EP1182940B1 - Ventilated filter cigarette - Google Patents

Ventilated filter cigarette Download PDF

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Publication number
EP1182940B1
EP1182940B1 EP00916882A EP00916882A EP1182940B1 EP 1182940 B1 EP1182940 B1 EP 1182940B1 EP 00916882 A EP00916882 A EP 00916882A EP 00916882 A EP00916882 A EP 00916882A EP 1182940 B1 EP1182940 B1 EP 1182940B1
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EP
European Patent Office
Prior art keywords
filter
ventilated
cigarette according
den
titre
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
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EP00916882A
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German (de)
French (fr)
Other versions
EP1182940A1 (en
Inventor
Paul-Georg Henning
Henning Seidel
Edgar Mentzel
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.)
Reemtsma Cigarettenfabriken GmbH
HF and PhF Reemtsma GmbH and Co
Original Assignee
Reemtsma Cigarettenfabriken GmbH
HF and PhF Reemtsma GmbH and Co
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Application filed by Reemtsma Cigarettenfabriken GmbH, HF and PhF Reemtsma GmbH and Co filed Critical Reemtsma Cigarettenfabriken GmbH
Priority to SI200030158T priority Critical patent/SI1182940T1/en
Publication of EP1182940A1 publication Critical patent/EP1182940A1/en
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Publication of EP1182940B1 publication Critical patent/EP1182940B1/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
    • A24D3/043—Tobacco smoke filters characterised by their shape or structure with ventilation means, e.g. air dilution
    • 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
    • A24D3/06—Use of materials for tobacco smoke filters
    • A24D3/08—Use of materials for tobacco smoke filters of organic materials as carrier or major constituent
    • A24D3/10—Use of materials for tobacco smoke filters of organic materials as carrier or major constituent of cellulose or cellulose derivatives
    • 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
    • A24D1/02—Cigars; Cigarettes with special covers
    • A24D1/027—Cigars; Cigarettes with special covers with ventilating means, e.g. perforations
    • 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
    • A24D3/06—Use of materials for tobacco smoke filters
    • A24D3/16—Use of materials for tobacco smoke filters of inorganic materials
    • A24D3/163—Carbon

Definitions

  • the invention relates to a ventilated filter cigarette, according to Preamble of claim 1.
  • a ventilated filter cigarette is in EP 0 875 160 A1 described, which has a filter part that has a coaxial Filter core and a filter jacket surrounding the coaxial filter core has.
  • Ventilation holes for introducing ventilation air into the Coat provided.
  • the design of the material specifications and the dimensioning of the individual elements of the tobacco rod and the filter are designed so that when the smoker covering the ventilation holes, the smoke in the manner of a Changeover valve essentially passed through the filter jacket is, while with uncovered ventilation holes the smoke mainly through the filter core of the coaxial filter part flows.
  • the aim of this development is therefore the smoke yield control quantitatively with different consumer behavior to be able, for example, to increase the condensate values minimize.
  • this smoke is an aerosol Mixture of air and liquid droplets. These can be from be different sizes, but what for that human eye is not recognizable.
  • the taste assessment of tobacco smoke by the Consumers i.e. the aroma quality or the intensity of the Flavor rate is from the smoke flow rate and of the droplet size and its distribution, which with the help of mobility analyzers or by selective collection and Sort measured by particle weight or particle size can be influenced.
  • the object of the invention is to provide a filter construction with which the distribution of the droplet size supplied to the smoker and the flow rate of the smoke can be controlled.
  • a filter cigarette is used to achieve this object with the features of claim 1.
  • the surface of the core in the mouth-side filter part is impermeable or made impermeable, a Cross flow of the main flow smoke can be avoided.
  • the solution according to the invention has a filter construction guided, which acts in several stages:
  • the tobacco rod is turned Filter part on a very short distance the condensate and Nicotine levels set.
  • the second stage there is a Reduction of the filter diameter used by the main stream smoke, what the smoke in this area is about three times Speed accelerates.
  • Such a filter construction leads to a significant increase in aroma with low condensate values compared to a conventional filter. It has namely shown that both the smoke composition, as well the average droplet size due to the change in flow velocity be influenced and that Aroma impression and thus the taste at significantly higher Flow rates can be increased.
  • the drawing shows a schematic representation of a Filter cigarette with a tobacco rod 6 and a filter 7, the arranged in a colinear manner one behind the other and through a wrapping paper 8 are connected to each other.
  • the tobacco rod is between 55 and 75 mm long, while the Length of the filter is 21 to 27 mm.
  • the wrapping paper 8 covers the interface between the filter 7 and the String of tobacco 6 about 2 to 5 mm.
  • filter materials for the Filters 7 come sheet-like, fibrous or granular filter materials in question, such as cellulose, Cellulose esters, preferably cellulose acetate, meltblown filter material e.g. manufactured according to WO97 / 33026, airlaid filter material e.g. produced according to US 4,375,447, with additives removable filter materials, tobacco, other easily rotten Filter materials or thermoplastic filter fibers.
  • additives can be by sprinkling or spraying on the filter materials, e.g. Fibers, or by direct Injection into the strand of material.
  • Possible additives for the filter material are: Flavorings, acids or bases in suspended or dissolved form, or selectively acting adsorbents such as activated carbon or SiO2.
  • the pH values of the particle spectra can be influenced by adding acids or bases.
  • additives with a selective retention effect are organic acids and their salts, metals and metal oxides, Nitrogen components, ion exchange systems (e.g. zeolites), Alcohols, polyphenols and porphyrin derivatives.
  • the tobacco rod 6 is initially connected to a tobacco rod side Filter part 3 in the form of a so-called monofilter to which the mouth facing away from the tobacco rod 6 end Connects filter part 4 in the form of a coaxial filter.
  • the monofilter forming the filter part 3 on the tobacco rod side from one of the filter materials mentioned above, preferably from Cellulose acetate with a single titer of 2.50 den and one Total titre of 35,000 deniers produced and possibly with Activated carbon added.
  • the outside diameter of the filter part 3 on the tobacco rod side is 7.8 mm in one embodiment, its length makes 13.0 mm out.
  • the pressure drop in the tobacco rod-side filter part 3 should for example 30 to 50 mmWS, preferably 42 mmWS.
  • Ventilation means Exclusively in the area of the filter part 3 on the tobacco rod side is the wrapping paper 8 with ventilation holes 5 as Ventilation means provided in the form of 1 to 3 rows, preferably 2 rows of holes around the filter 7 are arranged in the area of the mouth-side filter part 4 the wrapping paper 8, however, completely impermeable.
  • Ventilation holes 5 becomes ventilation air in the filter 7 sucked, which leads to the fact that already in the area of tobacco rod-side filter part 3 the condensate and Nicotine levels of that supplied from the tobacco rod 6 Main stream smoke can be reduced.
  • Ventilation means are cannulas or material savings.
  • the mouth-side filter part 4 forming a coaxial filter has a core 1 and a jacket 2 coaxially surrounding the core 1 on.
  • the pressure drop of the core can be between 10 and 50 mmWS.
  • the jacket is designed so that its pressure drop at least by factor 2 is larger than that of the core.
  • the coat can also be impervious to smoke.
  • the core 1 had a diameter of 4.0 mm and a length of 8.0 mm. In one embodiment it was made from cellulose acetate with a single titer of 6.0 den and a total titer of 17,000 den. The train resistance or pressure drop of the Kerns 1 was 20 mmWS.
  • the jacket 2 coaxially surrounding the core 1 had one Inner diameter of 4.0 mm and an outer diameter of 7.8 mm with a length of 8.0 mm.
  • As material Cellulose acetate with a single titer of 2.1 den and one Total titer of 55,000 denied, resulting in a pressure drop led by 120 mmWS.
  • the coaxial filter had a length of 8.0 mm with a diameter of 7.8 mm.
  • Possible areas for other embodiments are: For the core a single titer in the range from 3.0 to 8.0 den, preferably 6.0 den and a total titer in the range of 15,000 up to 50,000 den, preferably 17,000 den.
  • the range for the tobacco rod-side single titer is 1.5 to 5 den and for the total titer 15000 to 60,000 den.
  • filter specification Kem coat string-side filter part material
  • CA CA CA Single / total fiber specification denier 6.00y / 17,000 2.10y / 55,000 2.50y / 35,000 diameter mm 4.0 Outside 7.8 inside 4.0 7.8 Cross-sectional area A mm 2 12.6 35.2 47.8 Cross-sectional area A % 26.4 73.6 100 Long mm 8.0 8.0 13.0 pressure drop mmCE 20 120 42 Pressure drop ⁇ P % 16.7 83.3 - Flow S S 100- ⁇ P % 83.3 16.7 100 Factor S / A 3.2 02 1.0

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  • Chemical & Material Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Materials Engineering (AREA)
  • Inorganic Chemistry (AREA)
  • Cigarettes, Filters, And Manufacturing Of Filters (AREA)

Abstract

The invention relates to a ventilated filter cigarette, comprising a sleeved tobacco rod and a filter (7). Said filter consists of two filter sections (3, 4) and has ventilation elements. Ventilation elements are located in the area of the filter section (3) on the tobacco-rod side. In addition, the filter section (3) on the tobacco-rod side consists of a single filter segment, whereas the filter section (4) on the mouth side consists of a two-part filter segment, comprising a core (1) and a sleeve (2). The latter filter segment forms a coaxial filter part or coaxial filter.

Description

Die Erfindung betrifft eine ventilierte Filtercigarette, gemäß Oberbegriffs des Patentanspruchs 1.The invention relates to a ventilated filter cigarette, according to Preamble of claim 1.

In der EP 0 875 160 Al ist eine ventilierte Filtercigarette beschrieben, die ein Filterteil aufweist, das einen koaxialen Filterkern und einen den koaxialen Filterkern umgebenden Filtermantel besitzt. Im Bereich dieses koaxialen Filterteils sind Ventilationsiöcher zum Einleiten von Ventilationsluft in den Mantel vorgesehen. Die Ausgestaltung der Materialspezifikationen und die Dimensionierung der Einzelelemente des Tabakstrangs sowie des Filters sind so ausgelegt, daß dann, wenn der Raucher die Ventilationslöcher abdeckt, der Rauch in der Art eines Umschaltventils im wesentlichen durch den Filtermantel geleitet wird, während bei unabgedeckten Ventilationslöchern der Rauch hauptsächlich durch den Filterkern des koaxialen Filterteils strömt. Ziel dieser Entwicklung ist es also, die Rauchausbeute bei unterschiedlichem Konsumentenverhalten quantitativ steuern zu können, beispielsweise eine Erhöhung der Kondensatwerte zu minimieren.A ventilated filter cigarette is in EP 0 875 160 A1 described, which has a filter part that has a coaxial Filter core and a filter jacket surrounding the coaxial filter core has. In the area of this coaxial filter part Ventilation holes for introducing ventilation air into the Coat provided. The design of the material specifications and the dimensioning of the individual elements of the tobacco rod and the filter are designed so that when the smoker covering the ventilation holes, the smoke in the manner of a Changeover valve essentially passed through the filter jacket is, while with uncovered ventilation holes the smoke mainly through the filter core of the coaxial filter part flows. The aim of this development is therefore the smoke yield control quantitatively with different consumer behavior to be able, for example, to increase the condensate values minimize.

Dieser Rauch ist physikalisch gesehen ein Aerosol, also ein Gemisch aus Luft und Flüssigkeitströpfchen. Diese können von deutlich unterschiedlicher Größe sein, was aber für das menschliche Auge nicht erkennbar ist.Physically speaking, this smoke is an aerosol Mixture of air and liquid droplets. These can be from be different sizes, but what for that human eye is not recognizable.

Die geschmackliche Bewertung des Tabakrauches durch den Konsumenten, also die Aromaqualität bzw. die Intensität des Geschmackeindruckes wird von der Rauchstromgeschwindigkeit und von der Tröpfchengröße und deren Verteilung, welche mit Hilfe von Mobilitätsanalysatoren oder durch selektives Sammeln und Sortieren nach Partikelgewicht oder Partikelgröße gemessen werden können, beeinflußt.The taste assessment of tobacco smoke by the Consumers, i.e. the aroma quality or the intensity of the Flavor rate is from the smoke flow rate and of the droplet size and its distribution, which with the help of mobility analyzers or by selective collection and Sort measured by particle weight or particle size can be influenced.

Die Aufgabe der Erfindung besteht darin, eine Filterkonstruktion zu schaffen, mit der die dem Raucher zugeführte Verteilung der Tröpfchengröße und die Strömungsgeschwindigkeit des Rauchs steuerbar sind.The object of the invention is to provide a filter construction with which the distribution of the droplet size supplied to the smoker and the flow rate of the smoke can be controlled.

Zur Lösung dieser Aufgabe dient eine Filtercigarette mit den Merkmalen des Patentanspruchs 1.A filter cigarette is used to achieve this object with the features of claim 1.

Wenn die Oberfläche des Kerns im mundseitigen Filterteil undurchlässig umhüllt oder undurchlässig gemacht ist, kann eine Querströmung des Hauptstromrauches vermieden werden.If the surface of the core in the mouth-side filter part is impermeable or made impermeable, a Cross flow of the main flow smoke can be avoided.

Dadurch wird gegenüber dem Stand der Technik eine wesentliche Verbesserung des Geschmacks erzielt.This makes it essential compared to the prior art Improved taste.

Die erfindungsgemäße Lösung hat zu einer Filterkonstruktion geführt, die mehrstufig wirkt:The solution according to the invention has a filter construction guided, which acts in several stages:

In der ersten Stufe werden in dem dem Tabakstrang zugewandten Filterteil auf einer sehr kurzen Strecke die Kondensat- und Nikotinwerte eingestellt. In der zweiten Stufe erfolgt eine Verringerung des vom Hauptstromrauch genutzten Filterdurchmessers, was den Rauch in diesem Bereich auf die etwa dreifache Geschwindigkeit beschleunigt. Eine derartige Filterkonstruktion führt bei geringen Kondensatwerten zu einer deutlichen Aromasteigerung gegenüber einem herkömmlichen Filter. Es hat sich nämlich gezeigt, daß sowohl die Rauchzusammensetzung, als auch die mittlere Tröpfchengröße durch die Änderung der Strömungsgeschwindigkeit beeinflußt werden und daß sich so der Aromaeindruck und damit der Geschmack bei deutlich höheren Durchströmgeschwindigkeiten steigern läßt.In the first stage, the tobacco rod is turned Filter part on a very short distance the condensate and Nicotine levels set. In the second stage there is a Reduction of the filter diameter used by the main stream smoke, what the smoke in this area is about three times Speed accelerates. Such a filter construction leads to a significant increase in aroma with low condensate values compared to a conventional filter. It has namely shown that both the smoke composition, as well the average droplet size due to the change in flow velocity be influenced and that Aroma impression and thus the taste at significantly higher Flow rates can be increased.

Da bei der erfindungsgemäßen Cigarette der Zugwiderstand und die Retention entkoppelt sind, läßt sich außerdem eine für den Raucher sehr angenehme Zügigkeit erreichen. Since the draw resistance and the Retention are decoupled, can also be one for the Reach smokers very comfortably.

Die Erfindung wird nun anhand einer schematischen Zeichnung näher erläutert:The invention will now be explained in more detail with reference to a schematic drawing :

Die Zeichnung zeigt in schematischer Darstellung eine Filtercigarette mit einem Tabakstrang 6 und einem Filter 7, die in üblicher Weise kolinear hintereinander angeordnet und durch ein Umwickelpapier 8 miteinander verbunden sind. Üblicherweise ist der Tabakstrang zwischen 55 und 75 mm lang, während die Länge des Filters 21 bis 27 mm beträgt. Das Umwickelpapier 8 überdeckt die Schnittstelle zwischen dem Filter 7 und dem Tabakstrang 6 etwa 2 bis 5 mm. Als Filtermaterialien für den Filter 7 kommen flächenförmige, faserförmige oder granulatförmige Filtermaterialien in Frage, wie Cellulose, Celluloseester, vorzugsweise Celluloseacetat, Meltblown-Filtermaterial z.B. hergestellt nach WO97/33026, Airlaid-Filtermaterial z.B. hergestellt nach US 4,375,447, mit Additiven versetzbare Filtermaterialien, Tabak, andere leicht verrottbare Filtermaterialien oder thermoplastische Filterfasern.The drawing shows a schematic representation of a Filter cigarette with a tobacco rod 6 and a filter 7, the arranged in a colinear manner one behind the other and through a wrapping paper 8 are connected to each other. Usually the tobacco rod is between 55 and 75 mm long, while the Length of the filter is 21 to 27 mm. The wrapping paper 8 covers the interface between the filter 7 and the String of tobacco 6 about 2 to 5 mm. As filter materials for the Filters 7 come sheet-like, fibrous or granular filter materials in question, such as cellulose, Cellulose esters, preferably cellulose acetate, meltblown filter material e.g. manufactured according to WO97 / 33026, airlaid filter material e.g. produced according to US 4,375,447, with additives removable filter materials, tobacco, other easily rotten Filter materials or thermoplastic filter fibers.

Die Zugabe von Additiven kann durch Streuen oder Aufsprühen auf die Filtermaterialien, z.B. Fasern, oder aber durch direkte Injektion in den Materialstrang erfolgen.The addition of additives can be by sprinkling or spraying on the filter materials, e.g. Fibers, or by direct Injection into the strand of material.

Als Additive für das Filtermaterial kommen in Frage:
Aromastoffe, Säuren oder Basen in suspendierter oder gelöster Form, oder selektiv wirkende Adsorbentien wie Aktivkohle oder SiO2. Durch die Zugabe von Säuren oder Basen lassen sich die pH-Werte der Partikelspektren beeinflussen.Possible additives for the filter material are:
Flavorings, acids or bases in suspended or dissolved form, or selectively acting adsorbents such as activated carbon or SiO2. The pH values of the particle spectra can be influenced by adding acids or bases.

Weitere Additive mit selektiver Retentionswirkung sind organische Säuren und deren Salze, Metalle und Metalloxide, Stickstoffkomponenten, Ionenaustauschersysteme (z.B. Zeolithe), Alkohole, Polyphenole und Porphyrinderivate.Other additives with a selective retention effect are organic acids and their salts, metals and metal oxides, Nitrogen components, ion exchange systems (e.g. zeolites), Alcohols, polyphenols and porphyrin derivatives.

An den Tabakstrang 6 schließt zunächst ein tabakstrangseitiges Filterteil 3 in Form eines sogenannten Monofilters an, an das an dem vom Tabakstrang 6 abgewandten Ende ein mundseitiges Filterteil 4 in Form eines Koaxialfilters anschließt. The tobacco rod 6 is initially connected to a tobacco rod side Filter part 3 in the form of a so-called monofilter to which the mouth facing away from the tobacco rod 6 end Connects filter part 4 in the form of a coaxial filter.

Der das tabakstrangseitige Filterteil 3 bildende Monofilter ist aus einem der oben erwähnten Filtermaterialien, vorzugsweise aus Celluloseacetat mit einem Einzeltiter von 2,50 den und einem Gesamttiter von 35.000 den hergestellt und gegebenenfalls mit Aktivkohle versetzt.The monofilter forming the filter part 3 on the tobacco rod side from one of the filter materials mentioned above, preferably from Cellulose acetate with a single titer of 2.50 den and one Total titre of 35,000 deniers produced and possibly with Activated carbon added.

Der Außendurchmesser des tabakstrangseitigen Filterteils 3 beträgt in einer Ausführungsform 7,8 mm, seine Länge macht 13,0 mm aus. Der Druckabfall im tabakstrangseitigen Filterteil 3 soll beispielsweise 30 bis 50 mmWS, vorzugsweise 42 mmWS betragen.The outside diameter of the filter part 3 on the tobacco rod side is 7.8 mm in one embodiment, its length makes 13.0 mm out. The pressure drop in the tobacco rod-side filter part 3 should for example 30 to 50 mmWS, preferably 42 mmWS.

Ausschließlich im Bereich des tabakstrangseitigen Filterteils 3 ist das Umwickelpapier 8 mit Ventilationslöchern 5 als Ventilationsmitteln versehen, die in Form von 1 bis 3 Reihen, vorzugsweise 2 Reihen von Löchern rund um den Filter 7 angeordnet sind, im Bereich des mundseitigen Filterteils 4 ist das Umwickelpapier 8 hingegen vollständig undurchlässig. Durch die Ventilationslöcher 5 wird Ventilationsluft in den Filter 7 gesaugt, was dazu führt, daß schon im Bereich des tabakstrangseitigen Filterteils 3 die Kondensat- und Nikotinwerte des aus dem Tabakstrang 6 zugeführten Hauptstromrauchs reduziert werden. Es ist dem Fachmann bekannt, wie Ventilationslöcher herzustellen sind, beispielsweise auf mechanischem oder elektrostatischem Wege oder durch Laserperforierungen. Andere ebenfalls bekannte Ventilationsmittel sind Kanülen oder Materialeinsparungen.Exclusively in the area of the filter part 3 on the tobacco rod side is the wrapping paper 8 with ventilation holes 5 as Ventilation means provided in the form of 1 to 3 rows, preferably 2 rows of holes around the filter 7 are arranged in the area of the mouth-side filter part 4 the wrapping paper 8, however, completely impermeable. By the ventilation holes 5 becomes ventilation air in the filter 7 sucked, which leads to the fact that already in the area of tobacco rod-side filter part 3 the condensate and Nicotine levels of that supplied from the tobacco rod 6 Main stream smoke can be reduced. It is known to the person skilled in the art how to make ventilation holes, for example mechanically or electrostatically or by Laser perforations. Others also known Ventilation means are cannulas or material savings.

Das einen Koaxialfilter bildende mundseitige Filterteil 4 weist einen Kern 1 und einen den Kern 1 koaxial umgebenden Mantel 2 auf.The mouth-side filter part 4 forming a coaxial filter has a core 1 and a jacket 2 coaxially surrounding the core 1 on.

Der Druckabfall des Kerns kann zwischen 10 und 50 mmWS liegen. Der Mantel ist so ausgestaltet, daß sein Druckabfall mindestens um den Fakcor 2 größer ist als der des Kerns. Der Mantel kann auch rauchundurchlässig sein. The pressure drop of the core can be between 10 and 50 mmWS. The jacket is designed so that its pressure drop at least by factor 2 is larger than that of the core. The coat can also be impervious to smoke.

Beispiel: Ausführung mit einem 21 mm langen Filter Example: Version with a 21 mm long filter

Der Kern 1 hatte einen Durchmesser von 4,0 mm bei einer Länge von 8,0 mm. Er war in einer Ausführungsform aus Celluloseacetat mit einem Einzeltiter von 6,0 den und einem Gesamttiter von 17.000 den hergestellt. Der Zugwiderstand oder Druckabfall des Kerns 1 lag bei 20 mmWS.The core 1 had a diameter of 4.0 mm and a length of 8.0 mm. In one embodiment it was made from cellulose acetate with a single titer of 6.0 den and a total titer of 17,000 den. The train resistance or pressure drop of the Kerns 1 was 20 mmWS.

Der den Kern 1 koaxial umgebende Mantel 2 hatte einen Innendurchmesser von 4,0 mm und einen Außendurchmesser von 7,8 mm bei einer Länge von ebenfalls 8,0 mm. Als Material wurde Celluloseacetat mit einem Einzeltiter von 2,1 den und einem Gesamttiter von 55.000 den verwendet, was zu einem Druckabfall von 120 mmWS führte.The jacket 2 coaxially surrounding the core 1 had one Inner diameter of 4.0 mm and an outer diameter of 7.8 mm with a length of 8.0 mm. As material Cellulose acetate with a single titer of 2.1 den and one Total titer of 55,000 denied, resulting in a pressure drop led by 120 mmWS.

In der Summe hatte der Koaxialfilter also eine Länge von 8,0 mm bei einem Durchmesser von 7,8 mm.In total, the coaxial filter had a length of 8.0 mm with a diameter of 7.8 mm.

Als Bereich für andere Ausführungsformen kommen in Frage: Für den Kern ein Einzeltiter im Bereich von 3,0 bis 8,0 den, vorzugsweise 6,0 den und ein Gesamttiter im Bereich von 15.000 bis 50.000 den, vorzugsweise 17.000 den. Für den Mantel ein Einzeltiter im Bereich von 1,5 bis 3,0 den, vorzugsweise 2,1 den und ein Gesamttiter im Bereich von 40.000 bis 75.000 den, vorzugsweise 55.000 den.Possible areas for other embodiments are: For the core a single titer in the range from 3.0 to 8.0 den, preferably 6.0 den and a total titer in the range of 15,000 up to 50,000 den, preferably 17,000 den. For the coat Individual titers in the range from 1.5 to 3.0 den, preferably 2.1 den and a total titre in the range of 40,000 to 75,000 den, preferably 55,000 den.

Der Bereich für den tabakstrangseitigen Einzeltiter beträgt 1,5 bis 5 den und für den Gesamttiter 15000 bis 60000 den. Filterspezifikation Kem Mantel strangseitiger Filterteil Material CA CA CA Einzel- /Gesamt-Faserspezifikation Denier 6,00y/ 17.000 2.10y / 55.000 2,50y / 35.000 Durchmesser mm 4,0 Außen 7,8
innen 4,0 7,8 Querschnittsfläche A mm2 12,6 35,2 47,8 Querschnittsfläche A % 26,4 73,6 100 Lange mm 8,0 8,0 13,0 Druckabfall mmWS 20 120 42 Druckabfall ΔP % 16,7 83,3 - Strömung S
S = 100-ΔP % 83,3 16,7 100 Faktor S/A 3,2 02 1,0 The range for the tobacco rod-side single titer is 1.5 to 5 den and for the total titer 15000 to 60,000 den. filter specification Kem coat string-side filter part material CA CA CA Single / total fiber specification denier 6.00y / 17,000 2.10y / 55,000 2.50y / 35,000 diameter mm 4.0 Outside 7.8
inside 4.0 7.8 Cross-sectional area A mm 2 12.6 35.2 47.8 Cross-sectional area A % 26.4 73.6 100 Long mm 8.0 8.0 13.0 pressure drop mmCE 20 120 42 Pressure drop ΔP % 16.7 83.3 - Flow S
S = 100-ΔP % 83.3 16.7 100 Factor S / A 3.2 02 1.0

Das obige Beispiel zeigt, daß gegenüber der Strömungsgeschwindigkeit im strangseitigen Filterteil eine etwa dreifache Erhöhung der Strömungsgeschwindigkeit im Kern erzielt wurde.The above example shows that versus flow rate in the string-side filter part about three times Increasing the flow velocity in the core was achieved.

Claims (12)

  1. A filter cigarette having a wrapped tobacco string and a filter (7) having a ventilation means, which consists of two filter sections (3, 4), wherein
    the ventilation means are located in the region of the filter section (3) on the tobacco-string side;
    the filter section (3) on the tobacco string side is a single-part filter section and the mouth-side filter section (4) is a coaxial filter section with a core (1) and a sleeve (2);
    wherein the pressure drop of the core (1) is less than the pressure drop of the sleeve (2).
  2. A ventilated filter cigarette according to Claim 1, wherein the filter section (3) on the tobacco string side is made from planiform, fibrous, granulate-shaped or decayable filter material.
  3. A ventilated filter cigarette according to Claim 2, wherein cellulose, cellulose ester, preferably cellulose acetate, melt-blown filter material, airlaid filter material, filter material which can be mixed with additives, tobacco, other easily decayable filter materials or thermoplastic filter fibres is used as filter material.
  4. A ventilated filter cigarette according to Claim 2 or 3, wherein the filter material is mixed with an additive.
  5. A ventilated filter cigarette according to Claim 4, wherein flavours, acids or bases in suspended or dissolved form, or selectively acting adsorbents such as activated carbon or SiO2 are used as additives.
  6. A ventilated filter cigarette according to one of Claims 1 to 5, wherein the core (I) of the mouth-side coaxial filter section (4) is made from coarse-titre fibre material, the value for the individual titre lying in the range of 3.0 to 8.0 den and the overall titre lying in the range of 15,000 to 50,000 den.
  7. A ventilated filter cigarette according to Claim 6, wherein the individual titre is 6.0 den and the overall titre 17,000 den.
  8. A ventilated filter cigarette according to one of Claims 1 to 5, wherein the sleeve (2) of the mouth-side coaxial filter section (4) made of fibre material lies with an individual titre in the range of 1.5 to 3.0 den and the overall titre lies in the range of 40,000 to 75,000.
  9. A ventilated filter cigarette according to Claim 8, wherein the individual titre is 2.1 den and the overall titre is about 55,000 den.
  10. A ventilated filter cigarette according to Claim 1, wherein the ratio of the pressure drop of the core (1) to that of the sleeve (2) is greater than 2.
  11. A ventilated filter cigarette according to Claim 10, wherein the ratio of the pressure drop of the core (1) to that of the sleeve (2) is about 6.
  12. A ventilated filter cigarette according to Claim 1, wherein the surface of the core is sheathed impermeably to air or is made impermeable to air.
EP00916882A 1999-05-27 2000-03-01 Ventilated filter cigarette Expired - Lifetime EP1182940B1 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
SI200030158T SI1182940T1 (en) 1999-05-27 2000-03-01 Ventilated filter cigarette

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
DE19925313 1999-05-27
DE19925313A DE19925313C2 (en) 1999-05-27 1999-05-27 Ventilated filter cigarette
PCT/EP2000/001724 WO2000072705A1 (en) 1999-05-27 2000-03-01 Ventilated filter cigarette

Publications (2)

Publication Number Publication Date
EP1182940A1 EP1182940A1 (en) 2002-03-06
EP1182940B1 true EP1182940B1 (en) 2003-05-28

Family

ID=7910042

Family Applications (1)

Application Number Title Priority Date Filing Date
EP00916882A Expired - Lifetime EP1182940B1 (en) 1999-05-27 2000-03-01 Ventilated filter cigarette

Country Status (21)

Country Link
EP (1) EP1182940B1 (en)
JP (1) JP2003500078A (en)
KR (1) KR20020020896A (en)
CN (1) CN1135942C (en)
AT (1) ATE241289T1 (en)
AU (1) AU3807400A (en)
BG (1) BG64188B1 (en)
CZ (1) CZ294432B6 (en)
DE (2) DE19925313C2 (en)
EA (1) EA002654B1 (en)
ES (1) ES2199807T3 (en)
HK (1) HK1047019B (en)
HU (1) HUP0201384A3 (en)
PL (1) PL204630B1 (en)
PT (1) PT1182940E (en)
SK (1) SK284470B6 (en)
TR (1) TR200103393T2 (en)
TW (1) TW505510B (en)
UA (1) UA71011C2 (en)
WO (1) WO2000072705A1 (en)
YU (1) YU49403B (en)

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Publication number Priority date Publication date Assignee Title
US11510434B2 (en) 2012-05-31 2022-11-29 Philip Morris Products S.A. Smoking article with concentric filter

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Publication number Priority date Publication date Assignee Title
DE10009829A1 (en) * 2000-03-01 2001-09-20 Reemtsma H F & Ph Filter cigarette has two part filter with ventilator, core, casing and length of tobacco.
US6883523B2 (en) * 2003-02-14 2005-04-26 Philip Morris Usa Inc. Cigarette having porous heat transfer tube
GB0713905D0 (en) 2007-07-17 2007-08-29 British American Tobacco Co Cellulose acetate thread in filter
KR101281808B1 (en) * 2010-06-28 2013-07-04 주식회사 케이티앤지 Coaxial cigarette filter and cigarette including the same
CN101999755A (en) * 2010-12-17 2011-04-06 南通烟滤嘴有限责任公司 Filter rod with coaxial paper cores
CN102247010B (en) * 2011-07-02 2013-08-21 云南瑞升烟草技术（集团）有限公司 Application of linear functional fiber material for tobacco
GB201219540D0 (en) * 2012-10-31 2012-12-12 British American Tobacco Co A filter for a smoking article
TWI468120B (en) * 2012-11-29 2015-01-11 Japan Tobacco Inc Method for manufacturing filter cigarette as well as filter and filter cigarette
WO2015181354A1 (en) 2014-05-30 2015-12-03 Philip Morris Products S.A. Smoking article with ventilated mouth end cavity
JP6613246B2 (en) * 2014-11-28 2019-11-27 株式会社ダイセル Tow band manufacturing device for cellulose acetate fiber for cigarette filter, tow band manufacturing method, and cigarette filter manufacturing method
GB201717567D0 (en) 2017-10-25 2017-12-06 British American Tobacco Investments Ltd A filter for a smoking article or an aerosol generating product
CN109924539B (en) * 2017-12-15 2021-07-13 湖南中烟工业有限责任公司 Forming paper capable of automatically regulating and controlling ventilation rate, filter tip, cigarette and preparation and application thereof

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WO1997005790A1 (en) * 1995-08-04 1997-02-20 Mitsubishi Rayon Co., Ltd. Filter medium and cigarette filter made with the use of the same
DE19718296B4 (en) * 1997-04-30 2006-06-29 British American Tobacco (Germany) Gmbh Ventilated filter cigarette with a coaxial filter element

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Publication number Priority date Publication date Assignee Title
US11510434B2 (en) 2012-05-31 2022-11-29 Philip Morris Products S.A. Smoking article with concentric filter

Also Published As

Publication number Publication date
PT1182940E (en) 2003-09-30
CZ20014245A3 (en) 2002-07-17
EP1182940A1 (en) 2002-03-06
AU3807400A (en) 2000-12-18
BG106261A (en) 2002-09-30
DE19925313C2 (en) 2002-04-11
EA200101254A1 (en) 2002-04-25
PL204630B1 (en) 2010-01-29
ES2199807T3 (en) 2004-03-01
WO2000072705A1 (en) 2000-12-07
TW505510B (en) 2002-10-11
PL352272A1 (en) 2003-08-11
CZ294432B6 (en) 2005-01-12
UA71011C2 (en) 2004-11-15
DE19925313A1 (en) 2000-12-07
CN1135942C (en) 2004-01-28
SK284470B6 (en) 2005-04-01
HUP0201384A2 (en) 2002-08-28
TR200103393T2 (en) 2002-05-21
YU49403B (en) 2005-11-28
YU83901A (en) 2003-10-31
HK1047019B (en) 2004-12-10
JP2003500078A (en) 2003-01-07
HUP0201384A3 (en) 2002-09-30
CN1354630A (en) 2002-06-19
DE50002368D1 (en) 2003-07-03
ATE241289T1 (en) 2003-06-15
SK17382001A3 (en) 2002-04-04
EA002654B1 (en) 2002-08-29
BG64188B1 (en) 2004-04-30
HK1047019A1 (en) 2003-02-07
KR20020020896A (en) 2002-03-16

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