HU215714B - 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

BACKGROUND OF THE INVENTION The present invention relates to a ventilated smoke filter cigarette having a high-retention multiple filter surrounded by an air-tight but intermittently ventilated perforation housing, which also has a high nicotine content of puffed or expanded tobacco containing tobacco. , wherein the cigarette thus constituted is a cigarette which provides an approximately constant amount of flavor per puff.

DE OS 3228 950 discloses a ventilated smoke filter cigarette which is partially provided with a volume activated (i.e. expanded) tobacco blend having a nicotine content of 2-5%. This cigarette is equipped with low efficiency filters with a filter efficiency of up to 35%. In the examples, values for condensate are in the range of 7 to 17 mg of "tar" (i.e., condensate).

DE OS 36 38 801 discloses a ventilated smoke filter cigarette which provides a substantially constant taste per suction. This is achieved by using a special filter material whose permeability to the ventilation air increases with increasing humidity in the main smoke stream.

EP A2-0 283 672 discloses a solution in which nicotine and levulinic acid and nicotine levulate are incorporated into cigarette tobacco. The condensate values of the ventilated smoke filter cigarettes thus produced are described as being less than 7 mg "tar".

In addition, until the date of filing, ventilated smoke filter cigarettes having condensate values (K) of about 1 mg and nicotine values (N) of about 0.1 mg or less have been known and are commercially available.

For example, the NOW cigarette manufactured by Reynolds, USA, has a condensate value of <0.5 mg, while the Rothmans DUNHILL ULTIMATE LIGHTS cigarette has a value of "less than 1 mg TAR, 0.1 mg NICOTINE" (less , such as 1 mg tar, 0.1 mg nicotine). On the other hand, such cigarettes are considered by most consumers to be an improvement in their taste, which can be inferred from the relatively small market share of these types of cigarettes and from studies by smokers.

SUMMARY OF THE INVENTION It is an object of the present invention to provide an "ultra-weak" smoke-filter cigarette that maintains a substantially constant, high-quality taste per suction with extremely low condensate and nicotine values throughout the prior art and at the same time by minimizing the use of conventional, cost-effective materials, especially without sophisticated filtration technology.

In order to solve this problem, we have developed a ventilated smoke filter cigarette, which according to the invention is characterized by a combination of the following features:

a) Lamina contains tobacco blends with tobacco,

- the majority of which is preferably treated in accordance with a known swelling or expansion process, preferably the INCOM process, of the whole or of the final mixture,

- where the filling capacity of the tobacco mixture is increased to a total value of between 4.0 cm ³ / g and 7.5 cm ³ / g,

- where the filling capacity of pure Lamina tobacco is increased to a value between 5 cm ³ / g and 8 cm ³ / g,

- wherein the lamina tobacco is provided with nicotine in an amount of from 1.0 to 8.0%, preferably from 1.5 to 6.0%, of the dry weight of the lamina tobacco,

wherein the nicotine content of the tobacco blend is in the range of 2.5 to 5% by weight of the total dry weight of the tobacco blend, preferably 3.5%;

b) up to 200 mg / cm ³ , preferably

A cigarette rod having a fill density of 125-175 mg / cm ³ ;

c) has a multiple filter, preferably a double filter,

- has a higher bar-side suction resistance and a smaller mouth-side suction resistance,

- wherein the overall efficiency of the filter is in the range of 60% to 99%, preferably 80% to 99%, and

- wherein the filter is preferably provided with a laser perforation and has a ventilation rate in the range of 50% -95% auxiliary air, preferably 60% -95% auxiliary air, most preferably 70% -95%,

(d) the main smoke stream, if applicable with an American Blend flavor,

- wherein the pH of the smoke is from 6.0 to 7.5, preferably 7,

- wherein the values for condensate (K) and nicotine (N) are small values, where K <3 mg / cigarette, preferably K <1 mg / cigarette and N <0.6 mg / cigarette, preferably N <mg / cigarette, and

wherein the main smoke stream has a K / N ratio of <10, preferably 5. Laminate tobacco is tobacco made from stripped tobacco leaves.

For example, the combination according to the invention reduces to a minimum all undesirable gaseous and particulate smoke constituents while the taste and flavor desired by smokers, including nicotine, is, quite surprisingly, still fully available to the "weak" smoker. For this unexpected effect, which is unexpected for a person skilled in the art: a value level such as K <1 mg / N <0.1 mg, subjective: fully satisfactory taste content - may also have contributed to the unexpected return of an approximately identical "taste condensate" a quantity is provided, as shown in Figure 1, in which the amount of condensate provided per suction is plotted as a function of the suction number. It was precisely this circumstance that traditional "ultra-light" cigarettes could not provide, and this is probably the reason why such conventional cigarettes were not accepted to the desired extent.

HU 215 714 Β

It is believed that some of these surprising effects can be obtained in part by using volumetric activated tobacco materials obtained with gentle volumetric filters, which are advantageously obtained in accordance with the so-called INCOM process (the expansion process according to DE 2903300, DE 31 19330 and DE 3414625). In this case, approximately constant condensate is formed per suction, as illustrated in Figure 1.

Volume-activated tobacco according to the INCOM process is particularly distinguished by retaining the cellular structure of tobacco fibers, which is not guaranteed to this extent by other known methods. Many other types of volume-activated tobacco varieties suffer significant damage to their cellular structure and may, in part, result in significant loss of aroma and nicotine, which is not the case with INCOM tobacco products. Here, the relevant flavoring substances, nicotine and secondary alkaloids are at most "digested", that is to say, they can be easily transported, even by small amounts of air or mainstream smoke.

This relatively effective mobility of aromas and nicotine, particularly in INCOM tobacco products, is expected to be beneficial for the relatively small amount of air sucked through the smolder portion of the ventilated cigarette of the present invention. It is further believed that the cigarette rod has a very low retention power, unlike conventional cigarettes, due to the low filling density and relatively low suction resistance of the cigarette rod of the present invention, which is surprisingly hard and does not collapse, in "ultra-light" cigarettes. contributes to the maintenance of taste.

Finally, the use of a high-retention multiple filter, part of the invention, whose retention or efficiency is determined by the total amount of material retained in the filter (condensate and nicotine) can contribute to this unexpected high taste. This multiple filter, also referred to as a multi-filter or a combi-filter, consists of at least two different, optionally spaced, filter portions (hollow chamber filter) or filter sections, which are constructed of different, different filter media and, therefore, filter different materials in smoke. (retained) and can be adjusted to achieve the desired "taste effect". From this point of view, the positive (desired) effect can advantageously be matched by the high ventilation of the filter.

Generally, "ultra-weak" cigarettes with high retention non-ventilated filters exhibit an unacceptable high suction resistance, whereas smoke-filter cigarettes of the same material but with ventilated filters - characterized by an acceptable suction resistance often only accept "warm air", i.e., a low-flavor mainstream smoke, which is unexpectedly eliminated for the cigarette of the invention.

Naturally, the significantly lower tobacco mass of the cigarette of the invention compared to conventional cigarettes results in a substantially reduced amount of sidestream smoke. This desired effect can be further enhanced by the use of commercially available or defined side-stream cigarette paper, such as cigarette paper according to our patents DE 3802645 and DE 3802 646, and by the use of cigarette shapes of suitably reduced size. Thus, in a particularly preferred embodiment, a smoking article has been created which, due to its extremely low mainstream and secondary flow smoke, while retaining the "classic" cigarette property, is generally classified as the known "smokeless cigarette surrogates" and does not require complicated manufacturing technology.

The swelling or expansion process is preferably subjected to the entire tobacco blend. This increases the volume of the blend and results in a corresponding increase in the "filling capacity" of the tobacco blend relative to the starting volume. In this process, however, only the Laminac component or tobacco containing intact cellular material is swollen or volumetric, whereas conventional tobacco film, when mixed with tobacco, does not. Sheet Tobacco contains not only the leaves of the tobacco plant, but also the stems and tobacco powder, which are processed into film in the same way as papermaking. The tobacco film is homogenized tobacco. By (calculated) expanding the whole mixture of expandable Lamina tobacco and non-expandable tobacco film, the intimately intermixed fine-cut tobacco portions are subjected to both mechanical and thermal treatment. This is expected to increase the time-dependent migration of nicotine from the tobacco film to the Lamina tobacco and from the high nicotine-containing Lamina tobacco to the lower nicotine-containing lamina tobacco, thus providing a more uniform distribution of nicotine in the tobacco blend. Although this process requires higher costs, it has the advantage of effecting the unchanged taste effect of the main stream of smoke during cigarette smoking. Alternatively, only a portion of the tobacco blend, such as Lamina tobacco, is subjected to the swelling process, and the non-swollen portion of the blend used may consist of conventional or "technical tobacco material" such as the main shredded tobacco leaves. The latter can serve, for example, to adjust the reactivity of the cigarette of the invention in taste, as well as the addition of known fillers and flavoring agents, which additionally contribute to the desired overall taste. The filling and / or flavoring agents may be added to the whole tobacco mixture or portions thereof before or after the swelling or expansion process. The finished tobacco blend is then left in a known manner

HU215 714B cigarette making machines utilize the multiple filter of the present invention to produce the smoke filter cigarettes of the present invention.

In an embodiment of the tobacco blend, the use of the tobacco film under the otherwise identical production conditions is completely omitted, so that in this case the entire tobacco tobacco blend can be volume activated. In this case, natural tobacco materials containing up to 6% by weight of nicotine, in particular cases up to 8% by weight of nicotine, are used.

The invention will now be described in more detail with reference to embodiments:

Example 1 American wt. Containing "Air Cured" tobacco (air-cured, naturally dried), 28 wt. Blend-type tobacco blends with an average nicotine content of 3.4% by weight, blended with volume activation of approximately 60% capacity after mixing according to the INCOM method, were used to make cigarette rods with a total weight of 500 mg, including cigarette paper, using 460 mg tobacco. it was 7.9 mm in diameter and 59 mm in length. These cigarette rods had a fill density of 160 mg / cm ³ and a cigarette hardness (measured according to DE OS 3929 155) of 2.25 mm penetration depth. The porosity of the cigarette paper was 40 ml / min · cm ² · cbar.

The cigarette rods thus obtained were provided with a double filter (PAPER / ACETATE) and were then made from non-porous wrapping paper by conventional means to form smoke-filter cigarettes. PAPER refers to a commercially available cellulose web filter and ACETATE to a conventional cellulose acetate fiber filter. The 12 mm long rod-side PAPER filter section had a suction resistance of 175 daPa and the 13 mm long mouth-side ACETATE filter section had a suction resistance of 15 daPa. The filter ventilation provided by laser perforation was 77% auxiliary air in accordance with DIN 6565.

The smoke data of the Al cigarette so produced (measured in accordance with DIN-ISO 3402/4387/10315 / 10362-1) is given in Table 1. The pH of the smoke was also measured, according to Harris et al. (32 ^nd Tob. Chem. Res. Conf., 1978).

Table 1 further shows the corresponding values for the A2 and A3 cigarettes, which are different from the Al cigarette only for the filter. These cigarettes also used a PAPER / ACETATE dual filter with a 12mm rod-side PAPER filter section and a 13mm length mouth-line ACETATE filter section, but with different suction resistances and ventilation rates than the Al cigarette.

Table 1

Smoke and filter data for the cigarettes of Example 1

Cigarette AI THE 2 THE 3 PAPER filter section suction resistance (daPa) 175 94 175 Acetate Filter Section Suction Resistance (daPa) 15 50 50 Ventilation rate (% of auxiliary air) 77 84 78 Number of aspirations 5.7 6.0 5.5 Condensate (K) (mg) 0.2 0.2 0.1 Nicotine (N) (mg) 0.05 0.04 0.02 R / N 4 5 5 Smoke pH 7.0 - -

Sensitive data from all three types of cigarettes indicate that these cigarettes can be considered to be at least equal in value and tend to be superior to conventional "ultra-light" cigarettes with K <1 mg.

EXAMPLE 2 American Blend tobacco containing 20% by weight of "Air Cured" tobacco, 20% by weight of "Flue Cured" tobacco, 15% by weight of Orient tobacco and 25% by weight of tobacco film, after mixing according to the INCOM procedure 490 mg of cigarette rods having a total weight of 450 mg, including cigarette paper, having a diameter of 7.9 mm and a length of 59 mm were prepared from a tobacco mixture subjected to a volume activation of approximately 55% capacity. These cigarette rods had a fill density of 155 mg / cm ³ and a cigarette hardness (measured according to DE OS 3929155) of 2.4 mm penetration depth. The porosity of the cigarette paper is 40 ml / min cm ² · cbar

The cigarette rods thus produced were provided with dual filters (PAPER / ACETATE) and were conventionally used to produce laser perforated smokeless cigarettes using non-porous wrapping paper in a manner similar to that of Example A, i.e., a 12mm R side with 13 mm ACETATE filter section.

Table 2 shows the smoke data for the B1, B2, B3 cigarettes, where the B1, B2, B3 cigarettes differ in their suction resistances and ventilation rates.

Table 2

Smoke and filter data for the cigarettes of Example 2

Cigarette bl B2 B3 PAPER filter section suction resistance (daPa) 175 94 94 Acetate Filter Section Suction Resistance (daPa) 15 50 50

HU 215 714 Β

Cigarette BI B2 B3 Ventilation rate (% of auxiliary air) 77 84 88 Number of aspirations 5.2 5.8 6.0 Condensate (K) (mg) 0.2 0.3 0.1 Nicotine (N) (mg) 0.04 0.04 0.01 R / N I_ 5 7.5 10

From the sensed data of all three types of cigarettes, these cigarettes have substantially the same value as conventional "ultra-light" cigarettes, where K <1 mg, where the cigarettes of Example B appeared to be even more potent (reactive) than conventional "ultra-light" cigarettes.

EXAMPLE 3 American Blend, containing 35% by weight of "Air Cured" tobacco, 35% by weight of "Flue Cured" tobacco and 15% by weight of Orient tobacco, having an average nicotine content of about 60% after mixing and having a filling capacity of about 60% according to INCOM From tobacco mixture subjected to volumetric activation resulting in an increase in volume, cigarette rods with a total weight of 460 mg, including cigarette paper, were prepared using 420 mg of tobacco having a diameter of 7.9 mm and a length of 59 mm. These cigarette rods had a fill density of 145 mg / cm ³ and a cigarette hardness (measured according to DE OS 3929155) of 2.4 mm penetration depth. The porosity of the cigarette paper was 40 ml / min · cm ² · cbar.

The cigarette rods thus obtained were provided with double filters (PAPER / ACETATE), and conventionally used to produce laser-perforated smokeless cigarettes using non-porous wrapping paper, in a manner similar to that of Example A, i.e., a 12mm side with 13 mm ACETATE filter section.

Table 3 shows the smoke data for the cigarettes of Example 3.

Table 3

Smoke and filter data for the cigarettes of Example 3

Cigarette C PAPER filter section suction resistance (daPa) 95 Acetate Filter Section Suction Resistance (daPa) 15 Ventilation rate (% of auxiliary air) 62 Number of aspirations 5.1 Condensate (K) (mg) 1.40 Nicotine (N) (mg) 0.20 R / N 7

Surprisingly, the sensed data for these cigarettes compared to conventional "weak" cigarettes (Lights / Leicht cigarettes) with K-values of 7 mg and 7 mg and corresponding nicotine values showed that the cigarettes of Example 3 still had some other "weak" cigarettes. they also seemed stronger (more reactive).

Claims (9)

1. A ventilated smoke filter cigarette having an overall high-retention multiple filter surrounded by an air-permeable but intermittently ventilated perforation housing comprising a tobacco containing a nicotine-containing tobacco blend containing expanded or expanded tobacco, wherein: A cigarette is a cigarette having an approximately constant amount of flavor per puff, characterized in that: a) The lamina comprises a tobacco blend with tobacco, the majority of which, preferably the whole or the final blend, is treated according to a known swelling or expansion process, preferably the INCOM process, wherein the tobacco blend has a total fill capacity. Is increased to a value of 4.0 cm ³ / g to 7.5 cm ³ / g, where the capacity of pure Lamina tobacco is increased to a value of 5 cm ³ / g to 8 cm ³ / g, where the nicotine content of the dry weight of the lamina tobacco being from 1.0 to 8.0%, preferably from 1.5 to 6.0%, and wherein the total nicotine content of the tobacco blend is in the range of 2.5 to 5% of the dry weight of the tobacco blend, preferably 3.5%; b) a cigarette rod having a fill density of up to 200 mg / cm ³ , preferably 125-175 mg / cm ³ ; c) a multiple filter, preferably a dual filter, having a higher rod suction resistance and a smaller mouthpiece suction resistance, wherein the filter has an overall efficiency in the range of 60% to 99%, preferably 80% to 99%, and wherein the filter is preferably laser provided with a perforation formed and having a ventilation rate in the range of 50% -95% auxiliary air, preferably 60% -95% auxiliary air, most preferably 70% -95%, d) optionally flavored with American Blend, the main smoke stream having a pH of 6.0 to 7.5, preferably 7.0, with low values for condensate (K) and nicotine (N), where K <3 mg / cigarette, preferably K <1 mg / cigarette and N <0.6 mg / cigarette, preferably N <0.1 mg / cigarette and wherein the main smoke stream has a K / N ratio <10, preferably 5. The ventilated smoke filter cigarette according to claim 1, wherein the tobacco blend comprises tobacco film, the Lamina tobacco is the Lamina tobacco. HU215 714B contains from 1.0% to 2.5%, preferably from 1.5% to 2.0%, of dry weight of nicotine, while the tobacco film contains 5% to 10%, preferably 8.5% of dry weight of tobacco film. nicotine, wherein the tobacco film is additionally provided with tobacco-specific, incorporated fruit acids in an amount ranging from 3% to 10% of the dry weight of the tobacco film, wherein the tobacco-specific fruit acid is preferably malic acid. Veneered cigarette smoke filter according to claim 1 or 2, characterized in that the porosity of the cigarette paper is 10-60 ml / min-cm ² -cbar, preferably 40 ml / min-cm ² · cbar A ventilated smoke filter cigarette according to claim 1 or 2, characterized in that the cigarette paper is a flue gas reducing paper having a porosity <10 ml / min cm ² · cbar 5. A ventilated smoke filter cigarette according to any one of claims 1 to 5, characterized in that the whole tobacco blend is subjected to the swelling or expansion process. 6. A ventilated smoke filter cigarette according to any one of claims 1 to 5, characterized in that only the majority of the lamina tobacco or blend is subjected to the swelling or expansion process, and subsequently the tobacco film or tobacco blend, which may also contain tobacco leaf blades, is blended. 7. A ventilated smoke filter cigarette according to any one of claims 1 to 5, characterized in that the multiple filter is formed as a ventilated hollow chamber filter, wherein the perforation zone is located above the hollow chamber, wherein the perforation is preferably a laser-created perforation. 8. A ventilated smoke filter cigarette according to any one of claims 1 to 5, characterized in that the cigarettes are of a conventional shape having a diameter of 7.8 to 8.1 mm and a length of 80 to 100 mm. 9. A ventilated smoke filter cigarette according to any one of claims 1 to 5, characterized in that the cigarettes are of a reduced size having a diameter of 4 to 7.7 mm and a length of 30 to 79 mm.