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EP1354522A2 - Filtre de cigarette et procédé pour sa fabrication - Google Patents

Filtre de cigarette et procédé pour sa fabrication Download PDF

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Publication number
EP1354522A2
EP1354522A2 EP03004594A EP03004594A EP1354522A2 EP 1354522 A2 EP1354522 A2 EP 1354522A2 EP 03004594 A EP03004594 A EP 03004594A EP 03004594 A EP03004594 A EP 03004594A EP 1354522 A2 EP1354522 A2 EP 1354522A2
Authority
EP
European Patent Office
Prior art keywords
filter
fibers
component
length
strand
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Granted
Application number
EP03004594A
Other languages
German (de)
English (en)
Other versions
EP1354522B1 (fr
EP1354522A3 (fr
Inventor
Stephan Wolff
Sönke Horn
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Koerber Technologies GmbH
Original Assignee
Hauni Maschinenbau GmbH
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Hauni Maschinenbau GmbH filed Critical Hauni Maschinenbau GmbH
Publication of EP1354522A2 publication Critical patent/EP1354522A2/fr
Publication of EP1354522A3 publication Critical patent/EP1354522A3/fr
Application granted granted Critical
Publication of EP1354522B1 publication Critical patent/EP1354522B1/fr
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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Classifications

    • A—HUMAN NECESSITIES
    • A24—TOBACCO; CIGARS; CIGARETTES; SIMULATED SMOKING DEVICES; SMOKERS' REQUISITES
    • A24D—CIGARS; CIGARETTES; TOBACCO SMOKE FILTERS; MOUTHPIECES FOR CIGARS OR CIGARETTES; MANUFACTURE OF TOBACCO SMOKE FILTERS OR MOUTHPIECES
    • A24D3/00—Tobacco smoke filters, e.g. filter-tips, filtering inserts; Filters specially adapted for simulated smoking devices; Mouthpieces for cigars or cigarettes
    • A24D3/06—Use of materials for tobacco smoke filters
    • A24D3/062—Use of materials for tobacco smoke filters characterised by structural features
    • A24D3/063—Use of materials for tobacco smoke filters characterised by structural features of the fibers
    • A24D3/065—Use of materials for tobacco smoke filters characterised by structural features of the fibers with sheath/core of bi-component type 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
    • A24D3/06—Use of materials for tobacco smoke filters
    • A24D3/08—Use of materials for tobacco smoke filters of organic materials as carrier or major constituent
    • 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 invention relates to a filter for articles tobacco processing industry, especially for cigarettes, comprising at least two filter components, wherein a filter component is a type of multi-component fiber is.
  • the invention further relates to a Process for producing a corresponding filter for articles of the tobacco processing industry, in particular for cigarettes.
  • DE 30 28 328 A1 describes a method for manufacturing a filter mass, especially for cigarette filters known.
  • the process is based on a fiber containing mass, which is a homogeneous mixture represents different types of fibers.
  • This is a synthetic, at a relatively low temperature melting and thereby causing fiber and also a more heat resistant, pollutant Tobacco smoke absorbing fiber contained in the mixture, even before applying heat to a cylindrical one Body is shaped, for example the Dimensions of a cigarette filter.
  • the process sees the use of at least two different ones Types of fibers before, one against the applied Insensitive to heat, but absorbs pollutants in the smoke is.
  • the second fiber melts under the one used Heat completely, resulting in that of this fiber originally occupied space in all directions extending network of interconnected Pore forms, which is open to the passage of smoke remains.
  • the molten mass forms at the crossing points of the absorbent fibers these together connecting droplets.
  • the filters produced in this way have the disadvantage that an inhomogeneous distribution over the filter produced of the drag is caused. Furthermore which the tobacco smoke, or the components from the Fibers absorbing tobacco smoke through the melted Components partially covered, so that the absorption properties deteriorate.
  • it is an object of the present invention specify a filter that has a homogeneous structure has that is easy to manufacture, and the very variable from the filter properties can be. It is also an object of the present Invention to provide a corresponding method with the appropriate filter simple, effective and can be produced in a variable and homogeneous manner can.
  • a filter for articles the tobacco processing industry especially for Cigarettes comprising at least two filter components, which is further developed in that a filter component is a type of multi-component fiber, the length of the multi-component fibers being smaller is than the length of the filter.
  • the inventive development of the known Filters can be very homogeneous, a corresponding variability is made possible and an easy manufacture.
  • the length is preferred of the multi-component fibers between 0.5 mm and 30 mm. Also preferred is the length of the multi-component fibers between 2 mm and 8 mm and in particular between 3 mm and 6 mm.
  • the Shell material has a lower melting point than that Having core material can be a very secure bond of fibers are generated in the filter, doing this the filter or the mixture of fibers to which the filter is made, to a temperature brought, which is slightly above the melting point of the Cover material is, so that a corresponding gluing of filter components is made possible.
  • the multi-component fiber is a bicomponent fiber. With a corresponding bicomponent fiber can be made of polyethylene (PE) and the core for example made of polyester (PET) respectively Polyethylene terephthalate. The melting point of the shell is then at 127 ° C and the melting point of the core 256 ° C.
  • a corresponding Bicomponent fiber is made by Trevira (65926 Frankfurt, Germany).
  • the Trevira company has the type designation 255, has a titer of 3.0 dtex, a cutting length between 3 and 6 mm, a core made of PES (chemical fiber made of polyester) and a coat or a shell Copolyethylene, the jacket or the Envelope is modified increased liability, that is, with Additives are provided which result in a lower surface tension to lead.
  • stick and / or stick on at least some of the filter components Points of contact with the multi-component fibers.
  • the term “contact point” includes also the terms “crossing point” and "attachment point”. Adhesion and / or sticking is then achieved if the filter components and especially the Multi-component fibers heated to a temperature be above the melting temperature of the shell lies. In this case, the shell softens accordingly or melts them, so that an adhesive bond or adhesive connection to others Components of the filter arise at points of contact can. After the corresponding filter components have cooled down a very dimensionally stable filter is created.
  • another type of fiber another Filter component is a very environmentally friendly Filters are made, namely if the further Type of fibers, for example, biodegradable or are bio-producible.
  • the coal can be activated.
  • It other fibers can also be used, for example Hemp fiber or cotton fiber or the like. These fibers adsorb and / or absorb preferably components of tobacco smoke effectively.
  • the length of the other type of fiber is preferred smaller than the length of the filter and is preferably between 0.1 mm and 30 mm and in particular between 0.2 mm and 10 mm.
  • a powdery or granular material is another filter component, it is possible very to effectively filter gaseous smoke.
  • the powdery or granular material preferably around activated carbon powder or granules from activated carbon.
  • it can also are appropriate catalysts the absorption of smoke components increase respectively a chemical conversion into smokers harmless Cause components.
  • a major advantage the invention is that the effective surface of the powder or granules, the one is another filter component, compared to corresponding Filters made from cellulose acetate, the are mixed with powder, for example, significantly increased is because there is no adhesive like triacitine on the surface covered.
  • the proportion of multi-component fibers is between 2% and 100% and the share of other fibers between 0% and 98%.
  • the percentages are within the scope of the invention the proportions of materials, especially as To understand weight percentages.
  • a particularly effective way of binding cigarette smoke Filter is given when the proportion of powder or granular material between 80% by weight or 100% by weight and preferably 90% by weight.
  • the filter is preferably part of a multiple filter.
  • the term includes Multiple filters also include the term multi-segment filter.
  • the filter according to the invention is thus the entire filter for example a cigarette or a segment of one Multiple filter.
  • the method according to the invention makes it possible to to produce a very homogeneous filter, one inexpensive manufacture is possible and being a correspondingly high variability in production given is.
  • the temperature at which the fiber strand is heated is preferably greater than the melting temperature the shell or the outer jacket of the multi-component fibers. This is available from a cover For example, polyethylene at over 127 ° C.
  • Bicomponent fiber used is a polyester core preferred, which has a melting temperature of 256 ° C. has, so that the fiber strand preferably to a Temperature is heated below 256 ° C.
  • the fiber strand in a temperature range between 127 ° C and 150 ° C heated.
  • a very cost-effective and also environmentally friendly Filters can be manufactured.
  • Another suitable ingredient is for example a cellulose fiber.
  • Appropriate Cellulose fibers can be obtained, for example, from Stora Enso Pulp, from Falun, Sweden. On corresponding cellulose fiber type, which is preferred is used is called Stora Fluff EF.
  • Stora Fluff EF As another component can also be a powder or granular Part of an adsorber, absorber, catalyst or flavors are used.
  • a particularly effective and simple procedure is given if at least to generate the strand part of the components on a grant is formed.
  • an appropriate one Filter strand or corresponding filter on particularly homogeneous way It becomes this referred to the manufacture of tobacco strands that is described for example in DE 36 24 098 C2.
  • a corresponding method can preferably also be used for Manufacture of filters are used, the Starting components in a loose mixture of the production of the strand, and then accordingly as in the manufacture of tobacco rod in particular onto a suction belt and then processed further to become.
  • the content of DE 36 24 098 C2 can insofar for the manufacturing process of filters respectively Filter strands are applied.
  • the shivered Fibers are present in a length that is preferably less than the length of the one to be produced Filter.
  • a particularly effective and inexpensive Filters can be produced if at least one another ingredient in powder form or as granules is added to the strand during heating or when Seek the multi-component fibers or the Mix is added. If, for example, a powder is added from activated carbon, so it is possible to get one very large surface area on the carbon powder particles provide so that effectively fewer carbon particles must be added. Furthermore, it is not then more necessary, an activated carbon granulate filter for one To provide multiple filters, which is relatively expensive is in the making. It is also a more homogeneous one Mixing of the powder in the multi-component fibers or possible in the mixture of fibers than at a granulate filter. In addition, the draft resistance more constant and easier to influence.
  • the strand is shaped using a format set is produced, in particular a cylindrical shape , it is possible to obtain the required gauge blocks to produce filters in a simple manner manufacture.
  • a format set is produced, in particular a cylindrical shape
  • DE 36 24 098 C2 referenced in the corresponding format set is described, by means of which, however, a cigarette rod is produced.
  • a corresponding, on the physical Properties of the filter components adapted Format furniture can be used according to this invention Find.
  • the strand is preferably used during molding compacted. It is also in one embodiment possible to cover the strand with a wrapping material envelop.
  • a paper strip is suitable as wrapping material, that of a bobbin, for example is pulled off and on a driven format tape is placed.
  • the format tape transports the Filter strand or the fiber strand and the Paper strips through a corresponding format set, in which the paper strip is folded around the fiber strand is so that an edge protrudes from a Glue is glued in a known manner. Finally the adhesive seam is closed and a seam plate dried.
  • the strand is heated in or after the Forming in the format set. Preferably happens the heating after cutting the filter strand in Filter n times the length of use or filter rods. Finally the filter is cut to length or cut off.
  • filters of n times the working length are generated, which are then used to manufacture, for example Filter cigarettes continue to be used.
  • n is here a natural number and preferably even. If, for example the filter then between two Brought tobacco sticks and connected to them, is n two, so the filter is twice the usable length after connecting with the tobacco sticks in the middle is cut to act as a filter for two cigarettes to serve.
  • a filter is preferably manufactured according to inventive method or a preferred Embodiment of the method according to the invention is provided.
  • a cigarette with a tobacco stick and one of the aforementioned according to the invention Provide filters or preferred filters.
  • FIGS. 1a to 1d show a schematic Cross-sectional representation of filter cigarettes.
  • the respective Filters 10 in FIGS. 1a to 1d are each different built up.
  • the filter 10 consists of bicomponent fibers 12, for example from bicomponent fibers of the type 255 from Trevira (65926 Frankfurt, Germany), the described above with regard to their properties were.
  • the bicomponent fibers 12 consist of a Core 20, for example, made of PES, i.e. a chemical fiber made of polyester or PET, i.e. polyester.
  • the envelope 21 consists in this embodiment of PE (polyethylene).
  • the melting point of the shell is 127 ° C and the Melting temperature of the core 256 ° C.
  • To a corresponding Making filters is the bicomponent fiber mixed accordingly, with loose fibers one finite length that is less than the length of the filter to be manufactured.
  • the bicomponent fibers have one Cutting length of 6 mm.
  • the filter to be manufactured has a length of 21 mm.
  • the bicomponent fibers are used to manufacture the Filters onto a suction conveyor to get one Electricity or a strand of bicomponent fibers to build.
  • This stream or strand off Bicomponent fibers are then made using a format set into the filter shape, preferably a cylindrical one, shaped and wrapped with wrapping paper 17.
  • a format set into the filter shape preferably a cylindrical one, shaped and wrapped with wrapping paper 17.
  • the sheath 21 of the bicomponent fibers 12 so that the shell melts or melts.
  • To a subsequent cooling then turned to the Crossing points 18 of the bicomponent fibers connections formed to a composite of the bicomponent fibers lead in the strand.
  • the corresponding warming of the Strands can be placed in the format set before the filter is formed happen.
  • a filter which consists of a Mixture of fibers consists, on the one hand bicomponent fibers 12 find use and on the other hand cellulose fibers 13.
  • a mixture is preferably formed from 20 to 30% bicomponent fibers and 70 to 80% cellulose fibers used.
  • the cellulose fibers serve here as absorption or adsorption fibers and the bicomponent fibers with the appropriate gluing points the crossing points 18 as a scaffold. It should be noted that not only the bicomponent fibers together are glued, but also the cellulose fibers to the Crossing points 18 with the bicomponent fibers.
  • a further filter which consists of consists of three components, being an additional component an activated carbon granulate 14 is used.
  • This Activated carbon granulate particles or activated carbon powder particles stick to one corresponding attachment point 19 on the bicomponent fibers. Because of the small sticking point or glue point the carbon particle 14 on the bicomponent fiber 12 results there is a large free surface in the carbon particles, that is active.
  • Granules or powders can also other adsorbates, catalysts and / or flavors Find use.
  • the grain size of the activated carbon powder is preferably at most 10 ⁇ m. It can for example 20 mg corresponding to a filter to be added.
  • FIG. 4 is a scanning electron microscope image a corresponding part of a filter with a Mixture of bicomponent fibers 12, cellulose fibers 13 and particles of an activated carbon powder 14. It can be seen particularly well that the activated carbon particles 14 stick to the bicomponent fibers. However, there are also some activated carbon particles 14 on a cellulose fiber 13 arranged that adhere there, but less fixed than on the bicomponent fiber 12.
  • a multiple filter 10 ' is shown, the consists of a filter element 16, for example can comprise a conventional cellulose acetate and one Filter element 16 ', for example the filter element from Fig. 1c correspond to the composition can.
  • a filter manufactured according to the invention preferably has a length of 21 mm, a diameter of 7.8 mm, a weight of 110 mg, a tensile resistance of 55 mm water column.
  • the filter comprises 75% cellulose fibers of the type stora Fluff EF with a fiber length of 0.4 mm and 25% Type 255 bicomponent fibers from Trevira a cutting length of 6 mm and a diameter of 25 microns.
  • FIG. 5 shows a schematic illustration of a cross section through a filter cigarette corresponding to the Figures 1a to 1d.
  • the filter according to the invention two filter elements 16 and 16 ', the filter element 16 'a mixture of bicomponent fibers 12 and granular activated carbon 14 or activated carbon powder 14.
  • On particularly preferred mixture comprises between 80 and 95 % Activated carbon granules or powder 14 and 5 to 20% Bicomponent fibers 12.
  • A is particularly preferred Mixing ratio of approx. 90% activated carbon granules or powder 14 and about 10% bicomponent fibers 12. Im The percentages in particular are within the scope of this invention Percentages by weight.
  • the activated carbon granulate or powder is, for example Granules Norit GCN 3060 from Norit Nederland B.V.
  • the grain size for 90% of the granules is between 0.25 mm and 0.59 mm.
  • FIG. 6 is a scanning electron microscope image a section through a filter according to the invention, comprising approx. 10% bicomponent fibers 12 and approx. 90% Activated carbon granules 14. This is a 205x magnification.
  • a scale is displayed that covers a total of 1 mm, the units within this scale 100 microns are great.
  • the activated carbon granules 14 can be seen in FIG. 6 is held in a matrix of bicomponent fibers 12, where holding in particular by adhering to the Bicomponent fibers is possible after this when Manufacturing process of the filter for melting the Coat have been brought.

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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)
  • Nonwoven Fabrics (AREA)
EP03004594A 2002-04-18 2003-03-01 Filtre de cigarette et procédé pour sa fabrication Expired - Lifetime EP1354522B1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE10217410 2002-04-18
DE10217410A DE10217410A1 (de) 2002-04-18 2002-04-18 Zigarettenfilter und Verfahren zur Herstellung desselben

Publications (3)

Publication Number Publication Date
EP1354522A2 true EP1354522A2 (fr) 2003-10-22
EP1354522A3 EP1354522A3 (fr) 2003-11-12
EP1354522B1 EP1354522B1 (fr) 2005-12-14

Family

ID=28458920

Family Applications (1)

Application Number Title Priority Date Filing Date
EP03004594A Expired - Lifetime EP1354522B1 (fr) 2002-04-18 2003-03-01 Filtre de cigarette et procédé pour sa fabrication

Country Status (13)

Country Link
US (1) US20030213496A1 (fr)
EP (1) EP1354522B1 (fr)
JP (1) JP2004024242A (fr)
CN (1) CN1451325A (fr)
AT (1) ATE312522T1 (fr)
BR (1) BR0301195A (fr)
CA (1) CA2424810A1 (fr)
DE (2) DE10217410A1 (fr)
ES (1) ES2252562T3 (fr)
MX (1) MXPA03003057A (fr)
MY (1) MY135364A (fr)
PL (1) PL359692A1 (fr)
RU (1) RU2311858C2 (fr)

Cited By (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE10354797A1 (de) * 2003-11-21 2005-06-30 Hauni Maschinenbau Ag Verfahren und Vorrichtung zur Herstellung eines umhüllungsmaterialstreifenfreien Filterstrangs der tabakverarbeitenden Industrie
EP1695636A1 (fr) * 2005-02-28 2006-08-30 Hauni Maschinenbau AG Filtre pour articles de l'industrie du tabac
US7318797B2 (en) 2003-04-03 2008-01-15 Hauni Maschinenbau Ag Continuous rod machine arrangement for producing nonwoven filters
EP1905317A1 (fr) * 2006-09-28 2008-04-02 Hauni Maschinenbau Aktiengesellschaft Procédé et dispositif de chauffage et de durcissement de tiges de filtre
WO2009080368A1 (fr) * 2007-12-20 2009-07-02 Philip Morris Products S.A. Filtre comportant des fibres orientées de façon aléatoire pour diminuer le passage des particules
WO2011141735A1 (fr) * 2010-05-12 2011-11-17 British American Tobacco (Investments) Limited Additif pour filtre
CN102273732A (zh) * 2011-06-03 2011-12-14 湖南中烟工业有限责任公司 一种弱极性卷烟纸质滤材及其制备和应用方法
US9788572B2 (en) 2009-10-09 2017-10-17 Philip Morris Usa Inc. Method and apparatus for manufacture of smoking article filter assembly including electrostatically charged fibers

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ES2264744T3 (es) * 2003-04-03 2007-01-16 Hauni Maschinenbau Ag Procedimiento para la preparacion de fibras discontinuas y dispositivo de preparacion de fibras discontinuas para el uso en la fabricacion de filtros.
ATE361004T1 (de) * 2003-09-03 2007-05-15 Hauni Maschinenbau Ag Verfahren und vorrichtung zur herstellung eines filterstrangs
DE102006018102A1 (de) 2006-04-18 2007-10-25 Hauni Maschinenbau Ag Faserfilterherstellung
DE102006038973A1 (de) * 2006-08-21 2008-03-20 Hauni Maschinenbau Ag Papierbeleimung bei der Strangherstellung
TW200936065A (en) * 2008-01-23 2009-09-01 Filtrona Int Ltd Tobacco smoke filter
GB0805773D0 (en) * 2008-03-31 2008-04-30 British American Tobacco Co Method and apparatus for the plasma processing of filter
US8375958B2 (en) * 2008-05-21 2013-02-19 R.J. Reynolds Tobacco Company Cigarette filter comprising a carbonaceous fiber
US8613284B2 (en) * 2008-05-21 2013-12-24 R.J. Reynolds Tobacco Company Cigarette filter comprising a degradable fiber
CN103222684B (zh) * 2008-05-21 2015-11-18 R.J.雷诺兹烟草公司 用于形成吸烟制品的滤嘴组件的设备和相关方法以及由其制造的吸烟制品
DE102010000680A1 (de) 2010-01-05 2011-07-07 Hauni Maschinenbau AG, 21033 Herstellung von Filtersträngen und Filterstrangmaschine
US20120000480A1 (en) * 2010-06-30 2012-01-05 Sebastian Andries D Biodegradable cigarette filter
US20120000479A1 (en) * 2010-06-30 2012-01-05 Sebastian Andries D Biodegradable cigarette filter
US8720450B2 (en) 2010-07-30 2014-05-13 R.J. Reynolds Tobacco Company Filter element comprising multifunctional fibrous smoke-altering material
US10064429B2 (en) 2011-09-23 2018-09-04 R.J. Reynolds Tobacco Company Mixed fiber product for use in the manufacture of cigarette filter elements and related methods, systems, and apparatuses
GB2503644A (en) * 2012-05-03 2014-01-08 British American Tobacco Co Filter
US9179709B2 (en) 2012-07-25 2015-11-10 R. J. Reynolds Tobacco Company Mixed fiber sliver for use in the manufacture of cigarette filter elements
US9119419B2 (en) 2012-10-10 2015-09-01 R.J. Reynolds Tobacco Company Filter material for a filter element of a smoking article, and associated system and method
US10524500B2 (en) 2016-06-10 2020-01-07 R.J. Reynolds Tobacco Company Staple fiber blend for use in the manufacture of cigarette filter elements
SG10201903923SA (en) * 2018-12-31 2020-03-30 Ysq Int Pte Ltd Apparatus and method for producing a filter element

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Cited By (11)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US7318797B2 (en) 2003-04-03 2008-01-15 Hauni Maschinenbau Ag Continuous rod machine arrangement for producing nonwoven filters
DE10354797A1 (de) * 2003-11-21 2005-06-30 Hauni Maschinenbau Ag Verfahren und Vorrichtung zur Herstellung eines umhüllungsmaterialstreifenfreien Filterstrangs der tabakverarbeitenden Industrie
EP1695636A1 (fr) * 2005-02-28 2006-08-30 Hauni Maschinenbau AG Filtre pour articles de l'industrie du tabac
EP1905317A1 (fr) * 2006-09-28 2008-04-02 Hauni Maschinenbau Aktiengesellschaft Procédé et dispositif de chauffage et de durcissement de tiges de filtre
WO2009080368A1 (fr) * 2007-12-20 2009-07-02 Philip Morris Products S.A. Filtre comportant des fibres orientées de façon aléatoire pour diminuer le passage des particules
EA017412B1 (ru) * 2007-12-20 2012-12-28 Филип Моррис Продактс С.А. Фильтр, содержащий беспорядочно ориентированные волокна для уменьшения прорыва частиц
US9788572B2 (en) 2009-10-09 2017-10-17 Philip Morris Usa Inc. Method and apparatus for manufacture of smoking article filter assembly including electrostatically charged fibers
US10226070B2 (en) 2009-10-09 2019-03-12 Philip Morris Usa Inc. Filter rod including electrostatically charged fibers
WO2011141735A1 (fr) * 2010-05-12 2011-11-17 British American Tobacco (Investments) Limited Additif pour filtre
AU2011251791B2 (en) * 2010-05-12 2013-11-14 British American Tobacco (Investments) Limited Filter additive
CN102273732A (zh) * 2011-06-03 2011-12-14 湖南中烟工业有限责任公司 一种弱极性卷烟纸质滤材及其制备和应用方法

Also Published As

Publication number Publication date
ATE312522T1 (de) 2005-12-15
CN1451325A (zh) 2003-10-29
CA2424810A1 (fr) 2003-10-18
RU2311858C2 (ru) 2007-12-10
US20030213496A1 (en) 2003-11-20
EP1354522B1 (fr) 2005-12-14
BR0301195A (pt) 2004-08-17
PL359692A1 (en) 2003-10-20
MXPA03003057A (es) 2005-10-19
EP1354522A3 (fr) 2003-11-12
JP2004024242A (ja) 2004-01-29
ES2252562T3 (es) 2006-05-16
DE50301891D1 (de) 2006-01-19
DE10217410A1 (de) 2003-10-30
MY135364A (en) 2008-03-31

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