / N value of which corresponds approximately to the K / N value of a filterless cigarette, the result is a mixture nicotine content in the strand core of more than 3% and a mixture nicotine content in the strand periphery of less than 1 ,1 %.

Als Filter kann jeder im Handel erhältliche oder sonstige nach dem Stand der Technik bekannte Filter verwendet werden. Dabei ist insbesondere darauf zu achten, daß der Zugwiderstand des verwendeten Filters größer ist als 15 mm Wassersäule (mm WS), geschlossen gemessen.Any commercially available or other filter known in the art can be used as the filter. It is particularly important to ensure that the tensile resistance of the filter used is greater than 15 mm water column (mm WS), measured closed.

Eine bei dem verwendeten Filter vorteilhafterweise vorgesehene Ventilationszone sollte bei einem gegebenen Zugwiderstand des Koaxialstrangs Ventilationsgrade im Bereich von ca. 40 bis ca. 80 % erlauben.A ventilation zone advantageously provided in the filter used should allow degrees of ventilation in the range of approximately 40 to approximately 80% for a given tensile resistance of the coaxial line.

Besonders zweckmäßig ist es, einen Celluloseacetatfilter mit einem Zugwiderstand zwischen 40 und 80 mm WS und/oder einem Ventilationsgrad zwischen 40 und 80 % zu verwenden. Dabei sind die erzielten Effekte umso stärker, je höher der Ventilationsgrad des Filters ist.It is particularly expedient to use a cellulose acetate filter with a tensile resistance between 40 and 80 mm WS and / or a degree of ventilation between 40 and 80%. The effects achieved are stronger, the higher the degree of ventilation of the filter.

Die erfindungsgemäße Koaxialcigarette weist in der Regel einen koaxialen Tabakstrang auf, dessen Gesamtdurchmesser zwischen ca. 7 und 9 mm liegt. Der Strangkern hat einen Durchmesser zwischen 3 und 6 mm, wobei Durchmesser zwischen 4,5 und 5,5 mm bevorzugt sind.The coaxial cigarette according to the invention generally has a coaxial tobacco rod, the overall diameter of which is between approximately 7 and 9 mm. The strand core has a diameter between 3 and 6 mm, with diameters between 4.5 and 5.5 mm being preferred.

Die Luftdurchlässigkeit der Umhüllung des Strangkerns, das ist die innere Umhüllung des Koaxialstranges, die in der Regel aus Cigarettenpapier oder Tabakfolie besteht, ist vorzugsweise kleiner als 25 ISO-Einheiten. Die äußere Umhüllung des Tabakstrangs, die im allgemeinen aus Cigarettenpapier oder Tabakfolie besteht, weist vorzugsweise eine Luftdurchlässigkeit auf, die zwischen 25 und 50 ISO-Einheiten liegt.The air permeability of the wrapping of the strand core, that is the inner wrapping of the coaxial strand, which usually consists of cigarette paper or tobacco foil, is preferably less than 25 ISO units. The outer wrapping of the tobacco rod, which is generally made of cigarette paper or Tobacco film is preferably has an air permeability that is between 25 and 50 ISO units.

Gegeben seien beispielsweise zwei filterlose Koaxialstränge mit einem K/N-Wert von 7,2 (Fall A) bzw. 8,6 (Fall B). An diese Stränge werden gleiche ventilierte Filter mit einem Ventilationsgrad von ca. 75 % und einem Zugwiderstand von 70 mm WS, geschlossen gemessen, angesetzt.For example, there are two filterless coaxial strands with a K / N value of 7.2 (case A) and 8.6 (case B). The same ventilated filters with a ventilation degree of approx. 75% and a tensile resistance of 70 mm WS, measured closed, are attached to these strands.

Würde ein herkömmlicher, normaler Strang verwendet, so würde dieser Ventilationsgrad und die damit verbundene Verdünnung des Rauches zu einer deutlichen Erniedrigung des K/N-Wertes führen. Hierzu wird auf den Artikel "Beiträge zur Tabakforschung", Band 7, Heft 5, September 1974, Seiten 282 ff. von V. Norman verwiesen. Diese Erniedrigung liegt für vorliegende Ventilationsgrade z. B. in einem Bereich von 30 bis 40 %, sollte also zu einem K/N-Wert von etwa 4 (Fall A) bzw. 5 (Fall B) führen.If a conventional, normal line were used, this degree of ventilation and the associated thinning of the smoke would lead to a significant reduction in the K / N value. Please refer to the article "Contributions to Tobacco Research", Volume 7, No. 5, September 1974, pages 282 ff. By V. Norman. This reduction is for existing degrees of ventilation z. B. in a range of 30 to 40%, should therefore lead to a K / N value of about 4 (case A) or 5 (case B).

Bei einer Koaxialcigarette gemäß der vorliegenden Erfindung ergeben sich für die beiden, hier zu unterscheidenden Fälle (A, B) jedoch die nachfolgenden Werte:In the case of a coaxial cigarette according to the present invention, however, the following values result for the two cases (A, B) to be distinguished here:

Fall A: Bei einem Verhältnis des Zugwiderstandes zur Packungsdichte für den Kern des Koaxialstranges von 0,23 und für den Mantel von 0,08 wird der K/N-Wert 7,3 wobei der Mischungsnikotin-Gehalt im Kern 0,9 % und im Mantel 4,5 % beträgt.Case A: With a ratio of tensile resistance to packing density for the core of the coaxial strand of 0.23 and for the jacket of 0.08, the K / N value becomes 7.3, with the mixture nicotine content in the core being 0.9% and in Coat is 4.5%.

Fall B: Bei einem Verhältnis des Zugwiderstandes zur Packungsdichte im Kern von 0,17 und im Mantel von 0,09 ergibt sich ein K/N-Wert von 13,3, wobei der Gehalt des Mischungsnikotins im Kern 4,5 % und im Mantel 0,9 % beträgt.Case B: With a ratio of tensile resistance to packing density in the core of 0.17 and in the shell of 0.09, the K / N value is 13.3, the content of the mixture nicotine in the core being 4.5% and in the shell Is 0.9%.

Diese Werte zeigen in beeindruckender Weise die Vorteile der Koaxialcigarette nach der vorliegenden Erfindung, das heißt, ein günstiges Verhältnis von erwünschtem Nikotin und Aromabestandteilen bei gleichzeitiger Verminderung unerwünschter Gasphasenbestandteile durch Ventilation, verbunden mit dem angestrebten vollen Geschmackseindruck. Dabei weist die vorliegende Erfindung eine herausragende Praktikabilität auf, die dem Konsumenten eine echte Alternative zur herkömmlichen Cigarette bietet.These values impressively demonstrate the advantages of the coaxial cigarette according to the present invention, that is to say a favorable ratio of desired nicotine and aroma components while at the same time reducing undesired gas phase components by ventilation, combined with the desired full taste impression. The present invention has outstanding practicality, which offers the consumer a real alternative to the conventional cigarette.

Im folgenden wird die Koaxialcigarette nach der vorliegenden Erfindung unter Bezugnahme auf die beigefügte Figur erläutert, die einen Längsschnitt durch die Koaxialcigarette zeigt. Dabei werden weitere Vorteile und Merkmale der vorliegenden Erfindung offenbart.In the following, the coaxial cigarette according to the present invention is explained with reference to the attached figure, which shows a longitudinal section through the coaxial cigarette. Further advantages and features of the present invention are disclosed.

Die erfindungsgemäße Koaxialcigarette 10 weist einen koaxialen Tabakstrang auf, an den sich ein herkömmlicher, handelsüblicher Filter 15 anschließt. Der Filter 15 ist mit Ventilationsöffnungen 28 versehen. Diese Ventilationsöffnungen befinden sich vorteilhafterweise in einem nicht explizit dargestellten Filterbelagpapier, das gleichzeitig zur Befestigung des Filters am Tabakstrang dient. Das vom Filterbelagpapier überdeckte Filterumhüllungspapier ist luftdurchlässig oder wie das Belagpapier perforiert. Am Ende 22 des Filters 15 befindet sich die Zugöffnung, an der der Konsument zieht bzw. saugt, um die Inhaltsstoffe des abbrennenden Tabaks zu genießen.The coaxial cigarette 10 according to the invention has a coaxial tobacco rod to which a conventional, commercially available filter 15 is connected. The filter 15 is provided with ventilation openings 28. These ventilation openings are advantageously located in a filter covering paper, which is not explicitly shown and which also serves to fasten the filter to the tobacco rod. The filter wrapping paper covered by the filter paper is air-permeable or perforated like the paper. At the end 22 of the filter 15 there is the pull opening at which the consumer pulls or sucks in order to enjoy the ingredients of the burning tobacco.

Der koaxiale Tabakstrang 12 besteht aus einem Kern 14 und einer Peripherie bzw. einem Mantel 18. Der Kern 14 ist mit einer Umhüllung 16 versehen, die in der Regel aus Cigarettenpapier oder Tabakfolie besteht. Auch die Peripherie 18 ist von einer Umhüllung 20 umgeben, die ebenfalls aus Cigarettenpapier oder einer Tabakfolie besteht.The coaxial tobacco rod 12 consists of a core 14 and a periphery or jacket 18. The core 14 is provided with a covering 16, which generally consists of cigarette paper or tobacco foil. The periphery 18 is also surrounded by an envelope 20, which also consists of cigarette paper or a tobacco foil.

Erfindungsgemäß weisen der Kern 14 des Koaxialstrangs 12 und die Peripherie 18 des Koaxialstrangs 12 unterschiedliche Verhältnisse des Zugwiderstandes pro Längeneinheit zur Packungsdichte auf. So liegt dieses Verhältnis für den Kern 14 zwischen ungefähr 0,13 und ungefähr 0,27 mm WS cm²/mg. Dieses Verhältnis liegt für die Peripherie 18 des Tabakstrangs 12 zwischen ungefähr 0,07 und ungefähr 0,11 mm WS cm²/mg. Durch diese unterschiedlichen Werte in Kombination mit bestimmten Nikotingehalten der Mischungen im Kern und Peripherie ist es möglich, trotz Filterventilation eine Erniedrigung des Quotienten K/N zu verhindern, so daß dieser Quotient, im Vergleich zur filterlosen Cigarette, sogar erhöht werden kann. Dieses kann aus geschmacklichen Gründen erwünscht sein, wobei gleichzeitig unerwünschte Gasphasenbstandteile im Hauptrauch durch Ventilation vermindert werden.According to the invention, the core 14 of the coaxial strand 12 and the periphery 18 of the coaxial strand 12 have different ratios of the tensile resistance per unit length to the packing density. For core 14, this ratio is between about 0.13 and about 0.27 mm WS cm² / mg. For the periphery 18 of the tobacco rod 12, this ratio is between approximately 0.07 and approximately 0.11 mm WS cm 2 / mg. These different values in combination with certain nicotine contents of the mixtures in the core and periphery make it possible to prevent the quotient K / N from being lowered despite filter ventilation, so that this quotient can even be increased in comparison to the filterless cigarette. This can be desirable for reasons of taste, while at the same time undesirable gas phase constituents in the main smoke are reduced by ventilation.

Der Durchmesser der erfindungsgemäßen Koaxialcigarette 10 liegt in der Regel zwischen 7 und 9 mm, wobei Werte zwischen 7,2 und 8 mm bevorzugt werden. Der Strangkern 14 weist Durchmesser zwischen 3 und 6 mm, vorzugsweise zwischen 4,5 und 5,5 mm auf.The diameter of the coaxial cigarette 10 according to the invention is generally between 7 and 9 mm, values between 7.2 and 8 mm being preferred. The strand core 14 has a diameter between 3 and 6 mm, preferably between 4.5 and 5.5 mm.

Die Luftdurchlässigkeit der Umhüllung 16 des Strangkerns ist kleiner als 25 ISO-Einheiten, während die Luftdurchlässigkeit der Umhüllung 20 des Mantels 18 zwischen ungefähr 25 und ungefähr 59 ISO-Einheiten liegt.The air permeability of the sheath 16 of the strand core is less than 25 ISO units, while the air permeability of the sheath 20 of the jacket 18 is between approximately 25 and approximately 59 ISO units.

Der Filter 15 hat einen Zugwiderstand, der größer ist als ca. 15 mm WS. Die über vorzugsweise mehrere Ventilationsöffnungen 28 erzielte Ventilation liegt im Bereich von ca. 40 bis 80 %. Als Filter empfiehlt sich dabei insbesondere ein Celluloseacetatfilter mit einem Zugwiderstand zwischen 40 und 80 mm Wassersäule (geschlossen gemessen) und einem Ventilationsgrad zwischen ungefähr 40 und ungefähr 80 %.The filter 15 has a tensile resistance that is greater than about 15 mm WS. The ventilation achieved via preferably a plurality of ventilation openings 28 is in the range from approximately 40 to 80%. A cellulose acetate filter with a tensile resistance between 40 and 80 mm water column (measured closed) and a degree of ventilation between approximately 40 and approximately 80% is particularly recommended as a filter.

Bei einer Koaxialcigarette 10 gemäß der vorliegenden Erfindung ergaben sich für die beiden zu unterscheidenden Fälle (A, B) die nachfolgenden Werte, wobei im Fall A der Quotient K/N ungefähr dem der filterlosen Cigarette entspricht, während er im Fall B deutlich größer ist:In the case of a coaxial cigarette 10 according to the present invention, the following values were obtained for the two cases (A, B) to be distinguished, in which case the quotient K / N roughly corresponds to that of the filterless cigarette, while in case B it is significantly larger:

Fall A: Bei einem Verhältnis des Zugwiderstandes zur Packungsdichte für den Kern 14 des Koaxialstranges 20 von 0,23 und für den Mantel 18 von 0,08 betrug der K/N-Wert 7,3, mit einem Mischungsnikotin-Gehalt im Kern 14 von 0,9 % und mit einem Mischungsnikotin-Gehalt im Mantel 18 von 4,5 %.Case A: With a ratio of tensile resistance to packing density for core 14 of coaxial strand 20 of 0.23 and for jacket 18 of 0.08, the K / N value was 7.3, with a mixture nicotine content in core 14 of 0.9% and with a mixture of nicotine in the jacket 18 of 4.5%.

Fall B: Bei einem Verhältnis des Zugwiderstandes zur Packungsdichte im Kern 14 von 0,17 und im Mantel 18 von 0,09 ergab sich ein K/N-Wert von 13,3 bei einem Mischungsnikotin-Gehalt im Kern 14 von 4,5 % und im Mantel 18 von 0,9 %.Case B: With a ratio of tensile resistance to packing density in the core 14 of 0.17 and in the jacket 18 of 0.09, a K / N value of 13.3 resulted with a mixture nicotine content in the core 14 of 4.5%. and in the jacket 18 of 0.9%.

Dabei wurde ein filterloser Koaxialstrang 12 mit einem K/N-Wert von 7,2 (Fall A) bzw. 8,6 (Fall B) verwendet, an den ein ventilierter Filter 15 mit einem Ventilationsgrad von etwa 75 % und einem Zugwiderstand von 70 mm WS (geschlossen gemessen) angesetzt wurde.A filterless coaxial line 12 with a K / N value of 7.2 (case A) or 8.6 (case B) was used, to which a ventilated filter 15 with a degree of ventilation of approximately 75% and a tensile resistance of 70 mm WS (measured closed) was used.

Verglichen mit dem K/N-Wert des Koaxialstranges ohne Filter ergibt sich also im Fall A praktisch keine Änderung (K/N = 7,3), wohingegen im Fall B eine deutliche Erhöhung festzustellen ist (K/N = 13,3 verglichen mit K/N = 8,6 für den filterlosen Koaxialstrang). In beiden Fällen führt die Filterventilation zu einer überproportionalen Verminderung unerwünschter Gasphasenbestandteile im Hauptrauch, wie in der zitierten Literaturstelle beschrieben.Compared to the K / N value of the coaxial line without filter, there is practically no change in case A (K / N = 7.3), whereas in case B there is a significant increase (K / N = 13.3 compared to K / N = 8.6 for the filterless coaxial line). In both cases, filter ventilation leads to a disproportionate reduction in unwanted gas phase components in the main smoke, as described in the cited literature reference.

Claims (6)

Koaxialcigarette mit a) einem koaxialen Strang, wobei der Kern des Stranges aus einer anderen Mischung aus einem weitgehend rückstandsfrei verglimmenden Material, insbesondere Tabakmaterial, als die Peripherie des Stranges besteht, b) einer Umhüllung des Strangkerns aus Cigarettenpapier oder Tabakfolie, c) einer Umhüllung der Strangperipherie aus Cigarettenpapier oder Tabakfolie, und d) einem Filtermundstück,

dadurch gekennzeichnet,

 e) daß das Verhältnis des Zugwiderstandes des Kerns (14) pro Längeneinheit zu dessen Packungsdichte im Bereich von ca. 0,13 bis ca. 0,27 mm WS cm²/mg liegt (gemessen bei luftundurchlässiger Umhüllung und einem Durchfluß von 17,5 ml/s); f) daß das Verhältnis des Zugwiderstandes der Peripherie (18) pro Längeneinheit zu deren Packungsdichte im Bereich von ca. 0,07 bis ca. 0,11 mm WS cm²/mg liegt (gemessen bei luftundurchlässiger Umhüllung innen und außen, einem undurchlässigen Kern und einem Durchfluß von 17,5 ml/s); g) daß das Filtermundstück ein konventioneller Filter (15), vorzugsweise vom ventilierten Typ ist; und h) daß der Nikotingehalt der Mischung des Kerns (14) größer als 3 Gew.-% und der Nikotingehalt der Mischung der Peripherie (18) des Stranges kleiner als 1,1 Gew.-% ist. Coaxial cigarette with a) a coaxial strand, the core of the strand consisting of a different mixture of a largely residue-free smoldering material, in particular tobacco material, than the periphery of the strand, b) a wrapping of the core of cigarette paper or tobacco foil, (c) a wrapping of the cigarette paper or tobacco foil periphery, and d) a filter mouthpiece,

characterized,

e) that the ratio of the tensile resistance of the core (14) per unit length to its packing density is in the range of about 0.13 to about 0.27 mm WS cm² / mg (measured with an air-impermeable coating and a flow of 17.5 ml / s); f) that the ratio of the tensile resistance of the periphery (18) per unit length to its packing density is in the range of about 0.07 to about 0.11 mm WS cm² / mg (measured with an airtight envelope inside and outside, an impermeable core and a flow of 17.5 ml / s); g) that the filter mouthpiece is a conventional filter (15), preferably of the ventilated type; and h) that the nicotine content of the mixture of the core (14) is greater than 3% by weight and the nicotine content of the mixture of the periphery (18) of the strand is less than 1.1% by weight. Koaxialcigarette mit a) einem koaxialen Strang, wobei der Kern des Stranges aus einer anderen Mischung aus einem weitgehend rückstandsfrei verglimmenden Material, insbesondere Tabakmaterial, als die Peripherie des Stranges besteht, b) einer Umhüllung des Strangkerns aus Cigarettenpapier oder Tabakfolie, c) einer Umhüllung der Strangperipherie aus Cigarettenpapier oder Tabakfolie, und d) einem Filtermundstück,

dadurch gekennzeichnet,

 e) daß das Verhältnis des Zugwiderstandes des Kerns (14) pro Längeneinheit zu dessen Packungsdichte im Bereich von ca. 0,13 bis ca. 0,27 mm WS cm²/mg liegt (gemessen bei luftundurchlässiger Umhüllung und einem Durchfluß von 17,5 ml/s); f) daß das Verhältnis des Zugwiderstandes der Peripherie (18) pro Längeneinheit zu deren Packungsdichte im Bereich von ca. 0,07 bis ca. 0,11 mm WS cm²/mg liegt (gemessen bei luftundurchlässiger Umhüllung innen und außen, einem undurchlässigen Kern und einem Durchfluß von 17,5 ml/s); g) daß das Filtermundstück ein konventioneller Filter (15), vorzugsweise vom ventilierten Typ ist; und h) daß der Nikotingehalt der Mischung des Kerns (14) kleiner als 1,1 Gew.-% und der Nikotingehalt der Mischung der Peripherie (18) des Stranges größer als 3 Gew.-% ist. Coaxial cigarette with a) a coaxial strand, the core of the strand consisting of a different mixture of a largely residue-free smoldering material, in particular tobacco material, than the periphery of the strand, b) a wrapping of the core of cigarette paper or tobacco foil, (c) a wrapping of the cigarette paper or tobacco foil periphery, and d) a filter mouthpiece,

characterized,

e) that the ratio of the tensile resistance of the core (14) per unit length to its packing density is in the range from about 0.13 to about 0.27 mm WS cm² / mg (measured at air-impermeable coating and a flow of 17.5 ml / s); f) that the ratio of the tensile resistance of the periphery (18) per unit length to its packing density is in the range of about 0.07 to about 0.11 mm WS cm² / mg (measured with an airtight envelope inside and outside, an impermeable core and a flow of 17.5 ml / s); g) that the filter mouthpiece is a conventional filter (15), preferably of the ventilated type; and h) that the nicotine content of the mixture of the core (14) is less than 1.1% by weight and the nicotine content of the mixture of the periphery (18) of the strand is greater than 3% by weight. Koaxialcigarette nach einem der Ansprüche 1 oder 2, dadurch gekennzeichnet, daß der Filter (15) einen Zugwiderstand hat, der größer ist als 15 mm WS.Coaxial cigarette according to one of claims 1 or 2, characterized in that the filter (15) has a tensile resistance which is greater than 15 mm WS. Koaxialcigarette nach einem der Ansprüche 1 oder 2 bis 3, dadurch gekennzeichnet, daß der Filter mit einer Ventilationszone (28) versehen ist.Coaxial cigarette according to one of claims 1 or 2 to 3, characterized in that the filter is provided with a ventilation zone (28). Koaxialcigarette nach einem der Ansprüche 1 oder 2 bis 4, dadurch gekennzeichnet, daß der Filter (15) mit einer Ventilationszone (28) versehen ist, die bei gegebenem Zugwiderstand des Koaxialstranges (12) einen Ventilationsgrad im Bereich von etwa 40 bis 80 % aufweist.Coaxial cigarette according to one of claims 1 or 2 to 4, characterized in that the filter (15) is provided with a ventilation zone (28) which, given the tensile resistance of the coaxial line (12), has a degree of ventilation in the range of approximately 40 to 80%. Koaxialcigarette nach einem der Ansprüche 1 oder 2 bis 5, dadurch gekennzeichnet, daß der Filter (15) ein Celluloseacetatfilter ist, der einen Zugwiderstand zwischen 40 und 80 mm WS und/oder einen Ventilationsgrad zwischen etwa 40 und 80 % aufweist.Coaxial cigarette according to one of Claims 1 or 2 to 5, characterized in that the filter (15) is a cellulose acetate filter which has a tensile resistance of between 40 and 80 mm WS and / or a degree of ventilation between approximately 40 and 80%.
EP92103690A 1991-03-08 1992-03-04 Coaxial cigarette Expired - Lifetime EP0503461B1 (en)

Applications Claiming Priority (2)

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DE4107522A DE4107522C2 (en) 1991-03-08 1991-03-08 Coaxial cigarette
DE4107522 1991-03-08

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EP0503461A1 true EP0503461A1 (en) 1992-09-16
EP0503461B1 EP0503461B1 (en) 1994-10-05

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US (1) US5388596A (en)
EP (1) EP0503461B1 (en)
AT (1) ATE112463T1 (en)
CA (1) CA2062198A1 (en)
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HK (1) HK1005841A1 (en)

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO1998032345A1 (en) * 1997-01-28 1998-07-30 British American Tobacco (Investments) Limited Smoking articles
EP0880904A1 (en) * 1997-05-30 1998-12-02 British-American Tobacco (Germany) GmbH Ultra-light coaxial cigarette with a multi-section filter
WO2007069091A2 (en) * 2005-12-12 2007-06-21 Philip Morris Products S.A. Smoking article with coaxial tobacco rod
EP3245884A1 (en) 2016-05-18 2017-11-22 G.D. S.p.A Unit and method for forming a coaxial stream in a machine for making coaxial cigarettes

Families Citing this family (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0693258B1 (en) * 1994-07-19 1999-06-02 British-American Tobacco (Germany) GmbH Tobacco cartridge
DE19718296B4 (en) * 1997-04-30 2006-06-29 British American Tobacco (Germany) Gmbh Ventilated filter cigarette with a coaxial filter element
GB2368771A (en) * 2000-11-09 2002-05-15 Patricia Ann Parker Cigarette
GB201712380D0 (en) 2017-08-01 2017-09-13 British American Tobacco Investments Ltd A modular tobacco industry product
US11013267B2 (en) 2017-09-22 2021-05-25 Altria Client Services Llc Non-combustible tobacco vaping insert, and a cartridge containing the non-combustible tobacco vaping insert

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3743597C1 (en) * 1987-12-22 1989-02-16 Bat Cigarettenfab Gmbh Coaxial cigarette
EP0365882A1 (en) * 1988-10-24 1990-05-02 British-American Tobacco (Germany) GmbH Coaxial cigarette
EP0378788A1 (en) * 1989-01-17 1990-07-25 B.A.T. Cigarettenfabriken GmbH Coaxial filter cigarette

Family Cites Families (13)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR998556A (en) * 1945-10-29 1952-01-21 Papeteries De Mauduit Sa Des Cigarette
US3260265A (en) * 1957-11-01 1966-07-12 Thomas H Oster Tobacco manufacture
FR1322254A (en) * 1962-02-14 1963-03-29 Double decker cigar and double decker cigarette
US3356094A (en) * 1965-09-22 1967-12-05 Battelle Memorial Institute Smoking devices
GB1086443A (en) * 1966-05-03 1967-10-11 James Alexander Everet Bell Cigarette
GB1228747A (en) * 1967-09-07 1971-04-15
US3612066A (en) * 1970-02-05 1971-10-12 Reynolds Tobacco Co R Denicotinizing process
US4219031A (en) * 1979-03-05 1980-08-26 Philip Morris Incorporated Smoking product having core of fibrillar carbonized matter
GB2070409A (en) * 1980-01-18 1981-09-09 British American Tobacco Co Filament, comprising smoke- modifying agent, in smoking article
GB8502651D0 (en) * 1985-02-01 1985-03-06 British American Tobacco Co Smoking articles
US4920990A (en) * 1988-11-23 1990-05-01 R. J. Reynolds Tobacco Company Cigarette
US4955397A (en) * 1989-07-10 1990-09-11 Brown & Williamson Tobacco Corporation Cigarette
US5025812A (en) * 1989-08-10 1991-06-25 R. J. Reynolds Tobacco Company Tobacco processing

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3743597C1 (en) * 1987-12-22 1989-02-16 Bat Cigarettenfab Gmbh Coaxial cigarette
EP0365882A1 (en) * 1988-10-24 1990-05-02 British-American Tobacco (Germany) GmbH Coaxial cigarette
EP0378788A1 (en) * 1989-01-17 1990-07-25 B.A.T. Cigarettenfabriken GmbH Coaxial filter cigarette

Cited By (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO1998032345A1 (en) * 1997-01-28 1998-07-30 British American Tobacco (Investments) Limited Smoking articles
US6257243B1 (en) 1997-01-28 2001-07-10 Brown & Williamson Tobacco Corporation Smoking articles
EP0880904A1 (en) * 1997-05-30 1998-12-02 British-American Tobacco (Germany) GmbH Ultra-light coaxial cigarette with a multi-section filter
US6089238A (en) * 1997-05-30 2000-07-18 Brown & Williamson Tobacco Corporation Ultralight coaxial cigarette including a multipart filter
WO2007069091A2 (en) * 2005-12-12 2007-06-21 Philip Morris Products S.A. Smoking article with coaxial tobacco rod
WO2007069091A3 (en) * 2005-12-12 2007-10-11 Philip Morris Prod Smoking article with coaxial tobacco rod
US8573230B2 (en) 2005-12-12 2013-11-05 Philip Morris Usa Inc. Smoking article with coaxial tobacco rod
EP3245884A1 (en) 2016-05-18 2017-11-22 G.D. S.p.A Unit and method for forming a coaxial stream in a machine for making coaxial cigarettes

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DE59200577D1 (en) 1994-11-10
EP0503461B1 (en) 1994-10-05
ATE112463T1 (en) 1994-10-15
DE4107522A1 (en) 1992-09-10
CA2062198A1 (en) 1992-09-09
DE4107522C2 (en) 1994-02-17
HK1005841A1 (en) 1999-01-29
US5388596A (en) 1995-02-14

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