EP3073845B1 - Filter element and smoking article comprising the filter element - Google Patents
Filter element and smoking article comprising the filter element Download PDFInfo
- Publication number
- EP3073845B1 EP3073845B1 EP14815043.6A EP14815043A EP3073845B1 EP 3073845 B1 EP3073845 B1 EP 3073845B1 EP 14815043 A EP14815043 A EP 14815043A EP 3073845 B1 EP3073845 B1 EP 3073845B1
- 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.)
- Active
Links
- 230000000391 smoking effect Effects 0.000 title claims description 29
- 235000019504 cigarettes Nutrition 0.000 claims description 22
- 239000000463 material Substances 0.000 claims description 17
- 239000000779 smoke Substances 0.000 claims description 11
- 238000000034 method Methods 0.000 claims description 10
- 241000208125 Nicotiana Species 0.000 claims description 2
- 235000002637 Nicotiana tabacum Nutrition 0.000 claims description 2
- QTBSBXVTEAMEQO-UHFFFAOYSA-M Acetate Chemical compound CC([O-])=O QTBSBXVTEAMEQO-UHFFFAOYSA-M 0.000 description 6
- 238000009423 ventilation Methods 0.000 description 6
- 239000012895 dilution Substances 0.000 description 4
- 238000010790 dilution Methods 0.000 description 4
- 239000012530 fluid Substances 0.000 description 3
- 239000000243 solution Substances 0.000 description 3
- 239000000853 adhesive Substances 0.000 description 1
- 230000001070 adhesive effect Effects 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 229920002678 cellulose Polymers 0.000 description 1
- 239000001913 cellulose Substances 0.000 description 1
- 239000003610 charcoal Substances 0.000 description 1
- 238000002485 combustion reaction Methods 0.000 description 1
- 239000000835 fiber Substances 0.000 description 1
- -1 for example Substances 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 239000011148 porous material Substances 0.000 description 1
- 238000011144 upstream manufacturing Methods 0.000 description 1
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
-
- 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.
- This kind of solution is disclosed in document GB2172186 .
- 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.
- 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 11 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 11 of the filter element 2 and an outlet 12 in communication with the channel 8.
- the outside surface 11 is, for example, the outside surface of the covering 7 or, alternatively, the outside surface of the ventilating piece 6.
- 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 " ⁇ " having a value of between 0° and 360° (sexagesimal).
- the angle " ⁇ " 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 " ⁇ " 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 11 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 11 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 11 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.
- 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 11 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)
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 (en) | 2013-11-25 | 2014-11-19 | Filter element and smoking article comprising the smoking article |
Publications (2)
Publication Number | Publication Date |
---|---|
EP3073845A1 EP3073845A1 (en) | 2016-10-05 |
EP3073845B1 true EP3073845B1 (en) | 2018-05-23 |
Family
ID=50159328
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP14815043.6A Active EP3073845B1 (en) | 2013-11-25 | 2014-11-19 | Filter element and smoking article comprising the filter element |
Country Status (9)
Country | Link |
---|---|
EP (1) | EP3073845B1 (ja) |
JP (1) | JP6586423B2 (ja) |
KR (1) | KR102412559B1 (ja) |
CN (1) | CN105934164B (ja) |
IT (1) | ITBO20130640A1 (ja) |
PL (1) | PL3073845T3 (ja) |
RU (1) | RU2677956C1 (ja) |
TR (1) | TR201809394T4 (ja) |
WO (1) | WO2015075649A1 (ja) |
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
WO2022045585A1 (en) * | 2020-08-27 | 2022-03-03 | Kt&G Corporation | Aerosol generating article including porous tobacco solid and method of manufacturing porous tobacco solid |
WO2022269241A1 (en) * | 2021-06-22 | 2022-12-29 | Nicoventures Trading Limited | An article for use with a non-combustible aerosol provision device |
Families Citing this family (3)
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 |
EP4140322A1 (en) * | 2021-08-31 | 2023-03-01 | Philip Morris Products S.A. | Aerosol-generating article with perforations in ventilation zone |
CN117794404A (zh) * | 2021-08-31 | 2024-03-29 | 菲利普莫里斯生产公司 | 在通风区中具有倾斜穿孔的气溶胶生成制品 |
Family Cites Families (18)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US4343319A (en) * | 1980-11-28 | 1982-08-10 | Brown & Williamson Tobacco Corporation | Cigarette filter |
SE453149B (sv) * | 1981-07-06 | 1988-01-18 | Cigarette Components Ltd | Cigarrettfilter med tvergaende hinder |
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 (en) * | 2010-03-26 | 2011-09-28 | Philip Morris Products S.A. | Smoking article with variable ventilation |
GB201012732D0 (en) * | 2010-07-29 | 2010-09-15 | British American Tobacco Co | Smoking article filter |
EP2753198B1 (en) * | 2011-09-09 | 2016-08-10 | Philip Morris Products S.a.s. | Smoking article filter with flow restriction element and cavity |
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 |
CN103974636B (zh) * | 2011-12-09 | 2017-06-23 | 日本烟草产业株式会社 | 吸烟物品、过滤嘴 |
-
2013
- 2013-11-25 IT IT000640A patent/ITBO20130640A1/it unknown
-
2014
- 2014-11-19 WO PCT/IB2014/066170 patent/WO2015075649A1/en active Application Filing
- 2014-11-19 JP JP2016554936A patent/JP6586423B2/ja active Active
- 2014-11-19 RU RU2016119147A patent/RU2677956C1/ru active
- 2014-11-19 CN CN201480064122.5A patent/CN105934164B/zh active Active
- 2014-11-19 TR TR2018/09394T patent/TR201809394T4/tr unknown
- 2014-11-19 EP EP14815043.6A patent/EP3073845B1/en active Active
- 2014-11-19 PL PL14815043T patent/PL3073845T3/pl unknown
- 2014-11-19 KR KR1020167013935A patent/KR102412559B1/ko active IP Right Grant
Non-Patent Citations (1)
Title |
---|
None * |
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
WO2022045585A1 (en) * | 2020-08-27 | 2022-03-03 | Kt&G Corporation | Aerosol generating article including porous tobacco solid and method of manufacturing porous tobacco solid |
WO2022269241A1 (en) * | 2021-06-22 | 2022-12-29 | Nicoventures Trading Limited | An article for use with a non-combustible aerosol provision device |
Also Published As
Publication number | Publication date |
---|---|
TR201809394T4 (tr) | 2018-07-23 |
WO2015075649A1 (en) | 2015-05-28 |
RU2677956C1 (ru) | 2019-01-22 |
ITBO20130640A1 (it) | 2015-05-26 |
JP2016537033A (ja) | 2016-12-01 |
EP3073845A1 (en) | 2016-10-05 |
CN105934164B (zh) | 2019-10-08 |
CN105934164A (zh) | 2016-09-07 |
PL3073845T3 (pl) | 2018-11-30 |
RU2016119147A (ru) | 2018-01-09 |
KR102412559B1 (ko) | 2022-06-23 |
JP6586423B2 (ja) | 2019-10-02 |
KR20160089377A (ko) | 2016-07-27 |
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