EP0474706B1 - Zigarette mit verminderter seitenströmung des rauches - Google Patents

Zigarette mit verminderter seitenströmung des rauches Download PDF

Info

Publication number
EP0474706B1
EP0474706B1 EP19900908451 EP90908451A EP0474706B1 EP 0474706 B1 EP0474706 B1 EP 0474706B1 EP 19900908451 EP19900908451 EP 19900908451 EP 90908451 A EP90908451 A EP 90908451A EP 0474706 B1 EP0474706 B1 EP 0474706B1
Authority
EP
European Patent Office
Prior art keywords
cigarette
wrapping
paper
filler rod
sidestream smoke
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Expired - Lifetime
Application number
EP19900908451
Other languages
English (en)
French (fr)
Other versions
EP0474706A1 (de
Inventor
Norman Cohen
Larry Bowen
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.)
Rothmans Benson and Hedges Inc
Original Assignee
Rothmans Benson and Hedges Inc
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 claimed from GB898912688A external-priority patent/GB8912688D0/en
Priority claimed from GB898914267A external-priority patent/GB8914267D0/en
Priority claimed from GB898917089A external-priority patent/GB8917089D0/en
Application filed by Rothmans Benson and Hedges Inc filed Critical Rothmans Benson and Hedges Inc
Publication of EP0474706A1 publication Critical patent/EP0474706A1/de
Application granted granted Critical
Publication of EP0474706B1 publication Critical patent/EP0474706B1/de
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
    • A24D1/00—Cigars; Cigarettes
    • A24D1/02—Cigars; Cigarettes with special covers

Definitions

  • the present invention relates to a novel cigarette structure which enables a decreased sidestream smoke to be achieved.
  • Cigarettes conventionally comprise a paper tube or wrapper housing a tobacco filler rod and a filter for removing smoke constituents.
  • One of the common problems associated with cigarettes is the amount of sidestream smoke that is formed on static burning, for example, when the cigarette is idling and not being drawn upon by the smoker or is simply resting in an ashtray while burning. Visible sidestream smoke that is formed during static burning is comprised mainly of particulate matter and the smoke often is irritating and objectionable to non-smokers in the vicinity of the idling cigarette.
  • the tobacco rod is wrapped with two different paper wrappers.
  • U.S. 3,633,589 Kahane 3,395,714 Kahane 3,744,496 McCarty et al 4,231,377 Cline et al 4,505,282 Cogbill et al 4,585,016 Grollimund 4,624,268 Baker et al
  • U.S. Patent No. 3,633,589 employs an outer porous conventional cigarette paper and an inner sheet which is practically impervious to the passage of air therethrough. Such materials tend to result in a cigarette which is self-extinguishing.
  • an inner sheet having a limited porosity in accordance with the invention, an improved cigarette is achieved, since a significant decrease in sidestream smoke production is achieved without tending to self-extinguish.
  • the inner wrapper in the present invention is formed of a particular type of paper which is relatively non-porous but has some porosity and contains very little filler. This paper is quite slow burning and tends to produce a significant decrease in sidestream smoke. However, on its own, this wrapper tends to produce an unsightly black ash and has a tendency to extinguish the cigarette, both of which are undesirable.
  • the present invention therefore, employs a double wrapping of the tobacco rod in the finished cigarette, namely an inner wrapping of a special paper and an outer wrapping of a conventional cigarette paper.
  • the special paper possesses certain properties as noted above.
  • the paper is relatively non-porous but has some porosity, possessing a Coresta porosity of about 1 to about 10 units, preferably about 1 to about 5 units (Coresta porosity is described in the international standard I.S.O. 2965).
  • the low but positive porosity is critical to obtaining a significant decrease in sidestream smoke, in that papers with a porosity of higher than about 5 Coresta units or lower than about 1 Coresta unit are not nearly as effective.
  • the cigarette becomes self-extinguishing.
  • the special paper also has a low filler content, generally about 1 to about 8 wt.%, preferably less than about 5%.
  • the paper may have a paper weight which is typically about 18 g/sq.m.
  • the inner wrapper may have other characteristics.
  • One component which may be present are salts of organic chemicals, such as citric acid or its salts, to modify the burning rate of the inner wrapper.
  • Such materials, when present, may comprise about 0.1 to about 2 wt%.
  • the inner wrapper may be provided with perforations to permit the passage of gases through them, with such perforations being made mechanically, electrostatically or by laser beam.
  • the decrease in sidestream smoke which is observed is a significant decrease, generally approximately 30% to 70%, over the sidestream produced by smoking a conventionally-wrapped cigarette of the same tobacco blend.
  • the outer wrapper is provided by conventional cigarette paper.
  • Such conventional paper preferably has a weight of about 35 to about 65 g/sq.m. and a filler content of about 18 to about 40 wt%.
  • rate improvement additives such as citric acid or its salts, also may be present in an amount of about 0.2 to about 4 wt%.
  • the cigarettes according to the present invention are produced in any convenient manner, generally on a conventional cigarette making machine, with the two wrappers applied to the tobacco filler rod, sequentially or preferably simultaneously.
  • the two wrappers may be laminated together prior to wrapping the tobacco filler rod, if desired.
  • the present invention provides a novel cigarette structure having a decreased sidestream smoke emission by employing a double-wrapping of the tobacco rod, with an inner wrapper of low porosity paper.
  • Cigarettes are staple items of commerce and, accordingly, the present invention has industrial application. Modifications are possible within the scope of this invention.

Landscapes

  • Cigarettes, Filters, And Manufacturing Of Filters (AREA)
  • Paper (AREA)

Claims (6)

  1. Zigarette mit einem Tabakstrang, der mit einer inneren Umhüllung und einer äußeren Umhüllung umwickelt ist, dadurch gekennzeichnet, daß
    - die innere Umhüllung von einem relativ porenfreien Papier mit einer Coresta-Porosität von etwa 1 bis etwa 10 Einheiten und einem Füllstoffanteil von etwa 1 bis etwa 8 Gew.-% gebildet ist, und
    - die äußere Umhüllung von herkömmlichem Zigarettenpapier mit einem Gewicht von etwa 35 bis etwa 65 g/m² und einem Füllstoffanteil von etwa 18 bis etwa 40 Gew.-% gebildet ist.
  2. Zigarette nach Anspruch 1, dadurch gekennzeichnet, daß die genannte innere Umhüllung von relativ porenfreiem Papier mit einer Coresta-Porosität von etwa 1 bis etwa 5 Einheiten gebildet ist.
  3. Zigarette nach Anspruch 1, dadurch gekennzeichnet, daß die genannte innere Umhüllung von porenfreiem Papier mit einer Coresta-Porosität von wenigstens etwa 2 Einheiten gebildet ist.
  4. Zigarette nach Anspruch 1, dadurch gekennzeichnet, daß die genannte äußere Umhüllung wenigstens eine die Verbrennungsgeschwindigkeit modifizierende Chemikalie in einer Menge von etwa 0,2 bis etwa 4 Gew.-% enthält.
  5. Zigarette nach Anspruch 1, 2, 3 oder 4, dadurch gekennzeichnet, daß die genannte innere Umhüllung etwa 0,1 bis etwa 2 Gew.-% von wenigstens einer die Verbrennungsgeschwindigkeit modifizierenden Chemikalie enthält.
  6. Verfahren zum Zusammenfügen einer Zigarette, bestehend aus der Umhüllung eines Tabakstrangs zum Ausbilden eines umhüllten Tabakstrangs und dem Formen einzelner Zigaretten aus dem umhüllten Tabakstrang, gekennzeichnet durch:
    - die Verwendung sowohl einer inneren Umhüllung als auch einer äußeren Umhüllung, wobei die innere Umhüllung von relativ porenfreiem Papier mit einer Coresta-Porosität von etwa 1 bis etwa 10 Einheiten und einem Füllstoffanteil von etwa 1 bis etwa 8 Gew.-% gebildet ist und die äußere Umhüllung von herkömmlichem Zigarettenpapier mit einem Gewicht von etwa 35 bis etwa 65 g/m² und einem Füllstoffanteil von etwa 18 bis etwa 40 Gew.-% gebildet ist, und
    - die gleichzeitige Umhüllung des Tabakstrangs mit der genannten inneren Umhüllung und der genannten äußeren Umhüllung zur Ausbildung des umhüllten Tabakstrangs.
EP19900908451 1989-06-02 1990-05-31 Zigarette mit verminderter seitenströmung des rauches Expired - Lifetime EP0474706B1 (de)

Applications Claiming Priority (6)

Application Number Priority Date Filing Date Title
GB8912688 1989-06-02
GB898912688A GB8912688D0 (en) 1989-06-02 1989-06-02 Cigarette with decreased sidestream smoke
GB898914267A GB8914267D0 (en) 1989-06-21 1989-06-21 Cigarette with decreased sidestream smoke-ii
GB8914267 1989-06-21
GB898917089A GB8917089D0 (en) 1989-07-26 1989-07-26 Cigarette with decreased sidestream smoke
GB8917089 1989-07-26

Publications (2)

Publication Number Publication Date
EP0474706A1 EP0474706A1 (de) 1992-03-18
EP0474706B1 true EP0474706B1 (de) 1994-03-30

Family

ID=27264506

Family Applications (1)

Application Number Title Priority Date Filing Date
EP19900908451 Expired - Lifetime EP0474706B1 (de) 1989-06-02 1990-05-31 Zigarette mit verminderter seitenströmung des rauches

Country Status (6)

Country Link
EP (1) EP0474706B1 (de)
JP (1) JP2572488B2 (de)
AU (1) AU639239B2 (de)
CA (1) CA2054745C (de)
DE (1) DE69007791T2 (de)
WO (1) WO1990014776A1 (de)

Families Citing this family (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB8720726D0 (en) * 1987-09-03 1987-10-07 British American Tobacco Co Smoking articles
US6345625B1 (en) 1997-12-06 2002-02-12 Kar Eng Chew Filter for secondary smoke and smoking articles incorporating the same
WO2001048315A1 (fr) * 1999-12-27 2001-07-05 Japan Tobacco Inc. Cigarette
CA2434449C (en) 2001-01-15 2007-02-20 Japan Tobacco Inc. Low fire spreading cigarette
EP1493343B1 (de) * 2002-03-18 2014-05-07 Japan Tobacco Inc. Zigarette mit reduziertem unterstromrauch
UY28363A1 (es) * 2003-06-13 2004-12-31 Philip Morris Prod Envoltorio para cigarrillos con relleno catalitico y metodos para realizar los mismos.
WO2012133797A1 (ja) * 2011-03-31 2012-10-04 日本たばこ産業株式会社 可視副流煙量と主流煙中一酸化炭素量を減少させるシガレット巻紙およびシガレット

Family Cites Families (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB1111007A (en) * 1965-03-30 1968-04-24 Imp Tobacco Co Ltd Improvements in cigarettes and paper therefor
US3633589A (en) * 1970-02-27 1972-01-11 Wilhelm Kahane Cigarette having composite wrapper construction
US4231377A (en) * 1978-08-30 1980-11-04 Olin Corporation Wrapper for smoking articles containing magnesium oxide
US4225636A (en) * 1979-03-08 1980-09-30 Olin Corporation High porosity carbon coated cigarette papers
CA1196542A (en) * 1982-01-15 1985-11-12 Hal E. Guess Smoking article having reduced sidestream smoke
JPS61501546A (ja) * 1983-01-24 1986-07-31 コ−ン，チャ−ルズ・シ− 巻きタバコ用紙の処理方法
US4622983A (en) * 1983-08-08 1986-11-18 Kimberly-Clark Corporation Reduced ignition proclivity smoking article wrapper and smoking article
GB8912238D0 (en) * 1989-05-26 1989-07-12 Imp Tobacco Co Ltd Improvements to smoking articles
US5143098A (en) * 1989-06-12 1992-09-01 Philip Morris Incorporated Multiple layer cigarette paper for reducing sidestream smoke

Also Published As

Publication number Publication date
DE69007791D1 (de) 1994-05-05
CA2054745A1 (en) 1990-12-03
AU639239B2 (en) 1993-07-22
CA2054745C (en) 1996-10-08
AU5733990A (en) 1991-01-07
EP0474706A1 (de) 1992-03-18
JPH04501805A (ja) 1992-04-02
DE69007791T2 (de) 1994-08-18
WO1990014776A1 (en) 1990-12-13
JP2572488B2 (ja) 1997-01-16

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