EP3167727B1 - Article à fumer - Google Patents

Article à fumer Download PDF

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Publication number
EP3167727B1
EP3167727B1 EP15003263.9A EP15003263A EP3167727B1 EP 3167727 B1 EP3167727 B1 EP 3167727B1 EP 15003263 A EP15003263 A EP 15003263A EP 3167727 B1 EP3167727 B1 EP 3167727B1
Authority
EP
European Patent Office
Prior art keywords
smoking article
mouth
filter section
article according
lateral area
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.)
Active
Application number
EP15003263.9A
Other languages
German (de)
English (en)
Other versions
EP3167727A1 (fr
Inventor
Thomas Pienemann
Thomas Hühne
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
Reemtsma 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
Application filed by Reemtsma Cigarettenfabriken GmbH filed Critical Reemtsma Cigarettenfabriken GmbH
Priority to EP15003263.9A priority Critical patent/EP3167727B1/fr
Priority to ES15003263T priority patent/ES2862524T3/es
Priority to PL15003263T priority patent/PL3167727T3/pl
Priority to TW105132838A priority patent/TWI652996B/zh
Priority to PCT/EP2016/076207 priority patent/WO2017084866A1/fr
Publication of EP3167727A1 publication Critical patent/EP3167727A1/fr
Application granted granted Critical
Publication of EP3167727B1 publication Critical patent/EP3167727B1/fr
Active legal-status Critical Current
Anticipated expiration legal-status Critical

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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
    • A24D3/04—Tobacco smoke filters characterised by their shape or structure
    • A24D3/048—Tobacco smoke filters characterised by their shape or structure containing additives

Definitions

  • the invention relates to a smoking article comprising a smokable rod and a dual filter, which can provide an improved appearance from the filter end and an improved filtration effect.
  • US 4 256 122 A discloses a cigarette including a mono filter comprising longitudinal flutes at its lateral area, which extend from the mouth-sided filter end and are visible at this end.
  • the tipping which connects the filter to the tobacco rod and covers the flutes, is provided with ventilation holes in the region of the flutes so that the flutes are vented.
  • DE 34 03 281 A discloses a cigarette including a dual filter.
  • the mouth-sided filter section comprises a cellulose acetate filter core surrounded by a non-porous wrapping provided with longitudinally extending corrugations.
  • the rod-sided filter section includes cellulose acetate and activated carbon as an adsorbent. Both filter sections are connected to each other by a common connecting wrapper.
  • a non-porous tipping paper forms the outermost layer and attaches the dual filter to the tobacco rod.
  • the flutes formed by the corrugations are vented by a plurality of ventilation holes.
  • the flutes formed at the lateral area of the mouth-sided filter region act as channels communicating, via the ventilation holes, with the ambient air so that air diluting the tobacco smoke directly enters the smoker's mouth. This might induce a less pleasant impression.
  • mono filters which comprise a plurality of flutes arranged at the lateral area of the filter.
  • the flutes emerge from the mouth-sided end of the filter and run longitudinally, but do not extend up to the other end of the filter.
  • the flutes are embossed in an inner paper wrap.
  • An additional outer plug wrap can be standard or porous.
  • Such filters are marketed by Essentra Filter Products under the trade name "Combined Performance SuperiorTM Filter”.
  • Another product marketed by Essentra, under the trade name "Combined Performance SuperiorTM Dual Filter” is a dual filter which comprises the mono filter mentioned before plus a rod-sided filter segment including cellulose acetate and activated carbon as an adsorbent. In both cases, ventilation holes are not provided.
  • EP 2 265 137 B discloses a composite material formed of cellulose acetate and precipitated silica, which can be used, e.g., for liquid or gas filtration or in cigarette filters.
  • the object of the invention is the provision of a smoking article that combines a distinctive appearance at the mouth-sided end with a high filtration and gas phase-reducing performance, without exhibiting the unpleasant air dilution effect mentioned above.
  • the smoking article according to the invention comprises a smokable rod (e.g. a tobacco rod wrapped with cigarette paper) and a dual filter.
  • the filter includes a rod-sided filter section, which comprises a filtering material and an adsorbent, and a mouth-sided filter section.
  • the mouth-sided filter section extends from a mouth-sided first end to a second end, wherein a first lateral area starts at the first end and extends up to some intermediate circumferential line, while a second lateral area extends from that line to the second end of the mouth-sided filter section.
  • the mouth-sided filter section comprises a filtering material, e.g. cellulose acetate.
  • a plurality of flutes (channels) is arranged at the first lateral area, i.e.
  • the dual filter does not comprise ventilation holes in addition to those arranged at the second lateral area of the mouth-sided filter section.
  • the flutes start at the first end of the mouth-sided filter section, i.e. the mouth-sided end of the smoking article, they are visible at this end and provide a distinctive appearance to the smoking article.
  • the flutes are not a part of an air ventilation system because they are not vented by ventilation holes. Therefore, the level of ventilation of the smoking article according to the invention is not affected by a squeezing of the mouth-sided filter section in use (e.g. by the smoker's lips), which might block the channels formed by the flutes.
  • the mouth-sided filter section comprises an inner wrapper which, in the first lateral area, defines the flutes and, in the second lateral area, is flat. That inner wrapper may be corrugated, in the first lateral area, with corrugations forming crests and valleys, wherein the valleys are located in depressions of the filtering material of the mouth-sided filter section, thus defining the flutes.
  • the mouth-sided filter section may comprise another wrapper (in the following: plug wrap), which overlays the inner wrapper and is wrapped in a generally cylindrical shape. In this way, the corrugations and the plug wrap form channels. In the second lateral area, the plug wrap abuts the inner wrapper, generally over the total of the second lateral area.
  • the plug wrap can be glued to the inner wrapper, wherein preferably the channels are essentially kept free from glue.
  • the inner wrapper may be porous.
  • mainstream smoke diluted by air entering into the mouth-sided filter section through the ventilation holes is drawn through the filtering material of the mouth-sided filter section, but is also able to enter the channels through the porous inner wrapper, wherein it is filtered by the material (e.g., paper) of the inner wrapper before it flows downstream, largely unimpeded and without further dilution, through the flutes or channels to the smoker's mouth.
  • the rod-sided filter section and the mouth-sided filter section can be connected to each other by a connecting wrapper.
  • the plug wrap mentioned before can be taken as the connecting wrapper, but preferably a further wrapper is used, which is wrapped about the plug wrap of the mouth-sided filter section and the lateral face of the rod-sided filter section when both filter sections are placed end-to-end.
  • the filtering material and the adsorbent of the rod-sided filter section may be wrapped in an independent plug wrap as well, which constitutes the lateral face of the rod-sided filter section and is overwrapped by the connecting wrapper.
  • a tipping may be used to connect the dual filter to the smokable rod.
  • the tipping is made of paper, but other materials are conceivable as well.
  • the connecting wrapper and/or the tipping are non-porous, i.e. the material used for the connecting wrapper and/or the tipping is inherently non-porous or has a very low porosity. In this case, ambient air can enter the dual filter when used virtually exclusively through the ventilation holes. If the connecting wrapper and/or the tipping are non-porous, the choice of the porosity (e.g., high or very low) of any plug wrap will not have a particular effect.
  • the filter ventilation may be, e.g., at least 20% or at least 40%.
  • the ventilation holes are laser-perforated.
  • Laser-perforated ventilation holes can be prepared online during manufacture of the smoking articles on a cigarette maker after a dual filter has been attached to a respective tobacco rod on a combiner and after application of a tipping. Generally, the laser beam penetrates the tipping and the connecting wrapper as well as the plug wrap and the inner wrapper of the mouth-sided filter section.
  • the adsorbent in the rod-sided filter section is a composite material containing silica, e.g. prepared as porous granules containing a cellulose acetate/silica mixture.
  • silica e.g. prepared as porous granules containing a cellulose acetate/silica mixture.
  • Silica has good adsorbent properties, and the cellulose acetate of the granules improves the adhesion of the granules inside the filtering material (e.g., cellulose acetate) of the rod-sided filter section.
  • Figure 1 shows an embodiment of a smoking article (designated by 1) in a schematic three-dimensional partial view.
  • the smoking article 1 comprises a tobacco rod 2 wrapped with cigarette paper, to which a dual filter 4 is attached.
  • a dual filter 4 includes a rod-sided filter section 6 and a mouth-sided filter section 8.
  • the rod-sided filter section 6 comprises a filtering material and an adsorbent and is wrapped with an individual plug wrap, which is not shown in detail in Figure 1 .
  • cellulose acetate is used as the filtering material.
  • the adsorbent is silica contained in porous granules which also comprise cellulose acetate. Such granules are known from, e.g., EP 2 265 137 B1 .
  • the mouth-sided filter section 8 includes a filtering material 10 (e.g. cellulose acetate) and extends from a first end 12, which is the mouth-sided end of the dual filter 4, to a second end 13.
  • Figure 1 shows an intermediate circumferential line 14, as a dashed line, which is drawn to divide the lateral area of the mouth-sided filter section 8 into a first lateral area 16 (extending from the first end 12 to the intermediate circumferential line 14) and a second lateral area 17 (extending from the intermediate circumferential line 14 to the second end 13).
  • the inner wrapper 22 is wrapped about the mouth-sided filter section 8.
  • the inner wrapper 22 is corrugated with corrugations forming valleys 24 and crests 26 wherein the valleys 24 correspond to the depressions 20, while the crests 26 stay at the level of the original surface of the filtering material 10, which is the level of the generally cylindrical second lateral area 17.
  • the inner wrapper 22 is made of a porous paper.
  • the mouth-sided filter section 8 comprises another wrapper 28 (plug wrap), which overlays the inner wrapper 22 and is wrapped in a generally cylindrical shape.
  • the plug wrap 28 is made of a porous paper glued to the inner wrapper 22 in the area of the crests 26 and the second lateral area 17. The glue generally does not enter the valleys 24. In this way, the valleys 24 of the inner wrapper 22 in the depressions 20 in combination with the overlaying parts of the plug wrap 28 form a plurality of channels (flutes) extending at the first lateral area 16 of the mouth-sided filter section 8.
  • the rod-sided filter section 6 comprises its own plug wrap (not separately shown in Figure 1 ).
  • the mouth-sided filter section 8 and the rod-sided filter section 6 are connected to each other by a connecting wrapper (not shown in Figure 1 ), which facilitates the assemblage of the dual filter 4.
  • the latter plug wrap and the connecting wrapper may be made of porous or non-porous paper.
  • the dual filter 4 is connected to the tobacco rod 2 by means of a tipping 30, which is glued to the outer faces of the dual filter 4 and the filter-sided end area of the tobacco rod 2.
  • the tipping 30 is made of a non-porous material or a material having a low or very low porosity, e.g. a paper material.
  • a plurality of ventilation holes 32 is arranged at the second lateral area 17 of the mouth-sided filter section 8, and only in this area, so that the channels or flutes defined by the depressions 20 are not vented.
  • the ventilation holes 32 are arranged on one circumferential line. Other patterns of ventilation holes are conceivable as well.
  • the ventilation holes 32 can be prepared by an online laser perforation technique and extend through all layers of wrapping, i.e. through the tipping 30, through the connecting wrapper not shown in Figure 1 , through the plug wrap 28 and through the inner wrapper 22. In this way, the ventilation air directly enters into the filtering material 10.
  • mainstream smoke diluted by the ventilation air can stream not only through the filtering material 10 into the user's mouth, but also from the filtering material 10 through the porous inner wrapper 22 and via the channels defined by the depressions 20.

Landscapes

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

Claims (13)

  1. Article à fumer, comprenant une tige fumable (2) et un filtre double (4) comportant
    - une section de filtre côté tige (6) comprenant un matériau filtrant et un adsorbant, et
    - une section de filtre côté bouche (8) présentant une première extrémité côté bouche (12) et une seconde extrémité (13), présentant une première surface latérale (16) commençant à la première extrémité (12) et une seconde surface latérale (17) se terminant à la seconde extrémité (13), et comprenant un matériau filtrant (10), une pluralité de cannelures (20) étant agencées uniquement sur la première surface latérale (16), qui s'étendent depuis la première extrémité (12) et sont orientées de manière généralement longitudinale,
    une pluralité de trous d'aération (32) étant agencés sur la seconde surface latérale (17) et en ce que les cannelures (20) ne sont pas aérées par des trous d'aération agencés sur la première surface latérale (16), caractérisé en ce que
    le filtre double (4) ne comprend pas de trous d'aération en plus de ceux agencés sur la seconde surface latérale (17) de la section de filtre côté bouche (8).
  2. Article à fumer selon la revendication 1, caractérisé en ce que la section de filtre côté bouche (8) comprend une enveloppe intérieure (22) qui, dans la première surface latérale (16), définit les cannelures (20) et, dans la seconde surface latérale (17), est plate.
  3. Article à fumer selon la revendication 2, caractérisé en ce que l'enveloppe intérieure (22), dans la première surface latérale (16), est ondulée avec des ondulations formant des crêtes (26) et des vallées (24), les vallées (24) étant situées dans des dépressions du matériau filtrant (10) de la section de filtre côté bouche (8), définissant ainsi les cannelures (20).
  4. Article à fumer selon la revendication 2 ou 3, caractérisé en ce que la section de filtre côté bouche (8) comprend une autre enveloppe (28), qui recouvre l'enveloppe intérieure (22) et est enveloppée en une forme généralement cylindrique.
  5. Article à fumer selon une des revendications 2 à 4, caractérisé en ce que l'enveloppe intérieure (22) est poreuse.
  6. Article à fumer selon une des revendications 1 à 5, caractérisé en ce que la section de filtre côté tige (6) et la section de filtre côté bouche (8) sont raccordées l'une à l'autre par une enveloppe de raccordement.
  7. Article à fumer selon une des revendications 1 à 6, caractérisé par une manchette (30) raccordant le filtre double (4) à la tige fumable (2).
  8. Article à fumer selon la revendication 6 ou 7, caractérisé en ce que l'enveloppe de raccordement et/ou la manchette (30) sont non poreuses.
  9. Article à fumer selon une des revendications 1 à 8, caractérisé en ce que l'aération du filtre est d'au moins 20 %.
  10. Article à fumer selon une des revendications 1 à 8, caractérisé en ce que l'aération du filtre est d'au moins 40%.
  11. Article à fumer selon une des revendications 1 à 10, caractérisé en ce que les trous d'aération (32) sont perforés au laser.
  12. Article à fumer selon une des revendications 1 à 11, caractérisé en ce que l'adsorbant dans la section de filtre côté tige (6) est un matériau composite contenant de la silice.
  13. Article à fumer selon la revendication 12, caractérisé en ce que l'adsorbant comprend des granulés poreux contenant un mélange d'acétate de cellulose et de silice.
EP15003263.9A 2015-11-16 2015-11-16 Article à fumer Active EP3167727B1 (fr)

Priority Applications (5)

Application Number Priority Date Filing Date Title
EP15003263.9A EP3167727B1 (fr) 2015-11-16 2015-11-16 Article à fumer
ES15003263T ES2862524T3 (es) 2015-11-16 2015-11-16 Artículo de fumar
PL15003263T PL3167727T3 (pl) 2015-11-16 2015-11-16 Artykuł do palenia
TW105132838A TWI652996B (zh) 2015-11-16 2016-10-12 吸煙物品
PCT/EP2016/076207 WO2017084866A1 (fr) 2015-11-16 2016-10-31 Article à fumer

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
EP15003263.9A EP3167727B1 (fr) 2015-11-16 2015-11-16 Article à fumer

Publications (2)

Publication Number Publication Date
EP3167727A1 EP3167727A1 (fr) 2017-05-17
EP3167727B1 true EP3167727B1 (fr) 2020-12-30

Family

ID=54608234

Family Applications (1)

Application Number Title Priority Date Filing Date
EP15003263.9A Active EP3167727B1 (fr) 2015-11-16 2015-11-16 Article à fumer

Country Status (5)

Country Link
EP (1) EP3167727B1 (fr)
ES (1) ES2862524T3 (fr)
PL (1) PL3167727T3 (fr)
TW (1) TWI652996B (fr)
WO (1) WO2017084866A1 (fr)

Family Cites Families (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3768489A (en) * 1970-10-05 1973-10-30 Eastman Kodak Co Tobacco smoke filter
US4256122A (en) 1979-04-11 1981-03-17 Brown & Williamson Tobacco Corporation Cigarette filter
US4637409A (en) * 1981-05-07 1987-01-20 American Filtrona Corporation Tobacco smoke filter and method and apparatus for making same
DE3403281C2 (de) 1984-01-31 1994-11-17 Bat Cigarettenfab Gmbh Filter
US4708150A (en) 1986-08-25 1987-11-24 Brown & Williamson Tobacco Corporation Cigarette filter
KR101538002B1 (ko) * 2006-05-22 2015-07-20 필트로나 인터내셔날 리미티드 담배 연기 필터
FR2928565B1 (fr) 2008-03-14 2012-08-31 Rhodia Operations Materiau composite de cohesion elevee, procede de preparation et utilisations, notamment dans les filtres a cigarettes.
DE102008056384B4 (de) * 2008-11-10 2017-03-30 British American Tobacco (Germany) Gmbh Multifilter für einen Rauchartikel
GB201213786D0 (en) * 2012-08-01 2012-09-12 Filtrona Filter Prod Dev Co Tobacco smoke filter

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
None *

Also Published As

Publication number Publication date
TW201720317A (zh) 2017-06-16
TWI652996B (zh) 2019-03-11
EP3167727A1 (fr) 2017-05-17
WO2017084866A1 (fr) 2017-05-26
PL3167727T3 (pl) 2021-07-12
ES2862524T3 (es) 2021-10-07

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