JP2000236864A - Filter material for reducing injurious substance in tobacco smoke - Google Patents

Abstract

PROBLEM TO BE SOLVED: To obtain a filter which removes tar substances existing in concentrate phases and toxic substances contained in gaseous phases and does not reduce aromatic substances and flavor substances contained in tobacco smokes by using substances such as marble, activated carbon and porous clay as filter materials. SOLUTION: This filter for reducing injurious substances contained in tobacco smokes, especially the filter for producing tobacco such as cigarette, cigar or cigarillo and for a smoking auxiliary means such as the holder of a smoking pipe, cigarette or cigar, comprises three or more substances selected from marble preferably in an amount of 20-45%, activated carbon preferably in an amount of 35-60%, a porous clay such as expanded clay preferably in an amount of 5-25% and zeolite 24 preferably in an amount of 10-35%. The filter material is preferably formed as granules having a diameter of 0.1-2 mm, and preferably further contains cellulose fibers.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

The present invention relates to a filter material for reducing harmful substances in tobacco smoke. More particularly, the invention relates to tobacco production, such as cigarettes, cigars or cigarillos, and to smoking pipes,
The mouth of cigarettes and cigars (so-called,
It relates to a filter for smoking aids, such as "cigarette holders", Spitze). Accordingly, the present invention relates to a filter according to claim 1.

[0002]

2. Description of the Related Art When burning tobacco, tobacco smoke, which is an aerosol composed of a gas phase and a concentrate phase, is generated. The gas phase of tobacco smoke mixes relatively easily (zusamm
ensetzen). This gas phase contains harmful substances such as carbon monoxide (about 4.2%), hydrocyanic acid (about 0.16%), and ammonia (about 0.03%) in addition to nitrogen, oxygen, carbon dioxide, hydrogen, and a rare gas. %), Nitric oxide (0.02%), and traces of hydrogen sulfide. In contrast, in the concentrate phase, there are also the main components of the contents ("tars"), as well as the flavoring and odorous substances which form the tobacco aroma.

For a long time, smoke has long been known to be harmful to health. Which components of tobacco smoke play a significantly stronger observed effect in each individual, such as smoking habits, tobacco consumption and nature of the contents, is not yet fully elucidated. For predisposition to atherosclerosis, coronary (arterial) disease and myocardial infarction, and gastrointestinal disease
The statistically high incidence of smokers has been attributed to the effects of nicotine and, in part, also to the effects of carbon monoxide. Another toxic substance, hydrocyanic acid, inhibits the regeneration of ciliated epithelium in the respiratory tract and inhibits leukocyte formation.
A very frequent outbreak of tobacco smoke-related disease is associated with the phenolic, acid, aldehyde, and ketone portions of tobacco smoke.

In order to reduce the amount of harmful substances in tobacco smoke, filter cigarettes, filter cigarettes and filter cigarillos, as well as cigarette mouthpieces and cigarette mouthpieces and tobacco pipes have been developed. (Mundstueck)
The filter material should remove some of the nicotine and tar material, with substantially no flavor components being adsorbed. These filter materials include cellulose,
Cellulose acetate, polyethylene, crepe (crepe)
Or made of paper or activated carbon.

According to DE-OS 15 17 272, silicate-containing minerals, in particular clay, kaolin and feldspar, are used as adsorbents for tobacco filters. However, its disadvantage is that in order to be able to be incorporated, the filter materials described in that publication have their contained ions removed by treatment with distilled water or acid or via electrolysis or electrodialysis. That is something that must be done. In addition, the main tar substances in the concentrate phase,
And, to a lesser extent, toxic substances in the gas phase.

[0006] From AT-PS 368 686, a method for producing a clay-containing tobacco smoke filter is known. For that purpose, a mixture consisting of 40-90% by weight of clay, 5-20% by weight of broken blast furnace slag and 2-20% by weight of a porosity forming additive is mixed with an aqueous copper chloride solution and dried. Finally, the water was removed, the porous forming additive was burned or vaporized, and the copper oxide formed was heated and cooled. Blast furnace slag (Hochofenschlake)
Is usually about 35-48% calcium oxide, 30-3
8% silicon oxide, 6-18% aluminum oxide and minute amounts of magnesium oxide, manganese oxide, iron oxide,
Consists of diphosphorus pentoxide and calcium sulfate. The filter materials show a thorough mixing with them, consisting of clay, blast furnace slag and copper oxide. A disadvantage with this filter material is, in particular, that the concentrate phase of tobacco smoke and, in particular, flavor and odor substances are adsorbed therewith. Additional disadvantages also include labor and high manufacturing costs and additives such as copper chloride solutions containing heavy metals.

[0007] Further filter materials are known which form a thin film and consist of a binder (eg methylcellulose) and a microfibrous substance, which imparts adsorptivity. Activated carbon, silica gel, asbestos fiber or polyethylene glycol is known as an adsorbent.
These filter materials have the advantage of filtering out certain harmful substances, in this case predominantly phenol, by the introduction of a selectively acting adsorbent. The disadvantage is that, besides using a considerable amount of carcinogenic asbestos fibers, most of the flavor and odor substances of the tobacco smoke aroma are filtered off.

[0008] DE-OS 15 17 298 describes a filter material consisting of an activated carbon body having a maximum diameter of 0.1 to 2 mm. This material is bound via a binder such as polyvinyl urea or polyethylene. The disadvantage is also that this mainly removes not only tar substances and, together therewith, toxic gas phase components (eg carbon monoxide, hydrocyanic acid or ammonia), but also the aroma and odor substances of the aroma of tobacco smoke. I do.

[0009] According to DE-GM 87 06 686, a filter material consisting of a mixture of activated carbon particles and sponge, ie sepiolite, is described. The sepiolite acts to reduce tar substances, harmful substances and nicotine and odorants. Sponge contains a lot of moisture in addition to tar substances and nicotine. The binding of water enhances the adsorption of activated carbon on odorous substances, harmful substances and tar substances. However, disadvantages also exist, in addition to the odorants of the tobacco smoke aroma, the flavor substances are also filtered off.

[0010] DE-OS 29 25 001 describes clay as filter material. The clay can be used due to its gel-forming and film-forming properties on a supporting material such as cellulose acetate fibers or paper. The determinant for its use is its swellability (Quell
barkeit). Therefore, mainly bentonite such as sodium montmorillonite and sodium attapulgite is suitable.

WO 96/07335 A1 describes a filter consisting of a zeolite having hydrophobic properties. This filter material is incorporated in combination with activated carbon or cellulose. In particular, filters containing either pure silica gel or pure activated carbon are also known.

[0012] The above-mentioned filter materials have drawbacks, reducing mainly the tar substances in the concentrate phase and, to a lesser extent, the toxic substances in the gas phase. The flavor and odorants that form this tobacco smoke aroma are eventually present in the concentrate phase,
And since it is reduced with the tar substance, the incorporation of the above filter materials also has a negative effect on the smoking taste. A further disadvantage is that the filter material described above acts shortly as a filter. Currently in cigarettes and cigars, and
Filter materials, which are incorporated into tobacco pipes and are used accordingly many times, have a high degree of saturation and, consequently, a loss of filtration, which is achieved relatively quickly,
It is almost unrecognizable in appearance. In addition, for individual filter materials, smokers must use higher suction. This is because the filter material is very dense and tobacco smoke does not flow without disturbing the filter material.

[0013]

SUMMARY OF THE INVENTION The present invention not only improves the reduction of tar substances present in the concentrate phase as much as possible,
It is an object of the invention to produce a filter material which performs the function of complete removal of toxic substances in the gas phase, but which does not reduce the tobacco smoke aroma and thus the flavor and odor substances. Furthermore, it is an object of the invention to produce a filter material which guarantees a long filtration action. This filter material shows the wear of the filter, and when smoking,
Ensures that tobacco smoke passes easily without requiring the smoker to use strong suction.

[0014]

These objects are achieved by the characterizing features of claim 1. Further configurations and advantageous properties are given by the dependent claims. The details are as follows.

In one aspect, the invention is a filter for reducing harmful substances in tobacco smoke, especially for tobacco production such as cigarettes, cigars or cigarillos, and smoking pipes, cigarettes and cigarettes. Filter for a smoking aid, such as a mouthpiece, wherein the filter material comprises at least three of marble, activated carbon, porous clay or zeolite.
A filter composed of two substances.

In one embodiment, in a filter of the invention, the filter material comprises 20-45% marble, 35-60% activated carbon, 5-25% porous clay and / or 10-35% zeolite. Consists of

In another embodiment, the filter material is formed as particles having a particle size between 0.1 and 2 mm in diameter.

In another embodiment, the filter material is formed as a press.

[0019] In another embodiment, the filter material further comprises cellulosic fibers.

[0020] In another embodiment, the cellulosic fibers are arranged in parallel, and the cellulosic fibers run through the filter in the machine direction without changing direction.

In another embodiment, the cellulosic fibers run longitudinally through the filter, where the cellulosic fibers run back and forth, changing direction multiple times.

In another embodiment, the filter material is formed as granules and is disposed on and / or in channels (Kanals) and / or voids formed from sole cellulose fibers.

In another embodiment, the filter material is formed as fine particles from marble, activated carbon, porous clay, or zeolite.

[0024] In another embodiment, in the filter of the present invention, the porous clay is expanded clay (Blaht).
on).

In another embodiment, a zeolite having no fine fiber structure is used in the filter of the present invention.

In another embodiment, the constituents of the filter material can be incorporated as a multiphase system without mixing with one another.

In another embodiment, the constituents of the filter material can be incorporated mixed with one another as a mixed phase system.

In another embodiment, the filter material can be incorporated without activation.

[0029] In another embodiment, the filter includes a consumption indicator.

[0030] In another embodiment, the consumption indicator comprises marble.

[0031] In another embodiment, the consumption indicator comprises cellulose.

[0032] In another embodiment, the consumption indicator is located in the direction of flow behind the filter material.

In another embodiment, at least one Venturi tube is located on or in the filter.

[0034] In another embodiment, the filter of the present invention has a surface located directly behind the Venturi tube, through which accelerated tobacco smoke flows to the Venturi tube.

In another embodiment, the Venturi tube and / or the surface located behind the Venturi tube comprises marble, activated carbon, clay, zeolite, and / or cellulose.

[0036]

DETAILED DESCRIPTION OF THE INVENTION Filters for tobacco products such as cigarettes, cigars or cigarillos and for smoking aids such as tobacco pipes, cigarette mouthpieces and cigarette mouthpieces. With the proper use of at least three substances of marble, activated carbon, clay or zeolite as material, the aroma and odor of tobacco smoke are not negatively affected and the harmful effects of the concentrate phase and especially the gas phase are not affected. A very strong reduction of the substance is achieved.

In fact, the use of at least three of the above-mentioned substances as a filter material provides an improvement in the filtering action over the use of each alone. This improvement in the filtering action results from the fact that a single substance in its activity, ie its action of adsorbing harmful substances, has a positive effect on each other. One substance may facilitate concentrate formation, while another adjacent substance may irreversibly adsorb harmful substances in the same house.

The properties of the filter are thus enhanced according to the added mass of the single components. Its composition varies at certain limits. So, for example,
The portion of the activated carbon particles is set such that the impact on the flavor and odor substances remains as small as possible.

Thus, a further embodiment is that the filter material is 20-45% marble, 35-60% activated carbon, 5%
It is also contemplated to be comprised of ２５25% porous clay and / or 10-35% zeolite.

[0040] Filter materials composed of these amounts exhibit very good synergy.

This filter material has a particle diameter of 0.1.
It can be formed as 1-2 mm grains.

The upper limit of the particle size should be improved so that a sufficient packing density and a sufficient degree of packing are achieved and also that mixing or at least partial penetration of the filter material can take place. The lower limit should avoid and impede the resistance of too high a flow such that very small parts are entrained and removed by the flow and the filter remains.

However, the filter material can also be formed as a pressed product.

This has the advantage that the filter can be filled with the filter material in an equal amount, filled with voids and with good reproducibility. Thereby,
Tobacco smoke flowing into the filter is prevented from flowing through the filter at a nearby location and without contact with the filter material.

It is further contemplated that the filter material further comprises cellulose fibers.

Cellulose fibers are heretofore known as filter materials and have the property of reducing harmful substances in the concentrate phase. The fraction of cellulose in the mixture is limited by the following: in the more commonly used parts, the suction power of the smoke used by the smoker is strongly increased, while at the same time exhibiting the flavor and odor of the remaining tobacco .

As for the toxic substances in the gas phase, only the cellulose fibers themselves have a suitable effect. However, in combination with the filter material described above, it serves to improve the reduction of tar substances present in the concentrate phase and to further remove toxic substances in the gas phase, whereby the aroma of tobacco smoke and thus Flavor and odor substances are not reduced.

As a result, the cellulose fiber is
It provides a direction of tobacco smoke flow in the filter and results in internal contact of the tobacco smoke with the rest of the filter material. Thereby, it is avoided that the tobacco smoke flows past the less granular filled arrangement without contact with the filter material.

For this purpose, the cellulosic fibers can be arranged in parallel and allowed to flow through the filter without changing the direction in the machine direction.

In this way, it is achieved that the tobacco smoke flows uniformly through the filter and comes into contact with the filter material. With this arrangement, the cellulosic fibers form long-distance channels, where the flow resistance is kept very low.

In addition, it is also possible for the cellulose fibers alone to penetrate the filter in the longitudinal direction, and thereby flow forward and backward with multidirectional changes.

In this case, the void space and the channel for changing the direction are formed from the cellulose fiber, and as a result,
Tobacco smoke flowing into the filter must travel a long way until it leaves the filter, and more frequently comes into contact with the filter material. Therefore, more concentration and adsorption events can occur in the filter material.

[0053] In a preferred embodiment, the filter material is present as granules and is located on and / or in channels and / or void spaces formed of sole cellulose fibers.

Since the passage of tobacco smoke in the filter is provided by the cellulose fibers, the tobacco smoke is
Optimal contact with the filter material is provided.

Improved contact is achieved by the filter material being formed as a fine powder from marble, activated carbon, porous clay or zeolite. This fines is more easily brought into the filter, especially when using cellulose fibers.

[0056] Further formations are also contemplated where the porous clay used as a filter material is an expanded clay (Blahton).

For the production of expanded clay, the raw clay separated from the crude material is homogenized and miniaturized by adding water. Then, the raw material rotary furnace (Drehroh
In the case of, the clay is dried at about 800 ° C. and formed by a special rotation method. In the subsequent firing stroke, the clay expands at about 1200 ° C.

The advantage of using expanded clay instead of other porous clays is that expanded clay is produced by a manufacturing method without chemical additives.

In the expanded clay, the air compartments and air channels run, and there are no chemical residues. Thereby, the surface of the expanded clay is better suited for the adsorption of harmful substances present in tobacco smoke than other porous clays. The tiny channels are then
Facilitates concentration and precipitation of harmful substances contained therein.

In addition, expanded clays are distinguished by their lower swellability and thereby the stability of the associated formation, which enhances the duration of the filtration action. The large surface area of the expanded clay guarantees its long filtration action due to the large contact area between the filter material and the cigarette smoke. The suction power that smokers use when smoking is
It does not change measurably with the use of expanded clay. The smoke flows undisturbed by the filter material upon sufficient surface contact.

In a further embodiment, zeolites without fine fibrous structure are used. Thereby, the fine fibers are loosened and the flow is reduced and inhalation is avoided.

By using zeolites as filter material, minimization of harmful substances in the concentrate phase and the gas phase is achieved. Here too, materials are used that are significantly suitable for filtering out harmful substances of tobacco smoke by means of their surface structure, which is distinguished by voids and channels, with a small effect on the aroma of tobacco smoke. You.

Other silicate-containing minerals (eg, Kies
The advantage of the zeolites over e.g. elgel and clay is the surface structure, which exhibits excellent hydration, ion exchange and molecular sieving properties. This improves the reduction of harmful substances in the gaseous and concentrate phases of tobacco smoke compared to conventionally marketed silicate-containing filter materials.

A further form is that the substances forming the filter material can be incorporated in the multiphase system without being miscible with one another.

Thereby, it is achieved that the filtering action and the capacity of the filter are enhanced. For example, in a two-phase system, in the first phase harmful substances of tobacco smoke are removed and filtered. This harmful substance would otherwise negatively affect the filtering action in the second phase and the performance of the filter. Correspondingly, in a multiphase system, the arrangement of the phases can be set such that the best possible positive effect of the filter materials on the reduction of tobacco smoke harmful substances is achieved.

In addition, the substances forming the filter material can also be incorporated so as to be miscible with one another in a multiphase system.

It is thereby achieved that the filtering action and the capacity of the filter are enhanced in such a way that they are selective for the individual harmful substances. Preferably, this is due to the narrow contact between the filter materials and the resulting positive effect of their filtering action and filter capacity on each other.

It is further contemplated that the filter material can be incorporated without activation.

This achieves that no conventional treatment of the filter material (acid, leaching or washing with water, heating, swelling, homogenisation, drying, etc.) is necessary. This generally means cost savings.

[0070] Preferably, the filter includes a consumption indicator.

The optical end of the ability of the filter material to accept harmful substances is thereby indicated. At a given indication, the filter should be replaced. Because
This is because the adsorption properties of the filter material will be too low to effectively minimize the harmful substances of tobacco smoke.

In a practical implementation, the consumption indicator may consist of marble.

The end of the ability of the filter material to accept harmful substances is thereby indicated by the marble coloring from light to dark. At a given color depth, the filter should be replaced.

Cellulose also has properties equivalent to marble. Here, too, the predetermined darkness indicates the end of the capacity of the harmful substance.

Preferably, a consumption indicator is arranged in the flow direction behind the filter material. This arrangement has the following advantages. An optical change occurs first, at which time the filter material is almost exhausted. However, then a very rapid envelopment occurs in the consumption indicator, which clearly signals the end of filter availability.

A further embodiment contemplates that at least the Venturi tube is located on or in the filter.

Thus, the tobacco smoke stream entering the filter is first accelerated in the narrow part of the filter and finally decelerated in the widened part. Due to the combined turbulence, on the narrowest cross section of the filter, the tobacco smoke is completely miscible with the filter material present here,
Thereby, the harmful substances are quickly and completely brought into contact with the filter material and adsorbed.

Furthermore, a surface is arranged directly behind the Venturi tube, to which the flowing tobacco smoke flows.

In practice, the toxic substances of the concentrate and gas phases present in tobacco smoke encounter faster at the surface located behind the Venturi tube and settle there.

An improved filtering action is achieved in that the venturi and / or the surface located behind the venturi consist of marble, activated carbon, clay, zeolite and / or cellulose.

[0081]

DESCRIPTION OF THE PREFERRED EMBODIMENTS Each of the filters shown in the figures has a cylindrical container 10, which is provided with a mouthpiece (Mund).
The stake is attachable or combined or manufactured with the cigar tobacco. The container 10 is enclosed via a first end 12 and a second end 14. This secures the material present in the container 10. The ends 12 and 14 are provided with holes 16 which allow the tobacco smoke to pass but retain the material present in the container 10. In the filter zone 18 the filter material is present, while in the indicator zone 20 a consumption indicator 28 is arranged. This tobacco smoke passes through the filter in the direction shown from left to right. As a result, the tobacco smoke then flows through the filter zone 18 and then through the indicator zone 20.

Example 1 In the filter shown in FIG. 1, a mixed phase system is used. In the filter zone 18, the filter materials are arranged in a mixture. Expanded clay, zeolite and activated carbon are used individually and they are provided in granular form. Particle size is 0.1mm ~ 2
mm. The mixed phase system is then particularly preferred when a mechanical filling of the container 10 with the filter material is made, whereby a uniform relationship of the individual filter material parts is desired. The filter zone 18 is covered by an indicator zone 20, which in this case is provided with an indicator material 28,
Filled with marble. Here too, grains are used.

(Embodiment 2) The filter shown in FIG. 2 uses a multi-phase system. In filter zone 18,
The filter material is arranged in many layers separately from each other. In the example shown, first the layer 2 with activated carbon
6, then a layer 24 with zeolite and finally a layer 22 with expanded clay are arranged. Then again,
These three layers are repeated twice, but arranged in a different column order. This embodiment is preferred for manual filling. The indicator zone 20 lined up with the filter zone 18
It corresponds to that shown in FIG. Also in FIG. 2, the filter material shows a granular shape. The range of the diameter is the same as that shown in FIG.

(Embodiment 3) In the filter shown in FIG.
A mixed phase system as shown in FIG. 1 is used. In addition to FIG. 1, the filter materials to be arranged are arranged in parallel, and the cellulose fibers 30 running in the longitudinal direction are brought into the filter container 10. Cellulose fibers 30 are suitable for conducting tobacco smoke through the filter in a desired manner for the filtering action. In doing so, tobacco smoke likewise flows through the filter and comes into contact with the filter material. In this arrangement, the cellulosic fibers 30 form channels running in the longitudinal direction, so that the flow resistance is kept very low.

(Embodiment 4) The filter shown in FIG. 4 uses a multiphase system as shown in FIG. In addition to FIG. 2, the arranged filter material introduces individual cellulosic fibers 30 into the filter vessel 10 in the longitudinal direction. This material flows back and forth, changing direction many times.

The cellulose fibers form voids and channels that change direction. As a result, the flowing tobacco smoke must be returned longitudinally to the end of the filter container 10, with more frequent contact with the filter material.

SUMMARY OF THE INVENTION A filter for reducing harmful substances in tobacco smoke is described. The filter material comprises at least three substances of marble, activated carbon, porous clay, or zeolite. This filter is suitable for tobacco devices such as cigarettes, cigarettes or cigarillos and for smoking aids such as tobacco pipes, cigarette mouthpieces and cigarette mouthpieces.

[0088]

According to the filter of the present invention, the tar substance present in the concentrate phase is removed as much as possible and the effect of the complete removal of the toxic substances in the gas phase is obtained, while the aroma of tobacco smoke and the odor of the cigarette smoke are eliminated. The property of not reducing flavor and odor substances is achieved.

[Brief description of the drawings]

Embodiments of the present invention will become more apparent with reference to the following drawings.

FIG. 1 is a longitudinal sectional view across a filter having a mixed phase system.

FIG. 2 is a longitudinal sectional view across a filter having a multiphase system.

FIG. 3 is a longitudinal sectional view across a filter having a mixed phase system and longitudinally running cellulose fibers.

FIG. 4 is a longitudinal cross-sectional view across a filter having a multiphase system and a cellulose fiber that changes direction.

 ──────────────────────────────────────────────────続 き Continuation of the front page (71) Applicant 500071278 Erlengrundstrasse 45, D-31542 Bad Nendor rf, Germany (71) Applicant 500071304 Bahnhofstrasse 6, D-31535 Neustadt, Germany, Germany, Germany Nendorf Day 31542, Ahren Grandstrasse 45 (72) Inventor Hans-Peter Brown Germany Noustadt Day 31535, Bahnhofstrasse 6

Claims (21)

[Claims] 1. A filter for reducing harmful substances in tobacco smoke, in particular for tobacco production such as cigarettes, cigars or cigarillos, and for smoking pipes, cigarettes and cigarette mouthpieces. A filter for a smoking aid, wherein the filter material is composed of at least three substances of marble, activated carbon, porous clay or zeolite. 2. The filter according to claim 1, wherein
The filter material is 20-45% marble, 35-35%
A filter composed of 60% activated carbon, 5-25% porous clay and / or 10-35% zeolite. 3. The filter according to claim 1, wherein the filter material has a diameter of 0.1 to 2 mm.
A filter formed as particles having a particle size between 4. The filter according to claim 1, wherein the filter material is formed as a pressed product. 5. The filter according to claim 1, wherein the filter material further includes a cellulose fiber. 6. The filter according to claim 5, wherein
A filter, wherein the cellulosic fibers are arranged in parallel and the cellulosic fibers are running through the filter in a machine direction without changing direction. 7. The filter according to claim 5, wherein the cellulosic fibers run longitudinally through the filter, wherein the cellulosic fibers change direction several times before and after. Running on the filter. 8. The filter according to claim 5, wherein the filter material is formed as granules and is formed on and / or from a single cellulose fiber. (Kanal)
And / or a filter disposed in the void. 9. The filter according to claim 1, wherein the filter material is formed as fine particles from marble, activated carbon, porous clay, or zeolite. 10. The filter according to claim 1, wherein the porous clay is expanded clay (Bl).
aehton). 11. The filter according to any one of claims 1 to 10, wherein zeolite having no fine fiber structure is used. 12. The filter according to claim 1, wherein the constituents of the filter material can be incorporated as a multiphase system without being mixed with one another. 13. The filter according to claim 1, wherein the constituents of the filter material can be mixed and incorporated with each other as a mixed phase system.
filter. 14. The filter according to claim 1, wherein the filter material can be incorporated without activation. 15. The filter according to any one of claims 1 to 14, wherein the filter comprises a consumption indicator. 16. The filter of claim 15, wherein the consumption indicator comprises marble. 17. The filter of claim 15, wherein said consumption indicator comprises cellulose. 18. The filter according to claim 15, wherein the consumption indicator is arranged in the direction of flow behind the filter material. 19. The filter according to claim 1, wherein at least one Venturi tube is arranged on or in the filter. 20. The filter according to claim 19, wherein a surface is disposed directly behind the Venturi tube, through which accelerated tobacco smoke flows. 21. The filter according to claim 19 or 20, wherein the Venturi tube and / or the surface arranged behind the Venturi tube comprises marble, activated carbon, clay, zeolite and / or cellulose. ,
filter.