JP2020520678A - Tobacco-containing consumables for aerosol generators - Google Patents

Abstract

Including at least one tobacco-derived portion, at least one distal filter portion, and at least one mouth end filter portion held together in a wrap; the compressibility factor of the finished article is <10% on the longitudinal axis. A non-combustible tobacco article for use with a heat source to produce an inhalable aerosol.

Description

Many alternatives to traditional flammable tobacco products have been launched in recent years.

The electronic cigarette uses a battery power source to heat a liquid that produces a nicotine-containing aerosol to form an inhalable nicotine-containing aerosol. Such products tend to be tobacco-free.

Heated tobacco products use a variety of energy sources and means to heat tobacco-containing consumables to produce an inhalable aerosol containing several components derived from tobacco, including flavor and nicotine.

There are also various "hybrid" products that can combine the technology of both electronic tobacco and heated tobacco products to produce an inhalable nicotine-containing aerosol, where the flavor and nicotine are the liquids that produce the aerosol. , Or the tobacco portion.

Examples of existing technology include:
WO 9639880 and WO 2013190036 describe a tobacco-derived material, typically a distal end, including a crimped reconstituted tobacco sheet, generally a mouthpiece end that includes multiple segments. A cigarette consumable article, such as a cigarette, comprising a filter and a paper wrapper is described. The article is intended to be electrically heated to produce an inhalable nicotine-containing aerosol.

WO2016207407 also describes tobacco consumables for consumption by heating, i.e. distal tobacco derived parts, mouth end filters, and paper wrappings.

U.S. Patent Application Publication No. 2009151717 describes a small metal capsule ("pod") with a foil lid that is pierced prior to use. Within the pod, tobacco-derived materials generally include finely divided tobacco particles, humectants and fragrances.

WO 20161599013 describes a device in which an aerosol is produced by heating a liquid, which is then passed through a separate tobacco part; the tobacco part is flavored and/or in the final aerosol. Or give nicotine. The tobacco portion may be retained in a molded plastic capsule with a mesh at the distal end and a mini-filter at the mouth end.

WO2016135342 describes a product that operates in a similar manner as described in WO20161599013 but includes the tobacco portion and the liquid heating unit as one unit. There is. The tobacco portion is retained within the molded plastic structure with the filter at the mouth end.

It has been recognized that there are some limitations regarding the consumable units for these products.

For example, with consumables manufactured using tobacco rod fabrication techniques, a user may inadvertently ignite the consumable and inhale unintended and/or unwanted combustion products. Also, consumables utilizing plastic or metal capsules require custom manufacturing machines, have limited environmental recyclability, and have high material and product costs.

The present invention is for use in an aerosol generating device, comprising at least a tobacco derived portion, a distal filter portion and a mouth end filter portion, held together in a continuous wrapping material and having a compressibility factor of less than 10%. A tobacco-containing consumable article for achieving the same will be described.

The total pressure drop of the article may be <120 mm water column along its longitudinal axis. The pressure drop is preferably in the range of 5-40 mm water column, and more preferably in the range of 10-30 mm water column.

Such consumables are well known within the tobacco industry and can be manufactured using conventional cavity filter making techniques, such as shown in US Pat. No. 6,537,186. In such prior art arrangements, the filter comprises a distal filter portion, generally a solid granular material, for example a cavity for receiving activated carbon, and a mouth end filter portion, all of which are paper wrappers. Held together by and manufactured. There are also products that use tobacco-derived materials in the cavities to flavor or damp the smoke as it passes through the filter.

Therefore, the present invention uses proven manufacturing technology to produce consumables with low material and production cost, material and design flexibility through readily available high speed production machines. It may be possible and compatible with various aerosol generating systems.

In some examples, the article may modify one or more other organoleptic properties of the aerosol (eg, modify the feel or odor or appearance of the aerosol to the user).

In some examples, the article may include a substance that modifies the PH of the aerosol by either lowering or raising the pH (eg, modifying the acidity or basicity of the aerosol).

In some examples, the article may modify (eg, reduce) the amount of aldehyde in the aerosol.

Non-combustible tobacco article, as described herein, means an article that includes a tobacco-derived portion that is not intended to be burned, in whole or in part, during use, and any portion of said article. , Not intended to be ignited during use. Further, the structure of the article resists ignition by using a filter material such as cellulose acetate at both the distal end and the mouth end.

The term aerosol is understood to include gases, vapors, droplets, condensates, particulates and combinations thereof. Inhalable aerosol means an aerosol having a mean particle size as measured by laser scattering of 0.1 to 10 μm, more preferably 0.1 to 1.5 μm.

Examples of the invention will now be described with reference to the accompanying drawings.

1 is a schematic side view of an article according to the present invention. 1 is a schematic side view of an article according to the invention, displaying the vertical axis. FIG. 4 is a side perspective view of an exemplary filter portion and wrapping material for use in the present invention, which uses multiple layers of wrapping material. FIG. 3 is a schematic side view of an exemplary article according to the present invention with different packaging configurations. FIG. 3 is a schematic side view of an exemplary article according to the present invention with different packaging configurations. FIG. 3 is a schematic side view of an exemplary article according to the present invention with different packaging configurations. FIG. 3 is a schematic view of an apparatus used in combination with the article of the present invention. FIG. 3 is a schematic view of an apparatus used in combination with the article of the present invention. 3 illustrates an exemplary filter portion that may be used in the articles of the present invention. FIG. 6 is a schematic diagram of an alternative method of using the articles of the present invention to generate steam.

FIG. 1 shows the basic structure of an article of the present invention. The mouth end 3 is the end of the article intended to be the outlet of the aerosol towards the user. Distal end 1 is the opposite end of the article, generally intended to be the entrance for air and other substances into the article. The tobacco parts are located between them. By way of example, the length of the tobacco part 2 is in the range of 7 mm to 17 mm, and preferably in the range of 10 mm to 13 mm, and the length of each of the filter parts 1, 3 is in the range of 3 mm to 15 mm, and It is preferably in the range of 4 mm to 6 mm, and the diameter of the flavor container is in the range of 5 mm to 8.5 mm. The dimensions provide adequate material within the tobacco portion 2 to provide the desired flavor effect while ensuring a balance across the three sections to ensure proper product retention while maintaining overall product strength and compressibility. Depends on the combination of needs to bring the pressure drop.

In the example of FIG. 1, part 2 is a tobacco-derived part, which is a single-grade tobacco, a blend of multiple tobacco grades, leaves, stems, dust, re-formed tobacco, washed. ) Tobacco, extracted tobacco, treated tobacco, tobacco extracts, and mixtures thereof. Tobacco-derived portion 2 can be produced from tobacco plants by methods that include harvesting, drying, cutting, crushing, grinding, extracting, regenerating, extruding, and combinations thereof. Tobacco-derived portion 2 may be present in leaves, petioles, dust, regenerated sheets, pleated, folded, shaped, beaded, granular physical forms, and mixtures thereof. In most cases, tobacco portion 2 comprises tobacco, but other plant ingredients or fragrances may also be used. In a variant of the example shown, the tobacco part 2 may be occupied by cut tobacco rods or by wholly or partly comminuted tobacco. The choice of material for the tobacco portion 2 will depend on a number of factors, including the conditions to meet the desired level of flavor delivery and the appropriate pressure drop.

In a preferred embodiment of the present invention, the tobacco-derived portion 2 is carefully selected from a mixture of multiple dry tobacco grades based on desired flavor characteristics and low levels of unwanted chemicals; Reducing to a size suitable for further processing by cutting or grinding; treating tobacco material to further reduce undesirable constituents by a suitable combination of processes including liquid extraction, heat treatment, pressure treatment, and chemical treatment Adding ingredients including moisturizers to produce aerosols and flavourants; regenerating tobacco into sheet format; intact as pleated sheets or of cut or crushed sheets Obtained by drying to produce a stable material that is added to the tobacco article, either as a piece. Although the above steps can be interchanged, size reduction is best formed early in the process, and extraction is preferred prior to flavor addition to minimize loss of added flavor. Drying is usually the final step, but flavor/humectants can be added last.

In some examples, tobacco cuts are used in the tobacco portion 2, where the density of the tobacco cuts is in the range of 150-500 mg/cm3, preferably 180-280 mg/cm3, and most preferably. May be in the range of 200-250 mg/cm3. This size control ensures that the maximum possible amount of tobacco is provided within the volume of tobacco portion 2 for maximum transfer into the aerosol.

In some examples, the tobacco portion 2 comprises a flavor material that has been ground or otherwise treated or formed into particles, eg, powders, granules, coarses, fibers, beads, pellets, or the like. , For example, to increase the active surface area or amount of flavor material to maximize the amount of flavor imparted to the vapor and/or aerosol stream flowing through the article.

As used herein, the terms "flavor" and "flavor promoting ingredient" may refer to materials that, if allowed by local regulations, may be used to produce a desired flavor or aroma in a product for adult consumers. They are extracts (eg licorice, hydrangea, magnolia leaf, chamomile, fenugreek, clove, menthol, mint, aniseed, cinnamon, herbs, wintergreen, cherries, berries, peaches, apples, drambui ( Drambuie), bourbon, scotch, whiskey, spearmint, peppermint, lavender, cardamom, celery, cascarilla, nutmeg, sandalwood, bergamot, geranium, honey essence, rose oil, vanilla, lemon oil, orange oil, cassia. , Caraway, cognac, jasmine, ylang-ylang, sage, fennel, pepper, ginger, anise, coriander, coffee, or peppermint oil from any of the plants of genus Mentha), flavor enhancer, Bitter taste receptor site inhibitors, sensory receptor site activators or stimulants, sugars and/or sugar substitutes (eg, sucralose, acesulfame potassium, aspartame, saccharin, cyclamate, lactose, sucrose, glucose, fructose, sorbitol, or Mannitol), and other additives such as charcoal, chlorophyll, minerals, botanical ingredients, or breath fresheners. These may be imitation, synthetic or natural ingredients, or blends thereof. These can be in any suitable form, for example oils, liquids, solids or powders. For example, a liquid, oil, or other such fluid flavor enhancing component may impregnate the porous solid material to impart flavor and/or other properties to the porous solid material. As such, liquids or oils are components of the impregnated material.

In order to prevent excessive pressure drop, it is possible to have the main or major axis of the tobacco-derived sheet extending parallel to the longitudinal axis 6 of the article of the present invention to form a path for the passage of air. Preferred (see Figure 2, part 2). In an alternative preferred embodiment of the present invention, the tobacco-derived material is as described above, except that the tobacco-derived material is reconstituted into a granular or granular format, which is then added to the present invention. Be prepared. Preferably, the granular or granular tobacco-derived material is produced by extrusion. This is to ensure consistency of particle size and shape, and to ensure even distribution of any added flavor enhancing ingredients or humectants.

In the special case of tobacco part 2 material comprising continuous fiber ground tobacco, the tobacco weight is preferably in the range of 2 mg to 6 mg per mm of tobacco part.

In the special case of tobacco part 2 material comprising short cut fiber crushed tobacco, the tobacco weight is preferably in the range of 6 mg to 15 mg per mm of tobacco part 2.

FIG. 2 shows the longitudinal axis 6 of the article of the invention, which is considered the main axis of the article and extends from the mouthpiece end 3 to the distal end 1. The other axis is taken perpendicular to this vertical axis. The definition of such axes is important for the measurement of key physical parameters that control the integrity of the product during storage and use, and of the sensory experience experienced by the user.

"Pressure drop" or "draw resistance" is using Coresta recommended method 41 (https://www.coresta.org/sites/default/files/technical_documents/main/CRM_41-update2).0. Measured and expressed as a few millimeters of water column equivalent. This design feature determines how the user can with reasonable effort extract a quantity of aerosol from the consumable/device.

"Compressibility" is measured on the vertical axis 6 by applying a fixing force of 10 Newtons at point 5 (see Fig. 2), and the deflection distance is measured as a percentage of the total length of the product. Such measurements may be performed using equipment such as the Instron electromechanical rig 3300.

In FIG. 1, the part 4 represents the “wrapping material”: one or more sheets of material providing the outer surface of the article are separated by separate elements (distal end filter 1, tobacco-derived part 2 and mouth end filter 3). ) In turn relative to one another and provide the article with a structural strength sufficient for the necessary manipulation by the user, especially during insertion into and removal from the associated device. The wrapping material 4 generally comprises paper, plastic, foil, laminate, or combinations thereof. The wrapping 4 may include a single layer throughout the article, or multiple layers at different points, as may be required depending on the substructure of the article, as shown by portions 8 and 9 in FIG. , For example, the multi-segment filter portion is generally held together with the outer wrapper to assist the manufacturing process. Packaging material particularly relevant to the present invention preferably has a basis weight in the range of 20 to 100 grams per square meter (gsm). A preferred embodiment utilizes a rigid, non-porous wrapping material in the range of 40-200 g/m2 composed of chalk-free, transparent cellulose-based paper overprinted with metallic ink. The lower limit of basis weight is usually determined by the opacity and physical strength required for the final consumable. The upper limit of the basis weight range is set by the operability of the machine that can be performed when the packaging material is too thick. For the preferred embodiment, the use of rigid non-porous packaging material without chalk is advantageous in that it can be printed in certain areas to provide shaped windows, logos, etc.

In some examples, the wrapping material 4 is configured to act as a liquid-resistant barrier such that liquids, eg, dew condensation that forms around the article when in use, penetrates the interior of the article and the tobacco portion. Prevent submersion of 2. In one example, a liquid resistant wrapper layer is used for the wrapper 4, which comprises a barrier material or Natureflex impregnated paper, or other suitable polymer film.

In a preferred embodiment of the invention, the wrapping material 4 is supplied as a continuous roll of material, which is laterally bent, molded into a continuous cylinder and, using adhesive, to itself. It is attached. Simultaneously with the formation of this continuous packaging cylinder, the internal elements, namely the filter parts 1, 3 and the tobacco-derived part 2, are suitably fed to and attached to the packaging material 4. This continuous cylinder is then cut into individual tobacco articles. This process can be carried out continuously using a machine for producing cavity filters, as is known in the art. In an alternative preferred embodiment, a continuous roll of wrapping material is formed into a helix and attached to itself to form a continuous cylindrical shape with the resulting spiral seams (as shown in FIG. 4). To do. The spiral arrangement has the additional advantage that the seam may provide additional structural rigidity to the finished article by preventing lateral compression.

4, 5 and 6 show an exemplary embodiment in which region 11 is transparent and region 12 is opaque. Transparent packaging is defined by the user's ability to visually perceive the contents within the article. Suitable properties can be found in transparent, semi-opaque, and translucent materials. Therefore, the transparent area may be packaged by changing the composition of the wrapping material 4 in the area by including a reduction of the printing amount, a reduction of the amount of the opaque layer, a removal of the foil layer or a combination thereof. It can be produced in the material 4. The preferred embodiment utilizes a transparent cellulosic-based paper opaque with a metallic ink that gives it a foil-like appearance overall, and the function of the transparent window 11 to view the contents within the article. It has areas that are free of metallic ink. Most preferably, these transparent windows 11 are aligned with the tobacco-derived portion 2.

During storage and use, the physical properties of the packaging 4 can be influenced by the absorption of volatile liquid and aerosol constituents. For example, paper-based wrapping materials may absorb moisture and other liquids, thereby softening the wrapping material and reducing its structural integrity; this may result in a user removing the article from the associated device. This can be undesirable as it can affect performance. This can also have a detrimental effect on the aesthetics of the packaging material, eg causing dirt. Therefore, it is desirable to provide a packaging material that resists absorption and therefore retains the desired structural properties and appearance. To be resistant to absorption, the wrapping material may be composed of plastic and foil; it may have a plastic or foil inner layer; it may have an inner surface coated with varnish or lacquer; it has a tendency to absorb liquids. It can be composed of low paper and can be a combination of these. These may include trilaminate foils of PE:Al:PET type structure. In a preferred embodiment, the wrapping material is a chalk-free, transparent cellulose-based paper with a low absorption tendency. In an alternative preferred embodiment, the wrapper 4 is a transparent film of plastic. In an alternative preferred embodiment, the packaging material 4 is a paper-based material whose inner surface is coated with a layer of alkylketene dimer (AKD).

The filter portion (FIG. 1, portions 1 and 3) contains the tobacco-derived portion 2 and allows the desired air and aerosols to pass while preserving the overall structural integrity of the tobacco article primarily in the minor axis direction. Serves as a physical barrier to maintain. In some examples, the filter material is moisture proof, so that the filter portions 1, 3 retain their shape during use. Further, the mouth end filter portion 3 may serve to prevent unwanted fine dust particles from the tobacco-derived portion 2 from reaching the user and to remove aerosol particles larger than those of the inhalable aerosol. ..

The filter parts 1, 3 can each be provided by a filter part 21. To enhance the air flow through the present invention, the pressure drop across the filter portion 21 (shown in FIG. 9) can be reduced by the introduction of one or more air flow channels 22 along the longitudinal axis. The airflow channel 22 may pass the entire length of the filter section. Preferably, the airflow channels 22 can pass up to 95% of the length of the filter portion, leaving at least 5% of the filter portion intact to retain tobacco particles. The airflow channel 22 can be introduced once, by forming the filter portion 21 by using a laser that burns the filter material or by using a mechanical pin that pierces the channel 22. Preferably, the airflow channels 22 are formed by introducing mandrels or pins into the filter material during the molding process for molding the channels.

In some examples, the pressure differential across any of the sections 1, 3 is in the range of 0.1 mm to 2 mm of water per mm length of the section.

The filter portion 21 is generally composed of cellulose acetate, paper, plastics, polymers such as polyethylene, polypropylene, or polylactic acid, and combinations thereof. In a preferred embodiment of the invention, the filter portion 21 is composed of cellulose acetate fibers plasticized with up to 15% triacetin. The filter portion 21 may be homogenized or composed of a plurality of continuous segments. The filter portion 21, and more preferably the mouth end filter portion 3, may include diluents, flavor enhancing ingredients, and aesthetics.

Different additional flavor components may be placed in each of the end filter portions 1, 3 (eg, the flavor capsules in the distal portion 1 and the flavored filamentous or linear in the mouthpiece portion 1).

In some examples, the filter portions 1, 3 include a fibrous material, and may be, for example, fibrous materials commonly used as filter materials in traditional tobacco, examples of which are cellulose acetate fibers, polypropylene fibers. , Polyester fibers, and paper, including fluted paper. Other materials may be used, such as nylon.

In another example, the material of the tobacco part 2 and the material of the two filter parts 1, 3 are made up of a large number of randomly oriented short cut CA fibers (eg using the so-called Turmalin device). Cut fibers). When short chopped CA fibers are used in the tobacco portion 2, for example with crushed tobacco, just enough fiber may be used to hold the crushed tobacco in rod form. The benefit of this arrangement is that it allows a lower pressure drop of the vapor and/or aerosol flow, and further, to retain the rod morphology, such as is required for continuous fiber CA, plasticizers such as , Reduce or eliminate the need for triacetin. Furthermore, the use of short cut CA fibers allows less CA and more tobacco use than when using continuous long CA fibers.

In some examples, the weight percentage of the first flavor component (and any other components such as charcoal, plasticizer) of the filter portions 1, 3 relative to the weight of the tobacco portion 2 material is 10%. To 90%, and preferably 70% to 90%.

In the special case of an article comprising continuous fibers and a tobacco part 2 comprising comminuted tobacco, the tobacco weight relative to the fiber weight is preferably in the range of 40% to 60%, and most preferably 45% to 55%. Within the range of. The fiber weight is preferably in the range 75% to 95%, and most preferably in the range 80% to 90%.

Diluents remove unwanted chemicals from aerosols, as well as carbon, activated carbon, pyrolytically produced carbon resins, silica, chemically activated derivatives of carbon and silica, metal-based catalysts, and the like. Solid particles of a mixture of.

The flavor enhancing component adds desirable sensory properties to the aerosol and may be present in tobacco derived parts, filter parts, and combinations thereof. Common flavor promoting ingredients include menthol, mint, peppermint, vanilla, licorice, fruit extracts, esters, acetals, fructals, and combinations thereof. The flavor-enhancing ingredient is encapsulated in a filter matrix, tobacco-derived material, flavor thread, beads, fragile capsule, fragile capsule, protective matrix, and cyclodextrin-containing molecule. , And combinations thereof.

Aesthetic elements include colorant dispersed within the filter matrix or localized in the filter and specific areas shaped to form different patterns, logos, or are recessed or grooved. Or a combination thereof. This is shown in FIG. 3, which shows an exemplary filter component that provides a mouth end with a concave portion 10. Together with the component 7, a mouthpiece filter portion 3 may be provided with a recess 10 for use in an article. This structure provides an aesthetically pleasing structure that can contribute to the strength of the product by using the layered wrapping material 4. It also allows the provision of shorter filter components 7, which can reduce the total pressure drop. In such an example, the filter portion 7 would typically be 6 mm or longer in length to ensure retention of material on the tobacco portion 2 while still providing adequate structural integrity while providing the article. Controls overall pressure drop and compressibility.

7 and 8 illustrate the use of the invention with an electronic cigarette as an aerosol generator. The device uses the battery power source 14 to heat the resistive element 17 to volatilize the electronic cigarette liquid (e-liquid) from the reservoir 16, which liquid is generally free of nicotine. The article 19 of the present invention is inserted into the electronic cigarette device at point 18. The first aerosol produced by the resistive element 17 is modified to pass through the article 19 and produce an inhalable aerosol 20. Modifications to the first aerosol include the addition of nicotine and other flavor enhancing ingredients from the present invention. Modification may also include removal of unwanted chemical constituents via diluents, and removal of unwanted aerosols and other particles from the aerosol.

In an alternative embodiment, the first aerosol further contains a chemical to assist in incorporating the desired chemical from the tobacco-derived portion 2 into the aerosol. Preferably, the first aerosol contains a volatile acid, which serves to incorporate the free base nicotine from the tobacco-derived portion 2 and thereby increase the amount of nicotine in the inhaled aerosol. Suitable volatile acids include ascorbic acid, pyruvic acid, and levulinic acid.

FIG. 10 shows an alternative use of the invention, in which the invention is inserted in a device with a power supply 14 which uses a heat source 23 to directly heat the tobacco part 2. The action of heat from the associated device releases volatile components from the invention, which form an inhalable aerosol. The heat source 23 includes one of heating means driven electrically or by a chemical reaction. Motorized options include metal heating elements, resistive elements, thin film heaters, ceramic heaters, and combinations thereof in conjunction with batteries or batteries. Alternatively, the electric heat source 23 may rely on induction, where an alternating electromagnetic field occurs, which likewise produces heat in a suitably arranged susceptor element 24. The efficiency of induction is improved when the susceptor element 24 is in close proximity to the material to be heated, so that the susceptor element 24 is within the tobacco-derived material or part of the packaging material that contacts the tobacco-derived portion. As best placed. In the case of induction heating, the power supply and circuitry can be configured to operate at high frequencies. Preferably, the power supply and circuitry may be configured to operate at a frequency of about 80 kHz to 500 kHz, preferably about 150 kHz to 250 kHz, more preferably about 200 kHz, and the assembly is in use at about 0.5 Tesla ( T)-may be arranged to operate in a varying electromagnetic field with a magnetic flux density of about 2.0T at the point of highest density. In general, the induction coil may comprise a Litz wire or a Litz cable, although the induction coil may comprise any suitable material. The susceptor may include, but is not limited to, one or more of aluminum, iron, nickel, stainless steel, and alloys thereof, such as nickel chrome. When applying an electromagnetic field in its vicinity, the susceptor can generate heat due to eddy currents and magnetic hysteresis losses, resulting in a conversion of energy from electromagnetic to heat.

Heat sources driven by chemical reactions include combustion, oxidation, redox, and other exothermic reactions.

Humectants are additives that act to retain water within the matrix and include polyols such as propylene glycol, glycerol, PEGs of various molecular weights, sugar alcohols such as sorbitol, and combinations thereof. Within the present invention, the volatilized humectant also serves to produce aerosol droplets. Preferably, the humectant is a mixture of propylene glycol and glycerol.

pH adjusters include acids, bases, and buffers that can be used to alter the ionization state of chemicals within tobacco-derived moieties, thereby modifying their volatility. In particular, the free base nicotine, which predominates at alkaline pH, is significantly more volatile than the nicotine salt, which predominates at acidic pH. In a preferred embodiment, sufficient basic drug is added to the tobacco-derived portion to achieve an overall pH>7, making more nicotine available for volatilization into an inhalable aerosol. More preferably, the overall pH is >8. Suitable basic agents include metal carbonates, hydrogen carbonates, metal hydroxides, and ammonium salts.

In one embodiment of the invention, the tobacco-derived portion 2 has a chemical composition according to the Gothiatek® standard, namely a tobacco-specific nitrosamine (NNN+NNK) content <1 mg/kg and a benzo[a]pyrene content <1.25 ug/ Produced by providing a blend of multiple tobacco grades, including iron tube dried tobacco and air dried tobacco, in kg. Once blended, the tobacco was first crushed and then crushed to produce No. Size is reduced by passing 18 Mesh to give a particle size <1 mm. To the comminuted tobacco was added 50% equivalent weight of deionized water; 2% equivalent weight of a flavor enhancing ingredient-a 50:50 mixture of menthol and peppermint oil; 0.375% equivalent weight of a pH adjuster-sodium hydroxide. To be done. The resulting tobacco paste is passed through a Coperion extruder connected to a pelletizer at a barrel temperature of 250° C. and a pressure of 4 atm to yield a shaped material having a particle size of about 1.5 mm. The tobacco-derived particles are then dried under vacuum to <10% moisture. The dried tobacco particles are then sieved to produce pieces within the range of 0.2 mm to 1.25 mm. The mouth end and distal end filter portions 1, 3 are manufactured using a Hauni filter rod maker. Filter parts 1, 3 are made from cellulose acetate tow 6Y17, using 10.1 mg tow per mm filter length; plasticized with 12 wt/wt% triacetin; 26 gsm, 2000 CU plug The wrap is attached with PVA adhesive. The dimensions of the final filter part are 8 mm in diameter and 6 mm in length. The assembly of non-combustible tobacco articles is carried out on a Molins cavity filter machine using a paper wrapping PPW35 with SWM having a 0.1% coating of AKD on the inner surface. The structure of the article is a 6 mm filter section, a 17 mm cavity with 250 mg of tobacco-derived material, the 6 mm filter section being attached with PVA adhesive. This produces a final article with a total pressure drop of 40-65 mm water column and a compressibility factor of about 3% on the vertical axis.

By controlling the compressibility of the article, the present invention provides a steam generator that is easy for the user to handle and that without the risk of deformation or damage, the production of steam during use may reduce the mechanical properties of the article. It is possible to provide a device that can be easily removed from the device. By optionally controlling the draw pressure, it is possible to ensure a pressure drop such that the user comfortably develops the draw pressure when receiving steam. Furthermore, the present invention ensures that articles holding suitable vapor generating materials can be provided in articles that are aesthetically pleasing and simple and easy to manufacture.

Claims (16)

A non-combustible tobacco article for use with a heat source to produce an inhalable aerosol; at least one tobacco-derived portion, at least one distal filter portion, and at least one held together in a packaging material. Non-combustible tobacco article, comprising two mouth end filter sections; the compressibility factor of the finished article is <10% on the vertical axis. A tobacco article according to claim 1, arranged in a longitudinal direction such that the total pressure drop across the tobacco article is <120 mm water column. A tobacco article according to claim 1 or 2 arranged in use to modify a first aerosol produced by the heat source to produce the inhalable aerosol. A tobacco article according to claim 1 or 2 arranged to provide a volatile component to the inhalable aerosol upon application of the heat source during use. 5. The method of any one of claims 1-4, further comprising an inductive element dispersed within the tobacco-derived portion so that, in use, electromagnetic energy is applied to the inductive element to generate heat. Tobacco articles. The tobacco article according to any one of claims 1 to 5, wherein the tobacco-derived portion contains at least one selected from the group consisting of a flavor promoting component, a humectant, and a pH adjusting agent. The tobacco article according to any one of claims 1 to 6, wherein the tobacco-derived portion contains a flavor promoting component, a moisturizing agent, and a pH adjusting agent. 8. A tobacco article according to any one of claims 1-7, wherein the wrapping material comprises at least one transparent region. The packaging is arranged to resist the absorption of volatile and aerosol components within the tobacco-derived portion so that the total weight gain due to absorption after use is <10% of the original packaging weight. A tobacco article according to any one of claims 1-8. The tobacco article according to any one of claims 1 to 9, wherein the packaging material is wound in a spiral direction with respect to the vertical axis of the article. 11. The tobacco article of any one of claims 1-10, wherein the mouth end filter portion includes at least two different abutted regions. 12. Any of claims 1-11, wherein the mouth end filter portion and the distal end filter portion include at least one selected from the group consisting of aesthetic elements, flavor enhancing components, and diluents, either separately or in combination. 2. The tobacco article according to item 1. 13. The tobacco article of any one of claims 1-12, wherein the mouth end filter portion and the distal end filter portion include a flavor enhancing component and an aesthetic element, either separately or in combination. 14. The tobacco article of any one of claims 1-13, wherein the mouth end filter portion and the distal end filter portion include a diluent, a flavor enhancing component, and an aesthetic component, either separately or in combination. 15. The tobacco article of any one of claims 1-14, wherein at least one of the filter portions includes at least one airflow channel in the longitudinal axis. First forming the filter portions and placing the filter portions within a wrapping material to form cavities between the filter portions; filling the cavities with the tobacco-derived material and the packaging 16. A process for making a tobacco article according to any one of claims 1-15, including the step of closing the material to form an integral unit.

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