EP3073845A1 - Élément de filtre et article à fumer comprenant l'élément de filtre - Google Patents

Élément de filtre et article à fumer comprenant l'élément de filtre

Info

Publication number
EP3073845A1
EP3073845A1 EP14815043.6A EP14815043A EP3073845A1 EP 3073845 A1 EP3073845 A1 EP 3073845A1 EP 14815043 A EP14815043 A EP 14815043A EP 3073845 A1 EP3073845 A1 EP 3073845A1
Authority
EP
European Patent Office
Prior art keywords
filter element
piece
ventilating
hole
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.)
Granted
Application number
EP14815043.6A
Other languages
German (de)
English (en)
Other versions
EP3073845B1 (fr
Inventor
Ivan Eusepi
Nicola VISCANTI
Giuliano Gamberini
Massimo Sartoni
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.)
GD SpA
Original Assignee
GD SpA
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 GD SpA filed Critical GD SpA
Priority to PL14815043T priority Critical patent/PL3073845T3/pl
Publication of EP3073845A1 publication Critical patent/EP3073845A1/fr
Application granted granted Critical
Publication of EP3073845B1 publication Critical patent/EP3073845B1/fr
Active legal-status Critical Current
Anticipated expiration legal-status Critical

Links

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
    • 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
    • A24D3/0275—Manufacture of tobacco smoke filters for filters with special features
    • 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
    • A24D3/062—Use of materials for tobacco smoke filters characterised by structural features

Definitions

  • This invention relates to a filter element and to a smoking article comprising the smoking article.
  • the invention relates to a cigarette filter and to a cigarette comprising the filter and a cigarette stick connected to each other.
  • Filter-tipped cigarettes of known type comprise a substantially cylindrical filter element, made of acetate, for example, connected by a patch to what is known as a cigarette stick, comprising, for example, shredded tobacco wrapped in a sheet of paper or the like.
  • Cigarettes are known which are equipped with ventilation systems intended to dilute the main flow of smoke which reaches the smoker's mouth with fresh air taken in from the outside atmosphere.
  • one method of guaranteeing ventilation is to make small holes, for example by means of laser, in a direction radial to the filter and equispaced along the outer circumference. These holes generally penetrate into the acetate by a few tenths of a millimetre.
  • the Applicant has observed that for a given transversal cross section of the filter, at the end of the filter intended to be placed in the smoker's mouth, the volumes of undiluted smoke (smoke volume fraction) are highest in the vicinity of the cigarette axis and, in the radially outermost zones, the smoke volumes are much lower and there are large quantities of air which has not mixed with the smoke.
  • the main purpose of this invention is to propose a filter element and a smoking article comprising the filter element which are free of the above mentioned disadvantages..
  • This invention has for an aim to provide a smoking article, in particular a cigarette, in which the mixing of smoke and air inside the filter, especially at the end of it intended to be placed in the smoker's mouth, is optimized compared to prior art smoking articles.
  • a further aim of this invention is to provide a smoking article, in particular a filter cigarette, which guarantees that dilution is distributed as uniformly as possible, at the outlet of the filter,
  • FIG. 1 is a schematic axonometric view of a first embodiment of a smoking article according to this invention
  • FIG. 2 is a schematic front view, with some parts cut away for greater clarity, of the smoking article of Figure 1 ;
  • Figure 3 is a suitably interrupted, schematic side view of the smoking article of Figure 1 ;
  • FIG. 4 is an enlarged detail of the smoking article of Figure 1 in a suitably interrupted, schematic cross sectional view along the plane IV-IV of Figure 2;
  • FIG. 5 is a schematic axonometric view of a filter element according to this invention.
  • FIG. 6 shows a further embodiment of a smoking article according to the invention in a suitably interrupted, cross sectional view.
  • the numeral 1 denotes a smoking article according to this invention, and more specifically, a filter cigarette.
  • the article 1 comprises a filter element 2 and a cigarette stick 3, connected to each other, and has a main direction of extension D and an axis A.
  • the main direction of extension D and axis A of the article 1 correspond also to the main direction of extension and axis of the filter element 2, respectively.
  • the smoking article In use, the smoking article has passing through it a main flow of smoke F1 produced by combustion of the cigarette stick 3 and which moves from the cigarettes stick 3 towards the filter element 2.
  • the article 1 comprises a connecting patch 4 which is wrapped around the filter element 2 and the cigarette stick 3 and which is connected to them preferably by adhesive.
  • the filter element 2 comprises a ventilating piece 6 comprising at least one internal channel 8 and at least one hole 9 having an inlet 10 in communication with an outside surface 1 1 of the filter element 2 and an outlet 12 in communication with the internal channel 8.
  • the filter element 2 comprises a piece 5a of filter material, for example, porous material such as acetate, intended to be placed in the smoker's mouth.
  • the piece 5a is located in the filter element 2 on the smoker's side.
  • the ventilating piece 6 is coaxial with the piece 5 of filter material.
  • the filter element 2 comprises a second piece 5b of filter material facing the cigarette stick 3.
  • the piece 5b is located in the filter element 2 on the cigarette side, in contact with the cigarette stick 3.
  • the piece 5b is made, for example, of acetate or comprises acetate and "charcoal".
  • the piece 5b is located upstream of the ventilating piece 6 along the main flow F1 .
  • the piece 5a is located downstream of the ventilating piece 6 along the main flow F1 .
  • the ventilating piece 6 is thus interposed between the first piece 5a and the second piece 5b.
  • the flow F1 meets the piece 5b, then the piece 6 and, lastly, the piece 5a.
  • the filter element 2 comprises the piece 5b of filter material and the ventilating piece 6.
  • the part placed in the smoker's mouth is the ventilating piece 6.
  • the filter element 2 comprises the ventilating piece 6 and the piece 5a of filter material.
  • the ventilating piece 6 is in contact with the cigarette stick 3.
  • the ventilating piece 6 and the piece 5a and/or 5b of filter material are held together preferably by a covering 7, for example in the form of a sheet of paper or the like wrapped around the piece 6 and the piece 5.
  • the piece 6 has at least one internal channel 8 through which the flow F1 passes.
  • the ventilating piece 6 has a plurality of through holes 9, each having a respective axis A1 .
  • the holes 9 have an inlet 10 in communication with an outside surface 1 1 of the filter element 2 and an outlet 12 in communication with the channel 8.
  • the outside surface 1 1 is, for example, the outside surface of the covering
  • the covering 7 has a plurality of holes 7a, each in communication with the inlet 10 of a corresponding hole 9.
  • the patch 4 has a plurality of holes 13, each in communication with the inlet 10 of a corresponding hole 9.
  • the patch 4 comprises a ventilating zone 4a with a high porosity, preferably higher than 30000 Coresta units, and in communication with or substantially at the inlets of the holes 9.
  • the patch 4 is made preferably directly at the paper mill or by electrostatic microperforation.
  • the holes 9 have a cylindrical shape.
  • each hole 9 allows a flow of air F2 to enter the channel 8, for example by way of the holes 13 and 7a or through the zone 4a and the holes 7a and to be mixed with the main flow F1 in the channel 8 itself, creating a diluted flow F which reaches the mouth of a generic smoker, not illustrated.
  • the filter element 2 generally speaking, allows effectively mixing the smoke of the flow F1 with the air of the flow F2 to obtain a more uniform dilution at the outlet of the filter (mouth end, flow F).
  • the axis A1 is inclined with respect to a plane P1 normal to the main direction of extension D at an angle "a" having a value of between 0° and 360° (sexagesimal).
  • the angle "a” considering its values positive if measured in anticlockwise direction and negative if measured in clockwise direction, has a value of between +90° and -90° (sexagesimal).
  • the angle "a" is 45° (sexagesimal) so that the direction of the flow F2 entering the channel 8 is substantially the same as the direction of the main flow F1 passing through the selfsame channel.
  • the axis A1 of the hole 9 is advantageously inclined with respect to a radial plane P2, that is, a plane comprising a radius of the filter element 2 and passing through the outlet 12 of the hole 9, at an angle " ⁇ " having a value of between 0° and 360° (sexagesimal).
  • the angle " ⁇ " is 25° (sexagesimal).
  • the axis A1 of the hole 9 does not lie in a radial plane, that is, " ⁇ " is not 0 and the axis A1 does not lie in a plane comprising the axis A of the smoking article 1 or of the filter element 2.
  • the offset of the axes of the holes 9 relative to the radial planes has beneficial effects because it produces a whirling motion which allows better mixing of the flows F1 and F2 and stabilizes the flow F, creating highly uniform dilution profiles.
  • the filter element 2 in a preferred embodiment, comprises at least one channel 8 where dilution of the main flow of smoke F1 occurs.
  • the air flow F2 is taken in through the holes 9, enters the channel 8 and produces a whirling motion inside the channel 8 itself.
  • the filter element 2 comprises an expansion chamber 14 located downstream of the ventilating piece 6 along the main flow F1 .
  • the expansion chamber 14 contributes to the mixing of the flows F1 and F2.
  • the ventilating piece 6 comprises a tubular element 6a.
  • the ventilating piece 6 is in the form of a tubular element 6a and has an internal duct 8a, preferably cylindrical, which defines the channel 8.
  • the channel 8 where mixing of the flows F1 and F2 occurs is defined by the duct 8a inside the tubular element 6a.
  • the holes 9 pass through the tubular element 6a to put the outside surface 1 1 of the filter element 2 in communication with the internal duct 8a.
  • tubular element 6a is aligned, preferably coaxially, with the piece 5a and/or 5b of filter material.
  • the element 6a is made preferably of a high-density material, that is to say, a material which is not very permeable to air, such as, for example, acetate or a cellulose based material in general.
  • the ventilating piece 6 comprises a third piece of filter material 6b.
  • the ventilating piece 6 is in the form of the third piece of filter material 6b.
  • the piece 6b comprises an outer portion 6b' and an inner portion 6b", preferably coaxial with the outer portion 6b'.
  • the inner portion 6b" is more porous than the outer portion 6b' and the channel 8 where the flow F1 is diluted by the flow F2 is defined through the inner portion 6b".
  • the channel 8 defined by the portion 6b" comprises a fibre constituting the portion 6b" itself and whose porosity is such as to allow the flows F1 and F2 to be mixed together.
  • the holes 9 pass through the outer portion 6b' to put the outside surface 1 1 of the filter element 2 in communication with the channel 8 made in the portion 6b".
  • the piece 6b is characterized by the outer portion 6b', or skin, which is not very porous, and by an internal duct, defined by the highly porous portion 6b", which defines a preferential passage for the flow F1 .
  • a method for making a smoking article 1 comprising the filter element 2 comprises a step of perforating the ventilating piece 6, preferably by laser, to make the holes 9.
  • the piece 6 is perforated from the outer surface 1 1 to the channel 8 in such a way that the inside of the channel 8 is put in fluid communication with the outside atmosphere.
  • a method for making the smoking article 1 comprises a step of perforating the ventilating piece 6, preferably by laser, to make the holes 9.
  • the piece 6 is perforated from the outer surface 1 1 to the channel 8 in such a way that the inside of the channel 8 is put in fluid communication with the outside atmosphere.
  • the piece 6 is perforated through the full thickness of its skin.
  • perforation of the piece 6 involves the entire smoking article 1 and, in particular, also the patch 4 in which the holes 13 are made.
  • the perforating step also perforates the covering 7 to make the holes 7a.
  • the piece 6 is preferably perforated, for example in a machine known as "filter maker” of substantially known type, according to the method described above, before the smoking article 1 is made.
  • the method then comprises a step of wrapping the filter element 2, equipped with the holes 9, and the cigarette stick 3 with the patch 4 comprising the ventilation zone 4a so that the inlet 10 of each hole 9 is in fluid communication with the ventilation zone 4a.

Landscapes

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

Abstract

L'invention concerne un élément de filtre (2) pour article à fumer (1) de l'industrie du tabac, comprenant au moins une pièce de ventilation (6) dotée d'au moins un canal interne (8) et d'au moins un trou (9) présentant une entrée (10) en communication avec la surface extérieure (11) de l'élément de filtre (2) et d'une sortie (12) en communication avec le canal interne (8) afin de ventiler un flux principal (F1) de fumée traversant l'élément de filtre (2).
EP14815043.6A 2013-11-25 2014-11-19 Élément de filtre et article à fumer comprenant l'élément de filtre Active EP3073845B1 (fr)

Priority Applications (1)

Application Number Priority Date Filing Date Title
PL14815043T PL3073845T3 (pl) 2013-11-25 2014-11-19 Element filtra oraz artykuł do palenia zawierający element filtra

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
IT000640A ITBO20130640A1 (it) 2013-11-25 2013-11-25 Elemento filtrante ed articolo da fumo comprendente tale elemento filtrante.
PCT/IB2014/066170 WO2015075649A1 (fr) 2013-11-25 2014-11-19 Élément de filtre et article à fumer comprenant l'élément de filtre

Publications (2)

Publication Number Publication Date
EP3073845A1 true EP3073845A1 (fr) 2016-10-05
EP3073845B1 EP3073845B1 (fr) 2018-05-23

Family

ID=50159328

Family Applications (1)

Application Number Title Priority Date Filing Date
EP14815043.6A Active EP3073845B1 (fr) 2013-11-25 2014-11-19 Élément de filtre et article à fumer comprenant l'élément de filtre

Country Status (9)

Country Link
EP (1) EP3073845B1 (fr)
JP (1) JP6586423B2 (fr)
KR (1) KR102412559B1 (fr)
CN (1) CN105934164B (fr)
IT (1) ITBO20130640A1 (fr)
PL (1) PL3073845T3 (fr)
RU (1) RU2677956C1 (fr)
TR (1) TR201809394T4 (fr)
WO (1) WO2015075649A1 (fr)

Families Citing this family (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB201919078D0 (en) * 2019-12-20 2020-02-05 Nicoventures Trading Ltd Component for use in an aerosol provision system
KR102481437B1 (ko) * 2020-08-27 2022-12-27 주식회사 케이티앤지 다공성 담배 고형물을 포함하는 에어로졸 발생 물품 및 다공성 담배 고형물의 제조방법
GB202108939D0 (en) * 2021-06-22 2021-08-04 Nicoventures Trading Ltd An article for use with a non-combustible aerosol provision device
KR20240046729A (ko) * 2021-08-31 2024-04-09 필립모리스 프로덕츠 에스.에이. 환기 구역에 기울어진 천공을 갖는 에어로졸 발생 물품
EP4140322A1 (fr) * 2021-08-31 2023-03-01 Philip Morris Products S.A. Article de génération d'aérosol comportant des perforations dans la zone de ventilation

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US4343319A (en) * 1980-11-28 1982-08-10 Brown & Williamson Tobacco Corporation Cigarette filter
IT1198385B (it) * 1981-07-06 1988-12-21 Cigarette Components Ltd Filtro per sigaretta
US4506683A (en) * 1983-05-09 1985-03-26 Brown & Williamson Tobacco Corporation Ventilated mouthpiece for a smoking article
GB8407671D0 (en) * 1984-03-23 1984-05-02 Brritish American Tobacco Co L Smoking article mouth-piece elements
GB8413017D0 (en) * 1984-05-22 1984-06-27 Imp Group Plc Tobacco smoke filters
GB8415972D0 (en) * 1984-06-22 1984-07-25 British American Tobacco Co Smoking article mouthpiece elements
GB8506594D0 (en) * 1985-03-14 1985-04-17 British American Tobacco Co Smoking article filters
JP3194580B2 (ja) * 1991-03-11 2001-07-30 日本たばこ産業株式会社 シガレット
IT1253273B (it) * 1991-10-10 1995-07-14 Gd Spa Articolo da fumo, in particolare sigaretta ventilata, e metodo per la sua realizzazione
ATE341234T1 (de) * 2001-12-18 2006-10-15 Bat Cigarettenfab Gmbh Filter für einen rauchbaren artikel
CN2515968Y (zh) * 2002-03-22 2002-10-16 李多 一种在成型纸上穿孔的卷烟嘴棒
TW200911141A (en) * 2007-03-09 2009-03-16 Philip Morris Prod Super recessed filter cigarette restrictor
US8511319B2 (en) * 2008-11-20 2013-08-20 R. J. Reynolds Tobacco Company Adsorbent material impregnated with metal oxide component
EP2368448A1 (fr) * 2010-03-26 2011-09-28 Philip Morris Products S.A. Article de fumeur doté de ventilation variable
GB201012732D0 (en) * 2010-07-29 2010-09-15 British American Tobacco Co Smoking article filter
PL2753198T3 (pl) * 2011-09-09 2017-08-31 Philip Morris Products S.A. Filtr wyrobu do palenia z elementem ograniczającym przepływ i wnęką
AR089183A1 (es) * 2011-11-30 2014-08-06 Philip Morris Products Sa Articulo para fumar con una boquilla ventilada que comprende primeras y segundas vias de flujo de aire
KR101722303B1 (ko) * 2011-12-09 2017-03-31 니뽄 다바코 산교 가부시키가이샤 끽연 물품, 필터

Also Published As

Publication number Publication date
EP3073845B1 (fr) 2018-05-23
RU2016119147A (ru) 2018-01-09
KR102412559B1 (ko) 2022-06-23
CN105934164A (zh) 2016-09-07
TR201809394T4 (tr) 2018-07-23
RU2677956C1 (ru) 2019-01-22
KR20160089377A (ko) 2016-07-27
JP2016537033A (ja) 2016-12-01
JP6586423B2 (ja) 2019-10-02
PL3073845T3 (pl) 2018-11-30
WO2015075649A1 (fr) 2015-05-28
ITBO20130640A1 (it) 2015-05-26
CN105934164B (zh) 2019-10-08

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