EP2549896B1 - Filter für tabakrauch - Google Patents

Filter für tabakrauch Download PDF

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Publication number
EP2549896B1
EP2549896B1 EP11712652.4A EP11712652A EP2549896B1 EP 2549896 B1 EP2549896 B1 EP 2549896B1 EP 11712652 A EP11712652 A EP 11712652A EP 2549896 B1 EP2549896 B1 EP 2549896B1
Authority
EP
European Patent Office
Prior art keywords
filter
additive
core
tobacco smoke
around
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.)
Not-in-force
Application number
EP11712652.4A
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English (en)
French (fr)
Other versions
EP2549896A1 (de
Inventor
Paul Francis Clarke
Jonathan P. Aimson
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.)
Essentra Filter Products Development Co Pte Ltd
Original Assignee
Essentra Filter Products Development Co Pte Ltd
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Priority to PL11712652T priority Critical patent/PL2549896T3/pl
Publication of EP2549896A1 publication Critical patent/EP2549896A1/de
Application granted granted Critical
Publication of EP2549896B1 publication Critical patent/EP2549896B1/de
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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
    • A24D3/04—Tobacco smoke filters characterised by their shape or structure
    • A24D3/048—Tobacco smoke filters characterised by their shape or structure containing additives
    • A—HUMAN NECESSITIES
    • A24—TOBACCO; CIGARS; CIGARETTES; SIMULATED SMOKING DEVICES; SMOKERS' REQUISITES
    • A24D—CIGARS; CIGARETTES; TOBACCO SMOKE FILTERS; MOUTHPIECES FOR CIGARS OR CIGARETTES; MANUFACTURE OF TOBACCO SMOKE FILTERS OR MOUTHPIECES
    • A24D3/00—Tobacco smoke filters, e.g. filter-tips, filtering inserts; Filters specially adapted for simulated smoking devices; Mouthpieces for cigars or cigarettes
    • A24D3/06—Use of materials for tobacco smoke filters
    • A24D3/061—Use of materials for tobacco smoke filters containing additives entrapped within capsules, sponge-like material or the like, for further release upon smoking
    • 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
    • A24D1/00—Cigars; Cigarettes
    • A24D1/04—Cigars; Cigarettes with mouthpieces or filter-tips
    • A24D1/045—Cigars; Cigarettes with mouthpieces or filter-tips with smoke filter means
    • A—HUMAN NECESSITIES
    • A24—TOBACCO; CIGARS; CIGARETTES; SIMULATED SMOKING DEVICES; SMOKERS' REQUISITES
    • A24D—CIGARS; CIGARETTES; TOBACCO SMOKE FILTERS; MOUTHPIECES FOR CIGARS OR CIGARETTES; MANUFACTURE OF TOBACCO SMOKE FILTERS OR MOUTHPIECES
    • A24D3/00—Tobacco smoke filters, e.g. filter-tips, filtering inserts; Filters specially adapted for simulated smoking devices; Mouthpieces for cigars or cigarettes
    • A24D3/02—Manufacture of tobacco smoke filters
    • A24D3/0275—Manufacture of tobacco smoke filters for filters with special features
    • A24D3/0291—Manufacture of tobacco smoke filters for filters with special features for hollow tipped filters, e.g. recess 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
    • A24D3/06—Use of materials for tobacco smoke filters
    • A24D3/062—Use of materials for tobacco smoke filters characterised by structural features
    • A24D3/063—Use of materials for tobacco smoke filters characterised by structural features of the fibers
    • A—HUMAN NECESSITIES
    • A24—TOBACCO; CIGARS; CIGARETTES; SIMULATED SMOKING DEVICES; SMOKERS' REQUISITES
    • A24D—CIGARS; CIGARETTES; TOBACCO SMOKE FILTERS; MOUTHPIECES FOR CIGARS OR CIGARETTES; MANUFACTURE OF TOBACCO SMOKE FILTERS OR MOUTHPIECES
    • A24D3/00—Tobacco smoke filters, e.g. filter-tips, filtering inserts; Filters specially adapted for simulated smoking devices; Mouthpieces for cigars or cigarettes
    • A24D3/06—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 present invention relates to filters and filter elements for smoking articles such as cigarettes.
  • Recess filters are well known in the tobacco industry and provide a unique end appearance for cigarettes. They are typically manufactured by wrapping a continuous stream of filter segments at spaced intervals in a relatively stiff plug wrap paper. By cutting the filter stream in a region where no filter segment (element) is present, a recess filter can be obtained - the stiff plugwrap paper providing sufficient rigidity to enable the final cigarette to be manufactured and used without crushing the exposed paper end of the filter.
  • Recess filters can incorporate one, two or more filter segments. If it is desired to incorporate activated carbon or other particulate additive within the filter, it has been necessary to use at least two segments - the segment closest to the mouth end generally comprising cellulose acetate so as to present a plain white end (within the recess, or cavity) to the smoker and the segment closest to the tobacco column typically comprising carbon (or other) granules interspersed within a fibrous matrix.
  • the requirement to use at least two segments in order to incorporate particulate additive into a recess filter increases the complexity and cost of manufacture of carbon recess filters. Further, there are implications for e.g. a conventional two segment superslim (e.g.
  • a tobacco smoke filter comprising an outer wrapper engaged around a single longitudinal extending core of tobacco smoke filtering material, wherein a first end of the outer wrapper is substantially flush with a first end of the core around which it is engaged, and a second end of the outer wrapper extends beyond a second end of the core around which is engaged, to define a (e.g. tubular) cavity at the second end of the filter; the filter (or filter element) further comprising an additive (e.g. a particulate additive) distanced from the second end of the outer wrapper and/or core.
  • the radially inner face of the outer wrapper which extends beyond the second end of the core around which is engaged may define (e.g. with the second end of the longitudinally extending core) a cavity or recess, e.g. a tubular cavity/recess, at the second end of the recess filter.
  • the particulate additive is distanced from the second end of the wrapper and/or core such that it is not visible from the second end of the wrapper and/or core.
  • the single longitudinally extending core of tobacco smoke filtering material comprises a rod shaped core of tobacco smoke filtering material having fully enclosed (e.g. embedded) therewithin a (or at least one) pocket of additive (e.g. particulate additive).
  • the rod shaped core of tobacco smoke filtering material may optionally have an additional wrapper (e.g. porous or non porous) engaged around the rod shaped core.
  • the provision of the fully enclosed pocket of additive within the core of the tobacco smoke filtering material has the effect that the additive is distanced from the second end of the core (because there is tobacco smoke filtering material between the pocket of additive and the end of the core).
  • the single longitudinally extending core of tobacco smoke filtering material may have fully enclosed (e.g. embedded) therewithin a single pocket of additive (e.g. particulate additive) close to the first end (e.g. the tobacco end in a filter cigarette) and remote from the second end (e.g. the buccal or mouth end).
  • the single longitudinally extending core of tobacco smoke filtering material may have fully enclosed (e.g. embedded) therewithin a single pocket of additive (e.g. particulate additive) positioned equidistantly between the first end of the core (e.g. the tobacco end in a filter cigarette) and the second end of the core (e.g. the end of the core closest to the buccal or mouth end in a filter cigarette).
  • the single longitudinally extending core of tobacco smoke filtering material may have fully enclosed therewithin one or more (e.g. two, three, four) separate pockets of additive (e.g. particulate additive).
  • the fully enclosed (e.g. embedded) pockets of additive may taper towards one or both ends - e.g. may be of a generally ellipsoidal configuration. If there is more than one pocket of additive, these may have even longitudinal spacing. Other pocket dispositions are possible - e.g. relatively close longitudinal spacing alternating with longer spacing - it being possible to achieve this by appropriate adjustment of the manufacturing process.
  • the single longitudinally extending core of tobacco smoke filtering material comprising a rod shaped core of tobacco smoke filtering material having fully enclosed (e.g. embedded) therewithin a (or at least one) pocket of additive (e.g. particulate additive) may be manufactured, for example, by the methods and apparatus disclosed in WO 2006/059134 .
  • US3991773 discloses a recess filter which includes an additive located in a chamber between two sections of filter material.
  • WO2008/074977 discloses a multi-segment core made of two separate filtering elements.
  • WO2009/098462 relates to a tobacco smoke filter or filter element comprising a longitudinally extending core of tobacco smoke filtering material having fully enclosed therewithin at least one pocket of a first additive; and a wrapper engaged around the core, the wrapper having a second additive adhered to one or more portion(s) of the radially inner face thereof with said wrapper being free of additive around its circumference at one end.
  • a tobacco smoke filter comprising an outer wrapper engaged around a single longitudinal extending core of tobacco smoke filtering material; wherein the single longitudinal extending core of tobacco smoke filtering material comprises a rod shaped core of tobacco smoke filtering material having fully enclosed (e.g. embedded) therewithin a (or at least one) pocket of additive (e.g. particulate additive); wherein a first end of the outer wrapper is substantially flush with a first end of the core around which it is engaged, and a second end of the outer wrapper extends beyond a second end of the core around which is engaged to define a cavity (recess) at the second end of the filter.
  • additive e.g. particulate additive
  • the rod shaped core of tobacco smoke filtering material may optionally have an additional wrapper engaged around the rod shaped core.
  • the radially inner face of the outer wrapper which extends beyond the second end of the core around which is engaged may define (e.g. with the second end of the longitudinally extending core) a cavity or recess, e.g. a tubular cavity/recess, at the second end of the filter.
  • the single longitudinally extending core of tobacco smoke filtering material comprises a rod shaped core of tobacco smoke filtering material and an additive (e.g. particulate additive) bearing wrapper engaged around the rod shaped core, the additive bearing wrapper having additive (e.g. particulate additive) adhered to one or more portion(s) of the radially inner face thereof with said additive bearing wrapper being free of additive around its circumference at the second end of the core.
  • additive e.g. particulate additive
  • the additive bearing wrapper is free of additive around its circumference at both first and second ends of the core.
  • the longitudinally extending core of tobacco smoke filtering material comprising a rod shaped core of tobacco smoke filtering material and an additive (e.g. particulate additive) bearing wrapper engaged around the rod shaped core, may be a filter element as disclosed in GB 2261152 .
  • the additive bearing wrapper may be porous or non porous.
  • a tobacco smoke filter comprising an outer wrapper engaged around a single longitudinal extending core of tobacco smoke filtering material; wherein a first end of the outer wrapper is substantially flush with a first end of the core around which it is engaged, and a second end of the outer wrapper extends beyond a second end of the core around which is engaged to define a (e.g. tubular) cavity at the second end of the filter;
  • the single longitudinally extending core of tobacco smoke filtering material comprising a rod shaped core of tobacco smoke filtering material and an additive (e.g.
  • particulate additive bearing wrapper engaged around the rod shaped core, the additive bearing wrapper having additive adhered to one or more portion(s) of the radially inner face thereof with said additive bearing wrapper being free of additive around its circumference at the second end of the core.
  • the radially inner face of the outer wrapper which extends beyond the second end of the core around which is engaged may define (e.g. with the second end of the longitudinally extending core) a cavity or recess, e.g. a tubular cavity/recess, at the second end of the filter.
  • the outer wrapper may have additive (e.g. a particulate additive) adhered to one or more portion(s) of the radially inner face thereof with said outer wrapper being free of the additive around its circumference at the second end of the wrapper.
  • the outer wrapper may be free of additive in a region extending from the second end of the wrapper (towards the first end), the region extending at least up to, and preferably further than, the distance by which the second end of the wrapper extends beyond the second end of the core around which is engaged to define the cavity.
  • the inner face of the wrapper which extends beyond the second end of the core around which it is engaged to define the cavity at the second end of the filter is therefore free of additive around its circumference, so that no additive is visible on the inner face of the walls of the cavity.
  • 'monocarbon' filters i.e. filters incorporating a single longitudinally extending core of filtering material and additive (e.g. carbon) that have at least one end free of additive and e.g. which can be manufactured in a one-pass process (including the 'Active Patch' filter, as disclosed in, for example, GB 2261152 , and the 'Smooth Core' filter, as disclosed in, for example, WO 2006/059134 ) - may effectively and advantageously be incorporated into a recess filter, according to aspects of the present invention.
  • additive e.g. carbon
  • the claimed filters may provide improved sensory characteristics, because it is possible to exercise greater control over the contact of the smoke stream with the carbon in the filter (e.g. by controlling the location of the carbon within a central 'pod' or pocket in a 'Smooth Core' filter, or on the periphery of the plugwrap in an 'Active Patch' filter) and then allowing the smoke streams to circulate and mingle within the recess prior to entering the smoker's mouth and impinging on their palate.
  • the use, as a "base rod" within a recess filter, of a single longitudinally extending core of filtering material having an additive-free end, can considerably reduce the complexity and cost of manufacture of recess filters containing an additive - e.g. carbon recess filters. This is because there is the need to only cut and align a single filter component rather than two or more segments as with conventional carbon recess filters.
  • a rod shaped core of tobacco smoke filtering material and an additive (e.g. particulate additive) bearing wrapper engaged around the rod shaped core in a superslim recess filter may enable higher carbon weights to be used than for conventional superslim carbon recess filters, while maintaining a satisfactory pressure drop and smoking experience.
  • the filtering material may be for example any of those materials (usually filamentary, fibrous, web or extruded) conventionally employed for tobacco smoke filter manufacture.
  • the filtering material may be natural or synthetic filamentary tow, e.g. of cotton or plastics such as polyethylene or polypropylene, or cellulose acetate filamentary tow. It may be, for example, natural or synthetic staple fibres, cotton wool, web material such as paper (usually creped) and synthetic non-wovens, and extruded material (e.g. starch, synthetic foams).
  • the additive may be a particulate additive.
  • the particulate additive may any particulate additive suitable for use in a tobacco smoke filter - e.g. activated carbon, zeolite, ion exchange resin (e.g. a weakly basic anion exchange resin), sepiolite, silica gel, alumina, molecular sieves, carbonaceous polymer resins and diatomaceous earths.
  • the particulate additive may be a mixture of two, or more, materials.
  • the additive may include a flavourant - e.g. menthol - e.g. the additive may be sepiolite granules to which menthol has been applied. If the longitudinally extending extending core of tobacco smoke filtering includes fully enclosed (e.g.
  • the additive may be a particulate additive such as activated carbon (see above), which is for example enclosed within the filtering material as a discrete pocket or pod of particles of particulate additive which is substantially separate from, and fully enclosed within, the filtering material.
  • the fully enclosed (e.g. embedded) pocket(s) of additive may be a frangible capsule or capsules, or one or a plurality of frangible microcapsules.
  • the capsule(s) or microcapsule(s) may contain a variety of media - e.g. a flavourant and/or a liquid, solid or other material e.g. to aid smoke filtration.
  • the use of capsules or microcapsules is well known in the art.
  • the tobacco smoke filter may be of length 15 to 40 mm, e.g. 17 to 35 mm, e.g. 20 to 30 mm.
  • the recess section of the filter tip (that is, the length by which the second end of the outer wrapper extends beyond the second end of the core around which is engaged to define the cavity at the second (e.g. mouth) end of the filter) may have a length 3 to 10 mm, and is most preferably of length 4 to 6 mm.
  • the single longitudinally extending core of tobacco smoke may be of length 10 to 30 mm, e.g. 14 to 27 mm, e.g. 17 to 25 mm.
  • the tobacco smoke filter may be of circumference 14 to 28 mm, for example 16 to 26 mm, for example 16 to 17 mm or 24 to 25 mm.
  • the final filter cigarette may be ventilated or non-ventilated and of any circumference range traditionally used in smoking products (e.g. c. 14 to c. 28 mm circumference).
  • the outer wrapper may be paper, e.g. plugwrap paper, e.g. stiff plugwrap paper.
  • the outer wrapper may be porous or non porous.
  • the outer wrapper may be a paper of basis weight from about 40 to about 120 g/m 2 .
  • the outer wrapper may be of basis weight from about 80 to about 120 g/m 2 , for example a basis weight of around 100 g/m 2 , e.g. for a recess filter of standard (c. 24-25 mm) circumference.
  • the outer wrapper may be a plugwrap paper of a lower basis weight, e.g. around 50 g/m 2 .
  • the outer wrapper of basis weight from about 40 to about 120 g/m 2 can overcome a potential disadvantage associated with 'Active Patch' filters, that it can be possible to feel the presence of carbon granules adhered to the inner surface of the additive bearing wrapper (of e.g. plugwrap paper) when handling the finished filter or cigarette.
  • the defined filters e.g. including outer wrapper of basis weight from about 40 to about 120 g/m 2
  • a filter of the invention (or a filter which includes a filter element of the invention) is joined to a wrapped tobacco rod with one end of the filter towards the tobacco.
  • the filter may, for example, be joined to the wrapped tobacco rod by ring tipping [which engages around just the adjacent ends of the (wrapped) filter and rod to leave much of the filter wrap exposed] or, more preferably, by a full tipping overwrap (which engages around the full filter length and the adjacent end of the tobacco rod).
  • the cigarette may include a tipping overwrap (of e.g. a stiff tipping paper) in conjunction with the outer wrapper of the filter to give the desired (e.g. further increased) stiffness to the final recess filter cigarette.
  • Any filter or filter cigarette according to the invention may be unventilated, or may be ventilated by methods well known in the art, e.g. by use of a pre-perforated or air-permeable wrapper (plugwrap), and/or laser perforation of wrapper (plugwrap) and tipping overwrap.
  • a ventilating full tipping overwrap may likewise be inherently air-permeable or provided with ventilation holes, and in ventilated products where both filter plugwrap and tipping overwrap are present ventilation through the overwrap will usually be in register with that through the plugwrap. Ventilation holes through a filter plugwrap, or through a tipping overwrap, or through both simultaneously, may be made by laser perforation during filter or filter cigarette production.
  • Ventilation in a filter or filter cigarette according to the invention is localised longitudinally of the product, this localisation is preferably to one or two regions selected from upstream of, downstream of, and in register with the or a pocket (or patch or portion) of first additive, depending upon the ventilation and filtering performances required. Ventilation upstream of and/or in register with a pocket of first additive is frequently preferred. There may be ventilation between portions (or pockets or patches) of second additive when two or more are present.
  • a multiple rod comprising a plurality (e.g. 2, 4, 6 etc.) of filters (or filter elements) as described above and/or herein integrally joined end-to-end in a mirror image relationship.
  • FIGURE 1 schematically illustrates a recess filter according to an embodiment of the invention
  • FIGURE 2 schematically illustrates a recess filter according to a second embodiment of the invention
  • FIGURE 3 schematically illustrates a recess filter according to a further embodiment of the invention
  • FIGURE 4 schematically illustrates a recess filter according to a different further embodiment of the invention
  • FIGURE 5 schematically illustrates a recess filter according to a different still further embodiment of the invention.
  • Figure 5 shows a filter similar to that of Figure 4 , and the reference numerals are the same as those for the embodiment of Fig 5 .
  • the pocket 199 is located centrally between the second (mouth) and first (tobacco) ends of core 107; again, it will be appreciated that core 107 has both ends free of additive (because it the additive is fully embedded within the core) and therefore the additive is invisible from the second or mouth end of the filter.
  • Figures 4 and 5 demonstrate that the position and size/weight of the granular pocket 199 can be varied to suit different cigarette design requirements.

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

Claims (15)

  1. Tabakrauchfilter oder -filterelement, der bzw. das eine äußere Umhüllung, die um einen einzelnen sich längs erstreckenden Kern aus Tabakrauchfiltermaterial angelegt ist, aufweist, wobei ein erstes Ende der äußeren Umhüllung mit einem ersten Ende des Kerns, um den sie angelegt ist, im Wesentlichen bündig ist und ein zweites Ende der äußeren Umhüllung sich über ein zweites Ende des Kerns, um den sie angelegt ist, hinaus erstreckt, um am zweiten Ende des Filters einen Hohlraum zu definieren; wobei der Filter oder das Filterelement ferner einen vom zweiten Ende der äußeren Umhüllung und/oder des Kerns beabstandeten Zusatz aufweist.
  2. Filter oder Filterelement nach Anspruch 1, wobei der einzelne sich längs erstreckende Kern aus Tabakrauchfiltermaterial einen stabförmigen Kern aus Tabakrauchfiltermaterial umfasst, in dem wenigstens eine Zusatztasche ganz eingeschlossen ist.
  3. Filter oder Filterelement nach Anspruch 1, wobei der einzelne sich längs erstreckende Kern aus Tabakrauchfiltermaterial einen stabförmigen Kern aus Tabakrauchfiltermaterial und eine zusatztragende Umhüllung, die um den stabförmigen Kern angelegt ist, umfasst, wobei die zusatztragende Umhüllung an einem oder mehr Teil(en) der radial inneren Seitenfläche davon anhaftenden Zusatz hat, wobei die genannte zusatztragende Umhüllung am zweiten Ende des Kerns um ihren Umfang frei von Zusatz ist.
  4. Filter oder Filterelement nach Anspruch 1, wobei die äußere Umhüllung an einem oder mehr Teil(en) der radial inneren Seitenfläche davon anhaftenden Zusatz hat, wobei die genannte äußere Umhüllung am zweiten Ende der Umhüllung um ihren Umfang frei von Zusatz ist.
  5. Tabakrauchfilter, der eine äußere Umhüllung, die um einen einzelnen sich längs erstreckenden Kern aus Tabakrauchfiltermaterial angelegt ist, aufweist; wobei der einzelne sich längs erstreckende Kern aus Tabakrauchfiltermaterial einen stabförmigen Kern aus Tabakrauchfiltermaterial umfasst, in dem wenigstens eine Zusatztasche ganz eingeschlossen ist; wobei ein erstes Ende der äußeren Umhüllung mit einem ersten Ende des Kerns, um den sie angelegt ist, im Wesentlichen bündig ist und ein zweites Ende der äußeren Umhüllung sich über ein zweites Ende des Kerns, um den sie angelegt ist, hinaus erstreckt, um am zweiten Ende des Filters einen Hohlraum zu definieren.
  6. Tabakrauchfilter, der eine äußere Umhüllung, die um einen einzelnen sich längs erstreckenden Kern aus Tabakrauchfiltermaterial angelegt ist, aufweist; wobei ein erstes Ende der äußeren Umhüllung mit einem ersten Ende des Kerns, um den sie angelegt ist, im Wesentlichen bündig ist und ein zweites Ende der äußeren Umhüllung sich über ein zweites Ende des Kerns, um den sie angelegt ist, hinaus erstreckt, um am zweiten Ende des Filters einen Hohlraum zu definieren; wobei der einzelne sich längs erstreckende Kern aus Tabakrauchfiltermaterial einen stabförmigen Kern aus Tabakrauchfiltermaterial und eine um den stabförmigen Kern angelegte zusatztragende Umhüllung aufweist, wobei die zusatztragende Umhüllung an einem oder mehr Teil(en) der radial inneren Seitenfläche davon anhaftenden Zusatz hat, wobei die genannte zusatztragende Umhüllung am zweiten Ende des Kerns um ihren Umfang frei von Zusatz ist.
  7. Filter oder Filterelement nach einem der vorhergehenden Ansprüche, wobei das Filtermaterial eines oder mehr der folgenden ist: natürlicher oder synthetischer Filamentfaserstoff, z.B. Baumwolle oder Kunststoffe, wie Polyethylen oder Polypropylen, Celluloseacetat-Filamentfaserstoff, natürliche oder synthetische Stapelfasern, Watte, ein Bahnmaterial, wie etwa Papier (z.B. gekrepptes Papier), synthetischer Vliesstoff und extrudiertes Material (z.B. Stärke, synthetische Schaumstoffe).
  8. Filter- oder Filterelement nach einem der vorhergehenden Ansprüche, wobei der Zusatz ein Partikel-Zusatz ist.
  9. Filter oder Filterelement nach einem der vorhergehenden Ansprüche, wobei der Partikel-Zusatz Aktivkohle, Zeolit, Ionenaustauschharz (z.B. ein schwach basisches Anionenaustauschharz), Sepiolith, Kieselgel, Aluminiumoxid, Molekularsieb, kohlenstoffhaltiges polymeres Harz, eine Diatomeenerde oder ein Gemisch von zwei oder mehr dieser Zusätze ist.
  10. Filter oder Filterelement nach Anspruch 2 oder 5, wobei der Zusatz in der bzw. den ganz eingeschlossenen Zusatztasche(n) (eine) zerbrechliche Kapsel oder Kapseln oder eine oder mehrere zerbrechliche Mikrokapseln ist.
  11. Filter oder Filterelement nach einem der vorhergehenden Ansprüche, wobei die äußere Umhüllung Papier ist, z.B. Filterbelagpapier.
  12. Filter oder Filterelement nach einem der vorhergehenden Ansprüche, wobei die äußere Umhüllung Papier mit einem Basisgewicht von etwa 40 bis etwa 120 g/m2 ist.
  13. Tabakrauchfilter, im Wesentlichen wie im Vorangehenden mit Bezug auf eine der angefügten Zeichnungen beschrieben.
  14. Filterzigarette, die einen Filter nach einem der vorhergehenden Ansprüche aufweist, der mit dem ersten Ende des Kerns zum Tabak hin an einen umhüllten Tabakstab angesetzt ist.
  15. Mehrfachstab, der mehrere (z.B. 2, 4, 6 usw.) Filter (oder Filterelemente) nach einem der Ansprüche 1 bis 13 aufweist, die in einer Spiegelbildbeziehung einstückig Ende an Ende auf Stoß aneinandergefügt sind.
EP11712652.4A 2010-03-24 2011-03-24 Filter für tabakrauch Not-in-force EP2549896B1 (de)

Priority Applications (1)

Application Number Priority Date Filing Date Title
PL11712652T PL2549896T3 (pl) 2010-03-24 2011-03-24 Filtr dymu tytoniowego

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
GBGB1004976.5A GB201004976D0 (en) 2010-03-24 2010-03-24 Tobacco smoke filter
PCT/GB2011/000421 WO2011117584A1 (en) 2010-03-24 2011-03-24 Tobacco smoke filter

Publications (2)

Publication Number Publication Date
EP2549896A1 EP2549896A1 (de) 2013-01-30
EP2549896B1 true EP2549896B1 (de) 2019-07-17

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Application Number Title Priority Date Filing Date
EP11712652.4A Not-in-force EP2549896B1 (de) 2010-03-24 2011-03-24 Filter für tabakrauch

Country Status (11)

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EP (1) EP2549896B1 (de)
JP (2) JP2013521820A (de)
KR (1) KR20130007612A (de)
CN (2) CN102905568A (de)
GB (1) GB201004976D0 (de)
HU (1) HUE045493T2 (de)
LT (1) LT2549896T (de)
PL (1) PL2549896T3 (de)
RU (1) RU2012142714A (de)
UA (1) UA110107C2 (de)
WO (1) WO2011117584A1 (de)

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GB201211523D0 (en) * 2012-06-27 2012-08-08 Filtrona Filter Prod Dev Co Tobacco smoke filter
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GB201219540D0 (en) 2012-10-31 2012-12-12 British American Tobacco Co A filter for a smoking article
EA034059B1 (ru) * 2015-08-28 2019-12-24 Джт Интернэшнл С.А. Курительное изделие
WO2017036588A1 (en) 2015-08-28 2017-03-09 Jt International S.A. Smoking article
JP7350723B2 (ja) 2017-10-13 2023-09-26 フィリップ・モーリス・プロダクツ・ソシエテ・アノニム 粒子状のエアロゾル変更材料を備えたくぼみを有するエアロゾル発生物品

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Also Published As

Publication number Publication date
RU2012142714A (ru) 2014-04-27
CN102905568A (zh) 2013-01-30
GB201004976D0 (en) 2010-05-12
WO2011117584A1 (en) 2011-09-29
HUE045493T2 (hu) 2019-12-30
UA110107C2 (uk) 2015-11-25
PL2549896T3 (pl) 2020-03-31
LT2549896T (lt) 2019-08-26
JP2016105718A (ja) 2016-06-16
JP2013521820A (ja) 2013-06-13
EP2549896A1 (de) 2013-01-30
CN105476064A (zh) 2016-04-13
KR20130007612A (ko) 2013-01-18

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