EP2130444A1 - Matériau à fumer et articles à fumer - Google Patents

Matériau à fumer et articles à fumer Download PDF

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Publication number
EP2130444A1
EP2130444A1 EP08015461A EP08015461A EP2130444A1 EP 2130444 A1 EP2130444 A1 EP 2130444A1 EP 08015461 A EP08015461 A EP 08015461A EP 08015461 A EP08015461 A EP 08015461A EP 2130444 A1 EP2130444 A1 EP 2130444A1
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EP
European Patent Office
Prior art keywords
reagent
smokable
smoke
smokable material
present
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EP08015461A
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German (de)
English (en)
Inventor
Xavier Wertz
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Individual
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Individual
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Priority to PCT/IB2009/005873 priority Critical patent/WO2009147515A1/fr
Publication of EP2130444A1 publication Critical patent/EP2130444A1/fr
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    • A—HUMAN NECESSITIES
    • A24—TOBACCO; CIGARS; CIGARETTES; SIMULATED SMOKING DEVICES; SMOKERS' REQUISITES
    • A24B—MANUFACTURE OR PREPARATION OF TOBACCO FOR SMOKING OR CHEWING; TOBACCO; SNUFF
    • A24B15/00—Chemical features or treatment of tobacco; Tobacco substitutes, e.g. in liquid form
    • A24B15/18—Treatment of tobacco products or tobacco substitutes
    • A24B15/28—Treatment of tobacco products or tobacco substitutes by chemical substances
    • A—HUMAN NECESSITIES
    • A24—TOBACCO; CIGARS; CIGARETTES; SIMULATED SMOKING DEVICES; SMOKERS' REQUISITES
    • A24B—MANUFACTURE OR PREPARATION OF TOBACCO FOR SMOKING OR CHEWING; TOBACCO; SNUFF
    • A24B15/00—Chemical features or treatment of tobacco; Tobacco substitutes, e.g. in liquid form
    • A24B15/18—Treatment of tobacco products or tobacco substitutes
    • A24B15/28—Treatment of tobacco products or tobacco substitutes by chemical substances
    • A24B15/287—Treatment of tobacco products or tobacco substitutes by chemical substances by inorganic substances only
    • 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
    • A24D3/16—Use of materials for tobacco smoke filters of inorganic materials

Definitions

  • the invention relates to smoking materials, smoking articles, filters, methods for making cigarettes, methods for smoking, methods for making filters and methods for making smoking articles which involve the use of an additive and/or device capable of lowering the amount of carbon dioxide in the mainstream of a smokable article during smoking.
  • brackets [ref. x] ) refer to the listing of references presented after Examples.
  • Smoking in general has been known for decades for its harmful effect, usually causing a chronic bronchitis, often leading to cancer.
  • US Patent No. 4,033,359 discloses the substitution of a part of the tobacco by inert mineral salts (mainly CaCO 3 ).
  • This substitution reduces the amount of tobacco for one cigarette and thus, it intends to reduce the amount of any harmful molecules found in tobacco smoke.
  • CaCO 3 only replaces tobacco and is chemically inert. Nevertheless, this substitution leads to produce the same amount of CO 2 and of any other molecule for a given amount of nicotine.
  • US Patent No. 6,782,892 which focuses on two particular molecules: CO and NO.
  • This patent discloses an additive for tobacco which comprises a catalyst for converting CO and NO into CO 2 and N 2 .
  • This catalyst comprises a little amount of MnO and a little amount of Fe 2 O 3 .
  • this US patent does not disclose any mean for decreasing the CO 2 partial pressure in the mainstream smoke. On the contrary, in this patent, the CO 2 partial pressure is increased.
  • the US Patent No. 6,408,856 discloses the use of organic fibres with tobacco, for example, pure cellulose. Tobacco taste and nicotine are added to these cellulose fibres in order to produce the effect that smokers expect from tobacco smoking. Nevertheless, in this US patent, numerous molecules comprised in tobacco smoke are removed but the whole CO 2 remains, produced by the cellulose combustion.
  • the present invention allows to overcome these problems by providing a smokable material or a smoke filter comprising a compound or a device capable of interacting with CO 2 physically and/or chemically, leading to a CO 2 removing from the mainstream of smoke generated during the smoking of the smokable material.
  • the present invention relates to a smokable material comprising at least a reagent capable of reacting with carbon dioxide.
  • smoking as used herein is used generically and is understood as the production of smoke from burnout and/or combustion of a smokable material, such as for example dried or cured leaves of the tobacco plant. The produced smoke is intended to be inhaled.
  • mainstream smoke refers to a mixture of gases which is directly inhaled by the smoker from the smoking article.
  • reagent as used herein is used generically and is understood as any compound capable of reacting chemically with carbon dioxide. It can be added in a smokable material and/or a smoke filter and/or in a smokable device, for example during its manufacturing process or after. The reagent preferably lasts at least till the end of the smoking of the material and/or of the article.
  • reagents include metals, metal oxides, metal hydroxides, doped metal oxides (for example, ZrO 2 doped with Y 2 O 3 ), organic molecules, organo-metallic molecules, metal peroxides and/or mixtures thereof.
  • smokable material as used herein is used generically and is understood as any material that can be lit and burned leading to a smoke intended to be inhaled.
  • smokable materials include tobacco cut-filler, for example for pipe smoking or cigarette making and other smokable materials without tobacco, such as, for example, cocoa substitutes, eucalyptus, cellulose or inorganic burnable material.
  • the smokable material can further comprise other compounds and/or additives, for example flavour agents, binders.
  • smokable article as used herein is used generically and is understood as any object or device set at the time of the beginning of its smoking and/or during its smoking. Examples of such smokable articles include cigarettes, cigarettes with an added removable filter, pipes loaded with cut-filler, water-pipes loaded with any smokable material.
  • interacting with CO 2 physically is used generically and is understood as any CO 2 interaction which does not involve any chemical reaction. It can be for example CO 2 capture by condensation, adsorption, absorption, etc.
  • the CO 2 could be captured by a cooling of the smoke at -57°C (condensation temperature for the CO 2 at atmospheric pressure) followed by the elimination of the liquid CO 2 and the re-heating of the remaining components of the smoke.
  • the CO 2 could be captured by an absorbent, such as, for example, plain water or an adsorbent, such as, for example, zeolites.
  • interacting with CO 2 chemically is used generically and is understood as any CO 2 interaction which involves any chemical reaction.
  • the CO 2 can be removed by the mean of a reaction that may lead to a new chemical product, such as, for example, the following chemical reaction: Ca(OH) 2 + CO 2 ⁇ CaCO 3 + H 2 O.
  • the terms “particle”, “particles” as used herein are used generically and are understood as a material in discrete units.
  • the particles can include granules, pulverulents, powders, spheres or flakes.
  • the particles can have any desired shape such as, for example, cubic, rod-like, polyhedral, spherical or semi-spherical, rounded or semi-rounded, angular, irregular, flat or plate-like, etc. Shapes having a large greatest dimension/smallest dimension ratio, like needles, flakes and fibers, are also contemplated for use herein.
  • the use of "particle” or “particulate” may also describe an agglomeration including more than one particle, particulate, or the like.
  • the inventor has measured that, firstly a smoker inhales 6.3x10 -5 m 3 CO 2 for one cigarette, secondly the CO 2 partial pressure comprised in the cigarette smoke may range from 10 to 15% (about 63ml CO 2 at 20°C and 1 atmosphere pressure).
  • the partial pressure of CO 2 may usually range around 6% in alveolar air, far lower than that which may be found in the smoke of a cigarette.
  • Figure 3 represents the CO 2 (scheme A) and O 2 (scheme B) variations in the atmosphere breathed by different mice groups. These measurements were made in the atmosphere within the whole-body plethysmograph (Buxco Electronics Inc., Troy, NY) in which mice where submitted to breathing various CO 2 concentration. Each line with its particular dots shape represents a particular mice group and the same group is represented with the same dots shape on both schemes A and B.
  • Figure 4 shows pro-inflammatory cytokines transcription in HT-29 after exposure to CO 2 . It represents the RNAse Protection Assay performed on RNA from HT-29 cells after a 48 hours exposure to various CO 2 concentrations (in columns). It shows that an increased level of CO 2 increases the transcription level of RANTES, MIP-1 ⁇ , MIP-1 ⁇ , MCP-1 and IL-8.
  • Figure 5 shows pro-inflammatory cytokines secretion levels in HT-29 cells and in A549 cells after CO 2 exposure. It represents the precise measurements of pro-inflammatory cytokines secretions by cells, after 48 hours exposure to various CO 2 concentrations, using a Cytokine ELISPOT Assay, one particular dot for each of all successive experiments.
  • Scheme A is for IL-8 secretion by HT-29 cells measurements
  • scheme B is for IL-8 secretion by A549 cells measurements
  • scheme C is for MCP-1 secretion by HT-29 cells measurements
  • scheme D is for MCP-1 secretion by A549 cells measurements
  • scheme E is for IL-6 secretion by HT-29 cells measurements
  • scheme F is for IL-6 secretion by A549 cells measurements.
  • Figure 6 shows pro-inflammatory cytokines transcription in mouse lung cells after CO 2 exposure. It represents the RNAse Protection Assay performed on RNA from mouse lung cells after an exposure to various CO 2 concentrations (in columns). It shows that an increased level of CO 2 increases the transcription level of RANTES, MIP-1 ⁇ , MIP-1 ⁇ , IP-10, MCP-1, TCA-3 and eotaxin. Non-pro-inflammatory proteins L32 and GAPDH secretion levels do not change.
  • Figure 7 shows pro-inflammatory cytokines secretion in mouse lung cells after CO 2 exposure. It represents the precise measurements of pro-inflammatory cytokines secretions by mouse lung cells, after an exposure to various CO 2 concentrations, using a Cytokine ELISPOT Assay, one particular dot for each of all successive experiments.
  • Scheme A is for RANTES secretion measurements
  • scheme B is for IL-6 secretion measurements
  • scheme C is for MIP-2 secretion measurements.
  • Figure 8 shows the induction of Mucin-5AC production in mice, revealed by a Western-Blot analysis. ⁇ -actin is used for control.
  • the CO 2 may cause this inflammation through the local hyperosmolarity it generates.
  • a possible mechanism for this hyperosmolarity creation contains 4 major elements, the 3 first ones being simultaneous:
  • This phenomenon is maintained by a regular smoking so that the biological inflammation removing process cannot be achieved.
  • the present invention presents the advantage of actively reducing the amount of CO 2 in smoke.
  • the reagent present in the smoking material of the present invention can be selected from the group comprising metals, salts, metal oxides, metal hydroxides, doped metal oxides, organic molecules, organo-metallic molecules, metal peroxides and/or mixtures thereof.
  • metals include Cu, Fe, Co, Ni, Ti, Pb, Cd.
  • metal oxides include MnO, MnO 2 , ZnO 2 , CaO 2 , Fe 2 O 3 , Sr 2 TiO 4 , ZrO 2 .
  • Examples of preferred of such metal hydroxides include NaOH, KOH, LiOH, Ca(OH) 2 , Mn(OH) 2 , Sr(OH) 2 , Cu(OH) 2 , Mg(OH) 2 , Pb(OH) 2 , Ba(OH) 2 , Fe(OH) 3 .
  • Examples of preferred of such doped metal oxide include ZrO 2 doped with Y 2 O 3 .
  • Examples of preferred of such organic molecules include haemoglobin and plasma proteins. Examples for preferred of such organo-metallic molecules include zinc acetate, lead acetate and calcium acetate.
  • the reagent used as an additive to the smokable material is preferably capable of reacting with carbon dioxide to form inert molecules and, in particular, preferably capable of forming products that are physically and chemically stable at the burning temperature of the smokable material.
  • a N-type thermocouple indicates a maximum burning temperature of a cigarette around 850°C. Then, the reagent is preferably capable of reacting with carbon dioxide to form products stable at temperatures higher than 850°C. Otherwise, the leading product could release the captured CO 2 .
  • the reagent is preferably selected within the group comprising CaO, ZnO 2 , NaOH, KOH, LiOH, Ca(OH) 2 , Mn(OH) 2 , Sr(OH) 2 , Mg(OH) 2 , Pb(OH) 2 , Cu(OH) 2 , Ba(OH) 2 or Fe(OH) 3 or a combination thereof.
  • the reagent is more preferably MnO, Mn(OH) 2 , CaO, Ca(OH) 2 , NaOH or KOH or a combination thereof. Indeed, these compounds present the advantage of forming stable products at 850°C by reacting with carbon dioxide.
  • the reagent is preferably a metal hydroxide of formula M(OH) x , where M is a cation metal selected from the group consisting of K + , Na + , K + , Ca 2+ , Cu 2+ , Mn 2+ , Sr 2+ , Mg 2+ , Pb 2+ , Ba 2+ or Fe 3+ , and x is such that M(OH) x is neutral.
  • M is a cation metal selected from the group consisting of K + , Na + , K + , Ca 2+ , Cu 2+ , Mn 2+ , Sr 2+ , Mg 2+ , Pb 2+ , Ba 2+ or Fe 3+
  • x is such that M(OH) x is neutral.
  • the reagent is preferably NaOH, KOH, LiOH, Ca(OH) 2 , Mn(OH) 2 , Sr(OH) 2 , Mg(OH) 2 , Pb(OH) 2 , Cu(OH) 2 , Ba(OH) 2 or Fe(OH) 3 , or a combination thereof.
  • the reagent is more preferably MnO, Mn(OH) 2 , CaO, Ca(OH) 2 , NaOH or KOH or a combination thereof.
  • the reagent is preferably in the form of particles having an average particle size of from 10 -9 m to 1 cm, preferably from 5x10 -9 m to 10 -3 m, more preferably from 5x10 -9 m to 1x10 -5 m, and more preferably from 1x10 -9 m to 1x10 -7 m.
  • These small size present the advantage to maximize the particles surface area and then to maximize the surface in contact with the mainstream of smoke, for a better efficiency.
  • the reagent present in the smoking material of the present invention can be present in an amount effective to capture at least 0.1% (mol), preferably at least 68% (mol), preferably at least 100% (mol), and more preferably between 100% (mol) and 150% (mol) of the carbon dioxide comprised in the mainstream of smoke generated during the smoking of the smokable material.
  • the value of 68% of the carbon dioxide generated in the mainstream during smoking correspond to 5% of the residual CO 2 present in the smoke. This is the threshold the experimentations have shown non causing inflammation.
  • Using more than the stoichiometric need is preferred in order to be sure to optimize the CO 2 smoke lowering until the end of the smoking and also to be sure that the present invention is efficient regardless the various ways smokers are smoking, as smokers usually do not smoke exactly according to ISO 3308.
  • the reagent is preferably added to the smokable material in an amount of 0.001 g to 10 g per g of smokable material, preferably 0.2 to 0.8 g, preferably 0.3 to 0.5 g, and more preferably 0.4 g per g of smokable material.
  • the preferred reagent is MnO and is added to the smokable material in an amount of 0.1 g to 10 g per g of smokable material, preferably 0.2 to 0.8 g per g of smokable material, preferably 0.3 to 0.5 g, and more preferably 0.4 g per g of smokable material.
  • the present invention also relates to a smoke filter, for example a solid smoke filter, said smoke filter comprising a reagent capable of reacting with carbon dioxide, in particular carbon dioxide that is comprised in the mainstream of smoke generated during the smoking of the smokable material.
  • a smoke filter for example a solid smoke filter
  • said smoke filter comprising a reagent capable of reacting with carbon dioxide, in particular carbon dioxide that is comprised in the mainstream of smoke generated during the smoking of the smokable material.
  • the reagent can be homogeneously embedded among the filter or be present in a particular place, for example in a appropriate compartment.
  • the reagent is as defined above.
  • the reagent present in the solid filter for example a solid smoke filter, of the present invention is preferably present in an amount effective to capture at least 1% (mol), preferably at least 68% (mol), preferably at least 100% (mol) and preferably at least 200% (mol) of the carbon dioxide comprised in the mainstream of smoke generated during the smoking of the smokable material. It is preferable to use a higher amount of reagent than the amount required for stoichiometry. Indeed, the smoke repartition inside the filter intends not to be homogeneous, especially due to the air-streams coming through the papers porosities.
  • the present invention also relates to a liquid smoke filter comprising at least a reagent capable of reacting with carbon dioxide.
  • Said carbon dioxide is for example the one comprised in the mainstream of smoke generated during the smoking of the smokable material.
  • Said filter is for example the liquid filter in a water pipe. Examples for water pipes comprise hookas.
  • the reagent is as defined above.
  • the reagent present in the liquid smoke filter of the present invention can be present in an amount effective to capture at least 1% (mol), preferably at least 68% (mol), preferably at least 100% (mol), preferably at least 200% (mol) and more preferably at least 1000% (mol) of the carbon dioxide comprised in the mainstream of smoke generated during the smoking of the smokable material. It is preferable to use a higher amount of reagent than the amount required for stoichiometry. Indeed, the smoke repartition inside the filter intends not to be homogeneous and the liquid filter intends not to be homogeneously stirred by the smoke stream.
  • the present invention also relates to a smokable article containing a smokable material according to the present invention and/or a smoke filter, for example a solid smoke filter, according to the invention and/or a liquid smoke filter according to the invention.
  • a smoke filter for example a solid smoke filter, according to the invention and/or a liquid smoke filter according to the invention.
  • the use of the smokable material of the present invention allows to reduce the CO 2 content in the smoke as follows: while inhaled through the smokable article, the CO 2 (and in particular, CO 2 comprised in the smoke produced by the combustion) goes through the smokable material and reacts with the reagent it contains. The CO 2 is then removed from the mainstream smoke.
  • the present invention is used in the filter or in any device.
  • An example for an external device added to a smokable device in order to obtain a smokable article is an additional pluggable filter, according to the present invention.
  • the present invention is preferably comprised in a removable cartridge which both ends are porous and the cartridge is placed inside a smoking device.
  • a removable cartridge can be used in a Denhill Denicotea cigarette holder or in a Denhill Denicotea pipe.
  • the invention also relates to a sealed casing which opening is hermetically closed by a gum gasket used for long-term storage of a smokable material according to the invention and/or a smoke filter according to the invention and/or a smokable article according to the invention and/or an external device according to the invention.
  • a long-term storage in the atmosphere would lead to have the present invention reacting with the atmospheric CO 2 , thus loosing its efficiency at the smoking time.
  • a reagent selected from the group comprising KOH and/or NaOH is preferred, such as for example in the case of a water pipe.
  • smokable materials and/or articles according to the present invention would preferably contain as less as possible reagents for molecules soluble in water and conveyable by the smoke to the lung (Tars are not soluble in water).
  • NH 3 is usually added for increasing the pH and thus facilitating the nicotine absorption.
  • Example 1 Preparation of a smokable material of the present invention comprising the additif MnO
  • the mixture is cast as a sheet of about 0.45 mm thickness onto a polyethylene sheet.
  • the resulting cast sheet is dried at ambient temperature for about 24 hours and then cut into a cut-filler.
  • Example 2 Preparation of a smokable article of the present invention: a cigarette
  • the smoking material of example 1 is processed in an usual cigarette making machinery and the tobacco rod is wrapped in a non porous cigarette paper (cigarette paper ref. P-2831-60-1 from Kimberly-Clark Corp.) and a cellulose acetate filter (from Eastman Chemical Products, Inc.) is added.
  • a non porous cigarette paper cigarette paper ref. P-2831-60-1 from Kimberly-Clark Corp.
  • a cellulose acetate filter from Eastman Chemical Products, Inc.
  • Example 3 Preparation of a smokable article containing two different tobacco cut-fillers wrapped in a porous paper
  • First tobacco cut-filler A smokable material is processed the same way as in example 1 with a doubled MnO powder quantity (54g).
  • Second tobacco cut-filler 81g flue-cured Virginia tobacco (supplied by Sree Ramakrishna Impex Ltd., 507, Saptagiri Towers, Begumpet HYDERABAD-500016, AP India 500 016) is suspended in 500g distilled water with 0.01g methyl cellulose (available as Methocel A4M from The Dow Chemical Co.). This mixture is agitated using a nine speed Hamilton Beach Stand Mixer, Model No. 53, set at Speed 1, for one hour. The mixture is cast as a sheet of about 0.45 mm thickness onto a polyethylene sheet. The resulting cast sheet is dried at ambient temperature for about 24 hours and then cut into a cut-filler.
  • the tobacco rod comprises two different concentric cut-fillers, coaxially positioned, the outer being the second cut-filler of this example and the inner being the first cut-filler of this example.
  • a porous cigarette paper is used which is the perforated ECUSTA 01788 from Ecusta Corp.
  • the cigarette comprises (1) a tobacco rod wrapped in (2) a porous cigarette paper.
  • the tobacco rod have two concentric layers : (3) a centre of tobacco cut-filler comprising the present invention within its additives and round the former centre, a cylinder of tobacco cut-filler which does not comprise the present invention within its additives.
  • Example 4 Preparation of a smoke filter and a smokable article of the present invention
  • a cigarette filter is prepared as follows: preparing 2 filter materials (plain filters) in cellulose acetate (1) (from Eastman Chemical Products, Inc.); forming two filter sections by wrapping plug wrap paper (3) around each of the filter materials; loading 0.2g of 10-50 microns MnO powder (ref. MN-OX-02-P from American Elements, 23 Rue des Ardennes, 75019 Paris, France) in the space on the cut tobacco side and in the space on the mouth side between the two filter sections; and wrapping forming paper around the two filter sections.
  • the outer wrap is a non-porous paper plug wrap, such as Ref. No. 646 available from Kimberly-Clark Corp. MnO is loaded in the space on the cut tobacco side.
  • the cigarette is then proceeded as an usual cigarette making process.
  • the filter rod is produced in a plug combiner machine.
  • a variety of different types of plug combiner machines can be used, including the Hauni MULFI combiner (produced by Hauni-Werke Korber & Co. KG of Hamburg, Germany), the Molins DR25 (produced by Molins PLC, Milton Keynes, United Kingdom), the Molins DAPTC, etc.
  • the cigarette comprises (4) a tobacco rod and a filter rod wrapped in (3) a paper.
  • the filter rod is composed of (1) two usual fibres filters (cellulose acetate) and the gap between these fibres filters is filled with (2) a foam and/or a powder comprising the present invention.
  • Example 5 Preparation of a liquid filter and a water-pipe of the present invention.
  • the hookah is then used as usually.
  • Example 6 Preparation for a cartridge, a cigarette with a cigarette holder and a pipe of the present invention.
  • a Dunhill Denicotea cartridge is open by carefully removing its red top.
  • the silica gel content is removed and replaced by 1-2 mm MnO granules (ref. MN-M-02-GR from American Elements, 23 Rue des Ardennes, 75019 Paris, France).
  • the red top is glued back and the cartridge of the present invention is used as an usual Denicotea cartridge, in a cigarette holder or in a pipe.
  • Example 7 Preparation of a smoke filter and a smokable article of the present invention.
  • a smoke filter is prepared according to the method disclosed by the 1974 US Patent 3802441 , where the embedded mineral additive is replaced by the MnO powder of example 1 in the amount of 0.3g MnO for one cigarette filter. The cigarette is then proceeded as an usual cigarette making process.
  • Example 8 Preparation of a smokable material of the present invention comprising the additif CaO.
  • Example 1 The same material as in example 1 is prepared, where the MnO powder is substituted with 22g CaO in nanopowder which scale is 50x10 8 m - 80x10 -8 m and specific surface area is in the 15-50m 2 .g -1 (ref. CA-OX-01-NP from American Elements, 23 Rue des Ardennes, 75019 Paris, France).
  • Example 9 Preparation of a smokable article of the present invention: a cigarette
  • a smokable article is manufactured as in example 2 with the smokable material prepared in example 8.
  • Example 10 Preparation of a smokable article containing two different tobacco cut-fillers wrapped in a porous paper
  • First tobacco cut-filler A smokable material is processed the same way as in example 8 with a doubled CaO powder quantity (44g).
  • the CaO powder is the same as in example 8.
  • Second tobacco cut-filler A smokable material is proceeded as the second tobacco cut-filler of example 3.
  • the smokable article is then proceeded as in example 3.
  • the cigarette comprises (1) a tobacco rod wrapped in (2) a porous cigarette paper.
  • the tobacco rod have two concentric layers : (3) a centre of tobacco cut-filler comprising the present invention within its additives and round the former centre, a cylinder of tobacco cut-filler which does not comprise the present invention within its additives.
  • Example 11 Preparation of a smoke filter and a smokable article of the present invention
  • a filter and the smokable article are prepared as in example 4, where the MnO granules are replaced with 0.3g CaO granules (ref. Rhenogran CaO-80 from Rhein Chemie).
  • the cigarette comprises (4) a tobacco rod and a filter rod wrapped in (3) a paper.
  • the filter rod is composed of (1) two usual fibres filters (cellulose acetate) and the gap between these fibres filters is filled with (2) a foam and/or a powder comprising the present invention.
  • Example 12 Preparation of a liquid filter and a water-pipe of the present invention.
  • the hookah is then used as usually.
  • Example 13 Preparation of a cartridge and a smokable article of the present invention.
  • a Dunhill Denicotea cartridge is open by carefully removing its red top.
  • the silica gel content is removed and replaced by the same volume of CaO granules (ref. Rhenogran CaO-80 from Rhein Chemie).
  • the red top is glued back and the cartridge is used as an usual Denicotea cartridge, in a cigarette holder or in a pipe.
  • Example 14 Preparation of a smoke filter and a smokable article of the present invention.
  • a smoke filter is prepared according to the 1966 British patent GB1037435 where the embedded additive is the CaO powder of example 8 in the amount of 0.3 g for one cigarette filter. The cigarette is then proceeded as an usual cigarette making process.
  • Example 15 Preparation of a smokable material of the present invention comprising the additif Ca(OH) 2 .
  • Example 16 Preparation of a smokable article of the present invention: a cigarette
  • a smokable article is manufactured as in example 2 with the smokable material prepared in example 15.
  • Example 17 Preparation of a smokable article containing two different tobacco cut-fillers wrapped in a porous paper
  • a smokable material is processed the same way as in example 15 with a doubled Ca(OH) 2 powder quantity (56.4g).
  • the Ca(OH) 2 powder is the same as in example 15.
  • Second tobacco cut-filler A smokable material is proceeded as the second tobacco cut-filler of example 3.
  • the smokable article is then proceeded as in example 3.
  • the cigarette comprises (1) a tobacco rod wrapped in (2) a porous cigarette paper.
  • the tobacco rod have two concentric layers : (3) a centre of tobacco cut-filler comprising the present invention within its additives and round the former centre, a cylinder of tobacco cut-filler which does not comprise the present invention within its additives.
  • Example 18 Preparation of a smoke filter and a smokable article of the present invention
  • a filter and the smokable article are prepared as in example 4, where the MnO granules are replaced with 0.3g Ca(OH) 2 10-50 micron granules (ref. CA-HD-01 from American Elements 23 Rue des Ardennes, 75019 Paris, France, particle size on demand).
  • the cigarette comprises (4) a tobacco rod and a filter rod wrapped in (3) a paper.
  • the filter rod is composed of (1) two usual fibres filters (cellulose acetate) and the gap between these fibres filters is filled with (2) a foam and/or a powder comprising the present invention.
  • Example 19 Preparation of a cartridge and a smokable article of the present invention.
  • a Dunhill Denicotea cartridge is open by carefully removing its red top.
  • the silica gel content is removed and replaced by the same volume of Ca(OH) 2 1-2 mm granules (ref. CA-HD-01 from American Elements, 23 Rue des Ardennes, 75019 Paris, France, particle size on demand).
  • the red top is glued back and the cartridge is used as an usual Denicotea cartridge, in a cigarette holder or in a pipe.
  • Example 20 Preparation of a smoke filter and a smokable article of the present invention.
  • a smoke filter is prepared according to the 1966 British patent GB1037435 where the embedded additive is the Ca(OH) 2 powder of example 15 in the amount of 0.3g for one cigarette filter. The cigarette is then proceeded as an usual cigarette making process.

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  • Chemical & Material Sciences (AREA)
  • Health & Medical Sciences (AREA)
  • General Health & Medical Sciences (AREA)
  • Toxicology (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • General Chemical & Material Sciences (AREA)
  • Inorganic Chemistry (AREA)
  • Engineering & Computer Science (AREA)
  • Materials Engineering (AREA)
  • Cigarettes, Filters, And Manufacturing Of Filters (AREA)
EP08015461A 2008-06-06 2008-09-02 Matériau à fumer et articles à fumer Withdrawn EP2130444A1 (fr)

Priority Applications (1)

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WO2018033476A1 (fr) * 2016-08-17 2018-02-22 Philip Morris Products S.A. Article produisant un aérosol comprenant un nouveau substrat de tabac
CN111109636A (zh) * 2020-01-22 2020-05-08 红云红河烟草(集团)有限责任公司 一种实验室用烟叶复烤设备

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GB201112539D0 (en) 2011-07-21 2011-08-31 British American Tobacco Co Porous carbon and methods of production thereof

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CN101766329B (zh) * 2010-01-13 2012-06-06 云南中烟昆船瑞升科技有限公司 一种烟梗原料的预处理方法
WO2018033476A1 (fr) * 2016-08-17 2018-02-22 Philip Morris Products S.A. Article produisant un aérosol comprenant un nouveau substrat de tabac
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CN111109636A (zh) * 2020-01-22 2020-05-08 红云红河烟草(集团)有限责任公司 一种实验室用烟叶复烤设备

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