EP1032283A1 - Biodegradable cigarette filter - Google Patents

Biodegradable cigarette filter

Info

Publication number
EP1032283A1
EP1032283A1 EP98961155A EP98961155A EP1032283A1 EP 1032283 A1 EP1032283 A1 EP 1032283A1 EP 98961155 A EP98961155 A EP 98961155A EP 98961155 A EP98961155 A EP 98961155A EP 1032283 A1 EP1032283 A1 EP 1032283A1
Authority
EP
European Patent Office
Prior art keywords
filter
cigarette
condensate
ventilation
tobacco
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.)
Granted
Application number
EP98961155A
Other languages
German (de)
French (fr)
Other versions
EP1032283B1 (en
Inventor
Paul Georg Henning
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
Original Assignee
HF and PhF Reemtsma GmbH and Co
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
Family has litigation
First worldwide family litigation filed litigation Critical https://patents.darts-ip.com/?family=7850356&utm_source=google_patent&utm_medium=platform_link&utm_campaign=public_patent_search&patent=EP1032283(A1) "Global patent litigation dataset” by Darts-ip is licensed under a Creative Commons Attribution 4.0 International License.
Application filed by HF and PhF Reemtsma GmbH and Co filed Critical HF and PhF Reemtsma GmbH and Co
Priority to SI9830306T priority Critical patent/SI1032283T1/en
Publication of EP1032283A1 publication Critical patent/EP1032283A1/en
Application granted granted Critical
Publication of EP1032283B1 publication Critical patent/EP1032283B1/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

Links

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
    • A24D3/06—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
    • A24D3/00—Tobacco smoke filters, e.g. filter-tips, filtering inserts; Filters specially adapted for simulated smoking devices; Mouthpieces for cigars or cigarettes
    • A24D3/04—Tobacco smoke filters characterised by their shape or structure
    • A24D3/043—Tobacco smoke filters characterised by their shape or structure with ventilation means, e.g. air dilution

Definitions

  • the invention relates to a biodegradable filter according to the preamble of claim 1.
  • the invention is therefore based on the object of creating a filter cigarette of the type specified which, while maintaining the advantages of the known filter cigarette, has a "acetate-typical see “taste impression and a” acetate-typical "visual appearance.
  • the advantages achieved with the invention are based on the selection of a special cellulose material and the design of a filter cigarette construction that is matched to it, adapting the essential parameters, namely the retention performance of the filter, the strand yield ratio of nicotine / condensate of the tobacco rod, the plug density of the tobacco mixture of the tobacco rod, the Air permeability of the cigarette paper and finally the degree of filter ventilation, in the direction of an overall construction that optimizes the taste impression on the one hand and the visual impression on the other.
  • the nicotine yield of the filter cigarette is up to a maximum of 1 mg and the condensate yield of 6 mg to 12 mg.
  • the desired degree of ventilation of 15 to 50% can be set by the appropriate design of the ventilation zone in the covering paper and the wrapping.
  • the ventilation zone of the filter is formed by one or two rows of holes which are at least 10 mm from the mouth end; the holes can be made either by laser radiation or mechanically on the finished cigarette and should be as small and as little visible as possible, with good results being achieved with 15 to 25 holes in two ventilation rows.
  • the filter is made from cellulose material processed according to the so-called "air-laid” process to a random fiber fleece and this is further crimped to the finished filter.
  • air-laid a suitable combination of basis weight, thickness and width of the air-laid fleece can be used.
  • the processed cellulose fibers are not suspended in water as in the classic paper production process and placed on a permeable sieve for sheet formation, on which the cellulose fibers are then conditioned through their grinding and fibrillation, they are mechanically networked with one another, but rather, at most, are placed in an air stream, which transports them onto a permeable endless sieve and places them on it in an unordered manner.
  • a mechanical bond and thus the necessary strength required for further processing is obtained by adding a binder such as polyvinyl alcohol, polyvinyl acetate, polymer starch, dextrin or latex.
  • a binder such as polyvinyl alcohol, polyvinyl acetate, polymer starch, dextrin or latex.
  • the degree of density (g / cm 3 ) and thus the volume or thickness is set by subsequent calendering.
  • the weight per unit area (g / m 2 ) is controlled via the sieving speed or the fiber entry into the air flow.
  • the filter cigarette has a tobacco rod surrounded by a cigarette paper and a filter connected to the tobacco rod.
  • the topping density of the tobacco mixture is between 200 and 250 mg / ml.
  • the tensile resistance of the strand is between 45 and 65 mmWS, measured closed.
  • the cigarette paper has a low to medium air permeability in the range of 15 to 50 Coresta units.
  • the strand yield ratio nicotine * 10 / condensate of the tobacco mixture should be between 0.6 and 0.9.
  • the filter consists of the folded, uncrimped air-laid fleece and is surrounded by a porous wrapping paper.
  • a zone-porous covering paper surrounds the wrapping paper and is used to attach the filter to the tobacco rod.
  • the air permeability of the porous zone of the covering paper is chosen so that the desired degree of filter ventilation results in connection with the wrapping paper underneath.

Abstract

The invention relates to a filter cigarette comprising a biodegradable filter and a tobacco strand surrounded by cigarette paper, a non-woven air-laid cellulose filter with a normal retention capacity and a filter ventilation area extending in a peripheral direction. The inventive filter cigarette has the following combination of features: the filter has a condensate retention capacity of 40-60 %; the non-woven cellulose is non-crimped, the nicotine/tobacco strand condensate yield ratio lies between 0,6 and 0,9 (nicotine *10/condensate), the apparent density of the tobacco mixture of the tobacco strand ranges from 200 to 250mg/ml, the tobacco strand drag is between 45 and 65 mmwWS when measured in an enclosed form, air permeability of the cigarette paper is 20-50 CORESTA units and the filter ventilation degree is 15-50 %.

Description

Biologisch abbaubarer Filter für Cigaretten Biodegradable filter for cigarettes
Die Erfindung betrifft einen biologisch abbaubaren Filter gemäß Oberbegriff des Patentanspruchs 1.The invention relates to a biodegradable filter according to the preamble of claim 1.
Derartige Filtercigaretten sind in der Vergangenheit mehrfach beschrieben worden. Ein Nachteil aller bisher beschriebenen Filtercigaretten mit biologisch abbaubarem Filter besteht jedoch im deutlichen Einfluß auf den Rauchgeschmack, der durch die unterschiedlichen beschriebenen Materialien ausgeübt wird und der stets dazu geführt hat, daß eine Cigarette, die mit einem anderen Material als dem üblichen Cellulose-Acetat hergestellt wurde von den Rauchern abgelehnt wurde . Ein weiterer Nachteil besonders von aus biologisch abbaubarer Cellulose hergestellten Filtern war außerdem das deutlich sichtbar andere Erscheinungsbild des Filter-Endes . Dies hat in der Vergangenheit dazu ge- führt, daß biologisch abbaubare Filter sich auf Acetatfilter- Märkten nicht als Monofilter durchsetzen konnten.Such filter cigarettes have been described several times in the past. A disadvantage of all filter cigarettes with biodegradable filter described so far, however, is the clear influence on the smoke taste, which is exerted by the different materials described and which has always led to the fact that a cigarette made with a different material than the usual cellulose acetate has been rejected by the smokers. Another disadvantage, particularly of filters made from biodegradable cellulose, was also the clearly visible different appearance of the filter end. In the past, this has meant that biodegradable filters have not been able to establish themselves as monofilters in acetate filter markets.
Der Erfindung liegt deshalb die Aufgabe zugrunde, eine Filtercigarette der angegebenen Art zu schaffen, die unter Beibehaltung der Vorteile der bekannten Filtercigarette einen "acetat-typi- sehen" Geschmackseindruck und ein "acetat-typisches" optisches Erscheinungsbild liefert.The invention is therefore based on the object of creating a filter cigarette of the type specified which, while maintaining the advantages of the known filter cigarette, has a "acetate-typical see "taste impression and a" acetate-typical "visual appearance.
Diese Aufgabe wird erfindungsgemäß durch die im kennzeichnenden Teil des Anspruchs 1 angegebenen Merkmale gelöst.This object is achieved by the features specified in the characterizing part of claim 1.
Zweckmäßige Ausführungsformen werden durch die Merkmale der Unteransprüche definiert.Appropriate embodiments are defined by the features of the subclaims.
Die mit der Erfindung erzielten Vorteile beruhen auf der Auswahl eines speziellen Cellulosematerials und der Auslegung einer darauf abgestimmten Filtercigarettenkonstruktion unter Anpassung der wesentlichen Parameter, nämlich der Retentionsleistung des Filters, des Strangausbeute-Verhältnisses Nikotin/Kondensat des Tabakstrangs, der Stopfdichte der Tabakmischung des Tabakstrangs, der Luftdurchlässigkeit des Cigarettenpapiers und schließlich des Filterventilationsgrads, in Richtung einer Gesamtkonstruktion, die einerseits den Geschmackseindruck und andererseits die optische Anmutung optimiert. Dabei beträgt die Nikotin-Ausbeute der Filtercigarette bis zu maximal 1 mg und die Kondensat-Ausbeute von 6 mg bis 12 mg.The advantages achieved with the invention are based on the selection of a special cellulose material and the design of a filter cigarette construction that is matched to it, adapting the essential parameters, namely the retention performance of the filter, the strand yield ratio of nicotine / condensate of the tobacco rod, the plug density of the tobacco mixture of the tobacco rod, the Air permeability of the cigarette paper and finally the degree of filter ventilation, in the direction of an overall construction that optimizes the taste impression on the one hand and the visual impression on the other. The nicotine yield of the filter cigarette is up to a maximum of 1 mg and the condensate yield of 6 mg to 12 mg.
Der angestrebte Ventilationsgrad von 15 bis 50 % läßt sich durch die entsprechende Ausgestaltung der Ventilationszone im Belag- papier und der Umhüllung einstellen.The desired degree of ventilation of 15 to 50% can be set by the appropriate design of the ventilation zone in the covering paper and the wrapping.
Nach einer bevorzugten Ausführungsform wird die Ventilationszone des Filters durch eine oder zwei Lochreihe(n) gebildet, die mindestens 10 mm vom mundseitigen Ende entfernt ist; die Löcher können entweder durch Laser-Bestrahlung oder mechanisch an der fertigen Cigarette hergestellt werden und sollten möglichst klein und wenig sichtbar sein, wobei gute Ergebnisse mit 15 bis 25 Löchern in zwei Ventilationsreihen erreicht werden.According to a preferred embodiment, the ventilation zone of the filter is formed by one or two rows of holes which are at least 10 mm from the mouth end; the holes can be made either by laser radiation or mechanically on the finished cigarette and should be as small and as little visible as possible, with good results being achieved with 15 to 25 holes in two ventilation rows.
Überraschenderweise hat sich gezeigt, daß der acetat-typische Geschmackseindruck und die acetat-typische optische Anmutung nur erreicht werden kann, wenn der Filter aus nach dem sogenannten "Air-Laid"-Verfahren zu einem Wirrfaservlies verarbeiteten Cel- lulose-Material hergestellt wird und dieses ungekrimpt zum fertigen Filter weiterverarbeitet wird. Dabei kann je nach ge- wünschtem Filterzugwiderstand und damit Retentionsgrad eine geeignete Kombination von Flächengewicht, Dicke und Breite des Air-Laid-Vlieses eingesetzt werden.Surprisingly, it has been shown that the typical taste impression and the typical acetate appearance only can be achieved if the filter is made from cellulose material processed according to the so-called "air-laid" process to a random fiber fleece and this is further crimped to the finished filter. Depending on the desired filter draw resistance and thus the degree of retention, a suitable combination of basis weight, thickness and width of the air-laid fleece can be used.
Beim Air-Laid-Verfahren, wie es beispielsweise in der US-PS 4,375,447 beschrieben ist, werden die aufbereiteten Cellulose- fasern nicht wie im klassischen Papierherstellungsverfahren in Wasser suspendiert und zur Blattbildung auf ein durchlässiges Sieb gegeben, auf dem sich dann die Cellulosefasern, bedingt durch deren Mahlung und Fibrillierung, untereinander mechanisch vernetzen, sondern maximal vereinzelt in einen Luftstrom gegeben, der sie auf ein durchlässiges Endlossieb transportiert und auf diesem ungeordnet ablegt . Hierdurch erhält man ein fast watteförmiges voluminöses Vlies, das so keine mechanische Festigkeit oder Faserverknüpfung aufweist. Eine mechanische Bindung und damit die notwendige Festigkeit, die zur Weiterverarbeitung-erforderlich ist, erhält man durch Zugabe eines Bindemittels wie z.B. Polyvinylalkohol, Polyvinylacetat, Polymerstärke, Dextrin oder Latex. Den Grad der Dichte (g/cm3 ) und damit der Voluminösität bzw. Dicke stellt man durch anschließen- des Kalandrieren ein. Das Flächengewicht (g/m2) wird über die Siebgeschwindigkeit oder den Fasereintrag in den Luftstrom gesteuert.In the air-laid process, as described, for example, in US Pat. No. 4,375,447, the processed cellulose fibers are not suspended in water as in the classic paper production process and placed on a permeable sieve for sheet formation, on which the cellulose fibers are then conditioned through their grinding and fibrillation, they are mechanically networked with one another, but rather, at most, are placed in an air stream, which transports them onto a permeable endless sieve and places them on it in an unordered manner. This results in an almost wad-shaped, voluminous fleece, which has no mechanical strength or fiber linkage. A mechanical bond and thus the necessary strength required for further processing is obtained by adding a binder such as polyvinyl alcohol, polyvinyl acetate, polymer starch, dextrin or latex. The degree of density (g / cm 3 ) and thus the volume or thickness is set by subsequent calendering. The weight per unit area (g / m 2 ) is controlled via the sieving speed or the fiber entry into the air flow.
Die Erfindung wird im folgenden an Hand von Ausführungsbei- spielen näher erläutert:The invention is explained in more detail below on the basis of exemplary embodiments:
Die Filtercigarette weist einen durch ein Cigarettenpapier umgebenen Tabakstrang und einen mit dem Tabakstrang verbundenen Filter auf. Die Stopfdichte der Tabakmischung liegt zwischen 200 und 250 mg/ml. Der Zugwiderstand des Strangs liegt zwischen 45 und 65 mmWS, geschlossen gemessen. Das Cigarettenpapier hat eine niedrige bis mittlere Luftdurchlässigkeit im Bereich von 15 bis 50 Coresta-Einheiten. Das Strangausbeute-Verhältnis Nikotin*10/Kondensat der Tabakmischung sollte zwischen 0,6 und 0,9 liegen.The filter cigarette has a tobacco rod surrounded by a cigarette paper and a filter connected to the tobacco rod. The topping density of the tobacco mixture is between 200 and 250 mg / ml. The tensile resistance of the strand is between 45 and 65 mmWS, measured closed. The cigarette paper has a low to medium air permeability in the range of 15 to 50 Coresta units. The strand yield ratio nicotine * 10 / condensate of the tobacco mixture should be between 0.6 and 0.9.
Der Filter besteht aus dem zusammengefalteten ungekrimpten Air- Laid-Vlies und ist von einem porösen Umhüllungspapier umgeben. Ein zonenporöses Belagpapier umgibt das Umhüllungspapier und dient zur Befestigung des Filters am Tabakstrang. Dabei wird die Luftdurchlässigkeit der porösen Zone des Belagpapiers so gewählt, daß sich in Verbindung mit dem darunterliegenden Umhüllungspapier der gewünschte Filterventilationsgrad ergibt. Versuche mit einem solchen Filter haben in Kombination mit dem spezifizierten Tabakstrang zu einer Kondensat-Ausbeute von 6 bis 12 mg und einer Nikotin-Ausbeute von maximal 1 mg geführt. Tests mit geübten Rauchern zeigten, daß derartige Cigaretten sich nicht von konventionell mit Acetatfiltern hergestellten unterscheiden ließen. The filter consists of the folded, uncrimped air-laid fleece and is surrounded by a porous wrapping paper. A zone-porous covering paper surrounds the wrapping paper and is used to attach the filter to the tobacco rod. The air permeability of the porous zone of the covering paper is chosen so that the desired degree of filter ventilation results in connection with the wrapping paper underneath. Experiments with such a filter in combination with the specified tobacco rod have resulted in a condensate yield of 6 to 12 mg and a maximum nicotine yield of 1 mg. Experiments with experienced smokers showed that such cigarettes could not be distinguished from those made conventionally with acetate filters.

Claims

Patentansprüche claims
1. Filtercigarette mit einem biologisch abbaubaren Filter mit: a) einem durch ein Cigarettenpapier umgebenen Tabakstrang; b) einem aus nach dem "Air-Laid"-Verfahren hergestellten Cellulosevlies hergestellten Filter mit "normaler" Retentionsleistung; und mit c) einer in Umfangsrichtung verlaufenden Filter-Ventilationszone; gekennzeichnet durch die Kombination folgender Merkmale: d) der Filter hat eine Kondensat-Retentionsleistung von 40 bis 60 %; e) das Cellulosevlies ist "ungekrimpt"; f ) das Strangausbeute-Verhältnis Nikotin/Kondensat des Tabakstrangs liegt zwischen 0,6 und 0,9 (Nikotin*10/Kondensat) ; g) die Stopfdichte der Tabakmischung des Tabakstrangs liegt zwischen 200 und 250 mg/ml; h) der Zugwiderstand des Tabakstrangs liegt zwischen 45 und1. A filter cigarette with a biodegradable filter comprising: a) a tobacco rod surrounded by cigarette paper; b) a filter made from cellulose fleece manufactured according to the "air-laid" process with "normal" retention performance; and with c) a circumferential filter ventilation zone; characterized by the combination of the following features: d) the filter has a condensate retention capacity of 40 to 60%; e) the cellulose fleece is "uncrimped"; f) the strand yield ratio nicotine / condensate of the tobacco rod is between 0.6 and 0.9 (nicotine * 10 / condensate); g) the plug density of the tobacco mixture of the tobacco rod is between 200 and 250 mg / ml; h) the pull resistance of the tobacco rod is between 45 and
65 mmWS, geschlossen gemessen; i) die Luftdurchlässigkeit des Cigarettenpapiers beträgt 20 bis 50 Coresta-Einheiten; und j) der Filterventilationsgrad beträgt 15 bis 50 %.65 mmWS, measured closed; i) the air permeability of the cigarette paper is 20 to 50 Coresta units; and j) the degree of filter ventilation is 15 to 50%.
2. Filtercigarette nach Anspruch 1, dadurch gekennzeichnet, daß die Ventilationszone durch eine Kombination poröser Umhül- lungs- und Belagpapiere gebildet wird, die mindestens 10 mm vom mundseitigen Ende des Filters beginnt.2. Filter cigarette according to claim 1, characterized in that the ventilation zone is formed by a combination of porous wrapping and covering papers, which begins at least 10 mm from the mouth end of the filter.
3. Filtercigarette nach Anspruch 1, dadurch gekennzeichnet, daß die Ventilationszone an der fertigen Cigarette mechanisch oder durch Laserstrahlen hergestellt wird. 3. Filter cigarette according to claim 1, characterized in that the ventilation zone on the finished cigarette is produced mechanically or by laser beams.
4. Filtercigarette nach Anspruch 2, dadurch gekennzeichnet, daß die Ventilationszone durch eine oder zwei Reihe(n) von Ventilations-öffnungen gebildet ist, die mindestens 10 mm vom mundseitigen Ende des Filters entfernt ist (sind).4. Filter cigarette according to claim 2, characterized in that the ventilation zone is formed by one or two row (s) of ventilation openings, which is (are) at least 10 mm from the mouth end of the filter.
5. Filtercigarette nach einem der Ansprüche 1 bis 4 , dadurch gekennzeichnet, daß der Filter aus einem ungekrimpten Cellulosevlies mit einer Dicke von 0,5 bis 1,5 mm besteht.5. Filter cigarette according to one of claims 1 to 4, characterized in that the filter consists of an uncrimped cellulose fleece with a thickness of 0.5 to 1.5 mm.
6. Filtercigarette nach einem der Ansprüche 1 bis 5, dadurch gekennzeichnet, daß der Filter aus einem ungekrimpten Cellulosevlies mit einer Breite von 10 bis 15 cm besteht. 6. Filter cigarette according to one of claims 1 to 5, characterized in that the filter consists of an uncrimped cellulose fleece with a width of 10 to 15 cm.
EP98961155A 1997-11-21 1998-11-10 Biodegradable cigarette filter Expired - Lifetime EP1032283B1 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
SI9830306T SI1032283T1 (en) 1997-11-21 1998-11-10 Biodegradable cigarette filter

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
DE19753193A DE19753193A1 (en) 1997-11-21 1997-11-21 Biologically degradable filter for cigarette
DE19753193 1997-11-21
PCT/EP1998/007120 WO1999026497A1 (en) 1997-11-21 1998-11-10 Biodegradable cigarette filter

Publications (2)

Publication Number Publication Date
EP1032283A1 true EP1032283A1 (en) 2000-09-06
EP1032283B1 EP1032283B1 (en) 2002-10-02

Family

ID=7850356

Family Applications (1)

Application Number Title Priority Date Filing Date
EP98961155A Expired - Lifetime EP1032283B1 (en) 1997-11-21 1998-11-10 Biodegradable cigarette filter

Country Status (27)

Country Link
EP (1) EP1032283B1 (en)
JP (1) JP2001523479A (en)
KR (1) KR20010032330A (en)
CN (1) CN1130135C (en)
AT (1) ATE225134T1 (en)
AU (1) AU1667699A (en)
BG (1) BG64611B1 (en)
CZ (1) CZ289363B6 (en)
DE (2) DE19753193A1 (en)
DK (1) DK1032283T3 (en)
EA (1) EA001997B1 (en)
EE (1) EE200000268A (en)
ES (1) ES2182382T3 (en)
HK (1) HK1034880A1 (en)
HR (1) HRP20000418A2 (en)
HU (1) HU225287B1 (en)
ID (1) ID25459A (en)
NO (1) NO309354B1 (en)
OA (1) OA11414A (en)
PL (1) PL187198B1 (en)
PT (1) PT1032283E (en)
SK (1) SK283275B6 (en)
TR (1) TR200001454T2 (en)
TW (1) TW533062B (en)
UA (1) UA56285C2 (en)
WO (1) WO1999026497A1 (en)
YU (1) YU49407B (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102009016148A1 (en) 2009-04-03 2010-10-14 Mcairlaid's Vliesstoffe Gmbh & Co. Kg Filter material for cleaning air and gases

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EE200100445A (en) 1999-02-26 2002-12-16 H.F. & Ph.F. Reemtsma Gmbh Smoked product
CN100551283C (en) * 2005-11-23 2009-10-21 云南烟草科学研究院 A kind of cigarette with binary composite tip stick and preparation method thereof
US7878210B2 (en) * 2007-06-04 2011-02-01 Philip Morris Usa Inc. Cellulose acetate fiber modification
US9149068B2 (en) * 2012-10-11 2015-10-06 Schweitzer-Mauduit International, Inc. Wrapper having reduced ignition proclivity characteristics

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US792913A (en) * 1903-01-16 1905-06-20 James J Mulconroy Coupling device for rubber tubing, pipe, hose, &c.
ZA804947B (en) * 1979-08-28 1981-06-24 British American Tobacco Co Smoke filtration
US4375447A (en) * 1979-12-21 1983-03-01 Kimberly-Clark Corporation Method for forming an air-laid web of dry fibers
DE3625593A1 (en) * 1986-07-29 1988-02-04 Bat Cigarettenfab Gmbh FILTER CIGARETTE
DE69520816T2 (en) * 1994-10-31 2001-09-13 Daicel Chem Tobacco smoke filter material and tobacco smoke filter made from this material
JP3606950B2 (en) * 1995-05-31 2005-01-05 ダイセル化学工業株式会社 Cigarette filter and manufacturing method thereof

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Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102009016148A1 (en) 2009-04-03 2010-10-14 Mcairlaid's Vliesstoffe Gmbh & Co. Kg Filter material for cleaning air and gases

Also Published As

Publication number Publication date
SK7422000A3 (en) 2000-10-09
ES2182382T3 (en) 2003-03-01
EE200000268A (en) 2001-08-15
WO1999026497A1 (en) 1999-06-03
JP2001523479A (en) 2001-11-27
HU225287B1 (en) 2006-09-28
ID25459A (en) 2000-10-05
DE59805850D1 (en) 2002-11-07
SK283275B6 (en) 2003-05-02
NO20002516L (en) 2000-05-16
BG64611B1 (en) 2005-09-30
UA56285C2 (en) 2003-05-15
NO20002516D0 (en) 2000-05-16
YU49407B (en) 2005-11-28
ATE225134T1 (en) 2002-10-15
PL187198B1 (en) 2004-05-31
DK1032283T3 (en) 2003-02-03
EP1032283B1 (en) 2002-10-02
CN1130135C (en) 2003-12-10
HRP20000418A2 (en) 2000-08-31
HUP0100392A2 (en) 2001-05-28
EA001997B1 (en) 2001-10-22
CZ20001829A3 (en) 2001-05-16
KR20010032330A (en) 2001-04-16
OA11414A (en) 2004-04-20
PL340593A1 (en) 2001-02-12
AU1667699A (en) 1999-06-15
TW533062B (en) 2003-05-21
PT1032283E (en) 2003-02-28
HUP0100392A3 (en) 2001-11-28
CZ289363B6 (en) 2002-01-16
TR200001454T2 (en) 2002-06-21
BG104547A (en) 2001-02-28
EA200000549A1 (en) 2000-10-30
CN1283965A (en) 2001-02-14
NO309354B1 (en) 2001-01-22
HK1034880A1 (en) 2001-11-09
YU30900A (en) 2002-09-19
DE19753193A1 (en) 1999-05-27

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