EP0255114B1 - Filtercigarette - Google Patents

Filtercigarette Download PDF

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Publication number
EP0255114B1
EP0255114B1 EP87110936A EP87110936A EP0255114B1 EP 0255114 B1 EP0255114 B1 EP 0255114B1 EP 87110936 A EP87110936 A EP 87110936A EP 87110936 A EP87110936 A EP 87110936A EP 0255114 B1 EP0255114 B1 EP 0255114B1
Authority
EP
European Patent Office
Prior art keywords
filter
tobacco rod
filter element
cigarette
ventilation
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
EP87110936A
Other languages
German (de)
English (en)
French (fr)
Other versions
EP0255114A1 (de
Inventor
Paul-Georg Dr. Dipl.-Chem. Henning
Werner Dr. Dipl.-Phys. Schneider
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.)
British American Tobacco Germany GmbH
Original Assignee
British American Tobacco Germany GmbH
BAT 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
Family has litigation
First worldwide family litigation filed litigation Critical https://patents.darts-ip.com/?family=6306197&utm_source=google_patent&utm_medium=platform_link&utm_campaign=public_patent_search&patent=EP0255114(B1) "Global patent litigation dataset” by Darts-ip is licensed under a Creative Commons Attribution 4.0 International License.
Application filed by British American Tobacco Germany GmbH, BAT Cigarettenfabriken GmbH filed Critical British American Tobacco Germany GmbH
Publication of EP0255114A1 publication Critical patent/EP0255114A1/de
Application granted granted Critical
Publication of EP0255114B1 publication Critical patent/EP0255114B1/de
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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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

Definitions

  • the invention relates to a filter cigarette of the type specified in the preamble of claim 1.
  • Such a filter cigarette is known from the embodiment according to FIG. 3 of EP-A 101 173 and has a total of four main parts, namely a tobacco rod surrounded by a cigarette paper, a first filter element on the tobacco rod side, a second filter element on the mouth side and one between the two filter elements arranged hollow chamber.
  • the two filter elements and the hollow chamber are surrounded by wrapping paper; an air-impermeable covering paper surrounds the two filter elements and the hollow chamber and serves to fasten the filter to the tobacco rod;
  • a ventilation zone is formed in the covering paper and the covering.
  • the tobacco rod-side filter part effects the major part of the filter effect, namely in the range of 80 to 90% or more, and therefore consists of a tow material with a small single denier and a large total denier, while the Filter effect of the mouth-side filter element is relatively small.
  • the ventilation air enters the hollow chamber through the ventilation zone and is mixed there with the smoke flow, which has already been heavily filtered by the filter element on the tobacco rod side. This mixture then flows through the second, mouth-side filter element, which has only a relatively low filter effect, and from there reaches the smoker's mouth.
  • This structure is said to result in improved taste properties which can be attributed to the fact that the majority of the components of the smoke which influence the taste reach the mouth of the smoker, while the nicotine / condensate ratio is relatively high.
  • Such a filter cigarette provides a significantly more intense taste impression than according to DIN values, i.e. in terms of condensate and nicotine, same filter cigarettes with a ventilated cellulose acetate single filter or with a ventilated double filter without a mixing chamber.
  • the mixing or mixing of smoke and ventilation air in the hollow or mixing chamber does not produce a typical smoke pattern on the mouth side of the second filter element.
  • Smoking tests have shown that such patterns are undesirable; conventionally ventilated filters are a "white ring", which is formed by the ventilation air enveloping the smoke, as well as other patterns with separate guidance of air and smoke to the mouth end of the filter outlet, and "star-shaped patterns" for ventilation by a few large ones Perforation holes. Other smoke patterns have also been observed and criticized.
  • the invention is therefore based on the object of providing a filter cigarette of the type specified, in which the disadvantages mentioned above do not occur.
  • a filter cigarette which, while maintaining the advantages of the known filter cigarette, ensures a better taste impression without increasing the nicotine / condensate ratio above 1.0.
  • the advantages achieved by the invention are based on the design of a special filter cigarette construction while adapting the essential parameters, namely the specifications of the tobacco rod and the dimensions and properties of the two filter elements and the mixing chamber, in the direction of an overall construction which on the one hand has the taste impression and on the other hand the condensate - Yield optimized.
  • the nicotine yield of the filter cigarette should be up to a maximum of 0.8 mg and the condensate yield of 1 to 8 mg, while maintaining a nicotine / condensate ratio of at most 1.0.
  • the desired, low packing density of the tobacco mixture of the tobacco rod should be in the range of 200 to 230 mg / ml.
  • the pull resistance of the tobacco rod should be as low as possible, i. that is, in the range of 45 to 65 mm WS. measured closed, in order to achieve the desired taste in cooperation with the triple filter.
  • the total length of the filter should be between 20 and 30 mm, with a total length of 21 mm with a diameter of 7.95 mm being preferred, similar to conventional filters, also for reasons of simplification of manufacture due to the use of the existing machines.
  • the degree of ventilation of this filter should be between 50 and 80%; he can by the appropriate design of the ventilation zone in Adjust the covering paper and the wrapping over the hollow chamber;
  • the ventilation zone is formed by a row of holes which is at least 10 mm from the mouth end of the filter; the holes can either be produced by laser radiation or mechanically on the finished cigarette and should be as large as possible. 1 to 30 holes can be used with good results with 15 to 25 holes in the ventilation line.
  • the more intense taste impression can only be recorded if the two stacked filter papers, i.e. the air-impermeable or air-impermeable wrapping paper and the air-impermeable covering paper, are perforated together mechanically or with laser beams on the finished cigarette, with laser perforation being preferred.
  • the two filter elements should be at least 7 mm long and the hollow chamber 2 to 6 mm long.
  • the corresponding division takes into account the total length of this filter.
  • the first filter element on the takak strand should have a retention capacity of 60 to 80% and should consist of a cellulose acetate filter material with a Y cross-section and the lowest possible individual denier in the range from 1.5 to 2.5 dpf (denier per filament) in order to desired to achieve the highest possible retention; the total denier of this first filter element should be high, namely greater than 60,000
  • the second, mouth-side filter element also contains cellulose acetate filter material, but from fibers that are as coarse as possible, i. that is, with a relatively high single denier on the order of 8 to 12 dpf.
  • the cross-sectional shape only plays a secondary role, i. that is, fibers with a round but also with a Y cross section can be used.
  • a relatively low total denier of 20,000 to 40,000 is aimed for.
  • the filter cigarette indicated generally by reference number 10, has a tobacco rod 12 surrounded by cigarette paper 11 and a filter 14 connected to the tobacco rod 12.
  • the packing density of the tobacco mixture of the tobacco rod 12 is low and is between 200 and 230 mg / ml.
  • the tensile resistance of the strand is also as low as possible and is between 45 and 65 mm WS, measured closed.
  • the cigarette paper 11 has a low to medium air permeability in the range of 15 to 40 Coresta units
  • the strand yield ratio nicotine / condensate of the tobacco mixture should be between 0.5 and 0.75.
  • the filter 14 consists of three separate parts, namely a first filter element 16 on the tobacco rod side, a second filter element 18 on the mouth side and a hollow chamber 20 formed between the two filter elements 16 and 18.
  • the two filter elements 16, 18 and the hollow chamber 20 are made of a wrapping paper 22 surrounded, which is air-impermeable in the illustrated embodiment.
  • the length of the wrapping paper 22 corresponds to the total length of the filter, that is to say the longitudinal dimensions of the two filter elements 16 and 18 and the hollow chamber 20.
  • An air-impermeable covering paper 24 surrounds the wrapping paper 22 and serves to fasten the actual "filter tips" made of the two filter elements 16, 18 and the hollow chamber 20 and the wrapping paper 22 to the tobacco rod 12, i. that is, the covering paper 24 extends somewhat over the tobacco rod 12, as can be seen from the figure.
  • Vent openings 26 are formed in the wrapping paper 22 as well as in the covering paper 24, which are indicated by dots in the figure.
  • These ventilation openings can be made mechanically or by laser perforation.
  • the wrapping paper 22 can also be permeable to air, but in any case it is necessary that the ventilation perforations created on the finished cigarette pass through both papers.
  • the ventilation openings 26 are arranged in a cross-sectional plane of the hollow chamber 20, i. that is, when the two papers 22, 24 are processed, they lie on one line.
  • the smoke flow indicated by the arrow flows from the tobacco rod 12 into the first filter element 16, which has a very high retention rate of 60 to 80% and a length of at least 7 mm.
  • This high retention performance can be achieved by using a cellulose acetate filter material with the lowest possible individual denier in the range from 1.5 to 2.5 dpf (denier per filament) with a Y cross section; the total denier of the he greater than 60,000.
  • the unrestricted part of the smoke flow flows from the first filter element 16 into the hollow chamber 20, into which ventilation air is sucked in via the ventilation openings 26 and mixed there with the smoke flow.
  • the hollow chamber should have a length of 2 to 6 mm and ensure a degree of ventilation of 50 to 80%, which is achieved by one to thirty holes, in particular fifteen to twenty-five holes 26, the individual holes 26 being as large as possible.
  • the mixture of smoke flow and ventilation air flows from the hollow chamber 20 into the second filter element 18, which likewise contains cellulose acetate filter material, but with fibers that are as coarse as possible, namely with a high individual denier in the order of 8 to 12 dpf.
  • the total denier of the second filter element 18 is relatively low and is in the range from 20,000 to 40,000. This allows a retention rate of 0 to 10% to be set.
  • the second filter element 18 should be at least 7 mm long, the division of the different partial lengths into the first filter element 16, the hollow chamber 20 and the second filter element 18 taking into account a total length of the filter 14 of 20 to 30 mm.
  • the first filter element 16 on the tobacco rod side had a length of 7 mm and consisted of cellulose acetate, produced from two filter tows with a Y cross section and a single denier of 2.1 dpf; each tow had a total denier of 36,000, so that the effective total denier of the filter element 16 can be set at 72,000.
  • the tensile resistance of the filter element 16 was 115 mm water column when the measurement was closed; the effective retention rate for the condensate including water was 65%.
  • the hollow chamber 20 had a length of 5 mm.
  • the second filter element 18 had a length of 9 mm and also consisted of cellulose acetate with a single denier of 8 dpf and a total denier of 28,000. Y-section fibers were also used here.
  • the effective degree of retention of the second filter element 18 was 3% and its tensile resistance was 9 mm WS, measured closed.
  • the wrapping paper 22 had a length of 21 mm, ie extended over the entire length of the filter 14. It consists of an air and smoke-impermeable material, namely a coated paper or an artificial film.
  • the topping paper 24 had a width of 29 mm, measured from the mouth end of the filter 14 to the boundary line of the topping paper 24 on the tobacco rod 12. It was also made of an air and smoke-impermeable material.
  • the two papers 22, 24 were provided by laser perforation online on the finished cigarette during the manufacture of the cigarette with a series of ventilation openings 26 which run in the circumferential direction of the filter element 14 and are located in the middle of the hollow chamber 20.
  • a degree of ventilation of 72% was set by appropriately designing the number and size of the ventilation openings 26 in the wrapping paper 22 and the covering paper 24.

Landscapes

  • Chemical & Material Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Materials Engineering (AREA)
  • Cigarettes, Filters, And Manufacturing Of Filters (AREA)
EP87110936A 1986-07-29 1987-07-28 Filtercigarette Expired - Lifetime EP0255114B1 (de)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE3625593 1986-07-29
DE19863625593 DE3625593A1 (de) 1986-07-29 1986-07-29 Filtercigarette

Publications (2)

Publication Number Publication Date
EP0255114A1 EP0255114A1 (de) 1988-02-03
EP0255114B1 true EP0255114B1 (de) 1990-07-25

Family

ID=6306197

Family Applications (1)

Application Number Title Priority Date Filing Date
EP87110936A Expired - Lifetime EP0255114B1 (de) 1986-07-29 1987-07-28 Filtercigarette

Country Status (3)

Country Link
EP (1) EP0255114B1 (tr)
DE (2) DE3625593A1 (tr)
ES (1) ES2017684B3 (tr)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US8066011B2 (en) 2003-09-30 2011-11-29 R. J. Reynolds Tobacco Company Filtered cigarette incorporating an adsorbent material
CN108169061A (zh) * 2017-11-28 2018-06-15 山东中烟工业有限责任公司 一种手工全叶卷雪茄烟吸阻检测方法
EP2773230B1 (en) 2011-11-03 2020-07-22 Acetate International LLC Products of high denier per filament and low total denier tow bands

Families Citing this family (16)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3837930C1 (tr) * 1988-11-09 1989-09-28 H.F. & Ph.F. Reemtsma Gmbh & Co, 2000 Hamburg, De
GR1000349B (el) * 1989-07-21 1992-06-25 Bat Cigarettenfab Gmbh Φίλτρο Σιγαρέττου.
GB8918556D0 (en) * 1989-08-15 1989-09-27 British American Tobacco Co Improvements relating to smoking articles
GB9003248D0 (en) * 1990-02-13 1990-04-11 Gallaher Ltd Filters for smoking rods
DE4118815C2 (de) * 1991-06-07 1996-02-01 Bat Cigarettenfab Gmbh Verfahren zur Herstellung eines Cigarettenfilters und nach diesem Verfahren hergestellter Cigarettenfilter
DE4332019C2 (de) * 1993-09-16 1996-06-13 Reemtsma H F & Ph Ventilierte Filtercigarette
US6206007B1 (en) * 1997-06-16 2001-03-27 Japan Tobacco Inc. Cigarette with a dual-structure filter
DE19746664A1 (de) * 1997-10-23 1999-05-06 Reemtsma H F & Ph Dünne Cigarette
DE19753193A1 (de) * 1997-11-21 1999-05-27 Reemtsma H F & Ph Biologisch abbaubarer Filter für Cigaretten
US6345625B1 (en) 1997-12-06 2002-02-12 Kar Eng Chew Filter for secondary smoke and smoking articles incorporating the same
US20050199251A1 (en) * 2002-08-08 2005-09-15 Susilo Wonowidjojo Method for producing filter cigarettes
GB2394394A (en) * 2002-10-23 2004-04-28 Filtrona Int Ltd Tobacco smoke filter
ATE532424T1 (de) † 2003-09-30 2011-11-15 Reynolds Tobacco Co R Filterzigarette mit adsorptionsmaterial
US7669604B2 (en) 2003-09-30 2010-03-02 R.J. Reynolds Tobacco Company Filtered cigarette incorporating an adsorbent material
CN106235405B (zh) * 2016-08-31 2023-06-09 云南中烟工业有限责任公司 一种可调节吸阻分布的卷烟滤嘴
CN110333177B (zh) * 2019-08-09 2021-07-13 中国烟草总公司郑州烟草研究院 一种基于卷烟纸透气度稳定的卷烟分段吸阻无损快速检测评价方法

Family Cites Families (13)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US298808A (en) * 1884-05-20 Carriage-bow
US2819720A (en) * 1955-07-01 1958-01-14 Burbig Henry Cigarette or cigar with filter
DE1794665U (de) * 1959-03-23 1959-08-27 Bock Manfred Zigarettenfilter mit nikotinkammer.
US3396733A (en) * 1966-03-23 1968-08-13 Lorillard Co P Cigarette tip
AT276194B (de) * 1967-04-06 1969-11-10 Burrus & Cie Filtermittel für Tabakrauch
US3847161A (en) * 1972-06-30 1974-11-12 D Morgenstern Filtered cigarettes
CA1096737A (en) * 1977-03-14 1981-03-03 Jan Van Tilburg Smoke filters
IT1149414B (it) * 1981-01-15 1986-12-03 Cigarette Components Ltd Filtro per sigaretta
GB2091078B (en) * 1981-01-15 1984-11-21 Filtrona Ltd Ventilated cigarette filter
GB2101466A (en) * 1981-07-06 1983-01-19 Filtrona Ltd Tobacco smoke filter
DE3205742C2 (de) * 1982-02-18 1986-07-17 B.A.T. Cigaretten-Fabriken Gmbh, 2000 Hamburg Cigarettenfilter
US4564030A (en) * 1982-07-16 1986-01-14 Loew's Theatres, Inc. Cigarette filter assembly
GB2126073B (en) * 1982-09-01 1986-06-18 Imp Group Plc Tipping assembly for an elongate smoking article

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US8066011B2 (en) 2003-09-30 2011-11-29 R. J. Reynolds Tobacco Company Filtered cigarette incorporating an adsorbent material
US9554594B2 (en) 2003-09-30 2017-01-31 R.J. Reynolds Tobacco Company Filtered cigarette incorporating an adsorbent material
EP2773230B1 (en) 2011-11-03 2020-07-22 Acetate International LLC Products of high denier per filament and low total denier tow bands
CN108169061A (zh) * 2017-11-28 2018-06-15 山东中烟工业有限责任公司 一种手工全叶卷雪茄烟吸阻检测方法

Also Published As

Publication number Publication date
DE3763929D1 (de) 1990-08-30
ES2017684B3 (es) 1991-03-01
EP0255114A1 (de) 1988-02-03
DE3625593A1 (de) 1988-02-04
DE3625593C2 (tr) 1989-05-03

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