EP1796488B1 - Filtre ou element filtrant de fumee de tabac ayant une teneur en additifs - Google Patents

Filtre ou element filtrant de fumee de tabac ayant une teneur en additifs Download PDF

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Publication number
EP1796488B1
EP1796488B1 EP05797962A EP05797962A EP1796488B1 EP 1796488 B1 EP1796488 B1 EP 1796488B1 EP 05797962 A EP05797962 A EP 05797962A EP 05797962 A EP05797962 A EP 05797962A EP 1796488 B1 EP1796488 B1 EP 1796488B1
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EP
European Patent Office
Prior art keywords
filter
tobacco smoke
smoke filter
additive
mass
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
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EP05797962A
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German (de)
English (en)
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EP1796488A2 (fr
Inventor
Eckart SCHÜTZ
Günter Maurer
Eberhard Teufel
Paul Rustemeyer
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Cerdia Produktions GmbH
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Rhodia Acetow GmbH
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Publication of EP1796488A2 publication Critical patent/EP1796488A2/fr
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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
    • A24D3/08—Use of materials for tobacco smoke filters of organic materials as carrier or major constituent
    • A24D3/10—Use of materials for tobacco smoke filters of organic materials as carrier or major constituent of cellulose or cellulose derivatives
    • A—HUMAN NECESSITIES
    • A24—TOBACCO; CIGARS; CIGARETTES; SIMULATED SMOKING DEVICES; SMOKERS' REQUISITES
    • A24D—CIGARS; CIGARETTES; TOBACCO SMOKE FILTERS; MOUTHPIECES FOR CIGARS OR CIGARETTES; MANUFACTURE OF TOBACCO SMOKE FILTERS OR MOUTHPIECES
    • A24D3/00—Tobacco smoke filters, e.g. filter-tips, filtering inserts; Filters specially adapted for simulated smoking devices; Mouthpieces for cigars or cigarettes
    • 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
    • A24D3/14—Use of materials for tobacco smoke filters of organic materials as additive
    • 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

Definitions

  • the invention relates to tobacco smoke filters or filter elements which are constructed in one piece and contain fibers, filaments or films based on spinnable or film-processable polymers or polymer blends and one or more additives.
  • Tobacco smoke filters of the above type are known in the art. It should be understood by “one piece” that the tobacco smoke filter are constructed in a uniform longitudinal-axial direction and can be made without further limiting filter elements. Here, there is a significant difference to what are termed “chamber filters” in which a chamber bounded outwardly by a wrapping paper, which may be filled by additives such as granular activated carbon, is provided between longitudinally spaced filter elements of conventional filter material.
  • the cheaper behaves in the EP-A-014477 described filter construction is scattered in the granular activated carbon in a filter element in a manner that an approximately homogeneous distribution of the activated carbon particles in the themselves homogeneously distributed fibers or filaments of the filter material is ensured.
  • by-pass formation can be precluded in this way, coarse-grained additives are required to ensure fixation of the said particles in the tobacco smoke filter.
  • the described disadvantages of the coarse-grained activated carbon are therefore also evident in this filter construction.
  • filter cigarettes are on their mouth side End provided with tobacco smoke filter that captures at least a portion of the combustion products of the tobacco of the cigarette and thereby prevents the combustion products are inhaled during smoking.
  • a tobacco smoke filter should influence the taste of the tobacco smoke so that it is judged by the smoker to be positive.
  • the tobacco smoke filter is mixed with a porous, particulate additive which increases the filtration performance of the tobacco smoke filter or the tobacco smoke filter elements compared to a tobacco smoke filter without particulate additives.
  • the porous additives preferably adsorb gaseous combustion products on their inner surface and thus reduce their concentration in the smoke.
  • the porous additives preferably adsorb gaseous combustion products on their inner surface and thus reduce their concentration in the smoke.
  • the porous additive activated carbon In the most prominent representatives of this type of cigarette filters is used as a porous, particulate additive activated carbon.
  • Other such tobacco smoke filters such as those in the DE-A-2 658 479 contain oxides, hydroxides and / or oxide hydrates of various metals, such as silicon, aluminum, magnesium, iron and / or titanium.
  • Critical to the effectiveness of such porous, particulate additives is their accessibility to the gaseous smoke ingredients.
  • finely divided porous materials show an increased filter performance compared to coarser particles.
  • Other disadvantages of the above-mentioned chamber filter can be seen in the fact that they require a lot of effort in their production.
  • US-A-3,043,736 and the US-A-2,881,770 describe a tobacco smoke filter from a bundle of endless, crimped filaments of cellulose acetate, which is summarized by a wrapping paper to a filter rod, wherein the individual filaments are coated with finely divided activated carbon.
  • the possible devices for application of the finely particulate additives can be classified into devices a) for applying the additive from a slurry in an aqueous phase or a volatile organic carrier or plasticizer fluid, b) for inflating the small particle additives previously mentioned c) for application of a latex emulsion; and d) for applying the additive by passing a bundle of filaments or filaments previously wetted by adhesive or plasticizer through a fluidized bed of finely divided activated carbon.
  • devices a) for applying the additive from a slurry in an aqueous phase or a volatile organic carrier or plasticizer fluid b) for inflating the small particle additives previously mentioned c) for application of a latex emulsion
  • d) for applying the additive by passing a bundle of filaments or filaments previously wetted by adhesive or plasticizer through a fluidized bed of finely divided activated carbon.
  • the tobacco smoke filters produced by the above methods are characterized in that the filaments loaded with additives are preferably oriented longitudinally and mutually bound to each other at randomly distributed contact points by the action of an adhesive or plasticizer, so that evenly distributed over the filter substantially longitudinal small spaces be created between adjacent filaments by the flow of tobacco smoke.
  • the stated embodiments illustrate that the tobacco smoke filter thus produced and offset by particulate additives have similar high tensile resistances as the comparative filter without incorporation of particulate additives. Consequently, according to these methods, it is not possible to produce filters which have the same high additive mass as low draw resistances.
  • filter filters doped with activated carbon in tobacco smoke filters are used. These include small particle size activated carbons that are bound to the paper during the papermaking process.
  • a fabric is produced by the manufacturer of the filter material, rolled on reels and then sent to the processor. The filter or cigarette maker rolls the material off the reel, forming it into a rod-shaped product, then transaxially compressing it in the format part of the filter rod machine, wrapping it with paper and cutting it to the final length of the filter rods.
  • the fabric is usually, but not necessarily, crimped before forming into a rod parallel to the direction by a creping device. On the one hand, this achieves a reduction in the material density and, on the other hand, an influence on the draft resistance of the filters.
  • Characteristic of such filters produced by pleating of sheet materials is their channel structure in which longitudinally channel-shaped regions of low material density extend over a substantial portion of the length of the filter or filter element. These channels are limited by the filter material with a higher material density. This structural property is essentially due to the comparatively low draw resistance of these filters.
  • these surface filters which are not or only partially made of cellulose acetate, however, the smoke flavor is often judged to be negative.
  • such filters do not exhibit the specific retention performances for phenols or nitrosamines known from the cellulose acetate cigarette filters.
  • the invention was therefore based on the object at the outset designated integrally constructed tobacco smoke filter or filter elements so that the effectiveness of incorporated finely divided adsorbents is impaired as little as possible and yet at associated high mass of the particulate additives, a lower draw resistance, in particular as a filter material used cellulose acetate shall be.
  • this object is achieved in that a) the additives are present on the surface of the fibers, the filaments or the films, b) the draw resistance of the tobacco smoke filter and the mass of the additives in the tobacco smoke filter comply with the following formula (I): M ad / ⁇ p > 1 mg / daPa (I), where ⁇ p is the draw resistance [daPa], which is used as a value converted to 7.8 mm filter diameter, and M ad [mg] is the mass of the additives, c) the tobacco smoke filter has channel structure and d) the filter material is present as a flat structure.
  • the filter material is a flat structure of fibers or filaments or a film, wherein the sheet-like structure and / or the film are smooth, pleated embossed and / or partially compressed.
  • the filter material is made up of a cellulose ester, in particular cellulose acetate, cellulose butyrate, cellulose acetobutyrate, cellulose acetopropionate and / or cellulose propionate being suitable as cellulose esters.
  • a particularly preferred cellulose acetate has a degree of substitution of 1.5 to 3.0, especially 2.2 to 2.6, more preferably 2.5. It has proven to be particularly advantageous to use a tobacco smoke filter in the context of the invention or in its realization, which in the WO 01/28369 is described.
  • Optimum residual crimping is between about 1.05 and 1.4, in particular between 1.1 and 1.3. Furthermore, it is preferred that the fiber or filament mass draw resistance ratio S related to the filament titer is at most 2, in particular between 0.8 and 1.3.
  • the tobacco smoke filter according to the invention if the fiber or filament mass is at least 4 mg / mm filter length, in particular between 5 and 8 mg / mm filter length.
  • the Filtrona hardness should preferably be between 90 and 95, in particular between 91 and 93.
  • the additives that are essential for the solution of the problem are arranged on the surface of the fibers, the filaments or the films.
  • these additives are particulate, in particular have a particle size of less than 300 microns, in particular less than 100 microns. It is particularly preferred if the particle diameter is less than 50 microns, with a particle size of less than 30 microns leads to particularly good results.
  • the invention is not subject to any significant restriction.
  • the suitable additives these preferably being in the form of an adsorbent based on activated carbon, metal oxides, metal hydroxides and / or metal oxide hydrates, in particular those of aluminum, silicon, titanium and / or magnesium is.
  • the porous additive is additionally mixed with active substances, in particular in the form of antioxidants, flavors and / or antimutagenic substances.
  • the incorporation of the particulate additives into the tobacco smoke filter of the invention is not critically limited. Nevertheless, it is preferred that the particulate additives are fixed by means of a binder on the surface of the filter material, in particular with polyvinyl acetate, polyvinyl alcohol, polyethylene glycol, water-soluble esters or ethers, starch, starch derivatives and / or cellulose esters.
  • the surface of the fibers, filaments and films can be further optimized as follows:
  • the additive thereon can fulfill the function of a filtration aid, in particular in the form of organic acids, acidic carboxylic esters, polyphenol and / or porphyrin derivatives.
  • the fibers, filaments and films of the film material or the fibers, filaments or films constituting the tobacco smoke filters or filter elements may contain further additives in the interior which improve their properties.
  • These are preferably plasticizers, matting agents, pigments and / or stabilizers. Of particular importance is the inclusion of the plasticizer. In this case, it is preferred that this be present within the fibers or filaments or films in an amount of 0 to 15 wt .-%, in particular from 5 to 12 wt .-%.
  • the plasticizer is expediently present as triacetin, ethylene glycol diacetate and / or diethyl citrate.
  • the tobacco smoke filter according to the invention may also contain a photoreactive additive, in particular in the form of finely divided anatase-type titanium dioxide having an average particle size of less than 2 ⁇ m.
  • the draft resistance of the tobacco smoke filter and the mass of additives in the tobacco smoke filter comply with the following formula (I): M ad / ⁇ p 7.8 > 1 mg / daPa, where ⁇ p [daPa] is the draw resistance, the as a converted to 7.8 mm filter diameter Value is used, and M ad [mg] is the mass of the additives. It is particularly preferred if the ratio of M ad / ⁇ p is above 2 mg / daPa, in particular above 3 mg / daPa.
  • channel structure of the claimed integrally constructed tobacco smoke filter or filter elements Another essential feature of the invention is the channel structure of the claimed integrally constructed tobacco smoke filter or filter elements. It should be noted that in a channel structure, channel-shaped regions of lesser material density extend longitudinally over a substantial portion of the length of the filter or filter element. These channels are limited by the filter material with a higher material density. The channel structure is maintained in particular by using a flat structure according to the invention as the filter material.
  • filter tow is removed from the bale for the production of the tobacco smoke filter according to the invention, pneumatically processed and drawn according to the method customary for space filters.
  • a non-woven nonwoven with the highest possible strength in the direction of both surface axes is generated as an intermediate, which can be wound up on spools and applied with additives.
  • Any suitable method of producing the tobacco smoke filter may be used to distribute powder onto a fibrous surface.
  • the devices a) for applying the additive from a slurry in an aqueous liquid or a volatile organic carrier or plasticizing fluid to the filaments to which a binder may have been added, and b) for inflating the particulate additive on the threads, which may have previously been wetted with an adhesive or a plasticizer.
  • the adhesion of the particulate additives can be ensured by a hot melt adhesive, which is either applied together with the particulate additives or applied separately or activated by brief heating.
  • the tobacco smoke filters according to the invention can be produced continuously from filter rods and cut in a limited length.
  • Each individual element of such limited length could by itself serve as a tobacco smoke filter for a cigarette however, it is preferably used in longitudinal alignment with at least one other filter element as part of a composite (eg, double or triple) cigarette filter.
  • a single filter element according to the present invention is used in conjunction with a longitudinally aligned mouthpiece element of conventional appearance, for example, a unitary rod of cellulose acetate fiber cable.
  • the one-piece tobacco smoke filter of the present invention is relatively easy to manufacture compared to the corresponding comparative products of the prior art. This eliminates the costly production of said chamber filter of several filter elements. Another advantage is that, especially when the filter material is made of cellulose acetate, the smoky taste is judged to be particularly positive. Also, the selective retention effect with respect to phenols is observed.
  • a filter tow of specification 2.1Y48 (filament denier 2.33 dtex, total titer 53 333 dtex) is prepared on a conventional two-stage drafting system KDF 2 from Hauni, Hamburg, and sprayed with 8% triacetin.
  • the filter tow web is inserted with a minimum width of 250 mm in a pair of heated calender rolls and calendered with an effective line pressure of 40 kg / cm.
  • the profiled calender rolls have a diameter of 230 cm and a grooved width of 350 mm and have 10 tread grooves per cm, while the other is unprofiled. They are heated with a silicone oil to 150 ° C.
  • the groove profile is trapezoidal with an upper width of 0.4 mm and a depth of 0.5 mm.
  • the nonwoven thus produced is wound up on a spool.
  • a nonwoven spool is unwound continuously on a conventional padder and passed through a liquor which is filled with an aqueous activated carbon suspension.
  • excess suspension is squeezed off on a pair of nip rolls.
  • the squeegee rollers are driven at 10 m / min and thus ensure a uniform movement of the web through the suspension.
  • the nonwoven is passed through a circulating air dryer at 150 ° C.
  • the dryer has a drying section of 4 m and thus ensures the drying of the suspension and the fixation of the activated carbon on the nonwoven.
  • the nonwoven fabric doped with activated carbon is strand-folded on a commercially available KDF 2 from Körber, Hamburg, by insertion into an inlet nozzle, wrapped in paper and cut to a filter rod length of 126 mm.
  • the diameter of the filter rods was set to 7.8 mm.
  • a filter tow of specification 2.1Y48 (filament denier 2.33 dtex, total titer 53 333 dtex) is prepared on a conventional drafting system KDF 2 from Hauni, Hamburg, and sprayed with triacetin. After leaving the guide roller, the filter tow web is passed with a minimum width of 200 mm through a spreader and pneumatically treated with activated carbon particles of about 250 micron particle size. For this purpose, the activated carbon powder is metered onto a suction nozzle with a metering balance continuously and blown by compressed air through a pipeline to the spreader nozzle.
  • the spreader nozzle is preferably encapsulated with a suction box provided with only openings for the supply and removal of the filter tow web to avoid leakage of coal dust into the environment.
  • the amount of activated carbon on the filter tow web can be set very accurately become.
  • the filter tow web is strand-shaped folded in an inlet nozzle and in a commercial KDF 2 of the Fa Körber, Hamburg; wrapped with paper at a speed of 50 m / min and cut to a filter rod length of 126 mm.
  • the filter rod diameter is set to 7.8 mm.

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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)
  • Filtering Materials (AREA)

Claims (24)

  1. Filtres ou éléments filtrants pour fumée de tabac conçus d'une seule pièce, qui contiennent des fibres, des filaments ou des films à base de polymères ou de mélanges de polymères pouvant être filés ou traités pour former des films et un additif ou plusieurs additifs, l'au moins un additif étant présent sur la surface des fibres, filaments ou films, caractérisé en ce que
    a) l'au moins un additif a une forme de particules,
    b) la résistance à la traction du filtre pour fumée de tabac et la masse de l'au moins un additif respectent la formule suivante dans le filtre pour fumée de tabac : M ad / Δp 7 , 8 > 1 mg / daPa
    Figure imgb0009
     Δp7,8 étant la résistance à la traction [daPa], qui est utilisée sous la forme d'une valeur convertie pour un diamètre de filtre de 7,8 mm, et Mad [mg] étant la masse de l'au moins un additif,
    c) le matériau filtrant étant présent sous forme de structure plane.
  2. Filtre pour fumée de tabac selon la revendication 1, caractérisé en ce que le matériau filtrant en tant que structure plane à base de fibres, filaments ou films est lisse, plissé, gaufré et/ou partiellement compacté.
  3. Filtre pour fumée de tabac selon la revendication 1 ou 2, caractérisé en ce que le matériau filtrant est conçu à base d'un ester de cellulose.
  4. Filtre pour fumée de tabac selon la revendication 3, caractérisé en ce que l'ester de cellulose est de l'acétate de cellulose, du butyrate de cellulose, de l'acétobyrate de cellulose, de l'acétopropionate de cellulose et/ou du propionate de cellulose.
  5. Filtre pour fumée de tabac selon la revendication 4, caractérisé en ce que l'acétate de cellulose présente un degré de substitution de 1,5 à 3,0, en particulier de 2,2 à 2,6.
  6. Filtre pour fumée de tabac selon l'une des revendications 1 à 5, caractérisé en ce que le rapport de Mad/Δp7,8 est supérieur à 2 mg/daPa, en particulier à 3 mg/daPa.
  7. Filtre pour fumée de tabac selon l'une des revendications 1 à 6, caractérisé en ce que l'au moins un additif sous forme de particules, présent sur la surface des fibres, filaments ou films, présente en particulier une dimension de particule de moins de 300 µm.
  8. Filtre pour fumée de tabac selon l'une des revendications 1 à 6, caractérisé en ce que la dimension de particule de l'au moins un additif est inférieure à 100 µm, en particulier inférieure à 50 µm, et tout particulièrement inférieure à 30 µm.
  9. Filtre pour fumée de tabac selon la revendication 7 ou 8, caractérisé en ce que l'au moins un additif sous forme de particules est un additif poreux, en particulier sous la forme d'un adsorbant à base de charbon actif, d'oxydes de métal, d'hydroxydes de métal et/ou d'hydrates d'oxyde de métal.
  10. Filtre pour fumée de tabac selon la revendication 9, caractérisé en ce que, en ce qui concerne les oxydes de métal, les hydroxydes et/ou les hydrates d'oxyde de métal, il s'agit d'aluminium, de silicium, de titane et/ou de magnésium.
  11. Filtre pour fumée de tabac selon la revendication 9 ou 10, caractérisé en ce que l'au moins un additif poreux est mélangé avec des substances actives, en particulier sous forme d'antioxydants, de produits aromatiques ("flavours") et/ou de substances antimutagènes.
  12. Filtre pour fumée de tabac selon au moins l'une des revendications précédentes, caractérisé en ce que l'au moins un additif se trouvant à la surface des fibres, filaments et films est un agent auxiliaire de filtration, en particulier sous forme d'acides organiques, d'ester acide d'acide carboxylique, de polyphénol et/ou de dérivés de porphyrine.
  13. Filtre pour fumée de tabac selon au moins l'une des revendications 1 à 12, caractérisé en ce que l'au moins un additif sous forme de particules est fixé au moyen d'un liant à la surface du matériau filtrant, en particulier avec de l'acétate de polyvinyle, de l'alcool polyvinylique, du polyéthylèneglycol, des esters ou éthers solubles à l'eau, de l'amidon, des dérivés d'amidon et/ou des esters de cellulose, en particulier de l'acétate de cellulose avec un degré d'acétylation moyen de 0,3 à 1.
  14. Filtre pour fumée de tabac selon au moins l'une des revendications 1 à 13, caractérisé en ce que les fibres, filaments ou films du matériau de film contiennent à l'intérieur d'autres additifs pour l'amélioration des propriétés.
  15. Filtre pour fumée de tabac selon la revendication 14, caractérisé en ce que les autres additifs sont des plastifiants, des agents de marquage, des pigments et/ou des stabilisants.
  16. Filtre pour fumée de tabac selon la revendication 15, caractérisé en ce que le plastifiant est présent à l'intérieur des fibres ou filaments ou films en une quantité représentant 5 à 15 % en poids.
  17. Filtre pour fumée de tabac selon la revendication 15 ou 16, caractérisé en ce que le plastifiant est présent sous forme de triacétine, de diacétate d'éthylèneglycol et/ou d'ester diéthylique d'acide citrique.
  18. Filtre pour fumée de tabac selon au moins l'une des revendications précédentes, caractérisé en ce que le rapport masse de fibre ou de filament - résistance à la traction S, rapporté au titre du filament, est supérieur à 0,7, la valeur S étant calculée selon la formule suivante S = m A / Δp 7 , 8 / dpf 10 m / daPa
    Figure imgb0010
    mA [g] représentant la masse de fibre ou de filament, Δp [daPa] la résistance à la traction et dpf [dtex] le titre du filament, la valeur convertie pour le diamètre de filtre de 7,8 mm étant utilisée pour la résistance à la traction, et la dureté du filtre à cigarette dépassant 90 de dureté Filtrona.
  19. Filtre pour fumée de tabac selon la revendication 18, caractérisé en ce que la masse de fibre ou de filament s'élève au maximum à 10 mg/mm de longueur de filtre et/ou la frisure résiduelle du matériau de filtre ne dépasse pas la valeur de 1,45, sachant qu'on applique la formule suivante : I R = 10 000 × m A / G × I
    Figure imgb0011
    dans laquelle mA [g] représente la masse de fibre ou de filament, G [g/10exp4 m] le titre global et I [mm] la longueur de filtre.
  20. Filtre pour fumée de tabac selon la revendication 19, caractérisé en ce que la frisure résiduelle se situe entre 1,05 et 1,4, en particulier entre 1,1 et 1,3.
  21. Filtre pour fumée de tabac selon au moins l'une des revendications 18 à 20, caractérisé en ce que le rapport masse de fibre ou de filament - résistance à la traction S, rapporté au titre du filament, s'élève au maximum à 2, en particulier se situe entre 0,8 et 1,3.
  22. Filtre pour fumée de tabac selon au moins l'une quelconque des revendications 18 à 21, caractérisé en ce que la masse de fibre ou de filament s'élève au moins à 4 mg/mm de longueur de filtre, en particulier se situe entre 5 et 8 mg/mm de longueur de filtre.
  23. Filtre pour fumée de tabac selon au moins l'une des revendications 18 à 22, caractérisé en ce que la dureté Filtrona se situe entre 90 et 95, en particulier entre 91 et 93.
  24. Filtre pour fumée de tabac selon au moins l'une des revendications précédentes, caractérisé en ce qu'il contient un additif photoréactif, en particulier sous la forme de dioxyde de titane à fines particules du type Anatas présentant une dimension de particule moyenne de moins de 2 µm.
EP05797962A 2004-10-06 2005-10-06 Filtre ou element filtrant de fumee de tabac ayant une teneur en additifs Not-in-force EP1796488B1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE102004048651A DE102004048651A1 (de) 2004-10-06 2004-10-06 Tabakrauchfilter oder -filterelemente mit einem Gehalt an Zusatzstoffen
PCT/EP2005/010775 WO2006037640A2 (fr) 2004-10-06 2005-10-06 Filtre ou element filtrant de fumee de tabac ayant une teneur en additifs

Publications (2)

Publication Number Publication Date
EP1796488A2 EP1796488A2 (fr) 2007-06-20
EP1796488B1 true EP1796488B1 (fr) 2008-12-24

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US (1) US20080251091A1 (fr)
EP (1) EP1796488B1 (fr)
JP (1) JP4195721B2 (fr)
KR (1) KR100917283B1 (fr)
CN (1) CN101035444B (fr)
AT (1) ATE418275T1 (fr)
DE (2) DE102004048651A1 (fr)
ES (1) ES2318553T3 (fr)
RU (1) RU2380993C2 (fr)
WO (1) WO2006037640A2 (fr)

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BR112021000644A2 (pt) * 2018-08-14 2021-04-06 Daicel Corporation Fibra de acetato de celulose, fita de acetato de celulose, e método para produzir uma fita de acetato de celulose
CN111688960B (zh) * 2019-03-12 2022-03-11 湖南中烟工业有限责任公司 一种聚合物基潜香缓释材料及其制备方法和在加热不燃烧烟草制品中的应用
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JP4195721B2 (ja) 2008-12-10
CN101035444B (zh) 2011-11-09
CN101035444A (zh) 2007-09-12
ATE418275T1 (de) 2009-01-15
DE102004048651A1 (de) 2006-04-13
EP1796488A2 (fr) 2007-06-20
US20080251091A1 (en) 2008-10-16
JP2008515411A (ja) 2008-05-15
WO2006037640A2 (fr) 2006-04-13
KR100917283B1 (ko) 2009-09-11
RU2380993C2 (ru) 2010-02-10
DE502005006341D1 (de) 2009-02-05
WO2006037640A3 (fr) 2006-06-15
ES2318553T3 (es) 2009-05-01
KR20070061836A (ko) 2007-06-14
RU2007116132A (ru) 2008-12-10
WO2006037640A8 (fr) 2006-09-28

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