SK26396A3 - Ventilated filter cigarette - Google Patents

Abstract

A ventilated filter cigarette has a multiple filter with a higher global retention provided in different sections with ventilation perforations. The ventilated filter cigarette contains a tobacco mixture of expanded tobacco having a high nicotine content. The tobacco mixture contains as constitutive element expanded tobacco lamina with a nicotine content from 1.0 % to 8 % and/or tobacco foil with a nicotine content from 5 % to 10 %, to which fruit acid is incorporated. The tobacco mixture has a nicotine content from 2.5 % to 5 %. The resistance to draw of the multiple filter is higher at the tow side than at the mouth side, and the degree of ventilation lies in a range from 50 % to 95 % added air. The main smoke flow preferably has an "American blend" taste with an approximately constant taste per puff. The pH value of the smoke lies in a range from 6.0 to 7.5. While giving good sensory results, the cigarettes have condensate and nicotine values respectively of less than 1 mg/cigarette and 0.1 mg/cigarette and in special cases of less than 3 mg/cigarette and less than 0.6 mg/cigarette.

Description

Ventilated cigarette with filter

Technical field

The invention relates to a ventilated filter cigarette.

BACKGROUND OF THE INVENTION

DE-OS 3228950 discloses a ventilated cigarette with a filter having a partially volume-activated (i.e., expanded) tobacco blend having a nicotine content of 2-5%. This cigarette contains a low-efficiency filter with an efficiency rating of max. 35%. According to the examples, the value of the condensates is between 7 and 17 mg of tar, i. condensate.

DE-OS 3638801 discloses a ventilated filter cigarette having a substantially constant puffing taste. This is achieved by the use of a separate filter material which, with increasing vapor content of the main flue gas, is more permeable to the accumulated ventilation air.

EP-A2 0283672 discloses the doping of cigarette tobacco with nicotine and levulic acid or nicotine levulate. The condensate content of the ventilated filter cigarettes thus produced must be below 7 mg of tar.

Furthermore, filter cigarettes with condensate (K) and nicotine (N) values equal to or below 1 mg K and 0.1 mg N were known or available on the market at the time of registration.

For example, NOW cigarette from REYNOLDS / USA with a condensate value <0.5 mg, then DUNHILL ULTIMATE LIGHTS cigarette from Rothmans with a reported value of less than 1 mg tar, 0.1 mg nicotine. However, such cigarettes are rated by most spot2 consumers as requiring a taste enhancement, which can be inferred from both the significantly lower market share of these cigarettes and internal smoking tests.

SUMMARY OF THE INVENTION It is an object of the present invention to provide an ultra-light filter cigarette that allows a nearly constant, qualitatively good taste offering at low overall condensate and nicotine levels while reducing all undesirable smoke constituents in both mainstream and secondary smoke compared to the prior art. to a minimum, using conventional, cost-effective materials used, especially without complicated filter technology.

SUMMARY OF THE INVENTION

The solution to this object is achieved by the features of the main claim, wherein particularly advantageous embodiments are set out in the dependent claims.

By the combination according to the invention, for example, any undesirable substances contained in the smoke can be reduced to a minimum, while the smoker-like flavors, including nicotine, still surprisingly satisfy the light smoker. The objective of this unexpected effect for the expert is: K < 1 mg / N < 0.1 mg, subjective: fully satisfactory appetite volume - it could be aided by the fact that once again a nearly constant taste condensate value as shown in FIG. 1 wherein the amount of condensate provided for coating is plotted against the number of coatings. This is not the case with the hitherto known ultra-light cigarettes and this could contribute to their rejection.

It is believed that these surprising effects are partially achieved by using preferably the so-called INCOM method (expansion method according to DE 2903300, DE 3119330 and DE).

3414625 of the applicant) of carefully obtained, high volume activated tobacco in conjunction with conventional filters with a certain retention power. This provides an approximately constant supply of condensate for coating, as shown in FIG. First

The INCOM-bulk activated tobacco is characterized in particular by maintaining the cellular structures of the tobacco fibers to an extent that is not the case with other known methods. Cellular structures similar to other methods of activated tobacco are severely damaged and may result in substantial loss of aroma and nicotine, which is not the case with INCOM tobacco. Here, the relevant flavorings, nicotine and secondary alkaloids are always made available i.e. they can also be particularly easily transferred with very small amounts of air or mainstream smoke.

It is believed that this comparatively effective aroma and nicotine mobility, especially INCOM-tobacco, works advantageously at an extremely low amount of air which is drawn through a refractory gel (Glutkegel) in the highly ventilated cigarette of the invention. It is also believed that a significantly different, usually low, strand retention due to the lower tap density and proportional to the low drag resistance, results in a still hard strand of the cigarette according to the invention, not prone to collapse, which contributes to maintaining an unexpectedly high the taste volume of the ultra light cigarette.

Finally, an unexpectedly high full taste at the lowest values could be achieved by using a part of the invention representing a particularly highly scavenging filter whose retention power or efficiency is determined by the total entrapped components (condensate and nicotine) based on the amount of flowing substance. This multiple filter, also called a multifilter or a combo-filter, consists of at least two different, possibly with a gap (cavity filter) filter sections or filter sections arranged in a mutually distinct manner, made of mutually differing, different filter materials and thus differently retaining the various substances contained therein. in the smoke, and thus the taste can be influenced, especially in connection with this taste effect adapted to the high degree of ventilation.

Usually, an unacceptable, high drag or suction resistance in ultra light segment cigarettes with non-ventilated filters with higher retention is obtained, in highly ventilated cigarette filters with the same segment filter, and therefore only warm air, i.e. acceptable air resistance, is often acceptable. a mainstream smoke with a low appetite volume, which is prevented by the cigarette according to the invention in an unexpected manner.

Compared to the available cigarettes, the significantly lower weight of the tobacco used according to the invention naturally also provides a correspondingly reduced by-stream of smoke. This desired effect can be enhanced by the use of a commercially available or some by-stream smoke reducing cigarette paper, for example the cigarette paper of DE 3802645 and DE 3802646 of the applicant, as well as the corresponding smaller dimensions of the cigarette format. Thus, in one particularly preferred embodiment, a smoking article is provided which, due to its reduced mainstream and secondary smoke emissions, maintains the habit of the cigarette quite close to the smokeless cigarette substitute but without its material burden and complicated manufacturing technology.

Preferably, the tobacco mixture as a whole is subjected to a blowing or expansion process. In this case, the volume of the mixture is increased and, corresponding to the initial volume, a corresponding increase in the filling capacity of the tobacco mixture is obtained. In particular, only the laminate-fraction or the fraction of the laminate is blown. undamaged cellular material containing tobacco or bulk activated, conventional foil wrapper, if mixed, does not do this. By expanding the (numerous) common blend of expandable lamina-tobacco and hate foil tobacco, the intermixed, finely cut tobacco portions are subjected together to both mechanical and thermal treatment. Apparently, a time-dependent migration of nicotine from the foil tobacco, or from a high-nicotine-containing lamina-tobacco to a lower-nicotine-containing lamina-tobacco, appears to occur, so that a homogeneous distribution of nicotine in the tobacco mixture is achieved. While this procedure is more costly, it contributes to maintaining the unchanged taste of the mainstream smoke during cigarette smoking. However, only a portion of the tobacco blend, such as lamina-tobacco, may also be subjected to the blowing process; the unexpected portion of the blend may consist of conventional or technical tobacco such as rib cuts. The latter can, for example, serve to build up the reactivity of the cigarette according to the invention, also as an addition to the perfume and flavoring substances known per se, which contribute to the overall taste characteristics of the cigarette. Furthermore, the addition of perfuming and flavoring agents may be carried out before or after the blowing or expansion processes. The finished tobacco mixture is then processed in a known manner on conventional cigarette machines by adding a multiple claimed filter to a filter cigarette according to the invention.

In one embodiment of the tobacco mixture under otherwise identical preparation conditions, the use of foil tobacco is completely dispensed with so that the entire final tobacco mixture is volumetrically activated. Natural tobacco with a content of 6% by weight is used. % nicotine, in particular cases up to 8 wt. nicotine.

The invention will be explained in more detail by the following examples.

DETAILED DESCRIPTION OF THE INVENTION

Example A

From an American Blend tobacco blend consisting of% Air Cured Tobacco% Flue Cured Tobacco% Orient% Foil Tobacco with an average nicotine content of 3.4%, which together (i.e., blended) is volume activated by INCOM in a manner that increases the filling capacity by 60%, cigarette strands (7.9 mm diameter, 59 mm length) are manufactured with a weight of 460 mg of tobacco used and a total weight including cigarette paper of 500 mg. The tap density of the cigarette strand is 160 mg / cm ³ and the hardness of the cigarette (measured according to the method of DE-OS 3929155) is 2.25 mm of penetration depth. The porosity of the cigarette paper is about 40 CORESTA.

These strands are fitted with double filters (PAPER / ACETATE) and attached using non-porous wrapping paper in the manner usual for filter cigarettes. PAPER is a commercially available cellulose fleece filter, and ACETATE is a conventional cellulose acetate fiber filter. The twist resistance of the 12 mm long PAPER filter section is 175 daPa, and the resistivity of the 13 mm long ACETATE-sequin section on the mouth side is 15 daPa. According to DIN 6565, the filter perforation caused by laser perforation has a degree of ventilation of 77% of the added air.

The smoking data of this A1 cigarette (measured according to DIN-ISO 3402/4387/10315 / 10362-1) is summarized in Table 1. The pH-value of the smoke was also measured by Harris et al. (32 ^nd

(1978).

Table 1 below shows the corresponding values for cigarettes A2 and A3, which differ from the cigarette A1 only by the filter. Also in these cases, a double PAPER / ACETATE filter was used with a 13 mm length and a 13 mm length from the strand side and the mouth side, but with different coating resistances and different degrees of ventilation.

Table 1

Filter data and cigarette smoking data according to Example A cigarette coating resistance PAPER filter section (daPa) coating resistance

ACETÄT-filter section (daPa) degree of ventilation (% aeration) number of coatings condensate (K) (mg) nicotine (N) (mg) K / N pH-value of smoke

Al A2 A3 175 94 175 15 50 50 «77 84 78 5.7 6.0 5.5 0.2 0.2 0.1 0.05 0.04 0.02 4 5 5 7.0 - -

The sensory finding of all three cigarettes was at least comparable, with a tendency to preference, compared to available ultra-light cigarettes with K-values > 1 mg.

Example B

From an American Blend tobacco blend consisting of% Air Cured Tobacco% Flue Cured Tobacco% Orient% Foil Tobacco with an average nicotine content of 3.6%, which together (i.e., blended) is volume activated by INCOM in a manner that increases the filling capacity by 55%, cigarette strings (diameter 7.9 mm, length 59 mm) are made with a weight of 450 mg of tobacco used and a total weight including cigarette paper of 490 mg. The tap density of this cigarette strand is 155 mg / cm ³ and the hardness of the cigarette (measured by the method of DE-OS 3929155) is 2.4 mm of penetration depth. The porosity of the cigarette paper is 40 CORESTA.

These strands are equipped with double filters (PAPER / ACETATE) and attached by means of a non-porous wrapping paper in a manner similar to a laser-perforated cigarette and, as in Example A, a 12 mm long strand of PAPER filter on the strand side and a 13 mm long ACETATE-sequined section from the mouth.

The smoking data of the three cigarettes B1, B2 and B3, which differ from each other by the resistance of the filter section and the degree of ventilation, are summarized in Table 2.

Table 2

Filter and cigarette smoking data according to Example B

cigarette BI B2 B3 coating resistance of the PAPIER filter section (daPa) 175 94 94 resistance to ACETATE section f i1tra (daPa) 15 50 50 degree of ventilation (% aeration) 77 84 88 number of puffs 5.2 5.8 6.0 Condensate (K) (mg) 0.2 0.3 0.1 nicotine (N) (mg) 0.04 0.04 0.01 C / N 5 7.5 10 Sensory finding of all three cigarettes was generally comparable to the available ultra -Easy cigarettes with K-hod-

The cigarettes of Example B even appear to be stronger (more reactive) than commercially available ultra-light cigarettes.

Example C

From an American Blend tobacco blend consisting of% Air Cured-Tobacco% Flue Cured-Tobacco% Orient with an average nicotine content of 3.5% that together (i.e.

after mixing) by volume activation in an INCOM-manner with an increase in filling capacity of 60%, cigarette strands (7.9 mm diameter, 59 mm length) are made with a weight of used tobacco of 420 mg and a total weight including cigarette paper of 460 mg. The tap density of this cigarette strand is 145 mg / cm ³ and the hardness of the cigarette (measured according to the method of DE-OS 3929155) is 2.4 mm of penetration depth. The porosity of the cigarette paper was 40 CORESTA.

These strands are equipped with double filters (PAPER / ACETATE) and attached by means of a non-porous wrapping paper in the manner usual for laser perforated cigarettes with a filter analogous to Example A, also with a 12 mm long PAPIERfilter section from the strand side and a 13 mm long ACETATE-sequin section mouth.

Table 3 shows the cigarette smoking data according to Example C.

Table 3

Filter data and cigarette smoking data according to Example C cigaretteC coating resistance95

PAPER-filter section (daPa) coating resistance15

ACETATE filter section (daPa) degree of ventilation (% aeration) 62 number of coatings5,1 condensate (K) (mg) 1.40 nicotine (N) (mg) 0.20

C / N

The sensory finding of these cigarettes was generally surprisingly comparable to the available lights cigarettes with K-values from 4 to 7 and corresponding nicotine values, with the cigarettes of Example C appearing to be stronger (reactive) compared to some available lights-cigarettes.

Claims (9)

PATENT CLAIMS A multi-filter ventilated cigarette with a generally higher filtration retention, the filter being provided with a wrapper which is itself air impermeable, but in places provided with ventilation openings, which also encloses a tobacco strand deployment area formed of a tobacco blend containing tobacco with a high nicotine content, bloated or bulk activated, that is to say expanded tobacco, the cigarette thus assembled providing a substantially constant taste offering when coated, characterized in that it comprises a combination of the following features: (a) lamina-tobacco blend, - in which the predominant portion, preferably the total portion or the final mixture, is treated according to a known blowing or expansion process, preferably according to the INCOM method, - where the filling capacity of the tobacco mixture is between 4,0 cm ³ / g and 7,5 cm ³ / g, - where the filling capacity of pure lamina-tobacco is increased to an area between 5 cm ³ / g and 8 cm ³ / g, - wherein the lamina-tobacco has a nicotine content of from 1.0% to 8.0%, preferably from 1.5% to 6.0% of the lamina-tobacco dry matter, - and wherein the total nicotine content of the tobacco mixture is between 2.5% and 5%, preferably 3.5%, of the dry substance of the tobacco mixture, (b) a cigarette strand having a tap density not exceeding 200 mg / cm ³ , preferably 125 to 175 mg / cm ³ ; c) a multiple filter, preferably a double filter, - with a higher coating resistance on the strand side and a lower coating resistance on the mouth side, the overall degree of filter efficiency being in the range of 60% to 90%, preferably in the range of 80% to 99% a - the filter is preferably laser-perforated and has a ventilation degree in the region of 50% to 95% of additional air, preferably in the region of 60% to 95% of additional air, particularly preferably in the region of 70% to 95% of additional air, d) - mainstream smoke preferably with taste American Blend, - a pH of smoke of 6.0 to 7.5, preferably 7.0, - low condensate (K) and nicotine (N) values, with K <3 mg / cigarette, preferably K <1 mg / cigarette and N <0.6 mg / cigarette, preferably N <0.1 mg / cigarette, and a K / N ratio of mainstream smoke of < 10, preferably 5. A ventilated cigarette according to claim 1, characterized in that the tobacco mixture comprises foil tobacco, the lamina-tobacco having a nicotine content of from 1.0% to 2.5%, preferably from 1.5% to 2.5%. 2.0% of the lamina-tobacco dry matter and the foil tobacco have a nicotine content of from 5% to 10%, preferably of 8.5% of the dry matter of the foil tobacco, wherein the foil tobacco additionally contains incorporated tobacco of its own fruit acids in the range of 3% to 10% foil tobacco, wherein the preferred tobacco proper acid is malic acid. A ventilated cigarette according to claim 1 or 2, characterized in that the cigarette paper has a porosity of from 10 to 60 CORESTA, preferably 40 CORESTA. A ventilated cigarette according to claim 1 or 2, characterized in that the cigarette paper is a by-stream smoke reducing paper with a porosity of less than or equal to 10 CORES14. ΤΑ. A ventilated cigarette according to any one of claims 1 to 4, characterized in that the tobacco mixture as a whole is subjected to a blowing or expansion process. A ventilated cigarette according to any one of claims 1 to 4, characterized in that only the lamina-tobacco or a predominant portion of the mixture is subjected to a blowing or expansion process and then admixed with foil tobacco or the remainder of the tobacco mixture, which may also contain tobacco ribs. A ventilated cigarette according to any one of claims 1 to 6, characterized in that the multiple filter is configured as a ventilated hollow chamber filter, wherein the passing perforation zone is distributed over the hollow chamber and is preferably formed as a laser perforation. A ventilated filter cigarette according to any one of claims 1 to 7, characterized in that the cigarettes have a conventional format having a diameter of 7.8 to 8.1 mm and a length of 80 to 100 mm. A ventilated cigarette according to any one of claims 1 to 7, characterized in that the cigarettes have a smaller size format with a diameter of 4 to 7.7 mm and a length of 30 to 79 mm. condensate dry matter (ng / draft)