EP2234509B1 - Filter including randomly-oriented fibers for reduction of particle breakthrough - Google Patents

Filter including randomly-oriented fibers for reduction of particle breakthrough Download PDF

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Publication number
EP2234509B1
EP2234509B1 EP08864391A EP08864391A EP2234509B1 EP 2234509 B1 EP2234509 B1 EP 2234509B1 EP 08864391 A EP08864391 A EP 08864391A EP 08864391 A EP08864391 A EP 08864391A EP 2234509 B1 EP2234509 B1 EP 2234509B1
Authority
EP
European Patent Office
Prior art keywords
plug
filter
adsorbent
fibers
randomly
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
EP08864391A
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German (de)
English (en)
French (fr)
Other versions
EP2234509A1 (en
Inventor
Szu-Sung Yang
Jing C. Chang
Shirley Ha
Michael B. Maher
Lixin L. Xue
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.)
Philip Morris Products SA
Original Assignee
Philip Morris Products SA
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 Philip Morris Products SA filed Critical Philip Morris Products SA
Priority to PL08864391T priority Critical patent/PL2234509T3/pl
Priority to SI200830691T priority patent/SI2234509T1/sl
Publication of EP2234509A1 publication Critical patent/EP2234509A1/en
Application granted granted Critical
Publication of EP2234509B1 publication Critical patent/EP2234509B1/en
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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
    • A24D3/06—Use of materials for tobacco smoke filters
    • A24D3/062—Use of materials for tobacco smoke filters characterised by structural features
    • A24D3/063—Use of materials for tobacco smoke filters characterised by structural features of the fibers
    • 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
    • A24D3/0204—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
    • A24D3/0275—Manufacture of tobacco smoke filters for filters with special features
    • A24D3/0287—Manufacture of tobacco smoke filters for filters with special features for composite 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
    • A24D3/04—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
    • A24D3/08—Use of materials for tobacco smoke filters of organic materials as carrier or major constituent
    • A24D3/10—Use of materials for tobacco smoke filters of organic materials as carrier or major constituent of cellulose or cellulose derivatives
    • 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
    • A24D3/163—Carbon

Definitions

  • Cigarettes typically comprise filter elements that may have adsorbent materials, such as carbon, incorporated therein.
  • Filter elements adapted to be incorporated in a filter cigarette may comprise, for example, particles or granules of carbon, such as activated carbon or activated charcoal, other adsorbent materials or combinations thereof, incorporated within the cellulose acetate tow or in cavities between cellulose acetate material.
  • the filter assembly for a smoking article having reduced adsorbent particle breakthrough.
  • the filter assembly comprises an adsorbent including smoke entrainable adsorbent particles contained within the filter and a plug including randomly-oriented fibers.
  • the plug including randomly-oriented fibers provides reduced adsorbent particle breakthrough.
  • the filter assembly is a plug-space-plug filter.
  • the plug of randomly-oriented fibers is located downstream of the adsorbent.
  • the plug of randomly-oriented fibers is located immediately downstream of the adsorbent.
  • a plug of axially oriented fibers is located upstream of the adsorbent. In yet another embodiment, a plug of axially oriented fibers is located downstream of the adsorbent.
  • the filter assembly contains a plug of randomly-oriented fibers having a length of about 3 mm to about 10 mm.
  • One or more plugs of axially-oriented fibers can be added to adjust the length of the filter.
  • no axially-oriented fibers are included in the filter.
  • the filter assembly mechanically reduces adsorbent particle breakthrough.
  • a smoking article including a filter assembly that reduces or eliminates adsorbent particle breakthrough in mainstream smoke.
  • the smoking article includes a tobacco rod and a filter assembly.
  • the filter assembly is a plug-space-plug filter, wherein the space is filled with an adsorbent.
  • a plug of randomly-oriented fibers is located downstream of the space (cavity) filled with the adsorbent.
  • the tobacco rod includes tobacco material and a wrapper.
  • the filter assembly is attached to one end of the tobacco rod with tipping paper.
  • the method includes filling a cavity of a plug-space-plug filter assembly with an adsorbent, wherein the cavity is bordered by a plug of randomly-oriented fibers and a plug of cellulose acetate.
  • the cellulose acetate plug is a plug of axially oriented fibers.
  • a method of making a filter comprising: placing plugs of 2-up axially-oriented fibers in spaced apart relationship; placing plugs including randomly-oriented fibers between the 2-up plugs such that cavities are formed at upstream and downstream ends of every other 2-up plug; placing an adsorbent including smoke entrainable adsorbent particles in the cavities; and cutting every other of said plugs of 2-up axially-oriented fibers centrally to form 2-up filter assemblies.
  • the method may further include attaching a tobacco rod to each end of said 2-up filter assemblies and cutting said 2-up filter assemblies centrally to form complete cigarettes.
  • a filter adapted to be incorporated into a smoking article such as a filter cigarette.
  • the filter comprises filter material that includes randomly-oriented fibers.
  • the randomly-oriented fibers mechanically trap adsorbent particles entrained in mainstream smoke.
  • the terminology “smoke entrainable particles” describes beads, granules, dust, fines, powders and the like having a size of about 0.1 micron to about 10 microns, which may become entrained in mainstream smoke.
  • randomly-oriented fibers As used herein, the terms "randomly-oriented fibers,” “plug of randomly-oriented fibers” and “randomly-oriented” describe woven and non-woven fibers including tangled continuous filaments oriented in various directions that are not substantially parallel to the flow of mainstream smoke as it passes through a smoking article. In contrast, axially oriented fibers in a filter plug are substantially parallel to the flow of mainstream smoke, and are formed in a continuous tow band running on the axial direction with minimum entanglement. "Randomly-oriented fibers”, “plug of randomly-oriented fibers” and “randomly-oriented” also describe non-woven materials that can be made using dry laid or wet laid processes including point bound, spun bound, needle felt, needle punch, suspension in water, etc. Details of manufacturing techniques for making filter rods having randomly oriented fibers can be found in U.S. Patent Nos. 3,111,702 , 4,540,625 and 5,817,159 .
  • the filter is adapted to be incorporated in a filter cigarette.
  • Cigarette filters are made in a variety of designs.
  • cigarette filters comprise four main components: a filter tow such as a bundle of cellulose acetate fibers or paper that comprise the bulk of the filter; a plasticizer (i.e ., a softening agent added to bind the filter fibers together into a continuous filter rod); a plug wrap ( i.e ., a paper wrapper that is used to contain the filter material); and an adhesive used to secure the plug wrap to the continuous filter rod.
  • Filter rods for making cigarette filters which can be attached to tobacco rods ( e.g ., attached with tipping paper) to produce filter cigarettes, can be made by forming a bundle or tow of filter material into a rod using a rod forming apparatus.
  • a filter rod comprises up to thirty thousand filaments of filter material.
  • a preferred filter material used to form a filter rod is cellulose acetate, which is a cellulose ester.
  • a plasticizer or binder such as triacetin is added to the tow before it is passed into the rod forming apparatus. Furthermore, the tow can be spread and fluffed up, or "bloomed,” usually by placing the tow under tension and passing it over air jets. The bloomed tow can be passed through a funnel or other constricting device and then through a shaped aperture to form the filter rod.
  • the plasticizer which can be added to the tow during or after blooming, can enhance the bonding of the filaments to each other at their cross-over points when the tow is gathered.
  • addition of a plasticizer can increase the firmness of the filter rod formed from the tow.
  • the plasticizer may also have filtration properties.
  • the attributes of the finished filter rod e.g ., filtration efficiency, firmness, dimensional stability, etc.
  • curing e.g ., heating
  • Exemplary filter structures include, but are not limited to, a mono filter, a dual filter, a triple filter, a cavity filter, a recessed filter, a free-flow filter or combinations thereof.
  • Mono filters typically contain cellulose acetate tow or cellulose paper materials.
  • Mono cellulose filters or paper filters can be effective filters for tar and/or nicotine.
  • Dual filters typically comprise a cellulose acetate mouth end and a pure cellulose or cellulose acetate segment. The length and pressure drop of the segments in a dual filter can be adjusted to provide the desired filtration (i.e ., adsorption and/or absorption) and resistance to draw (RTD).
  • the filter element can be attached to a tobacco rod to form a filter cigarette.
  • a cut filler composition can be combined with other cigarette additives and provided to a cigarette-making machine to produce a tobacco column, which is then wrapped in cigarette paper to form a tobacco rod that is cut into sections, and optionally tipped with a filter.
  • the resulting cigarettes can be manufactured to desired specifications using standard or modified cigarette making techniques and equipment.
  • Cigarettes may range from about 50 mm to about 120 mm in length. The circumference is typically from about 15 mm to about 30 mm, preferably around 25 mm.
  • the tobacco packing density is typically between the range of about 100 mg/cm 3 to about 300 mg/cm 3 , and preferably about 150 mg/cm 3 to about 275 mg/cm 3 .
  • Tobacco cut filler is normally in the form of shreds or strands cut into widths ranging from about 1/10 inch to about 1/20 inch or even about 1/40 inch (about 2.5 mm to about 1.3 mm or even about 0.6 mm).
  • the lengths of the strands range from about 0.25 inches to about 3 inches (between about 6.4 mm to about 76 mm).
  • the cigarettes may further comprise one or more flavorants or other additives (e.g. , bum additives, combustion modifying agents, coloring agents, binders, etc .).
  • Any suitable tobacco mixture may be used for the cut filler.
  • suitable types of tobacco materials include flue-cured, Burley, Bright, Maryland or Oriental tobaccos, the rare or specialty tobaccos, and blends thereof.
  • the tobacco material can be provided in the form of tobacco lamina, processed tobacco materials such as volume expanded or puffed tobacco, processed tobacco stems such as cut-rolled or cut-puffed stems, reconstituted tobacco materials, or blends thereof.
  • the tobacco can also include tobacco substitutes.
  • mainstream smoke refers to the mixture of gases passing down the tobacco rod and issuing through the filter end, i.e ., the amount of smoke issuing or drawn from the mouth end of a cigarette during smoking of the cigarette.
  • the mainstream smoke contains smoke that is drawn in through both the lighted region, as well as through the cigarette paper wrapper.
  • side stream smoke refers to smoke produced during static burning.
  • Prior art plug-space-plug carbon filters 105 include a bed 115 of an adsorbent 112, such as activated carbon, between plugs 130 of axially oriented fibers.
  • the axially oriented fibers are cellulose acetate fibers.
  • the plug-space-plug filter 105 is attached to a tobacco rod 160 that is wrapped with wrapping paper 170 to form a smoking article 100.
  • Tipping paper 165 surrounds the filter 105 and a portion of the tobacco rod 160.
  • a filter assembly for a smoking article produces potentially reduced and/or eliminated adsorbent particle breakthrough by improving the mechanical capture of smoke entrainable particles.
  • the filter assembly 10 is a plug-space-plug oriented filter assembly. As seen in Figure 2 , preferably, the filter assembly 10 is a plug-space-plug filter. Preferably, a portion of an adsorbent 12, including smoke entrainable particles, is located in the inner cavity 15 of the filter 10, and a plug 16 of randomly-oriented fibers 14 is located downstream to reduce adsorbent particle breakthrough as mainstream smoke passes through the filter assembly 10. In theory, because the fibers 14 are not axially aligned, the adsorbent particles do not travel through the channels between the fibers or along the fibers, thereby reducing or eliminating adsorbent particle breakthrough in mainstream smoke.
  • the adsorbent and/or smoke entrainable particles include any suitable adsorbent media.
  • exemplary adsorbents include molecular sieves such as zeolites, silicas, silicates, aluminas, carbons ( e.g . activated carbon) or combinations thereof.
  • a preferred adsorbent media is activated carbon.
  • the filter assembly includes about 30 mg to about 200 mg of the adsorbent.
  • activated carbon any porous, high surface area form of carbon.
  • Activated carbon can be derived via thermal treatment of any suitable carbon source. The activation treatment typically increases the porosity, and activated carbon can be provided with a wide range of pore sizes or the pore sizes can be controlled to provide a desired pore size distribution.
  • the carbon is in the form of granules and the like.
  • the carbon of the preferred embodiment is a high surface area, activated carbon, for example a coconut shell based carbon of typical ASTM mesh size used in the cigarette industry or finer.
  • a particularly preferred activated carbon is commercially available from PICA USA, Inc., Truth or Consequences, New Mexico.
  • the activated carbon could also be manufactured via the carbonization of coal, wood, pitch, peat, cellulose fibers, lignite and olive pits. Carbonization is usually carried out at elevated temperatures, e.g ., 400°C-1000°C in an inert atmosphere, followed by activation ( i.e ., calcining) under reducing or oxidizing conditions.
  • the activated carbon can be in the form of beads. In other embodiments, the activated carbon can be in the form of granules, fibers or combinations thereof.
  • the activated carbon is adapted to adsorb constituents of mainstream smoke, particularly, those of the gas phase including aldehydes, ketones and other volatile organic compounds, and in particular 1,3-butadiene, acrolein, isoprene, propionaldehyde, acrylonitrile, benzene, toluene, styrene, acetaldehyde and hydrogen cyanide.
  • the carbon can be in the form of carbon on tow, carbon paper or combinations thereof.
  • the activated carbon can comprise granulated particles ranging in size from about 100 microns to about 5 mm.
  • the particles of activated carbon have an average size of from about 0.2 mm to about 2 mm ( e.g ., about 200, 500, 1000 or 2000 microns).
  • Activated carbon beads contained in the filter assembly preferably range in size from 0.20 mm to about 0.70 mm, as described in U.S. Patent Application Publication No. 2003/0154993 .
  • activated carbon can have any desired pore size distribution that comprises pores such as micropores, mesopores and macropores.
  • microporous generally refers to such materials having pore sizes of about 20 Angstroms or less while the term “mesoporous” generally refers to such materials with pore sizes of about 20-500 Angstroms.
  • the activated carbon can be selected to have an appropriate surface area to preferentially adsorb or absorb or both targeted constituents from smoke.
  • the preferred activated carbon typically has a surface area greater than about 50 m 2 /g ( e.g ., at least about 100, 200, 500, 1000 or 2000 m 2 /g).
  • the absorptive capacity of the activated carbon increases with increasing surface area.
  • surface area typically increases with decreasing particle size.
  • carbon particles having a small particle size may pack together too densely to permit smoke to flow through the filter with desired resistance to draw (RTD) during smoking.
  • RTD resistance to draw
  • the particle size is too large there may be insufficient surface area to accomplish the desired degree of filtration. Therefore, such factors can be taken into account in selecting carbon particles suitable for filtration of one or both of mainstream and sidestream smoke.
  • the adsorbent is flavor-bearing or otherwise impregnated with a flavor so that the adsorbent is adapted not only to remove one or more gas phase smoke constituents from smoke, but also to release flavor into the mainstream smoke stream.
  • flavor can be added to activated carbon by spraying flavorant upon a batch of activated carbon in a mixing (tumbling) drum or alternatively in a fluidized bed with nitrogen as the fluidizing agent, wherein flavorant may then be sprayed onto the carbon in the bed.
  • the randomly-oriented fibers are cellulose acetate fibers.
  • the randomly-oriented fibers are polyester fibers, polypropylene fibers, and the like.
  • the randomly-oriented fibers can be woven and/or non-woven where the fibers are randomly joined together.
  • the fibers have a Y-shaped cross-section.
  • the fibers can have a semi-open shape or cross-section with an open void such as the fibers disclosed in U.S. Patent No. 6,919,105 , U.S. Patent No. 6,913,784 , and/or U.S. Patent No.6,907,885 .
  • the buccal end 20 of the filter assembly 10 is preferably in the form of a plug 16 of randomly-oriented fibers 14.
  • the plug 16 is positioned downstream of the adsorbent 12, held in cavity 15, to prevent adsorbent particles, having a size of about 0.1 micron to about 10 microns, from traveling through the channels between the fibers or migrating along the fibers or both as in prior filter assemblies using axially oriented fibers.
  • a plug 25 of axially oriented fibers 30 is upstream of the adsorbent 12.
  • smoke is drawn first through the plug 25 of axially oriented fibers 30, through the adsorbent 12, and downstream through the plug 16 of randomly-oriented fibers 14. Because of the random orientation of the downstream plug 16 of fibers, the adsorbent particles are not able to travel through the channels between the fibers or migrate along the fibers or both, resulting in the mechanical capture of the adsorbent particles entrained in mainstream smoke.
  • the filter assembly 10 includes a portion of an adsorbent 12 in a cavity 15. On each side of the portion of adsorbent 12 lies a plug 16 of randomly-oriented fibers 14.
  • the filter assembly 10 includes a cavity 15 filled with an adsorbent 12.
  • a plug 16 of randomly-oriented fibers 14 is located immediately downstream of the cavity 15 filled with the adsorbent 12.
  • a plug 25 of axially oriented fibers 30 is located immediately upstream of the cavity 15.
  • a plug 25 of axially oriented fibers 30 is located immediately downstream of the plug 16 containing randomly-oriented fibers 14.
  • the filter assembly 10 is adapted to be incorporated in a smoking article 50.
  • smoking article includes cigarettes, cigars, pipes, and cigarillos.
  • Non-traditional cigarettes such as cigarettes for electrical smoking systems, as described in commonly-assigned U.S. Patents 6,026,820 ; 5,988,176 ; 5,915,387 ; and 5,499,636 , are also included in the definition of smoking articles or cigarettes generally.
  • the smoking article is a cigarette.
  • the cigarette may contain tobacco material and a filter.
  • the cigarette may also contain at least one sorbent.
  • a traditional cigarette typically contains two sections, a tobacco-containing portion sometimes referred to as the tobacco rod, and a filter portion which may be referred to as the filtration zone.
  • Tipping paper typically surrounds the filter, which forms the buccal end of the cigarette. The tipping paper overlaps with the tobacco rod in order to hold the filter and tobacco rod together.
  • the tobacco rod or tobacco containing element of the cigarette includes the paper wrapper in which the tobacco is wrapped and the adhesive holding the seams of the paper wrapper together.
  • the tobacco rod has a first end which is integrally attached to the filter and a second end which is lit or heated for smoking the tobacco. When the tobacco rod is lit or heated for smoking, the smoke travels from the lit end downstream to the filter end of the tobacco rod and further downstream through the filter.
  • a 6 mm cellulose acetate plug consisting of randomly oriented cellulose acetate fibers is placed downstream of a cavity filled with 110 mg of activated carbon to form a filter.
  • a laser light scattering particle counter was placed next to a cigarette holder aligned with the air flow through the cigarette.
  • the filter was inserted into a cigarette filter holder to a depth of approximately 9 ⁇ 1 mm and machine puffed under non-lit (dry-puff) condition using a 55 ml/puff; 2 second puff duration; 12 puffs/cig profile.
  • Table 1 illustrates the results of the tests and compares filters constructed according to Example 1 (Test #1 and #2) with traditional plug-space-plug filters having a cavity filled with activated carbon and a plug of axially-oriented cellulose acetate fibers located both upstream and downstream of the activated carbon (Control).
  • Test#1 filters constructed according to Example 1, containing randomly-oriented cellulose acetate fibers showed an average carbon particle breakthrough of about 251 particles per cigarette.
  • the particle breakthrough ranged from about 22 particles to about 351 particles per cigarette, which is a significant reduction from the control cigarette filters.
  • control filter not including randomly-oriented cellulose acetate fibers, showed an average carbon particle breakthrough of about 1097 particles per cigarette.
  • control filter not including randomly-oriented cellulose acetate fibers

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  • Chemical & Material Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Materials Engineering (AREA)
  • Inorganic Chemistry (AREA)
  • Cigarettes, Filters, And Manufacturing Of Filters (AREA)
EP08864391A 2007-12-20 2008-12-22 Filter including randomly-oriented fibers for reduction of particle breakthrough Active EP2234509B1 (en)

Priority Applications (2)

Application Number Priority Date Filing Date Title
PL08864391T PL2234509T3 (pl) 2007-12-20 2008-12-22 Filtr zawierający losowo ułożone włókna w celu ograniczenia przebicia cząstkami stałymi
SI200830691T SI2234509T1 (sl) 2007-12-20 2008-12-22 Filter, ki vključuje naključno usmerjena vlakna za zmanjšanje prodiranja delcev

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
US830507P 2007-12-20 2007-12-20
PCT/EP2008/011108 WO2009080368A1 (en) 2007-12-20 2008-12-22 Filter including randomly-oriented fibers for reduction of particle breakthrough

Publications (2)

Publication Number Publication Date
EP2234509A1 EP2234509A1 (en) 2010-10-06
EP2234509B1 true EP2234509B1 (en) 2012-07-04

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EP08864391A Active EP2234509B1 (en) 2007-12-20 2008-12-22 Filter including randomly-oriented fibers for reduction of particle breakthrough

Country Status (18)

Country Link
US (1) US20100006112A1 (pt)
EP (1) EP2234509B1 (pt)
JP (1) JP2011505851A (pt)
KR (1) KR20100094476A (pt)
CN (1) CN101873810A (pt)
AU (1) AU2008340634B2 (pt)
BR (1) BRPI0821407B1 (pt)
CO (1) CO6220886A2 (pt)
DK (1) DK2234509T3 (pt)
EA (1) EA017412B1 (pt)
ES (1) ES2390740T3 (pt)
MY (1) MY148735A (pt)
NZ (1) NZ584674A (pt)
PL (1) PL2234509T3 (pt)
PT (1) PT2234509E (pt)
SI (1) SI2234509T1 (pt)
UA (1) UA99496C2 (pt)
WO (1) WO2009080368A1 (pt)

Families Citing this family (27)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20080314400A1 (en) * 2007-05-31 2008-12-25 Philip Morris Usa Inc. Filter including electrostatically charged fiber material
US8534294B2 (en) 2009-10-09 2013-09-17 Philip Morris Usa Inc. Method for manufacture of smoking article filter assembly including electrostatically charged fiber
CN101711604B (zh) * 2009-12-24 2012-02-15 湖南中烟工业有限责任公司 一种卷烟滤嘴用降焦减害纤维素球及其制备
CN101828769B (zh) * 2010-04-16 2011-08-31 云南正邦生物技术有限公司 卷烟香气补偿颗粒的制备方法
EP2401929A1 (en) * 2010-06-30 2012-01-04 Philip Morris Products S.A. Filter for a smoking article
EP2462822A1 (en) 2010-12-13 2012-06-13 Philip Morris Products S.A. Smoking article including flavour granules
GB201104232D0 (en) * 2011-03-14 2011-04-27 British American Tobacco Co Smoking article and method of manufacturing a smoking article
GB201110863D0 (en) * 2011-06-27 2011-08-10 British American Tobacco Co Smoking article filter and insertable filter unit thereof
UA112328C2 (uk) * 2011-11-07 2016-08-25 Філіп Морріс Продактс С.А. Ментолвмісний курильний виріб
GB2503644A (en) * 2012-05-03 2014-01-08 British American Tobacco Co Filter
GB201316210D0 (en) * 2013-09-11 2013-10-30 Filtrona Filter Prod Dev Co Tobacco smoke filter
ITBO20130521A1 (it) * 2013-09-25 2015-03-26 Gd Spa Metodo per la realizzazione di articoli da fumo.
CN103750560A (zh) * 2013-12-20 2014-04-30 苏州鑫帛泰纺织科研有限公司 复合排列过滤纤维香烟滤嘴
EP2901871A1 (en) * 2014-01-31 2015-08-05 Philip Morris Products S.A. Multi-segment filter tube
KR20170119693A (ko) * 2015-02-18 2017-10-27 제이티 인터내셔널 소시에떼 아노님 고용량의 첨가제를 갖는 담배 제품 용 필터
TW201703657A (zh) * 2015-07-17 2017-02-01 菲利浦莫里斯製品股份有限公司 用於吸菸製品的活性碳珠
EP3506770A1 (en) 2016-12-19 2019-07-10 JT International S.A. Filters for smoking articles for less additive(s) loss
CN107836749A (zh) * 2017-10-23 2018-03-27 上海聚华科技股份有限公司 含有硅胶香珠的卷烟嘴棒以及烟用硅胶香珠制备方法
CN107568790A (zh) * 2017-10-23 2018-01-12 上海聚华科技股份有限公司 含有沸石香珠的卷烟嘴棒以及烟用沸石香珠制备方法
KR20200113204A (ko) 2018-02-01 2020-10-06 제이티 인터내셔널 소시에떼 아노님 개선된 맛을 갖는 생분해성 필터
JP7414721B2 (ja) * 2018-03-08 2024-01-16 フィリップ・モーリス・プロダクツ・ソシエテ・アノニム エアロゾル発生物品
KR20200125614A (ko) * 2018-03-08 2020-11-04 필립모리스 프로덕츠 에스.에이. 에어로졸 발생 물품
US20210251280A1 (en) * 2018-10-29 2021-08-19 Nerudia Limited Smoking substitute consumable
KR20200061132A (ko) * 2018-11-23 2020-06-02 주식회사 케이티앤지 에어로졸 생성 물품 및 에어로졸 생성 시스템
CN109864336A (zh) * 2019-03-20 2019-06-11 福建绿色黄金生物科技有限公司 过滤嘴及烟制品
CN111296889A (zh) * 2020-03-13 2020-06-19 福建中烟工业有限责任公司 一种烟草制品滤棒及烟草制品
CN113679096B (zh) * 2021-08-31 2024-09-17 安徽中烟工业有限责任公司 一种颗粒型加热卷烟烟支及其制备方法

Family Cites Families (20)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2805671A (en) * 1953-10-07 1957-09-10 Liggett & Myers Tobacco Co Aerosol filters
DE1243072B (de) * 1963-07-22 1967-06-22 Hauni Werke Koerber & Co Kg Verfahren und Vorrichtung zum Herstellen von Filterstaeben oder anderen aus mindestens zwei Teilen bestehenden stabfoermigen Gegenstaenden
US3656484A (en) * 1968-11-13 1972-04-18 Celanese Corp Filter
GB1381800A (en) * 1972-04-26 1975-01-29 Rothmans Of Pall Mall Filter for tobacco smoke
US4197863A (en) * 1974-05-02 1980-04-15 Benjamin Clayton Tobacco smoke filter
CH647935A5 (fr) * 1980-08-04 1985-02-28 Molins Ltd Procede pour la production d'un materiau de remplissage, machine pour sa mise en oeuvre, application du procede et installation pour la production d'un boudin de filtres de cigarettes.
JPS5831981A (ja) * 1981-08-20 1983-02-24 ダイセル化学工業株式会社 たばこ煙のフイルタ−
DE3439907A1 (de) * 1984-10-31 1986-04-30 Alexei 8000 München Filippenko Filter fuer das rauchen nikotin- und schadstofffreier zigaretten
JP3426694B2 (ja) * 1994-03-31 2003-07-14 日本たばこ産業株式会社 フィルタ装着機のフィルタプラグ供給装置
JP3181248B2 (ja) * 1997-10-06 2001-07-03 日本たばこ産業株式会社 フィルター付きシガレットおよびシガレット用フィルター
JPH11178559A (ja) * 1997-12-22 1999-07-06 Tomotoshi Wakatsuki 煙草フィルタ並びにそれを用いた煙草及び喫煙パイプ
CA2481381C (en) * 2002-04-12 2012-11-13 Philip Morris Products S.A. Activated carbon fiber cigarette filter
DE10217410A1 (de) * 2002-04-18 2003-10-30 Hauni Maschinenbau Ag Zigarettenfilter und Verfahren zur Herstellung desselben
US20050199251A1 (en) * 2002-08-08 2005-09-15 Susilo Wonowidjojo Method for producing filter cigarettes
ITBO20040238A1 (it) * 2004-04-22 2004-07-22 Gd Spa Filtro per sigaretta e relativo metodo di realizzazione
US8408216B2 (en) * 2004-12-22 2013-04-02 Philip Morris Usa Inc. Flavor carrier for use in smoking articles
US20060144410A1 (en) * 2004-12-30 2006-07-06 Philip Morris Usa Inc. Surface-modified activated carbon in smoking articles
US7503960B2 (en) * 2005-03-15 2009-03-17 Philip Morris Usa Inc. Smoking articles and filters with carbon fiber composite molecular sieve sorbent
US20080314400A1 (en) * 2007-05-31 2008-12-25 Philip Morris Usa Inc. Filter including electrostatically charged fiber material
US9204668B2 (en) * 2007-09-18 2015-12-08 Philip Morris Usa Inc. Cigarette filter

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EP2234509A1 (en) 2010-10-06
US20100006112A1 (en) 2010-01-14
EA201070770A1 (ru) 2010-12-30
CO6220886A2 (es) 2010-11-19
EA017412B1 (ru) 2012-12-28
JP2011505851A (ja) 2011-03-03
MY148735A (en) 2013-05-31
AU2008340634B2 (en) 2013-05-16
UA99496C2 (ru) 2012-08-27
BRPI0821407A2 (pt) 2015-06-16
PT2234509E (pt) 2012-08-24
KR20100094476A (ko) 2010-08-26
ES2390740T3 (es) 2012-11-16
NZ584674A (en) 2012-12-21
WO2009080368A1 (en) 2009-07-02
CN101873810A (zh) 2010-10-27
BRPI0821407B1 (pt) 2019-03-12
PL2234509T3 (pl) 2012-11-30
DK2234509T3 (da) 2012-10-08
AU2008340634A1 (en) 2009-07-02
SI2234509T1 (sl) 2012-08-31

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