EP2106708A1 - Cigarette - Google Patents

Cigarette Download PDF

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Publication number
EP2106708A1
EP2106708A1 EP08400016A EP08400016A EP2106708A1 EP 2106708 A1 EP2106708 A1 EP 2106708A1 EP 08400016 A EP08400016 A EP 08400016A EP 08400016 A EP08400016 A EP 08400016A EP 2106708 A1 EP2106708 A1 EP 2106708A1
Authority
EP
European Patent Office
Prior art keywords
tobacco
cigarette
strips
width
wide
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Withdrawn
Application number
EP08400016A
Other languages
German (de)
English (en)
Inventor
Henning Seidel
Christine Vogelsang
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Reemtsma Cigarettenfabriken GmbH
HF and PhF Reemtsma GmbH and Co
Original Assignee
Reemtsma Cigarettenfabriken GmbH
HF and PhF Reemtsma GmbH and Co
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Reemtsma Cigarettenfabriken GmbH, HF and PhF Reemtsma GmbH and Co filed Critical Reemtsma Cigarettenfabriken GmbH
Priority to EP08400016A priority Critical patent/EP2106708A1/fr
Publication of EP2106708A1 publication Critical patent/EP2106708A1/fr
Withdrawn legal-status Critical Current

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Classifications

    • A—HUMAN NECESSITIES
    • A24—TOBACCO; CIGARS; CIGARETTES; SIMULATED SMOKING DEVICES; SMOKERS' REQUISITES
    • A24D—CIGARS; CIGARETTES; TOBACCO SMOKE FILTERS; MOUTHPIECES FOR CIGARS OR CIGARETTES; MANUFACTURE OF TOBACCO SMOKE FILTERS OR MOUTHPIECES
    • A24D1/00—Cigars; Cigarettes

Definitions

  • the invention relates to a cigarette comprising a tobacco blend which contains widely cut (broad) tobacco strips.
  • the tobacco blends used for cigarettes contain cut tobacco strips, in particular cut strips of threshed tobacco leaves, which have a width of about 0.9 mm or within a small range centred at about 0.9 mm.
  • a smoker's impression of the quality of a cigarette is influenced by the hardness of the cigarette.
  • a harder or firmer cigarette is usually considered to be better than a softer cigarette.
  • the hardness of a cigarette can be defined as the decrease in thickness under a given load exerted by a stamp.
  • a method and an apparatus for determining the hardness or stiffness of cigarettes are disclosed in EP 0 416 295 B1 .
  • the filling capacity of tobacco corresponds to the compressibility of the tobacco. It can be defined as the volume of a given mass of tobacco, after a load in terms of a certain pressure has been acted for a given period. Since tobacco does not exhibit an elastic behaviour, the test conditions must be well defined.
  • EP 0 416 295 B1 also discloses a method and an apparatus for determining the filling capacity of tobacco. It is expected that cigarettes having a high stiffness can be made from tobacco having a high filling capacity.
  • the cigarette according to the invention comprises a tobacco blend which contains widely cut (broad) tobacco strips in an amount of at least 40% by weight (related to the total weight of the tobacco blend in the cigarette).
  • wide tobacco strips is used for tobacco strips cut to a width of at least 1.2 mm.
  • tobacco blend is applied to the total amount of tobacco-containing material surrounded by the wrapper of the cigarette.
  • the tobacco blend can also include expanded tobacco or reconstituted tobacco or cut stems, or it can consist of one tobacco species only.
  • the tobacco blend can contain narrow tobacco strips having a width of less than 1.2 mm, e.g., conventional tobacco strips of a width of about 0.9 mm.
  • the cigarette wrapper comprises a (smooth) cigarette paper made of ordinary paper or reconstituted tobacco.
  • the wide tobacco strips can be cut from threshed tobacco leaves (lamina tobacco).
  • lamina tobacco threshed tobacco leaves
  • conventional cutting machines can be used in the manufacturing process because it is not very difficult to change the cutting width adjustments of such machines. For this reason, the inclusion of the wide tobacco strips in the tobacco blend of the cigarette according to the invention does not require major amendments in the manufacturing process.
  • the length of the wide tobacco strips can be about the same as the length of conventional tobacco strips having a width in the order of 0.9 mm.
  • the weight of the tobacco can be reduced without adversely affecting the hardness of the cigarette.
  • the effect is not very large, but significant. Roughly, in order to end up with the same hardness, the quotient of the decrease of the tobacco rod weight (expressed in %) over the increase of the cut width (expressed in %) is in the order of 0.01. This results in significant cost savings for a large amount of cigarettes.
  • the effect is particularly surprising since the filling capacity of the tobacco blend used in the cigarette according to the invention is not significantly changed when conventional tobacco strips having a width of about 0.9 mm are replaced by wide tobacco strips.
  • the invention involves the recognition that the hardness of the cigarette increases with the cut width of the tobacco strips while keeping the amount of tobacco weight constant. Generally, the greater the amount of the wide tobacco strips in the total amount of the tobacco blend of the cigarette, the greater is this effect. Concerning the width of the wide tobacco strips, there is a similar correlation.
  • Another advantage of the cigarette according to the invention is that its sensory properties and its chemical properties and other physical properties (except for the hardness) are virtually the same as those of a conventional cigarette comprising the same kind of tobacco blend, but with a conventional width of the tobacco strips. Moreover, due to the greater cutting width, less cutting actions have to be performed in the manufacturing process which results in a reduction of cutting dust within the factory and less wear of the cutting knives. Furthermore, the wide tobacco strips have a positive effect on the cigarette ends in that they tend to keep the tobacco within the cigarettes (see below).
  • the moisture content of the tobacco blend in the cigarette is in the range of from 10% to 13%.
  • a preferred upper value for the width of the wide tobacco strips is 2.5 mm.
  • the wide tobacco strips can have a width in the range of from 1.2 mm to 2.5 mm. This involves all specific intervals included in this range.
  • the minimum width and the maximum width for embodiments of the wide tobacco strips are provided in the dependent claims. These lists allow to select any minimum width and combine it with a maximum width which is larger than this minimum width. For example, for a minimum width of 1.50 mm and a maximum width of 1.55 mm, the wide tobacco strips considered have about the same width and can be cut by adjusting the cutting machine to a pre-selected cutting width, which involves some tolerances. In another example, the minimum width is 1.25 mm and the maximum width is 2.0 mm; in this case the wide tobacco strips comprise a mixture of cut tobacco strips having different widths.
  • the amount of the wide tobacco strips in the tobacco blend of the cigarette is at least 40% by weight and can be up to 100%.
  • One of the dependent claims discloses specific examples in terms of small ranges centred at values greater than 40%.
  • the wide tobacco strips can have a filling power of at most 4.5 cm 3 /g, preferably of at most 4.0 cm 3 /g. These values refer to the filling power of a tobacco consisting of the wide tobacco strips in question, wherein the filling power measurement is performed as described further below.
  • the cigarette according to the invention is designed as a King Size cigarette, but the cigarette can also have any other format.
  • the cigarette according to the invention preferably includes a filter, but cigarettes without a filter are conceivable as well.
  • the tobacco blend used was that of a standard King Size cigarette.
  • the blend was a standard tobacco blend with ingredients (American Blend) and included 65% cut tobacco strips, 20% expanded tobacco and 15% cut stems (weight-%).
  • the tobacco moisture was approximately 12%.
  • Cigarettes of each version were manufactured with five different rod weights in steps of 25 mg. In each of these fifteen cases, the rod weight (weight of the tobacco) and the hardness of a cigarette were determined for a sample of 3 times 20 cigarettes, followed by a calculation of the mean values of the rod weight and the hardness.
  • the versions A, B, and C showed a significant effect with respect to rod weight reduction, i.e. in comparison to version A, version B has the same cigarette hardness with a rod weight decrease of 6 mg and version C even with 12 mg less tobacco.
  • a graphical representation of the results is shown in Figure 1 .
  • Table 1 lists values read from the lines in Figure 1 .
  • Table 1 Rod weight difference (in mg) to achieve the same hardness as the conventional cigarette of version A.
  • the rod weight difference is set to 0 at a (relative) hardness of 100%.
  • the determination of the moisture of tobacco or cigarette samples involves a gravimetric method.
  • the moisture is defined as the weight loss that occurs during drying of the samples for 3 hours at 82°C.
  • the hardness of a cigarette is defined as the distance a stamp moves which compresses a sample of 20 cigarettes while an initial pre-selected minimum force of 10 N increases to a pre-selected test force of 142 N.
  • the cigarettes are compressed by a 30 mm wide stamp at a speed of 0.2 mm/s.
  • the values of the force exerted by the stamp onto the cigarettes and the related path length of the stamp are measured and recorded every 0.2 s.
  • a graphical representation of these points is fitted by means of a spline interpolation.
  • the average hardness of a cigarette of the sample can be read from the interpolation curve.
  • the result for the hardness in mm of deformation) can be corrected with respect to the temperature and the moisture of the sample (reference values, e.g., 22°C and 12%).
  • Example 1 the numerical values for the hardness are given as relative values related to the measured hardness of a conventional cigarette of version A with some average rod weight.
  • the filling power (filling capacity) of tobacco is defined as the volume (in cm 3 ) of 1 g tobacco under defined load conditions at 22°C and 12% moisture.
  • the measurement of the filling power is dynamic.
  • a tobacco sample of about 400 g is filled into a cylindrical vessel having a diameter of 170 mm and a height of 220 mm.
  • the load on the tobacco is built up by means of a moving stamp which comprises force measuring means and compresses the tobacco with a constant speed of 5 mm/s until a maximum force of 1600 N is reached.
  • the filling power is related to a force of 500 N and can be derived by spline interpolation of the curve representing the relation between the stamp force and the height of the tobacco column in the vessel.
  • the moisture and the temperature of the tobacco are measured in order to correct the measured filling power for the reference values 22°C and 12% moisture.
  • Cigarettes of versions A, B and C according to Example 1 with the same hardness were tested concerning their sensory properties.
  • the percentage of packs having a visible amount of loose tobacco inside the pack was similar for all three tested versions, although the tobacco weight in the versions with broader cut width was reduced (by 6 mg and 12 mg, respectively). The same effect occurred concerning the percentage of cigarettes with recessed ends (missing tobacco at the cigarette ends) in a pack.

Landscapes

  • Cigarettes, Filters, And Manufacturing Of Filters (AREA)
EP08400016A 2008-03-31 2008-03-31 Cigarette Withdrawn EP2106708A1 (fr)

Priority Applications (1)

Application Number Priority Date Filing Date Title
EP08400016A EP2106708A1 (fr) 2008-03-31 2008-03-31 Cigarette

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
EP08400016A EP2106708A1 (fr) 2008-03-31 2008-03-31 Cigarette

Publications (1)

Publication Number Publication Date
EP2106708A1 true EP2106708A1 (fr) 2009-10-07

Family

ID=39714060

Family Applications (1)

Application Number Title Priority Date Filing Date
EP08400016A Withdrawn EP2106708A1 (fr) 2008-03-31 2008-03-31 Cigarette

Country Status (1)

Country Link
EP (1) EP2106708A1 (fr)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN104730214A (zh) * 2015-03-12 2015-06-24 红云红河烟草(集团)有限责任公司 一种切丝机切丝效果的测试方法
CN110083888A (zh) * 2019-04-09 2019-08-02 红云红河烟草(集团)有限责任公司 一种预测卷烟硬度的方法

Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE2008150A1 (en) * 1970-02-21 1971-10-21 Eduard Gerlach GmbH, 4990 Lübbecke Casing for smoking articles esp cigarettes
US3713358A (en) * 1971-06-30 1973-01-30 Celanese Corp Apparatus and process for severing flexible sheet materials
GB2132877A (en) * 1979-12-12 1984-07-18 Rothmans Of Pall Mall Feed mechanism for tobacco cutting machines
EP0416295B1 (fr) 1989-09-02 1997-05-02 H.F. & PH.F. REEMTSMA GmbH & Co. Dispositif et appareil pour tester la maniabilité de tabac et la dureté des cigarettes
EP1004247A1 (fr) * 1998-11-26 2000-05-31 British-American Tobacco (Germany) GmbH Méthode et appareil pour couper du tabac
EP1475003A1 (fr) * 2002-02-04 2004-11-10 Japan Tobacco Inc. Cigarette

Patent Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE2008150A1 (en) * 1970-02-21 1971-10-21 Eduard Gerlach GmbH, 4990 Lübbecke Casing for smoking articles esp cigarettes
US3713358A (en) * 1971-06-30 1973-01-30 Celanese Corp Apparatus and process for severing flexible sheet materials
GB2132877A (en) * 1979-12-12 1984-07-18 Rothmans Of Pall Mall Feed mechanism for tobacco cutting machines
EP0416295B1 (fr) 1989-09-02 1997-05-02 H.F. & PH.F. REEMTSMA GmbH & Co. Dispositif et appareil pour tester la maniabilité de tabac et la dureté des cigarettes
EP1004247A1 (fr) * 1998-11-26 2000-05-31 British-American Tobacco (Germany) GmbH Méthode et appareil pour couper du tabac
EP1475003A1 (fr) * 2002-02-04 2004-11-10 Japan Tobacco Inc. Cigarette

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN104730214A (zh) * 2015-03-12 2015-06-24 红云红河烟草(集团)有限责任公司 一种切丝机切丝效果的测试方法
CN110083888A (zh) * 2019-04-09 2019-08-02 红云红河烟草(集团)有限责任公司 一种预测卷烟硬度的方法
CN110083888B (zh) * 2019-04-09 2023-01-31 红云红河烟草(集团)有限责任公司 一种预测卷烟硬度的方法

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