WO2011141735A1 - Filter additive - Google Patents

Filter additive Download PDF

Info

Publication number
WO2011141735A1
WO2011141735A1 PCT/GB2011/050899 GB2011050899W WO2011141735A1 WO 2011141735 A1 WO2011141735 A1 WO 2011141735A1 GB 2011050899 W GB2011050899 W GB 2011050899W WO 2011141735 A1 WO2011141735 A1 WO 2011141735A1
Authority
WO
WIPO (PCT)
Prior art keywords
filter
additive
filter element
filter material
smoking article
Prior art date
Application number
PCT/GB2011/050899
Other languages
English (en)
French (fr)
Inventor
John Sampson
David Rushforth
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 RU2012153392/12A priority Critical patent/RU2565566C2/ru
Priority to NZ603222A priority patent/NZ603222A/en
Application filed by British American Tobacco (Investments) Limited filed Critical British American Tobacco (Investments) Limited
Priority to KR1020127032402A priority patent/KR20130028937A/ko
Priority to EP11724440.0A priority patent/EP2568833B1/en
Priority to JP2013509623A priority patent/JP5872547B2/ja
Priority to AU2011251791A priority patent/AU2011251791B2/en
Priority to CN201180023581.5A priority patent/CN102883629B/zh
Priority to US13/696,296 priority patent/US20130137561A1/en
Priority to CA2798042A priority patent/CA2798042C/en
Priority to BR112012028950A priority patent/BR112012028950B1/pt
Priority to KR1020157035004A priority patent/KR20150144820A/ko
Priority to UAA201213920A priority patent/UA106913C2/uk
Priority to MX2012012474A priority patent/MX2012012474A/es
Publication of WO2011141735A1 publication Critical patent/WO2011141735A1/en
Priority to ZA2012/08308A priority patent/ZA201208308B/en
Priority to HK13103542.2A priority patent/HK1176525A1/xx

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
    • 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
    • A24D3/02—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
    • A—HUMAN NECESSITIES
    • A24—TOBACCO; CIGARS; CIGARETTES; SIMULATED SMOKING DEVICES; SMOKERS' REQUISITES
    • A24D—CIGARS; CIGARETTES; TOBACCO SMOKE FILTERS; MOUTHPIECES FOR CIGARS OR CIGARETTES; MANUFACTURE OF TOBACCO SMOKE FILTERS OR MOUTHPIECES
    • A24D3/00—Tobacco smoke filters, e.g. filter-tips, filtering inserts; Filters specially adapted for simulated smoking devices; Mouthpieces for cigars or cigarettes
    • A24D3/06—Use of materials for tobacco smoke filters
    • A24D3/14—Use of materials for tobacco smoke filters of organic materials as additive

Definitions

  • the invention relates to methods for making filter elements and filters for smoking articles, the filter elements and filters comprising an additive material.
  • the invention relates to methods of incorporating an additive which is solid at room temperature into filter material, the method comprising the step of melting the additive material.
  • filter materials for tobacco smoke.
  • the most commonly used filter material is cellulose acetate tow.
  • cellulose acetate has an excellent capacity to filter tobacco smoke, it has the drawback that it is slower to degrade than other materials and can therefore be disadvantageous environmentally.
  • Filter materials made from non-woven sheet material and paper are known.
  • Suitable sheet materials include polyvinyl alcohol, reconstituted tobacco, starch, and polylactic acid. These materials are much more readily degradable than cellulose acetate tow, however, they have drawbacks.
  • the filter material in order to attain the desired structural rigidity when constructing a filter element from non-woven sheet materials and paper, the filter material is generally densely packed and this means that these filter elements have quite different properties to those made of cellulose acetate. They exhibit a greater resistance to the flow of smoke, resulting in a pressure drop which is higher than that of a conventional cellulose acetate (CA) filter, requiring the user to draw harder on the smoking article.
  • CA cellulose acetate
  • the smoke drawn through such filter material has been found to have different taste characteristics compared to the smoke drawn through conventional cellulose acetate filter material.
  • filter elements comprising non- woven sheet materials or paper as the filter material have been shown to exhibit significantly less selective removal of semi-volatile compounds than conventional cellulose acetate tow filter materials.
  • additives such as triacetin (glycerin triacetate), TEC (triethyl citrate) and PEG 400 (low molecular weight polyethylene glycol) in cellulose acetate filters.
  • These additives function as plasticizers and they are generally used in cellulose acetate filters to give the filter rods sufficient hardness for cigarette manufacture and use.
  • Some plasticizers have the additional advantage of providing cellulose acetate tow with an improved capacity to selectively remove semi-volatile compounds such as phenol, o-cresol, p-cresol and m-cresol from tobacco smoke.
  • plasticizers are in liquid form at room temperature and they are sprayed on to cellulose acetate tow.
  • the plasticizer coats the individual fibres within the tow and, with time, they bind or fuse adjacent fibres together at their points of contact, thereby increasing the hardness or rigidity of the filter material, to give the core of the filter the desired structural strength.
  • the mode of action of the plasticizers does, however, mean that there is an upper limit to the amount that may be incorporated into cellulose acetate tow filter material. When above about 7% of plasticizer by weight of the filter is included, the plasticizer starts to have a detrimental effect on the cellulose acetate tow, forming holes which compromises its filtration properties.
  • plasticizers such as triacetin, TEC or PEG 400 in CA filters are relatively common, their inclusion in non-woven sheet and paper filter materials is less attractive.
  • the plasticizers are used in CA filters to bind fibres and the plasticizer would clearly not have this advantageous effect when added to non- woven sheet material or paper (in which the fibres are already bound within the sheet structure).
  • these commonly used plasticizers are liquids and their application to non-woven sheet and paper filter materials will be limited as they will cause these materials to become soggy and to lose their structural integrity.
  • Paper the most commonly used sheet filter material, may start to disintegrate when moist, and will therefore have a reduced acceptability to the user.
  • many sheet materials, including polyvinyl alcohol and polylactic acid are soluble and therefore the addition of aqueous additives may result in the partial dissolution of the material.
  • the method will also result in a filter element which exhibits an improved capacity to selectively remove semi-volatile compounds and which provides smoke having similar taste characteristics to that provided by conventional cellulose acetate filters.
  • a method for making a smoking article filter element comprises the steps of:
  • step i) is preferably carried out before step iii).
  • a filter element for a smoking article comprises filter material and an additive which is solid at room temperature, the filter element being obtained or obtainable by the method according to the first aspect of the present invention.
  • a filter for a smoking article comprising a filter element according to the second aspect.
  • a smoking article comprising a filter element according to the second aspect and/ or a filter according to the third aspect, attached to a rod of smokeable filler material.
  • the smokeable filler material may comprise tobacco and the smoking article may be a cigarette.
  • smoking article includes smokeable products such as cigarettes, cigars and cigarillos whether based on tobacco, tobacco derivatives, expanded tobacco, reconstituted tobacco or tobacco substitutes and also heat-not- burn products.
  • the present invention relates to a method of producing a filter element for inclusion in a smoking article, the method comprising applying an additive to filter material, the additive being solid at room temperature and the method involving heating the additive so that it melts.
  • the additive is applied to the filter material in solid form, for example in the form of a powder, prior to formation of the filter rod.
  • the formed filter rod may then be heated to melt the additive whilst it remains in contact with the filter material.
  • the additive material subsequently cools and re-solidifies, it provides the filter material and the filter element formed with one or more of: stability and rigidity; improved smoke taste characteristics; and improved selective removal of semi-volatile compounds.
  • the additive is melted and applied to the filter material in molten or liquid form, prior to formation of the filter rod.
  • the additive material subsequently cools and re-solidifies, it provides the filter material and the filter element formed with one or more of: stability and rigidity; improved smoke taste characteristics; and improved selective removal of semi- volatile compounds.
  • the methods according to the present invention may be used to add an additive to any type of filter material, including fibrous filter material or tows, such as conventional cellulose acetate tow which is currently widely used in smoking article filters.
  • the method is considered to be particularly effective when it is used to add an additive to alternative filter materials, such as those constructed from a sheet material, for example non-woven sheet materials or paper.
  • Paper filter material usually comprises gathered, pleated, crimped, crepe or even shredded paper. Paper filter materials tend to have a low air permeability, exhibit a basic H, and can be gathered or formed easily to form the filter element.
  • a preferred filter material for filter elements of the present invention is a gathered or pleated paper. Examples of suitable papers are PuracelTM and MyriaTM papers (Filtrona pic, United Kingdom).
  • Non-woven sheet materials may be used as filter materials.
  • Non-woven materials are broadly defined as sheet or web structures bonded together by entangling fibres or filaments mechanically, thermally or chemically, or by a combination of two or more of these. They tend to be flat, porous sheets that are made directly from separate fibers. They are not made by weaving or knitting and do not require converting the fibers to yarn.
  • the non-woven sheet materials used in the present invention are preferably ones which are readily biodegradable.
  • materials include polyvinyl alcohol (PVOH), polylactic acid or polylactide (PLA), poly(e-caprolactone) (PCL), poly(l-4 butanediol succunate) (PBS) and poly(butylene adipate-co-terephthalate) (PBAT).
  • PVOH polyvinyl alcohol
  • PLA polylactic acid or polylactide
  • PCL poly(e-caprolactone)
  • PBS poly(l-4 butanediol succunate)
  • PBAT poly(butylene adipate-co-terephthalate)
  • Other suitable filter materials include starch fibres and calcium alginate.
  • Non-woven sheet materials and paper are more readily biodegradable than cellulose acetate tow.
  • the filter material In order to attain the desired structural rigidity when constructing a filter element from non-woven sheet materials and paper, the filter material must be very densely packed and this means that these filter elements have quite different properties to those made of cellulose acetate. They exhibit a greater resistance to the flow of smoke, resulting in a pressure drop which is higher than that of a conventional cellulose acetate filter, requiring the user to draw harder on the smoking article.
  • the sheet material used in the method of the invention may comprise paper, polyvinyl alcohol, reconstituted tobacco, starch, or polylactic acid.
  • the sheet filter material is paper.
  • Preferred non-woven sheet materials have a thickness greater than about 0.05 mm, preferably from about 0.06 mm to about 0.08 mm.
  • the paper filter materials may comprise paper having a basis weight of about 15g/m 2 to about 40g/m 2 , preferably about 20g/m 2 to about 35g/m 2 .
  • the sheet material used in the method of the invention may additionally or alternatively comprise polyvinyl alcohol (PVOH).
  • PVOH polyvinyl alcohol
  • PVOH is unique in being the only biodegradable, carbon-carbon backbone polymer that can completely biodegrade to small molecules, e.g., carbon dioxide and water.
  • the method may comprise the use of the sheet material polylactic acid.
  • the lactate from which PLA is produced can be derived from the fermentation of agricultural by-products.
  • an additive which is solid at room temperature may provide firmness and rigidity to the filter without damaging the filter material by making it soggy.
  • the method of the present invention uses a solid additive which has been melted, but which re-solidifies at room temperature and bonds parts of the filter material together. Therefore, the additive has the benefit that it can actually increase the structural integrity and rigidity of the filter material.
  • addition of a solid additive by a method according to the present invention may make it possible to use less of the filter material in the filter element. This provides further flexibility when forming the filter element with regard to the amount of filter material required to achieve the desired hardness and rigidity. This in turn would allow the manufacturer to adjust the pressure drop of the filter element. This would allow a filter element according to the present invention to be designed having properties which closely resemble those of conventional CA filter elements.
  • the addition of a solid additive to the filter material by the methods according to the present invention can eliminate the shortcomings that are currently associated with the use of sheet filter materials, by improving the rigidity of the filter, improving the taste of the smoke, and increasing the selective removal of semi- volatile compounds. Furthermore, the combination of filter material and solid additive may provide vastly improved disintegration, dispersion and/ or
  • the methods of the invention allow the properties of non-woven sheet and paper filter materials to be fine-tuned, so that the performance of the filter element can more closely resemble that of a cellulose acetate filter element.
  • These additives also give the use of sheet filter material much greater flexibility, widening the range of its applicability whilst retaining the beneficial biodegradable properties.
  • the additive comprises a high molecular weight polyethylene glycol which is solid at room temperature.
  • Suitable PEGs include PEG 600 and higher, and preferably PEG 1000 and higher.
  • High molecular weight polyethylene glycol has the additional advantage of providing selective removal of semi-volatile compounds.
  • This selective removal of semi- volatile compounds provided by the addition of the PEG to the filter element is proportional to the amount of PEG included.
  • the methods of the present invention which involve the use a PEG which is solid at room temperature (in contrast to the PEG previously used in filters) provide flexibility which allows the addition of greater amounts of PEG than would be possible if using a liquid PEG. This means that the ability of the filter element to selectively remove semi-volatile compounds may easily be adjusted to a desirable level. This is in contrast to the situation where low molecular weight PEG is added to cellulose acetate filters as a plasticizer.
  • Cellulose acetate filters are generally disclosed as including less than 10% plasticizer because including higher levels of plasticizer than this has a detrimental effect on the cellulose acetate tow, causing holes to be formed.
  • PEG may be included in the filter material of the filter element in an amount of up to about 30%, preferably up to about 20%, and more preferably about 5-10% by weight of the filter element.
  • PEG poly(ethylene glycol)
  • its inclusion in the filter elements should not adversely affect the biodegradation of the product. Indeed, it has been surprisingly found that the addition of PEG to a filter element comprising a non-woven sheet material or paper as the filter material actually enhances biodegradation.
  • MPEGs high molecular weight methoxypolyethylene glycols
  • MPEG 750 1000, 2000, 3000 and 5000
  • waxes which are solid at room temperature, including beeswax, carnauba, shellac, castor wax, paraffin and various synthetic waxes.
  • the method can further comprise the incorporation into the sheet filter material of further additives such as tobacco extracts, glycerine, menthol, carbon fibres, carbon particles, and the like.
  • further additives such as tobacco extracts, glycerine, menthol, carbon fibres, carbon particles, and the like.
  • a further advantage of the method of the invention is that filter elements to which additive has been applied using the claimed method are more stable to the subsequent addition of additives, including liquid additives.
  • additives including liquid additives, which would otherwise have been difficult to apply to sheet material without making it soggy, can be added to the filter rod to adjust the properties of the filter as required, or provide further qualities to the filter element, such as flavourants for enhanced flavour.
  • Methods according to the present invention encompass different ways of applying the additive to the filter material.
  • the method involves applying the additive to the filter material in liquid form.
  • the additive In order to do this, the additive must be heated and is sprayed or otherwise applied to the filter material before the filter material is formed into the filter rod or core of the filter element.
  • This embodiment is attractive because it necessitates relatively little modification of conventional filter-making machinery.
  • the only real change is the provision of means for heating the additive so that it is in molten form and may be applied to the filter material in that form.
  • the application of the heat is relatively easy to control and monitor.
  • the application of heat is primarily just to the additive and so other components of the filter element do not need to be exposed to localised heat.
  • This method is applicable to both fibrous tow filter materials as well as to non- woven sheet materials and paper. Although such sheet materials are being fed under some tension, the application of the liquid additive does not weaken the sheet structure sufficiently to cause a problem.
  • the method involves applying the additive to the filter material in solid form, for example in the form of a powder, before the filter material is formed into the filter rod or core of the filter element. Once formed, the filter rod is heated to melt the additive. The additive melts and subsequently resolidifies, bonding the filter material without making it soggy.
  • This method allows the additive to be applied to the filter material in a controlled and uniform manner, and with minimal wastage of additive material. It also avoids any potential disadvantages associated with applying a liquid to the filter material. For example, in the case of sheet filter materials, this embodiment avoids the potential weakening of the sheet structure by applying a liquid.
  • steps will need to be taken to ensure that the solid additive remains in contact with the sheet filter material whilst the sheet is being fashioned into a filter rod. This may require the application of some adhesive or special orientation of the sheet material.
  • Filter elements comprising sheet materials are generally manufactured using a process which comprises the steps of crimping the sheet material and then gathering the sheet material to form a cylindrical filter rod.
  • the additive may be added prior to or during the crimping process, or may be added to the sheet material after it has been crimped. The additive may even be added to the crimped material as it is gathered to form the filter rod, with the effect that it is immediately contained within the rod and does not need to be adhered.
  • the additive may be adhered to the filter material using any suitable adhesive, for example, using liquid starch adhesives, or EVA and PVA adhesives.
  • the solid additive may be applied to sheet filter material as a powder or in larger pieces, such as in the form of flakes or pellets.
  • the additive may be applied to the filter material by any suitable method that is known to the skilled person.
  • powdered additive may be sprayed on to the filter material, or it may be applied by an applicator which may or may not be in direct physical contact with the filter material.
  • the additive may be loosely applied to the filter material, for example by being sprayed or sprinkled, or may be applied using a degree of force, such as by being pressed or smeared on to the filter material.
  • the filter material is formed with the solid additive embedded in or on it. Applying the additive which is solid at room temperature to the filter material in this way can simplify the methods of the present invention. Once the filter material has been formed into the filter rod, the rod may be heated to melt the additive, and then allowed to re-solidify.
  • the additive may be applied to the sheet material during its manufacture or as part of a post-manufacture processing step. In this way, the additive may be incorporated within the sheet, or as a coating on one or both sides of the sheet material.
  • the additive may be uniformly present within or on the surface of the sheet, or may be present in discreet areas, such as in patches or strips on the sheet material.
  • Fibrous filter material may also be prepared with particles of solid additive material dispersed throughout the fibres. Such particles may need to be adhered to the fibres. Alternatively, they may become trapped between adjacent fibres if the fibrous material is dense enough.
  • the heating step of the method of the invention involves applying sufficient heat to the additive to ensure that the additive is molten to the extent that it has a viscosity suitable for the mode of application chosen.
  • the molten or liquid additive may be sprayed or printed, or the filter material may be submerged in the liquid additive.
  • a system for applying molten or liquid additive to filter material comprises a heated chamber in which the additive is maintained in liquid form, a pump, and a hose with one or more nozzles configured to spray droplets onto the filter material prior to formation of the filter.
  • a number of application systems are known which are suitable for applying molten or liquid additive to filter material. Such systems are available, for example, from SPI Developments, C. B. Kaymich & Co. Ltd, or Kohl Maschinenbau GmbH.
  • the additive is to be melted after the filter material has been formed into a rod or core, sufficient heat needs to be applied to ensure that all of the additive, which is dispersed throughout the rod, is melted.
  • the application of heat to the formed filter rod must be carried out with care, as it may have a detrimental effect on other components of the filter rod, including the filter material and any wrapper (which is likely to be paper and could be singed or scorched by exposure to high temperatures).
  • the temperature that the filter rod must be heated to, and the duration of heating, is dependent upon the melting point of the additive.
  • a preferred additive, PEG 1000 has a melting point of around 37°C, and therefore in this case, the filter rod is heated to a temperature exceeding 37°C.
  • the filter rod may be heated to a temperature exceeding 40°C, preferably exceeding 45°C, and most preferably exceeding 50°C.
  • the heat needs to be applied for a period sufficient to ensure that the whole rod is heated and not just the outer areas. Heat may be applied using any suitable means.
  • the filter rod or filter element may be brought into close proximity with a heating element.
  • the filter rod or filter element may be heated by means of a current of hot gas, such as hot air or steam, or via the application of radiation, such as microwave radiation.
  • Heat may be applied to the filter rod as soon as it is formed. In other words, heating of the filter rod may occur at some stage between formation of the filter rod at the garniture and the cut-off, where the filter rod is separated into sections.
  • Heating of the rod will generally be for a very brief period, such as less than 1 second, due to the linear motion of the rod through the machine.
  • concomitant forming and heating of the filter rod may require expensive modification of the current apparatus.
  • the filter rod is preferably heated at a later stage, and this may be achieved using a heater which is essentially separate from the apparatus involved in forming the filter rod.
  • the heating is preferably carried out in a separate
  • the method of the invention may further comprise wrapping the filter rod in a suitable wrapper such as a plugwrap. In this case the heat may be applied before the filter rod is wrapped. Alternatively, the filter rod may be wrapped and then heated.
  • the assembled filter is heated to melt the additive, although this approach can be complicated by the insulating properties of the filter material.
  • the speed of filter manufacture means that the time available for heating the filter is limited. Having said that, heating of the assembled filter may be achieved in various ways.
  • the filter rod may be exposed to heat by conductance, such as on a heated drum in the presence of hot air.
  • trays of filter rods (such as 4,000 filters per tray) may be passed through a heated tunnel or similar arrangement, in the presence of hot air.
  • the filter trays may alternatively be heated by the application of radiation such as microwave radiation.
  • the methods of the present invention may further comprise a step of incorporating particulate material into the filter element.
  • Suitable 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 C0 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 C0 3 , acidic materials
  • flavourants e.g., other solid additives and mixtures thereof.
  • the particulate material may be 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.
  • particulate material which may be used in the method of the invention is carbon, for instance activated carbon, or charcoal or other carbonaceous absorbent material.
  • activated carbon is activated coconut carbon.
  • the particulate material may be incorporated into the filter element in such a way that it is interspersed throughout the filter element, or it may be interspersed in some parts (but not all) of the filter element.
  • the particulate material may be interspersed over the full longitudinal length of the core.
  • the particulate material may be interspersed from one end of the core to a section that is short of the other end.
  • the particulate material may be present in discrete areas that need not extend from - or be present at - any end of the core. Different areas may have different loadings of particulate material and/ or different types of particulate material.
  • the methods of the present invention may further comprise wrapping the filter element in a suitable wrapper.
  • the wrapper of the filter element is preferably a paper wrapper, and most preferably comprises conventional plugwrap, such as plugwrap having a basis weight of between about 20g/m 2 and about 35g/m 2 , preferably about 27g/m 2 .
  • the plugwrap may be porous or non-porous.
  • the method may comprise the use of a wrapper which includes a particulate material adhered to one or more portions of its surface.
  • the particulate material is adhered to two or more portions of the wrapper, the portions being circumferentially spaced from one another, with at least one of the portions extending over the full longitudinal length of the wrapper.
  • the smoking article filter element produced according to the method of the present invention may be incorporated into a smoking article filter.
  • the smoking article filter may comprise a single filter element of the method of the invention.
  • the smoking article filter may include two or more filter elements produced according to the method of the invention.
  • the filter element may be part of a composite (or multi-component) filter.
  • the filter elements of the composite filter are arranged longitudinally of one another with the end of each filter element abutting the next.
  • the composite filter may have 2, 3, 4 or more distinct or discrete sections.
  • the filter is a triple- filter with three sections.
  • the filter is a dual-filter with two sections.
  • the filter sections of the composite filter may be identical, or alternatively, one or more of the sections may have a composition which is different to that of the other section or sections.
  • one or more of the sections may optionally comprise: (i) cellulose acetate filter material; (ii) a biodegradable filter material, such as crepe, crimped or gathered paper material; (iii) one or more additives, such as adsorbent or flavouring materials, which may be encapsulated; and/or, (iv) a cavity, which may comprise granular material such as adsorbent material.
  • the smoking article filter element produced according to the method of the present invention may be incorporated into a smoking article.
  • the filter element may be in the form of a smoking article filter as described above.
  • the filter element and/ or filter comprising the filter element may be attached to a wrapped smokeable filler material rod (i.e. a wrapped tobacco rod, for instance) by conventional tipping overwrap to form the smoking article, which may be a cigarette.
  • the smokeable filler material may be tobacco material or a tobacco substitute material.
  • the smokeable material is a tobacco material.
  • the tobacco material comprises one or more of stem, lamina, and tobacco dust. 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 smokeable material comprises a blend of tobacco material.
  • the smokeable filler material may also comprise one or more of the following: burn additive, ash improver, inorganic filler material, organic filler, aerosol generating means, binder, flavouring and/or colouring agents.
  • the tipping overwrap may be ventilating or non-ventilating overwrap.

Landscapes

  • Chemical & Material Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Materials Engineering (AREA)
  • Cigarettes, Filters, And Manufacturing Of Filters (AREA)
  • Filtering Materials (AREA)
PCT/GB2011/050899 2010-05-12 2011-05-11 Filter additive WO2011141735A1 (en)

Priority Applications (15)

Application Number Priority Date Filing Date Title
CA2798042A CA2798042C (en) 2010-05-12 2011-05-11 Filter additive
US13/696,296 US20130137561A1 (en) 2010-05-12 2011-05-11 Filter Additive
KR1020127032402A KR20130028937A (ko) 2010-05-12 2011-05-11 필터 첨가제
NZ603222A NZ603222A (en) 2010-05-12 2011-05-11 Filter additive
JP2013509623A JP5872547B2 (ja) 2010-05-12 2011-05-11 フィルター用添加剤
AU2011251791A AU2011251791B2 (en) 2010-05-12 2011-05-11 Filter additive
BR112012028950A BR112012028950B1 (pt) 2010-05-12 2011-05-11 método para produção de um elemento de filtro para artigo de fumar
RU2012153392/12A RU2565566C2 (ru) 2010-05-12 2011-05-11 Добавка для фильтра
EP11724440.0A EP2568833B1 (en) 2010-05-12 2011-05-11 Filter additive
CN201180023581.5A CN102883629B (zh) 2010-05-12 2011-05-11 过滤嘴添加剂
KR1020157035004A KR20150144820A (ko) 2010-05-12 2011-05-11 필터 첨가제
UAA201213920A UA106913C2 (uk) 2010-05-12 2011-05-11 Спосіб виготовлення фільтрувального елемента курильного виробу, фільтрувальний елемент для курильного виробу та курильний виріб
MX2012012474A MX2012012474A (es) 2010-05-12 2011-05-11 Aditivo para filtro.
ZA2012/08308A ZA201208308B (en) 2010-05-12 2012-11-05 Filter additive
HK13103542.2A HK1176525A1 (en) 2010-05-12 2013-03-21 Filter additive

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
GB1007946.5 2010-05-12
GBGB1007946.5A GB201007946D0 (en) 2010-05-12 2010-05-12 Filter additive

Publications (1)

Publication Number Publication Date
WO2011141735A1 true WO2011141735A1 (en) 2011-11-17

Family

ID=42334676

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/GB2011/050899 WO2011141735A1 (en) 2010-05-12 2011-05-11 Filter additive

Country Status (18)

Country Link
US (1) US20130137561A1 (ja)
EP (1) EP2568833B1 (ja)
JP (1) JP5872547B2 (ja)
KR (2) KR20130028937A (ja)
CN (1) CN102883629B (ja)
AR (1) AR084386A1 (ja)
AU (1) AU2011251791B2 (ja)
BR (1) BR112012028950B1 (ja)
CA (1) CA2798042C (ja)
CL (1) CL2012003121A1 (ja)
GB (1) GB201007946D0 (ja)
HK (1) HK1176525A1 (ja)
MX (1) MX2012012474A (ja)
NZ (1) NZ603222A (ja)
RU (1) RU2565566C2 (ja)
UA (1) UA106913C2 (ja)
WO (1) WO2011141735A1 (ja)
ZA (1) ZA201208308B (ja)

Cited By (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2014207704A3 (en) * 2013-06-26 2015-07-16 Pan Jiayi Filter media
RU2641502C2 (ru) * 2012-10-22 2018-01-17 Филип Моррис Продактс С.А. Сегмент фильтра, содержащий ацетатную соль и глицерин
CN108030151A (zh) * 2012-02-13 2018-05-15 菲利普莫里斯生产公司 具有气溶胶冷却元件的气溶胶生成物品
WO2020089093A1 (en) * 2018-10-29 2020-05-07 Nerudia Limited Heat-not-burn consumable
US11039642B2 (en) 2011-12-30 2021-06-22 Philip Morris Products S.A. Smoking article with front-plug and aerosol-forming substrate and method
US11272731B2 (en) 2011-12-30 2022-03-15 Philip Morris Products S.A. Aerosol-generating article for use with an aerosol-generating device
US11278052B2 (en) 2012-06-21 2022-03-22 Philip Morris Products S.A. Smoking article for use with an internal heating element
EP3949772A4 (en) * 2019-03-29 2022-11-16 Japan Tobacco Inc. COOLING SEGMENT, NON-COMBUSTION HEATING TYPE AROMA INHALATION ARTICLE, METHOD OF USING A NON-COMBUSTION HEATING TYPE AROMA INHALATION ARTICLE, AND HEATING WITHOUT COMBUSTION
US11571017B2 (en) 2012-05-31 2023-02-07 Philip Morris Products S.A. Flavoured rods for use in aerosol-generating articles
US11582998B2 (en) 2011-12-30 2023-02-21 Philip Morris Products S.A. Smoking article with front-plug and method

Families Citing this family (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
PL3086938T3 (pl) * 2013-12-23 2020-08-10 Philip Morris Products S.A. Sposób i urządzenie do obróbki ciągłego materiału arkuszowego
GB201400990D0 (en) * 2014-01-21 2014-03-05 British American Tobacco Co Filter materials and filters made therefrom
CN107224007A (zh) * 2017-07-24 2017-10-03 云南中烟工业有限责任公司 一种卷烟滤嘴
CN107927904A (zh) * 2017-10-09 2018-04-20 广西中烟工业有限责任公司 卷烟滤棒固化剂及其制备和应用
CN108095191A (zh) * 2017-11-10 2018-06-01 河南中烟工业有限责任公司 一种烟草滤棒用增塑剂及其应用
CN108185518A (zh) * 2017-12-22 2018-06-22 云南养瑞科技集团有限公司 一种具有可降解功能的滤芯
CN109288123B (zh) * 2018-08-24 2021-08-20 湖南中烟工业有限责任公司 一种降温嘴棒及卷烟
US11432581B2 (en) 2018-09-07 2022-09-06 Altria Client Services Llc Capsule containing a matrix, device with the matrix, and method of forming the matrix
EP3892132A4 (en) * 2018-12-07 2022-07-27 Japan Tobacco Inc. NON-COMBUSTIBLE HEATING TYPE SMOKING ARTICLE, ELECTRICAL HEATING TYPE SMOKING SYSTEM, AND METHOD FOR PRODUCING A NON-COMBUSTIBLE HEATING TYPE SMOKING ARTICLE
KR102445558B1 (ko) * 2020-07-06 2022-09-20 주식회사 케이티앤지 고체풍미제를 포함하는 흡연물품용 필터 및 그의 제조 방법

Citations (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CH319210A (fr) * 1952-12-05 1957-02-15 Eastman Kodak Co Elément filtrant notamment destiné à filtrer la fumée de tabac
FR1444047A (fr) * 1964-05-14 1966-07-01 Philip Morris Filtre pour la fumée du tabac
FR1456985A (fr) * 1964-10-09 1966-07-08 Eastman Kodak Co Procédé et appareillage destinés à la fabrication de filtres filamentaires pour fumée de tabac
FR1446578A (fr) * 1964-08-27 1966-07-22 Courtaulds Ltd Procédé de fabrication d'éléments filtrants pour cigarettes
US3407822A (en) * 1966-02-07 1968-10-29 Eastman Kodak Co Tobacco smoke filters containing polyethylene encapsulated cellulose particles
EP1354522A2 (de) * 2002-04-18 2003-10-22 Hauni Maschinenbau AG Zigarettenfilter und Verfahren zur Herstellung desselben
EP1695636A1 (de) * 2005-02-28 2006-08-30 Hauni Maschinenbau AG Filter für Artikel der Tabak verarbeitenden Industrie
EP1905317A1 (de) * 2006-09-28 2008-04-02 Hauni Maschinenbau Aktiengesellschaft Verfahren und Vorrichtung zum Erwärmen und Aushärten von Filterstäben
EP2016840A2 (de) * 2007-07-20 2009-01-21 Köhl Maschinenbau GmbH Vorrichtung zum Aufbringen von Aromastoffen auf einen Tabakstrang, Zigarettenpapier oder Filter von Zigaretten

Family Cites Families (92)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2904050A (en) * 1955-01-05 1959-09-15 Eastman Kodak Co Tobacco smoke filtering elements
US3079929A (en) * 1958-08-09 1963-03-05 Mueller Paul Adolf Filter plugs for cigarettes
US2992648A (en) * 1959-06-10 1961-07-18 Maxwell E Sparrow Cigarette filters
GB1113070A (en) * 1964-08-27 1968-05-08 Courtaulds Ltd Filter elements
US3310060A (en) * 1964-08-31 1967-03-21 Olin Mathieson Cellulosic filter for tobacco smoke
US3390039A (en) * 1964-10-09 1968-06-25 Eastman Kodak Co Method and apparatus for making additive filters
US3501361A (en) * 1965-09-22 1970-03-17 Eastman Kodak Co Method for producing cigarette filters
US3704192A (en) * 1966-09-21 1972-11-28 Celanese Corp Process of making tobacco smoke filters from extruded polymer and binder
US3640742A (en) * 1967-07-03 1972-02-08 Eastman Kodak Co Plasticizer blend for cellulose esters
US3476120A (en) * 1968-12-11 1969-11-04 Eastman Kodak Co Cigarette filter tow
US3599646A (en) * 1969-04-30 1971-08-17 American Filtrona Corp Cigarette filter
US3635226A (en) * 1969-06-16 1972-01-18 British American Tobacco Co Tobacco-smoke filters
US3605759A (en) * 1969-12-22 1971-09-20 Olin Corp Filter for tobacco smoke
US3900037A (en) * 1969-12-24 1975-08-19 Brown & Williamson Tobacco Tobacco-smoke filters
US3800676A (en) * 1970-05-13 1974-04-02 Celanese Corp Filters
US4156431A (en) * 1971-07-08 1979-05-29 Epstein Samuel S Smoke processing
US4059121A (en) * 1973-04-20 1977-11-22 Rothmans Of Pall Mall Canada Limited Filter for tobacco smoke
US3847064A (en) * 1972-09-11 1974-11-12 American Filtrona Corp Tobacco smoke filter
US4283186A (en) * 1976-10-06 1981-08-11 Celanese Corporation Method of forming cigarette filter material
GB1592549A (en) * 1976-10-06 1981-07-08 British American Tobacco Co Tobacco-smoke filters
CH625403A5 (ja) * 1977-08-11 1981-09-30 Celfil Co
GB2020158B (en) * 1978-04-21 1982-11-24 Cigarette Components Ltd Production of tobacco smoke filters
US4274914A (en) * 1978-08-28 1981-06-23 Celanese Corporation Filter material
US4221226A (en) * 1979-02-15 1980-09-09 Eastman Kodak Company Hot melt adhesive for bonding filter tow, and filter elements bonded thereby
US4357188A (en) * 1979-10-22 1982-11-02 Mitsubishi Rayon Co., Ltd. Method for manufacturing cigarette filters
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.
US4528050A (en) * 1981-07-30 1985-07-09 Molins Plc Producing filler material, particularly for cigarette filters
US4481958A (en) * 1981-08-25 1984-11-13 Philip Morris Incorporated Combustible carbon filter and smoking product
JPS6048156B2 (ja) * 1982-07-07 1985-10-25 三菱アセテート株式会社 タバコスモ−クフイルタ−
US4476807A (en) * 1983-02-18 1984-10-16 R. J. Reynolds Tobacco Company Apparatus for application of additives to cigarette filter tow
US4549875A (en) * 1983-06-02 1985-10-29 R. J. Reynolds Tobacco Co. Manufacture of tobacco smoke filters
US4655230A (en) * 1985-03-29 1987-04-07 Celanese Corporation Localized liquid additive applicator system for continuous cylindrical product
US4756316A (en) * 1985-08-12 1988-07-12 Philip Morris Incorporated Method for producing a cigarette filter rod
US4715390A (en) * 1985-11-19 1987-12-29 Philip Morris Incorporated Matrix entrapment of flavorings for smoking articles
US4807809A (en) * 1988-02-12 1989-02-28 R. J. Reynolds Tobacco Company Rod making apparatus for smoking article manufacture
GB8823388D0 (en) * 1988-10-05 1988-11-09 Cigarette Components Ltd Tobacco smoke filter containing particulate additive
US5074320A (en) * 1989-10-26 1991-12-24 R. J. Reynolds Tobacco Company Cigarette and cigarette filter
US5105834A (en) * 1989-12-18 1992-04-21 R.J. Reynolds Tobacco Company Cigarette and cigarette filter element therefor
US5141006A (en) * 1990-02-28 1992-08-25 Eastman Kodak Company Tobacco smoke filter material and process for production thereof
US5053066A (en) * 1990-05-04 1991-10-01 Hassenboehler Charles B Nonwoven filter and method of manufacture
US5246017A (en) * 1990-11-06 1993-09-21 R. J. Reynolds Tobacco Company Cigarette and cigarette filter element therefor
AU658372B2 (en) * 1990-11-19 1995-04-13 Cigarette Components Limited Smoke filter containing particulate smoke modifying additive
GB9121782D0 (en) * 1991-10-14 1991-11-27 Cigarette Components Ltd Cigarette filter containing particulate smoke modifying additive
US5465739A (en) * 1992-04-15 1995-11-14 R. J. Reynolds Tobacco Company Cigarette and cigarette filter element therefor
US5531235A (en) * 1992-09-28 1996-07-02 Hassenboehler, Jr.; Charles B. Cigarette filter micropleated web and method of manufacture
JP3316309B2 (ja) * 1993-07-13 2002-08-19 ダイセル化学工業株式会社 たばこフィルターおよびその製造方法
TW241198B (en) * 1993-09-06 1995-02-21 Daicel Chem A tobacco filter material and a method of producing the same
DE69520816T2 (de) * 1994-10-31 2001-09-13 Daicel Chem Tabakrauchfiltermaterial und Tabakrauchfilter hergestellt aus diesem Material
WO1997005790A1 (fr) * 1995-08-04 1997-02-20 Mitsubishi Rayon Co., Ltd. Materiau filtrant et filtre de cigarette realise avec ce materiau
US5709227A (en) * 1995-12-05 1998-01-20 R. J. Reynolds Tobacco Company Degradable smoking article
DE19605863A1 (de) * 1996-02-16 1997-08-21 Reemtsma H F & Ph Cigarettenfilter
JPH09316420A (ja) * 1996-05-27 1997-12-09 Daicel Chem Ind Ltd 水溶性ホットメルト接着剤と、これを用いたたばこフィルター及びその製造方法
US5817159A (en) * 1996-12-31 1998-10-06 Cahill; Scott A. Filter with interpenetrating polymer network that biodegrades
US6305382B1 (en) * 1997-04-07 2001-10-23 Schweitzer-Mauduit International, Inc. Reduced basis weight cigarette paper
US5911224A (en) * 1997-05-01 1999-06-15 Filtrona International Limited Biodegradable polyvinyl alcohol tobacco smoke filters, tobacco smoke products incorporating such filters, and methods and apparatus for making same
US6416624B1 (en) * 1997-10-10 2002-07-09 Union Carbide Chemicals & Plastics Technology Corporation Spray application of an additive composition to sheet materials
DE60142908D1 (de) * 2000-08-31 2010-10-07 Japan Tobacco Inc Filterherstellungsmaschine
EP1408780A2 (en) * 2000-11-10 2004-04-21 Vector Tobacco Ltd. Method and product for removing carcinogens from tobacco smoke
US20090065012A1 (en) * 2001-08-14 2009-03-12 Pankaj Patel Materials and Methods for Manufacturing Cigarettes
AU2002340407A1 (en) * 2001-11-09 2003-05-26 Vector Tobacco Inc. Method and composition for mentholation of charcoal filtered cigarettes
TWI324049B (en) * 2002-01-08 2010-05-01 Japan Tobacco Inc Smoking filter and smoking article
UA80442C2 (en) * 2002-09-04 2007-09-25 Japan Tobacco Inc Filter for smoking
DE10252823A1 (de) * 2002-11-13 2004-06-09 Biotec Biologische Naturverpackungen Gmbh & Co. Kg Filterelement
US7281540B2 (en) * 2002-12-20 2007-10-16 R.J. Reynolds Tobacco Company Equipment and methods for manufacturing cigarettes
US6998009B2 (en) * 2003-06-10 2006-02-14 Ut-Battelle, Llc Filter and method of fabricating
DE502004003664D1 (de) * 2003-09-03 2007-06-14 Hauni Maschinenbau Ag Verfahren und Vorrichtung zur Herstellung eines Filterstrangs
US7381277B2 (en) * 2004-07-29 2008-06-03 R.U. Reynolds Tobacco Company Flavoring a cigarette by using a flavored filter plug wrap
GB0404324D0 (en) * 2004-02-27 2004-03-31 British American Tobacco Co Smoking article and apparatus and process for manufacturing a smoking article
DE102004048651A1 (de) * 2004-10-06 2006-04-13 Rhodia Acetow Gmbh Tabakrauchfilter oder -filterelemente mit einem Gehalt an Zusatzstoffen
US7856989B2 (en) * 2004-12-30 2010-12-28 Philip Morris Usa Inc. Electrostatically produced fast dissolving fibers
DE102005015877A1 (de) * 2005-04-06 2006-10-12 Hauni Maschinenbau Ag Verfahren und Einrichtung zum Auftragen von Triacetin auf eine Filtermaterialbahn
JP2009506761A (ja) * 2005-09-05 2009-02-19 ローディア アセトウ ゲーエムベーハー タバコの煙用フィルタ又はフィルタエレメント、そのようなフィルタ又はフィルタエレメントを含むシガレット、及びそのようなフィルタ又はフィルタエレメントを作製する方法
RU2410993C2 (ru) * 2006-01-27 2011-02-10 Бритиш Америкэн Тобэкко (Инвестментс) Лимитед Способ и устройство для изготовления стержней курительного изделия
MY146137A (en) * 2006-03-10 2012-06-29 British American Tobacco Co Smoking article filter
US8739802B2 (en) * 2006-10-02 2014-06-03 R.J. Reynolds Tobacco Company Filtered cigarette
US7855261B2 (en) * 2006-12-08 2010-12-21 Eastman Chemical Company Aldehyde removal
US8846651B2 (en) * 2007-03-01 2014-09-30 Takasago International Corporation Lipid composition having excellent shape retention property and product
GB0713905D0 (en) * 2007-07-17 2007-08-29 British American Tobacco Co Cellulose acetate thread in filter
EP2025251A1 (en) * 2007-08-17 2009-02-18 Philip Morris Products S.A. Multi-component filter for a smoking article
CN101896082B (zh) * 2007-12-14 2013-10-02 日本烟草产业株式会社 香烟过滤嘴及带有过滤嘴的香烟
US8613284B2 (en) * 2008-05-21 2013-12-24 R.J. Reynolds Tobacco Company Cigarette filter comprising a degradable fiber
GB0903136D0 (en) * 2009-02-25 2009-04-08 British American Tobacco Co Smoking articles and method for manufacturing smoking articles
GB0910198D0 (en) * 2009-06-12 2009-07-29 British American Tobacco Co Smoking article
US8534294B2 (en) * 2009-10-09 2013-09-17 Philip Morris Usa Inc. Method for manufacture of smoking article filter assembly including electrostatically charged fiber
GB0920397D0 (en) * 2009-11-20 2010-01-06 Filtrona Int Ltd Tobacco smoke filter
US20110220130A1 (en) * 2009-12-15 2011-09-15 John-Paul Mua Tobacco Product And Method For Manufacture
GB0922253D0 (en) * 2009-12-21 2010-02-03 British American Tobacco Co Sheet filter materials with additives
RU93226U1 (ru) * 2010-01-11 2010-04-27 Закрытое акционерное общество "Нево Табак" Сигарета
US20110180084A1 (en) * 2010-01-27 2011-07-28 R.J. Reynolds Tobacco Company Apparatus and associated method for forming a filter component of a smoking article
US20110271968A1 (en) * 2010-05-07 2011-11-10 Carolyn Rierson Carpenter Filtered Cigarette With Modifiable Sensory Characteristics
US8950407B2 (en) * 2010-06-30 2015-02-10 R.J. Reynolds Tobacco Company Degradable adhesive compositions for smoking articles
US8720450B2 (en) * 2010-07-30 2014-05-13 R.J. Reynolds Tobacco Company Filter element comprising multifunctional fibrous smoke-altering material

Patent Citations (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CH319210A (fr) * 1952-12-05 1957-02-15 Eastman Kodak Co Elément filtrant notamment destiné à filtrer la fumée de tabac
FR1444047A (fr) * 1964-05-14 1966-07-01 Philip Morris Filtre pour la fumée du tabac
FR1446578A (fr) * 1964-08-27 1966-07-22 Courtaulds Ltd Procédé de fabrication d'éléments filtrants pour cigarettes
FR1456985A (fr) * 1964-10-09 1966-07-08 Eastman Kodak Co Procédé et appareillage destinés à la fabrication de filtres filamentaires pour fumée de tabac
US3407822A (en) * 1966-02-07 1968-10-29 Eastman Kodak Co Tobacco smoke filters containing polyethylene encapsulated cellulose particles
EP1354522A2 (de) * 2002-04-18 2003-10-22 Hauni Maschinenbau AG Zigarettenfilter und Verfahren zur Herstellung desselben
EP1695636A1 (de) * 2005-02-28 2006-08-30 Hauni Maschinenbau AG Filter für Artikel der Tabak verarbeitenden Industrie
EP1905317A1 (de) * 2006-09-28 2008-04-02 Hauni Maschinenbau Aktiengesellschaft Verfahren und Vorrichtung zum Erwärmen und Aushärten von Filterstäben
EP2016840A2 (de) * 2007-07-20 2009-01-21 Köhl Maschinenbau GmbH Vorrichtung zum Aufbringen von Aromastoffen auf einen Tabakstrang, Zigarettenpapier oder Filter von Zigaretten

Cited By (12)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US11039642B2 (en) 2011-12-30 2021-06-22 Philip Morris Products S.A. Smoking article with front-plug and aerosol-forming substrate and method
US11272731B2 (en) 2011-12-30 2022-03-15 Philip Morris Products S.A. Aerosol-generating article for use with an aerosol-generating device
US11582998B2 (en) 2011-12-30 2023-02-21 Philip Morris Products S.A. Smoking article with front-plug and method
CN108030151A (zh) * 2012-02-13 2018-05-15 菲利普莫里斯生产公司 具有气溶胶冷却元件的气溶胶生成物品
US11140916B2 (en) 2012-02-13 2021-10-12 Philip Morris Products S.A. Aerosol-generating article having an aerosol-cooling element
CN108030151B (zh) * 2012-02-13 2021-12-21 菲利普莫里斯生产公司 具有气溶胶冷却元件的气溶胶生成物品
US11571017B2 (en) 2012-05-31 2023-02-07 Philip Morris Products S.A. Flavoured rods for use in aerosol-generating articles
US11278052B2 (en) 2012-06-21 2022-03-22 Philip Morris Products S.A. Smoking article for use with an internal heating element
RU2641502C2 (ru) * 2012-10-22 2018-01-17 Филип Моррис Продактс С.А. Сегмент фильтра, содержащий ацетатную соль и глицерин
WO2014207704A3 (en) * 2013-06-26 2015-07-16 Pan Jiayi Filter media
WO2020089093A1 (en) * 2018-10-29 2020-05-07 Nerudia Limited Heat-not-burn consumable
EP3949772A4 (en) * 2019-03-29 2022-11-16 Japan Tobacco Inc. COOLING SEGMENT, NON-COMBUSTION HEATING TYPE AROMA INHALATION ARTICLE, METHOD OF USING A NON-COMBUSTION HEATING TYPE AROMA INHALATION ARTICLE, AND HEATING WITHOUT COMBUSTION

Also Published As

Publication number Publication date
EP2568833A1 (en) 2013-03-20
JP2013526272A (ja) 2013-06-24
NZ603222A (en) 2014-06-27
AU2011251791B2 (en) 2013-11-14
CN102883629B (zh) 2015-05-20
CN102883629A (zh) 2013-01-16
RU2565566C2 (ru) 2015-10-20
CL2012003121A1 (es) 2013-02-15
MX2012012474A (es) 2013-02-27
AR084386A1 (es) 2013-05-15
BR112012028950A2 (pt) 2016-07-26
CA2798042A1 (en) 2011-11-17
CA2798042C (en) 2014-11-18
EP2568833B1 (en) 2017-01-18
UA106913C2 (uk) 2014-10-27
KR20130028937A (ko) 2013-03-20
US20130137561A1 (en) 2013-05-30
BR112012028950B1 (pt) 2019-12-03
ZA201208308B (en) 2016-09-28
JP5872547B2 (ja) 2016-03-01
KR20150144820A (ko) 2015-12-28
RU2012153392A (ru) 2014-06-20
HK1176525A1 (en) 2013-08-02
GB201007946D0 (en) 2010-06-30

Similar Documents

Publication Publication Date Title
CA2798042C (en) Filter additive
AU2011251791A1 (en) Filter additive
CA2784216C (en) Sheet filter materials with additives
KR102330282B1 (ko) 에어로졸 발생 물품
AU2012311315B2 (en) Filter materials and uses thereof
JP2017500021A (ja) 分解性フィルター構成要素を含む喫煙物品フィルター
JP5960119B2 (ja) 分解可能なプラグラップ及びその用途
KR20220110533A (ko) 폴리하이드록시알카노에이트 중합체 또는 공중합체의 높은 함량을 갖는 필터를 포함하는 에어로졸 발생 요소
US20210378290A1 (en) Paper sheet filter element for a smoking article, and associated method
KR20230141814A (ko) 다수의 에어로졸 발생 세그먼트를 갖는 에어로졸 발생 로드
WO2024110525A1 (en) Sustainable filter

Legal Events

Date Code Title Description
WWE Wipo information: entry into national phase

Ref document number: 201180023581.5

Country of ref document: CN

121 Ep: the epo has been informed by wipo that ep was designated in this application

Ref document number: 11724440

Country of ref document: EP

Kind code of ref document: A1

WWE Wipo information: entry into national phase

Ref document number: MX/A/2012/012474

Country of ref document: MX

ENP Entry into the national phase

Ref document number: 2798042

Country of ref document: CA

WWE Wipo information: entry into national phase

Ref document number: 2012003121

Country of ref document: CL

ENP Entry into the national phase

Ref document number: 2013509623

Country of ref document: JP

Kind code of ref document: A

NENP Non-entry into the national phase

Ref country code: DE

WWE Wipo information: entry into national phase

Ref document number: 12012502225

Country of ref document: PH

ENP Entry into the national phase

Ref document number: 2011251791

Country of ref document: AU

Date of ref document: 20110511

Kind code of ref document: A

WWE Wipo information: entry into national phase

Ref document number: 10262/CHENP/2012

Country of ref document: IN

ENP Entry into the national phase

Ref document number: 20127032402

Country of ref document: KR

Kind code of ref document: A

REEP Request for entry into the european phase

Ref document number: 2011724440

Country of ref document: EP

WWE Wipo information: entry into national phase

Ref document number: 2011724440

Country of ref document: EP

ENP Entry into the national phase

Ref document number: 2012153392

Country of ref document: RU

Kind code of ref document: A

WWE Wipo information: entry into national phase

Ref document number: 13696296

Country of ref document: US

REG Reference to national code

Ref country code: BR

Ref legal event code: B01A

Ref document number: 112012028950

Country of ref document: BR

ENP Entry into the national phase

Ref document number: 112012028950

Country of ref document: BR

Kind code of ref document: A2

Effective date: 20121112