WO2008074977A1 - Filtre pour article à fumer - Google Patents

Filtre pour article à fumer Download PDF

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Publication number
WO2008074977A1
WO2008074977A1 PCT/GB2007/004435 GB2007004435W WO2008074977A1 WO 2008074977 A1 WO2008074977 A1 WO 2008074977A1 GB 2007004435 W GB2007004435 W GB 2007004435W WO 2008074977 A1 WO2008074977 A1 WO 2008074977A1
Authority
WO
WIPO (PCT)
Prior art keywords
section
filter
particulate material
filter according
wrapper
Prior art date
Application number
PCT/GB2007/004435
Other languages
English (en)
Inventor
Martin Graham Duke
Original Assignee
British American Tobacco (Investments) 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
Priority to KR2020147000039U priority Critical patent/KR20140005731U/ko
Priority to EP07824649A priority patent/EP2096945B1/fr
Priority to CA2669297A priority patent/CA2669297C/fr
Priority to AU2007336120A priority patent/AU2007336120B2/en
Application filed by British American Tobacco (Investments) Limited filed Critical British American Tobacco (Investments) Limited
Priority to JP2009542180A priority patent/JP2010512778A/ja
Priority to CN2007800471953A priority patent/CN101562998B/zh
Priority to ES07824649T priority patent/ES2396458T3/es
Priority to US12/520,532 priority patent/US20100108085A1/en
Priority to MX2009005233A priority patent/MX2009005233A/es
Priority to PL07824649T priority patent/PL2096945T3/pl
Priority to EA200900818A priority patent/EA014830B1/ru
Priority to BRPI0720536-8A priority patent/BRPI0720536A2/pt
Publication of WO2008074977A1 publication Critical patent/WO2008074977A1/fr
Priority to IL198777A priority patent/IL198777A/en
Priority to ZA2009/03580A priority patent/ZA200903580B/en

Links

Classifications

    • A—HUMAN NECESSITIES
    • A24—TOBACCO; CIGARS; CIGARETTES; SIMULATED SMOKING DEVICES; SMOKERS' REQUISITES
    • A24D—CIGARS; CIGARETTES; TOBACCO SMOKE FILTERS; MOUTHPIECES FOR CIGARS OR CIGARETTES; MANUFACTURE OF TOBACCO SMOKE FILTERS OR MOUTHPIECES
    • A24D3/00—Tobacco smoke filters, e.g. filter-tips, filtering inserts; Filters specially adapted for simulated smoking devices; Mouthpieces for cigars or cigarettes
    • A24D3/04—Tobacco smoke filters characterised by their shape or structure
    • A—HUMAN NECESSITIES
    • A24—TOBACCO; CIGARS; CIGARETTES; SIMULATED SMOKING DEVICES; SMOKERS' REQUISITES
    • A24D—CIGARS; CIGARETTES; TOBACCO SMOKE FILTERS; MOUTHPIECES FOR CIGARS OR CIGARETTES; MANUFACTURE OF TOBACCO SMOKE FILTERS OR MOUTHPIECES
    • A24D3/00—Tobacco smoke filters, e.g. filter-tips, filtering inserts; Filters specially adapted for simulated smoking devices; Mouthpieces for cigars or cigarettes
    • A24D3/04—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

  • the present invention relates to a filter for a smoking article and smoking articles incorporating a filter element.
  • Smoking articles, and filters therefore, can vary significantly from one market to another as a result of many different factors including consumer preference and tradition.
  • a filter having a recess at the mouth end which may be used to lengthen the filter as a whole.
  • the recess is achieved by overwrapping the plug of filtration material with a plugwrap that extends beyond the end of the plug of filtration material at the mouth end of the filter.
  • a plugwrap which is thicker than a conventional cigarette plugwrap is used.
  • Such a plugwrap has up to four times the base weight of a conventional plugwrap and thus is significantly more resistant to deformation and adds a high level of rigidity at the mouth end of the filter.
  • the need for such a thick plugwrap means that conventional (more economical) plugwrap s cannot be used on filters having a recessed end and also add significant problems to the process of ventilating the filter, and in particular to the process of online laser perforation of the filter, thus not allowing high levels of ventilation to be attained.
  • the present invention provides a filter for a smoking article comprising a first and a second section, the first section being at a mouth end of the filter and comprising a cylindrical element having a hollow portion extending therethrough and being circumscribed by a wrapper, and the second section being longitudinally aligned with and adjacent to the first section and comprising a filtration material.
  • the second section comprises a particulate material in a circumferential region thereof, the particulate material extending to the end of the second section immediately adjacent the first section.
  • particulate materials such as carbon or activated carbon
  • tobacco smoke filter elements to reduce vapour phase constituents of smoke
  • a known way of including carbon or other additives in filters is to adhere particles of the additive to a wrapper surrounding the filter element.
  • GB 2,260,477 and GB 2,261,152 describe various configurations of additive adhesion.
  • particulate carbon when provided in a mouth end filter section, may be liable to fall out of the end of the filter. This is highly undesirable as it is possible that particulate carbon may become loose and enter the mouth of the consumer.
  • the provision of a first filter section at the mouth end of the filter having a hollow portion extending therethrough helps to prevent the fall out of the particulate material whilst maintaining the appearance of a recessed filter.
  • the particulate material may extend over the full longitudinal length of the second section.
  • the particulate material may also extend over the full width of the wrapper. In this instance the particulate material may cover the entire surface of the wrapper, although a seam may be left uncovered to allow adhesive to be applied and the wrapper to be sealed about the filtration material.
  • the particulate material may extend over only a portion of the longitudinal length of the wrapper.
  • the particulate material may extend over only a portion of the width of the wrapper.
  • the particulate material may extend over two or more portions of the second section.
  • the two or more portions are preferably spaced circumferentially from one another.
  • the two or more portions may comprise three, four, five, six, seven or eight portions.
  • the filtration material of the second section may further comprise a particulate material interspersed in the filtration material.
  • the particulate material of the filtration material may be the same as the particulate material provided at the circumferential region of the second section of the plugwrap. Alternatively, the particulate material of the filtration material may be different from the particulate material provided at the circumferential region of the second section of the plugwrap.
  • the wrapper may further comprise ventilation means.
  • the ventilation means may comprise one or more ventilation holes provided in gaps between the two or more portions.
  • the cylindrical element will generally have a thickness (in the radial direction) sufficient to occlude at least part of the particulate material.
  • the cylindrical element acts as a physical barrier located at the mouth end of the particulate material to prevent the particular material from escaping from the second section of the filter.
  • the thickness of the cylindrical element may be from l-4mm, and is preferably in the range l-3mm.
  • the cylindrical element is circumscribed by a wrapper, which is preferably a plugwrap.
  • This plugwrap may have a base weight of less than 50g/m 2 , less than 45 g/m 2 , less than 40g/m 2 , less than 35 g/m 2 , less than 30 g/m 2 .
  • This plugwrap may have a base weight equivalent to a conventional plugwrap (wrapper), namely approximately 23 to approximately 21 give?.
  • a second aspect of the present invention provides a smoking article comprising a filter according to the invention.
  • the particulate material includes sorbents (e.g. selected from activated carbon, charcoal, silica gel, sepiolite, alumina, ion exchange material etc.), pH modifiers (e.g. alkaline materials such as Na 2 CO 3 , acidic materials), flavourants, other solid additives and mixtures thereof.
  • sorbents e.g. selected from activated carbon, charcoal, silica gel, sepiolite, alumina, ion exchange material etc.
  • pH modifiers e.g. alkaline materials such as Na 2 CO 3 , acidic materials
  • flavourants e.g. selected from activated carbon, charcoal, silica gel, sepiolite, alumina, ion exchange material etc.
  • pH modifiers e.g. alkaline materials such as Na 2 CO 3 , acidic materials
  • flavourants e.g. selected from activated carbon, charcoal, silica gel, sepiolite, alumina, ion exchange material etc.
  • the particulate material is selected from a group of relatively high surface area materials capable of adsorbing smoke constituents without a high degree of specificity.
  • Suitable general adsorbents can be selected from the group consisting of carbon, activated carbon, activated charcoal, activated coconut carbon, activated coal-based carbon or charcoal, zeolite, silica gel, meerschaum, aluminium oxide (activated or not), carbonaceous resin or combinations thereof.
  • a suitable coal-based charcoal is one made from semi-anthracite coal with a density about 50% greater than coconut-based charcoal (available from Calgon Carbon, Pittsburgh, PA, WA).
  • a suitable carbonaceous resin is one derived from the pyrolysis of sulphonated styrene-divinyl benzene, such as Ambersorb 572 or Ambersorb 563 (available from Rohm and Haas).
  • Ambersorb 572 or Ambersorb 563 available from Rohm and Haas.
  • metal oxides or other metal based complexes may optionally be included in or impregnated on the general adsorbent section.
  • the particulate material used herein is carbon, for instance activated carbon, or charcoal or other absorbent material.
  • the activated carbon is activated coconut carbon.
  • Any particulate material used may be a single substance or a mixture, and/or may be in admixture with other material.
  • the particulate material is disposed in two separate regions spaced circumferentially from one another.
  • the particulate material may be disposed in 3, 4, 5, 6, 7 or 8 separate regions each spaced circumferentially from one another. Further, a greater number of regions may be used if required.
  • Each separate region or portion of particulate material may be comprised of particulate material which is the same as or different from the other separate regions. In one embodiment preferably the particulate material in the separate regions is the same.
  • the particulate material may be applied to two or more portions of the longitudinal inner face of the wrapper.
  • the particulate material is disposed around the inner circumference of the wrapper such that the wrapper has an overlapping longitudinal edge which is free of said particulate material and which provides a lapped and stuck seam holding the wrapper around the core.
  • the particulate material may extend continuously over the full longitudinal length of said wrapper.
  • continuously it is meant that the particulate material is applied such that the loading at any one point on the longitudinal length of the wrapper is the same (or substantially the same) as the loading at any other point on the same longitudinal length of the wrapper.
  • continuously it is meant that at no point along the longitudinal length of the wrapper is there a portion of the wrapper without particulate material if the particulate material is present at another point along the same longitudinal length of the wrapper.
  • the particulate material is applied longitudinally to the wrapper (e.g. plugwrap) in a continuous manner.
  • the particulate material is present as a continuous stream (i.e. without breaks or spaces). In other words, the particulate material extends in a continuous manner along the longitudinal axis of the wrapper.
  • the particulate material may extend continuously over the full width of said wrapper.
  • the particulate material may be present as patches.
  • the wrapper of the filter element is preferably a paper wrapper.
  • the wrapper is a conventional plugwrap.
  • the wrapper may be a conventional plugwrap which covers 360° of the core, in which case the plugwrap has a lapped and stuck seam holding the wrapper around the core.
  • the filter element according to the present invention has a filtration material comprising particulate material interspersed with the filtration material and has a plugwrap which covers 360° of the filtration material.
  • the wrapper in particular plugwrap
  • the wrapper preferably does not extend 360° around the filtration material.
  • the wrapper is a split wrapper.
  • a split wrapper is one which extends circumferentially about the filtration material, but extends less than 360° around the circumference of the filtration material.
  • the split wrapper may be held in place by other known means, such as by bonding the wrapper directly to the filtration material for instance.
  • the wrapper for use in the filter element may be porous or non-porous.
  • the wrapper for use in the filter element may be ventilated or unventilated.
  • the filtration material of the second section may comprise (or consist of) conventional fibrous cellulose acetate, polypropylene or polyethylene material or gathered paper material.
  • the filtration material comprises cellulose acetate.
  • the filtration material of the second section is a Dalmatian-type filter material.
  • the particulate material may be interspersed throughout the filtration material.
  • the particulate material may be interspersed in some parts (but not all) of the filtration material.
  • the parts may be evenly or unevenly distributed.
  • the particulate material adhered to the wrapper may be homogenous — in the sense that it is made up of substantially the same component (for some embodiments, preferably all of the same).
  • the particulate material adhered to the wrapper may be heterogeneous — in the sense that it is made up of two or more different components.
  • the particulate material adhered to the wrapper may be in contact with the filtration material.
  • some or all of the particulate material adhered to the wrapper is in contact with the filtration material.
  • preferably substantially all of the particulate material adhered to the wrapper is in contact with the filtration material.
  • the filter is preferably interattached with a smokable filler (e.g. tobacco) rod by way of a tipping wrapper.
  • a smokable filler e.g. tobacco
  • the tipping wrapper is a paper.
  • the filter may comprise additional filter section(s).
  • the additional filter section(s) will be at the tobacco rod end of the filter.
  • one, two, three or more additional filter sections may be provided in the filter.
  • the additional filter section(s) may be any type of filter section known to those skilled in the art.
  • the filter sections are arranged longitudinally of one another with the end of each filter element abutting the next.
  • the wrapper surrounding the second section of the filter is preferably pre-coated with the particulate material.
  • the particulate material may be adhered to the wrapper by hot melt adhesive (e.g. various polyester adhesives), high m.p. polyethylene glycol, or emulsion-type adhesive such as PVA.
  • hot melt adhesive e.g. various polyester adhesives
  • high m.p. polyethylene glycol e.g., polyethylene glycol
  • emulsion-type adhesive such as PVA.
  • the particulate material may be directly or indirectly adhered to the wrapper.
  • An. example of direct adherance is wherein the particulate material is affixed to the wrapper (such as the inner surface thereof) by means of a suitable adhesive.
  • An example of indirect adherance is wherein the particulate material is affixed to an intermediate layer (which may be made of paper or other suitable support matrix - such as a textile material - or combinations thereof) by means of a suitable adhesive and wherein the intermediate layer is affixed to the wrapper (such as the inner surface thereof) by means of a suitable adhesive.
  • the additional filter section(s) of the filter may be comprised of conventional fibrous cellulose acetate, polypropylene or polyethylene material or gathered paper material.
  • the additional filter section(s) may optionally comprise one or more additives, for instance disposed upon or within the material of the filter element may be further flavouring materials, as described above, which are released or eluted from the filter element during use.
  • the cylindrical element of the first section at the mouth end may be made from a variety of materials, for example, cellulose acetate tow, cellulose, paper, cotton, polypropylene web, polypropylene tow, polyester web, polyester tow or combinations thereof. It is preferred that the element comprises cellulose acetate.
  • the pressure drop and/or mechanical filtration efficiency of the filter sections can be selected to achieve the desired smoking mechanics and filtration characteristics as may be required with the specific product design desired.
  • a part of the filter may comprise a catalyst.
  • the catalyst facilitates the conversion of carbon monoxide (CO) to carbon dioxide (CO 2 ) in the vapour phase of the smoke. It is much by preference that the catalyst is highly selective for carbon monoxide.
  • the catalyst may be one of the group consisting of transition metal oxides, silica, alumina, zeolites, impregnated carbon, for example, carbon impregnated with metals.
  • the filter and/or smoking article according to the present invention may comprise ventilation means.
  • the ventilation means may comprise one or more holes in the wrapper engaged around the filtration material of the second section.
  • the holes may advantageously be positioned in regions of the wrapper to which the particulate material is not adhered. Ventilation holes are often formed in filter wrappers by laser piercing. Carbon granules in the region where ventilation is required can cause the laser to produce sparks when the holes are being made. Positioning the ventilation holes in gaps between the portions of particulate material addresses this problem.
  • the ventilation means may comprise perforation holes in the tipping wrapper used t ⁇ interattach the filter and the rod of wrapped smokable filler (e.g. tobacco) material.
  • wrapped smokable filler e.g. tobacco
  • the ventilation means may be provided by the use of a porous tipping wrapper used in conjunction with a perforated plugwrap.
  • the porous tipping wrapper may be porous over its full extent or over only a localised extent, which extent is in registration with the underlying perforated plugwrap.
  • the ventilation means may further be provided at or close to the end of the rod of wrapped smokable filler (e.g. tobacco) material.
  • the ventilation means may be provided in the tipping wrapper or in the cigarette paper wrapper enwrapping the smokable filler (e.g. tobacco) material.
  • the filter may be attached to a wrapped smokable filler material rod (i.e. a wrapped tobacco rod for instance) by conventional tipping overwrap to form a smoking article.
  • the tipping overwrap may be ventilating or non-ventilating overwrap.
  • the length of the smoking material rod is advantageously at least 60 mm and the rod should preferably yield not less than six puffs, and more preferably not less than seven puffs when smoked under standard machine smoking conditions.
  • the rod is preferably of uniform cross-sectional shape and dimensions throughout the length of the rod.
  • the wrapper enwrapping the smoking article may comprise a burn additive, such as sodium and/or potassium citrate, for example.
  • a burn additive such as sodium and/or potassium citrate
  • Other suitable burn additives such as sodium or potassium salts, such as acetate and tartrate; mono-ammonium phosphate, and di-sodium hydrogen phosphate, for example, will be known to the skilled man.
  • the burn additive may be present in the range of 0.5- 2.5% by weight of the wrapper.
  • the wrapper may also have a base weight in the range of 20- 40g/m 2 .
  • the wrapper of the smoking article may alternatively or in addition be a non-paper wrapper, such as the wrappers described in International Patent Applications, Publications Nos. WO 96/07336 and WO 01/41590.
  • Such wrappers assist in the reduction of sidestream smoke components, but still provide a smoking article which has burning and ashing characteristics similar to conventional products, i.e. the wrappers allow the smoking article to burn down and ash in a similar way to conventional products.
  • the smokable filler material may be tobacco-containing material or a tobacco substitute material.
  • the smokable material is a tobacco material.
  • the tobacco material comprises one or more of stem, lamina, tobacco dust and reconstituted tobacco. It is preferred that the tobacco material comprises one or more of the following types: Virginia or flue- cured tobacco, Burley tobacco, Oriental tobacco, reconstituted tobacco. It is much by preference that the smokable material comprises a blend of tobacco material.
  • the smokable material comprises 10-80% Virginia tobacco, 10-60% Burley tobacco, 0-20% Oriental tobacco, 0- 120% reconstituted tobacco and 0-30% expanded tobacco.
  • carbonaceous includes material which has been pyrolysed, which material preferably contains carbon, although some incomplete combustion products may still be present.
  • Ready pyrolysed coconut fibre may, for example, be the carbonaceous material from which carbon is derived.
  • the term 'smoking material' or 'smokable filler material' means any material which can be used in a smoking article. It does not necessarily mean that the material itself will necessarily sustain combustion.
  • the term 'smoking article' means any product that is used in the tobacco industry and includes smokable products or similar products for delivering an aerosol to the consumer.
  • Smoking articles include cigarettes, cigars, cigarillos and similar articles.
  • Figure 1 shows a longitudinal cross-sectional view of a filter having a recess at the mouth end according to the prior art
  • Figure 2 shows a longitudinal cross-sectional view of a filter according to one embodiment of the present invention
  • Figure 3 shows an end view from the mouth end of a filter according to one embodiment of the present invention
  • Figure 4 shows a longitudinal cross-sectional view of a filter according to a further embodiment of the present invention
  • Figure 5 shows a longitudinal cross-sectional view of a filter according to an alternative arrangement of the present invention.
  • FIG 1 shows a known filter 1 attached to a tobacco rod 2 (only a portion of which is shown) to form a cigarette.
  • Filter 1 consists of a plug of cellulose acetate 3 (filtation material) circumscribed by a plugwrap 4.
  • the plugwrap 4 is longer than the plug of cellulose acetate 3 and overhangs the plug of cellulose acetate at the mouth end of the filter 1 to create a recess having a depth typically of approximately 5mm.
  • the length of overhang of the plugwrap 4 is designated in Figure 1 by the reference character x.
  • the filter 1 is attached to the tobacco rod by a tipping wrapper 5 in the conventional manner.
  • the plugwrap 4 is typically a wrapper having a high base weight, for example 100g/m 2 to provide rigidity to the filter 1.
  • FIG 2 shows a filter 1 in accordance with the present invention in which a first section at the mouth end of the filter 1 comprises a tubular plug of cellulose acetate 6 having a hollow central core, designated by reference numeral 7 in Figure 2.
  • the filter 1 also consists of a second section at the tobacco rod end of the filter 1 and adjacent the first section.
  • the second section comprises a plug of cellulose acetate filtration material 3 circumscribed by a plugwrap 4, which plugwrap 4 may also circumscribe the cellulose acetate plug 6 of the first section.
  • the plugs 3, 6 may each be circumscribed by a respective individual plugwrap.
  • the filter 1 is attached to a tobacco rod 2 to form a cigarette by a standard tipping wrapper 5.
  • the plugwrap 4 and/or the tipping wrapper 5 may be ventilated (not shown) at any point over their surface and to a varying amount dependent on the particular product.
  • the plug of cellulose acetate 6 of the first filter section may for instance be 7mm in length and provides rigidity to the mouth end of the filter 1 and allows a conventional plugwrap 4 to be used without reducing strength.
  • Figure 3 shows the filter of Figure 2 in end view from the mouth end thereof.
  • the cylindrical plug of cellulose acetate 6 defines a hollow core 7 longitudinally along the centre of the plug 6.
  • the plug of cellulose acetate filtration material 3 of the second section can be seen at the far end of the hollow core 7.
  • the thickness of the cylindrical plug of cellulose acetate 6 is defined by the outer surface of the plug 9 and by the inner surface of the plug 8. This thickness, designated by reference character z in Figure 3, may vary depending on the desired size of the recess at the mouth end of the filter 1.
  • the cylindrical plug of cellulose acetate 6 is circumscribed by a plugwrap (not shown) and is surrounded by a tipping wrapper (not shown) to join the filter 1 to a tobacco rod in a formed cigarette.
  • the innersurface of the plug of the first filter section may be of any desired shape and thus serve to create a recognizable shape for the hollow core 7.
  • the filter 1 of Figure 4 comprises all of the features of Figure 2, and same reference numerals are used to denote equivalent features, with the addition of a particulate activated carbon 10 adhered to the inner surface of the plugwrap 4 circumscribing the plug of cellulose acetate 3 of the second filter section.
  • the carbon 10 extends the entire longitudinal length of the second section, being for instance 20mm in length.
  • the thickness of the wall of the plug of cellulose acetate of the first filter section is sufficient to cover the carbon at the position of abutment between the first and second filter sections and prevent any carbon 10 becoming loose and escaping into the first filter section or beyond the mouth end of the filter 1.
  • Figure 5 shows a filter 1 which comprises all of the features of Figure 4, with the alteration in the length of the layer of carbon 10.
  • Particulate activated carbon 10 extends over only a portion of the plugwrap 4 which circumscribes the plug of cellulose acetate 3 of the second filter section.
  • the carbon 10 extends from the end of the plug of cellulose acetate 3 nearest the mouth end of the filter 1 to a position part way along the plug 3 towards the tobacco rod 2.

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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)

Abstract

L'invention concerne un filtre pour un article à fumer comprenant des première et seconde sections, la première section étant à l'extrémité de bouche de filtre et comprenant un élément cylindrique circonscrit par une cape et ayant une partie creuse s'étendant à travers celui-ci, et la seconde section étant alignée longitudinalement avec et adjacente à la première section et comprenant un matériau de filtration. La seconde section comprend un matériau particulaire dans une région périphérique et s'étendant jusqu'à l'extrémité de la seconde section immédiatement adjacente à la première section. L'invention concerne également un article à fumer incorporant un filtre selon l'invention.
PCT/GB2007/004435 2006-12-21 2007-11-20 Filtre pour article à fumer WO2008074977A1 (fr)

Priority Applications (14)

Application Number Priority Date Filing Date Title
CN2007800471953A CN101562998B (zh) 2006-12-21 2007-11-20 烟制品过滤嘴
CA2669297A CA2669297C (fr) 2006-12-21 2007-11-20 Filtre pour article a fumer
AU2007336120A AU2007336120B2 (en) 2006-12-21 2007-11-20 Smoking article filter
US12/520,532 US20100108085A1 (en) 2006-12-21 2007-11-20 Smoking Article Filter
JP2009542180A JP2010512778A (ja) 2006-12-21 2007-11-20 喫煙品用フィルター
EP07824649A EP2096945B1 (fr) 2006-12-21 2007-11-20 Filtre pour article à fumer
ES07824649T ES2396458T3 (es) 2006-12-21 2007-11-20 Filtro para artículo de fumar
KR2020147000039U KR20140005731U (ko) 2006-12-21 2007-11-20 흡연 물품 필터
MX2009005233A MX2009005233A (es) 2006-12-21 2007-11-20 Filtro de articulo para fumar.
PL07824649T PL2096945T3 (pl) 2006-12-21 2007-11-20 Filtr do wyrobu do palenia
EA200900818A EA014830B1 (ru) 2006-12-21 2007-11-20 Фильтр курительного изделия
BRPI0720536-8A BRPI0720536A2 (pt) 2006-12-21 2007-11-20 Filtro para um artigo para fumar, e, artigo para fumar
IL198777A IL198777A (en) 2006-12-21 2009-05-14 Filter for smoking item
ZA2009/03580A ZA200903580B (en) 2006-12-21 2009-05-22 Smoking article filter

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
GBGB0625818.0A GB0625818D0 (en) 2006-12-21 2006-12-21 Smoking article filter
GB0625818.0 2006-12-21

Publications (1)

Publication Number Publication Date
WO2008074977A1 true WO2008074977A1 (fr) 2008-06-26

Family

ID=37758981

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/GB2007/004435 WO2008074977A1 (fr) 2006-12-21 2007-11-20 Filtre pour article à fumer

Country Status (21)

Country Link
US (1) US20100108085A1 (fr)
EP (1) EP2096945B1 (fr)
JP (3) JP2010512778A (fr)
KR (2) KR20140005731U (fr)
CN (1) CN101562998B (fr)
AR (1) AR064455A1 (fr)
AU (1) AU2007336120B2 (fr)
BR (1) BRPI0720536A2 (fr)
CA (1) CA2669297C (fr)
CL (1) CL2007003708A1 (fr)
EA (1) EA014830B1 (fr)
ES (1) ES2396458T3 (fr)
GB (1) GB0625818D0 (fr)
IL (1) IL198777A (fr)
MX (1) MX2009005233A (fr)
MY (1) MY149472A (fr)
PL (1) PL2096945T3 (fr)
TW (1) TW200838445A (fr)
UA (1) UA93765C2 (fr)
WO (1) WO2008074977A1 (fr)
ZA (1) ZA200903580B (fr)

Cited By (14)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
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CN101953511A (zh) * 2010-06-02 2011-01-26 成进学 清除卷烟烟气毒害的纳米富硒锗负离子安全防癌香烟
WO2011117584A1 (fr) * 2010-03-24 2011-09-29 Filtrona International Limited Filtre à fumée de tabac
EP2510814A1 (fr) * 2011-04-15 2012-10-17 Philip Morris Products S.A. Article à fumer ventilé incluant un matériau sorbant
WO2014001388A1 (fr) * 2012-06-27 2014-01-03 Essentra Filter Products Development Co. Pte. Ltd Filtre de fumée de tabac
EP2719295A1 (fr) * 2012-10-15 2014-04-16 Philip Morris Products S.A. Article à fumer ventilé incluant un matériau sorbant
WO2014068295A1 (fr) * 2012-10-31 2014-05-08 British American Tobacco (Investments) Limited Filtre pour article à fumer
US9107454B2 (en) 2009-12-21 2015-08-18 British American Tobacco (Investments) Limited Sheet filter materials with additives
GB2549803A (en) * 2016-04-29 2017-11-01 British American Tobacco Investments Ltd A filter tube for a smoking article
WO2019072962A1 (fr) * 2017-10-13 2019-04-18 Philip Morris Products S.A. Article de génération d'aérosol ayant une cavité comprenant un matériau de modification d'aérosol particulaire
EP3698654A1 (fr) 2012-08-06 2020-08-26 Philip Morris Products S.a.s. Article à fumer ayant une cavité d'extrémité buccale
US11076636B2 (en) 2012-12-21 2021-08-03 Nicoventures Trading Limited Insertable filter unit
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DK177983B1 (da) * 2010-11-08 2015-02-16 Pleasure Smoking Co Aps Koniske og cylindriske filter tips, og koniske og cylindriske hylstre
GB201110863D0 (en) 2011-06-27 2011-08-10 British American Tobacco Co Smoking article filter and insertable filter unit thereof
EP2551407B1 (fr) 2011-07-28 2013-06-19 delfortgroup AG Papier d'enveloppe de filtre comprenant de l'huile
PL2879528T3 (pl) * 2012-08-06 2018-10-31 Philip Morris Products S.A. Sposób tworzenia wyrobów do palenia z wnękami końca doustnego
WO2014102095A2 (fr) * 2012-12-31 2014-07-03 Philip Morris Products S.A. Article à fumer comprenant un réducteur de débit dans un tube creux
KR102216914B1 (ko) * 2012-12-31 2021-02-19 필립모리스 프로덕츠 에스.에이. 흐름 제한기를 포함하는 흡연 물품
TW201635927A (zh) 2015-03-27 2016-10-16 菲利浦莫里斯製品股份有限公司 具有嘴端空腔及通氣的吸煙物件
ITUA20162010A1 (it) * 2016-03-24 2017-09-24 Gd Spa Articolo da fumo e metodo per la sua realizzazione.
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GB201715922D0 (en) * 2017-09-29 2017-11-15 British American Tobacco Investments Ltd A filter unit for a smoking article
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Cited By (22)

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WO2011000638A1 (fr) * 2009-06-29 2011-01-06 British American Tobacco (Investments) Limited Filtre pour article à fumer
WO2011000639A1 (fr) * 2009-06-29 2011-01-06 British American Tobacco (Investments) Limited Filtre pour un article à fumer
US9107454B2 (en) 2009-12-21 2015-08-18 British American Tobacco (Investments) Limited Sheet filter materials with additives
WO2011117584A1 (fr) * 2010-03-24 2011-09-29 Filtrona International Limited Filtre à fumée de tabac
CN101953511A (zh) * 2010-06-02 2011-01-26 成进学 清除卷烟烟气毒害的纳米富硒锗负离子安全防癌香烟
AU2016202775B2 (en) * 2011-04-15 2017-12-14 Philip Morris Products S.A. Ventilated smoking article including sorbent material
EP2510814A1 (fr) * 2011-04-15 2012-10-17 Philip Morris Products S.A. Article à fumer ventilé incluant un matériau sorbant
WO2012140217A1 (fr) * 2011-04-15 2012-10-18 Philip Morris Products S.A. Article à fumer ventilé comprenant une matière sorbante
WO2014001388A1 (fr) * 2012-06-27 2014-01-03 Essentra Filter Products Development Co. Pte. Ltd Filtre de fumée de tabac
RU2629869C2 (ru) * 2012-06-27 2017-09-04 Эссентра Филтер Продактс Девелопмент Ко. Пти. Лтд Фильтр табачного дыма
EP3698654A1 (fr) 2012-08-06 2020-08-26 Philip Morris Products S.a.s. Article à fumer ayant une cavité d'extrémité buccale
EP2719295A1 (fr) * 2012-10-15 2014-04-16 Philip Morris Products S.A. Article à fumer ventilé incluant un matériau sorbant
AU2013340588B2 (en) * 2012-10-31 2016-01-28 British American Tobacco (Investments) Limited A filter for a smoking article
EP2914137B1 (fr) 2012-10-31 2018-12-05 British American Tobacco (Investments) Ltd Filtre pour un article à fumer
WO2014068295A1 (fr) * 2012-10-31 2014-05-08 British American Tobacco (Investments) Limited Filtre pour article à fumer
US11076636B2 (en) 2012-12-21 2021-08-03 Nicoventures Trading Limited Insertable filter unit
US11419362B2 (en) 2012-12-21 2022-08-23 Nicoventures Trading Limited Insertable filter unit
GB2549803A (en) * 2016-04-29 2017-11-01 British American Tobacco Investments Ltd A filter tube for a smoking article
US11690398B2 (en) 2017-09-29 2023-07-04 British American Tobacco (Investments) Limited Filter unit for a smoking article
WO2019072962A1 (fr) * 2017-10-13 2019-04-18 Philip Morris Products S.A. Article de génération d'aérosol ayant une cavité comprenant un matériau de modification d'aérosol particulaire
CN111148440A (zh) * 2017-10-13 2020-05-12 菲利普莫里斯生产公司 具有带颗粒气溶胶改变材料的腔的气溶胶生成制品
US11324252B2 (en) 2017-10-13 2022-05-10 Philip Morris Products S.A. Aerosol generating article having cavity with particulate aerosol altering material

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JP3194389U (ja) 2014-11-20
IL198777A0 (en) 2010-02-17
BRPI0720536A2 (pt) 2014-01-07
KR20090101917A (ko) 2009-09-29
AU2007336120A1 (en) 2008-06-26
ES2396458T3 (es) 2013-02-21
EA200900818A1 (ru) 2010-02-26
AR064455A1 (es) 2009-04-01
GB0625818D0 (en) 2007-02-07
EA014830B1 (ru) 2011-02-28
KR20140005731U (ko) 2014-11-07
EP2096945B1 (fr) 2012-10-03
CN101562998A (zh) 2009-10-21
ZA200903580B (en) 2010-02-24
PL2096945T3 (pl) 2013-05-31
CL2007003708A1 (es) 2008-06-27
UA93765C2 (uk) 2011-03-10
EP2096945A1 (fr) 2009-09-09
CN101562998B (zh) 2011-10-05
JP2013188215A (ja) 2013-09-26
JP2010512778A (ja) 2010-04-30
AU2007336120B2 (en) 2010-11-25
MX2009005233A (es) 2009-05-28
MY149472A (en) 2013-08-30
CA2669297C (fr) 2015-01-13
IL198777A (en) 2013-05-30
TW200838445A (en) 2008-10-01
CA2669297A1 (fr) 2008-06-26
US20100108085A1 (en) 2010-05-06

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