EP2448437B1 - Filtre pour article à fumer - Google Patents

Filtre pour article à fumer Download PDF

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Publication number
EP2448437B1
EP2448437B1 EP10722084.0A EP10722084A EP2448437B1 EP 2448437 B1 EP2448437 B1 EP 2448437B1 EP 10722084 A EP10722084 A EP 10722084A EP 2448437 B1 EP2448437 B1 EP 2448437B1
Authority
EP
European Patent Office
Prior art keywords
filter
particulate material
wrapper
filter portion
smoking article
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
EP10722084.0A
Other languages
German (de)
English (en)
Other versions
EP2448437A1 (fr
Inventor
John Richardson
Peter Rex White
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 Investments Ltd
Original Assignee
British American Tobacco Investments Ltd
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 British American Tobacco Investments Ltd filed Critical British American Tobacco Investments Ltd
Publication of EP2448437A1 publication Critical patent/EP2448437A1/fr
Application granted granted Critical
Publication of EP2448437B1 publication Critical patent/EP2448437B1/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
    • A—HUMAN NECESSITIES
    • A24—TOBACCO; CIGARS; CIGARETTES; SIMULATED SMOKING DEVICES; SMOKERS' REQUISITES
    • A24C—MACHINES FOR MAKING CIGARS OR CIGARETTES
    • A24C5/00—Making cigarettes; Making tipping materials for, or attaching filters or mouthpieces to, cigars or cigarettes
    • A24C5/47—Attaching filters or mouthpieces to cigars or cigarettes, e.g. inserting filters into cigarettes or their mouthpieces
    • A24C5/471—Attaching filters or mouthpieces to cigars or cigarettes, e.g. inserting filters into cigarettes or their mouthpieces by means of a connecting band
    • 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
    • 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
    • A24D3/02—Manufacture of tobacco smoke filters
    • A24D3/0204—Preliminary operations before the filter rod forming process, e.g. crimping, blooming
    • A24D3/0212—Applying additives to filter materials
    • 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
    • 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
    • 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
    • A24D3/17—Filters specially adapted for simulated smoking devices

Definitions

  • the present invention relates to a filter for a smoking article.
  • the term 'smoking article' includes smokeable products such as cigarettes, cigars and cigarellos, whether based on tobacco, tobacco derivatives, expanded tobacco, reconstituted tobacco or tobacco substitutes and also heat-not-burn products, but is not limited thereto.
  • a smoking article such as a cigarette is typically provided with a filter for the gaseous flow drawn by a smoker which is connected to a tobacco rod.
  • the filter is commonly made of cellulose acetate tow.
  • a user ignites one end of the tobacco rod and draws a gaseous flow, such as smoke in through the filter.
  • the filter traps some of the smoke components produced by the burning tobacco rod.
  • Smoking articles, and filters therefore, can vary significantly from one market to another as a result of many different factors including consumer preference and tradition.
  • a filter having a recess at the mouth end which may be used to lengthen the filter as a whole.
  • Such a recess filter is known from US 7 243 659 B1 .
  • the recess is achieved by overwrapping the plug of filtration material at the mouth end of the filter.
  • a disadvantage of providing a filter with a recess is that it elongates the length of the filter and therefore the smoking article.
  • the present invention seeks to provide a filter for a smoking article which overcomes or substantially alleviates the problems associated with conventional filters for smoking articles described above.
  • WO00/00047A1 discloses a filter for a smoking article having the features recited in the preamble of claim 1.
  • a filter according to the present invention is characterised by the features referred to in the characterising portion of claim 1.
  • the wrapper extends circumferentially around the first and second filter portions and extends longitudinally from one end of the first filter portion to form the recess section.
  • the longitudinally extending plug comprises a filtration material.
  • the particulate material extends to an end of the second filter portion immediately adjacent the first filter portion.
  • the particulate material extends over a full longitudinal length of the second section.
  • the plug may further comprise a particulate material interspersed in the filtration material, which may be adsorbent.
  • the particulate material may be activated carbon.
  • the first filter portion comprises a filtration material.
  • FIG. 1 a smoking article 1 in the form of a cigarette, which includes a filter 2 in accordance with one aspect of the present invention.
  • Figure 1 shows the smoking article as a cigarette, it should be appreciated that the smoking article 1 may take other forms, such as a cigar or cigarillo etc., which may also include the filter 2 according to the invention.
  • the smoking article 1 comprises a generally cylindrical paper-wrapped rod of smokeable material 3, such as tobacco, co-axially attached to the filter 2 by tipping paper 4, which is glued around one end of the rod of smokeable material 3 and the filter 2 in a conventional manner, and so no further discussion of the tipping paper will be given herein.
  • the filter 2 comprises a filter section 5 about 22mm in length, which includes first and second filter portions 6,7.
  • the filter section 5 typically has a diameter of between 7.5mm to 8mm and the first filter portion 6 includes a wrapper 8 circumscribed therearound which, in this embodiment is a plugwrap material, although the wrapper is not limited thereto.
  • the wrapper or plugwrap 8 is longer than the filter section 5 and overhangs the filter section 5 at a mouth end 9 of the filter 2 to create a recess section 10 having a depth of approximately 5mm.
  • the length of the overhang of the plugwrap 8 and hence the depth of the recess 10 is designated in Figure 2 by the reference character 'x'.
  • the filter section 5 and the recess section 10 together form the filter 2.
  • the plugwrap 8 has a high base weight, for example 100g/m 2 , to provide rigidity to the recess section 10.
  • the plug wrap 8 forming the recess section 10 at the mouth end of the smoking article is made of heavyweight plugwrap to ensure that the recess is maintained and does not easily collapse due to the absence of any supporting filter material.
  • the first filter portion 6 is disposed between the recess section 10 and the second filter portion 7, such that the first filter portion 6 is closer to the mouth end 9 of the filter 2 than the second filter portion 7 and separates the second filter portion 7 from the recess section 10.
  • the second filter portion 7 is disposed between the first filter portion 6 and the rod of smokeable material 3 when the filter 2 is disposed in the smoking article 1.
  • the first filter portion 6 comprises a plug of filtration material about which the plugwrap 8 is circumscribed.
  • the plug of filtration material is formed of fibrous cellulose acetate, although it will be understood that any conventional filtration material may be used.
  • the first filter portion 6 has first and second circular end faces 13,14.
  • the second filter portion 7 comprises a plug 15 of filtration material, such as fibrous cellulose acetate, and a particulate material 16, such as carbon or activated carbon interspersed in said filtration material.
  • the particulate material 16 in the central plug 15 is optional (although in some embodiments is preferred).
  • the second filter portion 7 further comprises a wrapper 17, preferably a plugwrap material, and having a particulate material 18 such as carbon or activated carbon adhered on an inner surface thereof.
  • the wrapper 17 circumferentially envelopes the plug 15 about the longitudinal axis extending through the filter 2, and has a lapped and seamed region. Alternatively, the wrapper 17 is a split wrapper bonded to the plug 15.
  • the second filter portion 7 has first and second circular end faces 19,20.
  • the surface of the wrapper 17 having particulate material 18 adhered thereto is shown in Figure 4 .
  • the particulate material 18 is disposed in separate regions 21 spaced from each other on the inner surface of the wrapper 17.
  • Each of the separate regions 21 of particulate material 18 extend longitudinally along the wrapper 17, however the particulate material 18 extends only partially across the width of the wrapper 17 and longitudinal edges 22 of the wrapper 17 are free from particulate, thus providing a lapped and stuck seam free from particulate material when formed around the plug 15.
  • the particulate material 18 is disposed in two separate regions spaced diametrically opposite each other.
  • the number of separate regions 21 of particulate material 18 disposed on the wrapper 17 is not limited to two regions, and that other arrangements of particulate material 18 may be used. For example, three, four, five or six separate regions spaced from each other on the inner surface of the wrapper 17 may be used. In such arrangements, the regions are evenly and symmetrically positioned around the longitudinal axis extending through the second filter portion 7. However, other spacings may be used. Further, the regions on a particular wrapper may or may not be all of equal width, and may or may not be of equal width with the gaps between the regions. Similarly, the gaps between the regions may not be of equal width.
  • the particulate material 18 disposed on the wrapper 17 is selected from a group of relatively high surface area of materials capable of adsorbing smoke constituents without a high degree of specificity, although the particulate material is not limited thereto.
  • Suitable general adsorbents can be selected from the group consisting of carbon, activated carbon, activated charcoal, activated coconut carbon, activated coal-based carbon or charcoal, zeolite, silica gel, meerschaum, aluminium oxide (activated or not), carbonaceous resin or combinations thereof.
  • the particulate mixture used may be a single substance or a mixture, and/or may be in a mixture with another material.
  • the filter 2 is arranged with the recess section 10 disposed at the mouth end 9 of the smoking article 1, which extends from the first end 13 of the first filter portion 6.
  • the recess section 10 is defined by a circumferentially extending inner surface of the plugwrap 8 extending from the first filter portion 6 and the first end 13 of the first filter portion 6, and has an opening 23 at the mouth end 9. The first end 13 of the first filter portion 6 is visible to a user through the opening 23.
  • the second end 14 of the first filter portion 6 abuts the first end 19 of the second filter portion 7, such that the opening 23 of the recess 10 and the second end 20 of the second filter portion 7 define the opposing ends of the filter 2.
  • An advantage of the above arrangement is that the provision of the particulate material 18 disposed in a circumferential region of the second filter portion 7 increases the effectiveness of the filter section 5 at filtering the gaseous flow therethrough. Therefore, the filter 2 may be shortened without negating the effectiveness of the filter section 5 at filtering the gaseous flow therethrough and so there is provision to provide a filter with a recess section without lengthening the filter 2.
  • the provision of the first filter portion 6 between the recess section 10 and the second filter portion 7 allows the second filter portion 7 to be upstream of the filtration material of the first filter portion 6 and prevents the particulate material 18 disposed in a circumferential region of the second filter portion 7 from being dislodged or displaced therefrom and entering the recess section 10.
  • a user inserts the mouth end 9 of the smoking article into their mouth and lights the paper-wrapped rod 3 of smokeable material at the distal end of the smoking article to the mouth end 9 such that said end burns.
  • the filter 2 is located at the mouth end 9 of the smoking article 1 such that a gaseous flow, comprising smoke drawn from the rod of smokeable material 3, moves through the filter 2 before entering the mouth of the user.
  • the first filter portion 6 and the second filter portion 7 are shown to have individual plugwraps 8,17, it will be understood that in an alternative embodiment the filter comprises a single plugwrap which extends over the entire filter section 5, joins the first and second filter portion 6,7 and forms the recess section 10.
  • the particulate material 18 extends only partially along said plugwrap so that the particulate material extends over the second filter portion 7 only and does not extend over the first filter portion 6.
  • the filter section 5 is formed from two discrete filter portions, in an alternative embodiment the first and second filter portions 6,7 are integrally formed.
  • the recess section is formed by the plugwrap extending beyond the plug of filtration material, it will be understood that the invention is not limited thereby and that in an alternative embodiment the recess may be formed by the tipping paper.

Landscapes

  • Chemical & Material Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Materials Engineering (AREA)
  • Cigarettes, Filters, And Manufacturing Of Filters (AREA)

Claims (10)

  1. Filtre pour article à fumer comprenant une section filtre (5), une section en renfoncement (10) et une enveloppe (17), la section en renfoncement (10) étant définie au niveau d'une extrémité buccale (9) du filtre et la section filtre (5) étant alignée longitudinalement, et adjacente, à la section en renfoncement (10) et comprenant des première et seconde parties de filtre (6, 7), la première partie de filtre (6) étant disposée entre la section en renfoncement (10) et la seconde partie de filtre (7), la seconde partie de filtre (7) comprenant un bout-filtre s'étendant longitudinalement (15) autour duquel l'enveloppe (17) est appliquée,
    caractérisé en ce qu'un matériau particulaire (18) est collé à la surface de l'enveloppe (17), et en ce que le matériau particulaire (18) collé à la surface de l'enveloppe (17) est disposé dans deux ou plusieurs régions espacées circumférentiellement les unes des autres.
  2. Filtre selon la revendication 1, dans lequel l'enveloppe (8, 17) s'étend circonférentiellement autour des première et seconde parties de filtre (6, 7) et s'étend longitudinallement depuis une extrémité de la première partie de filtre (6) pour former la section en renfoncement (10).
  3. Filtre selon la revendication 1 ou 2, dans lequel le bout-filtre s'étendant longitudinalement (15) comprend un matériau de filtration.
  4. Filtre selon l'une quelconque des revendications précédentes, dans lequel le matériau particulaire (18) s'étend jusqu'à une extrémité de la seconde partie de filtre (7) immédiatement adjacente à la première partie de filtre (6).
  5. Filtre selon l'une quelconque des revendications précédentes, dans lequel le matériau particulaire (18) s'étend par-dessus toute une longueur longitudinale de la seconde partie de filtre (7).
  6. Filtre selon la revendication 3, dans lequel le bout-filtre (15) comprend en outre un matériau particulaire (16) dispersé dans le matériau de filtration.
  7. Filtre selon l'une quelconque des revendications précédentes, dans lequel le matériau particulaire est adsorbant.
  8. Filtre selon la revendication 7, dans lequel le matériau particulaire est du charbon actif.
  9. Filtre selon l'une quelconque des revendications précédentes, dans lequel la première partie de filtre (6) comprend un matériau de filtration.
  10. Article à fumer comprenant un filtre selon l'une quelconque des revendications précédentes.
EP10722084.0A 2009-06-29 2010-05-27 Filtre pour article à fumer Active EP2448437B1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
GBGB0911182.4A GB0911182D0 (en) 2009-06-29 2009-06-29 Filter for a smoking article
PCT/EP2010/057320 WO2011000638A1 (fr) 2009-06-29 2010-05-27 Filtre pour article à fumer

Publications (2)

Publication Number Publication Date
EP2448437A1 EP2448437A1 (fr) 2012-05-09
EP2448437B1 true EP2448437B1 (fr) 2019-01-23

Family

ID=41008398

Family Applications (1)

Application Number Title Priority Date Filing Date
EP10722084.0A Active EP2448437B1 (fr) 2009-06-29 2010-05-27 Filtre pour article à fumer

Country Status (11)

Country Link
EP (1) EP2448437B1 (fr)
JP (2) JP2012531187A (fr)
KR (1) KR20120048586A (fr)
BR (1) BRPI1011585A2 (fr)
CA (1) CA2766175A1 (fr)
CL (1) CL2011003332A1 (fr)
GB (1) GB0911182D0 (fr)
RU (2) RU2012103039A (fr)
TR (1) TR201902460T4 (fr)
UA (1) UA104033C2 (fr)
WO (1) WO2011000638A1 (fr)

Families Citing this family (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
HUE025010T2 (en) * 2011-10-21 2016-04-28 Philip Morris Products Sa A smoking article with a labeled mouthpiece
KR101362616B1 (ko) * 2012-01-31 2014-02-13 주식회사 케이티앤지 필터 내 연기흐름 속도 증가를 통한 연량감 개선 필터
EP2801269A1 (fr) * 2013-05-10 2014-11-12 Reemtsma Cigarettenfabriken GmbH Article à fumer
GB201608928D0 (en) 2016-05-20 2016-07-06 British American Tobacco Co Article for use in apparatus for heating smokable material
CN107259639B (zh) * 2017-07-28 2019-10-01 四川三联新材料有限公司 一种发烟制品以及其制造方法
WO2019072962A1 (fr) * 2017-10-13 2019-04-18 Philip Morris Products S.A. Article de génération d'aérosol ayant une cavité comprenant un matériau de modification d'aérosol particulaire

Family Cites Families (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3122974A (en) * 1958-10-09 1964-03-03 figure
US5178166A (en) * 1990-09-20 1993-01-12 Philip Morris Incorporated Filter cigarette
AU4847399A (en) * 1998-06-30 2000-01-17 Philip Morris Products Inc. Low delivery cigarette and filter
CN101115409B (zh) * 2005-02-04 2013-03-27 菲利普莫里斯生产公司 具有纤维质滋味添加剂的香烟及过滤嘴
MY146137A (en) * 2006-03-10 2012-06-29 British American Tobacco Co Smoking article filter
GB0625818D0 (en) * 2006-12-21 2007-02-07 British American Tobacco Co Smoking article filter

Non-Patent Citations (1)

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

Also Published As

Publication number Publication date
RU162983U1 (ru) 2016-07-10
CL2011003332A1 (es) 2012-07-20
JP3200113U (ja) 2015-10-01
EP2448437A1 (fr) 2012-05-09
BRPI1011585A2 (pt) 2015-08-25
GB0911182D0 (en) 2009-08-12
TR201902460T4 (tr) 2019-03-21
WO2011000638A1 (fr) 2011-01-06
JP2012531187A (ja) 2012-12-10
KR20120048586A (ko) 2012-05-15
RU2012103039A (ru) 2013-08-10
CA2766175A1 (fr) 2011-01-06
UA104033C2 (uk) 2013-12-25

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