US20040074508A1 - Smokable filler material containing a fruit material - Google Patents
Smokable filler material containing a fruit material Download PDFInfo
- Publication number
- US20040074508A1 US20040074508A1 US10/297,822 US29782202A US2004074508A1 US 20040074508 A1 US20040074508 A1 US 20040074508A1 US 29782202 A US29782202 A US 29782202A US 2004074508 A1 US2004074508 A1 US 2004074508A1
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- Prior art keywords
- filler material
- smokable filler
- material according
- fruit
- weight
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Classifications
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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
- A24B15/10—Chemical features of tobacco products or tobacco substitutes
- A24B15/16—Chemical features of tobacco products or tobacco substitutes of tobacco substitutes
- A24B15/165—Chemical features of tobacco products or tobacco substitutes of tobacco substitutes comprising as heat source a carbon fuel or an oxidized or thermally degraded carbonaceous fuel, e.g. carbohydrates, cellulosic material
-
- 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
- A24B15/16—Chemical features of tobacco products or tobacco substitutes of tobacco substitutes
Definitions
- This invention relates to a smokable filler materials, in particular but not exclusively, a smokable filler materials to be used in cigarettes.
- This invention is able to provide a smokable filler material in which fruit material is the or one of the main combustible fuel materials of the smokable filler materials.
- the invention is also able to be used with or without additional tobacco material, whether cut tobacco leaf or cut reconstituted tobacco sheet material.
- the smokable filler material has a smoking quality that enables the product developer to select appropriate flavours and casings in order to provide an acceptable smoking taste and flavour.
- the smoke derived from smokable filler material according to the invention also provides significant reduction to the smoker of some smoke components.
- the present invention provides a smokable filler material comprising a non-combustible inorganic filler, a binder, and as a major organic combustible fuel material, a fruit material.
- the inorganic filler material is in the range of 30-90% by weight of the dry materials.
- Smokable filler material produced by means of casting advantageously comprises inorganic filler material in the range of 50-80%, and more preferably >60% and even more preferably >70% by weight of the dry materials.
- smokable filler material produced by means of an extrusion process preferably comprises inorganic filler material in the range of 30-70% by weight of the dry materials. More preferably the inorganic filler material is in the range of 35-60%, and is even more preferably in the range 45-55% and more preferably about 50% by weight of the dry materials.
- the binder is preferably in the range of 3-25% by weight of the dry materials. More preferably the binder is in the range of 5-15%, and is more preferably less then 12% or even more preferably less than 10% by weight of dry materials. The binder may advantageously be about 7.5% by weight of dry materials.
- the fruit material is preferably in the range of 2-50% by weight of the dry materials.
- the fruit material is more preferably in the range of 5-15% and is even more preferably 10% or more, and may advantageously be about 12.5%.
- the fruit material is preferably in the range of 2-50% by weight of dry materials. More preferably the fruit material is in the range of 10-30% and is even more preferably about 20% by weight of the dry materials.
- the smokable filler material made by a casting process may advantageously comprise 10-20% fruit, 10% sodium alginate, 70% chalk and 10% glycerol.
- An acceptable filler material can be produced using 7.5% sodium alginate with a consequent increase in the fruit content.
- the smokable filler material made by an extrusion process may advantageously comprise 10-20% fruit, 20% starch, 50% chalk, 10% hydroxypropylcellulose and 0-10% glycerol.
- the non-combustible inorganic filler material is preferably an inorganic filler selected from the group comprising silicates or alumino-silicates, such as perlite, vermiculite, diatomaceous earth, talc or colloidal silica; or metal oxides, metal salts or hydroxides such as magnesium oxide, magnesium sulphate, calcium or magnesium carbonate or alumina.
- the inorganic filler is a low density material, suitably of ⁇ 5 g/cm 3 , preferably less than 4 g/cm 3 and more preferably ⁇ 3 g/cm 3 . Mixtures of these fillers are also acceptable.
- the smokable filler material may also comprise an organic filler.
- the organic filler material is inert or relatively inert when alone, i.e. will not readily maintain burning, but in a mixture may become more combustible, i.e. will maintain burning.
- Suitable organic fillers include insoluble alginates, such as calcium or magnesium alginate, calcium pectinate or alginic acid, as well as non-modified cellulose, such as treated or non-treated wood pulp or alpha cellulose, for example. Mixtures of inert organic fillers and inorganic fillers may also be used.
- the organic filler is advantageously present in the range of 0-40%.
- the organic filler helps to improve the ash characteristics of the smokable filler material. It may be advantageous to include a combustible organic material with naturally low nitrogen content, i.e. less than 0.25%, more advantageously less than 0.20% and even more advantageously less than 0.1% dwb of total nitrogen.
- the binder is an organic binder, 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 or sodium alginate.
- organic binder 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 or sodium alginate.
- Much preferred binders are alginic binders which include soluble alginates such as ammonium alginate, sodium alginate, sodium calcium alginate, calcium ammonium alginate, potassium alginate, triethanol-amine alginate and propylene glycol alginate.
- Alginic binders provide the preferred smoking mechanics and taste and flavour properties for the smokable filler according to the invention.
- Cellulosic binders include, for example, cellulose derivatives, such as sodium carboxymethylcellulose, methyl cellulose, hydroxypropylcellulose, hydroxyethyl cellulose or cellulose ethers. These binders are preferred for extrusion purposes.
- organic 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. Pectins and pectinaceous materials can also be used as binders. 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). Inorganic non-combustible binders, such as some cements, for example, Portland cement, may also be used. Combinations of the above may also be used.
- the binder is an alginate, and in particular the monovalent alginates
- the fruit material is suitably one or more of most derivatives from fruit, such as either whole fruit, dried fruit, fruit pulp, fruit concentrate, i.e. the fruit residue arising from the manufacture of fruit juices, fruit paste, fruit purée, a powdered extract of the fruit or a liquid extract of the fruit. If a liquid extract is used, the extract is preferably not purely sugars from the fruit. Mixtures of each class are also acceptable. Granulation of the fruit material by, for example, mixing a fruit liquid or syrup with the inorganic filler, drying and granulating is also advantageous for some fruit derivatives, in terms of ease of processing.
- the fruit selected has a low sugar content, i.e. of the order of 70% or less. It has been found to be advantageous for high sugar containing fruits to have sugar removed therefrom, so that-upon addition of the fruit material the sugar content is preferably less than 20%.
- the fruit material is selected from the class comprising soft fruits, citrus fruit, berries or processed fruit material, such as dried powders or dietary fibre.
- the fruit material is selected to have a low nitrogen content, advantageously of ⁇ 1.8% dwb and more advantageously of ⁇ 1.0% dwb, and even more advantageously of ⁇ 0.6% dwb.
- the fruit is suitably selected from one or more of the following: pineapple, mango, raisin, apple, banana, apricot, lemon, peach, kiwi or grape.
- the first three of this list are particularly preferred. Seeds from these materials are not, at this stage, considered to be of value in the present invention.
- Fruit powder or concentrate may each be mixed with water until fully dissolved. Pulp from fruit is suitably pulverised thereby becoming finely divided, yet allowing the fibres to remain relatively intact. Fibres may be separated from the liquid in order to change the ratio of fibres to liquid, if desired. If dried fruit is utilised, the fruit is preferably boiled in water. If high sugar fruits are utilised they are preferably boiled and percolated, for example, to remove a proportion of the organic acids and sugars, and then blended to produce a homogeneous mixture or paste.
- the aerosol generating source preferably comprises aerosol forming means, such as glycerol and/or other aerosol forming compounds illustrated in our co-pending PCT Application No. WO96/07336. These include polyhydric alcohols, propylene glycol and triethylene glycol, esters such as triethyl citrate, triacetin or triethylene glycol diacetate (TEGDA), or high boiling point hydrocarbons. Other suitable aerosol forming means will be known to those skilled in the art.
- aerosol generating means is incorporated into the filler material at a level of 0-30%.
- the aerosol generating means is more preferably in the range of 5-15%, and even more preferably about 10% by weight of the dry materials.
- the aerosol generating means is more preferably in the range 0-10% and even more preferably in the range 3-5% or less by weight of dry materials.
- the aerosol generating means is pumped into the barrel of the extruder. Plasticisers are also desirable.
- the plasticiser is the same as one of the list of suitable aerosol forming materials, the plasticiser may suitably be present at a level such that it is not the main aerosol producer.
- the additional components i.e. those other than filler, fruit and binder, are selected according to the final material properties desired.
- Other taste and flavour materials such as coffee, cocoa, caramel, flavours from roots, such as ginger or licorice, for example, tobacco dust or tobacco extracts may also be added to the smokable filler material at levels ⁇ 10%, and preferably at levels of ⁇ 5%, by weight of the dry materials.
- the final slurry has a viscosity between 60,000-400,000 centipoise and is more preferably in the range of 150,000-250,000 centipoise.
- the final viscosity will depend on the method of casting (drum or band), extrusion or paper making process to be used.
- the final slurry is then suitable for casting whereupon it may then be stored, conditioned, and then shredded to produce cut smokable filler material.
- the smokable filler material may alternatively be produced by means of extrusion, which extruded material may be a foamed or non-foamed material.
- Suitable expansion medium or foaming means are described in our co-pending PCT Application No. WO 96/07336, the subject matter thereof in relation to expansion mediums being incorporated herein by reference thereto.
- Suitable expansion mediums include starch, pullulan or other polysaccharides, including cellulose derivatives, solid foaming agents, inorganic salts and organic acids providing in situ gaseous agents, organic gaseous agents, inorganic gaseous agents and volatile liquid foaming agents.
- the expansion medium may partly replace the inorganic filler.
- the expansion medium may be present in the range of 0-40% by weight of the dry materials and preferably less than 30% and more preferably is about 20%. Water is most commonly the preferred volatile expansion agent for such expansion systems. Alternative expansion agents are well known.
- the smokable filler material is advantageously prepared by mixing all the powdered material including the binder, then pumping water and glycerol into the barrel of the extruder.
- the extruded material may be rods, strands, filaments or sheet material which is then cut to provide filler material. Entwining or twisting of the strands or filaments may be desirable to provide air passages, if the extruded material does not allow the drawing of air or smoke therealong. Other downstream processing techniques may also be used to improve pressure drop, if required, if extruded as a rod.
- Various extruded forms are described in our co-pending PCT application and should be taken to be incorporated herein by reference thereto.
- the smokable filler material may also comprise a burn additive to enhance the smoking properties of the filler material.
- the burn additive is either a burn promoter or a burn retardant.
- Suitable burn additives may be selected from one or more of salts of Group I or II metals such as acetates, citrates and other burn promoters known to the skilled man.
- Suitable burn retardants include magnesium hydroxide, mono-ammonium phosphate or magnesium chloride, for example.
- the smokable filler material may also comprise an ash improver, which is advantageously present in the filler in the range of 0-5%.
- ash improvers include one or more of mica, perlite, clays, such as, for example, vermiculite, kaolinites, talcs, saponites, bentonites, as well as ash improvers such as disodium hydrogen orthophosphate, sodium carbonate or diammonium phosphate, for example.
- the present invention also provides a smoking article comprising a rod of smokable filler material, according to an aspect of the present invention, wrapped in a wrapper.
- the smokable filler material may comprise 100% of the rod of material wrapped in a wrapper.
- the smokable filler material of the invention may be blended with cut tobacco or tobacco containing sheet, such as a reconstituted sheet, for example.
- the amount of tobacco material in such a blend is not more than 40% and is more preferably ⁇ 30% by weight of the final blend.
- the wrapper may suitably be a paper wrapper or a substantially non-combustible wrapper, such as that described in International Patent Application, Publication No. WO 96/07336.
- the subject matter of that application as it relates to the substantially non-combustible wrapper is incorporated herein by reference.
- the wrapper thereof advantageously contains at least 65% inorganic particulate filler material, such as those inorganic materials described above.
- a conventional cellulose pulp paper wrapper may have a permeability in the range 2-300 CU and preferably less than 100 CU. Such a wrapper may also be a low total filler paper such as disclosed in our European Patent Application No. 0 404 580 and comprising less than 14% magnesium oxide or hydroxide, for example.
- the fruit paste or fruit solution is added to the chalk slurry and mixed.
- the control of pH is of importance, since a low pH has been found to detrimentally effect the binding properties of sodium alginate or ammonium alginate binder, resulting in a poorer quality sheet material which after cutting is unable to run satisfactorily through a cigarette maker because of its reduced strength.
- the binder is added gradually to the mix, with more water if required.
- the final viscosity of the slurry should ideally lie between 150,000 and 250,000 centipoise.
- Cut material of each was then fabricated into cigarettes of 24.70 mm diameter, 64 mm length with a 20 mm cellulose acetate filter and a paper wrapper of 5CU with 0.55% potassium citrate burn additive added thereto.
- This cigarette construction enabled direct comparison to a control commercial cigarette, in this case, a King Size, full flavour, Virginia style cigarette.
- the mainstream smoke deliveries are given below in Table 1, along with the achieved reduction in deliveries compared to the control cigarette (see Table 2).
- TABLE 1 The influence of fruit type of mainstream smoke deliveries Fuel Dry TPM Water CO Nicotine NFDPM NHFDPM Cigarette weight Puff (mg/ (mg/ (mg/ (mg/ (mg/ Glycerol (mg/ Code (g) No.
- the table shows, in particular, a significant dilution in mainstream and sidestream smoke deliveries.
- a smoke low in nitrogen-derived compounds is obtained. Surprisingly, a low dry particulate matter content of smoke is also obtained. Despite high levels of non-combustible inorganic filler a substantial smoke aerosol is generated which comprises mainly glycerol and water.
- the final product also provides a product low in nitrogen and mean ammonia nitrogen (see Table 4).
- TABLE 4 Mean Total Nitrogen & Ammonia of Drumcast Sheet Materials Total Nitrogen Mean Ammonia Nitrogen Sample Description (% dwb) (% dwb) Tobacco SE555 2.00 0.016 Pineapple I 0.06 0.00 Tomato 0.30 0.00 Blackcurrant 0.04 0.00 Strawberry 0.02 0.00 Pineapple II 0.02 0.00 Apple 0.01 0.00 Banana 0.05 0.00 Rosemary 0.18 0.00 Mango 0.07 0.00 Pineapple III 0.02 0.00 Raisins 0.09 0.00 Extracted Raisins 0.02 0.00
- a dry mix is made up from chalk (50%), dried fruit or powdered fruit (20%), pregelatinised starch (20%) and hydroxypropyl cellulose (10%).
- the mix is then fed into an extruder and water and glycerol (3-5%) pumped into the extruder.
- the extruder barrel is heated at points along the barrel so as to produce temperatures at the heated extruder zones which are typically 70, 100, 110, 120 and 130 degrees Celsius.
- the pressure at the die is typically about 30 bar, and should in any case be less than 100 bar.
- the screw profile of the extruder should be such that enough energy is put into the mix to produce a blown extrudate when the material exits the extruder die.
- the extrudate formed is in the shape of a tube or a foamed sheet. Ideally the tube is produced with a very small diameter hole running longitudinally through the centre.
- the extrudate is carried away from the extruder die by a suitable haul-off system.
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- General Health & Medical Sciences (AREA)
- Health & Medical Sciences (AREA)
- Manufacture Of Tobacco Products (AREA)
- Cigarettes, Filters, And Manufacturing Of Filters (AREA)
- Reinforced Plastic Materials (AREA)
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- Solid Fuels And Fuel-Associated Substances (AREA)
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Abstract
Description
- This invention relates to a smokable filler materials, in particular but not exclusively, a smokable filler materials to be used in cigarettes.
- Filler materials that are suitable for use as tobacco substitute material have been proposed for many years. However, relatively little investigation into the use of material derived from fruit has been undertaken. Where fruit has been used, the fruit is usually a minor constituent added to provide sugar and amino acids or as a structure-former, see, for example, UK Patent Specification No. 1 412 878. Similarly, U.S. Pat. No. 4,083,371 utilises similar materials including husks together with fruit concentrate and optionally carob bean flour. In both specifications the main organic combustible material, i.e. the main fuel material, is selected waste products of cereals or nuts.
- This invention is able to provide a smokable filler material in which fruit material is the or one of the main combustible fuel materials of the smokable filler materials.
- The invention is also able to be used with or without additional tobacco material, whether cut tobacco leaf or cut reconstituted tobacco sheet material.
- Furthermore, the smokable filler material has a smoking quality that enables the product developer to select appropriate flavours and casings in order to provide an acceptable smoking taste and flavour.
- The smoke derived from smokable filler material according to the invention also provides significant reduction to the smoker of some smoke components.
- The present invention provides a smokable filler material comprising a non-combustible inorganic filler, a binder, and as a major organic combustible fuel material, a fruit material.
- Preferably the inorganic filler material is in the range of 30-90% by weight of the dry materials.
- Smokable filler material produced by means of casting advantageously comprises inorganic filler material in the range of 50-80%, and more preferably >60% and even more preferably >70% by weight of the dry materials.
- Alternatively, smokable filler material produced by means of an extrusion process preferably comprises inorganic filler material in the range of 30-70% by weight of the dry materials. More preferably the inorganic filler material is in the range of 35-60%, and is even more preferably in the range 45-55% and more preferably about 50% by weight of the dry materials.
- The binder is preferably in the range of 3-25% by weight of the dry materials. More preferably the binder is in the range of 5-15%, and is more preferably less then 12% or even more preferably less than 10% by weight of dry materials. The binder may advantageously be about 7.5% by weight of dry materials.
- The fruit material is preferably in the range of 2-50% by weight of the dry materials. For a smokable filler material made by a casting process the fruit material is more preferably in the range of 5-15% and is even more preferably 10% or more, and may advantageously be about 12.5%. For a smokable filler material made by the extrusion process, the fruit material is preferably in the range of 2-50% by weight of dry materials. More preferably the fruit material is in the range of 10-30% and is even more preferably about 20% by weight of the dry materials.
- The smokable filler material made by a casting process may advantageously comprise 10-20% fruit, 10% sodium alginate, 70% chalk and 10% glycerol. An acceptable filler material can be produced using 7.5% sodium alginate with a consequent increase in the fruit content.
- The smokable filler material made by an extrusion process may advantageously comprise 10-20% fruit, 20% starch, 50% chalk, 10% hydroxypropylcellulose and 0-10% glycerol.
- The non-combustible inorganic filler material is preferably an inorganic filler selected from the group comprising silicates or alumino-silicates, such as perlite, vermiculite, diatomaceous earth, talc or colloidal silica; or metal oxides, metal salts or hydroxides such as magnesium oxide, magnesium sulphate, calcium or magnesium carbonate or alumina. Advantageously the inorganic filler is a low density material, suitably of <5 g/cm3, preferably less than 4 g/cm3 and more preferably <3 g/cm3. Mixtures of these fillers are also acceptable.
- The smokable filler material may also comprise an organic filler. Advantageously the organic filler material is inert or relatively inert when alone, i.e. will not readily maintain burning, but in a mixture may become more combustible, i.e. will maintain burning. Suitable organic fillers include insoluble alginates, such as calcium or magnesium alginate, calcium pectinate or alginic acid, as well as non-modified cellulose, such as treated or non-treated wood pulp or alpha cellulose, for example. Mixtures of inert organic fillers and inorganic fillers may also be used.
- The organic filler is advantageously present in the range of 0-40%. The organic filler helps to improve the ash characteristics of the smokable filler material. It may be advantageous to include a combustible organic material with naturally low nitrogen content, i.e. less than 0.25%, more advantageously less than 0.20% and even more advantageously less than 0.1% dwb of total nitrogen.
- Advantageously the binder is an organic binder, 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 or sodium alginate.
- Much preferred binders are alginic binders which include soluble alginates such as ammonium alginate, sodium alginate, sodium calcium alginate, calcium ammonium alginate, potassium alginate, triethanol-amine alginate and propylene glycol alginate. Alginic binders provide the preferred smoking mechanics and taste and flavour properties for the smokable filler according to the invention.
- Cellulosic binders include, for example, cellulose derivatives, such as sodium carboxymethylcellulose, methyl cellulose, hydroxypropylcellulose, hydroxyethyl cellulose or cellulose ethers. These binders are preferred for extrusion purposes.
- Other organic 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. Pectins and pectinaceous materials can also be used as binders. 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). Inorganic non-combustible binders, such as some cements, for example, Portland cement, may also be used. Combinations of the above may also be used.
- If the binder is an alginate, and in particular the monovalent alginates, it is desirable in the processing stage to keep the pH of the slurry above 5 and below 3, i.e. in the range 3-5, in order to improve the binding properties of the alginate. This may be achieved by balancing the fruit and inorganic filler content, or by neutralising the slurry by the addition of an acidic material such as citric acid or basic material such as sodium carbonate, for example.
- The fruit material is suitably one or more of most derivatives from fruit, such as either whole fruit, dried fruit, fruit pulp, fruit concentrate, i.e. the fruit residue arising from the manufacture of fruit juices, fruit paste, fruit purée, a powdered extract of the fruit or a liquid extract of the fruit. If a liquid extract is used, the extract is preferably not purely sugars from the fruit. Mixtures of each class are also acceptable. Granulation of the fruit material by, for example, mixing a fruit liquid or syrup with the inorganic filler, drying and granulating is also advantageous for some fruit derivatives, in terms of ease of processing.
- Preferably the fruit selected has a low sugar content, i.e. of the order of 70% or less. It has been found to be advantageous for high sugar containing fruits to have sugar removed therefrom, so that-upon addition of the fruit material the sugar content is preferably less than 20%. Advantageously the fruit material is selected from the class comprising soft fruits, citrus fruit, berries or processed fruit material, such as dried powders or dietary fibre. Preferably the fruit material is selected to have a low nitrogen content, advantageously of <1.8% dwb and more advantageously of <1.0% dwb, and even more advantageously of <0.6% dwb. The fruit is suitably selected from one or more of the following: pineapple, mango, raisin, apple, banana, apricot, lemon, peach, kiwi or grape. The first three of this list are particularly preferred. Seeds from these materials are not, at this stage, considered to be of value in the present invention.
- Fruit powder or concentrate may each be mixed with water until fully dissolved. Pulp from fruit is suitably pulverised thereby becoming finely divided, yet allowing the fibres to remain relatively intact. Fibres may be separated from the liquid in order to change the ratio of fibres to liquid, if desired. If dried fruit is utilised, the fruit is preferably boiled in water. If high sugar fruits are utilised they are preferably boiled and percolated, for example, to remove a proportion of the organic acids and sugars, and then blended to produce a homogeneous mixture or paste.
- The aerosol generating source preferably comprises aerosol forming means, such as glycerol and/or other aerosol forming compounds illustrated in our co-pending PCT Application No. WO96/07336. These include polyhydric alcohols, propylene glycol and triethylene glycol, esters such as triethyl citrate, triacetin or triethylene glycol diacetate (TEGDA), or high boiling point hydrocarbons. Other suitable aerosol forming means will be known to those skilled in the art.
- Preferably aerosol generating means is incorporated into the filler material at a level of 0-30%. For a smokable filler material made by a drum cast process the aerosol generating means is more preferably in the range of 5-15%, and even more preferably about 10% by weight of the dry materials. For a smokable filler material made by an extrusion process the aerosol generating means is more preferably in the range 0-10% and even more preferably in the range 3-5% or less by weight of dry materials. The aerosol generating means is pumped into the barrel of the extruder. Plasticisers are also desirable. If the plasticiser is the same as one of the list of suitable aerosol forming materials, the plasticiser may suitably be present at a level such that it is not the main aerosol producer. Each of the additional components, i.e. those other than filler, fruit and binder, are selected according to the final material properties desired.
- Other taste and flavour materials, such as coffee, cocoa, caramel, flavours from roots, such as ginger or licorice, for example, tobacco dust or tobacco extracts may also be added to the smokable filler material at levels <10%, and preferably at levels of <5%, by weight of the dry materials.
- The smokable filler material is advantageously prepared by mixing all the powdered material (excluding the binder), adding water, then gradually introducing the binder whilst subjecting the mixture to high shear. Further. water is then added to achieve the desired viscosity.
- Preferably the final slurry has a viscosity between 60,000-400,000 centipoise and is more preferably in the range of 150,000-250,000 centipoise. The final viscosity will depend on the method of casting (drum or band), extrusion or paper making process to be used.
- The final slurry is then suitable for casting whereupon it may then be stored, conditioned, and then shredded to produce cut smokable filler material.
- The smokable filler material may alternatively be produced by means of extrusion, which extruded material may be a foamed or non-foamed material. Suitable expansion medium or foaming means are described in our co-pending PCT Application No. WO 96/07336, the subject matter thereof in relation to expansion mediums being incorporated herein by reference thereto. Suitable expansion mediums include starch, pullulan or other polysaccharides, including cellulose derivatives, solid foaming agents, inorganic salts and organic acids providing in situ gaseous agents, organic gaseous agents, inorganic gaseous agents and volatile liquid foaming agents. The expansion medium may partly replace the inorganic filler. The expansion medium may be present in the range of 0-40% by weight of the dry materials and preferably less than 30% and more preferably is about 20%. Water is most commonly the preferred volatile expansion agent for such expansion systems. Alternative expansion agents are well known. The smokable filler material is advantageously prepared by mixing all the powdered material including the binder, then pumping water and glycerol into the barrel of the extruder. The extruded material may be rods, strands, filaments or sheet material which is then cut to provide filler material. Entwining or twisting of the strands or filaments may be desirable to provide air passages, if the extruded material does not allow the drawing of air or smoke therealong. Other downstream processing techniques may also be used to improve pressure drop, if required, if extruded as a rod. Various extruded forms are described in our co-pending PCT application and should be taken to be incorporated herein by reference thereto.
- The smokable filler material may also comprise a burn additive to enhance the smoking properties of the filler material. Depending on the properties of the filler the burn additive is either a burn promoter or a burn retardant. Suitable burn additives may be selected from one or more of salts of Group I or II metals such as acetates, citrates and other burn promoters known to the skilled man. Suitable burn retardants include magnesium hydroxide, mono-ammonium phosphate or magnesium chloride, for example.
- The smokable filler material may also comprise an ash improver, which is advantageously present in the filler in the range of 0-5%. Appropriate ash improvers include one or more of mica, perlite, clays, such as, for example, vermiculite, kaolinites, talcs, saponites, bentonites, as well as ash improvers such as disodium hydrogen orthophosphate, sodium carbonate or diammonium phosphate, for example.
- The present invention also provides a smoking article comprising a rod of smokable filler material, according to an aspect of the present invention, wrapped in a wrapper.
- The smokable filler material may comprise 100% of the rod of material wrapped in a wrapper. Alternatively the smokable filler material of the invention may be blended with cut tobacco or tobacco containing sheet, such as a reconstituted sheet, for example. Preferably the amount of tobacco material in such a blend is not more than 40% and is more preferably <30% by weight of the final blend.
- The wrapper may suitably be a paper wrapper or a substantially non-combustible wrapper, such as that described in International Patent Application, Publication No. WO 96/07336. The subject matter of that application as it relates to the substantially non-combustible wrapper is incorporated herein by reference. The wrapper thereof advantageously contains at least 65% inorganic particulate filler material, such as those inorganic materials described above.
- A conventional cellulose pulp paper wrapper may have a permeability in the range 2-300 CU and preferably less than 100 CU. Such a wrapper may also be a low total filler paper such as disclosed in our European Patent Application No. 0 404 580 and comprising less than 14% magnesium oxide or hydroxide, for example.
- In order that the invention may be easily understood and readily carried into effect, reference will now be made to the following Examples.
- The general process is described below.
- Initially, water, glycerol and chalk are mixed thoroughly using a Silverson mixer until a homogeneous slurry. is produced. The fruit powder or concentrate is separately mixed with a small amount of water and stirred until fully dissolved. If dried fruits are used the fruit is boiled in tap water for 20-30 minutes, and blended in a food processor until a homogeneous paste is produced. Percolation to remove the organic acids and sugars may be desirable, depending on the sugar content of the fruits.
- The fruit paste or fruit solution is added to the chalk slurry and mixed. Depending on the alginate binder used the control of pH is of importance, since a low pH has been found to detrimentally effect the binding properties of sodium alginate or ammonium alginate binder, resulting in a poorer quality sheet material which after cutting is unable to run satisfactorily through a cigarette maker because of its reduced strength.
- Finally, the binder is added gradually to the mix, with more water if required. The final viscosity of the slurry should ideally lie between 150,000 and 250,000 centipoise.
- The slurries in the following Examples were cast on a drum caster to produce a uniform sheet. The resulting sheet is stored at approximately 60% RH for 24 hours prior to shredding using a Hauni tobacco shredder or a paper-type shredder. After the strands have been conditioned for 48 hours the material is ready to be made into cigarettes on a cigarette maker.
- As representative samples three classes of fruit were used to produce smokable filler material. Pineapple concentrate (75° BRIX) obtained from HAX Limited, London, powdered mango extract obtained from Key Ingredients Limited, Cheltenham and raisins (whole fruit) from Tesco Supermarket were each separately appropriately processed into cast sheet material and cut. The proportions of each of the materials are: 7.5% fruit material, 12.5% sodium alginate binder, 70% coarse chalk inorganic filler and 10% glycerol aerosol former.
- Cut material of each was then fabricated into cigarettes of 24.70 mm diameter, 64 mm length with a 20 mm cellulose acetate filter and a paper wrapper of 5CU with 0.55% potassium citrate burn additive added thereto. This cigarette construction enabled direct comparison to a control commercial cigarette, in this case, a King Size, full flavour, Virginia style cigarette.
- The cigarettes were smoked under standard machine smoking conditions of 35 ml puff of 2 second duration per minute. A statistically relevant number of cigarettes were smoked (see Proctor, C. et al. The Analyst, October 1988, v. 113 p1509-1513). In this instance, 5 cigarettes per pad on a port and a mean of 4 ports was taken.
- The mainstream smoke deliveries are given below in Table 1, along with the achieved reduction in deliveries compared to the control cigarette (see Table 2).
TABLE 1 The influence of fruit type of mainstream smoke deliveries Fuel Dry TPM Water CO Nicotine NFDPM NHFDPM Cigarette weight Puff (mg/ (mg/ (mg/ (mg/ (mg/ Glycerol (mg/ Code (g) No. Cig) Cig) cig) cig) cig) (mg/cig) cig) Pineapple 11.1 5.7 11.23 4.74 4.40 — 6.49 5.89 0.6 Mango 1.17 6.3 10.42 3.96 5.40 — 6.47 6.35 0.12 Raisins 1.21 6.3 9.83 3.03 4.80 — 6.80 5.75 1.05 Control 0.78 08.0 21.63 4.81 15.00 1.42 15.40 — 15.40 -
TABLE 2 Achieved reductions (%) Dilution Cigarette % Reduction in (W + G/TPM) Code TPM Water NFDPM CO NHFDPM (%) Pineapple 48 1 61 71 97 95 Mango 52 18 62 64 99 99 Raisins 55 37 60 68 89 89 238 — — — — — 22 SE555 - Other experimental mixtures produced included the following samples.
TABLE 3 Sodium Fuel Alginate Glycerol Chalk (%) (%) (%) (%) Spray dried tomato 20 7.5 10 62.5 Vacuum dried blackcurrant 20 7.5 10 62.5 Vacuum dried pineapple (I) 20 7.5 10 62.5 Pineapple concentrate 75° Brix 20 7.5 10 62.5 (II) Apple concentrate 75° Brix 20 7.5 10 62.5 Strawberry concentrate 75° C. 20 7.5 10 62.5 Brix Banana concentrate 68° C. Brix 20 7.5 10 62.5 Rosemary Dry Powder 20 7.5 10 62.5 Pineapple concentrate 75° 7.5 12.5 10 70 Brix (III) Vacuum dried mango 7.5 12.5 10 70 Dry Raisins 7.5 12.5 10 70 - As can be seen from all of the examples, there are quite significant smoke delivery advantages using smokable filler material according to the invention.
- The table shows, in particular, a significant dilution in mainstream and sidestream smoke deliveries.
- Furthermore, the material also performs well in a conventional cigarette manufacturing situation, thereby not requiring modification of existing apparatus.
- A smoke low in nitrogen-derived compounds is obtained. Surprisingly, a low dry particulate matter content of smoke is also obtained. Despite high levels of non-combustible inorganic filler a substantial smoke aerosol is generated which comprises mainly glycerol and water.
- The final product also provides a product low in nitrogen and mean ammonia nitrogen (see Table 4).
TABLE 4 Mean Total Nitrogen & Ammonia of Drumcast Sheet Materials Total Nitrogen Mean Ammonia Nitrogen Sample Description (% dwb) (% dwb) Tobacco SE555 2.00 0.016 Pineapple I 0.06 0.00 Tomato 0.30 0.00 Blackcurrant 0.04 0.00 Strawberry 0.02 0.00 Pineapple II 0.02 0.00 Apple 0.01 0.00 Banana 0.05 0.00 Rosemary 0.18 0.00 Mango 0.07 0.00 Pineapple III 0.02 0.00 Raisins 0.09 0.00 Extracted Raisins 0.02 0.00 - The general process for extrusion is described below. A dry mix is made up from chalk (50%), dried fruit or powdered fruit (20%), pregelatinised starch (20%) and hydroxypropyl cellulose (10%). The mix is then fed into an extruder and water and glycerol (3-5%) pumped into the extruder. The extruder barrel is heated at points along the barrel so as to produce temperatures at the heated extruder zones which are typically 70, 100, 110, 120 and 130 degrees Celsius. The pressure at the die is typically about 30 bar, and should in any case be less than 100 bar. The screw profile of the extruder should be such that enough energy is put into the mix to produce a blown extrudate when the material exits the extruder die. The extrudate formed is in the shape of a tube or a foamed sheet. Ideally the tube is produced with a very small diameter hole running longitudinally through the centre.
- The extrudate is carried away from the extruder die by a suitable haul-off system.
Claims (49)
Applications Claiming Priority (3)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
GBGB0014465.9A GB0014465D0 (en) | 2000-06-14 | 2000-06-14 | Improvements relating to smokable filler material |
GB0014465.9 | 2000-06-14 | ||
PCT/GB2001/002563 WO2001095748A1 (en) | 2000-06-14 | 2001-06-11 | Smokable filler material containing a fruit material |
Publications (1)
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US20040074508A1 true US20040074508A1 (en) | 2004-04-22 |
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Family Applications (1)
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US10/297,822 Abandoned US20040074508A1 (en) | 2000-06-14 | 2001-06-11 | Smokable filler material containing a fruit material |
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US (1) | US20040074508A1 (en) |
EP (1) | EP1294242B1 (en) |
JP (1) | JP3742793B2 (en) |
KR (1) | KR20030010709A (en) |
CN (1) | CN1436050A (en) |
AT (1) | ATE338474T1 (en) |
AU (2) | AU6407601A (en) |
BR (1) | BR0112175A (en) |
CA (1) | CA2410656A1 (en) |
CZ (1) | CZ20024031A3 (en) |
DE (1) | DE60122883T2 (en) |
GB (1) | GB0014465D0 (en) |
HU (1) | HUP0302483A3 (en) |
IL (1) | IL153429A0 (en) |
MX (1) | MXPA02012332A (en) |
NZ (1) | NZ522795A (en) |
RU (1) | RU2256386C2 (en) |
UA (1) | UA74378C2 (en) |
WO (1) | WO2001095748A1 (en) |
ZA (1) | ZA200209416B (en) |
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AU2001264076B2 (en) | 2004-06-03 |
CZ20024031A3 (en) | 2004-01-14 |
MXPA02012332A (en) | 2003-06-06 |
EP1294242A1 (en) | 2003-03-26 |
HUP0302483A2 (en) | 2003-11-28 |
IL153429A0 (en) | 2003-07-06 |
JP3742793B2 (en) | 2006-02-08 |
CA2410656A1 (en) | 2001-12-20 |
BR0112175A (en) | 2003-05-20 |
CN1436050A (en) | 2003-08-13 |
DE60122883T2 (en) | 2007-01-04 |
RU2256386C2 (en) | 2005-07-20 |
JP2004503230A (en) | 2004-02-05 |
WO2001095748A1 (en) | 2001-12-20 |
UA74378C2 (en) | 2005-12-15 |
ATE338474T1 (en) | 2006-09-15 |
EP1294242B1 (en) | 2006-09-06 |
GB0014465D0 (en) | 2000-08-09 |
HUP0302483A3 (en) | 2006-03-28 |
ZA200209416B (en) | 2004-02-19 |
NZ522795A (en) | 2004-07-30 |
DE60122883D1 (en) | 2006-10-19 |
KR20030010709A (en) | 2003-02-05 |
WO2001095748B1 (en) | 2002-01-17 |
AU6407601A (en) | 2001-12-24 |
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Owner name: BROWN & WILLIAMS TOBACCO CORPORATION, KENTUCKY Free format text: ASSIGNMENT OF ASSIGNORS INTEREST;ASSIGNORS:ZAMARRO, MARTA GOMEZ;MCADAM, KEVIN GERARD;GILBERT, RICHARD THOMAS;REEL/FRAME:015164/0164;SIGNING DATES FROM 20021004 TO 20021112 |
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Owner name: BROWN & WILLIAMSON U.S.A., INC., KENTUCKY Free format text: ASSIGNMENT OF ASSIGNORS INTEREST;ASSIGNOR:BROWN & WILLIAMSON TOBACCO CORPORATION;REEL/FRAME:015201/0628 Effective date: 20040730 |
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Owner name: R.J. REYNOLDS TOBACCO COMPANY, NORTH CAROLINA Free format text: MERGER;ASSIGNOR:BROWN & WILLIAMSON U.S.A., INC.;REEL/FRAME:016145/0684 Effective date: 20040730 |
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STCB | Information on status: application discontinuation |
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Owner name: JPMORGAN CHASE BANK, N.A., AS COLLATERAL AGENT,NEW Free format text: SECURITY INTEREST;ASSIGNOR:R.J. REYNOLDS TOBACCO COMPANY;REEL/FRAME:017906/0671 Effective date: 20060526 Owner name: JPMORGAN CHASE BANK, N.A., AS COLLATERAL AGENT, NE Free format text: SECURITY INTEREST;ASSIGNOR:R.J. REYNOLDS TOBACCO COMPANY;REEL/FRAME:017906/0671 Effective date: 20060526 |