EP2836089B1 - Papier à cigarettes donnant à une cigarette un profil de tirage uniforme - Google Patents

Papier à cigarettes donnant à une cigarette un profil de tirage uniforme Download PDF

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Publication number
EP2836089B1
EP2836089B1 EP14725200.1A EP14725200A EP2836089B1 EP 2836089 B1 EP2836089 B1 EP 2836089B1 EP 14725200 A EP14725200 A EP 14725200A EP 2836089 B1 EP2836089 B1 EP 2836089B1
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Prior art keywords
weight
cigarette
paper
cigarette paper
composition
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German (de)
English (en)
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EP2836089B9 (fr
EP2836089A1 (fr
Inventor
Dietmar Volgger
Stefan Bachmann
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Delfortgroup AG
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Delfortgroup AG
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    • 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
    • A—HUMAN NECESSITIES
    • A24—TOBACCO; CIGARS; CIGARETTES; SIMULATED SMOKING DEVICES; SMOKERS' REQUISITES
    • A24C—MACHINES FOR MAKING CIGARS OR CIGARETTES
    • A24C5/00—Making cigarettes; Making tipping materials for, or attaching filters or mouthpieces to, cigars or cigarettes
    • A24C5/005—Treatment of cigarette paper
    • 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
    • D—TEXTILES; PAPER
    • D21—PAPER-MAKING; PRODUCTION OF CELLULOSE
    • D21H—PULP COMPOSITIONS; PREPARATION THEREOF NOT COVERED BY SUBCLASSES D21C OR D21D; IMPREGNATING OR COATING OF PAPER; TREATMENT OF FINISHED PAPER NOT COVERED BY CLASS B31 OR SUBCLASS D21G; PAPER NOT OTHERWISE PROVIDED FOR
    • D21H11/00—Pulp or paper, comprising cellulose or lignocellulose fibres of natural origin only
    • D21H11/12—Pulp from non-woody plants or crops, e.g. cotton, flax, straw, bagasse
    • D—TEXTILES; PAPER
    • D21—PAPER-MAKING; PRODUCTION OF CELLULOSE
    • D21H—PULP COMPOSITIONS; PREPARATION THEREOF NOT COVERED BY SUBCLASSES D21C OR D21D; IMPREGNATING OR COATING OF PAPER; TREATMENT OF FINISHED PAPER NOT COVERED BY CLASS B31 OR SUBCLASS D21G; PAPER NOT OTHERWISE PROVIDED FOR
    • D21H17/00—Non-fibrous material added to the pulp, characterised by its constitution; Paper-impregnating material characterised by its constitution
    • D21H17/63—Inorganic compounds
    • D21H17/66—Salts, e.g. alums
    • D—TEXTILES; PAPER
    • D21—PAPER-MAKING; PRODUCTION OF CELLULOSE
    • D21H—PULP COMPOSITIONS; PREPARATION THEREOF NOT COVERED BY SUBCLASSES D21C OR D21D; IMPREGNATING OR COATING OF PAPER; TREATMENT OF FINISHED PAPER NOT COVERED BY CLASS B31 OR SUBCLASS D21G; PAPER NOT OTHERWISE PROVIDED FOR
    • D21H19/00—Coated paper; Coating material
    • D21H19/10—Coatings without pigments
    • D21H19/12—Coatings without pigments applied as a solution using water as the only solvent, e.g. in the presence of acid or alkaline compounds
    • D—TEXTILES; PAPER
    • D21—PAPER-MAKING; PRODUCTION OF CELLULOSE
    • D21H—PULP COMPOSITIONS; PREPARATION THEREOF NOT COVERED BY SUBCLASSES D21C OR D21D; IMPREGNATING OR COATING OF PAPER; TREATMENT OF FINISHED PAPER NOT COVERED BY CLASS B31 OR SUBCLASS D21G; PAPER NOT OTHERWISE PROVIDED FOR
    • D21H21/00—Non-fibrous material added to the pulp, characterised by its function, form or properties; Paper-impregnating or coating material, characterised by its function, form or properties
    • D21H21/14—Non-fibrous material added to the pulp, characterised by its function, form or properties; Paper-impregnating or coating material, characterised by its function, form or properties characterised by function or properties in or on the paper

Definitions

  • the present invention relates to a cigarette paper which imparts a uniform tensile profile to a cigarette made therefrom. It further relates to a method for producing such a cigarette paper, a cigarette and the use of a location-dependent concentration of a fire salt in a cigarette.
  • a typical cigarette is made of tobacco, which is wrapped by the cigarette paper and together with it forms a typically cylindrical tobacco rod.
  • the tobacco rod is followed by the filter, which typically consists of cellulose acetate fibers.
  • the filter and tobacco rod are wrapped by the tipping paper.
  • the tipping paper connects the filter to the tobacco rod.
  • the cigarette paper has in addition to the function of wrapping the tobacco, among other things, the task of the cigarette to give an attractive appearance in the smoked and not hacked state and to influence the smoldering speed of the cigarette. It also serves to control the composition of the smoke, especially the content of tar, nicotine and carbon monoxide.
  • the smoker When smoking, the smoker creates a negative pressure at the mouth end of the smoldering cigarette, is sucked through the air on the one hand by the cone of embers on the cigarette holder, but on the other hand also flows through the air-permeable cigarette paper into the tobacco rod and so diluted the smoke.
  • the stream of air flowing through the air-permeable cigarette paper into the tobacco rod during smoking is called strand ventilation.
  • the total dilution of the smoke is composed of the strand ventilation and the filter ventilation.
  • the tobacco cord burns, so that its length decreases.
  • the available area for the strand ventilation cigarette paper decreases, so that less and less air can flow through the cigarette paper in the tobacco rod and thus the strand ventilation decreases from train to train.
  • the smoke is less dilute from train to train, and the concentration of the smoke-forming aerosols and gases in the smoke flowing from the mouth end increases.
  • the tobacco rod has a certain filtration effect on the smoke, which is also decreasing with decreasing length of the tobacco rod. This gives the smoker the impression that the cigarette is getting "stronger" from train to train.
  • the cigarette paper may be perforated with the portion of the cigarette paper close to the filter being more perforated and thus having a higher air permeability than the rest of the cigarette paper.
  • the strand ventilation does not decrease as much as with cigarette paper with an approximately constant air permeability along the tobacco rod.
  • this method sometimes has the disadvantage that such cigarettes are difficult to ignite because much air flows through the more perforated part of the cigarette paper and the air flow through the tip of the cigarette is too low to start the glowing process when lighting.
  • a cigarette paper which comprises a water-soluble salt which has lost more than 15% of its initial mass after heating to 230 ° C, the heating starting from a starting temperature of 30 ° C at a heating rate of 5 ° C / min under a Nitrogen flow of 25 ml / min takes place.
  • the water-soluble salt may be contained in discrete strip-shaped portions.
  • the cigarette paper is equipped with burn salts and designed so that the content of one or more Brandsalze in the cigarette paper from the filter end to the tobacco end changed on a cigarette made from it, in particular, that it changes monotonously within normal production and measurement tolerances, ie either monotonous increases or decreases monotonically.
  • the change need not be strictly monotone, so there may be portions of constant content of the one or more Brandsalzes.
  • the variable content or the variable concentration of Brandsalzen is chosen so that the cigarette paper gives a cigarette, in particular a filter cigarette, a more uniform tensile profile than would be the case for an otherwise similar cigarette with a constant Brandsalzkonzentration along the longitudinal direction of the cigarette.
  • the burn salts are substances, for example salts, which can increase or decrease the smoldering speed of the cigarette paper.
  • Very commonly used are trisodium and tripotassium citrate and mixtures thereof.
  • Trisodium and tripotassium citrate are examples according to the invention of the flame accelerating, ie fire-promoting, Brandsalze, while phosphates can serve as the inventive example of the glow slowing, so fire retardant, Brandsalze.
  • a fire salt is fire-promoting or fire-retardant is generally known to those skilled in the art, or it can be easily determined by measuring the smoldering speed of a cigarette paper containing the fire salt in question in sufficient quantity.
  • the direction x of the cigarette papers may or may not necessarily be in accordance with the machine direction.
  • the length L corresponds to the length of the visible tobacco rod on the cigarette for which the cigarette paper is intended, ie the length from the point where the tobacco rod emerges under the tipping paper to the tip of the cigarette to be lit. This length L may be different for different types of cigarette but will be ⁇ 11 cm and ⁇ 3 cm in the bars.
  • the function f (x) is monotone over the interval [0, L], but does not necessarily have to be strictly monotone. On the contrary, some of the presently preferred embodiments have near-end and near-tip portions having a uniform or substantially uniform concentration c (x) of the burnt salt. In any case, the function f (x) is not constant over the entire interval.
  • the actual concentration c (x) of the fire salt may deviate from the monotone function f (x) by a value of ⁇ c .
  • This value ⁇ c takes into account the usual production and measurement tolerances of Brandsalzgehaltes.
  • ⁇ c defines a certain corridor about an idealized curve f (x), which still allows an improvement over a constant Br of salt concentration, but possibly deviates locally to a moderate extent from the ideal monotonous course.
  • the minimum for tar and nicotine is typically at a fire salt content between 1.5% and 5.0% by weight, for.
  • Trisodium citrate typically at a Brandsalzgehalt of 1.5 wt .-% to 3.0 wt .-% and for tripotassium citrate at 3.5 wt .-% to 5.0 wt .-%, each based on the mass of the cigarette paper, so as it is used on the cigarette.
  • the levels of smoke are beginning to rise again.
  • a first possibility is to choose the content of the Brandsalzes at the filter end of the cigarette near the value at which - with an otherwise equal cigarette but with constant Brandsalzgehalt - a minimum tar and nicotine would be achieved and the content of the Brandsalzes then in the direction of to be lit end of the cigarette monotonically or at least approximately monotonically.
  • a second possibility is to choose the content of the Brandsalzes at the filter end of the cigarette again close to the value at which a minimum tar and nicotine is achieved, but then to increase the content of the Brandsalzes in the direction of the end of the cigarette to be ignited.
  • the Brandsalzgehalt which - with a constant Brandsalzgehalt - to minimal tar and nicotine values leads near the filter end of the tobacco rod, ie in a range of the cigarette, which produces the "strongest” features when smoking, while those Brandsalzgehalte, the - At constant Brandsalzgehalt - lead to higher levels of smoke in the vicinity of the lit end of the cigarette, ie where the trains are rather "weak".
  • a “strong” or “weak” train is understood to mean that the levels of exhaustion of tar and nicotine are higher or lower this turn relative to the other strokes on the same cigarette.
  • the total content of Brandsalzen in cigarette paper be constant, but is preferably, depending on which Brands salt outweighed in its effect on the Glasprofil, decrease or increase from the filter end to the tobacco end.
  • L corresponds to the length of tobacco rod visible on the associated cigarette, ie, the length from the point where the tobacco rod emerges from under the tipping paper to the tip of the cigarette to be lit.
  • a preferred course of the content of at least one Brandsalzes starting from the filter end of the visible tobacco rod, x 0, in the direction of the end of the cigarette to be lit, first an optional range in which the content of the Brandsalzes is constant, then followed by a linear increase or decrease of the content, and finally again an optional range with constant Brandsalzgehalt.
  • the values L 1 and L 2 should be set so that the rise or fall is neither too steep nor too late to begin or end.
  • the upper limit for L 1 is 2L / 3, preferably L / 2 and more preferably L / 3 has proven.
  • the lower limit for L 1 is 0, and preferably L / 6.
  • the upper limit for L 2 can usually be set at L, preferably at 5 L / 6. In general, however, it must always be true that L 1 is less than or equal to L 2 .
  • L 1 L 2
  • the invention can be realized in principle, this embodiment is not preferred. It is better to choose the length of the increase or decrease of Brandsalzgehalts, L 2 -L 1 , greater than L / 6, preferably greater than L / 3 and more preferably greater than L / 2.
  • the length of the rise or fall, L 2 -L 1 , on the cigarette can not be greater than the length of the visible tobacco strand, so that L defines an upper limit for the difference L 2 -L 1 .
  • L 2 -L 1 is therefore 9L / 10, and more preferably 4L / 5, and most preferably 2L / 3.
  • c 0 or c L should be greater than or equal to 0% by weight, preferably greater than 0.2% by weight and particularly preferably greater than 0.5% by weight. With regard to the upper limits for c 0 and c L , 15% by weight is a possible choice, but 10% by weight and more preferably 7% by weight are preferred. If the at least one fire salt, the content of which changes on the cigarette paper, is a citrate, 5% by weight has also proved to be a very particularly preferred upper limit. These ranges apply to c 0 and c L independently of each other.
  • c 0 is different from c L , ie that there is actually a change in the fire salt content, and preferably the amount of the difference c 0 -c L is greater than 2 ⁇ c.
  • the value for ⁇ c again preferably corresponds to the abovementioned values.
  • the cigarette paper is designed so that it can produce cigarettes, which have within the production and measurement tolerances the nominally same course of the content of at least one Brandsalzes along the visible tobacco rod.
  • the cigarette paper is provided with one or more markings which allow the cut of the tobacco rod to be synchronized with the course of the fire salt content, whose positions are thus in a predetermined local relation to the curve c (x) of the fire salt content.
  • the markings are preferably detectable by their action on electromagnetic waves, that is, for example, transmission, reflection, refraction or absorption of visible light, ultraviolet light or infrared radiation, and more preferably by an optical sensor, in particular an optical sensor which responds to reflected visible light to be detected.
  • these markers are mounted on the cigarette paper so that they come to lie on the finished cigarette under the tipping paper and thus are not visible to the smoker.
  • One possible method is to slightly color the composition with the one or more branding salts applied to the paper and to apply a fine but easily detectable line or other mark at the location where the tipping paper overlaps with the cigarette paper , Preferably, one will imprint the line or marking on the later side facing away from the tobacco, so that after production of the tobacco rod, the line or mark remains detectable for an optical sensor. Generally that's the top of the cigarette paper. It is also possible to place the line or mark on the tobacco-facing side of the cigarette paper, but then it is advisable to detect the line or mark on the cigarette paper before the tobacco rod is formed on the cigarette machine.
  • This may mean that the course of the fire salt content c (x) along the running direction of the cigarette paper is periodically alternately applied, optionally with suitable spacing, in the normal and in the reverse direction, so that after cutting the double cigarette the Brandsalzprofil on the visible part of the tobacco strand at nominally equal to all cigarettes.
  • the invention can also be applied to cigarettes which contain no filter.
  • Base cigarette papers preferred for the invention consist of pulp fibers derived from wood, flax, hemp, esparto grass or other materials. Mixtures of pulp fibers of various origins can also be used. Preferred base cigarette papers have a basis weight of 10 g / m 2 to 60 g / m 2 , with the range of 20 g / m 2 to 35 g / m 2 being particularly preferred.
  • the preferred base cigarette paper also contains inorganic mineral fillers which are added to the paper in a mass fraction of 10% to 45%.
  • a particularly preferred filler is lime (calcium carbonate), but other oxides such as magnesium oxide and aluminum hydroxide and carbonates and mixtures thereof can also be used.
  • Precipitated lime is preferred over geologically degraded lime for its purity and more uniform particle size.
  • Cigarette papers without filler or with less than 10% filler are also common and conceivable for the invention, especially for non-machine-made cigarettes ("roll-your-own", "make-your-own”).
  • Cigarette papers with more than 45% filler known, however, decreases with increasing filler content, the strength of the paper, and the paper tends to release dust during further processing, which is why this design is not preferred for use in machine-made cigarettes.
  • the preferred base cigarette papers in the context of the invention have a natural air permeability, ie without further perforation, from 0 cm.sup.- 1 kPa.sup.- 1 to 350 cm.sup.- 1 kPa.sup.- 1 , preferably between 20 cm.sup.- 1 kPa.sup.- 1 and 200 cm min -1 kPa -1 and more preferably between 30 cm min -1 kPa -1 and 120 cm min -1 kPa -1 .
  • the air permeability can be significantly increased, for example, over 300 cm min -1 kPa -1 or even over 1000 cm min -1 kPa -1 .
  • Cigarette papers are typically made in rolls of, for example, between 0.3m and 5m widths and cut into reels having a cigarette circumference derived width, typically 9mm to 35mm, or an integer multiple of that width.
  • the known from the prior art treatment of the cigarette paper with Brandsalzen comprises impregnation of the paper on the paper machine in the size or film press with a water-based solution of the Brandsalzes and subsequent drying. Also a soaking of the paper on a separate downstream of the paper machine device is conceivable.
  • aqueous composition with a particularly high Brandsalzkonzentration is applied over the entire surface and uniformly on the overdried paper by means of a flexographic printing unit integrated in the paper machines and the paper is then rolled directly without further drying.
  • the at least one fire salt is applied to the base cigarette paper in the form of a liquid composition, especially a solution, suspension or other form of mixture in a solvent.
  • a liquid composition especially a solution, suspension or other form of mixture in a solvent.
  • This order can preferably be achieved by a printing process or by spraying.
  • the single-layer application is preferred over a multilayer.
  • the printing process can be formed by gravure printing or flexographic printing.
  • a gravure cylinder is preferably provided with wells, from which the composition to be printed is transferred to the base cigarette paper, wherein the volume of the wells and / or the density of the wells on the gravure cylinder, which is also referred to as "grid size of the wells" can, is or is chosen so that the desired location-dependent concentration c (x) of the Brandsalzes results.
  • this process is used to modify a possibly even constant course of the content of at least one fire salt which is already present in the cigarette paper.
  • processing steps such as printing on self-extinguishing tapes known in the art, may be carried out before, after or simultaneously with such treatment of the paper to create or modify a history of fire salt content.
  • the composition used to prepare the history of the fire salt content comprises at least one fire salt and a solvent.
  • solvent should not be considered as limited to solutions in the chemical sense.
  • the fire salt may also be in suspension in a suspension or other form of the mixture in the solvent.
  • water is preferred as a solvent over organic solvents because it leaves no trace of the taste of the cigarette in the paper and is safe in terms of fire hazard.
  • the content of the Brandsalzes in the composition is at least 0.1 wt .-%, preferably at least 1 wt .-% and particularly preferably at least 2 wt .-%, and at most 15 wt .-%, preferably at most 10 wt .-% and particularly preferably 7% by weight, where the statements are to be understood as the mass of the anhydrous Brandsalzes based on the mass of the finished composition.
  • the composition for example, for adjusting the viscosity, other substances, in particular polymers individually or in any mixture, included.
  • polymers are cellulose derivatives, such as carboxymethyl cellulose, polysaccharides, such as starch or starch derivatives, or in particular also alginates, dextrins, guar or gum arabic.
  • Such substances may be required, for example, for chromium-plated steel printing cylinders for intaglio printing in order to produce a film on the printing cylinder by the adapted viscosity so that the doctor applied to the printing cylinder does not scratch the printing cylinder.
  • such substances may possibly be omitted in the composition.
  • the viscosity of the composition can be characterized by the flow time, and it will, for example, for the gravure between 10 s and 40 s, preferably choose between 12 s and 35 s, measured as flow time from a cup with an opening of 4 mm according to ⁇ NORM EN ISO 2431: 2011.
  • the measurement of the flow time should be done at the temperature at which the composition is used in the application process.
  • the applied amount of the composition on the initial basis weight of the cigarette paper ie on the basis weight before the application of the composition must be coordinated.
  • the applied amount of the composition should be at most 100% of the starting surface weight, preferably at most 80%, and more preferably at most 60%.
  • the upper limits result from the amount of composition which can be applied to a cigarette paper without significantly impairing its processability, for example due to the reduced strength in the wet state.
  • a lower limit results from the possibilities of the application method and is at least 0% of the starting surface weight, preferably at least 0.5% and particularly preferably at least 1%. Surfaces to which no order of the composition is made, of course, can also be provided.
  • any type of dryer can be used, for example hot air dryer, infrared dryer, tunnel dryer, heated drying cylinder or even a drying by microwaves.
  • the drying of the cigarette paper after the application of a water-based composition is preferably carried out by contact with one or more heatedeauzylindem. Treating the paper with waterborne compositions often results in the formation of wrinkles in the paper that can be efficiently reduced by drying with drying cylinders.
  • one or more spreader rollers or smoothing devices can be provided which pull wrinkles from the paper during drying and are preferably arranged so that the paper passes over one or more spreader rollers or the smoothing devices prior to contact with the first drying cylinder.
  • the spreader rollers or smoothing devices may also be arranged after one or more drying cylinders.
  • these technologies can also be used, but the problem of wrinkling does not occur there or only to a considerably lesser extent.
  • the subject invention depends in the circumferential direction only on the average content of the at least one Brandsalzes, which is why preferably the content of the at least one Brandsalzes in the cigarette paper in the transverse direction, i. is substantially constant in the circumferential direction on a cigarette made from the paper according to the invention. This prevents the cigarette from smoldering unevenly around its circumference, and ash or tobacco falling out or the ash image being deteriorated.
  • an aqueous solution was prepared from the brine salt, as prepared for the prior art infusion of the paper.
  • the content of Brandsalz in the solution resulted from the desired course of the content in the cigarette paper and the specifications of the application process.
  • the application of the burn salts was carried out by gravure printing with an engraving of the gravure cylinder corresponding to the geometry of the desired course.
  • the content of tar and nicotine in each train was calculated as the mean (M) in mg over all trains, the coefficient of variation (CoV) in% across all trains and the ratio V of the content between last and first train.
  • the coefficient of variation is the standard deviation of the respective smoking value over all the traits of a cigarette divided by its mean and expressed as a percentage.
  • the course of the Brandsalzgehalts according to the function f (x) are characterized by the parameters c 0 , c L , L 1 and L 2 and shown together with the results in Table 1.
  • the course no. 1 corresponds to a constant Brandsalzgehalt of 1.4% and served as a comparison.
  • V On the basis of the ratio V, a clear increase in the tar content of 62% and in the nicotine content of 41% can be seen.
  • the coefficients of variation of tar and nicotine are 16.1% and 11.6%.
  • the courses 2 to 6 show a sinking from the mouth end to the cigarette tip content of fire salt, while the courses 7 to 13 correspond to an increasing content of fire salt.
  • the courses 12 and 13 is still in addition to a length of 10 mm and 5 mm respectively at the mouth end and the cigarette holder, the content of Brandsalz constant and in between linearly increasing.
  • the lowest coefficient of variation of the tar content of gradients 2-6 is obtained at 12.5% on the course 3, ie a drop of 1.4% to 0% Brandsalzgehalt, while the same parameter for all courses 7-11 is already below this value, and for course 9, an increase from 1.4% to 3.5% Bratsalzgehalt, a minimum of 6.2% achieved.
  • the fire salt content in the region of the filter end can be selected at least approximately so that it leads to a minimization of a specific smoke value, in particular nicotine or tar, and starting from this value in the direction of the Cigarette tip monotonically or approximately monotonically increases or decreases.
  • the term "approximately chosen so” should also allow deviations from the ideal value of the Brandsalzkonzentration that less than 50%, preferably less than 30%, more preferably less than 15% of the ideal amount with the "per se same cigarette” is also a Cigarette made of the same base cigarette paper or of a similar base cigarette paper in which the grammage does not differ by more than 20% and the mean air permeability according to ISO 2965 by more than 15% from the same base cigarette paper.
  • An exemplary cigarette 100 consists of a filter 101 encased in a tipping paper 102 which partially overlaps the tobacco rod 103, which in turn is enveloped by a cigarette paper 104. On the cigarette 100, the tipping paper 102 is then in the overlap zone over the cigarette paper 104.
  • Diagram 110 arranged above the cigarette 100 shows an exemplary profile of the content of the at least one fire salt.
  • On the y-axis 112 is the content of the at least one Brands salt applied.
  • this is an idealized course of the deviations in reality, for example, by the usual production tolerances and Inhomogeneities of the paper are possible.
  • an endless tobacco rod is formed which is cut into pieces having the length of the tobacco rod on the cigarette. Between each pair of such pieces, a double-length filter plug is inserted and glued to a doubly wide mouthpiece covering paper to form a double cigarette connected to the filter end. In a final cut, the double cigarette is divided into two cigarettes and turned over one of the two cigarettes, so that all running out of the cigarette machine cigarettes are the same orientation. This results in the need to choose the course of the content of at least one Brandsalzes along the cigarette paper web accordingly. Such an exemplary course is in FIG. 2 shown.
  • the main direction of the cigarette paper is indicated by the arrow 201.
  • the content of the at least one Brandsalzes is plotted and its course in the direction 201 is represented by the line 203.
  • a piece of tobacco rod is made by cutting at each of the positions indicated by lines 204 and 205.
  • the demarcated by the dashed lines 206 area 207 comes to rest on the double cigarette under the tipping paper and is thus not visible in normal use. In this area 207, the course of the content of at least one Brandsalzes plays no role, because this area is not usually smoked.
  • brine salts according to the invention also leads to changes in the total tar and nicotine content even compared to the comparative cigarette with the constant course from Example 1. However, these changes can be compensated simply by adapting the filter ventilation or the filter without impairing the effect according to the invention ,
  • the skilled person will be able to find a course of the invention content of at least one Brandsalzes with little experimental effort for a large class of Brandsalzen, so that the invention can be easily transferred to a variety of Brandsalze. Likewise, he will be able to find a desired course of the content of at least one Brandsalzes for different cigarette papers and cigarette designs.

Claims (15)

  1. Papier à cigarettes, qui contient au moins un sel régulateur de combustion, dans lequel
    la concentration c(x) de l'au moins un sel régulateur de combustion varie le long d'une direction x du papier à cigarettes, caractérisé en ce que
    pour la concentration localisée c(x) sur un intervalle de longueur L, on a, pour tous les x de l'intervalle [0,L]: f x − Δ c ≤ c x ≤ f x + Δ c
    Figure imgb0010
     où:
    - 3 cm ≤ L ≤ 11 cm,
    - f(x) est une fonction monotone sur l'intervalle [0,L], mais non-constante sur l'intervalle total,
    - Δc ≤ 1 % en poids et Δc > 0 % en poids, dans chaque cas par rapport à la masse du papier à cigarettes, et |f(L) - f(0)| ≥ 2 Δc
  2. Papier à cigarettes selon la revendication 1, dans lequel Δc ≤ 0,7 % en poids, de préférence ≤ 0,5 % en poids, d'une manière particulièrement préférée ≤ 0,3 % en poids et en particulier préférentiellement ≤ 0,15 % en poids, et/ou
    dans lequel on a: |f(L) - f(0)| ≥ 0,5 % en poids, de préférence ≥ 1,0 % en poids et d'une manière particulièrement préférée ≥ 2,0 % en poids.
  3. Papier à cigarettes selon l'une des revendications précédentes, dans lequel la fonction f(x) est définie comme suit: f x = { c 0 0 ≤ x ≤ L 1 c 0 + c L − c 0 x − L 1 L 2 − L 1 L 1 < x < L 2 c L L 2 ≤ x ≤ L
    Figure imgb0011
     dans laquelle c0 ou cL est de préférence supérieur ou égal à 0 % en poids, d'une manière particulièrement préférée ≥ 0,2 % en poids et en particulier ≥ 0,5 % en poids, et/ou de préférence ≤ 15,0 % en poids, d'une manière particulièrement préférée ≤ 10,0 % en poids et en particulier ≤ 7,0 % en poids, c0 et cL étant dans chaque cas différents l'un de l'autre.
  4. Papier à cigarettes selon la revendication 3, dans lequel on a L1 ≤ 2L/3, de préférence ≤ L/2 et d'une manière particulièrement préférée ≤ L/3, et/ou L1 ≥ 0, de préférence ≥ L/6, et/ou
    L2 ≥ L/3, de préférences L/2 et d'une manière particulièrement préférée ≥ 2L/3, et/ou L2 ≤ L, de préférence ≤ 5L/6, mais où on a toujours L1 ≤ L2, et/ou
    L2 - L1 ≥ L/6, de préférence ≥ L/3 et d'une manière particulièrement préférée ≥ L/2, et/ou L2 - L1 ≤ 9L/10, de préférence ≤ 4L/5 et d'une manière tout particulièrement préférée ≤ 2L/3.
  5. Papier à cigarettes selon l'une des revendications précédentes, comportant au moins un marquage, dont la position sur le papier à cigarettes se trouve selon un rapport local prédéfini par rapport à la loi c(x), le marquage pouvant de préférence être détecté par un capteur optique, le papier à cigarettes
    étant défini pour une cigarette-filtre, et dans lequel le marquage se trouve en un point qui, dans une cigarette-filtre devant être fabriquée à partir de lui, vient se trouver en-dessous du papier de manchette de l'embout, et/ou
    dans lequel le marquage est appliqué sur le côté qui, sur la cigarette finie, est opposé au tabac.
  6. Papier à cigarette selon l'une des revendications précédentes, dans lequel la loi décrite de c (x) est prévue avec des alternances périodiques dans la direction normale, et inversement.
  7. Papier à cigarettes selon l'une des revendications précédentes, dans lequel l'au moins un sel régulateur de combustion contient un ou un mélange de plusieurs des sels régulateurs de combustion suivants: citrate trisodique, citrate tripotassique, autres citrates, malates, tartrates, acétates, nitrates, succinates, fumarates, gluconates, glycolates, lactates, oxalates, salicylates, α-hydroxycaprylates, hydrogénocarbonates, carbonates et phosphates, et/ou
    dans lequel le papier à cigarettes est au moins partiellement constitué de fibres de cellulose ou de mélanges de fibres de cellulose, les fibres de cellulose ayant été obtenues de préférence à partir de bois, de lin, de chanvre ou de sparte,
    dans lequel le papier à cigarettes présente une masse surfacique de 10 g/m2 à 60 g/m2, en particulier de 20 g/m2 à 35 g/m2.
  8. Papier à cigarettes selon l'une des revendications précédentes, qui contient en outre une charge minérale inorganique, en particulier de la chaux, d'autres oxydes, en particulier de l'oxyde de magnésium et de l'hydroxyde de magnésium, des carbonates ou des mélanges de ceux-ci,
    dans lequel la charge est présente dans le papier à cigarettes de préférence selon une proportion en masse de 10 % à 45 %, et/ou
    dans lequel la perméabilité à l'air est comprise entre 0 cm.min-1 kPa-1 et 350 cm.min-1 kPa-1, de préférence entre 20 cm.min-1 kPa-1 et 200 cm.min-1 kPa-1 et d'une manière particulièrement préférée entre 30 cm.min-1 kPa-1 et 120 cm.min-1 kPa-1.
  9. Procédé de fabrication d'un papier à cigarettes, comportant les étapes suivantes:
    mise à disposition d'un papier à cigarettes de base,
    introduction d'au moins un sel régulateur de combustion dans le papier à cigarettes de base, présentant une concentration localisée c(x), qui varie le long de la direction x du papier à cigarettes,
    caractérisé en ce que, pour la concentration localisée c (x) sur un intervalle de longueur L, on a, pour tous les x de l'intervalle [0,L]: f x − Δ c ≤ c x ≤ f x + Δ c
    Figure imgb0012
     où:
    3 cm ≤ L ≤ 11 cm,
    - f(x) est une fonction monotone sur l'intervalle [0,L], mais non-constante sur l'intervalle total,
    - Δc ≤ 1 % en poids et Δc > 0 % en poids, dans chaque cas par rapport à la masse du papier à cigarettes, et
    - |f(L) - f(0)| ≥ 2 Δc.
  10. Procédé selon la revendication 9, dans lequel Δc ≤ 0,7 % en poids, de préférence ≤ 0,5 % en poids, d'une manière particulièrement préférée ≤ 0,3 % en poids et en particulier préférentiellement ≤ 0,1.5 % en poids.
  11. Procédé selon la revendication 9 ou 10, dans lequel l'au moins un sel régulateur de combustion est appliqué sur le papier à cigarettes de base sous forme d'une composition liquide, en particulier d'une solution, d'une suspension ou d'une autre forme de mélange dans un solvant, en particulier par un procédé d'impression ou par pulvérisation, dans lequel
    le procédé d'impression est de préférence formé d'une impression par héliogravure ou d'une impression par flexographie, où
    le temps d'écoulement de la composition est de 10 s à 40 s, de préférence de 12 s à 35 s, mesuré selon ONORM EN ISO 2431:2011 avec une coupe présentant une ouverture de 4 mm, à la température à laquelle la composition est utilisée dans le procédé d'application, où
    dans le cas de l'impression par héliogravure, on prévoit de préférence un cylindre pour impression par héliogravure comportant des alvéoles à partir desquels la composition à imprimer est transférée sur le papier de base, le volume des alvéoles et/ou la densité des alvéoles sur le cylindre d'impression par héliogravure sont choisis de façon qu'il en résulte la concentration c(x) localisée souhaitée du sel régulateur de combustion.
  12. Procédé selon l'une des revendications 9 à 11, dans lequel au moins une partie de l'au moins un sel régulateur de combustion est introduite par une imprégnation du papier
    - dans la presse encolleuse ou la presse de formation d'un film d'une machine à papier, ou
    - dans un dispositif disposé en aval de la machine à papier,
    avec une solution, en particulier une solution à base aqueuse du sel régulateur de combustion, et/ou
    dans lequel l'au moins un sel régulateur de combustion est tout d'abord introduit dans le papier à une concentration approximativement uniforme, puis est localement éliminé par lavage, pour obtenir la concentration localisée souhaitée du sel régulateur de combustion.
  13. Procédé selon l'une des revendications 11 ou 12, dans lequel la teneur de la composition en l'au moins un sel régulateur de combustion ou mélange de sels régulateurs de combustion est d'au moins 0,1 % en poids, de préférence d'au moins 1 % en poids et d'une manière particulièrement préférée d' au moins 2 % en poids, et d' au plus 15 % en poids, de préférence d' au plus 10 % en poids et d'une manière particulièrement préférée d'au plus 7 % en poids, par rapport à la masse de la composition, et/ou
    dans lequel la composition contient des substances destinées à ajuster la viscosité, en particulier des polymères ou un mélange de polymères,
    dans lequel les polymères sont de préférence formés d'un dérivé de la cellulose, en particulier de carboxyméthylcellulose, d'un polysaccharide, en particulier d'amidon ou de dérivés de l'amidon, d'un alginate, d'une dextrine, de gomme de Guar ou de gomme arabique, ou de combinaisons de ceux-ci.
  14. Procédé selon l'une des revendications 9 à 13, dans lequel la quantité de la composition appliquée par unité d'aire est d'au plus 100 %, de préférence d'au plus 80 % et d'une manière particulièrement préférée d'au plus 60 % de la masse surfacique de départ correspondante avant l'application de la composition.
  15. Procédé selon l'une des revendications 9 à 14, qui comprend en outre une étape de séchage du papier à cigarettes après l'application de la composition, en particulier par utilisation d'un séchoir à air chaud, d'un séchoir à infrarouges, d'un séchoir tunnel, grâce à des cylindres sécheurs chauffés ou par utilisation de micro-ondes, dans lequel
    la composition est de préférence à base aqueuse, et le séchage est réalisé par contact avec un ou plusieurs cylindres sécheurs chauffants,
    dans lequel on prévoit de préférence en outre un ou plusieurs cylindres élargisseurs ou dispositifs de satinage, qui sont aptes à tirer du papier les plis lors du séchage, et qui de préférence sont disposés de telle sorte que le papier se déplace en avant du cylindre sécheur en passant par un ou plusieurs cylindres élargisseurs ou dispositifs de satinage.
EP14725200.1A 2013-06-21 2014-05-21 Papier à cigarettes donnant à une cigarette un profil de tirage uniforme Active EP2836089B9 (fr)

Priority Applications (1)

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PL14725200T PL2836089T3 (pl) 2013-06-21 2014-05-21 Papier papierosowy, który nadaje papierosowi równomierny profil zaciągania

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DE102013106516.3A DE102013106516B3 (de) 2013-06-21 2013-06-21 Zigarettenpapier, das einer zigarette ein gleichmässiges zugprofil verleiht
PCT/EP2014/060445 WO2014202319A1 (fr) 2013-06-21 2014-05-21 Papier à cigarettes donnant à une cigarette un profil de tirage uniforme

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EP2836089A1 EP2836089A1 (fr) 2015-02-18
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KR (1) KR102228926B1 (fr)
CN (1) CN105324042B (fr)
BR (1) BR112015030114B1 (fr)
DE (1) DE102013106516B3 (fr)
ES (1) ES2647834T3 (fr)
MY (1) MY168057A (fr)
PH (1) PH12015502644A1 (fr)
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CN107087812A (zh) * 2017-05-28 2017-08-25 中国烟草总公司郑州烟草研究院 一种两段式新型卷烟
US20180343919A1 (en) * 2017-06-06 2018-12-06 Larry Gitman Cigars with filters, and method of making the same
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ES2647834T3 (es) 2017-12-26
WO2014202319A1 (fr) 2014-12-24
PH12015502644B1 (en) 2016-03-07
KR20160021124A (ko) 2016-02-24
PH12015502644A1 (en) 2016-03-07
PL2836089T3 (pl) 2018-02-28
EP2836089B9 (fr) 2017-12-27
BR112015030114B1 (pt) 2022-02-15
BR112015030114A2 (pt) 2017-07-25
CN105324042B (zh) 2019-05-10
DE102013106516B3 (de) 2014-10-09
MY168057A (en) 2018-10-11
US10154687B2 (en) 2018-12-18
CN105324042A (zh) 2016-02-10
US20160120214A1 (en) 2016-05-05
KR102228926B1 (ko) 2021-03-17
EP2836089A1 (fr) 2015-02-18

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