BG62314B1 - Cigarette with ventilating filter - Google Patents

Abstract

The cigarette has a multi-layer ventilating filter with ahigher total retaining capacity, having ventilation perforation atcertain places. The tobacco mix has a high content of nicotine andexpanded tobacco and contains expanded leaf tobacco with nicotinecontent of 1,0 up to 8% in weight and/or leaf tobacco withnicotine content of 5 up to 10% in weight and with additionallyincluded fructoacid. The nicotine content in the mix is between2,5 up to 5% in weight. The resistance in suction through themulti-layer filter is higher from the side of the tobacco columnthan from the mouth side and the ventilation degree is between 50up to 95% of secondary air. The major smoke stream haspredominating taste of American Blend at approximately permanenttaste of each suction. The pH value of smoke is approximately6,0-7,5. With good sensing results are obtained values ofcondensate and nicotine, relatively below 1 mg per cigarette,respectively 0,1, in some particular cases reaching levels below 3mg condensate, respectively 0,6 mg nicotine per cigarette.8 claims, 1 figure

Description

Technical field

The invention relates to a cigarette with a ventilating filter, which is used in the tobacco industry.

BACKGROUND OF THE INVENTION

DE-OS 32 28 950 is a known ventilator filter cigarette having a volume-activated (i.e., expedited) tobacco mixture having a nicotine content of 2-5%. This cigarette has a low filter efficiency of up to 35%. The condensate values according to the examples range from 7 to 17 mg of "tar", i. condensate.

DE-OS 36 38 801 discloses a cigarette with a ventilating filter whose taste generally remains unchanged with each pull. This is achieved by the use of a special filter material which has a permeability to the ventilating air, which increases with the increase in the smoke content of the main stream of cigarette smoke.

EP-A2-0 283 672 describes the addition of nicotine and levulinic acid to the cigarette tobacco, respectively, to nicotine levulate. The condensation values of the cigarettes produced by the ventilation filter should vary below 7 mg of tar.

Cigarette filters with condensate (K) and nicotine (N) values below 1 mg K and 0.1 mg N. are currently known and marketed.

For example, these are the Reynolds / USA cigarette Now with a condensate value of <0.5 mg, and also the Rothmans Dunhill ultimate lights cigarette with a value of less than 1 mg of tar, 0.1 mg of nicotine. According to most consumers, such cigarettes should improve in terms of their taste, which is confirmed, on the one hand, by the relatively low market share of such cigarettes and, on the other, by internal smoker tests.

SUMMARY OF THE INVENTION

It is an object of the invention to provide an ultra-light filter cigarette, which, in comparison with the prior art, guarantees the preservation of almost constant and good taste at each pull, but at extremely low condensate and nicotine values, while minimizing any unwanted smoke constituents in both the main and secondary cigarette smoke streams, using conventional bargain materials at bargain prices, especially without sophisticated filter technology.

This problem is solved according to the basic embodiment of the independent claim, the preferred embodiments being mentioned in the dependent claims.

For example, by one combination of the invention, all undesirable smoke constituents, both in the gas and particulate phase, can be minimized, with the smokers' taste and aromatic substances, including nicotine, being desired to a satisfactory degree for light cigarette lovers . This unexpected effect for the skilled person has indicators for example K <1 mg / N <0.1 mg and a completely satisfactory taste range, from the first pull there is an approximately constant amount of "taste condensate", as shown in Figure 1, where shown the amount of condensate available per pull relative to the number of pulls. It is this circumstance that is lacking in conventional ultra-light cigarettes, which leads to their lack of perception.

It is understood that said effects are achieved in part by the use of the results obtained in the so-called. Incom technology (expansion method according to DE 29 03 300, DE 31 19 330 and DE 34 14 625) high volume tobacco, combined with conventional filters with a certain retention factor. This results in an approximately constant presence of a pull-up condensate, which is illustrated in FIG.

Incommunicated tobacco is characterized primarily by the preservation of the cellular structure of tobacco fibers, which is not so much the case with other known technologies. The cellular structure of all tobacco-activated tobacco by other technologies is significantly impaired, which in part can lead to large aromatic and nicotine losses, unlike Incom tobacco. This is where important aromatic substances, nicotine and secondary alkaloids, are revealed. they can be particularly easily transferred even from low amounts of air or, respectively, a stream of cigarette smoke.

It is believed that this relatively effective aromatic and nicotine mobility, above all of Incom tobacco, has a beneficial effect on the extremely low amount of air that is inhaled by the heat cone of the highly ventilated cigarette of the invention.

Extremely low persistent retention due to the low seal and relatively low drag resistance of the still-rigid and non-volatile cigarette bar of the invention, which differs from conventional cigarettes, contributes to maintaining a very high taste range a street trawl eco cigarette. Ultimately, this unexpectedly high taste range at the lowest values could be favored by the use of a high-retention multilayer filter component of the invention, whose retention capacity, respectively efficiency, is determined by the total amount of substances retained in the filter (condensate and nicotine). related to the amount of inputs. This multilayer filter, also referred to as multi-filter or combiner, consists of at least two different filter portions or sections, optionally spaced apart (hollow-chamber filters), made of and separated by separate filter materials. in a different way smoky ingredients, and thus with the ability to coordinate with each other in a "taste ratio", especially with regard to the high retention rate, consistent with this positive taste effect.

Usually, cigarettes from the ultra-light segment with non-ventilating, high-retention filters produce unacceptably high pulling resistance, respectively suction, and high-ventilation cigarette filters with filters of the same segment and correspondingly acceptable drag resistance, often reach too high "Warm air", i.e. of the main smoky jet with a low taste range, which is avoided in the cigarette according to the invention.

Due to the substantially low weight of tobacco tobacco in the cigarette according to the invention, a substantially reduced secondary smoke stream is obtained compared to conventional cigarettes. This desired effect can be enhanced by the use of commercially available, respectively, cigarette paper reducing the secondary flue jet, for example cigarette paper according to DE 38 02 645 and DE 38 02 648 of the applicant, and also correspondingly lower resized cigarettes. Thus, in a particular embodiment, a cigarette suitable for smoking is obtained, which, based on its extremely low emissions from the main and secondary cigarette smoke, while maintaining the "classic" cigarette habit, can generally be considered as close to one of the known smokeless cigarette surrogates, "but not based on their expensive materials and sophisticated manufacturing technologies.

The tobacco mixture is mainly treated by the swelling or expansion method. This results in an increase in the volume of the mixture and a corresponding increase in the filling ratio of the tobacco mixture relative to the initial volume. However, only that portion of the tobacco containing laminar cellular material, i.e. ordinary leaf tobacco, if impurities, is inflated or volume-activated, respectively. By computational expansion of the entire blend of laminar-tobacco and inflatable tobacco, well-mixed and finely-cut tobacco particles are subjected together to both mechanical and thermal treatment. Thus, the time-dependent migration of nicotine from leaf tobacco to laminar tobacco, respectively, from laminar tobacco with a high nicotine content to laminar tobacco with a lower nicotine content, is favored. In this way, a homogeneous distribution of nicotine in the tobacco mixture is achieved. Indeed, this method entails more costs, but it has a beneficial effect on the unchanging taste effect of the main stream of cigarette smoke when smoking a cigarette. However, only a fraction of the tobacco mixture, such as laminar tobacco, may be inflated, to the extent that the undiluted portion of the mixture used may consist of actually common or "technical" tobacco such as ripenshine. The latter, for example, can serve as a taste modulation of the reactivity of the cigarette according to the invention, as well as the addition of already known humectants and flavors, which also contribute to the desired overall taste effect. Humidifiers and flavorings may be added to the total tobacco mixture or to portions thereof before or after the expansion or expansion process respectively. Leaf tobacco has additionally incorporated typically tobacco fruit acids in the order of 3 to 10% by weight of the leaf tobacco in the dry state, and typical tobacco fruit acid is predominantly malic acid. The finished tobacco mixture is then treated in a known manner by conventional cigarette machines by incorporating the multilayer filters, as required, into the filter cigarettes according to the invention.

In one of the methods of preparation of the tobacco mixture, but under the same production conditions, no leaf tobacco is used at all, so that the final tobacco mixture is suitable for volumetric activation. In this case, natural tobacco with no impurities of the order of 6% by weight is used. nicotine, and in a special case, up to 8% by weight. nicotine.

Examples of carrying out the invention

The invention is explained in more detail by the following examples.

Example A. From an American Blend tobacco blend consisting of% of: 33 air-dried tobacco; 28 air-dried tobacco; 14 Oriental tobacco or 25 tobacco per leaf, with an average nicotine content of 3.4%, fully reactivated according to the Incom 20 technology (ie after mixing) with a capacity increase of about 60%, cigarettes (diameter in diameter) were produced. 7.9 mm and length 59 mm) with a payload of 460 mg and 5 total weight together with 500 mg of cigarette paper.

The bulk density of the cigarette bar is 160 mg / cm ³ and the hardness of the cigarette (measured by the method according to DE-OS 3929 155) is 2.25 mm penetration depth. The porosity of the ci10 burned paper is in the order of 40 Coresta. The cigarettes are wrapped with double filters of acetate paper and non-porous lining paper and thus processed as usual into filter cigarettes. The term "paper" here refers to the commercial standard cellulose-fiber filter and the acetate paper to the classic cellulose-acetate fiber filter. The pull resistance of the 12 mm end of the tobacco filter paper filter is 175 daPa, and that of the 13 mm end of the acetate filter on the mouth side is 15 daPa. The filter ventilation provided by laser perforation provides, according to DIN 6565, a ventilation rate of 77% of the secondary air.

The smoke data for this type A1 cigarette (with measurements made according to DIN-ISO 3402/4387/10315 / 10362-1) are shown in Table 1. The pH of the smoke was also measured, namely by the Harris / Harris et al. al. (32-nd Tob. Chem. Res. Conf. 1978).

Table 1 also shows the corresponding values for type A2 and A3 cigarettes, which differ from filter A1 by filter alone. In this case, a dual filter was used with a 12 mm tobacco paper filter section and a 13 mm acetate oral paper filter section, but with different pull resistance and different ventilation rate values.

Table 1.

Filter data and cigarette smoke from Example A

Cigarette A1 A2 AZ Paper filter cut-out resistance (daPa) Pulling resistance 175 94 175

Sequel

of acetate paper filter slice (daPa) 15 50 50 Degree of ventilation (% secondary air) 77 84 78 Pull module (number) 5.7 6.0 5.5 Condensate (K) (mg) 0.2 0.2 0.1 Nicotine (N) (mg) 0.05 0.04 0.02 K / N 4 5 5 pH of the smoke 7.0 - -

The sensory output of the three cigarettes is at least equivalent, even with a trend with some preference for classic ultra-light cigarettes with a K value> 1 mg.

Example B. From a tobacco blend of mun American Blend consisting of: 40 air-dried tobacco; 20 tobacco, air-dried; 15 Oriental tobacco and 25 tobacco per leaf, with an average nicotine content of 3.6% by volume fully activated by Incom technology (ie after blending) with a capacity increase of about 55%, produced cigarettes with a diameter of 7.9 mm and a length of 59 mm with a useful tobacco weight of 450 mg and a total mass of 490 mg of cigarette paper. The density of these cigarette columns is 155 mg / cm ³ and the cigarette hardness (measured by the method according to DE-OS 3929 155) is 2.4 mm penetration depth. The porosity of the cigarette paper is in the order of 40 CORESTA.

The cigarettes are wrapped in double filtrate acetate paper and non-porous lining paper and thus processed as usual in filter cigarettes such as Example A, i. Tobacco pole filter paper length of 12 mm and acetate paper filter section of the mouth of 13 mm length.

The smoke data of the three cigarettes type B1, B2 and BZ, which differ in the drag resistance of the filter sections and in the degree of ventilation, are listed in Table 2.

Table 2.

Filter data and cigarette smoke from example B

Cigarette B1 B2 BZ Paper Filter Stripping Resistance (da / Pa) 175 94 94 Acetate Paper Filter Stripping Resistance (daPa) 15 50 50 Degree of ventilation (% secondary air) 77 84 88 Pull module (number) 5.2 5.8 6.0 Condensate (K) (mg) 0.2 0.3 0.1 Nicotine (N) (mg) 0.04 0.04 0.01 K / N 5 7.5 10

The sensory output for the three cigarettes is completely equivalent to the classic ultra-light cigarettes with a value of K> 1 mg, and the cigarettes of Example B even look stronger than a regular ultra-light cigarette. 5

Example C. An American Blend tobacco blend consisting of: 50 air-dried tobacco; 35 air-dried tobacco; 15 Oriental tobacco with a mean nicotine content of 3.5%, fully exchanged by Incom technology (ie after blending) with a capacity increase of about 60%, manufactured cigarettes with a diameter of 7.9 mm and a length of 59 mm. with a useful tobacco mass of 420 mg and a total weight of cigarette paper 460 mg. The bulk density of these cigarettes is 145 mg / cm ³ , the cigarette hardness (measured by the method according to DE-OS 3929 255) is 2.4 mm penetration depth. The porosity of the cigarette paper is in the order of 40 CORESTA.

The cigarettes are coated with double filters of acetate paper and non-porous lining paper and thus processed as usual in a cigarette with a filter analogous to Example A, i.e. with a paper filter section from the tobacco pole 12 mm long and a filter segment from acetate paper from the mouth 13 mm long.

The smoke data of Example B cigarettes are listed in Table 3.

Table 3.

Filter data and cigarette smoke from Example C

Cigarette IN Filter section drag resistance paper (daPa) 95 Resistance to pulling a filter section of acetate paper (daPa) 15 Degree of ventilation (% secondary air) 62 Pull module (number) 5.1 Condensate (K) (mg) 1,40 Nicotine (N) (mg) 0.20 K / N 7

The sensory result in these cigarettes is completely equivalent to classic light cigarettes with a K value of 4 to 7 mg and corresponding nicotine values, with cigarettes in Example B even looking stronger than a regular light cigarette.

Claims (8)

Claims A cigarette with a multilayer ventilation filter with an overall higher filter retention capacity, characterized in that the filter has an airtight jacket but has definite sections of ventilation perforations, the jacket also extending to the initial sector of the tobacco pole , which is a tobacco mixture with a high nicotine content, such as tobacco, is inflated or volume-activated, i. e. expanded, the cigarette made in this way retains a constant taste with each pull, with a combination of the following characteristics: (a) tobacco blend with laminar tobacco, - in which the predominant part, preferably the whole part, respectively, of the final mixture is expanded by one of the known blowing or expansion methods, preferably by the Incom method; - the filling capacity of the tobacco mixture is generally 4.0 to 7.5 cm ³ / g; - the filling capacity of pure laminar tobacco is 5-8 cm ³ / g; - laminar tobacco has a nicotine content of from 1.0 to 8.0%, preferably from 1.5 to 6.0% by weight of laminar tobacco in the dry state; - and the total nicotine content of the tobacco mixture is 2.5 - 5%, mainly 3.5% by weight of the tobacco mixture in the dry state; (b) a cigarette bar with a maximum filling density of 200 mg / cm ³ , preferably 125 to 175 mg / cm ³ ; (c) a multilayer filter, preferably a double filter, with a higher resistance to pull by the cigarette bar and a lower resistance to pull by the mouth, with a total filter effect of 60 to 99%, preferably 80 to 99% and - the filter is perforated and has a degree of ventilation of 50 to 95% secondary air, preferably 60 to 95% secondary air, most preferably 70 to 95% secondary air; (d) a predominantly American Blend flavored smoke jet, pH 6.0 7.5, preferably 7.0, with K <3 mg per cigarette, predominantly K <1 mg per cigarette, and N <0.6 mg per cigarette, preferably N <0,1 mg per cigarette, and K / N ratio of main smokestack <10, predominantly 5. A ventilation filter cigarette according to claim 1, characterized in that the tobacco mixture contains leaf tobacco and laminar tobacco has a nicotine content of 1.0 - 2.5%, preferably 1.5 - 2.0% by weight. laminar tobacco in the dry state and leaf tobacco has a nicotine content of 5 to 10%, preferably 8.5% by weight of the leaf tobacco in the dry state, the leaf tobacco having additionally incorporated typically tobacco fruit acids from 3 to 10% by weight of leaf tobacco in the dry state, and typical tobacco fruit acid is predominantly apple of acid. A ventilation filter cigarette according to claim 1 or 2, characterized in that the cigarette is wrapped in cigarette paper with a porosity of from 10 to 60 COREST A, preferably 5 40 CORESTA. A ventilation filter cigarette according to claim 1 or 2, characterized in that the cigarette is wrapped in cigarette paper, reducing the secondary smoke stream by pores. 10 toast <10 CORESTA. A ventilated filter cigarette according to any one of claims 1 to 4, characterized in that in the tobacco mixture only laminar tobacco or the majority of the mixture is expanded and that the tobacco leaf or the remainder of the tobacco mixture, which may contain and tobacco veins is not expanded. A ventilation filter cigarette according to one of Claims 1 to 5, characterized in that the multilayer filter is a hollow chamber ventilation filter, with the perforated area enclosed above the hollow chamber. A ventilated filter cigarette according to one of Claims 1 to 6, characterized in that the cigarette has the usual dimensions of 7.8-8.1 mm in diameter and 80 to 100 mm in length. A ventilation filter cigarette according to one of claims 1 to 6, characterized in that it is smaller in size - 4 - 7.7 mm in diameter and 30 to 79 mm in length.