EP0432927A1 - Improved cigarette - Google Patents
Improved cigarette Download PDFInfo
- Publication number
- EP0432927A1 EP0432927A1 EP90312761A EP90312761A EP0432927A1 EP 0432927 A1 EP0432927 A1 EP 0432927A1 EP 90312761 A EP90312761 A EP 90312761A EP 90312761 A EP90312761 A EP 90312761A EP 0432927 A1 EP0432927 A1 EP 0432927A1
- Authority
- EP
- European Patent Office
- Prior art keywords
- cigarette
- tobacco
- wrapper
- cigarette according
- filler
- 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.)
- Withdrawn
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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
- A24D1/00—Cigars; Cigarettes
- A24D1/02—Cigars; Cigarettes with special covers
Definitions
- the invention relates to an improved cigarette.
- Cigarettes of the invention show reduced sidestream smoke emission. Recently, considerable effort has gone into the development of cigarettes show low levels of sidestream smoke emission, but with limited success. It is desirable that a cigarette has a conventional appearance and taste to the smoker, as well as allowing the manufacturer flexibility in the matters of composition of the tobacco charge, type of filter, if any, used, ventilation level, puff count and dimensions of the cigarette.
- One solution proposed to reduce sidestream smoke emission is to employ as the wrapper for the tobacco rod of the cigarette a paper impregnated with an agent which reduces sidestream smoke emission.
- a paper impregnated with an agent which reduces sidestream smoke emission is disclosed, for example, in US 4 721 120.
- the use of a treated rod wrapper with an untreated paper overwrap is disclosed in US 4 505 282.
- the use of treated wrappers may lead the smoker to perceive the smoke of the cigarette as having an unusual flavour, which may be unacceptable.
- the present inventors have now surprisingly found that if an inner wrapper of reconstituted tobacco is employed between the tobacco rod and the outer paper wrapper, sidestream smoke emission is reduced.
- a cigarette comprising a rod of smoking material filler wrapped in an inner wrapper of reconstituted tobacco and an outer wrapper of paper, the outer wrapper including from 0 to 2% alkali metal salt such as Potassium citrate.
- Cigarettes according to the invention may be plain or have a filter tip.
- reconstituted tobacco By reconstituted tobacco is meant a sheet material composed of tobacco material and a binder. No additives are normally included in reconstituted tobacco which may not also be used on conventional tobacco.
- conventional tobacco blends for cigarettes may contain reconstituted tobacco, cut to about the same size as conventional tobacco. Proportions of reconstituted tobacco of 15% to 25% are usual.
- cigarettes of the invention some or all of the reconstituted tobacco normally used in the blend may be omitted from the blend, and instead used to provide the inner wrapper. In this way a cigarette of entirely conventional overall tobacco composition is provided, which will smoke in the same way and with the same taste to the smoker as the conventional cigarette, but which exhibits reduced sidestream smoke emission.
- Figure 1 shows an embodiment of a filter cigarette according to the invention
- Figure 2 is a cross-section on line II-II of Figure 1.
- the cigarette of Figures 1 and 2 comprises a wrapped tobacco rod 10 having a filter mouthpiece.
- the filter mouthpiece is wrapped and conventionally affixed to the wrapped tobacco rod 10, by tipping 12.
- the wrapped tobacco rod 10 comprises a rod 14 of tobacco, filler wrapped by an inner wrapper 16 of reconstituted tobacco.
- the reconstituted tobacco wrapper 16 is itself overwrapped with an outer wrapper 18 of ordinary cigarette paper, containing from 0 to 2% potassium citrate.
- the outer paper wrapper 18 is glued along its longitudinal seam (not shown), whilst the seam of the wrapper 16 of reconstituted tobacco is not glued.
- the tobacco filler is of a conventional blend, and has a cut width of less than 1mm, most preferably between 0.7mm and 0.9mm.
- the packing density of the filler is between 200mg/ml and 300 mg/ml, particularly preferably about 240 mg/ml.
- Reconstituted tobacco preferably provides up to 25% of the total tobacco content.
- the wrapper 16 of the reconstituted tobacco may provide about half the reconstituted tobacco content of the cigarette.
- the puff count of the cigarette may be adjusted by choice of outer, paper, wrapper 18. It is preferably less than 13 and, in commercial cigarettes, preferably between 7 and 10, most preferably about 8 or 9.
- the following table shows a comparison between the mainstream and sidestream smoke compositions of three cigarettes (C1, C2, C3) according to the invention and one conventional cigarette (C4).
- All four cigarettes contain the same amount of the same total amount of tobacco wrapped in the same outer wrapper, and use the same filter, but C1, C2 and C3 include an inner wrapper of reconstituted tobacco.
- This wrapper replaces some of the reconstituted tobacco in the filler to give the same overall tobacco content in each cigarette.
- the packing density of the filler is about 240 mg/ml, and the cut width of the filler is 0.85mm.
- the reconstituted tobacco used varies between the three cigarettes.
- the cigarettes C1, C2, C3 of the invention have similar or slightly higher delivery levels in the mainstream smoke than the conventional cigarette C4, they have far lower delivery levels in the sidestream smoke.
- the present invention provides a cigarette which exhibits much lower delivery levels in the sidestream smoke than is expected based on mainstream smoke delivery levels.
Landscapes
- Cigarettes, Filters, And Manufacturing Of Filters (AREA)
Abstract
A cigarette exhibiting reduced levels of sidestream smoke emission comprises a tobacco rod 14 wrapped in an inner wrapper 16 of reconstituted tobacco rod and an outer wrapper 18 of paper containing from 0 to 2% Potassium citrate. Preferably the cigarette includes filter tip 12.
Description
- The invention relates to an improved cigarette. Cigarettes of the invention show reduced sidestream smoke emission. Recently, considerable effort has gone into the development of cigarettes show low levels of sidestream smoke emission, but with limited success. It is desirable that a cigarette has a conventional appearance and taste to the smoker, as well as allowing the manufacturer flexibility in the matters of composition of the tobacco charge, type of filter, if any, used, ventilation level, puff count and dimensions of the cigarette.
- One solution proposed to reduce sidestream smoke emission is to employ as the wrapper for the tobacco rod of the cigarette a paper impregnated with an agent which reduces sidestream smoke emission. Such a cigarette is disclosed, for example, in US 4 721 120. The use of a treated rod wrapper with an untreated paper overwrap is disclosed in US 4 505 282. The use of treated wrappers, however, may lead the smoker to perceive the smoke of the cigarette as having an unusual flavour, which may be unacceptable.
- The present inventors have now surprisingly found that if an inner wrapper of reconstituted tobacco is employed between the tobacco rod and the outer paper wrapper, sidestream smoke emission is reduced.
- According to the invention there is provided a cigarette comprising a rod of smoking material filler wrapped in an inner wrapper of reconstituted tobacco and an outer wrapper of paper, the outer wrapper including from 0 to 2% alkali metal salt such as Potassium citrate.
- Cigarettes according to the invention may be plain or have a filter tip.
- By reconstituted tobacco is meant a sheet material composed of tobacco material and a binder. No additives are normally included in reconstituted tobacco which may not also be used on conventional tobacco.
- As is well known, conventional tobacco blends for cigarettes may contain reconstituted tobacco, cut to about the same size as conventional tobacco. Proportions of reconstituted tobacco of 15% to 25% are usual.
- In cigarettes of the invention, some or all of the reconstituted tobacco normally used in the blend may be omitted from the blend, and instead used to provide the inner wrapper. In this way a cigarette of entirely conventional overall tobacco composition is provided, which will smoke in the same way and with the same taste to the smoker as the conventional cigarette, but which exhibits reduced sidestream smoke emission.
- The invention will be further described, by way of example, with reference to the drawings, in which:
- Figure 1 shows an embodiment of a filter cigarette according to the invention; and
- Figure 2 is a cross-section on line II-II of Figure 1.
- The cigarette of Figures 1 and 2 comprises a wrapped
tobacco rod 10 having a filter mouthpiece. The filter mouthpiece is wrapped and conventionally affixed to the wrappedtobacco rod 10, by tipping 12. - The wrapped
tobacco rod 10 comprises arod 14 of tobacco, filler wrapped by aninner wrapper 16 of reconstituted tobacco. The reconstitutedtobacco wrapper 16 is itself overwrapped with anouter wrapper 18 of ordinary cigarette paper, containing from 0 to 2% potassium citrate. Theouter paper wrapper 18 is glued along its longitudinal seam (not shown), whilst the seam of thewrapper 16 of reconstituted tobacco is not glued. - Preferably, the tobacco filler is of a conventional blend, and has a cut width of less than 1mm, most preferably between 0.7mm and 0.9mm.
- Preferably the packing density of the filler is between 200mg/ml and 300 mg/ml, particularly preferably about 240 mg/ml.
- Reconstituted tobacco preferably provides up to 25% of the total tobacco content. The
wrapper 16 of the reconstituted tobacco may provide about half the reconstituted tobacco content of the cigarette. - The puff count of the cigarette may be adjusted by choice of outer, paper,
wrapper 18. It is preferably less than 13 and, in commercial cigarettes, preferably between 7 and 10, most preferably about 8 or 9. - The following table shows a comparison between the mainstream and sidestream smoke compositions of three cigarettes (C1, C2, C3) according to the invention and one conventional cigarette (C4).
- All four cigarettes contain the same amount of the same total amount of tobacco wrapped in the same outer wrapper, and use the same filter, but C1, C2 and C3 include an inner wrapper of reconstituted tobacco. This wrapper replaces some of the reconstituted tobacco in the filler to give the same overall tobacco content in each cigarette. The packing density of the filler is about 240 mg/ml, and the cut width of the filler is 0.85mm. The reconstituted tobacco used varies between the three cigarettes.
- It can be seen from the table that the cigarettes C1, C2, C3 of the invention have similar or slightly higher delivery levels in the mainstream smoke than the conventional cigarette C4, they have far lower delivery levels in the sidestream smoke.
- Thus, the present invention provides a cigarette which exhibits much lower delivery levels in the sidestream smoke than is expected based on mainstream smoke delivery levels.
Claims (10)
- A cigarette comprising a rod (14) of smoking material filler wrapped in an inner wrapper (16) of reconstituted tobacco and an outer wrapper (18) of paper, the outer wrapper including from 0 to 2% alkali metal salt, preferably potassium citrate.
- A cigarette according to claim 1 which the filler is tobacco.
- A cigarette according to claim 1 or 2 in which reconstituted tobacco provides up to 25% of the total smoking material the cigarette.
- A cigarette according to any preceding claim which the inner wrapper (16) provides about half the reconstituted tobacco content of the cigarette.
- A cigarette according to any preceding claim which the thickness of the inner wrapper (16) is about twice that of the outer wrapper.
- A cigarette according to any preceding claim which the filler has a packing density of between 200 and 300 mg/ml, preferably 240 mg/ml.
- A cigarette according to any preceding claim: having a puff count of less than 13, preferably of between 7 and 10 and most preferably of between 8 and 9.
- A cigarette according to any preceding claim in which the smoking material is a conventional cigarette tobacco blend.
- A cigarette according to any preceding claim in which the cut width of the filler is less than 1mm, preferably between 0.7mm and 0.9mm.
- A filter cigarette according to any preceding claim.
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
GB8928289 | 1989-12-14 | ||
GB898928289A GB8928289D0 (en) | 1989-12-14 | 1989-12-14 | Improved cigarette |
Publications (1)
Publication Number | Publication Date |
---|---|
EP0432927A1 true EP0432927A1 (en) | 1991-06-19 |
Family
ID=10667956
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP90312761A Withdrawn EP0432927A1 (en) | 1989-12-14 | 1990-11-23 | Improved cigarette |
Country Status (4)
Country | Link |
---|---|
EP (1) | EP0432927A1 (en) |
FI (1) | FI906159A (en) |
GB (1) | GB8928289D0 (en) |
NO (1) | NO905381L (en) |
Cited By (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
EP0495567A2 (en) * | 1991-01-05 | 1992-07-22 | Rothmans, Benson & Hedges Inc. | Novel smoking product |
US6345625B1 (en) | 1997-12-06 | 2002-02-12 | Kar Eng Chew | Filter for secondary smoke and smoking articles incorporating the same |
WO2012093166A1 (en) * | 2011-01-07 | 2012-07-12 | British American Tobacco (Investments) Limited | Smoking article |
GB2492086A (en) * | 2011-06-20 | 2012-12-26 | British American Tobacco Co | Smoking article with additional tobacco patch |
CN103711029A (en) * | 2013-12-20 | 2014-04-09 | 华南理工大学 | Method for manufacturing aroma-increasing moisture retention cigarette paper |
Citations (8)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US2733720A (en) * | 1956-02-07 | apfttf papfp wpappfp | ||
FR2163008A5 (en) * | 1971-11-24 | 1973-07-20 | Olin Corp | |
US4225636A (en) * | 1979-03-08 | 1980-09-30 | Olin Corporation | High porosity carbon coated cigarette papers |
US4231377A (en) * | 1978-08-30 | 1980-11-04 | Olin Corporation | Wrapper for smoking articles containing magnesium oxide |
GB2069310A (en) * | 1980-02-20 | 1981-08-26 | Molins Ltd | Manufacture of cigarettes |
EP0085494A2 (en) * | 1982-01-15 | 1983-08-10 | R.J. Reynolds Tobacco Company | A smoking article having reduced sidestream smoke |
EP0133575A1 (en) * | 1983-08-08 | 1985-02-27 | Kimberly-Clark Corporation | Reduced ignition proclivity smoking article wrapper and smoking article |
EP0290911A2 (en) * | 1987-05-15 | 1988-11-17 | R.J. Reynolds Tobacco Company | Smoking article |
-
1989
- 1989-12-14 GB GB898928289A patent/GB8928289D0/en active Pending
-
1990
- 1990-11-23 EP EP90312761A patent/EP0432927A1/en not_active Withdrawn
- 1990-12-12 NO NO90905381A patent/NO905381L/en unknown
- 1990-12-13 FI FI906159A patent/FI906159A/en not_active Application Discontinuation
Patent Citations (8)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US2733720A (en) * | 1956-02-07 | apfttf papfp wpappfp | ||
FR2163008A5 (en) * | 1971-11-24 | 1973-07-20 | Olin Corp | |
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 |
GB2069310A (en) * | 1980-02-20 | 1981-08-26 | Molins Ltd | Manufacture of cigarettes |
EP0085494A2 (en) * | 1982-01-15 | 1983-08-10 | R.J. Reynolds Tobacco Company | A smoking article having reduced sidestream smoke |
EP0133575A1 (en) * | 1983-08-08 | 1985-02-27 | Kimberly-Clark Corporation | Reduced ignition proclivity smoking article wrapper and smoking article |
EP0290911A2 (en) * | 1987-05-15 | 1988-11-17 | R.J. Reynolds Tobacco Company | Smoking article |
Cited By (7)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
EP0495567A2 (en) * | 1991-01-05 | 1992-07-22 | Rothmans, Benson & Hedges Inc. | Novel smoking product |
EP0495567B1 (en) * | 1991-01-05 | 1999-07-14 | Rothmans, Benson & Hedges Inc. | Novel cigarette |
US6345625B1 (en) | 1997-12-06 | 2002-02-12 | Kar Eng Chew | Filter for secondary smoke and smoking articles incorporating the same |
WO2012093166A1 (en) * | 2011-01-07 | 2012-07-12 | British American Tobacco (Investments) Limited | Smoking article |
GB2492086A (en) * | 2011-06-20 | 2012-12-26 | British American Tobacco Co | Smoking article with additional tobacco patch |
CN103711029A (en) * | 2013-12-20 | 2014-04-09 | 华南理工大学 | Method for manufacturing aroma-increasing moisture retention cigarette paper |
CN103711029B (en) * | 2013-12-20 | 2015-07-01 | 华南理工大学 | Method for manufacturing aroma-increasing moisture retention cigarette paper |
Also Published As
Publication number | Publication date |
---|---|
GB8928289D0 (en) | 1990-02-21 |
FI906159A0 (en) | 1990-12-13 |
FI906159A (en) | 1991-06-15 |
NO905381L (en) | 1991-06-17 |
NO905381D0 (en) | 1990-12-12 |
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Legal Events
Date | Code | Title | Description |
---|---|---|---|
PUAI | Public reference made under article 153(3) epc to a published international application that has entered the european phase |
Free format text: ORIGINAL CODE: 0009012 |
|
AK | Designated contracting states |
Kind code of ref document: A1 Designated state(s): AT BE CH DE DK ES FR GB GR IT LI LU NL SE |
|
17P | Request for examination filed |
Effective date: 19910710 |
|
STAA | Information on the status of an ep patent application or granted ep patent |
Free format text: STATUS: THE APPLICATION HAS BEEN WITHDRAWN |
|
18W | Application withdrawn |
Withdrawal date: 19921019 |