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EP1460908A1 - Ameliorations se rapportant a des matieres premieres du tabac pouvant etre fumees - Google Patents

Ameliorations se rapportant a des matieres premieres du tabac pouvant etre fumees

Info

Publication number
EP1460908A1
EP1460908A1 EP02791917A EP02791917A EP1460908A1 EP 1460908 A1 EP1460908 A1 EP 1460908A1 EP 02791917 A EP02791917 A EP 02791917A EP 02791917 A EP02791917 A EP 02791917A EP 1460908 A1 EP1460908 A1 EP 1460908A1
Authority
EP
European Patent Office
Prior art keywords
filler material
agglomerated
tobacco filler
tobacco
weight
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
EP02791917A
Other languages
German (de)
English (en)
Other versions
EP1460908B1 (fr
Inventor
Kevin Gerard Mcadam
Gordon R. British American Tobacco GRIERSON
Debra Demeter Woods
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.)
British American Tobacco Investments Ltd IFI
Original Assignee
British American Tobacco Investments Ltd IFI
British American Tobacco Co Ltd
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by British American Tobacco Investments Ltd IFI, British American Tobacco Co Ltd filed Critical British American Tobacco Investments Ltd IFI
Publication of EP1460908A1 publication Critical patent/EP1460908A1/fr
Application granted granted Critical
Publication of EP1460908B1 publication Critical patent/EP1460908B1/fr
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

Links

Classifications

    • 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
    • A24B15/10—Chemical features of tobacco products or tobacco substitutes
    • A24B15/12—Chemical features of tobacco products or tobacco substitutes of reconstituted tobacco
    • A24B15/14—Chemical features of tobacco products or tobacco substitutes of reconstituted tobacco made of tobacco and a binding agent not derived from tobacco
    • A—HUMAN NECESSITIES
    • A24—TOBACCO; CIGARS; CIGARETTES; SIMULATED SMOKING DEVICES; SMOKERS' REQUISITES
    • A24B—MANUFACTURE OR PREPARATION OF TOBACCO FOR SMOKING OR CHEWING; TOBACCO; SNUFF
    • A24B3/00—Preparing tobacco in the factory
    • A24B3/14—Forming reconstituted tobacco products, e.g. wrapper materials, sheets, imitation leaves, rods, cakes; Forms of such products
    • 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
    • A24C5/01—Making cigarettes for simulated smoking devices

Definitions

  • the subject invention relates to smokable filler materials and more particularly to agglomerated tobacco filler material, and smoking articles incorporating such material .
  • the fine tobacco may have a high silica content, which because of its abrasive nature renders the fine tobacco less than desirable for use in a further process which utilises cutting or grinding apparatus.
  • the fine tobacco waste that cannot currently be processed further is taken for landfill. In the current economic climate reduction of landfill is desirable for financial and environmental reasons. Any process which maximises tobacco waste usage has great benefit .
  • Paper-making processes currently used for making reconstituted tobacco products need a high throughput to make them efficient and cost effective. Paper-making processes may not be suitable for certain factories due to lack of expensive apparatus or low volume of materials. Any process utilising waste without the need for high cost apparatus would be of significant benefit.
  • the utilisation of some tobacco dust in reconstituted products is long since known, for example in products such as reconstituted sheet material, bandcast sheet and extrusion products as previously described in our patents GB 2201081 and GB 2201080. Such products utilise processed tobacco dust and can be incorporated into smoking articles at inclusion levels of up to 30% by weight of material in the tobacco rod. Some of these products, in particular bandcast sheet and products of extrusion, have poor handling properties and are susceptible to degradation during further processing.
  • Such reconstituted products have fill values in the range of 2.5cm 3 /g to 3.5cm 3 /g, these fill values being substantially lower than those of cut tobacco (5cm 3 /g to 6cm 3 /g) and reconstituted tobacco sheet (8.0cm 3 /g to 8.5cm 3 /g) .
  • US 4,341,228 describes a process in which tobacco dust is mixed with a bonding material, the mixture is then treated so as to form agglomerated fibres .
  • These agglomerated fibres are mixed with tobacco-parts in a slurry and formed into a sheet by means of a paper-making process. That sheet is then dried and shredded.
  • the agglomerated tobacco dust particles are of a size such that they do not pass through a 56 mesh screen, and preferably do not pass through a 20 mesh (0.84mm) screen.
  • the present invention also has as an object an agglomerated tobacco filler material that is produced using fluidised bed technology and low process temperatures in a one-step procedure.
  • x fill value' shall be taken as meaning the volume measured in cubic centimetres taken up by 1 gram of product.
  • Fill value is measured using a Borgwaldt Densimeter (DD 60A) by taking a known weight of sample contained in a stainless steel cylinder of known dimensions, for example a cylinder of 3cm radius, and subjecting the sample to pressure from a weighted piston (for example 1kg extra weight) for 30 seconds. The residual height of the compressed sample is measured and converted to volume. Results are recorded in cm 3 /g. Measurements of fill value were done with the equipment described.
  • Bulk density shall be taken as meaning the weight of product (grams) per unit volume (cm 3 ) . Results are recorded in g/cm 3 .
  • the present invention provides an agglomerated tobacco filler material comprising tobacco dust and binder, the amount of tobacco dust and ' binder being greater than 65% by weight of the agglomerated tobacco filler material, said agglomerated tobacco filler material having a fill value substantially similar to the fill value of cut tobacco.
  • the tobacco dust and binder are present at more than about 70% by weight of the agglomerated tobacco filler material, more preferably the tobacco dust and binder are present at more than about 75% by weight, and even more preferably at more than about 80% by weight . Even more preferably the tobacco dust and binder are present at more than about 85% by weight and most preferably are present at more than about 90% by weight of the agglomerated tobacco filler material .
  • the agglomerated tobacco filler material has a fill value in the range of about 4.40cm 3 /g to about 5.50cm 3 /g, and more preferably is in the range of about 4.90cm 3 /g to about 5.30cm 3 /g.
  • the agglomerated tobacco filler material has a granule size up to about 3.5mm. More preferably the granule size is at least 0.7mm and not more than about 2.0mm. Most preferably the granule size is in the range of about 0.8mm to about 2.0mm.
  • the agglomerated tobacco filler material has a moisture content in the range of about 8% to about 18%. More preferably the agglomerated tobacco filler material has a moisture content in the range of about 10% to about 15.5%.
  • the agglomerated tobacco filler material of the present invention advantageously has a bulk density substantially similar to that of cut tobacco.
  • the bulk density value of a product is essentially equal to the reciprocal of the fill value for that product.
  • the bulk density should advantageously be matched to that of cut tobacco, such that the agglomerated tobacco filler material will have a reduced tendency to de-blend when compared with products, such as the products described in GB 2201081, having a bulk density substantially dissimilar to that of cut tobacco.
  • the bulk density of the agglomerated tobacco filler material is in the range O.lOg/cm 3 to 0.33g/cm 3 , and more preferably is in the range 0.12g/cm 3 to 0.25g/cm 3 , and even more preferably is in the range 0.12g/cm 3 to 0.14g/cm 3 .
  • the bulk density of the agglomerated tobacco filler material is about 0.14g/cm 3 .
  • the agglomerated tobacco filler material comprises tobacco dust at more than about 70% by weight, preferably more than about 75% by weight. Even more preferably tobacco dust is present in the range of about 75% to about 95% by weight of the agglomerated material.
  • the agglomerated tobacco filler material suitably comprises tobacco dust in the range of about 80% to about 90% by weight of the agglomerated material.
  • the agglomerated tobacco filler material further comprises a binder, wherein the binder is preferably present in the range of about 1% to about 15% by weight of the agglomerated material . More preferably the binder is present in the range of about 1.5% to about 8% by weight, and is more preferably in the range of about 3.0% to about 6% by weight, and even more preferably is about 5% by weight of the agglomerated material .
  • the binder is advantageously present in the range of about 1% to about 30% by weight of the agglomerated material. More preferably when the binder is maltodextrin the binder is present at about 27% by weight of the agglomerated material .
  • the binder is selected from the group consisting of organic binders, such as an alginate, a gum, a cellulose (modified or natural) , a pectin or pectinaceous binder, or the Group I or II metal salts of these binders, such as sodium carboxymethylcellulose (NaCMC) , or sodium alginate; maltodextrin or polyvinylpyrrolidine (PVP) .
  • organic binders such as an alginate, a gum, a cellulose (modified or natural) , a pectin or pectinaceous binder, or the Group I or II metal salts of these binders, such as sodium carboxymethylcellulose (NaCMC) , or sodium al
  • binders are pectinaceous binders, and most preferably the binder is a pectin.
  • organic binders include soluble alginates, such as ammonium alginate, sodium alginate, sodium calcium alginate, calcium ammonium alginate, potassium alginate, triethanolamine alginate and propylene glycol alginate .
  • Cellulosic binders include, for example, cellulose derivatives, such as sodium carboxymethylcellulose, methylcellulose, hydroxylpropylcellulose (HPC) , hydroxylethylcellulose or cellulose ethers.
  • cellulose derivatives such as sodium carboxymethylcellulose, methylcellulose, hydroxylpropylcellulose (HPC) , hydroxylethylcellulose or cellulose ethers.
  • binders include gums such as gum arabic, gum ghatti, gum tragacanth, Karaya, locust bean, acacia, guar, quince seed or xanthan gum, or gels such as agar, agarose, carrageenans, fucoidan and furcelleran.
  • Starches can also be used as organic binders.
  • Other suitable gums can be selected by reference to handbooks, such as 'Industrial Gums', Ed. Whistler (Academic Press).
  • Other suitable binders will be known to a person skilled in the art.
  • the agglomerated tobacco filler material may additionally comprise a humectant .
  • the humectant may suitably be one or- more of glycerol, sorbitol, diethylene glycol and propylene glycol .
  • Other suitable humectants will be known to a person skilled in the art.
  • the humectant is present in the range of 1% to about 5% by weight of the agglomerated material.
  • the humectant improves the flexibility and the moisture content of the agglomerated tobacco filler material such that the filler material is more robust during handling and storage .
  • the agglomerated tobacco filler material may additionally comprise inert fillers and/or flavourant material .
  • the inert filler may be one or more of the group consisting of silicates or alumino-silicates, such as perlite, vermiculite, diatomaceous earth, talc or colloidal silica; chalk, or metal oxides, metal salts or hydroxides such as magnesium oxide, magnesium sulphate, calcium or magnesium carbonate or alumina, or other inert fillers known to those skilled in the art.
  • silicates or alumino-silicates such as perlite, vermiculite, diatomaceous earth, talc or colloidal silica
  • chalk or metal oxides, metal salts or hydroxides such as magnesium oxide, magnesium sulphate, calcium or magnesium carbonate or alumina, or other inert fillers known to those skilled in the art.
  • the present invention also provides a smoking article comprising a rod of smokable material wrapped in a wrapper, wherein agglomerated tobacco filler material of the present invention is blended with cut tobacco and/or reconstituted tobacco.
  • the agglomerated tobacco filler material is present at up to about 25% by weight of the smokable material of the smoking article and more preferably is present at up to about 20% by weight of the smokable material . More preferably the agglomerated tobacco filler material is present in the range of about 2% to aboutl0% by weight of the smokable material, and is even more preferably present in the range of about 5% to about 6% by weight of the smokable material .
  • the agglomerated tobacco filler material used in a smoking article of the present invention advantageously has a granule size in the range of about 0.7mm to about 3.5mm, preferably in the range of about 0.8mm to about 1.4mm and/or a granule size in the range of about 1.4mm to about 2.0mm.
  • Agglomerated tobacco filler material having a granule size of less than 0.5mm may suitably be used in subsequent agglomeration steps.
  • Agglomerated tobacco filler material having a granule size greater than 3.5mm may be ground to a suitable particle size and reused in . subsequent agglomeration steps.
  • a smoking article incorporating the agglomerated tobacco filler material of the present invention has a static burn rate substantially similar to a smoking article incorporating blended Virginia tobacco having 10% reconstituted tobacco sheet.
  • a smoking article incorporating the agglomerated tobacco filler material of the present invention has a firmness value substantially similar to that of a smoking article incorporating a standard Virginia blend having 10% reconstituted tobacco sheet.
  • the present invention further provides a robust agglomerated tobacco filler material having improved handling properties. This is particularly advantageous in view of degradation suffered in tobacco primary and secondary processing stages .
  • the agglomerated tobacco filler material has a robustness measured in accordance with the method described in Example 3 below. Robustness may be expressed as the loss of agglomerated tobacco filler material during the milling process, i.e. it is a measure of the size reduction of granules as a result of degradation. Loss of agglomerated product is the difference between the percentage of agglomerated tobacco
  • the loss after milling is less than about 45% by weight of agglomerated tobacco filler material, more preferably the loss after milling is less than about 40% by weight of agglomerated material.
  • the loss after milling is even more preferably less than about 32% by weight and is most preferably less than about 20% by weight of agglomerated tobacco filler material.
  • the robustness of the agglomerated product may depend upon the binder used in the agglomeration process. The effectiveness of the binders in making a robust product may be listed from most effective to least effective as
  • the binder providing the most robust agglomerated tobacco filler material is Apple pectin.
  • the present invention further provides a method of producing the agglomerated tobacco filler material of the present invention, wherein tobacco dust of particle size not more than 500 ⁇ m is fluidised in a stream of warm air and binder is applied to said fluidised tobacco dust, such that an agglomerated tobacco filler material is produced having a fill value substantially similar to that of cut tobacco.
  • the inlet temperature of the air is not more than 80°C.
  • the binder is sprayed onto the fluidised tobacco dust at a spray rate in the range of about 0.01431/min/kg tobacco dust to about 0.0571/min/kg tobacco dust.
  • the spray rate is about 0.02861/min/kg tobacco dust.
  • the tobacco dust and binder are mixed using the method of the present invention for between 20 and 60 minutes .
  • the agglomerated tobacco filler material produced by the method of the present invention has a fill value substantially similar to that of cut tobacco.
  • Tobacco dust is ground to give a particle size of less than 500 ⁇ m diameter and a bulk density of between 0.3g/cm 3 and 0.38g/cm 3 .
  • 300-350g of tobacco dust is loaded into the product container of an Aeromatic-Fielder STREA-1.
  • the instrument is operated using the top spray nozzle and an inlet air temperature of 60°C.
  • the outlet air temperature is in the range of 27 to 39°C.
  • the dust is then fluidised in a stream of warm air.
  • the agglomeration fluid, containing the binder, is sprayed onto the fluidised tobacco dust at a spray rate of approximately lOml/min. for between 20 and 60 minutes.
  • the resulting agglomerated tobacco product is thus agglomerated and dried in a single operation.
  • the moisture content of the agglomerated tobacco filler material at the end of the agglomeration process is between 12 and 16%, and is ideally about 14%.
  • the agglomerated tobacco filler material is conditioned to a moisture content of between 11%. and 16%.
  • Table 1 shows the fill values for three different tobacco blends and respective agglomerated tobacco filler materials made according to the general method described in Example 1 using Apple pectin as a binder (5% by weight of the agglomerated product) .
  • Table 1 Fill Values for Tobacco and Agglomerated Tobacco
  • Example 3 Agglomerated tobacco filler material made according to the general process described in Example 1 comprising tobacco dust at 92% by weight, 3% by weight humectant and 5% by weight binder.
  • the robustness of the agglomerated tobacco product was determined for agglomerates formed using a number of different binders.
  • a Pascall Ball-Mill having six balls each weighing 22.5g, was used at Speed 9 for a 30 second duration with 10 grams of agglomerated tobacco product.
  • a tobacco blend comprising 6.3kg of blended tobacco minus the standard '10% Reconstituted Tobacco Sheet (RTS) component and 0.7kg (10% by weight) of agglomerated tobacco filler material of 800 ⁇ m to 1400 ⁇ m was produced thus using the agglomerated tobacco filler material as an alternative to reconstituted tobacco.
  • RTS Reconstituted Tobacco Sheet
  • a tobacco blend comprising 6.3kg of blended tobacco minus the standard 10% RTS component and 0.7kg (10% by weight) of agglomerated tobacco filler material of 1400 ⁇ m to 2000 ⁇ m was produced thus using the agglomerated tobacco filler material as an alternative to reconstituted tobacco.
  • Example 7
  • a tobacco blend comprising 6.65kg of blended tobacco inclusive of the standard 10% RTS component and 0.35kg (5% by weight) of agglomerated tobacco filler material of 800 ⁇ m to 1400 ⁇ m was produced thus using the agglomerated tobacco filler material in combination with reconstituted tobacco.
  • Agglomerated tobacco filler material was made according to the general process described in Example 1 further comprising inert filler material.
  • the agglomerated tobacco filler material comprised 76% by weight tobacco dust, 19% by weight inert filler material and 5% by weight binder.
  • RTS reconstituted tobacco sheet
  • the density of a smoking article incorporating the agglomerated tobacco filler material would be expected to be higher than that of a smoking article not containing the agglomerated material .
  • the physical measurements show that the density of smoking articles incorporating the agglomerated product are lower than smoking articles not containing the agglomerated material .

Landscapes

  • Chemical & Material Sciences (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • General Chemical & Material Sciences (AREA)
  • Manufacture Of Tobacco Products (AREA)
  • Compositions Of Macromolecular Compounds (AREA)
  • Catching Or Destruction (AREA)
  • Cigarettes, Filters, And Manufacturing Of Filters (AREA)

Abstract

La présente invention concerne une matière première du tabac agglomérée, qui comprend des résidus de tabac et un liant, le taux des résidus et du liant étant supérieur à 650 % en poids de la matière première du tabac agglomérée, et ladite matière présentant un indice de charge sensiblement identique à l'indice de charge du tabac haché. L'invention concerne en outre un procédé de production de la matière première du tabac agglomérée, et un article du tabac incorporant ladite matière.
EP02791917A 2001-12-21 2002-12-23 Ameliorations se rapportant a des matieres premieres du tabac pouvant etre fumees Expired - Lifetime EP1460908B1 (fr)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
GBGB0130627.3A GB0130627D0 (en) 2001-12-21 2001-12-21 Improvements relating to smokable filler materials
GB0130627 2001-12-21
PCT/GB2002/005899 WO2003055337A1 (fr) 2001-12-21 2002-12-23 Ameliorations se rapportant a des matieres premieres du tabac pouvant etre fumees

Publications (2)

Publication Number Publication Date
EP1460908A1 true EP1460908A1 (fr) 2004-09-29
EP1460908B1 EP1460908B1 (fr) 2007-05-02

Family

ID=9928145

Family Applications (1)

Application Number Title Priority Date Filing Date
EP02791917A Expired - Lifetime EP1460908B1 (fr) 2001-12-21 2002-12-23 Ameliorations se rapportant a des matieres premieres du tabac pouvant etre fumees

Country Status (15)

Country Link
US (1) US20050098187A1 (fr)
EP (1) EP1460908B1 (fr)
JP (1) JP2005512585A (fr)
KR (1) KR20040068292A (fr)
CN (1) CN1617680A (fr)
AT (1) ATE361002T1 (fr)
AU (1) AU2002358221B2 (fr)
BR (1) BR0215208A (fr)
CA (1) CA2469917A1 (fr)
DE (1) DE60219956D1 (fr)
GB (1) GB0130627D0 (fr)
MX (1) MXPA04006160A (fr)
RU (1) RU2293502C2 (fr)
WO (1) WO2003055337A1 (fr)
ZA (1) ZA200405835B (fr)

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ZA200405835B (en) 2005-10-21
WO2003055337A1 (fr) 2003-07-10
US20050098187A1 (en) 2005-05-12
GB0130627D0 (en) 2002-02-06
MXPA04006160A (es) 2004-11-01
EP1460908B1 (fr) 2007-05-02
CA2469917A1 (fr) 2003-07-10
KR20040068292A (ko) 2004-07-30
AU2002358221A1 (en) 2003-07-15
JP2005512585A (ja) 2005-05-12
DE60219956D1 (de) 2007-06-14
ATE361002T1 (de) 2007-05-15
AU2002358221B2 (en) 2006-10-26
RU2004122619A (ru) 2005-08-10
RU2293502C2 (ru) 2007-02-20
CN1617680A (zh) 2005-05-18
BR0215208A (pt) 2004-10-26

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