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
  • A24D1/02—Cigars; Cigarettes with special covers
  • A24D1/025—Cigars; Cigarettes with special covers the covers having material applied to defined areas, e.g. bands for reducing the ignition propensity

Definitions

• the invention relates to cigarettes, the tobacco rod of which is surrounded by a sleeve made of cigarette paper, which has areas with lower and higher air permeability in the form of pattern-like, preferably ring-like zones.
• Such cigarettes are known, for example, from DE-OS 25 59 071, where the cigarette paper is said to have zones of lower porosity in a range up to 100 and zones of higher porosity in a range from 150 to 2000 with an average porosity of 50 to 500 units Units in cm3.min ⁇ 1 each 10 cm2 and at a pressure of 10 cm water column were determined.
• a controlled burning rate and / or an increased number of puffs should be made possible by the ring-like zones of changing porosity.
• the air permeability P is now given according to DIN ISO 2965 as the amount of air in cm3 per minute, per cm2 and per kPa; it is calculated from the ratio of the volume flow of air in cm3 / min that crosses the test sample to the product of the test surface of the test sample in cm2 and the pressure difference between the two surfaces of the test sample in kPa and was previously also called the "Coresta value" specified.
• a cigarette paper is used whose areas of lower porosity correspond to an air permeability value of up to 10 P and preferably 5 P, while the areas of higher porosity have a value of 15 to 200 P with a total porosity of this cigarette paper of 5 to Have 50 P.
• the reduction in porosity in the areas of lower porosity can be achieved starting from paper with high porosity by applying gel-forming agents, such as glue, methyl cellulose, gums or lacquers and varnishes; it is also possible to perforate the cigarette papers with a porosity of about 3.6 P, which are said to be slightly porous, electrostatically or by pressure rollers or marking presses in order to achieve zones of higher porosity, the average porosity being approximately 24 P.
• the smoldering speeds of these known cigarettes are, for example, in a range of 3.2 mm / min with a number of puffs of 9.7, while cigarettes with conventional paper with an average porosity of about 26 P, e.g. glow speed increased to 4.2 mm / min with e.g. reduced to 7.5 moves.
• DE-PS 17 61 500 It is also known from DE-PS 17 61 500 to compact areas in the form of a lattice or waffle-like pattern, e.g. a silicate paste, and to reinforce the crossing points with an incombustible material, in particular to prevent the ash from falling off.
• a lattice or waffle-like pattern e.g. a silicate paste
• DIN 10240 2 sec
• the reduction in the glow rate of the cigarette rod can be achieved in normal smokable tobacco mixtures by using low-porosity paper or normal porous paper with glow-rate reducing additives.
• a low glow rate can only be achieved by using highly glowable cigarette papers.
• all of these measures result in a high number of puffs as an undesirable side effect, since less tobacco burns during the pause.
• the object of the invention is to propose, regardless of the smoldering ability of given tobacco blends, cigarettes which, with different strand ventilation levels - but with the usual number of drafts - produce a reduced sidestream smoke, or to provide cigarettes which have a low smoldering speed due to their low-porosity cigarette paper but which result in a common draft number, or which, in the case of normal-porous cigarette paper without additional additives which reduce the smoldering speed, likewise give a normal number of puffs with normal smokable tobacco or cigarettes which, in the case of highly porous cigarette paper without such additives with low-smokable tobacco, likewise give a normal number of puffs and in any case result in a cigarette with reduced sidestream smoke.
• An advantage of the cigarette according to the invention is that control of the cigarette properties is achieved without additives to the tobacco or the wrapper. Furthermore, the cigarette paper with compression zones can be included in the manufacturing process of the wrapper or cigarette, so that this measure for controlling cigarette properties can be implemented extremely cost-effectively.
• Batoning cigarette paper is known per se and e.g. mentioned in "Tobacco Encyclopedia” by E. Voges (1984); it is done by embossing the paper on filigree calender. The paper is guided between an embossing roller and a more flexible or elastic hard paper roller, the dry or semi-dry paper being compressed at the embossed points.
• This embossing embosses company or monopoly signs whereby the paper is denser in the embossed areas and the embossed sign appears dark on a light background when viewed from the cigarette and looks light on a white background when looking through the paper and gives the impression of an imitation Watermark results.
• the intensity of the bathing can be influenced by setting the absolute paper moisture in a range from about 1 to 10%, by the pressure applied from about 5 to 3000 Newton / cm and at different temperatures in the range from room temperature up to 95 ° C.
• an embossing calender which consists of an upper pressure roller, a counter-pressure roller arranged underneath and an embossing roller below this, a lower counter-pressure roller underneath and a rigidly arranged lower pressure roller.
• the pressure rollers are mostly steel rollers with a diameter of 32.0 cm and a working width of 119 cm, while the counter-pressure rollers which come into engagement with the embossing roller are rollers with a diameter of 27.0 cm and a working width of 119 cm covered with paper.
• the embossing roller itself is an engraved steel roller with a diameter of, for example, 19.4 cm and a working width of 118 cm, on the circumference of which there are provided raised webs which, depending on the desired coating, have a single width of 0.05 cm and a distance of, for example 0.05 cm, but also from Web to web can cause different embossing if the webs are wider or higher.
• the cigarette paper is drawn in via a decoiler in a working width of 100 cm in the press nip between the embossing roller and the lower counter-pressure roller, the web running being continuously controlled via side regulation and paper guide rollers, and the paper is optionally wound up with an intermediate spreader after the batoning.
• the rewind is usually carried out at a speed of 100 to 200 m / min, with the drive of the roller combination being synchronized. Particularly good results are achieved at working temperatures between 30 to 50 ° C and a paper moisture content of 5 to 7% in absolute terms.
• Batoning the cigarette paper can also take place during the manufacture of the cigarette itself and is then carried out outside or directly in the cigarette machine, the embossing calenders having a much smaller working width corresponding to the cut cigarette paper and consequently also being smaller and a smaller working width corresponding to the finished have cut cigarette paper and manage with lower working pressures.
• the zone attachment device is, for example, between the cigarette paper bobbin and the format finger of a conventional cigarette machine, so that cycle times or adjustments of the cigarette paper to be bathed accordingly can be carried out more easily.
• the stamping mechanism of the cigarette machine can also be coupled directly or synchronously with the charging attachment device.
• Experimental cigarettes were produced with customary tobacco mixtures, with customary cigarette paper being set to a lower total air permeability in each case in zones running transversely to the running direction of about 0.4 mm in width and 1 mm apart by one or more batonning of the outlet air permeabilities specified in the following table.
• Example 2 In experimental cigarettes analogous to Example 1 with a cigarette paper of relatively high initial air permeability of 235 P but with different base paper properties and different embossing widths obtained by batting than in Example 1, namely of 1.0 mm width at a distance of about 2 mm for a less smolderable Tobacco mix, the number of puffs for a 4- to 5-fold baton paper was about 7.9. The values are shown in Table 2 below.
• Table 2 shows the significant drop in air permeability, the noticeably increased smoldering times "paper” and “cigarette” as well as the surprisingly constant average number of puffs.

Landscapes

• Paper (AREA)
• Cigarettes, Filters, And Manufacturing Of Filters (AREA)
• Processes Of Treating Macromolecular Substances (AREA)

Priority Applications (1)

Applications Claiming Priority (2)

Publications (2)

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Family Applications (1)

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Cited By (5)

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Citations (3)

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• 1988
  • 1988-01-29 DE DE3802646A patent/DE3802646A1/de active Granted
• 1989
  • 1989-01-07 EP EP89100191A patent/EP0325921B1/fr not_active Expired - Lifetime
  • 1989-01-07 AT AT89100191T patent/ATE75378T1/de not_active IP Right Cessation
  • 1989-01-19 CA CA000588660A patent/CA1330413C/fr not_active Expired - Fee Related
  • 1989-01-25 US US07/301,112 patent/US4928715A/en not_active Expired - Lifetime
  • 1989-01-27 AU AU28849/89A patent/AU605402B2/en not_active Ceased
  • 1989-01-30 JP JP1022462A patent/JPH01225472A/ja active Pending

Patent Citations (3)

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