EP0481596B1 - Bout filtre pour articles à fumer - Google Patents
Bout filtre pour articles à fumer Download PDFInfo
- Publication number
- EP0481596B1 EP0481596B1 EP91307950A EP91307950A EP0481596B1 EP 0481596 B1 EP0481596 B1 EP 0481596B1 EP 91307950 A EP91307950 A EP 91307950A EP 91307950 A EP91307950 A EP 91307950A EP 0481596 B1 EP0481596 B1 EP 0481596B1
- Authority
- EP
- European Patent Office
- Prior art keywords
- filter
- mouthpiece
- tube
- cigarette
- rod
- 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.)
- Revoked
Links
Images
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
Definitions
- the present invention relates to an improved filter mouthpiece for a smoking article, such as a cigarette, in particular a filter mouthpiece having a hollow tube extending axially therethrough, and to a cigarette provided with such a mouthpiece, see EP-A-0 295 835.
- the resistance to draw and air ventilation, if any, of the combined tobacco rod and filter mouthpiece stay substantially the same throughout the smoking of the cigarette.
- This has the effect of increasing the dry particulate matter (DPM) delivery with successive puffs.
- DPM dry particulate matter
- this may be undesirable since the first puff may be rather weak in taste and "impact” and, anyway, the taste and "impact” of the cigarette to the smoker will change as the cigarette is smoked.
- RTD resistance to draw
- a filter mouthpiece having a hollow tube extending from the tobacco end thereof toward, but ending short of, the mouth end.
- smoke passes along the tube toward the mouth end and impinges on the filter material at the mouth end of the tube.
- Components of the smoke condense on the filter material adjacent the open mouth end of the tube, blocking the tube and causing at least some of the smoke to pass through the surrounding filter material, so increasing the resistance to draw of the cigarette. This has the effect of evening out to some extent the DPM delivery as smoking progresses.
- a ventilated filter mouthpiece that is one in which ambient air is admitted to the filter by means of, for example, perforate tipping, provided with a perforate tube open at both ends, extending from the tobacco rod end of the filter toward but not so far as the mouth end of the filter.
- a filter mouthpiece With such a filter mouthpiece a cigarette can be provided which, when smoked, displays a substantially constant DPM (dry particulate matter) delivery.
- the mouthpiece can be configured to provide an initially high DPM delivery, which rapidly drops to a lower level and maintains that lower level substantially throughout the smoking of the cigarette.
- filter mouthpieces of the foregoing type may exhibit significant variation in smoking characteristics, which may not be commercially acceptable.
- the inventors have found that by providing a further filter portion, between the tobacco rod end of the tube and the tobacco rod, a mouthpiece exhibiting more consistent smoking properties, and thus greater commercial acceptability, results.
- a filter mouthpiece for a smoking article comprising a filter rendered generally air impermeable over its peripheral surface, the filter comprising a rod-end filter portion, a middle filter portion having a tube extending axially therethrough, the tube being open at both ends; and a mouth-end filter portion.
- the peripheral surface of the filter mouthpiece is rendered air transmissive over at least one discrete area to admit air into the filter.
- the filter portions may be three separate lengths of filter, or two or all three portions may be formed of the same length of filter.
- the rod end filter portion abuts the middle filter portion.
- the wall of the tube extending through the middle filter portion is pervious to smoke, and particularly preferably has holes for the passage of smoke.
- Preferred specifications for filter mouthpieces according to the invention are as follows:
- the filter portions may be of cellulose acetate, crepe paper or other suitable materials
- the tube may be of cellulose acetate, polypropylene or other suitable material.
- the tube may be formed by a bore through the middle filter portion, the walls of which are partially sealed, for example by heating, or completely sealed and subsequently perforated.
- Smoking articles such as cigarettes, having filter mouthpieces according to the invention, are also provided.
- the cigarette of the drawing comprises a wrapped tobacco rod 10 and a filter mouthpiece 12 according to a preferred embodiment of the invention.
- the mouthpiece 12 comprises a rod-end filter portion 14 abutting and in axial alignment with the tobacco rod 10, a middle filter portion 16 abutting and in axial adjustment with the rod-end portion 14, and a mouth-end filter portion 18 abutting and in axial alignment with the middle portion 16. All three filter portions are wrapped with an air permeable wrapper 20, and are joined together by an air permeable overwrap 22. They are attached to the tobacco rod 10 by a substantially air impermeable tipping 24, which extends around all three wrapped filter portions and the mouth end of the wrapped tobacco rod 10.
- the middle filter portion 16 has a tube 26 running down its centre, the walls of which are perforated by holes 28, and the ends of which are open. Preferably five diametrically opposed pairs of holes 28 are provided along the length of the tube 26.
- the tipping 24 has perforations 30 in the region of the middle filter portion 16, through which ambient air is admitted into the filter.
- a smoking article including a filter mouthpiece according to the invention When a smoking article including a filter mouthpiece according to the invention is smoked, smoke initially substantially by-passes the middle filter portion 16, travelling instead along the tube 26. The smoke is only filtered by the rod-end 14 and mouth-end 18 filter portions. As smoking progresses, DPM condenses in the mouth-end filter portion 18, adjacent the open end of the tube 26. In the case of a perforate tube, the smoke then leaves the tubes through the holes 28 nearest the mouth end of the tube, and is thus subjected to a higher degree of filtration. The holes 28 become blocked progressively, subjecting to the smoke to progressively higher degrees of filtration.
- the DPM delivery against the puff number was determined for three cigarettes; a cigarette (C1) having a filter mouthpiece according to the invention with a perforate tube 26 (solid line); a cigarette (C2) having a filter mouthpiece according to the invention with an impervious tube 26 (chain line); and a reference cigarette (C4) having a standard filter mouthpiece (dotted line).
- Both the cigarettes having filter mouthpieces according to the invention exhibit a much flatter delivery profile than the standard cigarette, and the profile of the cigarette which has the filter mouthpiece with a perforate tube is somewhat flatter than that with an imperforate tube.
- Filter mouthpieces according to the invention exhibit greater consistency of delivery than those of EP 0 295 835, even through the latter exhibit a relatively flat delivery profile.
- Table 1 compares total particulate matter (TPM) delivery of a sample of 40 of each of four cigarettes: a cigarette (C1) having a filter mouthpiece according to the invention with a perforate tube 26; a cigarette (C2) having a filter mouthpiece according to the invention with an impervious tube 26; a cigarette (C3) having a filter mouthpiece according to EP 0 295 835, that is, a filter mouthpiece composed of rod-end and mouth-end filter portions only, with a perforate tube extending through the rod-end portion; and a reference cigarette (C4) having a standard cellulose acetate filter mouthpiece.
- Cigarettes C1, C2 and C4 are those whose delivery profiles were determined as discussed above. Smoke analysis was conducted according to ISO norm.
- cigarettes (C1) and (C2) equipped with filter mouthpieces according to this invention show significantly more consistent TPM deliveries than cigarettes (C3) having filter mouthpieces according to EP 0 295 835.
- the standard deviations in TPM delivery of both cigarettes (C1) and (C2), having filter mouthpieces according to the invention are closer to that of cigarette (C4), having a standard filter mouthpiece.
Landscapes
- Cigarettes, Filters, And Manufacturing Of Filters (AREA)
- Nozzles (AREA)
- Medicines Containing Plant Substances (AREA)
- Oscillators With Electromechanical Resonators (AREA)
- Surgical Instruments (AREA)
- Networks Using Active Elements (AREA)
Claims (9)
- Embout filtre (12) pour article à fumer comprenant un filtre (24) rendu de façon générale imperméable à l'air sur sa surface périphérique, le filtre comprenant : une portion de filtre côté tabac (14), une portion de filtre médiane (16) ayant un tube (26) la traversant axialement, le tube étant ouvert à ses deux extrémités, et une portion de filtre côté bouche (18).
- Embout filtre (12) selon la revendication 1, dans lequel la surface périphérique du filtre est rendue perméable à l'air au moins dans une zone réduite (30) pour laisser entrer l'air dans le filtre.
- Embout filtre (12) selon la revendication 1 ou la revendication 2, dans lequel la paroi du tube (26) est perméable à la fumée.
- Embout filtre (12) selon l'une quelconque des revendications précédentes, dans lequel la paroi du tube (26) est percée d'orifices (28) pour le passage de la fumée.
- Embout filtre (12) selon la revendication 4, dans lequel les orifices (28) sont disposés en paires opposées.
- Embout filtre (12) selon l'une quelconque des revendications précédentes, dans lequel les portions de filtre côté tabac (14), médiane (16) et côté bouche (18) sont des portions de filtre séparées.
- Embout filtre (12) selon l'une quelconque des revendications précédentes, dans lequel la portion de filtre côté tabac (14) a une longueur comprise entre 1 mm et 10 mm, de préférence entre 4 mm et 8 mm, de vive préférence égale à 6 mm.
- Article à fumer comprenant un embout filtre (12) selon l'une quelconque des revendications précédentes.
- Cigarette comprenant un embout filtre (12) selon l'une quelconque des revendications 1 à 7 en butée axiale contre une tige de tabac enveloppée (10).
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
GB9022530 | 1990-10-17 | ||
GB909022530A GB9022530D0 (en) | 1990-10-17 | 1990-10-17 | Filter mouthpiece for smoking articles |
Publications (2)
Publication Number | Publication Date |
---|---|
EP0481596A1 EP0481596A1 (fr) | 1992-04-22 |
EP0481596B1 true EP0481596B1 (fr) | 1994-01-05 |
Family
ID=10683853
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP91307950A Revoked EP0481596B1 (fr) | 1990-10-17 | 1991-08-30 | Bout filtre pour articles à fumer |
Country Status (9)
Country | Link |
---|---|
EP (1) | EP0481596B1 (fr) |
AT (1) | ATE99504T1 (fr) |
DE (1) | DE69100939T2 (fr) |
DK (1) | DK0481596T3 (fr) |
ES (1) | ES2047986T3 (fr) |
FI (1) | FI914887A (fr) |
GB (1) | GB9022530D0 (fr) |
NO (1) | NO177033C (fr) |
TR (1) | TR25451A (fr) |
Cited By (12)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US7878963B2 (en) | 2006-03-28 | 2011-02-01 | Philip Morris Usa Inc. | Smoking article with a restrictor |
US7987856B2 (en) | 2005-12-29 | 2011-08-02 | Philip Morris Usa Inc. | Smoking article with bypass channel |
US8235057B2 (en) | 2007-03-09 | 2012-08-07 | Philip Morris Usa Inc. | Smoking article with open ended filter and restrictor |
US8235056B2 (en) | 2006-12-29 | 2012-08-07 | Philip Morris Usa Inc. | Smoking article with concentric hollow core in tobacco rod and capsule containing flavorant and aerosol forming agents in the filter system |
US8240315B2 (en) | 2005-12-29 | 2012-08-14 | Philip Morris Usa Inc. | Smoking article with improved delivery profile |
US8353298B2 (en) | 2006-07-12 | 2013-01-15 | Philip Morris Usa Inc. | Smoking article with impaction filter segment |
US8353302B2 (en) | 2007-03-09 | 2013-01-15 | Philip Morris Usa Inc. | Smoking articles with restrictor and aerosol former |
US8424539B2 (en) | 2006-08-08 | 2013-04-23 | Philip Morris Usa Inc. | Smoking article with single piece restrictor and chamber |
US8424540B2 (en) | 2009-10-09 | 2013-04-23 | Philip Morris Usa Inc. | Smoking article with valved restrictor |
US8434499B2 (en) | 2009-10-09 | 2013-05-07 | Philip Morris Usa Inc. | Filter design for improving sensory profile of carbon filter-tipped smoking articles |
US8905037B2 (en) | 2009-10-15 | 2014-12-09 | Philip Morris Inc. | Enhanced subjective activated carbon cigarette |
US9138016B2 (en) | 2010-03-26 | 2015-09-22 | Philip Morris Usa Inc. | Smoking articles with significantly reduced gas vapor phase smoking constituents |
Families Citing this family (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US5435326A (en) * | 1993-07-27 | 1995-07-25 | R. J. Reynolds Tobacco Company | Controlled delivery smoking article and method |
GB0800216D0 (en) * | 2008-01-07 | 2008-02-13 | British American Tobacco Co | Smoking article |
WO2024142167A1 (fr) * | 2022-12-26 | 2024-07-04 | 日本たばこ産業株式会社 | Filtre d'inhalateur d'arôme et inhalateur d'arôme |
Family Cites Families (6)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
FR1446636A (fr) * | 1965-01-11 | 1966-07-22 | Rech S Tech Ets De | Procédé pour noyer des corps capillaires dans une matière de remplissage |
GB1527705A (en) * | 1976-03-01 | 1978-10-11 | Liggett & Myers Inc | Cigarette filter |
NL7712441A (nl) * | 1977-11-11 | 1979-05-15 | Laurens Sigaretten | Sigarettefilter en filtersigaret. |
GB2091078B (en) * | 1981-01-15 | 1984-11-21 | Filtrona Ltd | Ventilated cigarette filter |
GB8506594D0 (en) * | 1985-03-14 | 1985-04-17 | British American Tobacco Co | Smoking article filters |
GB8713904D0 (en) * | 1987-06-15 | 1987-07-22 | Tabac Fab Reunies Sa | Filter for smoking articles |
-
1990
- 1990-10-17 GB GB909022530A patent/GB9022530D0/en active Pending
-
1991
- 1991-08-30 AT AT91307950T patent/ATE99504T1/de not_active IP Right Cessation
- 1991-08-30 ES ES91307950T patent/ES2047986T3/es not_active Expired - Lifetime
- 1991-08-30 DE DE69100939T patent/DE69100939T2/de not_active Revoked
- 1991-08-30 DK DK91307950.5T patent/DK0481596T3/da active
- 1991-08-30 EP EP91307950A patent/EP0481596B1/fr not_active Revoked
- 1991-10-14 TR TR91/0970A patent/TR25451A/xx unknown
- 1991-10-16 FI FI914887A patent/FI914887A/fi not_active Application Discontinuation
- 1991-10-16 NO NO914064A patent/NO177033C/no unknown
Cited By (13)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US7987856B2 (en) | 2005-12-29 | 2011-08-02 | Philip Morris Usa Inc. | Smoking article with bypass channel |
US8240315B2 (en) | 2005-12-29 | 2012-08-14 | Philip Morris Usa Inc. | Smoking article with improved delivery profile |
US9060546B2 (en) | 2006-03-28 | 2015-06-23 | Philip Morris Usa Inc. | Smoking article with a restrictor |
US7878963B2 (en) | 2006-03-28 | 2011-02-01 | Philip Morris Usa Inc. | Smoking article with a restrictor |
US8353298B2 (en) | 2006-07-12 | 2013-01-15 | Philip Morris Usa Inc. | Smoking article with impaction filter segment |
US8424539B2 (en) | 2006-08-08 | 2013-04-23 | Philip Morris Usa Inc. | Smoking article with single piece restrictor and chamber |
US8235056B2 (en) | 2006-12-29 | 2012-08-07 | Philip Morris Usa Inc. | Smoking article with concentric hollow core in tobacco rod and capsule containing flavorant and aerosol forming agents in the filter system |
US8353302B2 (en) | 2007-03-09 | 2013-01-15 | Philip Morris Usa Inc. | Smoking articles with restrictor and aerosol former |
US8235057B2 (en) | 2007-03-09 | 2012-08-07 | Philip Morris Usa Inc. | Smoking article with open ended filter and restrictor |
US8424540B2 (en) | 2009-10-09 | 2013-04-23 | Philip Morris Usa Inc. | Smoking article with valved restrictor |
US8434499B2 (en) | 2009-10-09 | 2013-05-07 | Philip Morris Usa Inc. | Filter design for improving sensory profile of carbon filter-tipped smoking articles |
US8905037B2 (en) | 2009-10-15 | 2014-12-09 | Philip Morris Inc. | Enhanced subjective activated carbon cigarette |
US9138016B2 (en) | 2010-03-26 | 2015-09-22 | Philip Morris Usa Inc. | Smoking articles with significantly reduced gas vapor phase smoking constituents |
Also Published As
Publication number | Publication date |
---|---|
DE69100939D1 (de) | 1994-02-17 |
EP0481596A1 (fr) | 1992-04-22 |
NO914064D0 (no) | 1991-10-16 |
GB9022530D0 (en) | 1990-11-28 |
ATE99504T1 (de) | 1994-01-15 |
DK0481596T3 (da) | 1994-05-16 |
TR25451A (tr) | 1993-05-01 |
DE69100939T2 (de) | 1994-07-07 |
FI914887A (fi) | 1992-04-18 |
NO914064L (no) | 1992-04-21 |
FI914887A0 (fi) | 1991-10-16 |
NO177033C (no) | 1995-07-12 |
ES2047986T3 (es) | 1994-03-01 |
NO177033B (no) | 1995-04-03 |
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