Classifications

• • A—HUMAN NECESSITIES
  • A24—TOBACCO; CIGARS; CIGARETTES; SIMULATED SMOKING DEVICES; SMOKERS' REQUISITES
  • A24D—CIGARS; CIGARETTES; TOBACCO SMOKE FILTERS; MOUTHPIECES OF CIGARS OR CIGARETTES; MANUFACTURE OF TOBACCO SMOKE FILTERS OR MOUTHPIECES
  • A24D1/00—Cigars; Cigarettes
  • A24D1/02—Cigars; Cigarettes with special covers
  • A24D1/025—Cigars; Cigarettes with special covers the covers having material applied to defined areas, e.g. bands for reducing the ignition propensity
• • 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
  • A24D—CIGARS; CIGARETTES; TOBACCO SMOKE FILTERS; MOUTHPIECES OF CIGARS OR CIGARETTES; MANUFACTURE OF TOBACCO SMOKE FILTERS OR MOUTHPIECES
  • A24D1/00—Cigars; Cigarettes
  • A24D1/02—Cigars; Cigarettes with special covers
• • A—HUMAN NECESSITIES
  • A24—TOBACCO; CIGARS; CIGARETTES; SIMULATED SMOKING DEVICES; SMOKERS' REQUISITES
  • A24D—CIGARS; CIGARETTES; TOBACCO SMOKE FILTERS; MOUTHPIECES OF 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
  • A24F40/40—Constructional details, e.g. connection of cartridges and battery parts
• • 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
  • A24F40/40—Constructional details, e.g. connection of cartridges and battery parts
  • A24F40/46—Shape or structure of electric heating means
  • A24F40/465—Shape or structure of electric heating means specially adapted for induction heating

Definitions

• the aerosol-generating article may include an aerosol-forming substrate.
• the aerosol-forming substrate may comprise one or more aerosol formers.
• the aerosol-generating article may comprise a wrapper.
• the wrapper may be wrapped around the aerosol-forming substrate.
• the wrapper may comprise a metal layer.
• the aerosol-forming substrate may have an aerosol former content of greater than or equal to 40 percent by weight.
• an aerosol-generating article comprising: an aerosol-forming substrate comprising one or more aerosol formers; and a wrapper, wherein the wrapper is wrapped around the aerosol-forming substrate, wherein the wrapper comprises a metal layer, and wherein the aerosol-forming substrate has an aerosol former content of greater than or equal to 40 percent by weight.
• an aerosol-generating system comprising aerosol-generating article, the aerosol-generating article comprising: an aerosol-forming substrate comprising one or more aerosol formers; and a wrapper, wherein the wrapper is wrapped around the aerosol-forming substrate, wherein the wrapper comprises a metal layer, and wherein the aerosol-forming substrate has an aerosol former content of greater than or equal to 40 percent by weight.
• a wrapper wrapped around the aerosol-forming substrate provides better nicotine delivery when the aerosol-forming substrate comprises a high amount of aerosol former.
• the metal layer may form a barrier between a surface or surfaces of the aerosol-forming substrate and the other components of the aerosol-generating article. This barrier may reduce migration of one or more components of the aerosol-forming substrate, such as the aerosol former, out of the aerosol-forming substrate and into the other components of the aerosol-generating article.
• the increase in the amount of nicotine delivered from the aerosol-forming substrate may be caused by the barrier reducing the migration of one or more components of the aerosol-forming substrate out of the aerosol-forming substrate.
• an aerosol-generating article refers to an article for producing an aerosol.
• An aerosol-generating article typically comprises an aerosol-forming substrate that is suitable and intended to be heated or combusted in order to release volatile compounds that can form an aerosol.
• a conventional cigarette is lit when a user applies a flame to one end of the cigarette and draws air through the other end. The localised heat provided by the flame and the oxygen in the air drawn through the cigarette causes the end of the cigarette to ignite, and the resulting combustion generates an inhalable smoke.
• heated aerosol-generating articles include, for example, electrically heated aerosol-generating articles.
• aerosol-forming substrate refers to a substrate that is capable of producing upon heating volatile compounds, which can form an aerosol.
• the aerosol generated from aerosol-forming substrate may be visible to the human eye or invisible and may include vapours (for example, fine particles of substances, which are in a gaseous state, that are ordinarily liquid or solid at room temperature) as well as gases and liquid droplets of condensed vapours.
• the term "susceptor element” refers to a material that can convert electromagnetic energy into heat. When located within a fluctuating electromagnetic field, eddy currents induced in the susceptor element cause heating of the susceptor element. As the susceptor element is located in thermal contact with the aerosol-forming substrate, the aerosol-forming substrate is heated by the susceptor element.
• the wrapper may comprise a metal layer.
• the wrapper may comprise a paper layer.
• the paper layer may be a non-metallic layer. In other words, the paper layer is not a metal layer or an alloy layer.
• the metal layer may be radially inward of the paper layer.
• the wrapper may comprise a laminate of the metal layer fixed to the paper layer.
• the metal layer may be formed by lamination.
• use of lamination may provide a wrapper that is easier to manufacture.
• lamination may result in a more homogenous layer.
• lamination may be a better option than deposition for an aerosol-generating article that is externally heated, due to the better thermo-conductivity of the thicker layers causing increased conduction of heat.
• the metal layer may have a thickness of greater than or equal to 2 nanometres.
• the metal layer may have a thickness of greater than or equal to 5 nanometres.
• the metal layer may have a thickness of greater than or equal to 10 nanometres.
• the metal layer may have a thickness of greater than or equal to 15 nanometres.
• the metal layer may have a thickness of greater than or equal to 20 nanometres.
• the metal layer may have a thickness of greater than or equal to 25 nanometres.
• the metal layer may have a thickness of greater than or equal to 30 nanometres.
• the metal layer may have a thickness of greater than or equal to 40 nanometres.
• the metal layer may have a thickness of greater than or equal to 50 nanometres.
• the metal layer may have a thickness of less than 6000 nanometres.
• the metal layer may have a thickness of less than 4000 nanometres.
• the metal layer may have a thickness of less than 2000 nanometres.
• the metal layer may have a thickness of less than 1000 nanometres.
• the metal layer may have a thickness of less than 500 nanometres.
• the metal layer may have a thickness of less than 200 nanometres.
• the metal layer may have a thickness of less than 100 nanometres.
• the metal layer may have a thickness of less than 90 nanometres.
• the metal layer may have a thickness of less than 80 nanometres.
• the metal layer may have a thickness of less than 70 nanometres.
• the metal layer may have a thickness of less than 60 nanometres.
• the metal layer may have a thickness of less than 50 nanometres.
• the metal layer may have a thickness of between 2 nanometres and 100 nanometres.
• the metal layer may have a thickness of between 2 nanometres and 90 nanometres.
• the metal layer may have a thickness of between 2 nanometres and 80 nanometres.
• the metal layer may have a thickness of between 2 nanometres and 70 nanometres.
• the metal layer may have a thickness of between 2 nanometres and 60 nanometres.
• the metal layer may have a thickness of between 2 nanometres and 50 nanometres.
• the metal layer may have a thickness of between 5 nanometres and 90 nanometres.
• the metal layer may have a thickness of between 5 nanometres and 80 nanometres.
• the metal layer may have a thickness of between 10 nanometres and 80 nanometres.
• the metal layer may have a thickness of between 10 nanometres and 70 nanometres.
• the metal layer may have a thickness of between 10 nanometres and 60 nanometres.
• the metal layer may have a thickness of between 15 nanometres and 60 nanometres.
• the metal layer may have a thickness of between 15 nanometres and 50 nanometres.
• the metal layer may have a thickness of between 20 nanometres and 50 nanometres.
• the metal layer may have a thickness of between 20 nanometres and 40 nanometres.
• the metal layer may have a thickness of between 25 nanometres and 40 nanometres.
• the metal layer may have a thickness of between 25 nanometres and 30 nanometres.
• the metal layer may comprise one or more of the following metals: aluminium, chromium, copper, gold, nickel, silver, and tin.
• the metal layer may be formed from aluminium.
• the metal layer may comprise an aluminium layer.
• aluminium has a relatively low boiling point, which may make it easier to form the metal layer, particularly when using vapour deposition.
• aluminium has a lower cost when compared to other metals.
• the paper layer may have a thickness of between 10 micrometres and 120 micrometres.
• the paper layer may have a thickness of between 10 micrometres and 100 micrometres.
• the paper layer may have a thickness of between 10 micrometres and 80 micrometres.
• the upstream element may be formed of a heat resistant material.
• the upstream element may be formed of a material that resists temperatures of up to 350 degrees Celsius. This may ensure that the upstream element is not adversely affected by the heating means for heating the aerosol-generating substrate.
• the upstream element may have a diameter that is approximately equal to the diameter of the aerosol-generating article.
• the upstream element may have a length of 5 millimetres.
• the aerosol-generating article may comprise a downstream element located downstream of the aerosol-forming substrate.
• the downstream element may be located adjacent to the aerosol-forming substrate.
• the wrapper may be wrapped around at least a portion of the downstream element.
• the wrapper may be wrapped around at least 5 percent of the length of the downstream element.
• the wrapper may be wrapped around at least 10 percent of the length of the downstream element.
• the wrapper may be wrapped around at least 20 percent of the length of the downstream element.
• the wrapper may be wrapped around at least 30 percent of the length of the downstream element.
• the wrapper may be wrapped around at least 40 percent of the length of the downstream element.
• the wrapper may be wrapped around at least 50 percent of the length of the downstream element.
• the wrapper may be wrapped around the entire length of the downstream element.
• providing the wrapper over at least a portion of the downstream element may reduce migration of components of the aerosol-forming substrate through the join between the aerosol-forming substrate and the downstream element.
• the downstream element may be made of any material suitable for use in an aerosol-generating article.
• the downstream element may be made of a same material as used for one of the other components of the aerosol-generating article. Suitable materials for forming the downstream element include filter materials, ceramic, polymer material, cellulose acetate, cardboard, zeolite or aerosol-generating substrate.
• the downstream element may be formed from a plug of cellulose acetate.
• the downstream element may comprise a hollow tubular segment.
• the hollow tubular segment may also be located adjacent to the aerosol-forming substrate.
• providing the wrapper over at least a portion of the hollow tubular segment may reduce migration of components of the aerosol-forming substrate through the join between the aerosol-forming substrate and the hollow tubular segment.
• the downstream element may comprise a hollow tubular segment.
• the downstream element may comprise a filter plug element.
• the downstream element may comprise a second hollow tubular segment.
• the second hollow tubular segment may be located adjacent to the hollow tubular segment.
• the wrapper may be wrapped around at least a portion of the second hollow tubular segment.
• the wrapper may be wrapped around at least 5 percent of the length of the second hollow tubular segment.
• the wrapper may be wrapped around at least 10 percent of the length of the second hollow tubular segment.
• the wrapper may be wrapped around at least 20 percent of the length of the second hollow tubular segment.
• the wrapper may be wrapped around at least 30 percent of the length of the second hollow tubular segment.
• the wrapper may be wrapped around at least 40 percent of the length of the second hollow tubular segment.
• the wrapper may be wrapped around at least 50 percent of the length of the second hollow tubular segment.
• the wrapper may be wrapped around the entire length of the second hollow tubular segment.
• the downstream element may comprise a mouthpiece element at its downstream end.
• the mouthpiece element may comprise a mouth end cavity.
• the mouth end cavity may be defined by a hollow tubular element provided at the downstream end of the mouthpiece element.
• the mouth end cavity may be defined by the outer wrapper, wherein the outer wrapper extends in a downstream direction from the mouthpiece element.
• the wrapper may be wrapped around at least a portion of the mouthpiece element.
• the wrapper may be wrapped around at least 5 percent of the length of the mouthpiece element.
• the wrapper may be wrapped around at least 10 percent of the length of the mouthpiece element.
• the wrapper may be wrapped around at least 20 percent of the length of the mouthpiece element.
• the wrapper may be wrapped around at least 30 percent of the length of the mouthpiece element.
• the wrapper may be wrapped around at least 40 percent of the length of the mouthpiece element.
• the wrapper may be wrapped around at least 50 percent of the length of the mouthpiece element.
• the wrapper may be wrapped around the entire length of the mouthpiece element.
• an upstream element, an aerosol-forming substrate, a hollow tubular segment, a second hollow tubular segment and a mouthpiece element may be referred to as elements of the aerosol-generating article.
• the wrapper may be wrapped around at least 65 percent of the length of the aerosol-generating article.
• the wrapper may be wrapped around at least 70 percent of the length of the aerosol-generating article.
• the wrapper may be wrapped around at least 75 percent of the length of the aerosol-generating article.
• the wrapper may be wrapped around at least 80 percent of the length of the aerosol-generating article.
• the wrapper may be wrapped around at least 85 percent of the length of the aerosol-generating article.
• the wrapper may be wrapped around at least 90 percent of the length of the aerosol-generating article.
• the wrapper may be wrapped around at least 95 percent of the length of the aerosol-generating article.
• the wrapper may be wrapped around 100 percent of the length of the aerosol-generating article.
• the wrapper may be wrapped around substantially the whole of the length of the aerosol-generating article.
• the wrapper may be wrapped around the whole of the length of the aerosol-generating article.
• One or more elements of the aerosol-generating article may comprise an element wrapper wrapped around substantially the whole length of the element.
• One or more elements of the aerosol-generating article may comprise an element wrapper wrapped around the whole length of the element.
• one or more of the elements comprises an element wrapper.
• the element wrapper may comprise a paper layer.
• the wrapper may be wrapped around and over the one or more element wrappers.
• the aerosol-forming substrate may comprise a gel.
• the aerosol-forming substrate may comprise a film.
• the aerosol-forming substrate may comprise crimped tobacco.
• the aerosol-forming substrate may comprise cut tobacco filler.
• the aerosol-forming substrate may comprise a colloid.
• the colloid may have discontinuous solid particles dispersed in a continuous liquid.
• the colloid may have discontinuous liquid particles dispersed in a continuous liquid.
• the colloid may have discontinuous liquid particles dispersed in a continuous solid.
• the aerosol-forming substrate may be a solid.
• the aerosol-forming substrate may be a film.
• percent by weight refers to dry weight
• the aerosol-forming substrate may have an aerosol former content of greater than 5 percent by weight.
• the aerosol-forming substrate may have an aerosol former content of greater than 10 percent by weight.
• the aerosol-forming substrate may have an aerosol former content of greater than 15 percent by weight.
• the aerosol-forming substrate may have an aerosol former content of greater than 20 percent by weight.
• the aerosol-forming substrate may have an aerosol former content of greater than 25 percent by weight.
• the aerosol-forming substrate may have an aerosol former content of greater than 30 percent by weight.
• the aerosol-forming substrate may have an aerosol former content of greater than 35 percent by weight.
• the aerosol-forming substrate may have an aerosol former content of greater than 40 percent by weight.
• the aerosol-forming substrate may have an aerosol former content of greater than 45 percent by weight.
• the aerosol-forming substrate may have a water content of greater than or equal to 10 percent by weight.
• the aerosol-forming substrate may have a water content of greater than or equal to 15 percent by weight.
• the aerosol-forming substrate may have a water content of greater than or equal to 20 percent by weight.
• the aerosol-forming substrate may have a nicotine content of between 0.5 percent by weight and 5 percent by weight.
• the aerosol-forming substrate may have a nicotine content of between 0.5 percent by weight and 2.5 percent by weight.
• the aerosol-forming substrate may have a nicotine content of between 1 percent by weight and 2.5 percent by weight.
• the aerosol-forming substrate may have a nicotine content of between 1 percent by weight and 2 percent by weight.
• the aerosol-forming substrate may have a nicotine content of between 1.5 percent by weight and 2 percent by weight.
• the aerosol-forming substrate may have a nicotine content of between 1 percent by weight and 1.5 percent by weight.
• the aerosol-forming substrate may have a carboxymethyl cellulose content of greater than or equal to 0.5 percent by weight.
• the aerosol-forming substrate may have a carboxymethyl cellulose content of greater than or equal to 1 percent by weight.
• the aerosol-forming substrate may have a carboxymethyl cellulose content of greater than or equal to 1.5 percent by weight.
• the aerosol-forming substrate may have a carboxymethyl cellulose content of greater than or equal to 2 percent by weight.
• the aerosol-forming substrate may have a carboxymethyl cellulose content of greater than or equal to 2.4 percent by weight.
• the aerosol-forming substrate may have a carboxymethyl cellulose content of greater than or equal to 2.5 percent by weight.
• the aerosol-forming substrate may have a carboxymethyl cellulose content of less than 5 percent by weight.
• the aerosol-forming substrate may have a carboxymethyl cellulose content of less than 4 percent by weight.
• the aerosol-forming substrate may have a carboxymethyl cellulose content of less than 3 percent by weight.
• the aerosol-forming substrate may have a carboxymethyl cellulose content of less than 2.5 percent by weight.
• the aerosol-forming substrate may have a carboxymethyl cellulose content of between 0.5 percent by weight and 5 percent by weight.
• the aerosol-forming substrate may have a carboxymethyl cellulose content of between 0.5 percent by weight and 4 percent by weight.
• the aerosol-forming substrate may have a carboxymethyl cellulose content of between 1 percent by weight and 4 percent by weight.
• the aerosol-forming substrate may have a carboxymethyl cellulose content of between 1 percent by weight and 3 percent by weight.
• the aerosol-forming substrate may have a carboxymethyl cellulose content of between 1.5 percent by weight and 3 percent by weight.
• the aerosol-forming substrate may have a carboxymethyl cellulose content of between 1.5 percent by weight and 2.5 percent by weight.
• the aerosol-forming substrate may have a carboxymethyl cellulose content of between 2 percent by weight and 2.5 percent by weight.
• the one or more acids may be one or more organic acids.
• the one or more organic acids may be one or more carboxylic acids.
• the one or more carboxylic acids may be lactic acid.
• the one or more carboxylic acids may be levulinic acid.
• the aerosol-forming substrate may have an acid content of greater than or equal to 0.5 percent by weight.
• the aerosol-forming substrate may have an acid content of greater than or equal to 1 percent by weight.
• the aerosol-forming substrate may have an acid content of greater than or equal to 1.5 percent by weight.
• the aerosol-forming substrate may have an acid content of greater than or equal to 1.7 percent by weight.
• the aerosol-forming substrate may have an acid content of greater than or equal to 2 percent by weight.
• the aerosol-forming substrate may have an acid content of less than 5 percent by weight.
• the aerosol-forming substrate may have an acid content of less than 2.5 percent by weight.
• the aerosol-forming substrate may have an acid content of less than 2 percent by weight.
• the aerosol-forming substrate may have an acid content of less than 1.7 percent by weight.
• the aerosol-forming substrate may have an acid content of less than 1.5 percent by weight.
• the aerosol-forming substrate may have an acid content of between 0.5 percent by weight and 5 percent by weight.
• the aerosol-forming substrate may have an acid content of between 0.5 percent by weight and 2.5 percent by weight.
• the aerosol-forming substrate may have an acid content of between 1 percent by weight and 2.5 percent by weight.
• the aerosol-forming substrate may have an acid content of between 1 percent by weight and 2 percent by weight.
• the aerosol-forming substrate may have an acid content of between 1.5 percent by weight and 2 percent by weight.
• the aerosol-forming substrate may have a lactic acid content of less than 5 percent by weight.
• the aerosol-forming substrate may have a lactic acid content of less than 2.5 percent by weight.
• the aerosol-forming substrate may have a lactic acid content of less than 2 percent by weight.
• the aerosol-forming substrate may have a lactic acid content of less than 1.7 percent by weight.
• the aerosol-forming substrate may have a lactic acid content of less than 1.5 percent by weight.
• the aerosol-forming substrate may have a moisture content of greater than or equal to 10 percent by weight.
• the aerosol-forming substrate may have a moisture content of greater than or equal to 15 percent by weight.
• the aerosol-forming substrate may have a moisture content of greater than or equal to 20 percent by weight.
• the aerosol-forming substrate may have a moisture content of greater than or equal to 25 percent by weight.
• the aerosol-forming substrate may have a moisture content of less than 30 percent by weight.
• the aerosol-forming substrate may have a moisture content of less than 25 percent by weight.
• the aerosol-forming substrate may have a moisture content of less than 20 percent by weight.
• the aerosol-forming substrate may have a moisture content of less than 15 percent by weight.
• the aerosol-forming substrate may have a moisture content of between 15 percent by weight and 30 percent by weight.
• the aerosol-forming substrate may have a moisture content of between 20 percent by weight and 30 percent by weight.
• the aerosol-forming substrate may have a moisture content of between 25 percent by weight and 30 percent by weight.
• the aerosol-forming substrate may have a moisture content of between 15 percent by weight and 25 percent by weight.
• the aerosol-forming substrate may have a moisture content of between 20 percent by weight and 25 percent by weight.
• the aerosol-forming substrate may have a moisture content of between 15 percent by weight and 20 percent by weight.
• the moisture content is measured as according to the method defined in the description below.
• length denotes the dimension of the aerosol-generating article or a component of the aerosol-generating article in the longitudinal direction.
• the aerosol-generating article may have a length of less than 100 millimetres.
• the aerosol-generating article may have a length of less than 90 millimetres.
• the aerosol-generating article may have a length of less than 80 millimetres.
• the aerosol-generating article may have a length of less than 70 millimetres.
• the aerosol-generating article may have a length of less than 60 millimetres.
• the aerosol-generating article may have a length of less than 50 millimetres.
• the aerosol-generating article may have a length of greater than or equal to 30 millimetres.
• the aerosol-generating article may have a length of greater than or equal to 35 millimetres.
• the aerosol-generating article may have a length of greater than or equal to 38 millimetres.
• the aerosol-generating article may have a length of greater than or equal to 40 millimetres.
• the aerosol-generating article may have a length of greater than or equal to 42 millimetres.
• the aerosol-generating article may have a length of greater than or equal to 45 millimetres.
• the aerosol-generating article may have a length of between 38 millimetres and 70 millimetres.
• the aerosol-generating article may have a length of between 40 millimetres and 70 millimetres.
• the aerosol-generating article may have a length of between 42 millimetres and 70 millimetres.
• the aerosol-generating article may have a length of between 38 millimetres and 60 millimetres.
• the aerosol-generating article may have a length of between 40 millimetres and 60 millimetres.
• the aerosol-generating article may have a length of between 38 millimetres and 50 millimetres.
• the aerosol-generating article may have a length of between 42 millimetres and 50 millimetres.
• the aerosol-generating article may have a length of 45 millimetres.
• the aerosol-generating article may have an external diameter of less than 15 millimetres.
• the aerosol-generating article may have an external diameter of less than 12 millimetres.
• the aerosol-generating article may have an external diameter of less than 10 millimetres.
• the aerosol-generating article may have an external diameter of less than 8 millimetres.
• the aerosol-generating article may have an external diameter of greater than or equal to 5 millimetres.
• the aerosol-generating article may have an external diameter of greater than or equal to 6 millimetres.
• the aerosol-generating article may have an external diameter of greater than or equal to 7 millimetres.
• the aerosol-generating article may have an external diameter of between 5 millimetres and 12 millimetres.
• the aerosol-generating article may have an external diameter of between 6 millimetres and 12 millimetres.
• the aerosol-generating article may have an external diameter of between 7 millimetres and 12 millimetres.
• the aerosol-generating article may have an external diameter of between 5 millimetres and 10 millimetres.
• the aerosol-generating article may have an external diameter of between 6 millimetres and 10 millimetres.
• the aerosol-generating article may have an external diameter of between 7 millimetres and 10 millimetres.
• the aerosol-generating article may have an external diameter of between 5 millimetres and 8 millimetres.
• the aerosol-generating article may have an external diameter of between 6 millimetres and 8 millimetres.
• the aerosol-generating article may have an external diameter of between 7 millimetres and 8 millimetres.
• the aerosol-generating article may comprise an outermost wrapper wrapped around at least the aerosol-forming substrate and the wrapper.
• the outermost wrapper may be formed from paper.
• the aerosol-generating article may comprise a susceptor element.
• the aerosol-generating article may comprise a plurality of susceptor elements.
• the susceptor element may be an elongate susceptor element.
• the susceptor element may be rod-shaped.
• the susceptor element may be flat.
• the susceptor element has a length of 12 mm.
• the susceptor element has a width of 5 mm.
• the susceptor element has a thickness of 60 ⁇ m.
• the term "elongate" means that the susceptor element has a length dimension that is greater than its width dimension or its thickness dimension.
• the length dimension may be greater than twice the width dimension or the thickness dimension.
• the susceptor element may be arranged substantially longitudinally within the aerosol-generating article. This means that the length dimension of the susceptor element is arranged to be approximately parallel to the longitudinal direction of the aerosol-generating article. For example, the susceptor element may be arranged to be within plus or minus 10 degrees of parallel to the longitudinal direction of the aerosol-generating article. The susceptor element may be positioned in a radially central position within the aerosol-generating article. The susceptor element may extend along the longitudinal axis of the rod.
• the susceptor element may be a plurality of susceptor particles which may be deposited on or embedded within the aerosol-forming substrate.
• the susceptor particles may be immobilized by the aerosol-forming substrate and remain at an initial position.
• the susceptor particles may be homogeneously distributed in the aerosol- forming substrate. Due to the particulate nature of the susceptor, heat may be produced according to the distribution of the particles in the aerosol-forming substrate.
• the susceptor element may be in the form of one or more sheets, strips, shreds or rods that may be placed next to or embedded in the aerosol-forming substrate.
• the aerosol-forming substrate may comprise one or more susceptor strips.
• the term "thickness” refers to the distance through the susceptor, from one external face to another external face.
• the susceptor element may have a thickness of between 1 millimetre and 5 millimetres.
• the susceptor element may have a thickness of between 0.01 millimetres and 2 millimetres.
• the susceptor element may have a thickness of between 0.5 millimetres and 2 millimetres.
• the susceptor element may have a thickness of between 10 micrometres and 500 micrometres.
• the susceptor element may have a thickness of between 10 micrometres and 100 micrometres.
• the susceptor may have a constant cross- section.
• the susceptor element may have a circular cross-section. If the susceptor element has a circular cross-section, the susceptor element may have a diameter of between 1 millimetre and 5 millimetres. The diameter of a susceptor with a non-circular cross-section, such as a flat susceptor, may be equivalent to the thickness of the flat susceptor.
• the susceptor element may have a diameter of less than 5 millimetres.
• the susceptor element may have a diameter of less than 4 millimetres.
• the susceptor element may have a diameter of less than 3 millimetres.
• the susceptor element may have a diameter of less than 2 millimetres.
• the total exposed surface area of the aerosol-forming substrate may be maximised by increasing the bulk density of the aerosol-forming substrate so that a greater amount of the substrate, and therefore potentially a larger exposed surface area, can be provided per unit volume of the plug of aerosol-forming substrate.
• the efficiency of release of aerosol from a given volume of aerosol-forming substrate can thereby be improved.
• the bulk density of the aerosol-forming substrate may be greater than or equal to 600 milligrams per cubic centimetre of the aerosol-forming substrate.
• the bulk density of the aerosol-forming substrate may be greater than or equal to 750 milligrams per cubic centimetre of the aerosol-forming substrate.
• the bulk density of the aerosol-forming substrate may be greater than or equal to 850 milligrams per cubic centimetre of the aerosol-forming substrate.
• the bulk density of the aerosol-forming substrate may be greater than or equal to 1000 milligrams per cubic centimetre of the aerosol-forming substrate.
• the bulk density of the aerosol-forming substrate may be less than 2000 milligrams per cubic centimetre of the aerosol-forming substrate.
• the bulk density of the aerosol-forming substrate may be less than 1750 milligrams per cubic centimetre of the aerosol-forming substrate.
• the bulk density of the aerosol-forming substrate may be less than 1500 milligrams per cubic centimetre of the aerosol-forming substrate.
• the bulk density of the aerosol-forming substrate may be less than 1250 milligrams per cubic centimetre of the aerosol-forming substrate.
• the bulk density of the aerosol-forming substrate may be less than 1000 milligrams per cubic centimetre of the aerosol-forming substrate.
• the bulk density of the aerosol-forming substrate may be less than 850 milligrams per cubic centimetre of the aerosol-forming substrate.
• the bulk density of the aerosol-forming substrate may less than 750 milligrams per cubic centimetre of the aerosol-forming substrate.
• the bulk density of the aerosol-forming substrate may be less than 600 milligrams per cubic centimetre of the aerosol-forming substrate.
• the bulk density of the aerosol-forming substrate may be between 100 milligrams per cubic centimetre of the aerosol-forming substrate and 2000 milligrams per cubic centimetre of the aerosol-forming substrate.
• the bulk density of the aerosol-forming substrate may be between 200 milligrams per cubic centimetre of the aerosol-forming substrate and 1500 milligrams per cubic centimetre of the aerosol-forming substrate.
• the bulk density of the aerosol-forming substrate may be between 300 milligrams per cubic centimetre of the aerosol-forming substrate and 1000 milligrams per cubic centimetre of the aerosol-forming substrate.
• the bulk density of the aerosol-forming substrate may be between 400 milligrams per cubic centimetre of the aerosol-forming substrate and 600 milligrams per cubic centimetre of the aerosol-forming substrate.
• the bulk density of the aerosol-forming substrate corresponds to the total weight of the aerosol-forming substrate (in milligrams), not including the weight of any carrier material, divided by the total volume of the aerosol-forming substrate (in cubic centimetres).
• the aerosol-generating system may include an aerosol-generating device.
• the aerosol-generating device may comprise a housing defining a device cavity configured to receive at least a portion of the aerosol-generating article.
• the thermal atomiser may comprise an inductive heating device.
• Inductive heating devices typically comprise an induction source that is configured to be coupled to a susceptor element, which may be provided externally to the aerosol-forming substrate or internally within the aerosol-forming substrate.
• the induction source generates an alternating electromagnetic field that induces magnetization or eddy currents in the susceptor element.
• the susceptor element may be heated as a result of hysteresis losses or induced eddy currents which heat the susceptor element through ohmic or resistive heating.
• the aerosol-generating device may include a susceptor.
• the susceptor element may be as described above in relation to the aerosol-generating article.
• An aerosol-generating device comprising an inductive heating device may be configured to receive an aerosol-generating article having the aerosol-forming substrate and a susceptor element in thermal proximity to the aerosol-forming substrate.
• the susceptor element is in direct contact with the aerosol-forming substrate and heat is transferred from the susceptor element to the aerosol-forming substrate primarily by conduction.
• the aerosol-generating device may comprise a battery and control electronics.
• any features described herein in relation to one embodiment of an aerosol-forming substrate, an aerosol-generating article, an aerosol-generating device, or an aerosol-generating system may also be applicable to other embodiments of aerosol-forming substrates, an aerosol-generating articles, an aerosol-generating devices, or aerosol-generating systems according to this disclosure.
• a feature described in relation to one embodiment may be equally applicable to another embodiment in accordance with this disclosure.
• an aerosol generator according to this disclosure may be provided in an aerosol-generating device without a cartridge. Accordingly, any of the features described herein with relation to a cartridge may be equally applicable to an aerosol-generating device.
• Aerosol-generating systems for delivering an aerosol to a user typically comprise an aerosol-generating article and an atomiser.
• the aerosol-generating article includes an aerosol-forming substrate.
• the atomiser is configured to generate an inhalable aerosol from an aerosol-forming substrate.
• Some known aerosol-generating systems comprise a thermal atomiser such as an electric heater or an inductive heating device.
• the thermal atomiser is configured to heat and vaporise the aerosol-forming substrate to generate an aerosol, which can be inhaled by a user.
• Typical aerosol-forming substrates for use in aerosol-generating systems are nicotine formulations, which may be liquid nicotine formulations comprising an aerosol former such as glycerine.
• the aerosol-forming substrate is typically held within a plug of a porous material. It has been found that, in some cases, a quantity of one or more components of the aerosol-forming substrate, such as glycerine or nicotine, may leak out of the plug and migrate to other parts of the aerosol-generating article. Migration of the aerosol-forming substrate away from the plug may reduce the amount of aerosol-forming substrate that can be vaporised and then inhaled by a user.
• migration of a components of the aerosol-forming substrate away from the plug may have a negative impact of the user experience provided by the aerosol-generating article.
• migration of nicotine from the aerosol-forming substrate may reduce the amount of nicotine that can be inhaled by a user.
• One known solution is to wrap the aerosol-generating article in hydrophobic paper.
• the present inventors have found that when using hydrophobic paper, some of the aerosol former in the aerosol-forming substrate may migrate into the paper during the process of manufacturing the aerosol-generating article. This can dampen or soften the hydrophobic paper, which may make the aerosol-generating article difficult to handle, or may result in the aerosol-generating becoming jammed in a machine used for manufacturing the aerosol-generating article.
• the aerosol-generating article 100 includes a rod 12 of aerosol-forming substrate.
• the rod 12 of aerosol-forming substrate is formed by crimping a portion of a sheet of cast leaf tobacco.
• the aerosol-generating article 100 also includes a downstream section 14 and an upstream section 16.
• the downstream section 14 is at a location downstream of the rod 12 of aerosol-forming substrate.
• the upstream section 16 is at a location upstream of the rod 12 of aerosol-forming substrate.
• the aerosol-generating article 100 extends from an upstream end (or distal end) 18 to a downstream end (or mouth end) 20.
• the aerosol-generating article 100 has an overall length of about 45 millimetres.
• the downstream section 14 includes a support element 22 located immediately downstream of the rod 12 of aerosol-forming substrate.
• the support element 22 is in longitudinal alignment with the rod 12 of aerosol-forming substrate.
• the downstream section 14 includes an aerosol-cooling element 24.
• the aerosol-cooling element 24 is located immediately downstream of the support element 22.
• the aerosol-cooling element 24 is in longitudinal alignment with the rod 12 of aerosol-forming substrate and the support element 22. In the example shown in Figure 1 , an upstream end of the aerosol-cooling element 24 abuts a downstream end of the support element 22.
• the support element 22 includes a first hollow tubular segment 26.
• the first hollow tubular segment 26 is provided in the form of a hollow cylindrical tube made of cellulose acetate.
• the first hollow tubular segment 26 defines an internal cavity 28 that extends all the way from an upstream end 30 of the first hollow tubular segment 26 to a downstream end 32 of the first hollow tubular segment 26.
• the internal cavity 28 is substantially empty, and so substantially unrestricted airflow is enabled along the internal cavity 28.
• the first hollow tubular segment 26 has a length of about 8 millimetres, an external diameter of about 7.25 millimetres, and an internal diameter of about 1.9 millimetres.
• a thickness of a peripheral wall of the first hollow tubular segment 26 is about 2.67 millimetres.
• the second hollow tubular segment 34 has a length of about 8 millimetres, an external diameter of about 7.25 millimetres, and an internal diameter of about 3.25 millimetres.
• a thickness of a peripheral wall of the second hollow tubular segment 34 is about 2 millimetres.
• a ratio between the internal diameter of the first hollow tubular segment 26 and the internal diameter of the second hollow tubular segment 34 is about 0.75.
• Example A The moisture content of Example A is 20 percent by weight.
• the moisture content includes all the glycerine content and the water content of the formulation.
• a wrapper 70 that is wrapped around the rod 12 of aerosol-forming substrate, and includes a metal layer, may help to contain one or more of the components of the aerosol-forming substrate within the rod 12.
• the wrapper 70 may help to reduce migration of one or more components of an aerosol-forming substrate away from the rod 12 and into other parts of the aerosol-generating article 100.
• the nicotine yield from the plug 12 of aerosol-forming substrate is 278 micrograms when the aerosol-generating article 100 does not include the wrapper 70. However, when the aerosol-generating article 100 does include the wrapper 70, the nicotine yield from the rod 12 of aerosol-forming substrate increases by 66% to 461 micrograms.
• An increase in nicotine yield from the rod 12 of aerosol-forming substrate may lead to an improvement in the user experience.

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• Toxicology (AREA)
• Chemical & Material Sciences (AREA)
• Chemical Kinetics & Catalysis (AREA)
• General Chemical & Material Sciences (AREA)
• Medicinal Preparation (AREA)
• Cigarettes, Filters, And Manufacturing Of Filters (AREA)
• Containers And Packaging Bodies Having A Special Means To Remove Contents (AREA)
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• 2022
  • 2022-07-20 US US18/580,068 patent/US20240365849A1/en active Pending
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  • 2022-07-20 EP EP25179659.5A patent/EP4602932A3/de active Pending
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