EP2532258A1 - Teerverringernde Zigarre mit Filterabschnitt mit expandierten Schnitttabakstängeln - Google Patents

Teerverringernde Zigarre mit Filterabschnitt mit expandierten Schnitttabakstängeln Download PDF

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Publication number
EP2532258A1
EP2532258A1 EP11169128A EP11169128A EP2532258A1 EP 2532258 A1 EP2532258 A1 EP 2532258A1 EP 11169128 A EP11169128 A EP 11169128A EP 11169128 A EP11169128 A EP 11169128A EP 2532258 A1 EP2532258 A1 EP 2532258A1
Authority
EP
European Patent Office
Prior art keywords
cigar
filler
filter
distal end
tar
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.)
Granted
Application number
EP11169128A
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English (en)
French (fr)
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EP2532258B1 (de
Inventor
Bob Van Mierlo
Toon Lommelen
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.)
Scandinavian Tobacco Group Lummen NV
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Scandinavian Tobacco Group Lummen NV
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Publication date
Application filed by Scandinavian Tobacco Group Lummen NV filed Critical Scandinavian Tobacco Group Lummen NV
Priority to ES11169128T priority Critical patent/ES2729748T3/es
Priority to EP11169128.3A priority patent/EP2532258B1/de
Publication of EP2532258A1 publication Critical patent/EP2532258A1/de
Application granted granted Critical
Publication of EP2532258B1 publication Critical patent/EP2532258B1/de
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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
    • 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
    • A24D1/04—Cigars; Cigarettes with mouthpieces or filter-tips
    • A24D1/045—Cigars; Cigarettes with mouthpieces or filter-tips with smoke filter means
    • 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
    • A24D3/00—Tobacco smoke filters, e.g. filter-tips, filtering inserts; Filters specially adapted for simulated smoking devices; Mouthpieces for cigars or cigarettes
    • A24D3/06—Use of materials for tobacco smoke filters

Definitions

  • the invention pertains to the technical field of producing cigar rods, more specifically a tar reducing cigar comprising two different kinds of natural filler material, whereby one of the filler materials has a tar-reducing effect.
  • a 100% natural cigar typically consists out of three parts: the filler, the wrapper and a binder. Both the binder and wrapper generally consist out of 100% natural tobacco leaves, spirally wrapped around the filler to shape the cigar.
  • the filler generally consists out of a tobacco blend. While cigarettes and to a lesser extend cigarillo's are often provided with a filter, cigars are seldom provided with a filter as they seem to be less attractive for the market. The smoker might feel that a filter will change the rich and full aroma of a cigar. Furthermore, the addition of a filter, which often consists out of a cellulose acetate wrapping, alters the cigar visually. However, as it is common knowledge that cigar smoke contains tar, nicotine and carbon oxides, it is strongly advisable to filter the smoke in order to reduce the concentration of these toxic compounds.
  • GB 2 064 293 describes a cigar with filter section composed of a mass of flexible fibers of a carbonaceous material which is produced by pyrolysis of a fibrous cellulose based precursor, particularly viscose fibers.
  • the filter part may be placed at the extreme buccal end of the cigar, or sandwiched between the filler of the smokable part and a short section of tobacco filler at the extreme buccal end of the cigar.
  • US 3 858 593 relates to a method and apparatus for producing a cigar which has a different kind of filler in the mouthpiece and in the smokable part.
  • the filler of the mouthpiece can serve as filter material.
  • the system is provided with a press well comprising a punch mechanism and at least two ducts for the separate supply of the fillers.
  • the pressing force for the filler intended for the smokable part must be set to a different value from that for the mouth end.
  • the present invention provides a tar reducing cigar, comprising two different kinds of filler.
  • the filler in the proximal end, said mouthpiece is provided at a different density than the filler in the distal end, said the smokable part and will form a natural filter in the mouthpiece.
  • the filler in the filter comprises of expanded, cut tobacco stems. This material has a high filling power, and allows a high degree of compression due to the elasticity of the material.
  • the cigar with will reduce the toxic compounds in the smoke, such as tar.
  • the nicotine in the smoke will also be reduced and the smoke will become less harsh.
  • the cigar will however still keep its natural appearance and high-quality taste.
  • a cigar comprises out of three parts: the filler, the wrapper and a binder.
  • the filler of a cigar typically comprises tobacco, or tobacco blends, produced from tobacco leaves.
  • the cigar belongs to the group of Long filler cigars, with the filler comprising entire tobacco leaves.
  • the cigar belongs to the group of the Short filler cigars; whereby the filler comprises a mixture of tobacco, made from cut-up leafs.
  • Wrapper and binder are typically made from tobacco leaves, and enwrap the filler to keep the filler together and to ensure the form of the cigar.
  • the present invention provides for a cigar, comprising two fillers, one for the smokable part, and one for the mouthpiece.
  • the filler for the mouthpiece has a filtering effect on the smoke yield of the cigar.
  • the filler for the smokable part is made of high-quality tobacco.
  • the filler for the mouthpiece comprises a tobacco product of different quality, and hence less expensive.
  • this said tobacco product of lesser quality comprises cut tobacco stems.
  • these cut tobacco stems are expanded.
  • the filter part of the cigar will be smaller in size compared to the smokable part of the cigar.
  • the filler for the filter part is provided at a lower density than the filler in the smokable part.
  • the cigar will comprise rows of perforations, near the head of the cigar. These perforations will realize a pressure drop which allows optimal smoking and reduces the smoking yield of the products.
  • the filtering effect of the cigar will lower the harshness of the smoke, without loss of the specific taste of the smoke.
  • This aspect is important for the smoker, as the smoker still has to be able to appreciate the taste of a 100% natural cigar, without the feeling of having to give in on the feeling and taste.
  • the cigar pertains its natural appearance as the filter is made of a natural tobacco product, and not, such as mostly known in prior art, from cellulose acetate which often occurs as a white mouthpiece.
  • the mouthpiece of the cigar in the present invention is indistinguishable from a normal, filter-less cigar. The cigar keeps its natural look.
  • the presented cigar is less costly to produce, as less amount of high-quality tobacco is needed for the production of the cigar.
  • the tobacco in the mouthpiece of a normal cigar is lost.
  • Replacing part of the high-quality tobacco filler in the cigar by a tobacco product that is less expensive, will lower the production cost of the cigar, which is beneficial for both manufacturer and consumer.
  • the cigar according to present invention is characterised by a number of technical parameters and characteristics such as density of the two sorts of filler, pressure in the headpiece of the cigar, draw resistance, and reduction in smoke yields of the cigar compared to a cigar without filter.
  • the parameters and characteristics of a cigar with filter comprising cut tobacco stems are discussed in more detail below.
  • the present invention provides a method and apparatus for producing the cigar as abovementioned, comprising two different fillers with different density.
  • a different pressure is applied to the fillers from both the distal and proximal end.
  • the pressure exerted on the filler for the filter section is lower than the pressure exerted on the filler for the distal end.
  • the fillers will be enwrapped by the binder and wrapper.
  • the present invention concerns a tar reducing cigar, comprising two different kinds of filler, with a different density.
  • the filler in the mouthpiece comprises expanded, cut tobacco stems and forms a natural filter in the mouthpiece.
  • % by weight refers to the relative weight of the respective component based on the overall weight of the formulation.
  • tobacco as used herein describes the product obtained by processing the leaves of the tobacco plant, which said process comprises the steps of harvesting the leaves of the tobacco plant, curing the said leafs, fermenting which lowers the sugar levels, moistening and stripping the leaves.
  • the laminas are separated from the stems, and shredded to form the tobacco which is used as filler material for cigarettes and cigars.
  • tobacco stems refers to the stems of the tobacco leaf, which are separated from the lamina.
  • proximal end as used herein, equals the term mouthpiece, and comprises the filter section of the cigar.
  • distal end as used herein, equals the term smokable part, and comprises typically the part of the cigar minus the proximal part, which contains tobacco.
  • TPM Total Particulate Matter
  • DPM Dry Particulate Matter
  • Nicotine-free Dry Particulate Matter as used herein describes the dry particulate matter after deduction of its nicotine content, expressed as milligrams per cigar.
  • draw resistance or pressure drop as used herein describes the static pressure difference between the two ends of the cigar when it is traversed by an air flow under steady conditions in which the volumetric flow is 17,5 ml s -1 at the distal end.
  • the invention provides in a first aspect for a cigar rod, comprising two different sorts of filler, one for the smokable part (2), and one for the mouthpiece (1).
  • Figure 1 depicts a schematic overview of the cigar as presented by the current invention.
  • the cigar furthermore comprises a wrapper (14) and binder (13) which in one embodiment comprises tobacco leaves.
  • the filler for the mouthpiece (1) has a reducing effect on the smoke yield of the cigar.
  • the filler for the smokable part or distal end of the cigar (2) comprises high-quality tobacco.
  • the cigar is a Long filler cigar.
  • the cigar is a Short filler cigar.
  • the filler for the mouthpiece or the proximal end of the cigar (1) comprises a tobacco product of different quality, and hence less expensive.
  • this said tobacco product of lesser quality comprises cut tobacco stems.
  • these cut tobacco stems are expanded.
  • the tobacco leaf is processed to separate the stems from the lamina.
  • the lamina are shredded and are per definition considered as the high-quality tobacco used for making the smokable part of a cigar.
  • the stems are not successfully utilizable as such in cigarette making because of their relatively large diameter, their hard nature and poor burning properties.
  • the tobacco stems are expanded.
  • the stems separated from tobacco leaves by threshing in a customary way are shredded to a suitable dimension. More specifically, the stem gets moistened, then flattened with rollers and afterwards cut.
  • the expanding treatment is carried out under high temperature, for instance by use of super-heated steam.
  • the cut stems go through an expansion unit based on steam and from there to the dryer.
  • the process can be carried out by use of Sagemueller's Vibration Tunnel VFC, which comprises a heat-insulated tunnel section which incorporates a series of closely spaced, high-quality and exchangeable nozzles arranged side-by-side. These nozzles blow super-heated steam in the form of a tightly bundled and intensive jet through the in-fed material. Finally, the stems are dried.
  • VFC Vibration Tunnel VFC
  • the filter part (1) of the cigar will be smaller in size compared to the smokable part of the cigar (2).
  • the size of the cigar rod preferably lies between 100 and 130 mm.
  • the smokable part of the cigar rod will comprise around 65 to 90% of the entire length of the cigar rod, more preferably 75%.
  • the mouthpiece will comprise around 10 to 35% of the entire length of the cigar rod, more preferably 25%.
  • each kind of filler will have a specific density.
  • the differences in density are obtained by the amount of pressure that the fillers will receive during the manufacturing of the cigar.
  • a pressure of 0.7 to 1.25 bar will be exerted on the filler of the smokable part, more preferably 1 bar, while the mouthpiece will receive a pressure of 0.2 to 0.75 bar, more preferably 0.5 bar.
  • the filling power of the filler in the mouth piece lies between 500 and 700 cm 3 /100g, more preferably 600 cm 3 /100g.
  • the filling power of the material in the smokable part lies between 650 and 850 cm 3 /100g, for instance 770 cm 3 /100g.
  • the weight of the cigar will comprise between 0.8 and 15 gram.
  • the cigar may contain rows of perforations along the mouthpiece. These perforations will permit air supply during the smoking of the cigar and the amount of perforations has equally an influence on the draw resistance of the cigar.
  • the amount and size of the perforations is directly proportional to the amount of ventilation. In general, a well-defined amount and size of perforations can optimize the smoking enjoyment, as well as lower the smoke yields of the product.
  • the perforation pattern can vary from 0 to more than 3x14 holes, and every combination thereof in between. In one embodiment, the cigar contains 2 rows of each 7 perforations.
  • the draw resistance of the cigar comprises between 45 and 65 mmWg in the smokable part, and between 95 and 120 mmWg in the mouthpiece. Determination of the draw resistance of the cigar and filter section occurred according to CORESTA Recommended Method N° 41 for filter rods and cigarettes (2007). The draw resistance was measured by a measuring device of the brand Sodim.
  • the expanded, cut tobacco stems provide for a reducing effect of the smoke components, more specifically NFDPM (tar), nicotine and carbon monoxide.
  • the levels of these components were measured in the cigar as presented in current invention, and compared to the levels of a reference cigar. Prior to the measurement of these components, the cigars were conditioned for minimal 48 hours in a room with constant temperature of 22°C, an atmospheric pressure 96 kPA and a relative air humidity of 60%.
  • the levels of the smoke compounds were measured by use of a Borgwaldt KC smoke analyser and gas chromatography. All measurements were performed at a temperature of 22°C ⁇ 2°C and a relative humidity of (60 ⁇ 5)% and an atmospheric pressure within the range of 96 kPa ⁇ 10 kPa as recommended by CORESTA (1998). Flameless ignition was used where possible.
  • the smoking process was carried out in an environment that allows the sidestream smoke by minimum extraction, to generate a straight vertical smoke plume of approximately 10 cm during set up of the machine.
  • Diameters of the test cigars were measured 15 mm from the proximal end.
  • the population of test cigars was smoked on an automatic smoking machine with simultaneous collection of total particulate matter in a glass fiber filter trap.
  • the mass of the collected total particulate matter (TPM) was gravimetric determined and extraction of the total particulate matter from the trap for the determination of the water and nicotine contents occurred through gas chromatography.
  • Filter discs which had been conditioned in the test atmosphere for at least 12h, were inserted in their holders by placing the rough side of the filter disc so that it faced incoming smoke, hence forming a smoke trap.
  • the filter discs were weighed prior to inserting in the smoking machine.
  • the test cigars were conditioned prior to inserting the cigars in the cigar holders.
  • the position of a cigar on the smoking machine generally is determined by the angle made by the longitudinal axis of the cigar and the horizontal plane when a cigar is inserted into a cigar holder in an analytical smoking machine.
  • the conditioned test cigars were automatically lighted.
  • the standard puff duration was 1,5 s, with a standard deviation of not greater than 0,05 s for individual puffs.
  • the standard puff frequency was one puff every 40 s with a standard deviation for this time not greater than 0,5 s. Each individual puff was counted and recorded and the puff number rounded off to the nearest one-tenth of a puff based on the puff duration. The clearing puff was not included in the puff number. After the cigars were smoked, the smoke traps were removed from the smoking machine and weighed.
  • T (m1 - m0) / q
  • m0 the mass of the smoke trap before smoking (in milligrams)
  • m1 the mass of the smoke trap after smoking (in milligrams)
  • q the number of cigars smoked into the trap.
  • the filter disc were removed from the smoke traps and put in a flask containing propanol solvent.
  • the flask was gently shaked on an electric shaker for at least 20 minutes, to ensure full extraction of the nicotine and water in the particulate matter.
  • the dry particulate matter, D is calculated for each trap from the equation:
  • Nicotine in the supernatant solution in each flask was determined according to CORESTA Recommended Method N° 66 (2005), by use of a gas chromatographic analysis.
  • Carbon monoxide in the mainstream smoke of was determined according to CORESTA Recommended Method N° 68 (2010), by non-dispersive infrared analysis.
  • C obs observed carbon monoxide concentration
  • % (v/v) N total number of puffs in the measured sample (including clearing puffs)
  • q number of cigars smoked to produce the measured sample
  • V puff volume
  • ml t ambient temperature
  • °C p ambient pressure
  • kPa W average mass of conditioned cigars, g per cigar
  • the levels of the smoke compounds were measured with the use of a Borgwaldt KC smoke analyser.
  • the levels of tar (NFDPM) could be reduced by 10 to 60%, with an overall average of 35% compared to the reference cigar.
  • the CO and nicotine levels could respectively be reduced by 20 to 40%, overall average by 30% and by 35 to 50%, overall average 40% (see also example 1, table 1, figure 5 ).
  • cut tobacco stems of the filter material formed an effective mechanical filter for the particles in the smoke, as well as for vapor phase constitutes such as hydrogen cyanide, formaldehyde and other volatile aldehydes.
  • the cigar as presented by the current invention has also the advantage that it can be produced at a lower cost than a cigar without filter. Since the mouthpiece comprises a less expensive kind of tobacco, namely the tobacco stems, replacement of a part of the tobacco by these stems will result in a cost reduction during production.
  • the current invention equally provides for a method to produce the tar reducing cigar comprising the steps of
  • the apparatus used to carry out the abovementioned method and to manufacture the cigar as presented in the current invention will require means to provide the two different sorts of filler and means to compress each type of filler independently of one another.
  • FIGS. 2-4 represent schematic overviews of the apparatus or parts of the apparatus as presented in the current invention.
  • the tobacco filler is delivered in bags or containers (3) to the installation. These bags or containers (3) are installed above the installation by a tackle.
  • the filler material is collected by a funnel (15) which contains combs driven by pneumatic cylinders (not shown). These combs will separate the clumps of tobacco material. From the large funnel, the tobacco material will enter a smaller funnel which ends on the supplying means towards the format chamber.
  • the filler for the smokable part and the mouthpiece are supplied to the format chamber (6).
  • these supplying means comprise a conveyor, subdivided in two separate parts for holding the different kinds of fillers.
  • the supplying means comprise two separate conveyors (4, 5). Referring to figure 3 , the conveyor transporting the filler for the smokable part (4) will preferentially be larger in width than the conveyor transporting the filler for the mouthpiece (5).
  • the conveyor will be installed in an angle of approximately 30°.
  • the conveyor is motorized, for instance driven by a stepper motor.
  • the surface of the conveyor comprises studs, to prevent the filler from clumping.
  • a scraper is installed above the conveyor, again for preventing the filler from clumping and to evenly distribute the filler before entering the format chamber (not shown).
  • the scraper is driven by a rotary cylinder with a radius of 180° which determines the position of the scraper.
  • the amount of filler that enters the format chamber is regulated.
  • the filler is entering the format chamber (6). In one embodiment, this occurs through a valve which regulates the amount of filler entering the format chamber by opening or closing.
  • a hopper (7) is installed at the end of the conveyor. The filler will enter the format chamber (6), which is smaller than the conveyor, through the hopper (7).
  • the format chamber (6) will determine the format of the cigar, such as length and thickness.
  • the format chamber is divided in to sub-compartments, entirely separated from one another. The separation between the different compartments consists out of a vertical partition wall (16) placed in the format chamber.
  • the pestles (8, 9) driven by pneumatic cylinders (10) with sensors (17), are installed above the format chamber for volume and weight measurement.
  • a specific amount of filler will enter the format compartment coming from the hopper at the end of the conveyor.
  • the right amount of filler that enters the format compartment is determined by the position of the pestle in the compartment. This position is determined by analogue sensors (17).
  • the format chamber is movable in a vertical direction through guide rods. When a new supply of filler is needed, the format chamber will move upwards towards the hopper (7).
  • a valve normally closing the format chamber, will open, and the filler can enter the different compartments of the format chamber.
  • the format valve will close again, and the format chamber will move downwards.
  • the pestles (8, 9) will be pushed downward by the action of the pneumatic cylinders.
  • the tightness of the tobacco parts in the cigar is determined by applying a certain pressure on the format cylinder, so the size of either one of the filler in the format compartments is consistent and depending on this pressure. Applying a low pressure (0-0.5 bar) to the filter compartment, results in a very low packed filter. Applying higher pressures (up to a few bars, preferentially 1 bar) results in a very tightly packed filter. The tightness of the filter determines the final smoke composition and smoking experience.
  • the format pestle will push a certain amount of filler out the format compartments.
  • the format knife (18) installed underneath the format chamber, will swing away, aided by the arms connected to the knife.
  • the knife (18) will swing back, and the cut-off filler will fall on the wrapping table (12) underneath the format chamber.
  • the tobacco material can now be enwrapped by binder (13) and wrapper (14), which will lead to a finished cigar.
  • the installation is built in such a way, that the format chambers are interchangeable; hence one installation can support the production of different cigar formats.
  • the smoke compounds of two populations of cigars of a given type were tested in a smoke analyzer according to the CORESTA recommended guidelines.
  • Population A comprised of 20 cigars of type 1, sampled from a population of 1000 cigars (specifications see below), while population B comprised of 20 cigars of a given type 2, sampled from a population of 1000 cigars (specifications see below).
  • population B comprised of 20 cigars of a given type 2
  • sampled from a population of 1000 cigars specifically see below
  • a population of filter-less counterparts of each cigar type was used as control.
  • the cigars of the population to be analyzed were randomly chosen within the group of cigars of a given type. Sampling occurred through the recommendations given by CORESTA recommended method n°47 (2000).
  • a cigar of given type 1 according to the present invention with the following parameters:
  • a cigar of given type 2 according to the present invention with the following parameters:
  • Figure 5 shows graphs which depicts the percentage of reduction of NFDPM, CO and nicotine levels in the cigars according to the invention compared with control cigars, based on the results obtained in Table 1.
  • the levels of NFDPM could be reduced by 10 to 60%, with an overall average of 35% compared to the reference cigar.
  • the CO and nicotine levels could respectively be reduced by 20 to 40%, overall average by 30% and by 35 to 50%, overall average 40%.
EP11169128.3A 2011-06-08 2011-06-08 Teerverringernde Zigarre mit Filterabschnitt mit expandierten Schnitttabakstängeln Active EP2532258B1 (de)

Priority Applications (2)

Application Number Priority Date Filing Date Title
ES11169128T ES2729748T3 (es) 2011-06-08 2011-06-08 Un puro reductor de alquitrán con sección de filtro que comprende tallos de tabaco expandidos y cortados
EP11169128.3A EP2532258B1 (de) 2011-06-08 2011-06-08 Teerverringernde Zigarre mit Filterabschnitt mit expandierten Schnitttabakstängeln

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
EP11169128.3A EP2532258B1 (de) 2011-06-08 2011-06-08 Teerverringernde Zigarre mit Filterabschnitt mit expandierten Schnitttabakstängeln

Publications (2)

Publication Number Publication Date
EP2532258A1 true EP2532258A1 (de) 2012-12-12
EP2532258B1 EP2532258B1 (de) 2019-03-20

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EP11169128.3A Active EP2532258B1 (de) 2011-06-08 2011-06-08 Teerverringernde Zigarre mit Filterabschnitt mit expandierten Schnitttabakstängeln

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ES (1) ES2729748T3 (de)

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2250381A (en) * 1939-08-08 1941-07-22 Morris S Kayner Cigar
GB940059A (en) * 1962-02-27 1963-10-23 Manufactura De Tobacos Particu Filter for tobacco smoke
US3858593A (en) 1971-01-08 1975-01-07 Arenco Pmb Nv Method of felting two tobacco fillers in a cigar or cigar rod
GB2064293A (en) 1979-09-19 1981-06-17 Gallaher Ltd Fibrous carbon cigar filter
DE20309178U1 (de) * 2002-03-26 2003-09-11 Godfrey Phillips India Ltd New Biologisch abbaubare doppeltdichte Filterzigarette

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2250381A (en) * 1939-08-08 1941-07-22 Morris S Kayner Cigar
GB940059A (en) * 1962-02-27 1963-10-23 Manufactura De Tobacos Particu Filter for tobacco smoke
US3858593A (en) 1971-01-08 1975-01-07 Arenco Pmb Nv Method of felting two tobacco fillers in a cigar or cigar rod
GB2064293A (en) 1979-09-19 1981-06-17 Gallaher Ltd Fibrous carbon cigar filter
DE20309178U1 (de) * 2002-03-26 2003-09-11 Godfrey Phillips India Ltd New Biologisch abbaubare doppeltdichte Filterzigarette

Also Published As

Publication number Publication date
ES2729748T3 (es) 2019-11-06
EP2532258B1 (de) 2019-03-20

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