US20080283071A1 - Cigarette Filter and Method of Its Manufacturing - Google Patents

Cigarette Filter and Method of Its Manufacturing Download PDF

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Publication number
US20080283071A1
US20080283071A1 US12/091,326 US9132606A US2008283071A1 US 20080283071 A1 US20080283071 A1 US 20080283071A1 US 9132606 A US9132606 A US 9132606A US 2008283071 A1 US2008283071 A1 US 2008283071A1
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US
United States
Prior art keywords
cigarette filter
nanofibres
microfibres
textile
configuration
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.)
Abandoned
Application number
US12/091,326
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English (en)
Inventor
Oldrich Jirsak
Filip Sanetrnik
Ondrej Novak
Pavel Pokorny
Ladislav Mares
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.)
Elmarco sro
Original Assignee
Elmarco sro
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 Elmarco sro filed Critical Elmarco sro
Assigned to ELMARCO, S.R.O. reassignment ELMARCO, S.R.O. ASSIGNMENT OF ASSIGNORS INTEREST (SEE DOCUMENT FOR DETAILS). Assignors: JIRSAK, OLDRICH, MARES, LADISLAV, NOVAK, ONDREJ, POKORNY, PAVEL, SANETRNIK, FILIP
Publication of US20080283071A1 publication Critical patent/US20080283071A1/en
Abandoned legal-status Critical Current

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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
    • 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
    • A24B—MANUFACTURE OR PREPARATION OF TOBACCO FOR SMOKING OR CHEWING; TOBACCO; SNUFF
    • A24B15/00—Chemical features or treatment of tobacco; Tobacco substitutes, e.g. in liquid form
    • A24B15/18—Treatment of tobacco products or tobacco substitutes
    • A24B15/28—Treatment of tobacco products or tobacco substitutes by chemical substances
    • A24B15/285—Treatment of tobacco products or tobacco substitutes by chemical substances characterised by structural features, e.g. particle shape or size
    • A24B15/286—Nanoparticles
    • 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
    • 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
    • A24D3/0225—Applying additives to filter materials with solid additives, e.g. incorporation of a granular product
    • 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
    • A24D3/0229—Filter rod forming processes
    • A24D3/0245—Filter rod forming processes by winding, e.g. spirally
    • 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
    • A24D3/08—Use of materials for tobacco smoke filters of organic materials as carrier or major constituent

Definitions

  • the invention relates to the cigarette filter containing the microfibres and to the method of its manufacturing.
  • cigarette filters The function of cigarette filters is to catch the health harmful components of cigarette smoke, especially of organic substances being produced at imperfect burning of tobacco and cigarette paper.
  • Filters are mostly made of filtration or more precisely of crepe papers or fibrous cables or systems in its essence of parallel yarns or threads, while all executions are made of microfibres from material with minimum impact to the “taste” of cigarette, which is e.g. cellulose acetate.
  • material and structure of cable as well as the rest of other parts of filter does not cause distinct increase in pressure gradient between both ends of filter, which could have a decisive and negative influence from the point of view of the consumer.
  • the general tendency is to increase the efficiency of separation of health harmful components of cigarette smoke, thus reducing the health risks connected especially with active smoking.
  • One possibility how to increase the efficiency of separation is a change of sorptive properties of cigarette filter which leads to a substantial change of its structure and to production of divided cigarette filters.
  • These are the filters created by several sections of cellulose acetate cable or of filtration paper, between which there is positioned a sorptive element containing a substance having advantageous sorptive properties, e.g. the granulated activated carbon. Nevertheless thanks to this change in structure of cigarette filters these show relatively high pressure loss, and moreover the demands and costs for manufacturing of such cigarette filters increase.
  • the objective of the invention is to eliminate disadvantages of the present state of the art and to form a cigarette filter with high sorptive and filtration properties, at the same time increasing the price as low as possible.
  • a cigarette filter containing the microfibres according to the invention whose principle consists in that it contains from 0.5 to 10% by weight of polymeric nanofibres, which are arranged between the microfibres, while according to the claim 2 it is advantageous if the nanofibres are arranged evenly among the microfibres within the whole volume of cigarette filter.
  • the nanofibres arranged among the microfibres increase substantially the filter specific surface, at the same time due to their low ratio on the total weight of filter and arrangement of nanofibres among the microfibres they increase minimally the filter pressure loss.
  • the most advantageous content of nanofibres in cigarette filter is within the range of 0.5 to 3.0% by weight.
  • microfibres are arranged into linear or surface configurations, while the spaces being created among these configurations, or more precisely among the configurations containing the microfibres as the main component in the quantity of 90% at minimum, or more precisely among microfibres, are according to the claim 4 filled with linear or surface textile configurations formed of nanofibres.
  • the textile configurations formed of nanofibres are arranged directly on the surface of textile configurations created by microfibres, while the characteristic dimension of textile configurations formed of nanofibres does not exceed 5 mm.
  • the advantage of joining the linear and surface configurations created by microfibres and nanofibres is, that the filtration material, already at relatively small content of nanofibres usually varying in units of percentage by weight, shows relatively high specific surface and at the same time thanks to a high content of microfibres it maintains nearly the same pressure gradient as the cigarette filters created exclusively by microfibres.
  • the textile configurations created by nanofibres are the shreds of surface nanofibre textile having dimensions up to 5 ⁇ 5 mm.
  • the nanofibres eventually the shreds of surface nanofibre textile are applied on the surface of a crepe paper containing microfibres in the quantity at least of 90% by weight, which is after then rolled down into a shape of cylinder creating the cigarette filter.
  • the nanofibres or the shreds of surface textile configuration formed of nanofibres are applied on the surface and/or inside of the surface or linear textile configuration formed of microfibres, out of which the body of cigarette filter is further produced, while the linear textile configuration formed of nanofibres is with advantage represented by a microfibrous cable, microfibrous thread or microfibrous yarn.
  • An advantageous manufacturing method of a cigarette filter according to the invention is a method, when the nanofibres or shreds of surface textile configuration formed of nanofibres are brought to the surface of the configuration designated for production of cigarette filter created at least by 90% of microfibres, which are deposited on its surface or into its structure in the quantity from 0.5 to 10% by weight, after then the configuration with nanofibres will be rolled down or otherwise formed into the shape of cylinder creating the cigarette filter.
  • the quantity of nanofibres is within the range from 0.5 to 3.0% by weight.
  • Another advantageous method is depositing of nanofibres or shreds of surface nanofibrous textile on the surface of the crepe paper, which is after then rolled down through which the cigarette filter is created.
  • Another advantageous manufacturing method of a cigarette filter according to the invention is depositing of nanofibres or shreds of surface nanofibrous textile on the surface and/or in the volume of the surface textile configuration, which is consequently shaped into a cylinder creating the cigarette filter.
  • Another advantageous manufacturing method of a cigarette filter according to the invention is depositing of nanofibres or shreds of surface nanofibrous textile on the surface and/or into the volume of linear textile configuration.
  • FIG. 1 shows a cigarette with filter
  • FIG. 2 a longitudinal section through the cigarette filter of the microfibrous cable with nanofibres among microfibres
  • FIG. 3 a longitudinal section through the cigarette filter made of microfibrous cable with shreds of nanofibrous textile among microfibres
  • FIG. 4 a longitudinal section through the cigarette filter made of microfibrous threads or microfibrous yarns, among which there are nanofibres,
  • FIG. 5 a longitudinal section through the cigarette filter made of microfibrous threads or microfibrous yarns among which there are shreds of nanofibrous textile,
  • FIG. 6 shows a cigarette filter of crepe paper
  • FIG. 7 a longitudinal section through the cigarette filter made of crepe paper containing the microfibres on whose surface there are nanofibres,
  • FIG. 8 a longitudinal section through the cigarette filter made of crepe paper, among whose layers there are shreds of nanofibrous textile.
  • the cigarette filter 2 is created by a tubular body whose one face is attached to the tobacco tubular section 3 of the cigarette, and the second face is free.
  • the tubular body of cigarette filter is formed of fibrous cable or a system of fibrous cables with in its essence parallel fibres, eventually of a system in its essence of parallel threads or yarns while the fibres, yarns or threads are positioned parallel with the direction of fumes flow through the filter and they are created by fibres, whose diameter varies from 1 to 40 micrometers, and therefore hereinafter they will be referred to as microfibres 21 .
  • nanofibres 22 in the quantity up to 10% by weight. At the same time it is advantageous if the nanofibres 22 among the microfibres 21 are arranged evenly within the whole volume of the cigarette filter 2 .
  • the cigarette filter 2 has a much more greater specific surface, thus also filtration and sorptive properties than it is at the classic cigarette filter, which is created by microfibres only, because for example the mixture, containing 99 percentage by weight of microfibres 21 having diameter of 20 micrometers and 1 percentage by weight of nanofibres 22 having diameter of 0.2 micrometer (200 nm), has a double specific surface than it is at usage of the microfibres 21 only, at the same time thanks to the possibility to regulate the size of poruses upon production of the filter 2 , it enables to reach a relatively small pressure loss, which at usage of this material reaches the values less than 5% of the total pressure gradient.
  • Cigarette filters formed of mixture of microfibres and nanofibres that differ by proportion of individual components, their mutual arrangement and the production itself shall be described in the following text.
  • the cigarette filter 2 according to the FIG. 2 is formed of the microfibrous cable, at which among the microfibres 21 there are arranged nanofibres 22 .
  • the microfibrous cable may be formed of a system of microfibrous cablets and the nanofibres 22 are arranged both among the microfibres 21 of individual cablets and among the cablets.
  • the microfibrous cable commonly used for production of cigarette filters in the rolled out status that means in the shape of a ribbon, led by the continuously running equipment for production of nanofibres, e.g. by an electrostatic spinning device, in which it serves as the base material, on which the produced nanofibres are deposited, while the content of nanofibres in such created filtration material, which is after then in a known manner further processed to the cigarette filter, with advantage varies in the range from 0.5 to 3.0 percentage by weight.
  • the cigarette filter 2 according to the FIG. 3 is again formed of microfibrous cable, at which among microfibres 21 there are arranged shreds 23 of surface nanofibrous textile having dimensions up to 5 ⁇ 5 mm. In the not illustrated example of embodiment they may be formed even of linear nanofibrous textile material, when their maximum dimension varies up to 5 mm.
  • the shreds 23 of surface nanofibrous textile which are caught between the microfibres 21 of the cable and for example due to the underpressure in the space behind the rolled out microfibrous cable the shreds 23 will get among the microfibres 21 inside the rolled out cable, which is after then in a common manner formed into the tubular shape and so it creates the cigarette filter according to the FIG. 3 .
  • the content of nanofibres 22 in the resultant cigarette filter varies in the range 0.2-2.5 percentage by weight.
  • the cigarette filter is formed of nanofibrous threads 24 or microfibrous yarns among which, at the embodiment according to the FIG. 4 , there are arranged nanofibres 22 , and at the embodiment according to the FIG. 5 , among the microfibrous threads 24 or yarns there are arranged the shreds 23 of surface nanofibrous textile.
  • the system of microfibrous threads 24 or yarns is straightened into a planar configuration in which the microfibrous threads 24 or yarns are to be found side by side, with advantage closely side by side, in one or in more layers.
  • This planar configuration is passing through the electrostatic spinning device, while it creates the base material on which the nanofibres 22 are deposited in a known manner. Consequently the system of microfibrous threads 24 or yarns with applied nanofibres 22 is processed in a known manner into a tubular shape and so it creates the cigarette filter.
  • the system of microfibrous threads 24 or yarns is straightened into a planar configuration in which the microfibrous threads 24 or yarns are to be found side by side, with advantage closely side by side, in one or in more layers, after then the shreds 23 of surface nanofibrous textile having dimensions of up to 5 ⁇ 5 mm are brought to this planar configuration by an airstream. Consequently the system of microfibrous threads 24 or yarns with shreds 23 of nanofibres arranged among the microfibrous threads 24 or yarns will be processed in a known manner into the tubular shape and so it creates the cigarette filter 2 .
  • the cigarette filter is formed of a crepe paper 25 , which is at least of 90% by weight composed of microfibres.
  • a crepe paper 25 which is at least of 90% by weight composed of microfibres.
  • nanofibres 22 At the embodiment according to the FIG. 7 on surface of a crepe paper 25 there are applied nanofibres 22 , while they create a layer whose thickness may be variable or irregular.
  • the shreds 23 of surface nanofibrous textile are applied on surface of a crepe paper.
  • the content of nanofibres in both cases varies in the range 0.8-3.5 percentage by weight.
  • the crepe paper 25 before being rolled down into a shape of cylinder brings the base material into an electrostatic spinning device where the nanofibres 22 are deposited on it in a known manner thus creating a layer. Consequently the crepe paper 25 with applied layer of nanofibres 22 will be rolled down into a shape of cylinder creating the cigarette filter 2 .
  • the crepe paper 25 in the rolled out status Upon production of the cigarette filter according to the FIG. 8 , on the crepe paper 25 in the rolled out status, the shreds 23 of surface nanofibrous textile having dimensions to 5 ⁇ 5 mm are brought by an airstream. Consequently the crepe paper 25 with shreds 23 will be rolled down in a known manner into a shape of cylinder creating the cigarette filter 2 .
  • the quantity of nanofibres 22 which the cigarette filter 2 according to the invention contains may be even higher than it is described in the given examples of embodiment, nevertheless with respect to economy of production of cigarette filters and cigarettes in general, the maximum quantity of polymeric nanofibres 22 in the cigarette filter 2 is from 0.5 to 10% by weight.
  • Lower quantity of nanofibres 22 than 0.5% by weight brings only a small improvement of filtration and sorptive properties of the cigarette filter and quantity of nanofibres 22 greater than 10% by weight increases the filter price considerably.
  • the most advantageous content of nanofibres 22 in the cigarette filter 2 lies within the range from 0.5 to 3.0 percentage by weight.
  • the invention is not limited only to the described embodiments of cigarette filters and method of their manufacturing, but it contains also their combinations and further embodiments of cigarette filters which contain the mixture of microfibres and nanofibres, when the quantity of nanofibres in the mixture varies from 0.5 to 10% by weight.

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  • Chemical & Material Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Materials Engineering (AREA)
  • Nanotechnology (AREA)
  • Health & Medical Sciences (AREA)
  • General Health & Medical Sciences (AREA)
  • Toxicology (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • General Chemical & Material Sciences (AREA)
  • Cigarettes, Filters, And Manufacturing Of Filters (AREA)
  • Filtering Materials (AREA)
  • Nonwoven Fabrics (AREA)
US12/091,326 2005-10-24 2006-10-24 Cigarette Filter and Method of Its Manufacturing Abandoned US20080283071A1 (en)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
CZPV2005-670 2005-10-24
CZ20050670A CZ298892B6 (cs) 2005-10-24 2005-10-24 Cigaretový filtr a zpusob jeho výroby
PCT/CZ2006/000071 WO2007048359A1 (en) 2005-10-24 2006-10-24 Cigarette filter and method of its manufacturing

Publications (1)

Publication Number Publication Date
US20080283071A1 true US20080283071A1 (en) 2008-11-20

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Application Number Title Priority Date Filing Date
US12/091,326 Abandoned US20080283071A1 (en) 2005-10-24 2006-10-24 Cigarette Filter and Method of Its Manufacturing

Country Status (10)

Country Link
US (1) US20080283071A1 (ko)
EP (1) EP1973430A1 (ko)
JP (1) JP2009512455A (ko)
KR (1) KR20080059566A (ko)
CN (1) CN101296628A (ko)
AU (1) AU2006308344A1 (ko)
CA (1) CA2624770A1 (ko)
CZ (1) CZ298892B6 (ko)
EA (1) EA200800933A1 (ko)
WO (1) WO2007048359A1 (ko)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20140364290A1 (en) * 2011-12-30 2014-12-11 Philip Morris Products S.A. Apparatus and method for supplying a continuous web of crimped sheet material
US20150090282A1 (en) * 2012-05-03 2015-04-02 British American Tobacco (Investments) Limited Smoking article filters

Families Citing this family (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN101828770A (zh) * 2010-05-11 2010-09-15 四川三联卷烟材料有限公司 笑脸滤棒
CN102133530B (zh) * 2010-12-23 2012-08-01 陕西科技大学 一种香烟过滤嘴用纳米催化剂的制备方法
JP2013243973A (ja) * 2012-05-28 2013-12-09 Sumitomo Seika Chem Co Ltd 煙草用フィルタ
JP2017060405A (ja) * 2014-01-17 2017-03-30 日本たばこ産業株式会社 フィルタシガレット、シガレット用フィルタ、及びシガレット用フィルタに用いる巻取紙
GB201400990D0 (en) 2014-01-21 2014-03-05 British American Tobacco Co Filter materials and filters made therefrom
WO2015194039A1 (ja) * 2014-06-20 2015-12-23 株式会社ダイセル 短繊維集合体ペレット及びたばこフィルター並びにその製造方法
CN106418689B (zh) * 2016-09-28 2022-07-05 北京科技大学 一种卷烟嘴棒及其制备方法
CN108371345B (zh) * 2018-03-06 2021-04-20 上海洁晟环保科技有限公司 一种纳米纤维复合材料及其用途

Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20050133047A1 (en) * 2003-12-22 2005-06-23 Philip Morris Usa Inc. Smoking articles and filters with carbon-coated molecular sieve sorbent
US20050139223A1 (en) * 2003-07-21 2005-06-30 Squires Stephen B. Cigarette filter incorporating nanofibers

Family Cites Families (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2004080217A1 (en) * 2003-03-07 2004-09-23 Virginia Commonweath University Electroprocessed phenolic materials and methods

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20050139223A1 (en) * 2003-07-21 2005-06-30 Squires Stephen B. Cigarette filter incorporating nanofibers
US20050133047A1 (en) * 2003-12-22 2005-06-23 Philip Morris Usa Inc. Smoking articles and filters with carbon-coated molecular sieve sorbent

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20140364290A1 (en) * 2011-12-30 2014-12-11 Philip Morris Products S.A. Apparatus and method for supplying a continuous web of crimped sheet material
US20150090282A1 (en) * 2012-05-03 2015-04-02 British American Tobacco (Investments) Limited Smoking article filters
US10264816B2 (en) 2012-05-03 2019-04-23 British American Tobacco (Investments) Limited Smoking article filters

Also Published As

Publication number Publication date
EP1973430A1 (en) 2008-10-01
WO2007048359A1 (en) 2007-05-03
KR20080059566A (ko) 2008-06-30
CN101296628A (zh) 2008-10-29
AU2006308344A1 (en) 2007-05-03
EA200800933A1 (ru) 2008-10-30
CZ2005670A3 (cs) 2007-05-30
JP2009512455A (ja) 2009-03-26
CA2624770A1 (en) 2007-05-03
CZ298892B6 (cs) 2008-03-05

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AS Assignment

Owner name: ELMARCO, S.R.O., CZECH REPUBLIC

Free format text: ASSIGNMENT OF ASSIGNORS INTEREST;ASSIGNORS:JIRSAK, OLDRICH;SANETRNIK, FILIP;NOVAK, ONDREJ;AND OTHERS;REEL/FRAME:021026/0046

Effective date: 20080430

STCB Information on status: application discontinuation

Free format text: ABANDONED -- FAILURE TO RESPOND TO AN OFFICE ACTION