RS50150B - SMOKING PRODUCT - Google Patents

Abstract

A filter cigarette with a wrapped bundle of tobacco and a filter (20) with a means of ventilation, consisting of at least two parts (22, 23) of the filter, the means of ventilation being located in the area of the lip part (22) of the filter and the lip part 22) of the filter is at least a one-piece filter, and the filter part (23) towards the blow bundle is a coaxial part with a core (24) and a casing (26), characterized in that the blow bundle (11) is a one-piece bundle and the pressure drop on the core (24) less than the pressure drop on the casing (26). The application contains 14 dependent patent claims

Description

DESCRIPTION OF THE INVENTION

This invention relates to a filter cigarette that is ventilated.

The filter solutions applied to cigarette filters, which consist of several filter defs of different material properties, are applied according to older techniques to solve racially set tasks. Therefore, the airing of the filter is used to create milder smoke and reduce the intake of harmful substances.

EP 474 940 B2 as well as EP 608 047 BI describe cigarette filters, in which the middle part of the core consists of a material different from the material of the casing. These cigarette filters are called core filters or coaxial filters. In one of the forms, the embodiment of EP 474 940 B2 (FIG. 5) the filter consists of two longitudinal sections of the filter, namely the vented core part of the filter and one lip one-piece section, wherein the lip one-piece section has an aesthetic role. The disadvantage of the mentioned cigarette filters lies in the fact that, in any case, the cover of the inner core (core-section) consists of one material, which allows smoke to pass through, so that the smoke can flow perpendicularly to the boundary surface between the core and the cover of such a (core) filter.

EP 0 SSS 166 BI describes a vented filter cigarette, which also has a lip section and a fiber section. This filter cigarette, however, has a cavity between the two filter elements, which is filled with some adsorption agent (e.g. acrylic carbon). This has the effect that passing through the adsorbent means the taste and composition of the smoke changes drastically, which is unacceptable for many smokers.

EP 0 SSO 904 Al and DE 39 01 226 Cl fulfill, with the help of a coatheial arrangement of both tobacco fibers and filters, the task of creating a cigarette with particularly low tonnage values, which is primarily achieved by the coaxial solution of the tobacco bundle. The disadvantage of this solution, however, is the high cost of the production equipment necessary for the production of a coaxial beam.

EP 539 191 BI sets itself the task of creating an aerated filter cigarette with a particularly low weight (low mass). The disadvantage here is that the density of the applied materials (both the tobacco stack and the filter) must be reduced to a minimum in order to obtain a truly particularly light cigarette, which greatly limits the possibilities of variations in the equipment of this type of cigarette. Here, the ventilation zone is located in the ficker part towards the lady beam.

The task of this invention is to achieve a ventilated. a cigarette, which does not have the above-mentioned disadvantages and whose ficker element affects the reduction of the phase of smoke with particles (such as, for example, nicotine) and at the same time achieves an extremely large reduction in the gas nm composition of the smoke, whereby the filtered smoke should retain an acceptable taste composition for the consumer.

In addition, this ficker should take advantage of the above-mentioned advantages in terms of the wide range of possible variations in sensory, taste and optical performance.

A further task consists in separating the drag resistance (smoke) of the fiker itself from its action, i.e. to achieve an increase in the ability to retain smoke components, without a high increase in drag resistance, as is the case with current fickers, which must be taken into account.

Another task of this invention was to create a product with the above-mentioned advantages, in which there will be no fillers in the general area, especially those made with afornic coal, both for sensory and taste reasons.

The solution to this task is a fictitious cigarette of the type mentioned at the beginning, which in addition possesses the indicative properties from Patent Claim 1.

The invention will be described with the help of the attached examples.

Figure 1 shows a schematic view of a filter cigarette according to the present invention.

SI.2 shows a schematic view of a further embodiment of a filter cigarette according to the invention.

This filter cigarette consists of one part with a bundle (tobacco) 10 and one ficher 20. The bundle 10 consists of one bundle of tobacco 11 and one wrapper 12 of that bundle 11. The filter 20 consists of at least two filter parts 22 and 23 and binding with the bundle 10 with a strip of paper 13, which is at least 3 mm longer than the filter 20. Usually the bundle of tobacco is 11 is between 55 and 75 mm long, while the length of filter 20 is between 21 and 27 mm.

The filter 20 is vented on its mouth side (toward the mouth). Memventilation can be selected in the range from 10 to 90 %.

In the area of the mouth part 22 of the filter, a paper cover 13 with holes 14 for ventilation is provided as a ventilation solution, which are arranged in 1 to 3 rows, preferably 2 rows of holes around the circumference of the filter 20, while in the area of the part 23 towards the tobacco bundle, the paper cover 13 is completely impermeable. Air for ventilation is sucked into the filter 20 through the holes 14 for ventilation, which leads to a disproportionate reduction of the components of the gas phase of tobacco smoke compared to the size of the particles. In one of the forms of execution, the aerating means can extend a little, up to about 2 mm, beyond the length of the mouth part of the filter towards the part with the tobacco bundle. At the same time, the air 2a for ventilation is also sucked into the lip part 22 of the filter, after one deflection of the flow.

A person skilled in the art is familiar with how vent holes are produced, e.g. mechanically or electrostatically, using a laser. Another, also well-known, means of planning are tubes, carded with corrugated materials.

The lip part 22 of the filter consists of at least one filter section. The mouth part 22 of the filter part can consist of two more filter sections, as shown in fig. 2. This provides the possibility of greater variations, such as, for example, the possibility to add another 22a to the lip part 22b, which has a visible ribbing on its cross-section

coloring.

The fiber part 23, which is in the form of a coaxial fiber, has a core 24 and a sheath 26, which surrounds the core. Core pressure drop. 24 can be between 101 50 mmVS. The casing is shaped in such a way that the pressure drop on it is at least 2 times higher than that of kro2ezgro 24. The casing can also be essentially impermeable to smoke. The outer surface of the core 24 is substantially smoke impermeable or is wrapped with a smoke impermeable layer.

The solution of part 23 of the ficker towards the beam means that the smoke easily flows through the core 24. By narrowing the cross-section, the speed of the smoke flow through the core increases noticeably, which in itself causes an increase in the resistance to smoke drawing, with a relatively small retention. An analogous effect is achieved when the cross-section of the material through which the smoke flows is narrowed, making the core of the coaxial fiker plug almost impermeable and then the total amount of smoke current passes exclusively through the jacket.

Only after a multiple increase in the speed of the simple flow of smoke through the part 23 of the cigarette holder towards the bundle, the air for ventilation is introduced through the mouth part 22 of the holder. in a large amount with the help of an aerating agent 14. This achieves a disproportionate decrease in the component defs of the gas in relation to the part of the particles in the same, while at the same time, acceptable drag resistances for the smoker are created.

Contrary to the state of the art, the possibilities of variations of performance within the set goal are extremely numerous, since in the fake cigarette according to the invention, a disproportionate decrease of the gas phase occurs without significant influence on the draw (smoke), so that, for example, the typical "taste of air<*>" as described by smokers is absent.

As materials for fickers 20, plate-like, fibrous and granulated fibers of ficker material come into consideration, such as cellulose, cellulose ester, preferably cellulose acetate, ficker material McBlown (melt blown), manufactured, for example, according to WO97/33026, ficker material AMaid, e.g. manufactured according to US Patent 4,375,447, additive-replaceable ficker materials, tobacco, e.g., according to DE 199 25 968, reconstituted tobacco, other degradable materials, thermoplastic ficker fibers.

The addition of additives may serve to improve the sensory, taste or optical properties of the cigarettes according to the invention and/or to have an additional effect on selective retention. Thus, for example, the ficker part 22 can be equipped with activated carbon particles, with the aim of increasing the adsorption of the gas phase. In order to increase the acceptability of the cigarette by the consumer, by means of optical means, the mouth part of the filter can, for example, be colored. By adding acids and bases, the pH value of the spectrum of the particles, and thus the taste impression, can be affected.

The addition of additives can be done by dispersing them by spraying filter materials, e.g., fibers, or by mixing them directly into a bundle of materials.

As additives with filter material come into consideration: aromas, acids and bases in suspended and dissolved form, additives with a selective retention effect of adsorbents, such as activated carbon, SiO2- Further additives with a selective retention effect are organic acid bases, e.g., hydroxycarboxylic acid and its salts, metal and metal oxides, nitrogen components, ion exchange systems (e.g. zeolites), alcohols, polyphenols and porphyrin derivatives.

Further additives, such as softeners such as, e.g., triacetin, triethylene glycol acetate or diester of citric acid, additives for accelerating photodegradation, e.g., titanium dioxide, additives that support biological degradation, vitamins and/or color pigments, come into consideration for individual coating of the desired filter solution.

As a range of forms of execution of cellulose acetate specifications, the following are considered: 2a core 24 with a singlet titer in the range of 3.0 to 8.0 den, pure<p>recommended 8.0 den and a total titer in the range of 15000 to 50000 den, recommended 17000 den. For sheath 26 individual titer from 1.5 to 3.0 den, recommended 2.1 den and total titer from 40000 to 75000 den, recommended 55000 den.

The range of individual titers for the mouth part of the filters 22 in the case of cellulose acetate as filter material, which can be of two or more segments of the same different type 22a and 22b, is 1.5 to 5 den and the total titer is 15,000 to 60,000 den.

Example 1 .

Cigarette A has a tobacco bundle 11 with a length of 63 mm and a multi-part filter 20 with a length of 21 mm.

Je2gro 24 filter part 23 towards the tobacco bundle has a diameter of 5.5 mm and a length of 8.0 mm. It consists of cellulose acetate with an individual titer of 6.0 den in a total titer of 17,000 den. The smoke drag of core 24 was 27mmVS.

The coaxial jacket 26 of the core 24 had an inner diameter of 5.5 mm and an outer diameter of 7.8 mm at a length of 8.0 mm. The material used was cellulose acetate with an individual titer of 2.1 den and a total titer of 55,000 den.

In summary, the toaxial part was 8.0 mm long with a length of 7.8 mm.

The mouth part of the filter 22 was of one piece and consisted of cellulose acetate. It was 7.8 mm in diameter and 13 mm long. in the area of the mouth part of the filter, ventilation was provided in the form of a series of laser perforations. Airing through the filter of cigarette A was 35%.

Example 2:

In order to evaluate cigarette A from Example 1, smoke analysis data were determined and compared with the same cigarette VI, equipped with an ordinary cellulose acetate filter 21 mm long and a single titer of 3.0 den, as well as with filter ventilation of 18%, and was used for smoking according to ISO standards. Table 1 shows the results of the smoke data.

Example 3:

Cigarette B had a tobacco bundle 59 mm long and one multi-part filter 20 25 mm long.

The core 24 of the part 23 to the beam was diam. 5.5 mm at a length of 10.0 mm. It consisted of cellulose acetate with a partial titer of 6.0 den and a total titer of 17,000 den. The tensile strength on core 24 was about 25mmVS.

The coaxial sheath 26 of the core 24 had an inner diameter of 5.5 mm and an outer diameter of 7.8 mm and was also 10 mm long. Cellulose acetate with an individual titer of 2.1 den and a total titer of 55,000 den was used as the material.

In total, the ficker part 23 was 10.0 mm long and 7.8 mm wide.

The lip part of the 22 filter was one-piece and made of cellulose acetate. It had a diameter of 7.8 mm and a length of 15 mm. In the area of the mouth part 22 of the filter, there was a zone of ventilation in the form of rose openings, for ventilation 14, produced by laser perforation. The ficker ventilation of cigarette B was 51%.

Example 4:

In order to evaluate cigarette B, the smoke analysis data were determined and compared with the data of cigarette V2, equipped with a common cigarette made of cellulose acetate with a length of 25 mm, an individual titer of 3.0 den and with a cigarette ventilation of 38%, in which it was smoked according to ISO standards. Table 2 summarizes the smoke data.

From the example, it is clear that the reduction of the participation of the components of the gaseous phase of cigarette smoke in relation to the participation of particles is disproportionately large with the help of the new solution of fiker.

Claims (15)

1. A filter cigarette with a wrapped bundle of tobacco and one filter (20) with an aerating means, which consists of at least two parts (22, 23) of the filter, wherein the aerating means is located in the area of the mouth part (22) of the filter and the mouth part (22) of the filter is at least a one-piece filter, and the filter part (23) towards the tobacco bundle is a coaxial part with a core (24) and the envelope (26), indicated by the fact that the bundle (11) is a one-piece bundle and that the pressure drop on the core (24) is smaller than the pressure drop on the envelope (26). 2. Filter cigarette according to Claim 1, characterized in that the mouth part (22) of the filter consists of plate, fibrous, granular or degradable filter material. 3. Filter cigarette according to Claim 2, indicated by the fact that the filter material is cellulose, cellulose ester, preferably cellulose acetate, filter material obtained by the "melt-blown" process, filter material that is exposed to air, filter material with additives, tobacco, other filter materials that are easily processed or thermoplastic filter fibers. 4. Filter cigarette according to Claims 2 and 3, characterized in that the filter material is mixed with an additive. 5. Filter cigarette according to Claim 4, characterized by the fact that aromatic substances, acids or bases in suspension or solution, or adsorbents with selective action, such as activated carbon or SiO2, are used as additives. 6. Filter cigarette according to one of Claims 1 to 5, characterized by the fact that the core (24) of the coaxial filter part (23) to the tobacco bundle consists of a fiber material of low fineness, wherein the thickness of the individual fiber is in the range of 3.0 to 8.0 den, and the total thickness of the thread is in the range of 15000 to 50000 den. 7. Filter cigarette according to Claim 6, characterized by the fact that the thread thickness of the individual fiber is 6.0 denier, and the total thread thickness is about 17000 denier. 8. A filter cigarette according to one of Claims 1 to 5, characterized by the fact that the cover (26) of the coaxial part (23) of the filter towards the tobacco bundle consists of fibrous material with a thickness of individual fibers in the range of 1.5 to 3.0 deniers, and a total thickness of threads in the range of 40,000 to 75,000 deniers 9. Filter cigarette according to Claim 8, characterized by the fact that the thickness of individual fibers is 2.1 den, and the total thickness of threads is about 55000 den. 10. A filter cigarette according to claim 1, indicated by the pressure drop ratio through the core (24) compared to that through the casing (26) is greater than 2. 11. Filter cigarette according to Claim 10, characterized by the fact that the pressure drop ratio through the core (24) in relation to that through the casing (26) is about 6. 12. A filter cigarette according to claim 1, characterized in that the outer surface of the core (34) is covered with an air-impermeable layer or is itself impermeable to air. 13. Filter cigarette according to Claim 1, characterized by the fact that the reduction in gas phase components is achieved by aeration, and is between 10 and 90%. 14. Filter cigarette according to Claim 13, characterized by the fact that the reduction in gas phase components is achieved by aeration, and is between 10 and 50%. 15. Filter cigarette according to claim 1, characterized by the fact that the means for ventilation pass from the mouth part (22) of the filter to the part (23) towards the tobacco bundle, with the air flow diverting into the mouth part (23).