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EP1868457A1 - Tabacco smoke filter - Google Patents

Tabacco smoke filter

Info

Publication number
EP1868457A1
EP1868457A1 EP06707293A EP06707293A EP1868457A1 EP 1868457 A1 EP1868457 A1 EP 1868457A1 EP 06707293 A EP06707293 A EP 06707293A EP 06707293 A EP06707293 A EP 06707293A EP 1868457 A1 EP1868457 A1 EP 1868457A1
Authority
EP
European Patent Office
Prior art keywords
fibers
tobacco smoke
smoke filter
adsorbent
regenerated cellulose
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.)
Withdrawn
Application number
EP06707293A
Other languages
German (de)
French (fr)
Inventor
Ludwig Riepert
Gunther Peters
Ragna Ortlepp
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.)
Reemtsma Cigarettenfabriken GmbH
HF and PhF Reemtsma GmbH and Co
Original Assignee
Reemtsma Cigarettenfabriken GmbH
HF and PhF Reemtsma GmbH and Co
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 Reemtsma Cigarettenfabriken GmbH, HF and PhF Reemtsma GmbH and Co filed Critical Reemtsma Cigarettenfabriken GmbH
Publication of EP1868457A1 publication Critical patent/EP1868457A1/en
Withdrawn legal-status Critical Current

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
    • A24D3/06—Use of materials for tobacco smoke filters
    • A24D3/16—Use of materials for tobacco smoke filters of inorganic 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
    • A24D3/08—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

Definitions

  • the invention relates to a tobacco smoke filter and a smoking product with such a tobacco smoke filter.
  • tobacco smoke filters are used which, to increase the efficacy of adsorbents such as e.g. May contain activated carbon.
  • EP 0 532 329 A2 discloses a cigarette with a paper filter into which activated carbon has been introduced in the papermaking process.
  • EP 1 028 637 A1 discloses a tissue filter comprising activated carbon-containing paper.
  • EP 1 223 821 A1 describes a triple filter with three filter segments.
  • One of the segments is one with an active coal mixture filled Adsorberhimmmer, while a second segment contains activated carbon in a carbonized fabric (carbon cloth).
  • the manufacturing process for this filter material is complex and expensive, and the material is very difficult to bring into a usable form for a filter.
  • DE 199 17 614 A1 discloses a process for producing cellulosic shaped bodies, in particular fibers, which have a high adsorption capacity for polar molecules.
  • cellulose is dissolved in a water-containing tertiary amine oxide by a dry-wet extrusion process and extruded.
  • the solution is subjected to ion exchange, e.g. based on polystyrene or polyacrylate resin.
  • ion exchange e.g. based on polystyrene or polyacrylate resin.
  • a similar method is known from DE 100 53 359 A1.
  • neutral adsorbers such as activated carbon, carbonized styrene-divinyl copolymers, molecular sieves from the group of zeolites or silica gel are used to achieve adsorption of nonpolar molecules.
  • the fibers can be processed into papers, staple fibers or continuous fibers and used in smoke filters.
  • Lyocell fibers have already been used in cigarette filters.
  • WO 95/35044 A1 discloses cigarette filters with lyocell staple fibers, WO 95/24520 Al cigarette filters with crimped lyocell fibers, EP 0 731 651 A1 paper cigarette filters comprising lyocell fibers, and WO 95/35043 A1 Cigarettenfilter with entangled continuous lyocell filaments.
  • the illustrated tobacco smoke filters are cellulose-containing and therefore superior to the widespread cellulose acetate filters in terms of environmental friendliness and biodegradability.
  • the tobacco smoke filter according to the invention contains fibers which have regenerated cellulose (preferably lyocell fibers, viscose fibers and / or modal fibers) into which adsorbents have been introduced. According to the invention, more than one adsorbent is introduced into the fibers of the tobacco smoke filter and / or the tobacco smoke filter contains adsorbent between the fibers.
  • regenerated cellulose preferably lyocell fibers, viscose fibers and / or modal fibers
  • the tobacco smoke filter according to the invention allows a high loading with adsorbent, because on the one hand the regenerated cellulose fibers contain one adsorbent or more adsorbents and on the other hand adsorbent can also be provided between the fibers of the tobacco smoke filter. Because that's in the fibers introduced adsorbent is bound to the fibers, it is not released when handling the tobacco smoke filter as unwanted dust. If the amount of adsorbent between the fibers does not exceed a practical limit, the tobacco smoke filter will also hold the adsorbent between the fibers without causing soiling. On the other hand, if one were to try to introduce the entire amount of adsorbent which the tobacco smoke filter according to the invention can absorb between the fibers, adsorbent would trickle out during the handling of the tobacco smoke filter.
  • the invention also enables an optimal mixture or combination of selective adsorbents, as the adsorbents may be introduced in various ways bakrauchfilter in the TA (in the fibers, Zvi ⁇ rule the fibers).
  • bakrauchfilter in the TA
  • Zvi in the fibers
  • an improved reduction of the smoke components can be achieved.
  • the adsorption capacity (effectiveness) of the adsorbents is not permanently influenced by the production process of the fibers with regenerated cellulose, that is to say by the embedding in the fibers.
  • the regenerated cellulose fibers are preferably obtained from beech, hemp and / or flax fibers.
  • Regenerated cellulose e.g., lyocell
  • regenerated cellulose is environmentally friendly in the manufacturing process as compared to the cellulose acetate most commonly used in conventional filters.
  • the biodegradability of regenerated cellulose is also significantly better than that of cellulose acetate.
  • the tobacco smoke filter according to the invention is less expensive and less expensive to produce than conventional filters heavily loaded with adsorbents, for example the triple filter known from EP 1 223 821 A1.
  • the invention opens numerous possibilities to provide the tobacco smoke filter with different adsorbents.
  • two or more different types of adsorbents may be incorporated into the same type of regenerated cellulose fiber.
  • Mixed forms are also conceivable.
  • the tobacco smoke filter between the fibers can contain adsorbent, as already explained, wherein a mixture of adsorbents is possible.
  • the regenerated cellulose fibers may be in different forms in the tobacco smoke filter, e.g. as staple fibers or continuous fibers, but also already solidified in the form of nonwovens, fabrics or papers. Mixed forms are also possible.
  • Suitable adsorbents are numerous substances or classes of substances, e.g. Activated carbon, aluminum oxides, aluminum hydroxides, mixtures of aluminum oxide and silicon dioxide, aluminosilicates in oxide and / or hydroxide form, magnesium silicates, hydrotalcite, ion exchangers, ion exchange resins, molecular sieves, silica gels, natural minerals, synthetic minerals, clays, zeolites, bentonites, kieselguhr, meerschaum , Superadsorbentien and mixtures of such substances.
  • Superadsorbents (SAP) are polyacrylates, carbonated polyacrylates and starch-based adsorbents. Among others, aluminosilicates in oxide and / or hydroxide form are particularly preferred.
  • At least one smoke-influencing agent is present in fibers with regenerated cellulose.
  • the additive introduced are eg flavors, vitamins, catalysts or free-radical scavengers.
  • regenerated cellulose provides a simple way to equip the fibers in the preparation with the desired additives or the desired.
  • the tobacco smoke filter contains at least two nonwoven webs with regenerated cellulose fibers, the webs in the regenerated cellulose fibers having at least two different adsorbents.
  • the fleeces are preferably interconnected, e.g. by embossing, needling or water jet compression ("Hydroentangling").
  • at least one adsorbent may be present between the fibers in at least one of the nonwovens and / or between nonwoven layers.
  • the tobacco smoke filter comprises paper with a regenerated cellulose fibers in the paper raw material, wherein inserted in the fibers ⁇ adsorbent is introduced.
  • the paper may also be made with additional adsorbent in the pulp.
  • the tobacco smoke filter paper which contains as paper stock with at least one adsorbent loaded lyocell, preferably up to 75 wt .-% lyocell, based on the finished paper.
  • the lyocell fiber preferably contains up to 50% by weight of adsorbent.
  • the proportion of adsorbent, based on the total mass of the tobacco smoke filter, is preferably in the range of 20 wt .-% to 90 wt .-% or in the range of 50 wt .-% to 90 wt .-% and particularly preferably in the range of 50 Wt .-% to 70 wt .-%, whereby a high loading of the tobacco smoke filter is achieved with adsorbent.
  • the tobacco smoke filter contains only one segment, this segment has the features previously discussed.
  • Tobacco smoke filters with multiple segments according to the invention are also conceivable. In this case, at least one of the segments has the explained features; In addition, segments of conventional type may be present. Preferably, the segments have a common enclosure.
  • the tobacco smoke filter has an enclosure.
  • tobacco smoke filters according to the invention in non-enveloped form (for example with the addition of glue or refractory fiber portion (bicomponent fibers)) and e.g. to surround with paper only during assembly with cigarette strings.
  • cigarettes and cigarillos come into consideration.
  • paper sleeves which are provided at one end with a tobacco smoke filter according to the invention and in which cut tobacco can be introduced from the other end.
  • Lyocell fibers can be produced by the process described in DE 199 17 614 A1 and DE 100 53 359 A1 and in the process be loaded with adsorbent.
  • a staple fiber mixture consisting in equal parts of (a) lyocell staple fibers with a fiber length of about 6 mm, loaded with 50% by weight of "Siralox 40" (an alumosilicate sold by Sasol Ltd.), and (b) lyocell staple fibers having a fiber length of about 6 mm and loaded with 50% by weight HY zeolite , according to the method described in EP 1 354 522 A2, activated carbon granules were additionally added in an amount of 10 mg per mm filter length. After mixing in the air stream, a filter body of 7.8 mm in diameter was formed from this. Subsequently, the filter body was wrapped in paper and cut to filter rod length of 90 mm. The grain size of the activated carbon granules was 30 to 70 US mesh, which corresponds to a grain diameter of about 0.2 mm to 0.6 mm. The total charge of adsorbent in the filter was 17.5 mg per mm of filter length.
  • Two nonwovens were made from loaded lyocell staple fibers.
  • a nonwoven contained an adsorber load of 50% by weight "Siralox 40" (Sasol Ltd.) in the lyocell fibers used to make it.
  • the other nonwoven contained a load of 50 wt% HY zeolite in its fibers. After adding activated carbon granules to one of the two nonwoven layers, the two nonwovens were connected to one another by needling.
  • the composite material of the needled nonwovens was pleated on a paper filter machine from Burghart (Engl. "Embossed”, that is folded longitudinally) and formed into a filter body, which was then wrapped with paper and cut to pieces of Filterstabus.
  • the total charge of adsorbent in the filter was 17.5 mg per mm of filter length.
  • Lyocell staple fibers were loaded with 50% by weight of "Siralox 40" (Sasol Ltd.) and used as stock. Here, 75% of the pulp was represented by loaded lyocell fibers. In the further papermaking, 50% by weight activated carbon powder was added to the pulp. The paper produced in this way had a total adsorbent content of at least 60% by weight.
  • This paper was pleated on a Burghart paper filter machine ("embossed”, ie longitudinally folded) and formed into a filter body, which was then wrapped in paper and cut into pieces of filter rod length.
  • Such papers with lyocell staple fibers (proportion up to 75% loaded lyocell staple fiber, based on the total mass of the paper), which are loaded with up to 50 wt .-% adsorbent (also eg with activated carbon), achieve a particularly high total content of adsorbent (namely up to 70 wt .-% of adsorbent, eg activated carbon, based on the total mass of the paper), if - as in the example - the pulp adsorbent is added (eg up to 50 wt .-% activated carbon powder) ver).
  • Advantages are increased adsorbent content and increased condensate retention due to fibrillated lyocell fibers.
  • Lyocell staple fibers were coated with 50 wt% adsorbent ("Siralox

Landscapes

  • Chemical & Material Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Materials Engineering (AREA)
  • Inorganic Chemistry (AREA)
  • Cigarettes, Filters, And Manufacturing Of Filters (AREA)

Abstract

The invention relates to a tabacco smoke filter which contains fibres which comprise regenerated cellulose (e.g. Lyocell) and an absorbent is introduced therein. More than one absorbent is introduced into the fibres of the tabacco smoke filter and/or the tabacco smoke filter contains an absorbent between said fibres. A higher charge of the absorbent can be obtained by means of said type of tabacco smoke filter.

Description

Tabakrauchfilter Tobacco smoke filter
Die Erfindung betrifft einen Tabakrauchfilter sowie ein Rauch- produkt mit einem derartigen Tabakrauchfilter.The invention relates to a tobacco smoke filter and a smoking product with such a tobacco smoke filter.
Um Inhaltsstoffe aus dem Hauptstromrauch von Rauchprodukten wie Cigaretten oder Cigarillos zu entfernen, werden Tabakrauchfilter benutzt, die zur Erhöhung der Wirksamkeit Adsor- bentien wie z.B. Aktivkohle enthalten können.In order to remove constituents from the mainstream smoke of smoking products such as cigarettes or cigarillos, tobacco smoke filters are used which, to increase the efficacy of adsorbents such as e.g. May contain activated carbon.
So offenbart die EP 0 532 329 A2 eine Cigarette mit einem Papierfilter, in den im Papierherstellungsprozess Aktivkohle eingebracht wurde. Aus der EP 1 028 637 Al ist ein Tissuefil- ter bekannt, der aktivkohlehaltiges Papier aufweist.Thus, EP 0 532 329 A2 discloses a cigarette with a paper filter into which activated carbon has been introduced in the papermaking process. EP 1 028 637 A1 discloses a tissue filter comprising activated carbon-containing paper.
Die EP 1 223 821 Al beschreibt einen Dreifachfilter mit drei Filtersegmenten. Eines der Segmente ist eine mit einem Aktiv- kohlegemisch gefüllte Adsorberkämmer, während ein zweites Segment Aktivkohle in einem carbonisierten Gewebe (Carbon Cloth) enthält. Der Herstellungsprozess für dieses Filtermaterial ist aufwendig und teuer, und das Material ist nur sehr schwer in eine für einen Filter brauchbare Form zu bringen.EP 1 223 821 A1 describes a triple filter with three filter segments. One of the segments is one with an active coal mixture filled Adsorberkämmer, while a second segment contains activated carbon in a carbonized fabric (carbon cloth). The manufacturing process for this filter material is complex and expensive, and the material is very difficult to bring into a usable form for a filter.
Die DE 199 17 614 Al offenbart ein Verfahren zum Herstellen cellulosischer Formkörper, insbesondere Fasern, die ein hohes Adsorptionsvermögen für polare Moleküle besitzen. Dabei wird nach einem sogenannten Trocken-Nass-Extrusionsverfahren Cellu- lose in einem wasserhaltigen tertiären Aminoxid gelöst und ex- trudiert. Um die gewünschten Adsorptionseigenschaften zu erhalten, werden der Lösung Ionenaustauscher, z.B. auf Polystyrol- oder Polyacrylatharzbasis, zugesetzt. Ein ähnliches Ver- fahren ist aus der DE 100 53 359 Al bekannt. In diesem Fall werden Neutraladsorber wie Aktivkohle, carbonisierte Styrol- Divinyl-Copolymerisate, Molekularsiebe aus der Gruppe der Zeo- lithe oder Kieselgel verwendet, um eine Adsorption von unpolaren Molekülen zu erreichen. Die Fasern können zu Papieren, Stapelfasern oder Endlosfasern verarbeitet und in Rauchfiltern eingesetzt werden.DE 199 17 614 A1 discloses a process for producing cellulosic shaped bodies, in particular fibers, which have a high adsorption capacity for polar molecules. In this process, cellulose is dissolved in a water-containing tertiary amine oxide by a dry-wet extrusion process and extruded. In order to obtain the desired adsorption properties, the solution is subjected to ion exchange, e.g. based on polystyrene or polyacrylate resin. A similar method is known from DE 100 53 359 A1. In this case, neutral adsorbers such as activated carbon, carbonized styrene-divinyl copolymers, molecular sieves from the group of zeolites or silica gel are used to achieve adsorption of nonpolar molecules. The fibers can be processed into papers, staple fibers or continuous fibers and used in smoke filters.
Trocken-Nass-Extrusionsverfahren (Lösungsmittel-Spinnverfahren) zur Herstellung cellulosischer Fasern oder Filamente sind schon lange bekannt. So beschreibt die US 4 246 221 die Herstellung von "Lyocell"-Fasern. Ähnliche extrudierte Fasern auf Cellulosebasis sind unter den Namen "Viskose" und "Modal" bekannt. Im Folgenden werden derartige Cellulosematerialien auch als "regenerierte Cellulose" bezeichnet.Dry-wet extrusion processes (solvent spinning processes) for producing cellulosic fibers or filaments have been known for a long time. Thus, US Pat. No. 4,246,221 describes the production of "lyocell" fibers. Similar extruded cellulosic fibers are known under the names "Viscose" and "Modal". In the following, such cellulosic materials are also referred to as "regenerated cellulose".
Lyocell-Fasern wurden bereits in Cigarettenfiltern verwendet. Die WO 95/35044 Al offenbart Cigarettenfilter mit Lyocell- Stapelfasern, die WO 95/24520 Al Cigarettenfilter mit gekrimpten Lyocell-Fasern, die EP 0 731 651 Al Cigarettenfilter mit Papier, das Lyocell-Fasern aufweist, und die WO 95/35043 Al Cigarettenfilter mit verwickelten kontinuierlichen Lyocell- Filamenten.Lyocell fibers have already been used in cigarette filters. WO 95/35044 A1 discloses cigarette filters with lyocell staple fibers, WO 95/24520 Al cigarette filters with crimped lyocell fibers, EP 0 731 651 A1 paper cigarette filters comprising lyocell fibers, and WO 95/35043 A1 Cigarettenfilter with entangled continuous lyocell filaments.
Die erläuterten Tabakrauchfilter sind cellulosehaltig und da- her den weit verbreiteten Celluloseacetatfiltern im Hinblick auf Umweltfreundlichkeit und biologische Abbaubarkeit überlegen.The illustrated tobacco smoke filters are cellulose-containing and therefore superior to the widespread cellulose acetate filters in terms of environmental friendliness and biodegradability.
Wenn derartige Filter Adsorber enthalten, ist jedoch die Auf- nahmefähigkeit für den Adsorber begrenzt oder der Herstel- lungsprozess ist aufwendig und teuer.If such filters contain adsorbers, however, the adsorption capacity for the adsorber is limited or the production process is complicated and expensive.
Es ist Aufgabe der Erfindung, einen cellulosehaltigen Tabakrauchfilter mit hoher Adsorberladung zu schaffen, der eine verbesserte Reduktion der Rauchbestandteile bewirkt, ohne in der Herstellung aufwendig und teuer zu sein.It is an object of the invention to provide a cellulosic tobacco smoke filter with high adsorber charge, which causes an improved reduction of the smoke constituents, without being expensive and expensive to manufacture.
Diese Aufgabe wird gelöst durch einen Tabakrauchfilter mit den Merkmalen des Anspruchs 1. Der Anspruch 14 betrifft ein Rauch- produkt mit einem derartigen Tabakrauchfilter. Vorteilhafte Ausgestaltungen der Erfindung ergeben sich aus den übrigen Ansprüchen.This object is achieved by a tobacco smoke filter with the features of claim 1. The claim 14 relates to a smoking product with such a tobacco smoke filter. Advantageous embodiments of the invention will become apparent from the other claims.
Der erfindungsgemäße Tabakrauchfilter enthält Fasern, die re- generierte Cellulose aufweisen (vorzugsweise Lyocell-Fasern, Viskose-Fasern und/oder Modal-Fasern) , in die Adsorbens eingebracht ist. Erfindungsgemäß ist in die Fasern des Tabakrauchfilters mehr als ein Adsorbens eingebracht und/oder der Tabakrauchfilter enthält zwischen den Fasern Adsorbens.The tobacco smoke filter according to the invention contains fibers which have regenerated cellulose (preferably lyocell fibers, viscose fibers and / or modal fibers) into which adsorbents have been introduced. According to the invention, more than one adsorbent is introduced into the fibers of the tobacco smoke filter and / or the tobacco smoke filter contains adsorbent between the fibers.
Der erfindungsgemäße Tabakrauchfilter ermöglicht eine hohe Beladung mit Adsorbens, denn einerseits enthalten die Fasern mit regenerierter Cellulose ein Adsorbens oder mehrere Adsorbenti- en und andererseits kann auch zwischen den Fasern des Tabak- rauchfilters Adsorbens vorgesehen sein. Da das in die Fasern eingebrachte Adsorbens an den Fasern gebunden ist, wird es bei der Handhabung des Tabakrauchfilters nicht als unerwünschter Staub freigesetzt. Sofern die Menge an Adsorbens zwischen den Fasern einen von der Praxis bestimmten Grenzwert nicht über- schreitet, hält der Tabakrauchfilter auch das Adsorbens zwischen den Fasern, ohne dass Verschmutzungen auftreten. Würde man dagegen versuchen, die gesamte Menge an Adsorbens, die der erfindungsgemäße Tabakrauchfilter aufnehmen kann, zwischen den Fasern einzubringen, würde Adsorbens bei der Handhabung des Tabakrauchfilters herausrieseln.The tobacco smoke filter according to the invention allows a high loading with adsorbent, because on the one hand the regenerated cellulose fibers contain one adsorbent or more adsorbents and on the other hand adsorbent can also be provided between the fibers of the tobacco smoke filter. Because that's in the fibers introduced adsorbent is bound to the fibers, it is not released when handling the tobacco smoke filter as unwanted dust. If the amount of adsorbent between the fibers does not exceed a practical limit, the tobacco smoke filter will also hold the adsorbent between the fibers without causing soiling. On the other hand, if one were to try to introduce the entire amount of adsorbent which the tobacco smoke filter according to the invention can absorb between the fibers, adsorbent would trickle out during the handling of the tobacco smoke filter.
Neben einer hohen Adsorberladung ermöglicht die Erfindung auch eine optimale Mischung bzw. Kombination von selektiven Adsor- bentien, da die Adsorbentien auf verschiedene Weise in den Ta- bakrauchfilter eingebracht werden können (in den Fasern, zwi¬ schen den Fasern) . Damit kann eine verbesserte Reduktion der Rauchbestandteile erreicht werden. Überraschenderweise hat es sich gezeigt, dass die Adsorptionskapazität (Wirksamkeit) der Adsorbentien durch den Herstellungsprozess der Fasern mit re- generierter Cellulose, also durch die Einbettung in die Fasern, nicht nachhaltig beeinflusst wird.In addition to high Adsorberladung the invention also enables an optimal mixture or combination of selective adsorbents, as the adsorbents may be introduced in various ways bakrauchfilter in the TA (in the fibers, Zvi ¬ rule the fibers). Thus, an improved reduction of the smoke components can be achieved. Surprisingly, it has been shown that the adsorption capacity (effectiveness) of the adsorbents is not permanently influenced by the production process of the fibers with regenerated cellulose, that is to say by the embedding in the fibers.
Die Fasern mit regenerierter Cellulose werden vorzugsweise aus Buchenholz-, Hanf- und/oder Flachsfasern gewonnen.The regenerated cellulose fibers are preferably obtained from beech, hemp and / or flax fibers.
Im Vergleich zu dem in herkömmlichen Filtern meist verwendeten Celluloseacetat ist regenerierte Cellulose (z.B. Lyocell) im Herstellungsprozess umweltfreundlich. Auch die biologische Ab- baubarkeit der regenerierten Cellulose ist deutlich besser als die von Celluloseacetat.Regenerated cellulose (e.g., lyocell) is environmentally friendly in the manufacturing process as compared to the cellulose acetate most commonly used in conventional filters. The biodegradability of regenerated cellulose is also significantly better than that of cellulose acetate.
Der erfindungsgemäße Tabakrauchfilter ist in der Herstellung weniger aufwendig und preisgünstiger als hoch mit Adsorbentien beladene herkömmliche Filter, z.B. der aus der EP 1 223 821 Al bekannte Dreifachfilter. Die Erfindung eröffnet zahlreiche Möglichkeiten, den Tabakrauchfilter mit verschiedenen Adsorbentien zu versehen. So können in dieselbe Art von Faser mit regenerierter Cellulose zwei oder mehr verschiedene Arten von Adsorbentien eingebracht sein. Es ist auch möglich, verschiedene Arten von Adsorbentien in unterschiedlichen Fasern mit regenerierter Cellulose vorzusehen, also z.B. Lyocell-Fasern, die mit einer Art von Adsor- bens hergestellt sind und Lyoce.ll-Fasern, die mit einer ande- ren Art von Adsorbens hergestellt sind. Mischformen sind ebenfalls denkbar. Darüber hinaus kann der Tabakrauchfilter zwischen den Fasern Adsorbens enthalten, wie bereits erläutert, wobei auch eine Mischung von Adsorbentien möglich ist.The tobacco smoke filter according to the invention is less expensive and less expensive to produce than conventional filters heavily loaded with adsorbents, for example the triple filter known from EP 1 223 821 A1. The invention opens numerous possibilities to provide the tobacco smoke filter with different adsorbents. Thus, two or more different types of adsorbents may be incorporated into the same type of regenerated cellulose fiber. It is also possible to provide different types of adsorbents in different regenerated cellulose fibers, eg lyocell fibers made with one type of adsorbent and Lyoce.ll fibers made with another type of adsorbent are. Mixed forms are also conceivable. In addition, the tobacco smoke filter between the fibers can contain adsorbent, as already explained, wherein a mixture of adsorbents is possible.
Die Fasern mit regenerierter Cellulose können in dem Tabakrauchfilter in unterschiedlichen Formen vorliegen, z.B. als Stapelfasern oder Endlosfasern, aber auch bereits verfestigt in Form von Vliesen, Geweben oder Papieren. Mischformen sind ebenfalls möglich.The regenerated cellulose fibers may be in different forms in the tobacco smoke filter, e.g. as staple fibers or continuous fibers, but also already solidified in the form of nonwovens, fabrics or papers. Mixed forms are also possible.
Als Adsorbentien kommen zahlreiche Substanzen oder Substanzklassen in Betracht, z.B. Aktivkohlen, Aluminiumoxide, Aluminiumhydroxide, Mischungen aus Aluminiumoxid und Siliziumdioxid, Alumosilikate in Oxid- und/oder Hydroxidform, Magnesium- silikate, Hydrotalcit, Ionenaustauscher, Ionenaustauscherharze, Molekularsiebe, Silikagele, natürliche Mineralien, synthetische Mineralien, Tonerden, Zeolithe, Bentonite, Kieselgur, Meerschaum, Superadsorbentien sowie Mischungen derartiger Substanzen. Unter Superadsorbentien (SAP) versteht man Polyacry- late, carbonisierte Polyacrylate sowie Adsorbentien auf Stärkebasis. Besonders bevorzugt sind unter anderem Alumosilikate in Oxid- und/oder Hydroxidform.Suitable adsorbents are numerous substances or classes of substances, e.g. Activated carbon, aluminum oxides, aluminum hydroxides, mixtures of aluminum oxide and silicon dioxide, aluminosilicates in oxide and / or hydroxide form, magnesium silicates, hydrotalcite, ion exchangers, ion exchange resins, molecular sieves, silica gels, natural minerals, synthetic minerals, clays, zeolites, bentonites, kieselguhr, meerschaum , Superadsorbentien and mixtures of such substances. Superadsorbents (SAP) are polyacrylates, carbonated polyacrylates and starch-based adsorbents. Among others, aluminosilicates in oxide and / or hydroxide form are particularly preferred.
In vorteilhaften Ausführungsformen der Erfindung ist in Fasern mit regenerierter Cellulose mindestens ein rauchbeeinflussen- der Zusatzstoff eingebracht. Als Zusatzstoffe kommen z.B. FIa- vourstoffe, Vitamine, Katalysatoren oder Radikalfänger in Betracht. Die Verwendung von regenerierter Cellulose eröffnet auf einfache Weise die Möglichkeit, die Fasern bei der Her- Stellung mit dem oder den gewünschten Zusatzstoffen auszurüsten.In advantageous embodiments of the invention, at least one smoke-influencing agent is present in fibers with regenerated cellulose. the additive introduced. Suitable additives are eg flavors, vitamins, catalysts or free-radical scavengers. The use of regenerated cellulose provides a simple way to equip the fibers in the preparation with the desired additives or the desired.
Bei einer bevorzugten Ausführungsform enthält der Tabakrauchfilter mindestens zwei Vliese mit Fasern mit regenerierter Cellulose, wobei die Vliese in den Fasern mit regenerierter Cellulose mindestens zwei unterschiedliche Adsorbentien aufweisen. Dabei sind die Vliese vorzugsweise untereinander verbunden, z.B. durch Prägen, Vernadeln oder Wasserstrahlverdichtung ( "Hydroentangling") . Zusätzlich kann zwischen den Fasern in mindestens einem der Vliese und/oder zwischen Vlieslagen mindestens ein Adsorbens enthalten sein.In a preferred embodiment, the tobacco smoke filter contains at least two nonwoven webs with regenerated cellulose fibers, the webs in the regenerated cellulose fibers having at least two different adsorbents. The fleeces are preferably interconnected, e.g. by embossing, needling or water jet compression ("Hydroentangling"). In addition, at least one adsorbent may be present between the fibers in at least one of the nonwovens and / or between nonwoven layers.
Bei einer anderen bevorzugten Ausführungsform weist der Tabakrauchfilter ein Papier mit Fasern mit regenerierter Cellulose im Papierrohstoff auf, wobei in die Fasern Adsorbens einge¬ bracht ist. Das Papier kann ferner mit zusätzlichem Adsorbens in der Pulpe hergestellt sein.In another preferred embodiment, the tobacco smoke filter comprises paper with a regenerated cellulose fibers in the paper raw material, wherein inserted in the fibers ¬ adsorbent is introduced. The paper may also be made with additional adsorbent in the pulp.
Bei einer Variante weist der Tabakrauchfilter Papier auf, das als Papierrohstoff mit mindestens einem Adsorbens beladenes Lyocell enthält, vorzugsweise bis zu 75 Gew.-% Lyocell, bezogen auf das fertige Papier. Dabei enthält die Lyocellfaser vorzugsweise bis zu 50 Gew.-% an Adsorbens.In one variant, the tobacco smoke filter paper, which contains as paper stock with at least one adsorbent loaded lyocell, preferably up to 75 wt .-% lyocell, based on the finished paper. The lyocell fiber preferably contains up to 50% by weight of adsorbent.
Der Anteil an Adsorbens, bezogen auf die Gesamtmasse des Tabakrauchfilters, liegt vorzugsweise im Bereich von 20 Gew.-% bis 90 Gew.-% oder im Bereich von 50 Gew.-% bis 90 Gew.-% und besonders bevorzugt im Bereich von 50 Gew.-% bis 70 Gew.-%, womit eine hohe Beladung des Tabakrauchfilters mit Adsorbens erreicht wird. Wenn der Tabakrauchfilter nur ein Segment enthält, hat dieses Segment die zuvor erläuterten Merkmale. Erfindungsgemäße Tabakrauchfilter mit mehreren Segmenten sind ebenfalls denkbar. In diesem Fall hat mindestens eines der Segmente die erläuterten Merkmale; zusätzlich können Segmente herkömmlicher Art vorhanden sein. Vorzugsweise besitzen die Segmente eine gemeinsame Umhüllung.The proportion of adsorbent, based on the total mass of the tobacco smoke filter, is preferably in the range of 20 wt .-% to 90 wt .-% or in the range of 50 wt .-% to 90 wt .-% and particularly preferably in the range of 50 Wt .-% to 70 wt .-%, whereby a high loading of the tobacco smoke filter is achieved with adsorbent. If the tobacco smoke filter contains only one segment, this segment has the features previously discussed. Tobacco smoke filters with multiple segments according to the invention are also conceivable. In this case, at least one of the segments has the explained features; In addition, segments of conventional type may be present. Preferably, the segments have a common enclosure.
Vorzugsweise hat der Tabakrauchfilter eine Umhüllung. Es ist aber auch denkbar, erfindungsgemäße Tabakrauchfilter in nicht- umhüllter Form herzustellen (z.B. unter Hinzufügung von Leim oder aufschmelzendem Faseranteil (Bikomponentfasern) ) und z.B. erst während des Zusammenfügens mit Cigarettensträngen mit ei- nein Papier zu umgeben.Preferably, the tobacco smoke filter has an enclosure. However, it is also conceivable to produce tobacco smoke filters according to the invention in non-enveloped form (for example with the addition of glue or refractory fiber portion (bicomponent fibers)) and e.g. to surround with paper only during assembly with cigarette strings.
Als Rauchprodukte, die mit dem erfindungsgemäßen Tabakrauchfilter ausgestattet werden, kommen insbesondere Cigaretten und Cigarillos in Betracht. Eine weitere Möglichkeit ist die An- wendung mit Papierhülsen, die an einem Ende mit einem erfindungsgemäßen Tabakrauchfilter versehen sind und in die vom anderen Ende her Schnitttabak eingeführt werden kann.As smoking products, which are equipped with the tobacco smoke filter according to the invention, in particular cigarettes and cigarillos come into consideration. Another possibility is the use of paper sleeves which are provided at one end with a tobacco smoke filter according to the invention and in which cut tobacco can be introduced from the other end.
Im Folgenden wird die Erfindung anhand von Ausführungsbeispie- len weiter erläutert.The invention will be further elucidated on the basis of exemplary embodiments.
Lyocell-Fasern können nach dem in der DE 199 17 614 Al und der DE 100 53 359 Al beschriebenen Verfahren hergestellt und dabei mit Adsorbens beladen werden.Lyocell fibers can be produced by the process described in DE 199 17 614 A1 and DE 100 53 359 A1 and in the process be loaded with adsorbent.
Beispiel 1example 1
Einer Stapelfasermischung, zu gleichen Teilen bestehend aus (a) Lyocell-Stapelfasern mit einer Faserlänge von ca. 6 mm, beladen mit 50 Gew.-% "Siralox 40" (einem v,on Sasol Ltd. vertriebenen Alumosilikat) , sowie (b) Lyocell-Stapelfasern mit einer Faserlänge von ca. 6 mm, beladen mit 50 Gew.-% Zeolith vom Typ HY, wurde nach dem in der EP 1 354 522 A2 beschriebe- nen Verfahren zusätzlich Aktivkohlegranulat in einer Menge von 10 mg pro mm Filterlänge zugegeben. Nach Mischung im Luftstrom wurde daraus ein Filterkörper von 7,8 mm Durchmesser geformt. Anschließend wurde der Filterkörper mit Papier umhüllt und auf Filterstablänge von 90 mm geschnitten. Die Korngröße des Ak- tivkohlegranulates betrug 30 bis 70 US mesh, was einem Korndurchmesser von etwa 0,2 mm bis 0,6 mm entspricht. Die Gesamtladung von Adsorbens im Filter betrug 17,5 mg pro mm Filterlänge .A staple fiber mixture consisting in equal parts of (a) lyocell staple fibers with a fiber length of about 6 mm, loaded with 50% by weight of "Siralox 40" (an alumosilicate sold by Sasol Ltd.), and (b) lyocell staple fibers having a fiber length of about 6 mm and loaded with 50% by weight HY zeolite , according to the method described in EP 1 354 522 A2, activated carbon granules were additionally added in an amount of 10 mg per mm filter length. After mixing in the air stream, a filter body of 7.8 mm in diameter was formed from this. Subsequently, the filter body was wrapped in paper and cut to filter rod length of 90 mm. The grain size of the activated carbon granules was 30 to 70 US mesh, which corresponds to a grain diameter of about 0.2 mm to 0.6 mm. The total charge of adsorbent in the filter was 17.5 mg per mm of filter length.
Beispiel 2Example 2
Aus geladenen Lyocell-Stapelfasern wurden zwei Vliese hergestellt. Ein Vlies enthielt eine Adsorberbeladung von 50 Gew. -% "Siralox 40" (Sasol Ltd.) in den zu seiner Herstellung verwendeten Lyocell-Fasern. Das andere Vlies enthielt eine Beladung mit 50 Gew.-% HY-Zeolith in seinen Fasern. Nach Zugabe von Aktivkohlegranulat auf eine der beiden Vlieslagen wurden die beiden Vliese durch Vernadelung miteinander verbunden.Two nonwovens were made from loaded lyocell staple fibers. A nonwoven contained an adsorber load of 50% by weight "Siralox 40" (Sasol Ltd.) in the lyocell fibers used to make it. The other nonwoven contained a load of 50 wt% HY zeolite in its fibers. After adding activated carbon granules to one of the two nonwoven layers, the two nonwovens were connected to one another by needling.
Das Verbundmaterial aus den vernadelten Vliesen wurde auf einer Papierfiltermaschine der Firma Burghart plissiert (engl, "embossed", das heißt in Längsrichtung gefaltet) und zu einem Filterkörper geformt, der anschließend mit Papier umhüllt und auf Stücke von Filterstablänge geschnitten wurde. Die Gesamtladung an Adsorbens im Filter betrug 17,5 mg pro mm Filterlänge. Beispiel 3The composite material of the needled nonwovens was pleated on a paper filter machine from Burghart (Engl. "Embossed", that is folded longitudinally) and formed into a filter body, which was then wrapped with paper and cut to pieces of Filterstablänge. The total charge of adsorbent in the filter was 17.5 mg per mm of filter length. Example 3
Lyocell-Stapelfasern wurden mit 50 Gew.-% "Siralox 40" (Sasol Ltd.) beladen und als Papierrohstoff eingesetzt. Hierbei wur- den 75% der Papiermasse durch beladene Lyocell-Fasern dargestellt. Bei der weiteren Papierherstellung wurden der Pulpe noch 50 Gew.-% Aktivkohlepulver zugegeben. Das auf diese Weise hergestellte Papier hatte einen Gesamtgehalt an Adsorbens von mindestens 60 Gew.-%.Lyocell staple fibers were loaded with 50% by weight of "Siralox 40" (Sasol Ltd.) and used as stock. Here, 75% of the pulp was represented by loaded lyocell fibers. In the further papermaking, 50% by weight activated carbon powder was added to the pulp. The paper produced in this way had a total adsorbent content of at least 60% by weight.
Dieses Papier wurde auf einer Papierfiltermaschine der Firma Burghart plissiert (engl, "embossed", das heißt in Längsrichtung gefaltet) und zu einem Filterkörper geformt, der anschließend mit Papier umhüllt und auf Stücke von Filterstab- länge geschnitten wurde.This paper was pleated on a Burghart paper filter machine ("embossed", ie longitudinally folded) and formed into a filter body, which was then wrapped in paper and cut into pieces of filter rod length.
Derartige Papiere (Tissue) mit Lyocell-Stapelfasern (Anteil bis zu 75% beladene Lyocell-Stapelfaser, bezogen auf die Gesamtmasse des Papiers), die mit bis zu 50 Gew.-% Adsorbens (auch z.B. mit Aktivkohle) beladen sind, erreichen einen besonders hohen Gesamtgehalt an Adsorbens (nämlich bis zu 70 Gew.-% an Adsorbens, z.B. Aktivkohle, bezogen auf die Gesamtmasse des Papiers) , wenn - wie im Beispiel - auch der Pulpe Adsorbens zugegeben wird (z.B. bis zu 50 Gew.-% Aktivkohlepul- ver) . Als Vorteile ergeben sich ein erhöhter Adsorbensgehalt und eine erhöhte Kondensatretention durch fibrillierte Lyocellfasern.Such papers (tissue) with lyocell staple fibers (proportion up to 75% loaded lyocell staple fiber, based on the total mass of the paper), which are loaded with up to 50 wt .-% adsorbent (also eg with activated carbon), achieve a particularly high total content of adsorbent (namely up to 70 wt .-% of adsorbent, eg activated carbon, based on the total mass of the paper), if - as in the example - the pulp adsorbent is added (eg up to 50 wt .-% activated carbon powder) ver). Advantages are increased adsorbent content and increased condensate retention due to fibrillated lyocell fibers.
Beispiel 4Example 4
Lyocell-Stapelfasern wurden mit 50 Gew.-% Adsorbens ("SiraloxLyocell staple fibers were coated with 50 wt% adsorbent ("Siralox
40" von Sasol Ltd. oder als Alternative Aktivkohle) beladen und als Papierrohstoff eingesetzt. Hierbei wurden 75% der Pa- piermasse durch beladene Lyocell-Fasern dargestellt. Das auf diese Weise hergestellte Papier hatte einen Gesamtgehalt an Adsorbens von 37,5 Gew.-%. Die weitere Verarbeitung des Papiers zu einem Filterkörper erfolgte wie im Beispiel 3. 40 "from Sasol Ltd. or, as an alternative, activated charcoal) and used as a paper raw material, where 75% of the paper mass was represented by loaded lyocell fibers this paper produced had a total content of adsorbent of 37.5 wt .-%. The further processing of the paper into a filter body was carried out as in Example 3.

Claims

Patentansprüche claims
1. Tabakrauchfilter, mit Fasern, die regenerierte Cellulose aufweisen und in die Adsorbens eingebracht ist, dadurch gekennzeichnet, dass in die Fasern des Tabakrauchfilters mehr als ein Adsorbens eingebracht ist und/oder dass der1. tobacco smoke filter, with fibers having regenerated cellulose and is introduced into the adsorbent, characterized in that in the fibers of the tobacco smoke filter more than one adsorbent is introduced and / or that of
Tabakrauchfilter zwischen den Fasern Adsorbens enthält.Tobacco smoke filter between the fibers adsorbent contains.
2. Tabakrauchfilter nach Anspruch 1, gekennzeichnet durch Fasern mit regenerierter Cellulose, in die mindestens zwei verschiedene Adsorbentien eingebracht sind.2. Tobacco smoke filter according to claim 1, characterized by fibers with regenerated cellulose, in which at least two different adsorbents are introduced.
3. Tabakrauchfilter nach Anspruch 1 oder 2, gekennzeichnet durch mindestens zwei verschiedene Adsorbentien, die in unterschiedliche Fasern mit regenerierter Cellulose eingebracht sind.3. Tobacco smoke filter according to claim 1 or 2, characterized by at least two different adsorbents, which are introduced into different fibers with regenerated cellulose.
4. Tabakrauchfilter nach einem der Ansprüche 1 bis 3, dadurch gekennzeichnet, dass die Fasern mit regenerierter Cellulo¬ se mindestens eine der aus der folgenden Liste ausgewählten Faserarten aufweisen: Lyocell-Fasern, Viskose-Fasern, Modal-Fasern.4. A tobacco smoke filter according to any one of claims 1 to 3, characterized in that the fibers with regenerated ¬ Cellulo se comprise at least one of the selected types of fibers from the following list: lyocell fibers, viscose fibers, modal fibers.
5. Tabakrauchfilter nach einem der Ansprüche 1 bis 4, dadurch gekennzeichnet, dass die Fasern mit regenerierter Cellulose in dem Tabakrauchfilter in mindestens einer der aus der folgenden Liste ausgewählten Formen vorliegen: Stapelfasern, Endlosfasern, Vliese, Papiere, Gewebe.The tobacco smoke filter according to any one of claims 1 to 4, characterized in that the regenerated cellulose fibers are present in the tobacco smoke filter in at least one of the following forms selected from the following list: staple fibers, continuous filaments, nonwovens, papers, fabrics.
6. Tabakrauchfilter nach einem der 1 bis 5, .dadurch gekennzeichnet, dass die Adsorbentien mindestens eine der aus der. folgenden Liste ausgewählten Substanzen aufweisen: Aktivkohlen, Aluminiumoxide, Aluminiumhydroxide, Mischungen aus Aluminiumoxid und Siliziumdioxid, Alumosilikate in Oxid- und/oder Hydroxidform, Magnesiumsilikate, Hydrotalcit, Ionenaustauscher, Ionenaustauscherharze, Molekularsiebe, Silikagele, natürliche Mineralien, synthetische Mineralien, Tonerden, Zeolithe, Bentonite, Kieselgur, Meer- schäum, Superadsorbentien.6. The tobacco smoke filter according to one of the 1 to 5, .Dadurch in that the adsorbents at least one of the. Activated carbons, aluminum oxides, aluminum hydroxides, mixtures of aluminum oxide and silicon dioxide, aluminosilicates in Oxide and / or hydroxide form, magnesium silicates, hydrotalcite, ion exchangers, ion exchange resins, molecular sieves, silica gels, natural minerals, synthetic minerals, clays, zeolites, bentonites, diatomaceous earth, sea foam, superadsorbents.
7. Tabakrauchfilter nach einem der Ansprüche 1 bis 6, gekennzeichnet durch Fasern mit regenerierter Cellulose, in die mindestens ein rauchbeeinflussender Zusatzstoff einge- bracht ist, wobei die Zusatzstoffe vorzugsweise mindestens eine der aus der folgenden Liste ausgewählten Substanzen aufweisen: Flavourstoffe, Vitamine, Katalysatoren, Radikalfänger.7. A tobacco smoke filter according to any one of claims 1 to 6, characterized by fibers with regenerated cellulose, in which at least one smoke-influencing additive introduced introduced, wherein the additives preferably at least one of the selected substances from the following list have: flavors, vitamins, catalysts, radical scavengers.
8. Tabakrauchfilter nach einem der Ansprüche 1 bis 7, gekennzeichnet durch mindestens zwei Vliese mit Fasern mit regenerierter Cellulose, wobei die Vliese in den Fasern mit regenerierter Cellulose mindestens zwei unterschiedliche Adsorbentien aufweisen und wobei vorzugsweise die Vliese untereinander verbunden sind.8. Tobacco smoke filter according to one of claims 1 to 7, characterized by at least two nonwovens with fibers with regenerated cellulose, wherein the nonwovens in the fibers with regenerated cellulose have at least two different adsorbents and wherein preferably the nonwovens are interconnected.
9. Tabakrauchfilter nach Anspruch 8, dadurch gekennzeichnet, dass zwischen den Fasern in mindestens einem der Vliese und/oder zwischen Vlieslagen mindestens ein Adsorbens ent- halten ist.9. The tobacco smoke filter as claimed in claim 8, wherein at least one adsorbent is contained between the fibers in at least one of the nonwovens and / or between nonwoven layers.
10. Tabakrauchfilter nach einem der Ansprüche 1 bis I1 gekennzeichnet durch ein Papier mit Fasern mit regenerierter Cellulose im Papierrohstoff, in die Adsorbens eingebracht ist, wobei das Papier vorzugsweise mit zusätzlichem Adsorbens in der Pulpe hergestellt ist.10. Tobacco smoke filter according to one of claims 1 to I 1 characterized by a paper with fibers with regenerated cellulose in the paper stock, is introduced into the adsorbent, wherein the paper is preferably made with additional adsorbent in the pulp.
11. Tabakrauchfilter, der Papier aufweist, das als Papierrohstoff mit mindestens einem Adsorbens beladenes Lyocell enthält, vorzugsweise bis zu 75 Gew.-% Lyocell, bezogen auf das fertige Papier.11. Tobacco smoke filter comprising paper containing as paper stock with at least one adsorbent loaded lyocell contains, preferably up to 75 wt .-% lyocell, based on the finished paper.
12. Tabakrauchfilter nach einem der Ansprüche 1 bis 11, da- durch gekennzeichnet, dass der Anteil an Adsorbens, bezogen auf die Gesamtmasse des Tabakrauchfilters, im Bereich von 20 Gew.-% bis 90 Gew.-% liegt, vorzugsweise im Bereich von 50 Gew.-% bis 90 Gew.-%, besonders bevorzugt im Bereich von 50 Gew.-% bis 70 Gew.-%.12. Tobacco smoke filter according to one of claims 1 to 11, character- ized in that the proportion of adsorbent, based on the total mass of the tobacco smoke filter, in the range of 20 wt .-% to 90 wt .-%, preferably in the range of 50 Wt .-% to 90 wt .-%, particularly preferably in the range of 50 wt .-% to 70 wt .-%.
13. Tabakrauchfilter, gekennzeichnet durch mehrere Segmente, wobei mindestens eines der Segmente die Merkmale nach einem der Ansprüche 1 bis 12 hat und wobei die Segmente vorzugsweise eine gemeinsame Umhüllung haben.13. A tobacco smoke filter, characterized by a plurality of segments, wherein at least one of the segments has the features of any one of claims 1 to 12 and wherein the segments preferably have a common enclosure.
14. Rauchprodukt, gekennzeichnet durch einen Tabakrauchfilter nach einem der Ansprüche 1 bis 13. ■14. smoking product, characterized by a tobacco smoke filter according to one of claims 1 to 13. ■
15. Rauchprodukt nach Anspruch 14, dadurch gekennzeichnet, dass das Rauchprodukt aus der folgenden Gruppe ausgewählt ist: Cigaretteh, Cigarillos, Filterpapierhülsen. 15. A smoking product according to claim 14, characterized in that the smoke product is selected from the group: Cigaretteh, cigarillos, filter paper sleeves.
EP06707293A 2005-04-15 2006-02-27 Tabacco smoke filter Withdrawn EP1868457A1 (en)

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