METHOD FOR MANUFACTURING A BURNING-FREE HEATING CONSUMABLE IN THE SHAPE OF A SACHET

Abstract

The present invention relates to a method for manufacturing a non-burning, sachet-shaped heating consumable. Summary figure: Figure 1

Description

Description Title of the invention: METHOD FOR MANUFACTURING A HEATING CONSUMABLE WITHOUT BURNING IN THE SHAPE OF BAG Technical field

[0001] = The present disclosure belongs to the field of tobacco heating devices without burning it and relates to a process for manufacturing a consumable for a smoking device. Prior art

[0002] — A large number of devices for heating tobacco without burning it have been developed. in order to prevent the formation of harmful constituents during the combustion of tobacco. As a For example, we can cite the applications published under the numbers WO 2016 / 026810 and WO 2016 / 207407 which describe such devices. Sticks filled with tobacco are placed in these devices, the tobacco is then heated by the device to a temperature below the combustion temperature without being burned, which leads to the formation of an aerosol when the user draws air through the device. The aerosol generated when heating tobacco replaces cigarette smoke and has or- beneficial ganoleptics when inhaled by the user. This allows the user to inhale nicotine and tobacco flavors while reducing very sens- possibly its exposure to harmful components.

[0003] = For the user to adopt these heating devices, it is important that the experience obtained with these devices is as close as possible to the experience obtained with a classic cigarette, that is to say that the organoleptic properties of the aerosol generated for each puff, the resistance to inhalation for each puff and the number of puffs must be equivalent to those of a conventional cigarette.

[0004] — Conventionally, heating devices are loaded with a consumable in the form of a stem similar in appearance to a traditional cigarette. This consumable in the shape stem comprises several segments such as a segment including reconstituted tobacco to generate the aerosol, a cooling segment to cool the aerosol and prevent burning of the user's mouth and a filter segment comprising a cellulose acetate substrate to mainly prevent the introduction of reconstituted tobacco dust in the user's mouth. The consumable in stem shape is also made of several layers of different papers and of aluminum. Thus, the production of these rod-shaped consumables can be long and restrictive because it requires many steps. In addition, the rod-shaped consumables are not biodegradable. In addition, there are heating devices that are loaded by the user directly with chopped reconstituted tobacco, such as a pipe. The introduction of chopped tobacco into such devices has the disadvantage that the chopped tobacco not only ends up in the dedicated housing of these devices, but pieces can stick to the user's hand or fall next to the device, making loading inconvenient and complicated. This difficult use can cause some frustration for the user of the device. In addition, it is difficult to introduce a constant dose of reconstituted tobacco into these devices, which leads to variations in the organoleptic properties and therefore dissatisfaction of the vaper. Technical problem There is therefore a need for a manufacturing process that makes it possible to manufacture a biodegradable heat-not-burn consumable compatible with a device for heating tobacco without burning it. In particular, there is a need to provide a manufacturing method that is compatible with industrial production, allowing simple and rapid production. It is therefore to the credit of the inventors that they found it possible to meet these needs by means of a process for manufacturing a heat-without-burn consumable in the form of a sachet. Summary A method of manufacturing a waste heat consumable is provided comprising - a paper bag with an interior volume and two sealed ends, - a reconstituted plant leaf contained in the interior volume of the sachet and comprising: - one or more fibrous supports, each fibrous support comprising plant fibers, - a plant extract, and - an aerosol-generating agent, the method comprising the following steps: (a) providing a paper tube enveloping the reconstituted plant leaf between two open ends thereof, and b) seal the two open ends of the tube to make the heating consumable without burning. Advantageously, the method of the invention is easy to implement since it only requires simple production tools well known to those skilled in the art. The method of the invention also has the advantage of allowing high-speed mass production of consumables on an industrial scale. For example, a yield of more than 10,000 consumables per minute can be achieved. Furthermore, the process makes it possible to manufacture the consumable which is advantageously simple to use since it can be easily inserted into and extracted from a dedicated housing of a tobacco heating device without burning it and does not generate any dust. Furthermore, the experiences provided by the heat-not-burn consumable manufactured by the method of the invention and by a commercially available rod-shaped consumable are comparable in terms of organoleptic properties of the generated aerosol, duration of the experience and comfort of the experience due to comparable draw resistance. The consumable has a constant and high taste intensity as well as a constant and high volume. Furthermore, unlike a conventional rod-shaped consumable, the heat-without-burn consumable manufactured by the method of the invention can, due to its composition, degrade very quickly in the environment. This is particularly advantageous, since the environmental impact of the heat-without-burn consumable of the invention is lower than the environmental impact of a conventional rod-shaped consumable. Brief description of the drawings Other features, details and advantages will be shown in the following detailed description and in the figures, in which: Fig. 1 [Fig.1] is a view of the tube involved in step a) of the method according to the invention. consumable manufactured by the method according to the invention. Fig.2 [Fig.2] is a top view of the consumable manufactured by the method according to the invention. Fig. 3 [Fig. 3] is a side view of the consumable manufactured by the method according to the invention. Fig. 4 [Fig.4]] is a schematic representation of the compacting step a31) according to one embodiment of the manufacturing method of the invention. Detailed description of the invention Reference is now made to [Fig.1] to [Fig.4]. A first object of the present invention is a method of manufacturing a heating consumable without burning 1 comprising: - a paper bag 11 having an interior volume and two sealed ends 111, 112, - a reconstituted plant leaf 3 contained in the interior volume of the bag 11 and including: - one or more supports, each fibrous support comprising plant fibers, - a plant extract, and - an aerosol-generating agent, the method comprising the following steps: a) providing a paper tube 2 wrapping the reconstituted plant leaf 3 between two open ends 21, 22 thereof, and b) sealing the two open ends 21, 22 of the tube 2 to form the two sealed ends 111, 112, thus obtaining the non-burning heating consumable 1. For the purposes of this application, the term 'heat-not-burn consumable' means an element adapted to produce an aerosol when heated and having a shape adapted to be inserted into and extracted from a dedicated housing of a device for heating tobacco without burning it. According to one embodiment, the bag 11 may comprise, between the two sealed ends 111, 112, two opposite concave faces 114, 115 and two opposite convex faces 116, 117. The tube 2 provided in step a) of the manufacturing method according to the invention has a circular section, two open ends 21, 22 and the reconstituted plant leaf 3 inside. Tube 2 can have a length of 10 mm to 30 mm, in particular 15 mm to 25 mm. The tube 2 may have an outer diameter of 4 mm to 10 mm, in particular of 5 mm to 8 mm, more particularly of 6.2 mm to 7.2 mm. The outer diameter of the tube 2 determines the length of the two sealed ends 111, 112. In particular, the ratio between the length of the tube 2 and the outside diameter of the tube 2 may be between 1 and 7.5, in particular between 3 and 5. A tube 2 having dimensions in the above ranges advantageously leads to the formation of the sachet 11 having a shape facilitating insertion into and extraction from the dedicated housing of a tobacco heating device without burning the consumable 1. The paper of the tube 2 provided in step a) can wrap the reconstituted plant leaf 3 from one open end 21 to the other open end 22. This tube 2 is referred to by those skilled in the art as a reconstituted plant stem. Before step b), this tube 2 can be involved in a compacting step 31), as described below, to obtain a tube 2 in which the reconstituted plant leaf 3b is compacted between its two open ends 21, 22. This tube 2 is then involved in step b). The two sealed ends 111, 112 can be easily obtained by pressing the two end regions of the tube. In step b), the tube 2 is transformed into a bag 11 by sealing the two open ends 21, 22 of the tube 2. For example, step b) can be carried out by gluing the two open ends 21, 22 of the tube 2, by crimping the two open ends 21, 22 of the tube 2, by knurling the two open ends 21, 22 of the tube 2 or by combinations thereof, in particular by knurling the two open ends 21, 22 of the tube 2. Crimping can be done using a gear wheel. Step b) may include: - applying a layer of glue inside the tube 2 to the open ends 21, 22 thereof, and - pressing each open end 21, 22 to form each sealed end 111, 112 of the bag 11. Typically, the glue can be applied to the paper using a nozzle with a specific diameter. The nozzle diameter determines the width of the applied glue layer, and therefore the width of the glued joint formed. For example, a nozzle having a diameter of 0.6 mm to 1.8 mm, particularly having a diameter of 0.8 mm to 1.6 mm, may be used. The weight of the adhesive layer may be from 0.6 mg.cm” to 1.8 mg.em”, in particular from 0.66 mg.cm” to 1.5 mg.cm”, more particularly from 1 mg.cm? to 1.2 mg.em?. Advantageously, thanks to a grammage included in these ranges, the resistance of the two sealed ends 111, 112 is sufficient to guarantee the physical integrity of the sachet 11 and therefore of the consumable 1. Thus, the insertion into and extraction from a dedicated housing of a device for heating tobacco without burning it are facilitated for the consumable 1. Furthermore, thanks to a grammage in this range, the two sealed ends 111, 112 do not affect the organoleptic properties of the aerosol generated by the consumable 1 manufactured by the method of the present invention. The glue applied to one open end 21 and the glue applied to the other open end 22 may be any type of glue commonly used in the technical field of cigarette paper. The glue may typically be in the form of an aqueous solution or dispersion. The glue applied to one open end 21 and the glue applied to the other open end 22 may be the same or different, preferably the same. For example, the glue can be a natural glue, a synthetic glue or mixtures of these. Natural glue can be starch-based glue, dextrin-based glue, a casein-based glue, a cellulose-based glue, an animal glue, a latex glue or mixtures thereof, in particular a starch-based glue, more particularly an aqueous starch-based glue. The synthetic adhesive may be acrylics, polyurethane dispersion, ethylene vinyl acetate based adhesive, polyvinyl acetate based adhesive, polyvinyl alcohol based adhesive and mixtures thereof, in particular ethylene vinyl acetate based adhesive, polyvinyl acetate based adhesive, polyvinyl alcohol based adhesive or mixtures thereof, more particularly polyvinyl acetate based adhesive, polyvinyl alcohol based adhesive or mixtures thereof. Swift® Tak 1138 from HBFuller is an example of a polyvinyl acetate-based adhesive that can be used in the process of the present invention. Lesso® 5294 from Laesser Klebstoffe is an example of a polyvinyl alcohol-based adhesive that can be used in the process of the present invention. Alternatively, step b) may comprise: - pressing each open end 21, 22 to obtain two pressed open ends 21, 22, and - knurling each of the two pressed open ends 21, 22 to form each sealed end 111, 112 of the bag 11. Knurling is a well-known process. Those skilled in the art will know how to adapt the knurling parameters to carry out this alternative step b). The paper of the tube 2, and therefore the paper of the pouch 11, may be any paper suitable for the manufacture of a smoking or vaping article, such as a cigarette paper, a tobacco wrapper, a porous plug wrapper or combinations thereof, in particular a cigarette paper, a tobacco wrapper or combinations thereof, more particularly a tobacco wrapper. The cigarette paper may be made from wood pulp, tobacco fibers, flax fibers, sisal fibers, cocoa bean hull fibers, rice straw, esparto fibers and mixtures thereof, in particular from wood pulp, especially wood pulp. It may have at least one of a grammage of 12 g / m? to 50 g / n°, in particular 22 g / m° to 35 g / m?, an air permeability of 5 CORESTA units to 500 CORESTA units, in particular 15 CORESTA units to 80 CORESTA units, and a thickness of 20 µm to 80 µm, in particular 25 µm to 50 µm. It may also comprise a filler such as calcium carbonate (CaCO3), magnesium oxide (MgO) and mixtures thereof. Tobacco wrapper can be made from wood pulp, tobacco fibers, flax fibers, sisal fibers, rice straw cocoa bean hull fibers, esparto fibers and mixtures thereof, especially from tobacco fibers, wood pulp and mixtures thereof, in particular a mixture of tobacco fibers and wood pulp. It may have at least one of a grammage of 24 g / m? to 100 g / m?, in particular 32 g / m? to 51 g / m?, an air permeability of 0 CORESTA units to 150 CORESTA units, in particular 10 CORESTA units to 80 CORESTA units, and a thickness of 20 um to 200 um, in particular 75 um to 150 um. The porous filter paper may be made from wood pulp, flax fibers, sisal fibers, lyocell fibers, viscose fibers and mixtures thereof, in particular from wood pulp. It may have at least one of a grammage of 15 g / m? to 140 g / m?, in particular of 20 g / m° to 80 g / m°, more especially of 20 g / m? at 25 g / m?, an air permeability of 200 CORESTA units to 45,000 CORESTA units, in particular of 5,000 CORESTA units to 32,000 CORESTA units, more especially of 26,000 CORESTA units to 28,000 CORESTA units, and a thickness of 30 um to 300 um, in particular of 45 um to 215 um. The air permeability of paper can be determined by the NF ISO 2965:2019 standard by determining the air flow through a 1 cm' sheet of paper at a measuring pressure of 1.00 kPa. The NF EN ISO 536:2019 standard can be used to determine paper weight. A 1 m² sheet of paper is conditioned for at least 10 minutes at 23°C and 50% humidity before measurement. The weight of the sheet is measured on a scale, which gives the weight. To measure the thickness of the paper in bag 11, the method described in standard NF EN 1SO 534 (December 2011) can be used. A dead weight micrometer comprising a 25 cm measuring head with two flat, parallel and circular pressure faces can be used. During the measurement, the paper in bag 11 is placed between the two pressure faces for 10 seconds. The pressure exerted between the pressure faces during the thickness measurement is 20 kPa. The paper in bag 11 is conditioned for at least 10 minutes at 23°C and 50% humidity before the measurement. According to a specific embodiment, the cigarette paper may have a basis weight of 20 g / m? to 25 g / m?, a porosity of 20 CORESTA units to 30 CORESTA units and a thickness of 35 um to 45 um. According to a specific embodiment, the tobacco wrapper may have a grammage of 40 g / m? to 50 g / m°, a porosity of 45 to 55 CORESTA units and a thickness of 95 μm to 105 μm. According to a specific embodiment, the porous filter paper may have a basis weight of 20 g / m? to 25 g / m?, a porosity of 26,000 to 28,000 CORESTA units and a thickness of 89 um to 90 um. Advantageously, the aerosol generated by the consumable 1 manufactured by the process of the present invention from a tube 2 made of the cigarette paper of this specific embodiment, the tobacco wrapper of this specific embodiment or the porous filter paper of this specific embodiment has satisfactory organoleptic properties. According to the method of the present invention, the reconstituted plant leaf 3 comprises: - a fibrous support comprising plant fibers, - a plant extract, and - an aerosol-generating agent For the purposes of the present application, the term "fibrous support" means a base sheet consisting of plant fibers, in particular refined plant fibers. The base sheet is typically obtained by a papermaking process. For the purposes of this application, the term 'plant extract' designates all the water-soluble products of the plant. Advantageously, the plant extract comprises nicotine, and the compounds giving the aerosol organoleptic properties and / or therapeutic properties. For the purposes of this application, the term 'aerosol-generating agent' means a compound which allows the formation of an aerosol when heated, for example upon contact with hot air. For the purposes of the present application, the term "refined plant fibers" means plant fibers that have undergone a refining step allowing the fibrillation and / or cutting of the plant fibers. The refining step is conventionally implemented in a papermaking process, such as the papermaking process manufacturing reconstituted tobacco. On the other hand, the refining step is not implemented in a process manufacturing cast leaf reconstituted tobacco, such as that disclosed in documents EP O 565 360 and WO 2012 / 164009. For example, refined plant fibers may have a Schopper-Riegler degree (°SR) of 15°SR to 75° SR, particularly 20°SR to 65°SR, more particularly 25°SR to 55°SR. Typically, the fibrous support may comprise fibers from the same plant or from several plants. Typically, the dry matter weight content of the plant fibers included in the reconstituted plant leaf 3 may be 15% to 70%, in particular 20% to 61%, more particularly 30% to 57%. Typically, the fibrous support of the reconstituted plant leaf 3 may also comprise cellulose-based plant fibers. Cellulose-based plant fibers are fibers obtained by a chemical or mechanical or thermomechanical cooking process, such as wood pulp, or annual plants such as flax for example. A mixture of these cellulose-based plant fibers can also be used. Advantageously, these cellulose-based plant fibers can improve the mechanical strength properties of the reconstituted plant leaf 3. Typically, the cellulose-based plant fibers may represent from 0.5% to 20%, in particular from 3% to 17.5%, more particularly from 5% to 15% by weight of dry matter of the reconstituted plant leaf 3. Let Sac be the total content by weight of dry matter of the aerosol-generating agent included in the reconstituted plant leaf 3 of the consumable 1 manufactured by the method of the present invention. Sac may be from 10% to 30%, in particular from 12% to 25%, more particularly from 15% to 24%. The aerosol generated by a reconstituted plant leaf 3 having a Saç above the above-mentioned ranges causes an unwanted burning sensation of the mouth and / or throat (a phenomenon known as "hot puff"). The volume of aerosol generated by a reconstituted plant leaf 3 having a Sac below the above-mentioned ranges is too low to be pleasant. This aerosol is also not tasty. Typically, the aerosol-generating agent may be a polyol, a non-polyol, or a mixture thereof. Typically, an aerosol-generating agent that is a polyol may be sorbitol, glycerol, propylene glycol, triethylene glycol, or a mixture thereof. Typically, an aerosol-generating agent that is a non-polyol may be lactic acid, glyceryl diacetate, glyceryl triacetate, triethyl citrate, isopropyl myristate, or a mixture thereof. The aerosol generating agent may preferably be glycerol, propylene glycol or a mixture of glycerol and propylene glycol, with glycerol being preferred. An aerosol is generated upon heating the reconstituted plant leaf 3 of the consumable 1 manufactured by the method of the invention. Advantageously, the plant extract which comprises aromatic compounds imparts aromas of the plant to this aerosol. By simply changing the reconstituted plant leaf 3, the user can easily vary the aromas of the aerosol generated by heating said reconstituted plant leaf 3. The organoleptic properties and the therapeutic properties of the aerosol formed by heating said reconstituted plant leaf 3 may depend on the dry matter weight content of the plant extract included in the reconstituted plant leaf 3 of the consumable 1 manufactured by the method of the present invention. The total dry matter content of the plant extract depends on the plant used and, more particularly, on the content of aromatic compounds or compounds with therapeutic properties in the plant used. Let Sp be the total content by weight of dry matter of the plant extract included in the reconstituted plant leaf 3 of the consumable 1 manufactured by the method of the present invention. S, may be from 30% to 70%, in particular from 35% to 69%, more particularly from 40% to 68%. Advantageously, an Sp within these ranges of values ​​makes it possible to generate an aerosol with satisfactory organoleptic properties, i.e. with greater taste intensity, higher volume, a longer experience and a comfortable pressure drop. To determine Sp, the following method can be used: the reconstituted plant leaf 3 to be analyzed is ground to obtain a particle size less than or equal to | mm. The reconstituted plant leaf 3 is then mixed with boiling water for 45 minutes to extract all of the plant extract. Sp is calculated by the difference between the dry weight of the reconstituted plant leaf sample 3 to be analyzed and the dry weight of the fibrous residue after extraction. The sum of the total dry matter content by weight of the plant extract and the total dry matter content by weight of the aerosol generating agent, Sp + Sac, may be 40% to 80%, in particular 45% to 78%, more particularly 50% to 76%. The ratio of the total dry matter content by weight of the plant extract to the total dry matter content by weight of the aerosol-generating agent, Sp / Sac, may be 1.0 to 4, in particular 1.5 to 3.6, more particularly 2 to 3.4. Advantageously, the organoleptic properties of the aerosols formed are even more satisfactory when the reconstituted plant leaf 3 included in the consumable manufactured according to the method of the invention has an Sp / Sag ratio in the ranges mentioned above. The plant fibers and the plant extract may be obtained independently from a plant selected from spore-producing plants, seed-producing plants, or a mixture thereof. In particular, the plant may be a plant selected from the tobacco plant, food plants, aromatic plants, perfume plants, medicinal plants, or a mixture thereof. According to a particular embodiment, the plant is the tobacco plant. If the plant is a medicinal plant, the aerosol generated by heating the reconstituted plant leaf 3 may also have therapeutic properties so that the reconstituted plant leaf 3 can be used for therapeutic treatment. Advantageously, a plant extract obtained from a mixture of plants makes it possible to offer a wide range of organoleptic properties and / or therapeutic properties. A mixture of plants also makes it possible to counterbalance the unpleasant organoleptic properties of a plant in the mixture, for example a medicinal plant. medicinal, by the pleasant organoleptic properties of another plant in the mixture, for example the tobacco plant, an aromatic plant or a perfume plant. Typically, the plant fibers may be obtained from a first plant and the plant extract may be obtained from a second plant. Indeed, the fibers of a plant may not have mechanical properties allowing the formation of a fibrous support, but the extract of this plant may confer the desired organoleptic and / or therapeutic properties on the aerosol. Conversely, the fibers of a plant may have mechanical properties allowing the formation of a fibrous support, but the extract of this plant may not confer the desired organoleptic and / or therapeutic properties on the aerosol. Advantageously, the mixture of plants to obtain the plant fibers makes it possible to adjust the mechanical properties of the reconstituted plant leaf 3 and / or the organoleptic or chemical properties of the aerosol. When the plant is the tobacco plant, the tobacco fibers and tobacco extract may be obtained from any tobacco plant or tobacco-type plant, for example, Virginia tobacco, Burley tobacco, air-cured tobacco, dark air-cured tobacco, Oriental tobacco, sun-cured tobacco, fire-curved tobacco, or a mixture thereof. Commonly, food plants are garlic, coffee, ginger, licorice, rooibos, Stevia rebaudiana, tea, cocoa, chamomile, mate, star anise, fennel, lemongrass. Typically, aromatic plants are basil, turmeric, cloves, bay leaf, oregano, mint, rosemary, sage, thyme. Generally, the fragrant plants are lavender, rose, eucalyptus. Typically, medicinal plants are those listed in the document, List of Traditionally Used Medicinal Plants (French Pharmacopoeia January 2016, published by the French National Agency for the Safety of Medicines (ANSM) or plants known to contain compounds with therapeutic properties. Typically, medicinal plants listed are ginkgo, ginseng, sour cherry, peppermint, willow, and red vine. Typically, eucalyptus is one of the medicinal plants known to include compounds that have therapeutic properties. Typically, the plant fibers and plant extract of the re-constituted plant leaf 3 may be derived from various parts of the plant, the plant parts being parts of the plant itself or the result of processing various plant parts. Typically, the plant parts may be whole parts of the plant or debris from threshing or mixing and chopping the plant parts. Typically, the plant parts may be selected from the parts of the plant richest in aromatic compounds that give the aerosol its organoleptic properties. Typically, these parts may be the whole plant, the aerial parts of the plant, such as the flower bud, the branch bark, the stem bark, the leaves, the flower, the fruit and its peduncle, the seed, the petal, the flowering top, or the underground parts, for example the bulb, the roots, the root bark, the rhizome, or a mixture thereof. The plant part may also be the result of the mechanical, chemical, or mechanochemical treatment of one or more parts of the plant, such as, for example, the shell protecting the cocoa bean resulting from the process of hulling the bean. Typically, the parts of the tobacco plant may be the parts richest in aromatic compounds that give the aerosol its organoleptic properties. Typically, the parts of the tobacco plant may be the parenchyma (lamina), possibly with the addition of the ribs of the tobacco plant. Typically, the parts of the tobacco plant may be the leaves of the tobacco plant or the debris from threshing or mixing and chopping into scaferlatti the leaves and ribs of the tobacco plant. Among the edible plants, garlic bulb, coffee cherry, star anise fruit, ginger rhizome, licorice root and rooibos, Stevia rebaudiana or tea leaves can be chosen as parts, for example. Among the aromatic plants, one can select as parts, for example, the flower buds of the clove tree (cloves), the leaves of basil, bay leaf and sage, the leaves and flowering tops of mint, oregano, rosemary and thyme, or the rhizome of turmeric. Typically, among the perfume plants, the flower and flowering top of lavender, or the bud and petals of the rose flower can be selected. Among the medicinal plants listed in the French pharmacopoeia, one can, for example, choose the gingko leaf, the underground part of ginseng, the stalk of the sour cherry fruit (cherry stem), the leaves and flowering tops of peppermint, the stem bark and leaves of willow, or even the leaves of red vine. Typically, the fibrous support of the reconstituted plant leaf 3 may also comprise cellulose-based plant fibers. Cellulose-based plant fibers are fibers obtained by a chemical, mechanical, or thermomechanical cooking process, such as wood pulp, or annual plants such as flax, for example. A mixture of these cellulose-based plant fibers can also be used. Advantageously, these cellulose-based plant fibers can improve the mechanical strength properties of the reconstituted plant leaf 3. Typically, the cellulose-based plant fibers may represent from 0.5% to 20%, in particular from 3% to 17.5%, more particularly from 5% to 15% by weight of dry matter of the reconstituted plant leaf 3. The density of the reconstituted plant leaf 3 involved in the method of the invention may be from 1.5 g / cm* to 0.60 g / cm3, in particular from 1 g / cm* to 0.65 g / em°. Alternatively, the density of the reconstituted plant leaf 3 involved in the method of the invention may be less than 0.60 g / cm?, in particular from 0.40 g / em° to 0.59 g / m°, more particularly from 0.45 g / cm° to 0.58 g / em°. Advantageously, a density within these ranges of values ​​makes it possible to generate, at a comfortable draw resistance, an aerosol having satisfactory organoleptic properties, i.e. having a constant high taste intensity and a constant high volume. The density of the reconstituted plant leaf 3 is calculated by dividing its weight by its thickness. To determine the weight of the reconstituted plant leaf 3, the following method can be used: A 0.25 m? sample is cut using a template (dimensions: 57.5 x 43.5 cm) approximately 15 cm from the edge of the reconstituted plant leaf 3 to be analyzed. The sample is then folded in four and placed on a hot plate to be dried so as to remove the water without removing the aerosol-generating agent. The dried sample is then weighed to determine the weight of the reconstituted plant leaf 3. To determine the thickness of the reconstituted plant leaf 3, the method described in standard NF EN ISO 534 (December 2011) adapted to reconstituted plant leaves can be used: - measurement of the average thickness of the control parchment paper used to measure the thickness of the reconstituted plant leaf (6 measurements minimum on a layer, on places marked on the paper), - the reconstituted plant leaf sample is placed between 2 layers of baking paper, - as soon as the micrometer probe is in place, wait 30 seconds before taking the measurement (stabilization of the sample during thickness measurement), - 6 measurements minimum at the places marked on the sheet of baking paper, - the thickness of the calculated reconstituted plant leaf is the average of the overall thickness measured (reconstituted plant leaf + 2 layers of parchment paper) from which is subtracted 2 times the average thickness of the parchment paper. Typically, the reconstituted plant leaf 3 implemented in the method of the invention may have a grammage of less than 300 g / m?, in particular from 60 g / m? to 250 g / m?, very particularly from 80 g / m° to 200 g / m°, even more particularly from 105 g / m? to 130 g / m?. Typically, the thickness of the fibrous support of the reconstituted plant leaf 3 used in the method of the invention may be from 100 μm to 450 μm, in particular from 120 μm to 375 μm, very particularly from 140 μm to 325 μm, even more particularly from 180 μm to 250 μm. A person skilled in the art will be able to adapt the weight of the reconstituted plant sheet 3 and the thickness of the fibrous support in order to obtain the desired density. For example, to obtain these thickness and / or density values, the reconstituted plant sheet 3 may undergo a calendering step. Thus, according to one embodiment of the invention, the reconstituted plant sheet 3 of the invention may be calendered. Inside the tube 2, and therefore inside the sachet 11, the reconstituted plant leaf 3 can be in particulate form, in the form of a creped leaf, in the form of scaferlatis. The ratio between the mass of the reconstituted plant leaf 3 and the internal volume of the sachet 11 may be from 0.30 g.cm” to 1.5 g.cm”, in particular from 0.35 g.cm* to 1.25 g.cm”, more particularly from 0.39 g.cm” to 1 g.cm=. Advantageously, a ratio within these ranges of values ​​makes it possible to generate, at a comfortable draw resistance, an aerosol with satisfactory organoleptic properties, i.e. with a constant and high taste intensity as well as a constant and high volume. The consumable 1 may further comprise one or more parts of natural plant leaves, in particular one or more parts of natural tobacco leaves in the interior volume of the sachet 11. The internal volume of the bag 11 can be determined by determining the volume of the bag 11 and then subtracting the volume of the paper. To obtain a ratio within these ranges, the reconstituted plant leaf 3b can be compacted in the tube 2 provided in step a) of the method of the invention. Consequently, the method according to the invention may comprise, between step a) and step b), a step a31) of compacting the reconstituted plant leaf 3 in the tube 2. Step a31) may comprise applying pressure p to the reconstituted plant leaf 3 through the two open ends 21, 22 of the tube 2 in the opposite direction to obtain the tube 2 comprising the compacted reconstituted plant leaf 3b between the two open ends 21, 22. The person skilled in the art will know how to adapt the pressure p to compact the reconstituted plant leaf 3 inside the tube 2 and form two voids at each end. open 21, 22, the volume of each void being adapted to close the two open ends 21, 22 of the tube 2 to manufacture the consumable 1. This compacting step a3l) can also facilitate the sealing step b). Indeed, - the distance between the compacted reconstituted plant leaf 3b and an open end 21 of the tube 2 resulting from this compacting step a31) is greater than the distance between the reconstituted plant leaf 3 and the open end 21 of the tube 2 before the compacting step a31), and - the distance between the compacted reconstituted plant leaf 3b and the other open end 22 of the tube 2 resulting from this compacting step a31) is greater than the distance between the reconstituted plant leaf 3 and the other open end 22 of the tube 2 before the compacting step a31). There is therefore more space to carry out step b) and obtain the two sealed ends 111, 112 of the bag 11. During step a31), the pressure p applied to the reconstituted plant leaf 3 through the two open ends 21, 22 of the tube 2 can be exerted by inserting a rod inside each open end 21, 22 of the tube 2. Step (a) may include the following sub-steps: all) unwinding a roll of paper to obtain an unwound roll of paper, al2) applying an adhesive layer to one side of the unwound roll of paper, a13) forming a hollow tube of paper by bringing the adhesive layer and one side of the unwound roll of paper into contact, al4) cutting the hollow paper tube to obtain a hollow cut paper tube, and a15) introducing the reconstituted plant leaf 3 into the cut tube to obtain the paper tube 2 enveloping a reconstituted plant leaf 3 between its two open ends 21, 22. Step (a) may, alternatively, comprise the following sub-steps: a21l) unrolling a roll of paper to obtain an unrolled roll of paper, a22) applying the reconstituted plant leaf 3 to one side of the unrolled roll of paper, a23) applying an adhesive layer to one side of the unrolled paper reel, a24) forming a paper tube to wrap the reconstituted plant leaf 3 by bringing the adhesive layer into contact with one side of the unrolled paper reel, and a25) cut the paper tube to obtain the paper tube 2 enveloping a reconstituted plant leaf 3 between its two open ends 21, 22. Steps a22) and a23) of this step a) can be reversed. Step a22) may be such that the reconstituted plant leaf 3 is applied continuously or discontinuously. When the reconstituted plant leaf 3 is applied discontinuously, then areas comprising the reconstituted plant leaf 3 and areas devoid of reconstituted plant leaf 3 are alternated on the face of the unrolled paper reel. Consequently, step a25) is such that the cutting is carried out in the area devoid of reconstituted plant leaf 3. When the reconstituted plant sheet 3 is applied continuously, then step a25) is such that the cutting is carried out through the reconstituted plant sheet 3. The paper of the tube 2 resulting from this step a25) wraps the reconstituted plant sheet 3 from one open end 21 to the other open end 22. This tube 2 is involved in the compacting step 31), before being involved in step b). For the purposes of the present invention, the term "roll of paper" means a paper as described above in relation to the tube 2, the general shape of which, once the roll is unwound, is a rectangle. The width may be from 30 mm to 75 mm, in particular approximately 36 mm, approximately 44 mm or approximately 53 mm. Typically, the length of the rectangle is from several hundred to several thousand meters, for example from 1000 m to 15,000 m, in particular from 3000 m to 10,000 m, most particularly from 5000 m to 8000 m. The length of the rectangle may also be one or more tens of meters; in this case, the sheet is called a roll. The length of the rectangle may also be one or more meters; in this case, the sheet is called a ream. Substeps a!2) and a13) and substeps a23) to a24) of the method result in the formation of a third seal 113 which, at the end of step b), connects the two sealed ends 111, 112 of the bag 11. The glue of the adhesive layer applied in substep a12) and substep a23) may be any type of glue commonly used in the technical field of cigarette paper and may be selected from the glues defined above in relation to the glue applied to one open end 21 and the glue applied to the other open end 22. The glue of the adhesive layer may be the same as the glue used in sealing step b). The weight of the adhesive layer applied in sub-step a12) and sub-step a23) may be from 0.6 mg.cm? to 1.8 mg.cm?, in particular from 0.66 mg.cm” to 1.5 mg.cm”, more particularly from 1 to 1.2 mg.cm*. Advantageously, thanks to a grammage in these ranges, the resistance of the third seal 113 is sufficient to guarantee the physical integrity of the tube 2 during the different stages of the method of the present invention, then the physical integrity of the sachet 11 and therefore the physical integrity of the consumable 1. Thus, the insertion into and extraction from a dedicated housing of a device for heating tobacco without burning it are facilitated for the consumable 1. Furthermore, thanks to a grammage in this range, the third seal 113 does not affect the organoleptic properties of the aerosol generated by the consumable 1 manufactured by the method of the present invention. Sub-steps a14) and a25) of cutting constitute a conventional step. Consequently, it can be carried out by any method known to those skilled in the art. Introduction step a15) can be carried out by any method known to those skilled in the art. In one embodiment, the reconstituted plant leaf 3 may be manufactured according to the following steps: cl) passing plant fibers through a paper machine to produce a base sheet, c2) bringing a plant extract into contact with the fibrous support, and bringing at least two fibrous supports into contact when the reconstituted plant leaf 3 comprises more than one fibrous support, to obtain a wet reconstituted plant leaf, and c3) drying the wet reconstituted plant leaf to produce the reconstituted plant leaf 3, wherein an aerosol-generating agent is incorporated during step c2) and / or between steps c2) and c3). The fibrous support can be produced using a paper machine. According to a preferred embodiment of the invention, the reconstituted plant sheet 3 of the consumable 1 according to the invention can be a reconstituted plant sheet 3 obtainable by a papermaking process. According to one embodiment, the plant fibers and the plant extract are obtained according to the following steps: (d) mixing one or more plant parts with a solvent in order to extract the plant extract from the plant fibres, €) separate the plant extract from the plant fibers. The plant extract and the plant fibers are therefore typically obtained by means of a dissociation process. In step d), one or more plant parts are mixed with a solvent, for example in a digester, in order to extract the plant extract from the plant fibers. In step e), the plant extract is separated from the plant fibers, for example by passing through a screw press, in order to isolate and obtain, on the one hand, the plant fibers and, on the other hand, the plant extract. Typically, the solvent may be an apolar solvent, an aprotic polar solvent, a protic polar solvent, or a mixture thereof, in particular the solvent may be methanol, dichloromethane, ethanol, acetone, butanol, water or a mixture thereof, more particularly the solvent is ethanol, acetone, water or a mixture thereof. According to a particular embodiment, the solvent is an aqueous solvent, more particularly the solvent is water. The person skilled in the art will know how to adapt the temperature of the solvent during step d) to the plant, the part of the plant and the parts of the plant to be treated. Typically, the temperature of the solvent during the treatment of a root or bark will be higher than the temperature of the solvent during the treatment of a leaf or petal. Typically, the temperature of the solvent during step d) may be from 10°C to 100°C, in particular from 30°C to 90°C, more particularly from 50°C to 80°C. According to the embodiment in which the solvent is water and the plant is tobacco, the temperature of the water may typically be from 30°C to 80°C. Typically, for the treatment of the ribs of a tobacco plant, the temperature of the water may be from 50°C to 80°C. Typically, for the treatment of the parenchyma of a tobacco plant, the temperature of the water may be from 30°C to 70°C. Typically, plant fibers can be refined in a refiner and are then involved in step cl). Typically, plant fibers can come from a variety of plants. The fibers of each plant can be obtained separately according to the dissociation process described above. They can then be mixed so that this mixture of fibers from different plants passes through the paper machine so as to constitute the fibrous support. It is also possible to obtain fibers from different plants together by bringing together one or more parts of the different plants and then subjecting them to the dissociation process described above. The water temperature will then be adapted to the plants to be treated and, in particular, to the plant requiring the highest water temperature for the extraction of the extract from this plant. This variant embodiment is very advantageous because it makes it possible to obtain the fibers from the different plants without carrying out several dissociation processes in parallel. Typically, the plant extract can be an extract of various plants. The extract of various plants can be obtained by mixing various plant extracts obtained separately according to the dissociation process described above. It is also possible to obtain the extract of various plants by combining one or more parts of the various plants and then subjecting them to the dissociation process described above. The water temperature will then be adapted to the plants to be treated and, in particular, to the plant requiring the highest water temperature for the extraction of the water-soluble extract of this plant. This alternative embodiment is very advantageous because it makes it possible to obtain the extract of different plants without carrying out several processes in parallel. In both these situations, the extract of various plants is brought into contact with the fibrous support during step c2). Typically, different plant extracts, obtained according to the dissociation method described above, can also be brought into contact with the fibrous support separately during step c2). Typically, the plant extract may be concentrated before being contacted with the fibrous support in step c2). A device such as a vacuum evaporation device may be used to concentrate the plant extract. Typically, in step c2), the plant extract and the aerosol-generating agent may be contacted with the fibrous support one after the other, or may be mixed so as to be contacted with the fibrous support together. Typically, step c2) can be carried out by impregnation or by spraying, in particular by impregnation. Typically, the impregnation can be carried out by means of a size-press. Typically, drying step c3) can be carried out by infrared ramp, American battery dryer rollers, hot air drying in a tunnel dryer, a vertical dryer, a fluidized bed dryer, a pneumatic dryer, in particular in a tunnel dryer. The method may comprise, after step c3), a step c4) of shaping the reconstituted plant leaf 3 produced in step c3) in particulate form, in creped leaf form, or in scaferlatis form. This step c4) can be carried out by any technique known to those skilled in the art, Examples Example |: Manufacture of consumables according to the method of the present invention. In this example, the consumables for samples 1 to 14 were manufactured as follows: 1 / a conventional paper cigarette tube was manufactured by the following conventional process : a 70mm x 25mm rectangle of paper was cut from a roll of cape, 1.68 mg of glue was applied along the entire 70 mm of the paper rectangle to a width of 2 mm with a 2 mm wide spatula, the paper is wrapped around a first stainless steel rod 100 mm long and 7 mm + / - 0.02 mm in diameter, bringing the glued side closer to the unglued side so as to form a packaging tube, manual pressure was applied along the entire 70 mm length, with the stainless steel rod still inside the casing tube, the first stainless steel rod was then removed to obtain the tube, 630 mg of reconstituted tobacco leaf (in the form of scaferlati) was introduced into the chamber of the Coresta Making cigarette making machine (7.2 mm in diameter), manufactured by EFKA (Germany). The prepared tube was installed in the Coresta Making device at the designated location. By operating the lever of the cigarette making machine, the reconstituted tobacco leaf was pushed into the tube hollow. A 70 mm long reconstituted tobacco rod was thus prepared. 2 / Two second stainless steel rods of smaller diameter (5 mm in diameter) were placed at each open end of the reconstituted tobacco rod, then simultaneously inserted inside the tube. As a result, the reconstituted tobacco leaf was compacted inside the tube and two voids of 4 mm each were formed at each open end of the tube once the two stainless steel rods were removed. 3 / The sealing of the two open ends of the tube is carried out as follows: a stainless steel rod is removed from one open end, 0.136 mg of glue was applied with a spatula over a width of 1 mm on the paper, inside the open end, along half the diameter of the tube, this open end was pressed with a stainless steel plate for 5 seconds to obtain an effective seal, These 3 steps were duplicated at the other open end of the tube to obtain the consumable. All examples are made with this protocol, except samples 9, 10, 12, 13, 14, which were made with: an initial rectangle of 70 mm x 27 mm, a first stainless steel rod with a diameter of 7.8 mm + 0.02 mm, a Privileg King size cigarette making machine (8 mm diameter), 0.151 mg of glue applied to the inside of the open end, 875 mg of tobacco used for samples 9 and 10 , 1050 mg for sample 12, 1138 mg for sample 13, and 1488 mg for sample 14. The shapes of these Samples 1 to 14 are suitable for incorporation into the dedicated housing of an Arkx® heating device. The differences between the different consumables are paper (see the properties of different papers in [Table 1] below), glue and reconstituted tobacco. These differences are shown in [Table 2] below. [Tables 1] THE LAWS GE THESE EXAMINATIONS 1 TO 14 ARE SUITABLE FOR USE IN A dedicated housing for an Arkx® heating device. The differences between the different consumables are the paper (see the different papers in [Table 1] below), the glue and the tab. These differences are presented in [Table 2] below. [Tables 1] |Paper Paper weight |Paper air permeability (g / m?) (Coresta) Tobacco wrap |46 50 Cigarette paper 23.5 25 garlets Paper for 21.5 27100 porous filter Example 2: Comparison of the pull resistance and organoleptic properties of aerosols generated by the consumables of Example 1 and a commercially available consumable. The organoleptic properties of the aerosols generated by samples 1 to 11 of Example 1 are evaluated by an independent expert according to the following protocol. These samples are successively evaluated by an independent expert in the Arkx® heating device. The reconstituted tobacco leaf of the commercially available consumable stick HeetsTM is also evaluated in the same heating system, but this reconstituted tobacco leaf is not wrapped. The experience provided by all consumables according to the invention is comparable to the experience provided by the commercially available consumable. However, the experience provided by certain consumables according to the invention is more satisfactory, In detail: - the aerosol generated by the consumable in sample 1 has a more intense tobacco taste than the aerosol generated by samples 3 and 5, - the aerosol generated by the consumable in sample 2 has a more intense tobacco taste than the aerosol generated by samples 4 and 6, - compared to the consumable of sample 7, the consumable of sample 9 generates an aerosol with a more intense tobacco taste, a larger volume, a greater amplitude in the mouth and a greater irritation (which is positive because it is closer to the experiences provided by conventional cigarettes). In addition, the consumable of sample 9 allows for a longer experience. The consumable of sample 9 also allows for a more comfortable experience since the resistance to inhalation is more comfortable and less variable, and - Compared to Sample 10 consumable, Sample 8 consumable generates an aerosol with a higher tobacco flavor intensity. In addition, Sample 8 consumable allows for a longer and more comfortable experience. This is because the draw resistance is more comfortable and less variable. Without wishing to be bound by any theory, the inventors believe that this difference in the duration of experience may result from: - tobacco wrapper which brings a tobacco aroma to the aerosol when it passes through the tobacco wrapper, and - the higher ratio between the mass of the reconstituted plant leaf and the internal volume of the sachet of samples 9 and 10 compared to samples 7 and 8. Without wishing to be bound by any theory, the inventors are of the opinion that this difference in duration of experience may result from: - tobacco wrapper which adds a tobacco aroma to the aerosol when it is in use crosses the tobacco cape, and - the higher ratio between the mass of the reconstituted plant leaf and the internal volume of the sachet of samples 9 and 10 compared to samples 7 and 8. [Tables 2] Echa |Paper Balance of the reconstituted plant Co [Ratio of the mass of the | ntillo | Agent generating plant leaf re- n of aerosols, Bag (%) |(%) |(g / em* ) constituted to the internal volume of the sachet (g.cm* | ) [1 Glycerin cap: 15%. [42 lo,5 |A 0,39 |2 |Glycerin |Cape: 16.5%. |55 |0.58 |A 0.39 A |0.39 |ss [0.58 |A [0.39 |5 [Paper |Glycerin: 15%. |é2 Jos |A |0.39 [55 [0.58 |A [0.39 (7 Capede |Glycerin:15%. |48 |0.49 |B 0.40 48 [49 |B |oss [l0 |Capede |Glycerin: 15.2%. |50 052 |B |o55 11 - [Cape of |Glycerin: 18.4% [53 3 |o5s |B 0.39 ; |Glycerin: 18.4% Propylene glycol: 4.2%; |Glycerin: 23.7%. [12 “ |Capede |Glycerin: 23.7%. |s1 [0.68 |B [0.66 tobacco [13 [Capede |Glycerin: 21.2%. |58, [0.71 | [0.72 tobacco 3 | 14 |Capede |Gtycerin: 22.5%. |67, tobacco 5 A: Lesso® 5294: from Laesser Klebstoffe B: Swift® Tak 1138 from HBFuller

Claims

Claims

1. Method of manufacturing a heating consumable without burning (1) including - a paper bag (11) with an interior volume and two ex- sealed ends (111, 112), - a reconstituted plant leaf (3) contained in the interior volume of the bag (11) and comprising: - one or more fibrous supports, each fibrous support comprising plant fibers, - a plant extract, and - an aerosol-generating agent, the method comprising the following steps: a) provide a tube (2) of paper wrapping a plant leaf re- constituted (3) between two open ends (21, 22) thereof, and b) seal the two open ends (21, 22) of the tube (2) to make the heating consumable without burning (1).

2. A method according to claim |, wherein the sealing step b) is made by gluing the two open ends (21, 22), crimping the two open ends (21, 22) or by knurling both ends open (21, 22), or their combinations.

3. A method according to claim 2, wherein the bonding is carried out with a glue chosen from a starch-based glue, a glue based on dextrin, a casein-based glue, a cellulose-based glue, a animal glue, latex glue, acrylics, poly- dispersion urethane, an ethylene-vinyl acetate based glue, an ethylene-vinyl acetate based glue polyvinyl acetate, polyvinyl alcohol-based glue or their mixtures

4. A method according to claim 2, wherein the crimping is carried out at using a cogwheel.

5. A method according to any one of claims 1 to 4, wherein the tube paper (2) is cigarette paper, tobacco wrapper, paper for porous filter or their combinations.

6. A method according to any one of claims 1 to 5, wherein the total dry matter content by weight of the aerosol-generating agent is 10% to 30%.

7. A method according to any one of claims 1 to 6, wherein the total content by weight of dry matter of the plant extract is 30% at 60%.

8. A method according to any one of claims 1 to 7, wherein the plant of the reconstituted plant leaf (3) is the tobacco plant.

9. A method according to any one of claims 1 to 8, wherein, at inside the tube (2), the reconstituted plant leaf (3) is in the form particulate, in the form of a creped sheet, in the form of scaferlatis.

10. A method according to any one of claims 1 to 9, wherein the ratio between the mass of the reconstituted plant leaf (3) and the internal volume of the sachet (11) of the consumable (1) is between 0.30 g.em* and 1.5 g.cm”.

11. A method according to any one of claims 1 to 10, comprising between step a) and step b), a step a31) of compacting the sheet of reconstituted plant (3) in the tube (2).

12. A method according to any one of claims 1 to 11, wherein step a) includes the following sub-steps: all) unroll a roll of paper to obtain a roll of paper unrolled, al2) apply an adhesive layer on one side of the coil of unrolled paper, al13) form a hollow tube of paper by putting in contact the adhesive layer and one side of the unrolled paper reel, al4) cut the hollow paper tube to obtain a hollow paper tube cut, and al5) introduce the reconstituted plant leaf (3) into the tube cut to obtain the tube (2) in paper wrapping a sheet of reconstituted plant (3) between its two open ends (21, 22).

13. Method according to any one of claims 1 to 11, in which step a) includes the following sub-steps: a21) unroll a roll of paper to obtain a roll of paper unrolled, a22) apply the reconstituted plant leaf (3) on one side from the unrolled paper reel, a23) apply an adhesive layer to one side of the paper reel unrolled, a24) form a paper tube to wrap the sheet of reconstituted plant (3) by bringing the adhesive layer into contact with one side of the unrolled paper reel, and a25) cut the tube of paper to obtain the tube (2) in paper wrapping a sheet of reconstituted plant (3) between its two open ends (21, 22).

14. | Method according to any one of claims 1 to 13, in which the reconstituted plant leaf (3) is manufactured according to the following steps cl) passing plant fibers through a paper machine to produce a base sheet, c2) bringing a plant extract into contact with the fibrous support, and bring at least two fibrous supports into contact when the sheet of reconstituted plant (3) comprises more than one fibrous support, to obtain a wet reconstituted plant leaf, and c3) drying the wet reconstituted plant leaf to produce the reconstituted plant leaf (3), wherein an aerosol-generating agent is incorporated during step c2) and / or between steps c2) and c3).

15. The method of claim 14 further comprising, after step C3), a step c4) of shaping the reconstituted plant leaf (3) produced in step c3) in particulate form, in sheet form curly, in the form of shredded tobacco.