WO2008142420A1 - Filtre pour fumée de tabac - Google Patents

Filtre pour fumée de tabac Download PDF

Info

Publication number
WO2008142420A1
WO2008142420A1 PCT/GB2008/001762 GB2008001762W WO2008142420A1 WO 2008142420 A1 WO2008142420 A1 WO 2008142420A1 GB 2008001762 W GB2008001762 W GB 2008001762W WO 2008142420 A1 WO2008142420 A1 WO 2008142420A1
Authority
WO
WIPO (PCT)
Prior art keywords
filter
tobacco smoke
adsorbent
filter element
adsorbent material
Prior art date
Application number
PCT/GB2008/001762
Other languages
English (en)
Inventor
Anthony Denis Mccormack
Andrew James Warburton
Thomas Anthony Ryan
Original Assignee
Filtrona International Limited
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 Filtrona International Limited filed Critical Filtrona International Limited
Priority to UAA200912898A priority Critical patent/UA97273C2/ru
Priority to JP2010508904A priority patent/JP5421247B2/ja
Priority to EP08750684.6A priority patent/EP2150142B1/fr
Publication of WO2008142420A1 publication Critical patent/WO2008142420A1/fr

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
    • A24D3/06—Use of materials for tobacco smoke filters
    • A24D3/14—Use of materials for tobacco smoke filters of organic materials as additive
    • 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
    • A24D3/16—Use of materials for tobacco smoke filters of inorganic materials

Definitions

  • the present invention relates to tobacco smoke filters, especially for cigarettes.
  • tobacco smoke filters which include additives, for example particulate additives, such as activated carbon.
  • a tobacco smoke filter or filter element including an adsorbent material - e.g. a particulate adsorbent material - wherein the adsorbent material is coated by a polymer material in an amount from between 0.4% to 5% w/w based on the weight of the adsorbent material.
  • the adsorbent material - e.g. the particulate adsorbent material - may be any material which may remove one or more components in the vapour state (e.g. one or more of acetaldehyde, 1 ,3-butadiene, acrolein, propanaldehyde, acetone, acrylonitrile, isoprene, butyraldehyde, methyl ethyl ketone, crotonaldehyde, benzene and toluene) from tobacco smoke by adsorption (and/or absorption and/or chemical reaction).
  • the adsorbent material may be carbon, for example activated carbon. The carbon e.g.
  • activated carbon may be a coconut based activated carbon, or e.g. carbon or activated carbon prepared from other precursor materials (e.g. other nut shells, fruit stones, coal, lignite, wood, peat, organic polymers etc).
  • the adsorbent - e.g. particulate adsorbent - material may be, for example, zeolite, ion exchange resin (e.g. weakly basic ion exchange resin), sepiolite, silica gel, alumina, molecular sieves, carbonaceous polymer resins and diatomaceous earths.
  • the adsorbent - e.g. particulate adsorbent - may be in the form of granules.
  • adsorbent particles/granules of any size suitable for use in tobacco smoke filters may be used with filters and filter elements of the invention.
  • adsorbent particles of 10 to 100 BS Mesh (which corresponds to particles of diameter between 1.7mm and 0.15mm) may be used.
  • the adsorbent material is coated with a polymer material.
  • the polymer material may polyethylene or polyurethane. Other polymer materials (e.g. polyvinyl acetate, polyvinyl alcohol, polymethacrylic acid) may be used.
  • the polymer material may include a pigment or colouring agent or other material which imparts colour to the polymer.
  • the inclusion of a coloured polymer may provide a coloured adsorbent material e.g. a coloured e.g. red, blue, white, yellow, green etc. particulate adsorbent material. The inclusion of this material may be used as an anti- counterfeiting measure.
  • the amount of polymer material is 0.4% to 5% w/w (based on the weight of the adsorbent material), for example, 0.5% to 3%, for example 0.6% to 2.8%, for example 0.7% to 2.5%, for example 0.9 to 2.1%, for example 1 to 2%.
  • a tobacco smoke filter or filter element including an adsorbent material - e.g. particulate adsorbent material - coated with polyurethane.
  • the adsorbent material may be coated with polyurethane in an amount of from between 0.4% to 5% w/w based on the weight of the adsorbent material, for example, 0.5% to 3%, for example 0.6% to 2.8%, for example 0.7% to 2.5%, for example 0.9 to 2.1%, for example 1 to 2%.
  • tobacco smoke filters and filter elements according to the invention may provide a marked reduction in the number of dust particles released from product filters (for example as measured by the particle breakthrough measurements) in use, with little or no significant loss of vapour phase reduction performance.
  • the applicants have also surprisingly found that there may be a marked reduction in the dust associated with the filter making process (e.g. reduction in the amount of contamination of the machinery and/or product tobacco smoke filters or filter elements).
  • tobacco smoke filter or filter elements which include an adsorbent material - e.g. particulate adsorbent material - which is coated as described above may be less prone to loss of vapour phase removal efficiency on storage.
  • the tobacco smoke filter or filter element of the invention may be in the form of any tobacco smoke filter or filter element which is known in the art for use with the inclusion of adsorbent (e.g. particulate adsorbent material, e.g. activated carbon) with the (particulate) adsorbent material coated with the defined amount of polymer material substituted for the adsorbent material in the known filter.
  • adsorbent e.g. particulate adsorbent material, e.g. activated carbon
  • the tobacco smoke filter or filter element according to the invention may be in the form of an active acetate filter or filter element, triple granular filter - for example such as that shown in Fig 1 , active patch filter or element, a filter or element such as that described in PCT/GB2005/004644, coated thread filters, or variations or component thereof etc.
  • a tobacco smoke filter or filter element comprising: a longitudinally extending core of tobacco smoke filtering material; and an adsorbent material; wherein the adsorbent material is coated by a polymer material in an amount from between 0.4% to 5% w/w based on the weight of the adsorbent material.
  • the longitudinally extending core is of (or includes) air permeable material.
  • the filter or filter element may, for example, further comprise a wrapper e.g. arranged around the core.
  • the adsorbent material e.g. particulate adsorbent material e.g. activated carbon
  • coated with polymer e.g. polyethylene, polyurethane
  • a tobacco smoke filter or filter element comprising: a longitudinally extending core of tobacco smoke filtering material; and an adsorbent material, wherein the adsorbent material is coated with polyurethane.
  • the longitudinally extending core is of (or includes) air permeable material.
  • the filter or filter element may, for example, further comprise a wrapper e.g. arranged around the core.
  • the adsorbent material e.g. particulate adsorbent material e.g. activated carbon coated with polyurethane may be located in or on the longitudinally extending core, and/or in or on the wrapper (if present) as e.g. patches, stripes etc..
  • the longitudinally extending core of tobacco smoke filtering material may include a cellulose acetate plug - e.g. cellulose acetate tow.
  • a cellulose acetate plug - e.g. cellulose acetate tow.
  • particles of carbon e.g. particles, preferably granules, of activated carbon which is coated with polymer (e.g. polyethylene, polyurethane) as defined above; e.g. carried on the cellulose acetate tow or filaments or fibres or sheet material which is gathered to form the plug.
  • the longitudinally extending core may comprise a rod-shaped matrix of tobacco smoke filtering material plug - e.g. cellulose acetate tow - having fully enclosed therewithin a pocket - e.g.
  • an ellipsoidal pocket - of particulate additive e.g. particles, preferably granules, of activated carbon which is coated with polymer (e.g. polyethylene, polyurethane) as defined above.
  • polymer e.g. polyethylene, polyurethane
  • Other configurations are possible and would be known to the skilled man, see e.g. discussion above.
  • a filter according to the invention (or filter which includes a filter element according to the invention) is joined to a wrapped tobacco rod with one end towards the tobacco.
  • the filter may for example be joined to the wrapped tobacco rod by tipping (which engages around just the adjacent ends of filter and rod to leave much of the filter wrapper exposed) or by a full tipping overwrap (which engages around the full filter length and adjacent end of the rod).
  • Any filter or filter cigarette according to the invention may be ventilated by methods well known in the art, e.g. by use of a pre-perforated or air- permeable plug wrap, and/or laser perforation of plugwrap and tipping overwrap.
  • a polymer coated adsorbent in the manufacture of an adsorbent (e.g. particulate adsorbent) containing tobacco smoke filter or filter element, or the manufacture of a smoking article including such adsorbent (e.g. particulate adsorbent) containing filters or filter elements, e.g. for reducing dust or other particulate contamination of e.g. the product during manufacture.
  • a method of reducing dust or other particulate contamination in the manufacture of an adsorbent e.g.
  • particulate adsorbent containing tobacco smoke filters or filter elements, or the manufacture of smoking articles including such adsorbent (e.g. particulate adsorbent) filters or filter elements, comprising a step of applying a polymer coating to the adsorbent.
  • adsorbent, polymer coating, and amounts may be as described and defined above.
  • FIGURE 1 shows a schematic side elevation view, not to scale, of a triple granular filter of the invention.
  • a triple granular filter has a cylindrical downstream or buccal end filtering plug 102 of filtering material in the form of a wrapped cellulose acetate plug of length 6mm, a cylindrical upstream (tobacco end) filtering plug 103 in the form of a wrapped cellulose acetate plug of length 6mm, the plugs 102 and 103 being longitudinally spaced a 5mm distance from each other.
  • a filter wrapper 105 of air-permeable paper is engaged around the plugs to form a cavity 106 of length 5mm between the downstream plug 102 and the upstream plug 103.
  • the cavity 106 has, located therein, adsorbent additive 107 in the form of 75 milligrams of 12/30 mesh granules of activated carbon (standard coconut-based carbon as typically used in cigarette filter applications) coated (by known methods) with around 2% w/w polyethylene, based on the weight of the activated carbon.
  • adsorbent additive 107 in the form of 75 milligrams of 12/30 mesh granules of activated carbon (standard coconut-based carbon as typically used in cigarette filter applications) coated (by known methods) with around 2% w/w polyethylene, based on the weight of the activated carbon.
  • triple granular filter of Fig 1 is structurally similar to known triple granular filters but includes coated activated carbon which may provide improved performance. It will be appreciated that the filter of Figure 1 may be made by methods well known in the art, readily adapted for use with coated carbon.
  • PBT Particle breakthrough
  • Each batch provided tips of 17 mm length - a 5-mm cavity containing around 75 mg of 12/30 mesh carbon sandwiched between two
  • the control filters incorporated a standard - i.e. non coated - coconut-based carbon as typically used in cigarette filter applications.
  • the Example 1 filters which were of the invention, incorporated a standard coconut-based carbon as typically used in cigarette filter applications, which had been coated with around 2% w/w polyurethane.
  • Mean PBT was reduced from 96 particles for the control filters to 29 particles for the coated carbon Example 1 filters, indicating a marked reduction in particle breakthrough provided by the coated carbon.
  • Polyethylene coated activated carbon was prepared by known methods. Coconut-based carbons of both 60% and 100% carbon tetrachloride (CTC) activity were coated with polyethylene at amounts of 0.5%, 1.0% and 2.0% w/w. The comparative ability of these coated carbons to remove vapour phase (VP) constituents from tobacco smoke was assessed by assembling cigarettes with 'triple granular' filters, of similar structure to the filter of Fig 1 , each containing 80mg of the polyethylene coated activated carbon carbon in a packed bed between two cellulose acetate filter segments.
  • CTC carbon tetrachloride
  • the filter cigarettes were smoked under ISO conditions and the relative yields of a range of 12 VP compounds (acetaldehyde, 1 ,3- butadiene, acrolein, propanaldehyde, acetone, acrylonitrile, isoprene, butyraldehyde, methyl ethyl ketone, crotonaldehyde, benzene and toluene) measured as compared to a control cigarette with an empty cavity.
  • the arithmetic mean reduction in VP of these 12 compounds for the 60% CTC set of samples is given in the following table:
  • Triple Granular' filters of similar structure to that of Figure 1 containing either an empty cavity; 80 mg of 60 CTC or 100 CTC activated carbon, or
  • tobacco smoke filters and filter elements according to the invention may provide a marked reduction in the number of dust particles released from filters (for example as measured by the particle breakthrough measurements) with little or no significant loss of vapour phase reduction performance.

Landscapes

  • Chemical & Material Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Materials Engineering (AREA)
  • Inorganic Chemistry (AREA)
  • Cigarettes, Filters, And Manufacturing Of Filters (AREA)
  • Solid-Sorbent Or Filter-Aiding Compositions (AREA)

Abstract

La présente invention concerne un filtre ou un élément de filtre pour fumée de tabac comprenant un matériau adsorbant, ledit matériau adsorbant étant revêtu d'un matériau polymère à hauteur de 0,4 à 5 % (poids/poids) sur la base du poids du matériau adsorbant.
PCT/GB2008/001762 2007-05-24 2008-05-23 Filtre pour fumée de tabac WO2008142420A1 (fr)

Priority Applications (3)

Application Number Priority Date Filing Date Title
UAA200912898A UA97273C2 (ru) 2007-05-24 2008-05-23 Фильтр для табачного дыма
JP2010508904A JP5421247B2 (ja) 2007-05-24 2008-05-23 タバコ煙フィルタ
EP08750684.6A EP2150142B1 (fr) 2007-05-24 2008-05-23 Filtre pour fumée de tabac

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
GB0709989A GB0709989D0 (en) 2007-05-24 2007-05-24 Tobacco smoke filter
GB0709989.8 2007-05-24

Publications (1)

Publication Number Publication Date
WO2008142420A1 true WO2008142420A1 (fr) 2008-11-27

Family

ID=38265294

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/GB2008/001762 WO2008142420A1 (fr) 2007-05-24 2008-05-23 Filtre pour fumée de tabac

Country Status (8)

Country Link
EP (1) EP2150142B1 (fr)
JP (1) JP5421247B2 (fr)
KR (1) KR101617465B1 (fr)
GB (1) GB0709989D0 (fr)
HU (1) HUE036965T2 (fr)
RU (2) RU2009147972A (fr)
UA (1) UA97273C2 (fr)
WO (1) WO2008142420A1 (fr)

Cited By (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN102100409A (zh) * 2010-09-15 2011-06-22 张锐 降焦油、止咳润喉用香烟过滤剂
CN102100410A (zh) * 2010-09-15 2011-06-22 张锐 降焦油、止咳、保健用香烟过滤剂
EP2636319A2 (fr) 2010-10-06 2013-09-11 Celanese Acetate LLC Filtres à fumée pour dispositifs à fumer avec des masses poreuses ayant une charge de particules de carbone et chute de pression encapsulée
US9027566B2 (en) 2010-10-15 2015-05-12 Celanese Acetate Llc Apparatuses, systems, and associated methods for forming porous masses for smoke filter
WO2015103021A1 (fr) * 2013-12-30 2015-07-09 Philip Morris Products, S.A. Charbon actif pour articles à fumer
US9386803B2 (en) 2010-01-06 2016-07-12 Celanese Acetate Llc Tobacco smoke filter for smoking device with porous mass of active particulate
WO2019122468A1 (fr) 2017-12-21 2019-06-27 Universidad De Alicante Filtre combiné pour l'élimination de goudrons et de composés toxiques de la fumée du tabac

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR101430294B1 (ko) * 2011-11-11 2014-08-14 주식회사 케이티앤지 천연 추출물 코팅 흡착제 적용 담배 필터 및 그의 흡착제 제조 방법
CN111074359B (zh) * 2017-12-25 2022-05-13 湖北金叶玉阳化纤有限公司 一种烟用过滤嘴棒过程中的彩色聚乳酸纤维的调节装置
EP3868227A4 (fr) * 2018-10-18 2022-06-01 Japan Tobacco Inc. Produit à fumer, procédé de production dudit produit à fumer et procédé de distinction de charbon actif granulaire

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US3127373A (en) * 1964-03-31 Polyoxyalkylated phenol-ketone and phenol-aldehyde
US3381070A (en) * 1964-09-08 1968-04-30 Eastman Kodak Co Method of producing a filter element
US3407822A (en) * 1966-02-07 1968-10-29 Eastman Kodak Co Tobacco smoke filters containing polyethylene encapsulated cellulose particles
WO2003059096A1 (fr) * 2002-01-09 2003-07-24 Philip Morris Products, S.A. Filtre de cigarette a billes de carbone
GB2421707A (en) * 2004-12-29 2006-07-05 Acetate Products Ltd Polycomponent fibres for cigarette filters

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US3865758A (en) * 1971-09-13 1975-02-11 Teijin Ltd Polyurethane foam filter material containing adsorbent and method of production thereof
MX142927A (es) * 1974-06-24 1981-01-20 Empresas La Moderna Sa De Cv Mejoras en material para filtrar humo de tabaco
DE3211629A1 (de) * 1982-03-30 1983-10-06 Basf Ag Verfahren zum verfestigen der oberflaechen von koernigen adsorbentien
KR100193377B1 (ko) * 1994-09-02 1999-06-15 이서봉 담배필터용 입상 복합 분자체 조성물의 제조방법
US20030084788A1 (en) * 2001-06-22 2003-05-08 Fraser Ladson L Foam coated air filtration media
US20060144410A1 (en) * 2004-12-30 2006-07-06 Philip Morris Usa Inc. Surface-modified activated carbon in smoking articles
JP2006224026A (ja) * 2005-02-18 2006-08-31 Bridgestone Corp 消臭フィルタ

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3127373A (en) * 1964-03-31 Polyoxyalkylated phenol-ketone and phenol-aldehyde
US3381070A (en) * 1964-09-08 1968-04-30 Eastman Kodak Co Method of producing a filter element
US3407822A (en) * 1966-02-07 1968-10-29 Eastman Kodak Co Tobacco smoke filters containing polyethylene encapsulated cellulose particles
WO2003059096A1 (fr) * 2002-01-09 2003-07-24 Philip Morris Products, S.A. Filtre de cigarette a billes de carbone
GB2421707A (en) * 2004-12-29 2006-07-05 Acetate Products Ltd Polycomponent fibres for cigarette filters

Cited By (13)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US9386803B2 (en) 2010-01-06 2016-07-12 Celanese Acetate Llc Tobacco smoke filter for smoking device with porous mass of active particulate
CN102100409A (zh) * 2010-09-15 2011-06-22 张锐 降焦油、止咳润喉用香烟过滤剂
CN102100410A (zh) * 2010-09-15 2011-06-22 张锐 降焦油、止咳、保健用香烟过滤剂
CN102100410B (zh) * 2010-09-15 2013-02-06 张锐 降焦油、止咳、保健用香烟过滤剂
CN102100409B (zh) * 2010-09-15 2013-02-06 张锐 降焦油、止咳润喉用香烟过滤剂
EP2636319A2 (fr) 2010-10-06 2013-09-11 Celanese Acetate LLC Filtres à fumée pour dispositifs à fumer avec des masses poreuses ayant une charge de particules de carbone et chute de pression encapsulée
US9179708B2 (en) 2010-10-15 2015-11-10 Celanese Acetate Llc Apparatuses, systems, and associated methods for forming porous masses for smoke filter
US9138017B2 (en) 2010-10-15 2015-09-22 Celanese Acetate Llc Apparatuses, systems, and associated methods for forming porous masses for smoke filter
US9149069B2 (en) 2010-10-15 2015-10-06 Celanese Acetate Llc Apparatuses, systems, and associated methods for forming porous masses for smoke filter
US9027566B2 (en) 2010-10-15 2015-05-12 Celanese Acetate Llc Apparatuses, systems, and associated methods for forming porous masses for smoke filter
WO2015103021A1 (fr) * 2013-12-30 2015-07-09 Philip Morris Products, S.A. Charbon actif pour articles à fumer
US10117456B2 (en) 2013-12-30 2018-11-06 Philip Morris Products S.A. Activated carbon for smoking articles
WO2019122468A1 (fr) 2017-12-21 2019-06-27 Universidad De Alicante Filtre combiné pour l'élimination de goudrons et de composés toxiques de la fumée du tabac

Also Published As

Publication number Publication date
RU2013113956A (ru) 2014-10-10
JP5421247B2 (ja) 2014-02-19
GB0709989D0 (en) 2007-07-04
UA97273C2 (ru) 2012-01-25
RU2631625C2 (ru) 2017-09-25
HUE036965T2 (hu) 2018-08-28
EP2150142B1 (fr) 2017-12-06
JP2010527599A (ja) 2010-08-19
KR101617465B1 (ko) 2016-05-02
KR20100020978A (ko) 2010-02-23
RU2009147972A (ru) 2011-06-27
EP2150142A1 (fr) 2010-02-10

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