Classifications

• • A—HUMAN NECESSITIES
  • A24—TOBACCO; CIGARS; CIGARETTES; SIMULATED SMOKING DEVICES; SMOKERS' REQUISITES
  • A24B—MANUFACTURE OR PREPARATION OF TOBACCO FOR SMOKING OR CHEWING; TOBACCO; SNUFF
  • A24B15/00—Chemical features or treatment of tobacco; Tobacco substitutes, e.g. in liquid form
  • A24B15/10—Chemical features of tobacco products or tobacco substitutes
  • A24B15/12—Chemical features of tobacco products or tobacco substitutes of reconstituted tobacco
• • A—HUMAN NECESSITIES
  • A24—TOBACCO; CIGARS; CIGARETTES; SIMULATED SMOKING DEVICES; SMOKERS' REQUISITES
  • A24B—MANUFACTURE OR PREPARATION OF TOBACCO FOR SMOKING OR CHEWING; TOBACCO; SNUFF
  • A24B15/00—Chemical features or treatment of tobacco; Tobacco substitutes, e.g. in liquid form
  • A24B15/10—Chemical features of tobacco products or tobacco substitutes
  • A24B15/16—Chemical features of tobacco products or tobacco substitutes of tobacco substitutes
  • A24B15/167—Chemical features of tobacco products or tobacco substitutes of tobacco substitutes in liquid or vaporisable form, e.g. liquid compositions for electronic cigarettes
• • A—HUMAN NECESSITIES
  • A24—TOBACCO; CIGARS; CIGARETTES; SIMULATED SMOKING DEVICES; SMOKERS' REQUISITES
  • A24B—MANUFACTURE OR PREPARATION OF TOBACCO FOR SMOKING OR CHEWING; TOBACCO; SNUFF
  • A24B15/00—Chemical features or treatment of tobacco; Tobacco substitutes, e.g. in liquid form
  • A24B15/18—Treatment of tobacco products or tobacco substitutes
  • A24B15/28—Treatment of tobacco products or tobacco substitutes by chemical substances
  • A24B15/30—Treatment of tobacco products or tobacco substitutes by chemical substances by organic substances
  • A24B15/302—Treatment of tobacco products or tobacco substitutes by chemical substances by organic substances by natural substances obtained from animals or plants
• • A—HUMAN NECESSITIES
  • A24—TOBACCO; CIGARS; CIGARETTES; SIMULATED SMOKING DEVICES; SMOKERS' REQUISITES
  • A24B—MANUFACTURE OR PREPARATION OF TOBACCO FOR SMOKING OR CHEWING; TOBACCO; SNUFF
  • A24B15/00—Chemical features or treatment of tobacco; Tobacco substitutes, e.g. in liquid form
  • A24B15/18—Treatment of tobacco products or tobacco substitutes
  • A24B15/28—Treatment of tobacco products or tobacco substitutes by chemical substances
  • A24B15/30—Treatment of tobacco products or tobacco substitutes by chemical substances by organic substances
  • A24B15/32—Treatment of tobacco products or tobacco substitutes by chemical substances by organic substances by acyclic compounds
• • A—HUMAN NECESSITIES
  • A24—TOBACCO; CIGARS; CIGARETTES; SIMULATED SMOKING DEVICES; SMOKERS' REQUISITES
  • A24B—MANUFACTURE OR PREPARATION OF TOBACCO FOR SMOKING OR CHEWING; TOBACCO; SNUFF
  • A24B3/00—Preparing tobacco in the factory
  • A24B3/14—Forming reconstituted tobacco products, e.g. wrapper materials, sheets, imitation leaves, rods, cakes; Forms of such products
• • A—HUMAN NECESSITIES
  • A24—TOBACCO; CIGARS; CIGARETTES; SIMULATED SMOKING DEVICES; SMOKERS' REQUISITES
  • A24C—MACHINES FOR MAKING CIGARS OR CIGARETTES
  • A24C5/00—Making cigarettes; Making tipping materials for, or attaching filters or mouthpieces to, cigars or cigarettes
  • A24C5/01—Making cigarettes for simulated smoking devices
• • A—HUMAN NECESSITIES
  • A24—TOBACCO; CIGARS; CIGARETTES; SIMULATED SMOKING DEVICES; SMOKERS' REQUISITES
  • A24D—CIGARS; CIGARETTES; TOBACCO SMOKE FILTERS; MOUTHPIECES FOR CIGARS OR CIGARETTES; MANUFACTURE OF TOBACCO SMOKE FILTERS OR MOUTHPIECES
  • A24D1/00—Cigars; Cigarettes
  • A24D1/20—Cigarettes specially adapted for simulated smoking devices
• • A—HUMAN NECESSITIES
  • A24—TOBACCO; CIGARS; CIGARETTES; SIMULATED SMOKING DEVICES; SMOKERS' REQUISITES
  • A24F—SMOKERS' REQUISITES; MATCH BOXES; SIMULATED SMOKING DEVICES
  • A24F40/00—Electrically operated smoking devices; Component parts thereof; Manufacture thereof; Maintenance or testing thereof; Charging means specially adapted therefor
  • A24F40/20—Devices using solid inhalable precursors

Definitions

• the present disclosure relates to the field of devices for heating tobacco without burning it and the subject thereof is a reconstituted plant sheet obtained by means of a high-density papermaking process.
• Reconstituted tobacco is more suitable for these heating devices, since it makes it possible to generate a large amount of aerosol having advantageous organoleptic properties.
• the reconstituted tobacco must comprise a minimal amount of aerosol-generating agent to generate a satisfactory amount of aerosol.
• the reconstituted tobacco disclosed in U.S. Pat. No. 3,145,717 comprises only 3% by weight of solids of aerosol-generating agent.
• the amount of aerosol generated by this reconstituted tobacco and the nicotine transfer rate of this reconstituted tobacco in a heating device are too low to be satisfactory.
• the reconstituted plant sheet according to the invention has a nicotine transfer rate greater than a reconstituted plant sheet of lower density.
• the reconstituted plant sheet according to the invention advantageously forms an aerosol, the organoleptic properties of which are improved compared with an aerosol formed by a reconstituted plant sheet of lower density.
• a second subject of the invention is a process for producing a reconstituted plant sheet according to the invention, comprising the following steps:
• a third subject of the invention is a use of a reconstituted plant sheet according to the invention in a heating device, in particular a device for heating tobacco without burning it.
• the invention relates to a reconstituted plant sheet comprising:
• the density of the reconstituted plant sheet may be between 0.62 g/cm 3 and 1.50 g/cm 3 , in particular between 0.65 g/cm 3 and 1 g/cm 3 , more particularly between 0.66 g/cm 3 and 0.70 g/cm 3 .
• the density of the reconstituted plant sheet is calculated by dividing its basis weight by its thickness.
• the average thickness of the control parchment paper used to measure the thickness of the reconstituted plant sheet is measured (minimum of 6 measurements on a layer, on sites pinpointed on the paper),
• the reconstituted plant sheet sample is placed between 2 thicknesses of parchment paper,
• the calculated thickness of the reconstituted plant sheet is the average of the overall thickness measured (reconstituted plant sheets +2 sheets of parchment paper) from which is subtracted 2 times the average thickness of the parchment paper.
• the reconstituted plant sheet can have a basis weight of between 60 g/m 2 and 300 g/m 2 , in particular between 80 g/m 2 and 250 g/m 2 , most particularly between 90 g/m 2 and 200 g/m 2 , even more particularly between 140 g/m 2 and 190 g/m 2 .
• the reconstituted plant sheet can have a thickness of between 100 ⁇ m and 450 ⁇ m, in particular between 120 ⁇ m and 375 ⁇ m, most particularly between 140 ⁇ m and 325 ⁇ m.
• the reconstituted plant sheet can have a density of between 0.65 g/cm 3 and 1 g/cm 3 , a basis weight of between 90 g/m 2 and 200 g/m 2 and a thickness of between 140 ⁇ m and 325 ⁇ m.
• fibrous support denotes a base web comprising refined fibers of the plant, the base web typically being obtained by means of a papermaking process.
• the term “refined fibers of the plant” denotes fibers of the plant which have undergone a refining step enabling fibrillation and/or cutting of the fibers of the plant.
• the refining step is conventionally carried out in a papermaking process, such as the papermaking process producing reconstituted papermaking tobacco.
• the refining step is not carried out in a process producing cast leaf reconstituted tobacco such as the one disclosed in EP 0 565 360 and WO 2012/164009.
• the refined fibers of the plant may have a degree Schopper-Riegler (° SR) of from 15° SR to 75° SR, in particular of from 20° SR to 65° SR, more particularly of from 25° SR to 55° SR.
• ° SR degree Schopper-Riegler
• aerosol-generating agent denotes a compound which allows the formation of an aerosol when it is heated, for example in contact with hot air.
• S AG be the total content by weight of solids of the aerosol-generating agent included in the reconstituted plant sheet of the present invention.
• S AG may be between 14% and 27%, more particularly between 16% and 25%.
• the aerosol generated by a reconstituted plant sheet having a S AG greater than the ranges mentioned above causes unwanted burning of the mouth and/or the throat (phenomenon known as “hot puff”).
• the aerosol-generating agent may be a polyol, a non-polyol or a mixture thereof.
• a generating agent that is a polyol may be sorbitol, glycerol, propylene glycol, triethylene glycol or a mixture thereof.
• a 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 is glycerol, propylene glycol, or a mixture of glycerol and propylene glycol, glycerol being preferred.
• An aerosol is generated during heating of the reconstituted plant sheet of the invention.
• the plant extract which comprises aromatic compounds confers aromas from the plant on this aerosol.
• plant extract denotes all of the water-soluble products of the plant.
• the plant extract comprises nicotine, and the compounds conferring organoleptic properties and/or therapeutic properties on the aerosol.
• the organoleptic properties and the therapeutic properties of the aerosol formed by heating said reconstituted plant sheet may depend on the content by weight of solids of the plant extract included in the reconstituted plant sheet of the present invention.
• the total content by weight of solids of the plant extract depends on the plant used and, more particularly, on the content of aromatic compounds or of compounds having therapeutic properties of the plant used.
• S P be the total content by weight of solids of the plant extract included in the reconstituted plant sheet of the present invention.
• S P may be between 20% and 45%, in particular between 25% and 40%, more particularly between 27% and 36%.
• the reconstituted plant sheet to be analyzed is ground in order to achieve a particle size of less than or equal to 1 mm.
• the reconstituted plant sheet is then mixed with boiling water for 45 minutes in order to extract all of the plant extract.
• S P is calculated by the difference between the dry weight of the sample of reconstituted plant sheet to be analyzed and the dry weight of the fibrous residue after extraction.
• the sum of the total content by weight of the solids of plant extract and of the total content by weight of solids of aerosol-generating agent, S P +S AG may be between 40% and 70%, in particular between 45% and 65%, more particularly between 50% and 60%.
• the ratio between the total content by weight of solids of plant extract and the total content by weight of solids of aerosol-generating agent, S P /S AG is between 1.0 and 2.0, in particular between 1.10 and 1.80, more particularly between 1.15 and 1.70.
• the reconstituted plant sheet can have an S AG of between 16% and 25%, an S P of between 27% and 35%, and an S P +S AG of between 50% and 60%.
• the reconstituted plant sheet can have a density of between 0.65 g/cm 3 and 1 g/cm 3 , a basis weight of between 90 g/m 2 and 200 g/m 2 and a thickness of between 140 ⁇ m and 325 ⁇ m, an S AG of between 16% and 25%, an S P of between 27% and 35%, and an S P +S AG of between 50% and 60%.
• the plant fibers and the plant extract can be independently obtained from a plant chosen from spore-producing plants, seed-producing plants or a mixture thereof.
• the plant may be a plant chosen from the tobacco plant, food plants, aromatic plants, fragrant plants, medicinal plants, plants of the family Cannabaceae, or a mixture thereof.
• the plant is the tobacco plant.
• the aerosol generated by heating the reconstituted plant sheet may also have therapeutic properties so that the reconstituted plant sheet can be used for a therapeutic treatment.
• a plant extract obtained from a plant mixture makes it possible to offer a broad panel of organoleptic properties and/or therapeutic properties.
• a plant mixture also makes it possible to counteract the unpleasant organoleptic properties of a plant of the mixture, for example a medicinal plant, with the pleasant organoleptic properties of another plant of the mixture, for example the tobacco plant, an aromatic plant or a fragrant plant.
• the plant fibers can be obtained from a first plant and the plant extract can be obtained from a second plant.
• the fibers of a plant may not have mechanical properties which allow the formation of a fibrous support, but the extract of this plant may confer desired organoleptic properties and/or therapeutic properties on the aerosol.
• the fibers of a plant may have mechanical properties which allow the formation of a fibrous support, but the extract of this plant may not confer desired organoleptic properties and/or therapeutic properties on the aerosol.
• mixing plants to obtain the plant fibers makes it possible to adjust the mechanical properties of the reconstituted plant sheet and/or the organoleptic or chemical properties of the aerosol.
• the tobacco fibers and the tobacco extract can be obtained from any tobacco plant or tobacco type plant, for example Virginia tobacco, Burley tobacco, air-cured tobacco, dark air-cured tobacco, Orient tobacco, sun-cured tobacco, fire-cured tobacco, or a mixture thereof.
• the food plants are garlic, coffee, ginger, licorice, rooibos, Stevia rebaudiana, tea, cacao tree, chamomile, mate, star anise, fennel, citronella.
• the aromatic plants are basil, turmeric, clove, laurel, oregano, mint, rosemary, sage, thyme.
• the fragrant plants are lavender, rose, eucalyptus.
• the medicinal plants are those indicated in the document, list A of traditionally used medicinal plants (French pharmacopeia January 2016, published by the influence Nationale de Sécurotti du Medicament (ANSM) [French National Agency for Drug and Health Product Safety] or plants known to comprise compounds which have therapeutic properties.
• the medicinal plants listed are ginkgo, ginseng, sour cherry, peppermint, willow and red vine.
• eucalyptus is among the medicinal plants known to comprise compounds which have therapeutic properties.
• the plant fibers and the plant extract of the reconstituted plant sheet of the present invention may be derived from various plant parts, the plant parts being parts of the plant itself or the result of the processing of various plant parts.
• the plant parts may be whole parts of the plant or debris originating from threshing or mixing and shredding the plant parts.
• the plant parts may be selected from the plant parts richest in aromatic compounds conferring on the aerosol its organoleptic properties.
• these parts may be the whole plant, the aerial plant parts, 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 flower head, 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 mechanical-chemical processing of one or more plant parts, such as for example the shell protecting the cacao bean resulting from the bean dehulling process.
• the tobacco plant parts may be the parts richest in aromatic compounds conferring on the aerosol its organoleptic properties.
• the tobacco plant parts may be the parenchyma (lamina) optionally with added stems of the tobacco plant.
• the tobacco plant parts may be the leaves of the tobacco plant or the debris originating from threshing or mixing and shredding the leaves and veins of the tobacco plant into scaferlati (cut tobacco).
• the garlic bulb, the coffee cherry, the star anise fruit, the rhizome of ginger, the licorice root and the leaves of rooibos, Stevia rebaudiana or tea may for example be selected as parts.
• clove flower buds the cloves
• basil the laurel and sage leaves
• mint oregano
• rosemary and thyme leaves and flower head or the turmeric rhizome
• turmeric rhizome may for example be selected as parts.
• the lavender flower and flower head, or the rose flower bud and petals may be selected.
• the reconstituted plant sheet can have a density of between 0.65 g/cm 3 and 1 g/cm 3 , a basis weight of between 90 g/m 2 and 200 g/m 2 and a thickness of between 140 ⁇ m and 325 ⁇ m, an S AG of between 16% and 25%, an S P of between 27% and 35%, and an S P +S AG of between 50% and 60% and the plant is the tobacco plant.
• Cellulose-based plant fibers are fibers obtained by means of a chemical or mechanical or thermomechanical cooking process, such as wood pulp, hemp, or annual plants such as flax for example. A mixture of these cellulose-based plant fibers may also be used.
• these cellulose-based plant fibers can improve the mechanical strength properties of the reconstituted plant sheet.
• the fibrous support is produced using a papermaking process.
• a reconstituted plant sheet according to the invention is a reconstituted plant sheet that can be obtained by means of a papermaking process.
• the plant fibers of the fibrous support and the plant extract are obtained in accordance with the following steps:
• the plant fibers may be refined in a refiner and then passed through the papermaking machine so as to constitute the fibrous support.
• the plant extract may be an extract of various plants.
• the plant extract can be concentrated before being brought into contact with the fibrous support during step b).
• a device such as a vacuum evaporation device can be used to concentrate the plant extract.
• the plant extract and the aerosol-generating agent can be brought into contact with the fibrous support one after the other, or can be mixed so as to be brought into contact with the fibrous support together.
• step b) of bringing the plant extract into contact can be carried out by impregnation or by spraying, in particular by impregnation.
• the impregnation can be carried out by means of a size press.
• the drying step c) can be carried out by infrared ramp, American battery drying drums, hot-air drying in a tunnel drier, a vertical drier, a fluidized-bed drier, a pneumatic drier, in particular in a tunnel drier.
• the reconstituted plant sheet of the invention may be used in a device for heating tobacco without burning it.
• the invention relates to a use of a reconstituted plant sheet as defined above, in a heating device, in particular a device for heating tobacco without burning it.
• the term “device for heating tobacco without burning it” denotes any device which allows the formation of an aerosol intended to be inhaled by a consumer.
• the aerosol replaces the smoke, thus allowing the user to inhale the plant aromas while at the same time very significantly reducing his or her exposure to the harmful constituents.
• a heating device comprises, in the direction of the air flow, an air inlet, a heating body, a lodging intended to put in place and hold the reconstituted plant sheet of the invention comprising the generating agent, and an air outlet intended to be introduced into the mouth of the user.
• the air inlet, the heating body, the lodging and the air outlet are typically connected at least fluidically to one another.
• the heating device there is no combustion of the sheet.
• the user can therefore take advantage of the organoleptic properties of the plant, and optionally of the tobacco, while at the same time very significantly reducing their exposure to the harmful constituents.
• a mixture of scraps and stems of tobacco of Virginia type is brought into contact with water at 65° C. with stirring for 45 minutes.
• the tobacco extract is separated from the fibrous portion by mechanical pressing.
• the tobacco extract is concentrated under vacuum to a solids concentration of 54%.
• Glycerol as aerosol-generating agent, is added to the concentrated tobacco extract.
• the tobacco fibers are refined to have a degree Schopper-Riegler of 55° SR and then passed to a laboratory papermaking machine so as to constitute a fibrous support which has a basis weight of approximately 77 g/m 2 .
• the concentrated tobacco extract comprising glycerol is brought into contact with the fibrous support by impregnation in a size press to produce the reconstituted tobacco sheet in order to obtain an S P of 27.3%, an S AG of 23.7% and a sum S AG +S P of 51% in the reconstituted tobacco sheet produced.
• This sheet has a density of 0.68 g/cm 3 , a basis weight of 145 g/m 2 and a thickness of 212 ⁇ m.
• Another reconstituted tobacco sheet is produced according to the method described above, the differences being that: it is a mixture of strips and stems of tobacco of Virginia type that is used, the degree Schopper-Riegler is 25° SR, the basis weight of the fibrous support is approximately 78 g/m 2 , S AG is 20.7%, S P is 30.8% and the sum S AG +S P is equal to 51.5%.
• This sheet has a density of 0.69 g/cm 3 , a basis weight of 156 g/m 2 and a thickness of 226 ⁇ m.
• Another reconstituted tobacco sheet is produced according to the method described above, the differences being that: it is a mixture of strips and stems of tobacco of Virginia type that is used, the degree Schopper-Riegler is 25° SR, the basis weight of the fibrous support is approximately 63 g/m 2 , S AG is 21.1%, S P is 35.4% and the sum S AG +S p is equal to 56.5%.
• This sheet has a density of 0.61 g/cm 3 , a basis weight of 129 g/m 2 and a thickness of 186 ⁇ m.
• This reconstituted tobacco sheet has a density of less than 0.6 g/cm 3 , a basis weight of 95 g/m 2 and a thickness of 166 ⁇ m.
• the nicotine transfer rate of the reconstituted tobacco sheet 1 in accordance with the invention and of the reconstituted tobacco sheet not in accordance with the invention is determined with a heating system of gloTM type and according to the following protocol.
• the nicotine transfer rate in a reconstituted tobacco sheet is calculated by dividing the nicotine content in the aerosol, generated by heating said reconstituted tobacco sheet, by the nicotine content in said reconstituted tobacco sheet.
• the tobacco sheet in accordance with the invention and a tobacco sheet not in accordance with the invention are cut into scaferlati (cut tobacco) and then smoked, one after the other, by an independent expert in a gloTM heating system.
• all the aerosols formed during the smoking of the tobacco sheet in accordance with the invention have very satisfactory organoleptic properties, in particular the aerosol is not very bitter, not very irritant, not very aggressive and has a good round and balanced taste which is superior to the aerosols formed during the smoking of the tobacco sheet not in accordance with the invention.

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• Chemical & Material Sciences (AREA)
• Chemical Kinetics & Catalysis (AREA)
• General Chemical & Material Sciences (AREA)
• Health & Medical Sciences (AREA)
• General Health & Medical Sciences (AREA)
• Toxicology (AREA)
• Life Sciences & Earth Sciences (AREA)
• Agronomy & Crop Science (AREA)
• Botany (AREA)
• Manufacture Of Tobacco Products (AREA)
• Pretreatment Of Seeds And Plants (AREA)

Applications Claiming Priority (3)

Publications (1)

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ID=67810862

Family Applications (1)

Country Status (9)

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Family Cites Families (11)

• 2019
  • 2019-05-07 FR FR1904782A patent/FR3095739B1/fr active Active
• 2020
  • 2020-05-07 US US17/608,791 patent/US20220273018A1/en active Pending
  • 2020-05-07 CN CN202080032213.6A patent/CN113784632A/zh active Pending
  • 2020-05-07 EP EP20723867.6A patent/EP3965596A1/en active Pending
  • 2020-05-07 JP JP2021566291A patent/JP2022531918A/ja active Pending
  • 2020-05-07 AU AU2020267871A patent/AU2020267871A1/en active Pending
  • 2020-05-07 WO PCT/EP2020/062779 patent/WO2020225388A1/en unknown
  • 2020-05-07 KR KR1020217040027A patent/KR20220005578A/ko unknown
  • 2020-05-07 CA CA3135252A patent/CA3135252A1/en active Pending

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