WO2000072705A1 - Ventilated filter cigarette - Google Patents

Ventilated filter cigarette Download PDF

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Publication number
WO2000072705A1
WO2000072705A1 PCT/EP2000/001724 EP0001724W WO0072705A1 WO 2000072705 A1 WO2000072705 A1 WO 2000072705A1 EP 0001724 W EP0001724 W EP 0001724W WO 0072705 A1 WO0072705 A1 WO 0072705A1
Authority
WO
WIPO (PCT)
Prior art keywords
filter
ventilated
cigarette according
den
core
Prior art date
Application number
PCT/EP2000/001724
Other languages
German (de)
French (fr)
Inventor
Paul-Georg Henning
Henning Seidel
Edgar Mentzel
Original Assignee
Reemtsma Cigarettenfabriken Gmbh
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Priority to EP00916882A priority Critical patent/EP1182940B1/en
Priority to JP2000620826A priority patent/JP2003500078A/en
Priority to UA2001128960A priority patent/UA71011C2/en
Priority to KR1020017015219A priority patent/KR20020020896A/en
Priority to AT00916882T priority patent/ATE241289T1/en
Priority to SI200030158T priority patent/SI1182940T1/en
Priority to DE50002368T priority patent/DE50002368D1/en
Priority to SK1738-2001A priority patent/SK284470B6/en
Application filed by Reemtsma Cigarettenfabriken Gmbh filed Critical Reemtsma Cigarettenfabriken Gmbh
Priority to EA200101254A priority patent/EA002654B1/en
Priority to PL352272A priority patent/PL204630B1/en
Priority to AU38074/00A priority patent/AU3807400A/en
Publication of WO2000072705A1 publication Critical patent/WO2000072705A1/en
Priority to BG106261A priority patent/BG64188B1/en
Priority to HK02108819.0A priority patent/HK1047019B/en

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Classifications

    • A—HUMAN NECESSITIES
    • A24—TOBACCO; CIGARS; CIGARETTES; SIMULATED SMOKING DEVICES; SMOKERS' REQUISITES
    • A24D—CIGARS; CIGARETTES; TOBACCO SMOKE FILTERS; MOUTHPIECES FOR CIGARS OR CIGARETTES; MANUFACTURE OF TOBACCO SMOKE FILTERS OR MOUTHPIECES
    • 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 the preamble of patent claim 1.
  • EP 0 875 160 A1 describes a ventilated filter cigarette which has a filter part which has a coaxial filter core and a filter jacket which surrounds the coaxial filter core.
  • ventilation holes for introducing ventilation air into the jacket are 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 covers the ventilation holes, the smoke is essentially passed through the filter jacket in the manner of a changeover valve, while in the case of uncovered ventilation holes, the smoke mainly flows through the filter core of the coaxial filter part.
  • the aim of this development is to be able to quantitatively control the smoke yield with different consumer behavior, for example to minimize an increase in the condensate values.
  • this smoke is an aerosol, i.e. a mixture of air and liquid droplets. These can be of significantly different sizes, but this is not recognizable to the human eye.
  • the taste assessment of tobacco smoke by the consumer i.e. the aroma quality or the intensity of the taste impression, is measured by the smoke flow rate and by the droplet size and distribution, which are measured with the help of mobility analyzers or by selective collection and sorting 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 with the features of claim 1 is used to solve this problem.
  • the condensate and nicotine values are set over a very short distance in the filter section facing the tobacco rod.
  • the filter diameter used by the main flow smoke is reduced, which accelerates the smoke in this area to about three times the speed.
  • Such a filter construction leads to a significant increase in aroma compared to a conventional filter with low condensate values. It has been shown that both the smoke composition and the average droplet size are influenced by the change in the flow rate and that the aroma impression and thus the taste can be increased at significantly higher flow rates.
  • the drawing shows a schematic representation of a filter cigarette with a tobacco rod 6 and a filter 7, which are arranged in a colinear manner one behind the other and connected to one another by a wrapping paper 8.
  • the tobacco rod is usually 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 tobacco rod 6 about 2 to 5 mm.
  • Suitable filter materials for the filter 7 are sheet-like, fibrous or granular filter materials, such as cellulose, cellulose esters, preferably cellulose acetate, meltblown filters, e.g. manufactured according to WO97 / 33026, airlaid filter material e.g. manufactured according to US 4,375,447, additive filter materials, tobacco, other easily decomposable filter materials or thermoplastic filter fibers.
  • Additives can be added by sprinkling or spraying onto the filter materials, e.g. Fibers, or by direct injection into the material strand.
  • Possible additives for the filter material are: flavoring agents, acids or bases in suspended or dissolved form, or selectively acting adsorbents such as activated carbon or SiO 2.
  • 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 a mouth-side filter part 4 in the form of a coaxial filter is connected at the end facing away from the tobacco rod 6.
  • the monofilter forming the tobacco rod-side filter part 3 is made of one of the above-mentioned filter materials, preferably of cellulose acetate with a single titer of 2.50 den and a total titer of 35,000 den and optionally mixed with activated carbon.
  • the outside diameter of the filter part 3 on the tobacco rod side is 7.8 mm, and its length is 13.0 mm.
  • the pressure drop in the tobacco rod-side filter part 3 should be, for example, 30 to 50 mmWS, preferably 42 mmWS.
  • the wrapping paper 8 is provided with ventilation holes 5 as ventilation means, which are arranged in the form of 1 to 3 rows, preferably 2 rows of holes, around the filter 7, in the area of the mouth-end filter part 4 is the wrapping paper 8 however completely impermeable.
  • ventilation holes 5 ventilation air m is sucked into the filter 7, which leads to the fact that the condensate and nicotine values of the main flow smoke supplied from the tobacco rod 6 are reduced in the area of the filter part 3 on the tobacco rod side.
  • ventilation holes are to be produced, for example mechanically or electrostatically or by means of laser perforations.
  • Other also known 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.
  • the pressure drop of the core can be between 10 and 50 mmWS.
  • the jacket is designed so that its pressure drop is at least a factor of 2 greater than that of the core.
  • the coat can also be smoke-tight.
  • 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 denier and a total titer of 17,000 denier. The tensile resistance or pressure drop of core 1 was 20 mmWS.
  • the jacket 2 coaxially surrounding the core 1 had an inner diameter of 4.0 mm and an outer diameter of 7.8 mm with a length of likewise 8.0 mm.
  • the coaxial filter had a length of 8.0 mm with a diameter of 7.8 mm.
  • Possible ranges for other embodiments are: a single titer in the range from 3.0 to 8.0 den, preferably 6.0 den and a total titer in the range from 15,000 to 50,000 den, preferably 17,000 den, for the core.
  • 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.

Landscapes

  • 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

Ventilierte FiltercigaretteVentilated filter cigarette
Die Erfindung betrifft eine ventilierte Filtercigarette, gemäß Oberbegriffs des Patentanspruchs 1.The invention relates to a ventilated filter cigarette, according to the preamble of patent claim 1.
In der EP 0 875 160 AI 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 Ventilationslöcher zum Einleiten von Ventilationsluft m 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, wahrend bei unabgedeckten Ventilationslochern der Rauch hauptsachlich durch den Filterkern des koaxialen Filterteils strömt. Ziel dieser Entwicklung ist es also, die Rauchausbeute bei unterschiedlichem Konsumenrenverhalten quantitativ steuern zu können, beispielsweise eine Erhöhung der Kondensatwerte zu minimieren.EP 0 875 160 A1 describes a ventilated filter cigarette which has a filter part which has a coaxial filter core and a filter jacket which surrounds the coaxial filter core. In the area of this coaxial filter part, ventilation holes for introducing ventilation air into the jacket are 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 covers the ventilation holes, the smoke is essentially passed through the filter jacket in the manner of a changeover valve, while in the case of uncovered ventilation holes, the smoke mainly flows through the filter core of the coaxial filter part. The aim of this development is to be able to quantitatively control the smoke yield with different consumer behavior, for example to minimize an increase in the condensate values.
Dieser Rauch ist physikalisch gesehen ein Aerosol, also ein Gemisch aus Luft und Flussigkeitstropfchen. Diese können von deutlich unterschiedlicher Große sein, was aber für das menschliche Auge nicht erkennbar ist.Physically speaking, this smoke is an aerosol, i.e. a mixture of air and liquid droplets. These can be of significantly different sizes, but this is not recognizable to the human eye.
Die geschmackliche Bewertung des Tabakrauches durch den Konsumenten, also die Aromaqualltat bzw. die Intensität des Geschmackeindruckes wird von der Rauchstromgeschwindigkeit und von der Tropfchengroße und αeren Verteilung,- welche mit Hilfe von Mobilitatsanalysatoren oder durch selektives Sammeln und Sortieren nach Partikelgewicht oder Partikelgroße gemessen werden können, beeinflußt.The taste assessment of tobacco smoke by the consumer, i.e. the aroma quality or the intensity of the taste impression, is measured by the smoke flow rate and by the droplet size and distribution, which are measured with the help of mobility analyzers or by selective collection and sorting by particle weight or particle size can be influenced.
Die Aufgabe der Erfindung besteht darin, eine Filterkonstruktion zu schaffen, mit der die dem Raucher zugefuhrte Verteilung der Tropfchengroße und die Stromungsgeschwindigkeit 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 Losung dieser Aufgabe dient eine Filtercigarette mit den Merkmalen des Patentanspruchs 1.A filter cigarette with the features of claim 1 is used to solve this problem.
Wenn die Oberflache des Kerns im mundseitigen Filterteil undurchlässig umhüllt oder undurchlässig gemacht ist, kann eine Querstromung des Hauptstromrauches vermieden werden.If the surface of the core in the mouth-side filter part is covered or made impermeable, cross-flow of the main flow smoke can be avoided.
Dadurch wird gegenüber dem Stand der Technik eine wesentliche Verbesserung des Geschmacks erzielt.This results in a significant improvement in taste compared to the prior art.
Die erfmdungsgemaße Losung hat zu einer Filterkonstruktion gefuhrt, die mehrstufig wirkt:The solution according to the invention has led to a filter construction which acts in several stages:
In der ersten Stufe werden m 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 Filterdurch- messers, was den Rauch m diesem Bereich auf die etwa dreifache Geschwindigkeit beschleunigt. Eine derartige Filterkonstruktion fuhrt bei geringen Kondensatwerten zu einer deutlichen Aroma- steigerung gegenüber einem herkömmlichen Filter. Es hat sich nämlich gezeigt, daß sowohl die Rauchzusammensetzung, als auch die mittlere Tropfchengroße durch die Änderung der Stromungsgeschwindigkeit beeinflußt werden und daß sich so der Aromaeindruck und damit der Geschmack bei deutlich höheren Durchstromgeschwmd gkeiten steigern laßt.In the first stage, the condensate and nicotine values are set over a very short distance in the filter section facing the tobacco rod. In the second stage, the filter diameter used by the main flow smoke is reduced, which accelerates the smoke in this area to about three times the speed. Such a filter construction leads to a significant increase in aroma compared to a conventional filter with low condensate values. It has been shown that both the smoke composition and the average droplet size are influenced by the change in the flow rate and that the aroma impression and thus the taste can be increased at significantly higher flow rates.
Da bei der erfmdungsgemaßen Cigarette der Zugwiderstand und die Retention entkoppelt sind, laßt sich außerdem eine für den Raucher sehr angenehme Zugigkeit erreichen. Die Erfindung wird nun anhand einer schematischen Zeichnung näher erläutert:Since the draw resistance and the retention are decoupled in the case of the cigarette according to the invention, a draft which is very pleasant for the smoker can also be achieved. 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, faserförruige oder granulatförmige Filtermaterialien in Frage, wie Cellulose, Celluloseester, vorzugsweise Celluloseacetat, Meltblown- Filter aterial 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, which are arranged in a colinear manner one behind the other and connected to one another by a wrapping paper 8. The tobacco rod is usually 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 tobacco rod 6 about 2 to 5 mm. Suitable filter materials for the filter 7 are sheet-like, fibrous or granular filter materials, such as cellulose, cellulose esters, preferably cellulose acetate, meltblown filters, e.g. manufactured according to WO97 / 33026, airlaid filter material e.g. manufactured according to US 4,375,447, additive filter materials, tobacco, other easily decomposable 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.Additives can be added by sprinkling or spraying onto the filter materials, e.g. Fibers, or by direct injection into the material strand.
Als Additive für das Filtermaterial kommen in Frage: Aromastoffe, Säuren oder Basen in suspendierter oder gelöster Form, oder selektiv wirkende Adsorbentien wie Aktivkohle oder Si02. Durch die Zugabe von Säuren oder Basen lassen sich die pH- Werte der Partikelspektren beeinflussen.Possible additives for the filter material are: flavoring agents, acids or bases in suspended or dissolved form, or selectively acting adsorbents such as activated carbon or SiO 2. 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. 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 tobacco rod 6 is initially connected to a tobacco rod-side filter part 3 in the form of a so-called monofilter, to which a mouth-side filter part 4 in the form of a coaxial filter is connected at the end facing away from the tobacco rod 6. The monofilter forming the tobacco rod-side filter part 3 is made of one of the above-mentioned filter materials, preferably of cellulose acetate with a single titer of 2.50 den and a total titer of 35,000 den and optionally mixed with activated carbon.
Der Außendurchmesser des tabakstrangseitigen Filterteils 3 betragt in einer Ausfuhrungsform 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.In one embodiment, the outside diameter of the filter part 3 on the tobacco rod side is 7.8 mm, and its length is 13.0 mm. The pressure drop in the tobacco rod-side filter part 3 should be, for example, 30 to 50 mmWS, preferably 42 mmWS.
Ausschließlich im Bereich des tabakstrangseitigen Filterteils 3 ist das Umwickelpapier 8 mit Ventilationslochern 5 als Ventilationsmitteln versehen, die m Form von 1 bis 3 Reihen, vorzugsweise 2 Reihen von Lochern rund um den Filter 7 angeordnet sind, im Bereich des mundse tigen Filterteils 4 ist das Umwickelpapier 8 hingegen vollständig undurchlässig. Durch die Ventilationslöcher 5 wird Ventilationsluft m den Filter 7 gesaugt, was dazu fuhrt, daß schon im Bereich des tabakstrangseitigen Filterteils 3 die Kondensat- und Nikotinwerte des aus dem Tabakstrang 6 zugefuhrten 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 tobacco rod-side filter part 3, the wrapping paper 8 is provided with ventilation holes 5 as ventilation means, which are arranged in the form of 1 to 3 rows, preferably 2 rows of holes, around the filter 7, in the area of the mouth-end filter part 4 is the wrapping paper 8 however completely impermeable. Through the ventilation holes 5, ventilation air m is sucked into the filter 7, which leads to the fact that the condensate and nicotine values of the main flow smoke supplied from the tobacco rod 6 are reduced in the area of the filter part 3 on the tobacco rod side. It is known to the person skilled in the art how ventilation holes are to be produced, for example mechanically or electrostatically or by means of laser perforations. Other 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.
Der Druckabfall des Kerns kann zwischen 10 und 50 mmWS liegen. Der Mantel ist so ausgestaltet, daß sein Druckabfall mindestens um den Faktor 2 großer ist als der des Kerns. Der Mantel kann auch rauchundurchlassig sein. Beispiel : Ausführung mit einem 21 mm langen FilterThe pressure drop of the core can be between 10 and 50 mmWS. The jacket is designed so that its pressure drop is at least a factor of 2 greater than that of the core. The coat can also be smoke-tight. 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 denier and a total titer of 17,000 denier. The tensile resistance or pressure drop of core 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 an inner diameter of 4.0 mm and an outer diameter of 7.8 mm with a length of likewise 8.0 mm. Cellulose acetate with a single titer of 2.1 den and a total titer of 55,000 den was used as the material, which led to a pressure drop of 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 ranges for other embodiments are: a single titer in the range from 3.0 to 8.0 den, preferably 6.0 den and a total titer in the range from 15,000 to 50,000 den, preferably 17,000 den, for the core. For the jacket, a single titer in the range from 1.5 to 3.0 den, preferably 2.1 den and a total titer in the range from 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. 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.
Figure imgf000008_0001
Figure imgf000008_0001
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 an approximately three-fold increase in the flow speed in the core was achieved compared to the flow speed in the strand-side filter part.

Claims

Patentansprüche claims
Filtercigarette mit umhüllten. Tabakstrang und mit einem Ventilationsmittel aufweisenden Filter (7), der aus zwei Filterteilen (3, 4) besteht, dadurch gekennzeichnet, daß die Ventilationsmittel im Bereich des tabakstrangseitigenFilter cigarette with enveloped. Tobacco rod and with a filter (7) having ventilation means, which consists of two filter parts (3, 4), characterized in that the ventilation means in the area of the tobacco rod side
Filterteils (3) angeordnet sind; das tabakstrangseitige Filterteil (3) ein einteiligesFilter part (3) are arranged; the tobacco rod-side filter part (3) is a one-piece
Filterteil und das mundseitige Filterteil (4) ein koaxialen Filterteil mit einem Kern (1) und einem MantelFilter part and the mouth-side filter part (4) a coaxial filter part with a core (1) and a jacket
(2) ist; wobei der Druckabfall des Kerns (1) kleiner als der(2) is; wherein the pressure drop of the core (1) is less than that
Druckabfall des Mantels (2) ist.Pressure drop of the jacket (2) is.
2. Ventilierte Filtercigarette nach Anspruch 1, dadurch gekennzeichnet, daß das tabakstrangseitige Filterteil (3) aus flachenformigem, faserformigem, granulatfor igem oder verrottbarem Filtermateπal besteht.2. Ventilated filter cigarette according to claim 1, characterized in that the tobacco rod-side filter part (3) consists of flat, fibrous, granulate or granular or rotten filter material.
3. Ventilierte Filtercigarette nach Anspruch 2, dadurch gekennzeichnet, daß als Filtermaterial Cellulose, Celluloseester, vorzugsweise Celluloseacetat, Meltblown- Filtermateπal, Airlaid-Filtermaterial, mit Additiven versetzbares Filtermaterial, Tabak, andere leicht verrottbare Filtermateπalien oder thermoplastische Filterfasern eingesetzt ist.3. Ventilated filter cigarette according to claim 2, characterized in that the filter material used is cellulose, cellulose esters, preferably cellulose acetate, meltblown filter material, airlaid filter material, filter material which can be mixed with additives, tobacco, other easily decomposable filter materials or thermoplastic filter fibers.
4. Ventilierte Filtercigarette nach Anspruch 2 oder 3, dadurch gekennzeichnet, daß das Filtermaterial mit einem Additiv versetzt ist.4. Ventilated filter cigarette according to claim 2 or 3, characterized in that the filter material is mixed with an additive.
5. Ventilierte Filtercigarette nach Anspruch 4, dadurch gekennzeichnet, daß als Additive Aromastoffe, Sauren oder Basen m suspendierter oder gelöster Form, oder selektiv wirkende Adsorbentien wie Aktivkohle oder Sι02 eingesetzt werden. 5. Ventilated filter cigarette according to claim 4, characterized in that as additives, flavors, acids or bases m suspended or dissolved form, or selectively acting adsorbents such as activated carbon or Sι02 are used.
6. Ventilierte Filtercigarette nach einem der Anspruch 1 bis 5, dadurch gekennzeichnet, daß der Kern (1) des mundseitigen koaxialen Filterteils (4) aus grobtitrigem Fasermaterial besteht, wobei der Wert für Einzeltiter im Bereich von 3,0 bis 8,0 den und der Gesamttiter im Bereich von 15.000 bis 50.000 den liegt.6. Ventilated filter cigarette according to one of claims 1 to 5, characterized in that the core (1) of the mouth-side coaxial filter part (4) consists of coarse-titer fiber material, the value for individual titers in the range from 3.0 to 8.0 den and the total titer is in the range from 15,000 to 50,000 den.
7. Ventilierte Filtercigarette nach Anspruch 6, dadurch gekennzeichnet, daß der Einzeltiter 6, 0 den und der7. Ventilated filter cigarette according to claim 6, characterized in that the single titer 6, 0 and
Gesamttiter bei 17.000 den liegt.Total titre is 17,000 den.
8. Ventilierte Filtercigarette nach einem der Anspruch 1 bis 5, dadurch gekennzeichnet, daß der Mantel (2) des mundseitigen koaxialen Filterteils (4) aus Fasermaterial mit einem Einzeltiter im Bereich von 1,5 bis 3,0 den und der Gesamttiter im Bereich von 40.000 bis 75.000 den liegt.8. Ventilated filter cigarette according to one of claims 1 to 5, characterized in that the jacket (2) of the mouth-side coaxial filter part (4) made of fiber material with a single titer in the range from 1.5 to 3.0 and the total titer in the range 40,000 to 75,000 den.
9. Ventilierte Filtercigarette nach Anspruch 8, dadurch gekennzeichnet, daß der Einzeltiter 2,1 den und der Gesamttiter bei 55.000 den liegt.9. Ventilated filter cigarette according to claim 8, characterized in that the individual titer is 2.1 den and the total titer is 55,000 den.
10. Ventilierte Filtercigarette nach Anspruch 1, dadurch gekennzeichnet, daß das Verhältnis des Druckabfalls des Kerns (1) zu dem des Mantels (2) größer 2 ist.10. Ventilated filter cigarette according to claim 1, characterized in that the ratio of the pressure drop of the core (1) to that of the jacket (2) is greater than 2.
11. Ventilierte Filtercigarette nach Anspruch 10, dadurch gekennzeichnet, daß das Verhältnis des Druckabfalls des Kerns (1) zu dem des Mantels (2) bei 6 liegt.11. Ventilated filter cigarette according to claim 10, characterized in that the ratio of the pressure drop of the core (1) to that of the jacket (2) is 6.
12. Ventilierte Filtercigarette nach Anspruch 1, dadurch gekennzeichnet, daß die Oberflache des Kerns luftundurchlässig umhüllt oder luftundurchlässig gemacht ist. 12. Ventilated filter cigarette according to claim 1, characterized in that the surface of the core is enveloped in an air-impermeable manner or is made air-impermeable.
PCT/EP2000/001724 1999-05-27 2000-03-01 Ventilated filter cigarette WO2000072705A1 (en)

Priority Applications (13)

Application Number Priority Date Filing Date Title
DE50002368T DE50002368D1 (en) 1999-05-27 2000-03-01 VENTILATED FILTER CIGARETTE
UA2001128960A UA71011C2 (en) 1999-05-27 2000-03-01 Filter cigarette with ventilation elements
KR1020017015219A KR20020020896A (en) 1999-05-27 2000-03-01 Ventilated filter cigarette
AT00916882T ATE241289T1 (en) 1999-05-27 2000-03-01 VENTILATED FILTER CIGARETTE
SI200030158T SI1182940T1 (en) 1999-05-27 2000-03-01 Ventilated filter cigarette
EP00916882A EP1182940B1 (en) 1999-05-27 2000-03-01 Ventilated filter cigarette
SK1738-2001A SK284470B6 (en) 1999-05-27 2000-03-01 Ventilated filter cigarette
JP2000620826A JP2003500078A (en) 1999-05-27 2000-03-01 Ventilation filter cigarette
EA200101254A EA002654B1 (en) 1999-05-27 2000-03-01 Ventilated filter cigarette
PL352272A PL204630B1 (en) 1999-05-27 2000-03-01 Cigarette with ventilated filter
AU38074/00A AU3807400A (en) 1999-05-27 2000-03-01 Ventilated filter cigarette
BG106261A BG64188B1 (en) 1999-05-27 2001-12-21 Ventilated filter cigarette
HK02108819.0A HK1047019B (en) 1999-05-27 2002-12-04 Ventilated filter cigarette

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE19925313.7 1999-05-27
DE19925313A DE19925313C2 (en) 1999-05-27 1999-05-27 Ventilated filter cigarette

Publications (1)

Publication Number Publication Date
WO2000072705A1 true WO2000072705A1 (en) 2000-12-07

Family

ID=7910042

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/EP2000/001724 WO2000072705A1 (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)

Cited By (2)

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Publication number Priority date Publication date Assignee Title
US8550092B2 (en) 2007-07-17 2013-10-08 British American Tobacco (Investments) Limited Filter
US11910822B2 (en) 2017-10-25 2024-02-27 British American Tobacco (Investments) Limited Filter for a smoking article or an aerosol generating product

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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
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
MX2014014643A (en) * 2012-05-31 2015-02-12 Philip Morris Products Sa Smoking article with concentric filter.
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
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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Publication number Priority date Publication date Assignee Title
US8550092B2 (en) 2007-07-17 2013-10-08 British American Tobacco (Investments) Limited Filter
US9078471B2 (en) 2007-07-17 2015-07-14 British American Tobacco (Investments) Limited Filter
US10334875B2 (en) 2007-07-17 2019-07-02 British American Tobacco (Investments) Limited Filter
US11910822B2 (en) 2017-10-25 2024-02-27 British American Tobacco (Investments) Limited Filter for a smoking article or an aerosol generating product

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
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
EP1182940B1 (en) 2003-05-28
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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