EP4340644A1 - Verfahren zum einbringen von additiven in aerosolerzeugende substrate und daraus hergestellte produkte - Google Patents

Verfahren zum einbringen von additiven in aerosolerzeugende substrate und daraus hergestellte produkte

Info

Publication number
EP4340644A1
EP4340644A1 EP22727461.0A EP22727461A EP4340644A1 EP 4340644 A1 EP4340644 A1 EP 4340644A1 EP 22727461 A EP22727461 A EP 22727461A EP 4340644 A1 EP4340644 A1 EP 4340644A1
Authority
EP
European Patent Office
Prior art keywords
aerosol
additive
producing
weight
filler
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Pending
Application number
EP22727461.0A
Other languages
English (en)
French (fr)
Inventor
Rama JUDE
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
SWM Luxembourg SARL
Original Assignee
SWM Luxembourg SARL
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by SWM Luxembourg SARL filed Critical SWM Luxembourg SARL
Publication of EP4340644A1 publication Critical patent/EP4340644A1/de
Pending legal-status Critical Current

Links

Classifications

    • A—HUMAN NECESSITIES
    • A24—TOBACCO; CIGARS; CIGARETTES; SIMULATED SMOKING DEVICES; SMOKERS' REQUISITES
    • A24B—MANUFACTURE OR PREPARATION OF TOBACCO FOR SMOKING OR CHEWING; TOBACCO; SNUFF
    • A24B15/00—Chemical features or treatment of tobacco; Tobacco substitutes, e.g. in liquid form
    • A24B15/18—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
    • A24B15/303—Plant extracts other than 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
    • A24B13/00—Tobacco for pipes, for cigars, e.g. cigar inserts, or for cigarettes; Chewing tobacco; Snuff
    • 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
    • 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
    • A24B15/186—Treatment of tobacco products or tobacco substitutes by coating with a coating composition, encapsulation of tobacco particles
    • 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
    • A24B15/281—Treatment of tobacco products or tobacco substitutes by chemical substances the action of the chemical substances being delayed
    • A24B15/283—Treatment of tobacco products or tobacco substitutes by chemical substances the action of the chemical substances being delayed by encapsulation of the chemical substances
    • 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
    • A24B15/301—Treatment of tobacco products or tobacco substitutes by chemical substances by organic substances by aromatic compounds

Definitions

  • THC tetrahydrocannabinol
  • CBD cannabidiol
  • the present disclosure is directed to a method for incorporating an additive into an aerosol-producing material, such as a filler, that is well suited for use in smoking articles, heat but not burn sticks, and the like.
  • the method of the present disclosure is generally directed to a vacuum infusion method that is capable of achieving 100% or more application efficiency without any losses of the additive and in a very short amount of time, such as less than ten minutes.
  • the infusing liquid does not change significantly in additive concentration after the infusion process. Consequently, the infusing liquid can be re-used in multiple infusion processes until it is completely consumed leading to zero waste.
  • the present disclosure is directed to a process for incorporating an additive into an aerosol-producing filler.
  • the process includes combining the aerosol-producing filler with an infusing liquid.
  • the infusing liquid comprises the additive dissolved in a solvent.
  • the solvent for instance, can be an alcohol or acetone.
  • the solvent is ethanol.
  • the aerosol-producing filler and infusing liquid mixture are subjected to pressures sufficient to cause the additive to infuse into the aerosol-producing filler. After infusion, the aerosol-producing filler is dried causing the solvent to evaporate and leaving behind the additive uniformly dispersed within the material.
  • the infusing liquid can be re-used in further infusion processes.
  • the additive concentration in the infusing liquid does not change by more than about 5% between each infusing cycle.
  • the infusing liquid can be subjected to multiple infusing cycles with new substrate until the infusing liquid is completely consumed.
  • the process of the present disclosure can be used to incorporate all different types of additives into the aerosol-producing filler.
  • the additive can be a cannabinoid.
  • the additive can be cannabidiol.
  • Other cannabinoids that can be incorporated into the aerosol- producing filler include cannabichromene, cannabinol, cannabigerol, tetrahydrocannabivarin, cannabidivarin, cannabidiolic acid, or mixtures thereof.
  • the additive can be tetrahydrocannabinol.
  • Exemplary additives include a sugar, a licorice extract, honey, a coffee extract, maple syrup, a tea extract, a botanical extract, a plant extract, a tobacco extract, or a fruit extract.
  • the additive can also comprise one or more terpenes.
  • the process of the present disclosure is not only efficient but can incorporate additives into the aerosol-producing filler in relatively great amounts.
  • the additive such as a cannabinoid
  • the aerosol-producing filler in an amount greater than about 3.1% by weight, such as in an amount greater than about 3.3% by weight, such as in an amount greater than about 3.5% by weight, and generally less than about 70% by weight, such as less than about 50% by weight.
  • the aerosol-producing filler treated in accordance with the present disclosure can comprise any suitable material.
  • the aerosol-producing material can be a tobacco, a cannabis material, a botanical material, or mixtures thereof.
  • the aerosol-producing material can also comprise a reconstituted material made from any of the plant materials described above.
  • the process of the present disclosure can be used to incorporate a cannabinoid, such as cannabidiol, into a tobacco and/or hemp material.
  • the aerosol-producing filler is immersed or submerged in the infusing liquid. After being subjected to a pressure sufficient to cause the additive to infuse into the aerosol-producing filler, the aerosol-producing filler can be dried.
  • the additive can be incorporated into the aerosol- producing filler without the use of an oil.
  • the resulting aerosol- producing filler can be oil-free.
  • the present disclosure is also directed to an aerosol-producing material containing an additive.
  • the aerosol-producing material comprises an aerosol- producing filler comprising a strip, strips, shreds, or mixtures thereof.
  • an additive is infused into the aerosol- producing filler and may comprise, for instance, a cannabinoid, such as cannabidiol.
  • the additive can be present in the aerosol-producing filler in an amount greater than about 3.1% by weight, such as in an amount greater than about 15% by weight, such as in an amount greater than about 30% by weight, such as in an amount greater than about 50% by weight, such as in an amount greater than about 70% by weight.
  • the aerosol-producing filler can comprise a tobacco or a cannabis.
  • Figure 1 is a cross-sectional view for exemplary purposes only illustrating an aerosol-producing filler being treated in accordance with the present disclosure
  • Figure 2 is a perspective view of an aerosol-producing filler made in accordance with the present disclosure
  • Figure 3 is a perspective view of one embodiment of a smoking article incorporating the wrapper of the present disclosure
  • Figure 4 is an exploded view of the smoking article illustrated in Figure 1.
  • a “reconstituted plant material” refers to a material formed by a process in which a plant feed stock, such as cocoa shells, tobacco or reconstituted tobacco, herbal plants, cannabis and/or hemp, for example, is extracted with a solvent to form an extract of solubles, such as water solubles, and an extracted insoluble portion or residue comprising fibrous material.
  • the extracted and insoluble fibrous material is then formed into a sheet or web through any suitable process and the extract may either be discarded or reapplied to the formed sheet.
  • the extract can be fed through various processes for concentrating the extract and optionally removing or adding various components prior to being recombined with the fibrous material.
  • the reconstituted material is formed from extracted plant fiber fibers optionally combined with web building fibers, such as delignified cellulose fibers.
  • the extract of solubles obtained from the plant fiber fibers is optionally reapplied to the sheet.
  • an “aerosol-producing material” is meant to include both a combustible material that undergoes combustion in a smoking article and to an aerosol-forming material that is heated but not combusted to form an inhalable aerosol.
  • Combustible smoking articles can include cigarettes, cigarillos and cigars.
  • the aerosol-producing material is generally surrounded by a wrapping material to form a smokable rod, but may also be included in the wrapping material itself.
  • Aerosol-producing devices for generating an aerosol include, for instance, devices in which an aerosol is generated by electrical heating or by the transfer of heat from a combustible fuel element or heat source to heat but not burn the aerosol generating material, which releases volatile compounds. As the released compounds cool, they condense to form an aerosol that is inhaled by the consumer.
  • the aerosol-producing material is a filler that can be in the form of a strip, strips, shreds, or mixtures thereof.
  • cannabis may refer to any variety of the Cannabis plant, such as Cannabis sativa or Cannabis indica, for instance. More particularly, the present disclosure may refer to leaves, stems, seeds and flowers or any other part of the Cannabis plant, as cannabis. Nonetheless, cannabis, as referred to herein, includes cannabis that contains average or high levels of THC and/or CBD (usually known as marijuana), hemp, which may contain low, or very low, levels of THC, industrial hemp, which may refer to a cannabis plant that contains less than 0.3% THC, or combinations thereof.
  • THC and/or CBD usually known as marijuana
  • hemp which may contain low, or very low, levels of THC
  • industrial hemp which may refer to a cannabis plant that contains less than 0.3% THC, or combinations thereof.
  • extracted plantfibers such as extracted hemp fibers, tobacco fibers or the like refer to plant fibers that have been subjected to an extraction process in which the plant fibers has been contacted with an aqueous solution to remove water soluble components contained in the fibers.
  • the extraction process is different from a delignification process and from a bleaching treatment.
  • delignified cellulosic fibers refers to fibers that have been subjected to a pulping or delignification process by which the cellulose fibers are separated from the plant material through chemical means, mechanical means, or through a combination of chemical and mechanical means.
  • the term “refine” is used to mean that the plant material is subjected to a mechanical treatment that modifies the fibers of the material so that they are better suited to forming a fibrous sheet or substrate. Refining can be accomplished using a conical refiner, a disk refiner or a Valley beater. The mechanical process exerts an abrasive and bruising action on the plant material such that the plant material is deformed and declustered. Refining is a different process than delignification and pulping.
  • the “amount of water soluble extracts” present in a substrate or reconstituted plant material or in an aerosol generating material is determined by placing 5 grams of a sample in boiling distilled water for 10 minutes to obtain an extract containing water soluble components. The weight of dry matter of the extract that is soluble in the solvent is calculated by the difference between the dry weight of the sample and the dry weight of the sample after extraction. The difference in dry weight is then used to determine the percentage of water soluble extracts in the sample.
  • the present disclosure is generally directed to a process for incorporating additives into aerosol-producing substrates, such as aerosol- producing fillers that are used in smoking articles, heat but not burn sticks, and the like.
  • one or more additives are infused into the aerosol-producing substrate while under vacuum or being subjected to reduced pressures.
  • the additive can be a flavoring, a casing, a terpene, a pharmaceutical agent, an aroma agent, or the like.
  • the additive is a cannabinoid, such as a cannabinoid that can be extracted from cannabis or hemp plants.
  • the cannabinoid in one aspect, can be cannabidiol (CBD).
  • the process of the present disclosure offers various advantages and benefits.
  • the process is well suited to incorporating an additive into an aerosol-producing substrate in a uniform manner.
  • the concentration of the additive throughout the aerosol-producing substrate can be relatively the same and exhibit concentration variations of less than about 5%, such as less than about 2%, such as less than about 1%, such as less than about 0.25% by weight.
  • the process of the present disclosure is also very efficient.
  • Additives can be incorporated into aerosol-producing substrates not only uniformly but very quickly. For example, in one embodiment, the process can take less than about 15 minutes, such as less than about 10 minutes, such as even less than about 5 minutes in order to incorporate the additive into the material.
  • the process of the present disclosure also allows for precise control over the amount of additive incorporated into the aerosol-producing substrate.
  • the additive concentration within the resulting material can be easily adjusted and controlled according to the process with a high degree of efficacy, especially in relation to conventional methods where additives were simply sprayed onto the material.
  • additives can be incorporated into the aerosol-producing substrate without waste.
  • Many additives, for instance, are relatively expensive and various benefits are obtained if waste is minimized.
  • the infusing liquid containing the additive in one embodiment, does not significantly change in additive concentration after the infusion process. Consequently, infusing liquid left over from an infusion can be re-used in a new infusion process without any modifications. In this manner, the infusing liquid can be used in multiple infusion cycles until completely exhausted. The additive added to the infusing liquid is completely consumed, ending up in the final product.
  • the number of infusion cycles needed to consume the infusing liquid can depend on various factors. For example, an infusing liquid can be re-used in from about 3 to about 8 different infusing cycles in one embodiment.
  • the process of the present disclosure involves contacting an aerosol-producing material with an infusing liquid that contains an additive.
  • the resulting liquid and solid mixture is then subjected to reduced pressures that cause the infusing liquid to impregnate or infuse into the aerosol-producing material.
  • reduced pressures For example, by reducing the pressure, air and other gases contained within the aerosol-producing material are displaced by the infusing liquid.
  • the aerosol- producing material is then dried in order to remove any solvents leaving behind the additive contained within the aerosol-producing material.
  • a degassing chamber 30 contains an aerosol-producing material or filler 12.
  • the aerosol-producing filler 12 can be, for instance, derived from one or more plants.
  • the aerosol-producing filler 12 is immersed or submerged within an infusing liquid 32.
  • the infusing liquid 32 contains an additive that is to be incorporated into the aerosol-producing filler 12.
  • the infusing liquid 32 can contain various different components depending upon the particular application and the desired result.
  • the infusing liquid 32 includes one or more additives dissolved in a solvent.
  • the solvent for instance, can be a liquid having a relatively low boiling point.
  • the solvent can have a boiling point of less than about 120°C, such as less than about 100°C, such as less than about 80°C, such as less than about 60°C.
  • the boiling point of the solvent is generally greater than about 40°C.
  • solvents that can be used include one or more alcohols, acetone, or mixtures thereof. In one particular embodiment, the solvent is ethanol.
  • the additive contained in the infusing liquid can vary depending upon the particular application.
  • the additive can be dissolved in the infusing liquid. After infusion, the solvent can be evaporated from the aerosol generating filler 12 leaving the additive within the material.
  • the additive can be a liquid that is miscible or immiscible within the solvent.
  • the additive for instance, can be a liquid having a higher boiling point than the solvent.
  • the solvent can be evaporated from the aerosol-producing filler leaving behind the additive.
  • additives that can be incorporated into the aerosol- producing filler include flavorings, casings, pharmaceutical agents, aroma agents, and mixtures thereof.
  • the additive can be derived from cannabis plants.
  • the additive can be a cannabinoid.
  • Cannabinoids that can be incorporated into the aerosol-producing filler of the present disclosure include cannabidiol (CBD) and tetrahydrocannabinol (THC).
  • CBD cannabidiol
  • THC tetrahydrocannabinol
  • CBD also interacts with pain receptors in the brain but does not create the same euphoric feeling caused by THC.
  • THC can be applied to the aerosol-producing filler of the present disclosure
  • CBD can be applied to the aerosol-producing filler or, alternatively, both THC and CBD can be applied to the aerosol-producing filler.
  • cannabinoids can also be incorporated into an infusing liquid and applied to the aerosol-producing filler in accordance with the present disclosure.
  • cannabinoids contained in cannabis include cannabichromene, cannabinol, cannabigerol, tetrahydrocannabivarin, cannabidivarin, cannabidiolic acid, other cannabidiol derivatives, and other tetrahydrocannabinol derivatives.
  • the above cannabinoids can be used singularly or in any combination and applied to the aerosol-producing filler.
  • the cannabinoid can be a solid that is dissolved in a solvent to form the infusing liquid.
  • cannabidiol particles can be dissolved in ethanol.
  • the particles dissolved in the solvent can be relatively small in order to facilitate the formation of a solution.
  • the additive particles can have an average particle size of less than about 2 microns, such as less than about 1 micron, such as less than about 0.5 microns, such as less than about 0.1 micron.
  • the average particle size for instance, can generally be greater than about 20 nm, such as greater than about 50 nm.
  • the infusing liquid only contains a solvent and the additive dissolved in the solvent.
  • the additive can be combined with the solvent in conjunction with other components.
  • the additive such as a cannabinoid
  • the emulsion can contain one or more emulsifiers and water.
  • Emulsifiers that may be used include esters of fatty acids, such as triglycerides.
  • Other emulsifiers that may be used include one or more polysorbates.
  • the polysorbate may be polyoxyethylene (20) sorbitan monooleate.
  • the infusing liquid is formulated to be oil-free.
  • the infusing liquid can be free of hydrocarbon oils.
  • Oils that can be absent from the infusing liquid include animal oils, vegetable oils, and/or petroleum-derived oils.
  • oils can include, for instance, cannabis oil, olive oil, sunflower oil, corn oil, essential oils, coconut oil, almond oil, black seed oil, and the like.
  • the above oils may be present and infused into the substrate.
  • additives can also be incorporated into the aerosol-producing filler.
  • other additives that can be incorporated into the filler include nicotine, corn syrup, sugars, licorice extracts, menthol, honey, coffee, maple syrup, tobacco extracts, botanical extracts, plant extracts, tea, fruit extracts, flavorings such as clove, anise, cinnamon, sandalwood, geranium, rose oil, vanilla, caramel, cocoa, lemon oil, cassia, spearmint, fennel, or ginger, fragrances or aromas such as cocoa, vanilla, and caramel, medicinal plants, vegetables, spices, roots, berries, bar, seeks, essential oils and extracts thereof, such as anise oil, clove oil, carvone and the like, artificial flavoring and fragrance materials such as vanillin, and mixtures thereof.
  • Another additive that can be incorporated into the aerosol-producing filler is one type of flavoring known as a terpene and/or a terpenoid.
  • a terpene or a blend of terpenes, for instance, can be used to develop desirable aromas and indicate to the user the quality of the product.
  • One or more terpenes can also improve the sensory reaction to inhaling an aerosol created by the aerosol- producing filler.
  • terpenes can be applied to the aerosol-producing filler.
  • terpenes include but are not limited to pinene, humulene, b-caryophyllene, isopulegol, guaiol, nerylacetate, neomenthylacetate, limonene, menthone, dihydrojasmone, terpinolene, menthol, phellandrene, terpinene, geranylacetate, ocimene, myrcene, 1,4-cineole, 3-carene, linalool, menthofuran, perillyalcohol, pinane, neomenthylaceta, alpha-bisabolol, borneol, camphene, camphor, caryophyllene oxide, alpha-cedrene, beta-eudesmol, fenchol, geraniol, isoborneol, n
  • various different terpenes can be blended together in order to mimic the ratios of terpenes found in natural cannabis plants. For instance, from about 2 to about 12 terpenes can be blended together and applied to the aerosol-producing filler.
  • Exemplary blends of terpenes include alpha-pinene, beta-caryophyllene, and beta-pinene; alpha-humulene, alpha-pinene, beta-caryophyllene, beta-pinene, and guaiol; beta-caryophyllene, beta-pinene, and d-limonene; beta-caryophyllene, beta-pinene, and nerolidol; beta-caryophyllene, beta-pinene, d-limonene, and terpinolene; alpha-bisabolol, alpha-pinene, beta-caryophyllene, beta-myrcene, beta-pinena, and d-limonene; beta-caryophyllene, beta-pinena, and p-cymene; alpha-humulene, beta-caryophyllene, beta-pinene, d-limonene
  • the infusing liquid 32 is combined with the aerosol-producing filler 12. As shown in FIG. 1, the aerosol-producing filler 12 can be completely submerged within the infusing liquid 32. The liquid and filler mixture is then subjected to reduced pressures that cause the liquid to infuse and impregnate the aerosol-producing filler 12.
  • the aerosol-producing filler 12 and infusing liquid 32 can be placed in a degassing chamber 30.
  • the degassing chamber 30 can include a vessel 34 that communicates with a lid 36.
  • the lid 36 can form a gas tight seal with the vessel 34.
  • the degassing chamber 30 is also in communication with a vacuum pump 38 that is designed to remove gases from the vessel 34 for subjecting the aerosol- producing filler 12 and the infusing liquid 32 to reduced pressures.
  • the infusing liquid and filler mixture are added to the degassing chamber 30 and sealed.
  • the vacuum pump 38 is then designed to reduce the pressure within the vessel 34.
  • the vacuum pump 38 is used to maintain an atmosphere within the vessel 34 at a pressure of less than about 700 mmHg, such as less than about 650 mmHg, such as less than about 600 mmHg, such as less than about 550 mmHg, such as less than about 500 mmHg, such as less than about 450 mmHg.
  • the pressure can generally be greater than about 250 mmHg, such as greater than about 350 mmHg, such as greater than about 450 mmHg, such as greater than about 550 mmHg.
  • the pressure within the degassing chamber 30 during the process can be from about 600 mmHg to about 670 mmHg.
  • the infusing liquid and filler mixture can be subjected to lower pressures for a relatively short amount of time. For instance, the infusing process can take less than about an hour, such as less than about 30 minutes, such as less than about 20 minutes, such as less than about 10 minutes, such as less than about 8 minutes, such as less than about 5 minutes, such as even less than about 3 minutes.
  • the infusing time is generally greater than about 30 seconds, such as greater than about one minute.
  • the infusing process can occur at reduced pressure but at ambient temperature.
  • the infusing liquid 32 can be infused into the aerosol-producing filler 12 without having to use heat or subjecting the mixture to higher temperatures. Higher temperatures, for instance, can cause some additives to degrade.
  • the infusing process can occur at a temperature of less than about 50°C, such as less than about 40°C, such as less than about 30°C, and generally greater than about 10°C, such as greater than about 20°C.
  • the infusion process occurs at a temperature of from about 20°C to about 28°C.
  • the degassing chamber 30 can be restored to atmospheric pressure and the infusing liquid 32 and aerosol-producing filler 12 can be separated.
  • the infusing liquid 32 can be drained from the degassing chamber 30 using a liquid outlet 40.
  • the infused aerosol-producing filler 12 can then be removed from the degassing chamber 30 and dried.
  • the filler 12 can be removed from the degassing chamber 30 manually or using any suitable automated machinery or conveyor.
  • the infusing liquid 32 drained from the degassing chamber 30 can be reused on future batches of filler. For instance, as shown in FIG. 1, the infusing liquid drained from the degassing chamber 30 can be filtered if desired, combined with new infusing liquid if desired, and fed back to the degassing chamber 30 using the inlet 42.
  • the filler 12 can be dried using any suitable method or process.
  • the filler 12 can be air-dried or dried using heated air.
  • the temperature to which the filler 12 is heated during drying can depend upon the additive contained in the filler in order to prevent degradation.
  • the aerosol-producing filler 12 is conveyed through an oven and dried while being subjected to a temperature that does not degrade the additive or the filler.
  • the temperature for instance, in one embodiment, can be less than about 200°C, such as less than about 150°C.
  • the filler can be dried at a temperature of less than about 100°C, such as less than about 80°C.
  • the filler can be dried at a temperature of from about 23°C to about 45°C.
  • the amount of additive contained in the aerosol-producing filler 12 can vary depending upon various factors including the type of additive being incorporated into the filler and the desired result.
  • the amount of additive contained in the infusing liquid 32 can generally match the amount of additive incorporated into the aerosol-producing filler 12.
  • the aerosol-producing filler 12 can contain the additive after the infusion process at a concentration that is greater than the concentration of the additive in the infusing liquid.
  • the additive can be contained in the infusing liquid in an amount from about 0.01% by weight to about 90% by weight including all increments of 0.5% by weight therebetween.
  • the infusing liquid can contain the cannabinol in an amount greater than about 0.25% by weight, such as in an amount greater than about 0.5% by weight, such as in an amount greater than about 1% by weight, such as in an amount greater than about 1.5% by weight, such as in an amount greater than about 2% by weight, such as in an amount greater than about 2.5% by weight, such as in an amount greater than about 3% by weight, such as in an amount greater than about 3.5% by weight, such as in an amount greater than about 4% by weight, such as in an amount greater than about 5% by weight, such as in an amount greater than about 6% by weight, such as in an amount greater than about 8% by weight, such as in an amount greater than about 10% by weight, such as in an amount greater than about 15% by weight, such as in an amount greater than about 20% by weight, such as in an amount greater than about 30% by weight, such as in an amount greater than about 40% by weight,
  • the infusing liquid can contain one or more cannabinoids generally in an amount less than about 80% by weight, such as in an amount less than about 70% by weight, such as in an amount less than about 50% by weight, such as in an amount less than about 20% by weight, such as in an amount less than about 10% by weight.
  • the amount that one or more cannabinoids can be incorporated into the aerosol-producing filler, as described above, can generally have the same ranges as described above.
  • the resulting dried aerosol-producing filler can contain one or more cannabinoids in an amount generally greater than about 0.25% and generally in an amount less than about 80% by weight.
  • one or more cannabinoids can be incorporated into the aerosol- producing filler in an amount greater than about 3.1% by weight, such as in an amount greater than about 3.3% by weight, such as in an amount greater than about 3.5% by weight, such as in an amount greater than about 4% by weight, such as in an amount greater than about 10% by weight, such as in an amount greater than about 20% by weight, such as in an amount greater than about 30% by weight, such as in an amount greater than about 40% by weight, such as in an amount greater than about 50% by weight.
  • cannabinoids such as cannabidiol
  • the amount of flavoring or casing contained in the infusing liquid and contained in the resulting filler can generally be from about 0.05% by weight to about 70% by weight.
  • One or more terpenes can be incorporated into the aerosol- producing filler at relatively low amounts.
  • the infusing liquid and the resulting filler can contain one or more terpenes in an amount less than about 2% by weight, such as less than about 1.5% by weight, such as less than about 1 % by weight, such as less than about 0.5% by weight.
  • One or more terpenes can be incorporated into the filler, for instance, in an amount from about 0.1% by weight to about 1.2% by weight.
  • flavorings can be incorporated into the infusing liquid and into the resulting filler generally in an amount from about 0.1% by weight to about 70% by weight.
  • one or more flavorings can be incorporated into the filler in an amount greater than about 0.5% by weight, such as in an amount greater than about 1% by weight, such as in an amount greater than about 1.5% by weight, such as in an amount greater than about 2% by weight, and generally less than about 50% by weight, such as less than about 10% by weight.
  • the aerosol-producing filler 12 is shown in a dried state after the infusion process.
  • any suitable aerosol-producing filler can be treated in accordance with the present disclosure.
  • the aerosol-producing filler 12 can be made from one or more plants and, as shown in FIG. 2, can be in the form of a strip, strips, shreds, or mixtures thereof. Plants that can be used to form the filler 12 include tobacco, cannabis, botanical plants, mixtures thereof, and the like.
  • the filler 12 can be made from cut rag leaf, cast leaf, a reconstituted plant material, or mixtures thereof.
  • Tobacco materials for use in the present disclosure may include cut leaf tobacco, cast leaf tobacco, a reconstituted tobacco material, or mixtures thereof.
  • the tobacco material may include tobacco hurds, stalks, leaves, as well as scraps.
  • Cannabis materials for use in the present disclosure include hurds, buds, flowers, seeds, and any by-products of cannabis extraction, such as cannabis residues, THC, and CBD, and optionally stalk components.
  • the cannabis components are obtained from cannabis plants that have a relatively low THC and/or CBD content.
  • the amount of THC in the cannabis components can be less than about 1% by weight THC, such as less than about 0.3% by weight THC, such as less than about 0.2% by weight THC, such as less than about 0.1 % by weight THC.
  • Using cannabis components from low THC plants can offer various advantages and benefits. Selecting a cannabis material low in THC, for instance, allows for better control over THC deliveries when the THC is applied to the material.
  • a reconstituted material can be produced that contains no detectable amounts of THC so that the material can deliver other active agents, such as CBD, flavorants, nicotine, or the like.
  • the reconstituted cannabis material can be made from high THC or CBD containing plants, such as from the species Cannabis Indica or Cannabis Sativa.
  • the cannabis material (which can be a reconstituted material) of the present disclosure can be produced from various parts of the cannabis plant, including the hurds, leaves, buds, and flowers. These different parts of the plant can be combined in different ratios and amounts depending upon the particular application and the desired result.
  • the cannabis material can be made exclusively from cannabis leaves and hurds or can be made exclusively from cannabis buds and flowers, in one embodiment, the material is made from a mixture of leaves and hurds combined with buds and/or flowers.
  • the weight ratio between the leaves and hurds and the buds and/or flowers is from about 1:8 to about 8:1, such as from about 1:5 to about 5:1, such as from about 1:4 to about 4:1, such as from about 2:1 to about 1:2.
  • the ratio can be about 1:1.
  • the cannabis material may contain cannabis leaves and hurds in an amount greater than about 10% by weight, such as in an amount greater than about 20% by weight, such as in an amount greater than about 30% by weight, and generally in an amount less than about 70% by weight, such as in an amount less than about 60% by weight, such as in an amount less than about 50% by weight, such as in an amount less than about 40% by weight.
  • the cannabis material may contain buds and/or flowers in an amount greater than about 10% by weight, such as in an amount greater than about 20% by weight, such as in an amount greater than about 30% by weight, such as in an amount greater than about 40% by weight, such as in an amount greater than about 50% by weight, such as in an amount greater than about 60% by weight, and generally in an amount less than about 80% by weight, such as in an amount less than about 70% by weight, such as in an amount less than about 60% by weight, such as in an amount less than about 50% by weight.
  • an amount greater than about 10% by weight such as in an amount greater than about 20% by weight, such as in an amount greater than about 30% by weight, such as in an amount greater than about 40% by weight, such as in an amount greater than about 50% by weight, such as in an amount greater than about 60% by weight, and generally in an amount less than about 80% by weight, such as in an amount less than about 70% by weight, such as in an amount less than about 60% by weight, such as in an amount less than about 50% by weight.
  • the aerosol-producing filler 12 contains cocoa materials. Cocoa materials for use in the present disclosure are obtained from Theobroma cacao, which is also referred to as the cacao tree.
  • the cacao tree is in the evergreen family and is native to tropical regions.
  • the cacao tree produces a fruit, referred to as a cacao pod.
  • Cacao pods are generally yellow to orange in color and can weigh over one pound when ripe.
  • the pod contains anywhere from 10 to about 80 cocoa beans that are used to produce chocolate, juices, jelly, and the like.
  • the cocoa beans are dried and cured or fermented by being exposed to sunlight and/or ultraviolet light. Each individual bean is covered in a husk or shell. The husk or shell is removed from the bean prior to using the bean for producing food products.
  • the plant material of the present disclosure is made from the cocoa shells or husks, although other components of the cacao pod may also be used.
  • Other botanical plant materials for use in the present disclosure include herbs, plants and trees that may be used to form an aerosol-producing filler.
  • the materials may be obtained from a coffee tree or coffee bean, tea tree or tea leaf, vine, ginger, ginkgo, chamomile, tomato, ivy, mate, rooibos, cucumber, mint, a cereal such as wheat, barley or rye, or other trees such as broadleaved or resinous trees, and the like, as well as combinations thereof.
  • the filler 12 as shown in FIG. 2 is produced according to the present disclosure, various other components and ingredients can be added to the filler.
  • the filler can be combined with a humectant.
  • the humectant can be incorporated into the aerosol-producing filler for various different reasons in order to provide different benefits and advantages.
  • a humectant may be incorporated into the aerosol-producing filler in order to improve the processability and handling of the resulting fiber substrate.
  • a humectant can be added to the aerosol-producing filler in greater amounts so that the material is well suited for use in applications where the material is heated but not burned in order to produce an inhalable aerosol.
  • humectants can be incorporated into the aerosol- producing filler.
  • the humectant may comprise glycerol, propylene glycol, or mixtures thereof.
  • Other humectants that may be used include sorbitol, triethylene glycol, lactic acid, glyceryl diacetate, glyceryl triacetate, triethyl citrate, isopropyl myristate, and mixtures thereof including mixtures with glycerol and/or propylene glycol.
  • the amount of humectant applied to the aerosol- producing filler can depend upon various factors.
  • the humectant is present on the aerosol-producing filler in an amount less than about 5% by weight, such as in an amount less than about 3% by weight, and generally in an amount greater than about 0.5% by weight, such as in an amount greater than about 1% by weight.
  • the humectant may be present on the aerosol-producing filler in an amount greater than about 5% by weight, such as in an amount greater than about 10% by weight, such as in an amount greater than about 15% by weight, such as in an amount greater than about 20% by weight, and generally in an amount less than about 50% by weight, such as in an amount less than about 40% by weight, such as in an amount less than about 30% by weight, such as in an amount less than about 25% by weight.
  • the humectant When added to the aerosol-producing filler in an amount from about 10 to 40% by weight, such as in an amount from about 12 to about 30% by weight, such as in an amount from about 15 to about 25% by weight, the humectant serves as an aerosol generating agent that facilitates formation of an aerosol when the aerosol- producing filler is heated without being combusted.
  • the aerosol-producing filler of the present disclosure may also optionally contain filler particles.
  • Filler particles that may be incorporated into the aerosol- producing filler can be made from calcium carbonate, magnesium oxide, titanium dioxide, kaolin clay, barium sulfate, a silicate, bentonite, mica, or mixtures thereof.
  • Filler particles can optionally be incorporated into the aerosol-producing filler in an amount greater than about 1% by weight, such as in an amount greater than about 5% by weight, such as in an amount greater than about 10% by weight, and generally in an amount less than about 30% by weight, such as in an amount less than about 25% by weight, such as in an amount less than about 20% by weight, such as in an amount less than about 15% by weight.
  • the material can be used as an aerosol generating material for use in any suitable smoking article or in a device that heats but does not combust the material.
  • the smoking article shown in FIGS. 3 and 4 generally comprises a cigarette that may contain any filler discussed herein as all or part of the smokeable column 12.
  • the smoking article 10 includes a smokable column 12.
  • the smoking article 10 may also include a wrapping material 100 that defines an outer circumferential surface 16 when wrapped around the smokable column 12.
  • the article 10 may also include a filter 26 that may be enclosed by a tipping paper, however, depending upon the smokable column material, a filter may be optional or omitted.
  • Filler material made in accordance with the present disclosure can have a filling power of greater than about 4 cm 3 /g, such as greater than about 5 cm 3 /g, such as greater than about 6 cm 3 /g, and generally less than about 10 cm 3 /g, such as less than about 8 cm 3 /g.
  • the aerosol-producing filler can have excellent burn properties. For instance, the aerosol-producing filler can have a static burn rate of greater than about 4 mm/mm, such as greater than about 5 mm/mm, and generally less than about 8 mm/mm, such as less than about 7 mm/mm.
  • the aerosol-producing filler of the present disclosure can be used in all different types of aerosol generating products.
  • the aerosol generating material of the present disclosure can be formed into a smokable rod and surrounded by an outer wrapper as shown in FIGS. 3 and 4.
  • aerosol generating materials made according to the present disclosure can also include cigars and cigarillos.
  • the filler can be used in heat but not burn applications.
  • the aerosol-producing filler of the present disclosure can also be used to produce a snuff product and/or Shisha filles.
  • the snuff product can be a dry product or can contain substantial amounts of moisture.
  • the product when producing a snuff product, can be made exclusively from the aerosol-producing filler of the present disclosure or can be formed from the aerosol-producing filler of the present disclosure blended with other filler materials.
  • the aerosol-producing filler of the present disclosure is ground or cut to a desired size.
  • the particle size can be relatively small or can be made into strips depending upon the end use application.
  • the material is cut or ground so as to have an average particle size of greater than about 50 microns, such as greater than about 100 microns, and generally less than about 3 mm, such as less than about 2 mm.
  • the material can be ground into a powder or a granular material wherein the average particle size is less than about 100 microns.
  • the filler can be placed in an oral pouch that is intended for use in the oral cavity, such as by placing the pouch between the upper and lower gum of the lip or cheek.
  • the oral pouched product may have an oblong shape, such as a rectangular shape.
  • the total weight of the oral pouch can generally be in the range of from about 0.1 g to about 2.5 g, such as from about 0.2 g to about 0.8 g.
  • the pouch can be made of any suitable saliva-permeable pouch material, such as a nonwoven.
  • a binder may be included in the pouch to facilitate sealing of the material by ultrasonic welding.
  • the binder for instance, can be an acrylate polymer.
  • the pouch can be formed from a nonwoven material containing regenerated cellulose fibers, such as viscose rayon staple fibers and a binder. If desired, the pouch material may also contain additional flavoring agents and/or colorants.
  • a 2.5% by weight CBD isolate solution was combined with ethanol and then infused into a hemp filler.
  • the CBD particles contained in the solution had an average particle size of less than about 100 nm.
  • the 2.5% by weight CBD solution was diluted by a factor of 10 in ethanol to make a 100 mL solution with a concentration of 0.25% by weight CBD. The following process was followed in order to infuse the material into the hemp filler.
  • CBD solution 0.25% CBD solution
  • Hemp raw material had an average value of 0.27% of CBD.
  • CBD Isolate provided by CraftAg by dissolving 0.5 grams of CBD isolate in 5 ml_ of ethanol. This CBD Isolate was highly soluble in ethanol and it was used for all the infusion tests.
  • Two separate CBD solutions were prepared by dissolving 3 g of CBD isolate in 97 g of reagent alcohol to create a solution with a target concentration of 3% w/w.
  • CBD analyses were done on the solutions before they were used for the infusion and after they were used to see if there were any changes in the concentrations.
  • CBD content in hemp raw material measured to be 0.30%.
  • the CBD solution used to infuse hemp fillers had a concentration of 3.07%, confirming that the preparation procedure was accurate.
  • the average CBD % added to the infused hemp fillers was 3.40%. Since the CBD solution used for this infusion had a concentration of 3.07% CBD, this means the hemp fillers picked up 110.7% of the CBD in the solution.
  • the solution used to infuse tobacco fillers had a concentration of 3.10%.
  • the starting CBD solution was 3.10% CBD, and the average CBD% added to the infused tobacco fillers was 3.88%, this means the hemp fillers picked up 125.2% of the CBD in the original solution.
  • Table 2 Data showing the amount of CBD added to each sample of hemp filler, the average added concentration of 3.40% is more than the prepared solution of
  • Table 3 Data showing the amount of CBD added to each sample of tobacco filler, the average added concentration of 3.88% is more than the prepared solution of
  • CBD analyses were done on the solutions before they were used for the infusions and after they were used to see if there were any changes in the concentrations.
  • Average CBD content in hemp raw material measured to be 0.26%.
  • the solution used for the first hemp infusion showed to have a concentration of 3.62%, and the added CBD on the infused hemp filler had an average concentration of 3.40%, resulting in an average of 94.0% CBD added to hemp fillers when compared to the original solution.
  • the solution used for the second hemp infusion showed to have a concentration of 3.23%, and the added CBD on the infused hemp filler had an average concentration of 3.07%, resulting in an average of 95.0% CBD added to hemp fillers when compared to the original solution.
  • the CBD solution used to infuse tobacco fillers had a concentration of 3.29%.
  • the infused tobacco filler had an average concentration of 4.30%, resulting in an average of 130.7% CBD added to tobacco fillers when compared to the original solution.
  • Table 5 Data showing the amount of CBD added to each sample of tobacco filler, the average added concentration of 4.30% is more than the prepared solution at
  • Average CBD content in hemp raw material measured to be 0.32%.
  • the average CBD % added to the infused hemp filler from the two infusions was 3.85%, resulting in an average of 102.4% CBD added to hemp fillers when compared to the original solution of 3.77 % CBD.
  • the average CBD% added to the infused tobacco filler was 5.01 % from a solution of 4.35% CBD resulting in an average of 115.2% CBD added to tobacco fillers.
  • the average CBD% for the soaked hemp filler was 3.47% from a CBD solution of 4.35% CBD, resulting in an average of 79.8% CBD added to hemp fillers when compared to the original solution.
  • Table 7 Data showing the amount of CBD added to each sample of tobacco filler, the average added concentration of 5.01% is more than the prepared solution of
  • Table 8 Data showing the amount of CBD added to each sample of soaked hemp filler using 4.35% CBD solution the average added concentration of 3.47% is less than the prepared solution of 4.35%.

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EP22727461.0A 2021-05-21 2022-05-19 Verfahren zum einbringen von additiven in aerosolerzeugende substrate und daraus hergestellte produkte Pending EP4340644A1 (de)

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US10383358B2 (en) * 2017-06-14 2019-08-20 Digital Rarity Llc Cannabinoid containing cannabis extract infused into rolling paper
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