KR20220109393A - Aerosol-generating substrate element with thick paper - Google Patents

Abstract

The aerosol-generating substrate element comprises an aerosol-generating substrate comprising a glycerin content of from about 10% to about 30% and at least one paper layer surrounding the aerosol-generating substrate. The paper layer has a thickness ranging from about 78 μm to about 160 μm. At least about 80% of the circumference of the aerosol-generating substrate is surrounded by less than two layers of paper.

Description

Aerosol-generating substrate element with thick paper

The present disclosure relates to thick paper used in aerosol-generating substrate elements. The thick paper surrounds the aerosol-generating substrate to form the aerosol-generating substrate element.

Aerosol-generating articles are known in the art in which an aerosol-generating substrate, such as a tobacco-containing substrate, is heated rather than combusted. Typically, in such heated aerosol-generating articles, the aerosol is directed from a heat source to a physically separate aerosol-generating substrate or material, which may be located in, in contact with, within, around, or downstream of the heat source. generated by heat transfer. During use of the aerosol-generating article, volatile compounds are released from the aerosol-generating substrate by heat transfer from a heat source and are entrained in the air drawn through the aerosol-generating article. As the released compound cools, the compound condenses to form an aerosol.

The paper used to wrap the aerosol-generating substrate and form the aerosol-generating element may absorb aerosol formers, water and other liquid compounds found in mainstream smoke or aerosols passing through the aerosol-generating article, water and other liquid compounds, or moisture or moisture surrounding the paper. can Absorbed liquid stains or weakens the paper and can negatively affect the appearance and structural integrity of the aerosol-generating article. Heated aerosol-generating articles are particularly susceptible to wetting and breaking due to the high levels of aerosol formers in the aerosol-generating substrate of these heated aerosol-generating articles. Heated aerosol-generating articles are particularly susceptible to swelling as the aerosol component is absorbed by the wrapper, making it difficult to remove from the heating device.

A resistive heating blade may be inserted into the aerosol-generating substrate to heat the aerosol-generating substrate and release volatile compounds from the aerosol-generating substrate. The resistive heating blade may provide a localized heat source within the aerosol-generating substrate that may be positioned along a central axis of the aerosol-generating substrate. An aerosol-generating substrate positioned around the perimeter or interface with the paper wrapper may not be sufficiently heated by a centrally positioned resistive heating blade, resulting in an unused aerosol-generating substrate within the aerosol-generating element.

It would be desirable to provide an aerosol-generating substrate element that is visually and mechanically stable, particularly for heat-not-burn aerosol-generating substrates containing high levels of liquid or aerosol formers. It would also be desirable for this thick paper layer not to affect the taste of the aerosol generated by the aerosol-generating substrate element.

It would be desirable to provide an aerosol-generating substrate element that reduces the amount of unused aerosol-generating substrate in the aerosol-generating element.

It would be desirable to provide an aerosol-generating substrate element wrapped by a single turn of a thick paper layer.

It would also be desirable for such wrappers to not readily burn when proximate to a heating element and not adversely affect the heating of the non-combustible heated aerosol-generating substrate.

It may be an object of the present invention to at least partially solve one or more of the above-mentioned desirable technical advantages.

According to the present disclosure, there is provided an aerosol-generating substrate element comprising an aerosol-generating substrate and at least one paper layer surrounding the aerosol-generating substrate. The paper layer has a thickness ranging from about 78 μm to about 160 μm.

Preferably, the aerosol-generating substrate element comprises an aerosol-generating substrate having a glycerin content of from 10% to about 30%, and at least one paper layer surrounding the aerosol-generating substrate. The paper layer has a thickness ranging from about 78 μm to about 160 μm, wherein at least about 80% of the circumference of the aerosol-generating substrate is surrounded by less than two paper layers.

Preferably, the paper layer has a paper thickness ranging from about 78 μm to about 140 μm, or from about 100 μm to about 140 μm, or from about 125 μm to about 140 μm. Preferably, the paper layer has a paper thickness ranging from about 90 μm to about 140 μm, or from about 110 μm to about 140 μm, or from about 130 μm to about 140 μm.

The paper layer may not extend beyond the end of the aerosol-generating substrate.

Preferably, at least about 80%, or at least about 90%, or at least about 95% of the circumference of the aerosol-generating substrate may be surrounded by less than two layers of paper. Preferably, no more than two paper layers extend beyond the length of the aerosol-generating substrate. Preferably, at least about 80%, or at least about 90%, or at least about 95% of the circumference of the aerosol-generating substrate is surrounded by less than two layers of paper surrounding the aerosol-generating substrate substantially along the length of the aerosol-generating substrate. All.

Preferably, the aerosol-generating substrate defines a substantially cylindrical shape. The aerosol-generating substrate may define a substantially cylindrical shape having a diameter ranging from about 6.8 mm to about 7.1 mm. The aerosol-generating substrate may define a substantially cylindrical shape having a diameter ranging from about 6.8 mm to about 7.0 mm.

The paper layer has a paper thickness in a range from about 1:120 to about 1:40, or from about 1:100 to about 1:50, or from about 1:70 to about 1:50, or from about 1:60 to about 1:50. It may have a ratio of the diameter of the tobacco substrate.

The aerosol-generating substrate may comprise homogenised tobacco material. The homogenized tobacco material may comprise, by dry weight, from about 1% to about 5% binder, and from about 5% to about 30% aerosol former, tobacco material. The aerosol-generating substrate may comprise a corrugated sheet, preferably a crimped sheet, of homogenised tobacco material.

The aerosol-generating substrate may comprise a metal induction heating element. The aerosol-generating substrate may comprise a plurality of metal induction heating elements.

The aerosol-generating substrate may be configured to directly heat the aerosol-generating substrate without transferring heat to the aerosol-generating substrate through the at least one layer of paper.

Advantageously, an aerosol-generating substrate element comprising a single turn of a thick paper layer provides an aerosol-generating substrate element that is visually and mechanically stable, particularly against non-combustible heated aerosol-generating substrates containing high levels of liquid or aerosol former. can do. As a result, visible staining and physical weakening of the wrapper portion of the aerosol-generating article can be reduced even when high levels of wetting agent are included in the aerosol-generating substrate.

Advantageously, an aerosol-generating substrate element comprising a single turn of a thick paper layer may be formed on a conventional substrate element forming manufacturing equipment. This can improve the processability of the aerosol-generating substrate element and reduce manufacturing costs.

Advantageously, an aerosol-generating substrate element comprising a single turn of a thick paper layer can be uniformly heated and can increase the amount of aerosol-generating substrate consumed, thereby reducing unused or consumed aerosol-generating substrate material.

Advantageously, an aerosol-generating substrate element comprising a single turn of a thick paper layer is capable of utilizing internal heating of the aerosol-generating substrate via an inductive or resistive heating element embedded or embedded in the aerosol-generating substrate, and wrapping the aerosol-generating substrate. The thick paper may not negatively affect the heating of the non-combustible heated aerosol-generating substrate.

Conventional cigarettes ignite when a user applies a flame to one end of the cigarette and draws air through the other end. The local heat provided by the flame and the oxygen in the air drawn through the cigarette cause the end of the cigarette to ignite, and the resulting combustion produces inhalable smoke. In contrast, in heated aerosol-generating articles, the aerosol is generated by heating a flavor-generating substrate such as tobacco. Known heated aerosol-generating articles include, for example, electrically heated aerosol-generating articles and aerosol-generating articles in which an aerosol is generated by heat transfer to an aerosol-forming substrate physically separated from a combustible fuel element or heat source. For example, aerosol-generating articles according to the present disclosure find particular application in aerosol-generating systems comprising an electrically heated aerosol-generating device having an internal heater blade adapted to be inserted into a rod of an aerosol-generating substrate. Aerosol-generating articles of this type are described in the prior art, for example in EP 0822670.

As used herein, the term “aerosol-generating device” refers to a device comprising a heater element that interacts with the aerosol-generating substrate of an aerosol-generating article to generate an aerosol.

As used herein, the term “aerosol-generating system” refers to the combination of an aerosol-generating device and an aerosol-generating article.

As used herein, the term “aerosol-generating article” refers to an article comprising an aerosol-generating substrate that is heated to generate and deliver an inhalable aerosol to a consumer.

The term “aerosol-generating substrate element” is used herein to refer to an aerosol-generating substrate that is wrapped with a paper layer to form part of an aerosol-generating article.

The term “aerosol-generating substrate” refers to a substrate capable of generating or emitting an aerosol. The aerosol-generating substrate may be a solid, paste, gel, slurry, liquid, or may comprise any combination of solid, paste, gel, slurry, and liquid components. Preferably, the aerosol-generating substrate is a solid, or a gel composition. The aerosol-generating substrate may preferably comprise nicotine.

The term “mouthpiece” is used herein to refer to the portion of an aerosol-generating article designed to come into contact with the mouth of a consumer. The mouthpiece may be part of an aerosol-generating article that may include a filter, or in some cases the mouthpiece may be defined according to the degree of a tipping wrapper.

The terms “upstream” and “downstream” refer to the relative positions of elements of an aerosol-generating article that are described with respect to the direction of the aerosol as it is drawn from the aerosol-generating substrate and through the mouthpiece.

The aerosol-generating substrate element of the present invention comprises an aerosol-generating substrate wrapped with a single turn of a thick paper layer. The aerosol-generating substrate element comprises an aerosol-generating substrate and at least one paper layer surrounding the aerosol-generating substrate. Preferably, a single turn of the thick paper layer does not extend beyond the end of the aerosol-generating substrate.

The paper layer has a thickness ranging from about 78 μm to about 160 μm. Preferably, the paper layer has a paper thickness ranging from about 78 μm to about 140 μm, or from about 100 μm to about 140 μm, or from about 125 μm to about 140 μm. The paper layer may not extend beyond the end of the aerosol-generating substrate.

Preferably, the paper layer has a paper thickness ranging from about 90 μm to about 140 μm, or from about 110 μm to about 140 μm, or from about 130 μm to about 140 μm. The paper layer may not extend beyond the end of the aerosol-generating substrate. Typically the wrapped tobacco substrate may have a thickness in the range of about 20 μm to about 25 μm.

Preferably, at least about 80%, or at least about 90%, or at least about 95% of the circumference of the aerosol-generating substrate may be surrounded by less than two layers of paper. Preferably, no more than two paper layers extend beyond the length of the aerosol-generating substrate. Preferably, no more than two paper layers extend beyond the ends of the aerosol-generating substrate. Preferably, at least about 80%, or at least about 90%, or at least about 95% of the circumference of the aerosol-generating substrate is surrounded by less than two layers of paper surrounding the aerosol-generating substrate substantially along the length of the aerosol-generating substrate. All.

The paper layer surrounds the entire circumference of the aerosol-generating substrate with very little overlap of the paper layer on itself. The overlapping area forms more than one paper layer, for example two layers.

The overlap may be no more than about 20% of the circumference of the aerosol-generating substrate. The overlap may be no more than about 10% of the circumference of the aerosol-generating substrate. The overlap may be no more than about 5% of the circumference of the aerosol-generating substrate. Reducing the overlap of papers may help to avoid or minimize defined voids or air pockets between paper layers in overlap areas.

The paper layer may not extend beyond the end of the aerosol-generating substrate. Preferably, the paper layer surrounds the entire length of the aerosol-generating substrate between the ends of the aerosol-generating substrate. Preferably, the paper layer surrounds the entire length of the aerosol-generating substrate between the ends of the aerosol-generating substrate and does not extend beyond one or both ends of the aerosol-generating substrate.

The paper layer may surround the aerosol-generating substrate to define the aerosol-generating substrate element in a substantially cylindrical shape. The aerosol-generating substrate may define a substantially cylindrical shape having a diameter ranging from about 6.8 mm to about 7.1 mm. The aerosol-generating substrate element may define a substantially cylindrical shape having a diameter ranging from about 7.1 mm to about 7.3 mm.

The paper layer may surround the aerosol-generating substrate to define the aerosol-generating substrate element in a substantially cylindrical shape. The aerosol-generating substrate may define a substantially cylindrical shape having a diameter ranging from about 6.8 mm to about 7.0 mm. The aerosol-generating substrate element may define a substantially cylindrical shape having a diameter ranging from about 7.15 mm to about 7.25 mm.

The at least one paper layer has a range from about 1:120 to about 1:40, or from about 1:100 to about 1:50, or from about 1:70 to about 1:50, or from about 1:60 to about 1:50. It may have a ratio of paper thickness to tobacco substrate diameter. A conventionally wrapped tobacco substrate may have a ratio of paper thickness to tobacco substrate diameter of about 1:300.

The at least one paper layer has a range from about 1:100 to about 1:40, or from about 1:75 to about 1:50, or from about 1:65 to about 1:50, or from about 1:60 to about 1:50. It may have a ratio of paper thickness to tobacco substrate element diameter. A conventionally wrapped tobacco substrate may have a ratio of paper thickness to tobacco substrate element diameter of about 1:300.

The aerosol-generating substrate element preferably comprises an aerosol-generating substrate having a diameter ranging from about 6.8 mm to about 7.1 mm, and a single paper layer having a thickness ranging from about 78 μm to 140 μm surrounding the aerosol-generating substrate, At least 80% or at least 90% of the circumference of the aerosol-generating substrate is surrounded by less than two layers of paper. Preferably, this single paper layer does not extend beyond the end of the aerosol-generating substrate. Preferably, this single paper layer surrounds the entire length of the aerosol-generating substrate.

The aerosol-generating substrate element preferably comprises an aerosol-generating substrate having a diameter ranging from about 6.8 mm to about 7.1 mm and a single paper layer having a thickness ranging from about 100 μm to 140 μm surrounding the aerosol-generating substrate, and Less than 20% or less than 10% of the circumference of the substrate is surrounded by the overlapping paper layer. Preferably, this single paper layer does not extend beyond the end of the aerosol-generating substrate. Preferably, this single paper layer surrounds the entire length of the aerosol-generating substrate.

The aerosol-generating substrate element preferably comprises an aerosol-generating substrate element having a diameter ranging from about 7.15 mm to about 7.25 mm, and a single paper layer having a thickness ranging from about 100 μm to 140 μm surrounding the aerosol-generating substrate, , less than 20% or less than 10% of the circumference of the aerosol-generating substrate is surrounded by the overlapping paper layer. Preferably, this single paper layer does not extend beyond the end of the aerosol-generating substrate. Preferably, this single paper layer surrounds the entire length of the aerosol-generating substrate.

The aerosol-generating substrate element preferably comprises an aerosol-generating substrate having a diameter and a single paper layer having a thickness surrounding the aerosol-generating substrate, wherein at least 80% or at least 90% of the circumference of the aerosol-generating substrate is less than two surrounded by a layer of paper. Preferably, this single paper layer does not extend beyond the end of the aerosol-generating substrate. Preferably, this single paper layer surrounds the entire length of the aerosol-generating substrate. Preferably, the ratio of paper thickness to tobacco substrate diameter ranges from about 1:120 to about 1:40, or from about 1:100 to about 1:50. Preferably, at least one paper layer is from about 1:100 to about 1:40, or from about 1:75 to about 1:50, or from about 1:65 to about 1:50, or from about 1:60 to about 1 It may have a ratio of paper thickness to tobacco substrate element diameter in the range of :50.

The aerosol-generating article may include an aerosol-generating substrate element and a mouthpiece. The mouthpiece may include a filter. The tipping wrapper may couple the filter to the aerosol-generating substrate element. One or more intermediate sections may separate the aerosol-generating substrate and the mouthpiece. The tipping wrapper may cover no more than 25% downstream of the aerosol-generating substrate element.

The aerosol-generating substrate may be a solid composition. Such compositions may include plant-based materials. The aerosol-generating substrate may comprise tobacco, preferably the tobacco contains a volatile tobacco flavor compound that is released from the aerosol-generating substrate upon heating. The aerosol-generating substrate may comprise a homogenised tobacco material, an aerosol former and a binder.

The nicotine may be present in the aerosol-generating substrate in the range of about 0.5 to about 10 weight percent nicotine, or about 0.5 to about 5 weight percent nicotine. Preferably, the aerosol-generating substrate may comprise from about 1 wt% to about 3 wt% nicotine, or from about 1.5 wt% to about 2.5 wt% nicotine, or from about 2 wt% nicotine.

The aerosol-generating substrate may comprise, in any suitable form, any suitable type or types of tobacco material or tobacco substitute. The aerosol-generating substrate may comprise flue-cured tobacco, Burley tobacco, Maryland tobacco, Orient tobacco, specialty tobacco, homogenized or reconstituted tobacco, or any combination thereof. The aerosol-generating substrate may include tobacco cut filler, tobacco lamina, processed tobacco material such as volumetric inflatable or inflated tobacco, cut-rolled or cut-puffed stems such as stems. It may be provided in the form of processed tobacco sacks, homogenized tobacco, reconstituted tobacco, cast leaf tobacco, or blends thereof, and the like. The term "tobacco cut filler" is used herein to refer to a tobacco material that is primarily made from the leaf part of tobacco leaves. As used herein, the term “tobacco cut filler” refers to both a single species of Nicotiana and two or more species of Nicotiana that form a tobacco common cut filler blend.

As used herein, the term “homogenized tobacco” refers to a material formed by aggregating particulate tobacco. Homogenized tobacco may include reconstituted tobacco or cast leaf tobacco, or a mixture of both. The term "reconstituted tobacco" refers to a paper-like material that can be made from tobacco by-product, such as tobacco fine powder, tobacco powder, tobacco sacks or mixtures thereof. Reconstituted tobacco can be made by extracting the soluble chemicals in the tobacco by-product, processing the remaining tobacco fibers into a sheet, and reapplying the extract material in a concentrated form to the sheet. As used herein, the term "cast leaf tobacco" refers to a process in which a slurry comprising ground tobacco particles and a binder (eg, guar) is cast onto a support surface such as a belt conveyor, the slurry is dried, and the dried sheet is removed from the support surface. is used to refer to a product produced by a process well known in the art that is based on Exemplary methods for producing this type of aerosol-generating substrate are described in U.S. Patent Nos. 5,724,998; US Pat. No. 5,584,306; US Pat. No. 4,341,228; US Pat. No. 5,584,306 and US Pat. No. 6,216,706. The homogenised tobacco may be formed into a sheet that is crimped, crumpled, folded, or otherwise compressed before being wrapped to form a rod. For example, a sheet of homogenised tobacco material for use in the present invention may be crimped using a crimping unit of the type described in CH-A-691156 comprising a pair of rotary crimping rollers. . However, it will be understood that sheets of homogenised tobacco material for use in the present invention may be textured using other suitable machines and processes for deforming or perforating sheets of homogenised tobacco material.

Aerosol-generating substrates used in aerosol-generating articles generally comprise higher levels of aerosol former(s) than combustible smoking articles such as cigarettes. Wetting agents may also be referred to as “aerosol formers”. Aerosol former is used to describe any suitable known compound or mixture of compounds that, in use, facilitates the formation of an aerosol and is substantially resistant to thermal degradation at the operating temperature of the aerosol-generating substrate. Suitable aerosol formers are known in the art and include polyhydric alcohols such as propylene glycol, triethylene glycol, 1,3-butanediol and glycerin; esters of polyhydric alcohols such as glycerin mono-, di- or triacetate; and aliphatic esters of mono-, di- or polycarboxylic acids, such as dimethyl dodecanedioate and dimethyl tetradecanedioate. Preferred aerosol formers are propylene glycol, triethylene glycol, 1,3-butanediol and most preferably glycerin or polyhydric alcohols such as glycerin or mixtures thereof. The aerosol-generating substrate may comprise a single aerosol former. Alternatively, the aerosol-generating substrate may comprise a combination of two or more aerosol formers.

The aerosol-generating substrate may have a high level of aerosol former. As used herein, a high level of aerosol former means an aerosol former content that is greater than about 10% by weight or preferably greater than about 15% by weight or more preferably greater than about 20% by weight. The aerosol-generating substrate may also have an aerosol former content of from about 10% to about 30% by weight, from about 15% to about 30% by weight, or from about 20% to about 30% by weight. The aerosol-generating substrate may preferably have a glycerin content of from about 10% to about 30% by weight, from about 15% to about 30% by weight, or from about 20% to about 30% by weight.

The aerosol-generating substrate is at least about 1% by weight, or at least about 2% by weight, or at least about 5% by weight, or at least about 7% by weight, or at least about 10% by weight, or at least about 12% by weight, or at least about 15% by weight. %, or at least about 18% by weight of an aerosol former. The aerosol-generating substrate may comprise in the range of from about 1% to about 20% by weight, or from about 5% to about 20% by weight, or from about 10% to about 20% by weight of the aerosol former.

The aerosol-generating substrate is at least about 1% by weight, or at least about 2% by weight, or at least about 5% by weight, or at least about 7% by weight, or at least about 10% by weight, or at least about 12% by weight, or at least about 15% by weight. %, or at least about 18% glycerin by weight. The aerosol-generating substrate may comprise glycerin in the range of from about 1% to about 20% by weight, or from about 5% to about 20% by weight, or from about 10% to about 20% by weight.

Preferably, the aerosol-generating article may be generally cylindrical. This allows for a smooth flow of the aerosol. The aerosol-generating article may have an outer diameter of, for example, from about 7.1 mm to about 7.3 mm, or from about 7.15 mm to about 7.25 mm. The aerosol-generating article may have a length of, for example, between 10 mm and 60 mm, between 15 mm and 50 mm or between 20 mm and 45 mm.

The aerosol-generating substrate may include a flavoring agent. The botanical material provides a flavoring agent capable of imparting flavor to the taste of the aerosol generated by the aerosol-generating article. A flavoring agent is any natural or artificial compound that affects the organoleptic quality of the aerosol. Non-limiting examples of flavoring sources include mints such as peppermint and spearmint, coffee, tea, cinnamon, cloves, cocoa, vanilla, eucalyptus, geranium, agave, and juniper; and combinations thereof.

The aerosol-generating substrate may comprise an essential oil. The essential oil may provide a flavoring agent capable of imparting flavor to the taste of the aerosol generated by the aerosol-generating article. Suitable essential oils include, but are not limited to, eugenol, peppermint oil, spearmint oil. A preferred essential oil is eugenol. The essential oil may be present in the aerosol-generating substrate in an amount of at least about 0.1% by weight, or at least about 0.5% by weight, or at least about 1% by weight. The essential oil may be present in the aerosol-generating substrate in a range from about 0.1% to about 10% by weight, or from about 0.1% to about 5% by weight, or from about 0.5% to about 2% by weight.

The aerosol-generating substrate may comprise homogenised tobacco material. The homogenized tobacco material may comprise tobacco material, by dry weight, from about 1% to about 5% binder, and from about 5% to about 30% aerosol former. Sheets of homogenised tobacco for use in the aerosol-generating article of the present invention may be made by methods known in the art, for example those disclosed in International Patent Application WO-A-2012/164009 A2. In a preferred embodiment, a sheet of homogenised tobacco material for use in an aerosol-generating article is formed by a casting process into a slurry comprising particulate tobacco, guar gum, cellulose fibers and glycerin.

The aerosol-generating substrate may comprise a corrugated sheet, preferably a crimped sheet, of homogenised tobacco material. As used herein, the term “crimped” refers to a sheet having a plurality of substantially parallel ridges or corrugations. Preferably, when the aerosol-generating article is assembled, substantially parallel ridges or corrugations extend along or parallel to the longitudinal axis of the aerosol-generating article.

The aerosol-generating system comprises: a heat source; aerosol-generating substrates; at least one air inlet downstream of the aerosol-generating substrate; and an airflow path extending between the at least one air inlet and the mouth end of the article. The heat source may be integral with the aerosol-generating device and the consumable aerosol-generating article may be removably received within the aerosol-generating device.

The heat source may be a combustible heat source, a chemical heat source, an electrical heat source, a heat sink, or any combination thereof. The heat source may preferably be an electric heat source shaped in the form of a blade that can be inserted into the aerosol-generating substrate. Alternatively, the heat source may be configured to surround the aerosol-generating substrate and may itself be in the form of a hollow cylinder or any other such suitable form.

Preferably, the heat source is configured to directly heat the aerosol-generating substrate without transferring heat to the aerosol-generating substrate through the at least one paper layer.

The aerosol-generating substrate may comprise an induction heating element or susceptor or a plurality of induction heating elements or susceptors. An induction heating element or susceptor is heated in the presence of an alternating or fluctuating electromagnetic field. When the heating is by induction heating, the fluctuating electromagnetic field is transmitted through the aerosol-generating article to the induction heating element or susceptor, whereby the susceptor or induction heating element converts the fluctuating field into thermal energy to heat the aerosol-generating substrate.

The induction heating element may be formed of any material capable of induction heating to a temperature sufficient to generate an aerosol from the aerosol-generating substrate. The induction heating element or susceptor may comprise metal or carbon. A preferred induction heating element or susceptor may comprise a ferromagnetic material, for example ferritic iron or ferromagnetic steel or stainless steel. The induction heating element or susceptor may comprise aluminum. The induction heating element or susceptor may be formed of 400 series stainless steel, for example grade 410, or grade 420 or grade 430 stainless 20 steel. Different materials dissipate different amounts of energy when placed in an electromagnetic field with similar values of frequency and magnetic field strength. Preferably, the induction heating element or susceptor is heated to a temperature greater than 250°C. However, preferably the induction heating element or susceptor is heated below 350°C to prevent burning of the material in contact with the susceptor.

The aerosol-generating substrate may comprise a metal induction heating element. The metal induction heating element may include a plurality of metal induction heating elements. The metal induction heating element may comprise a metal induction heating ring element.

These paper layers can exhibit a variety of transmittances, including those that are not permeable. The permeability of cigarette paper is determined using the International Standard test method ISO 2965:2009, and the result is expressed as the volume (cm³) passing 1 cm² per minute, which is referred to as the "CORESTA unit" is called The permeability of the wrappers described herein can range from about 1 to about 10 Coresta units, from about 5 to about 20 Coresta units, or from about 1 to about 5 Coresta units.

The paper layer may be formed of any cellulosic material such as paper, wood, fabric, natural as well as artificial fibers.

The paper layer may comprise a laminate of a paper layer and a metal layer. The paper layer may comprise a laminate of a paper layer and an aluminum layer. The laminate of the paper layer and the aluminum layer may have a uniform thickness ranging from about 78 μm to about 160 μm, or from about 78 μm to about 140 μm, or from about 100 μm to about 140 μm, or from about 125 μm to about 140 μm. can The laminate of the paper layer and the metal layer may not extend beyond the end of the aerosol-generating substrate.

The resistance to draw (RTD) of the aerosol-generating article after insertion in the aerosol-generating device is preferably from about 80 mm WG to about 140 mm WG, more preferably from about 100 mm WG to about 120 mm WG.

As used herein, resistance to suction is expressed in 'mm WG' or 'mm of water gauge' and is measured according to ISO 6565:2002. The resistance to draw (RTD) of the rod of the aerosol-generating substrate is preferably from about 50 mm WG to about 80 mm WG. Preferably, the RTD of the rod of the aerosol-generating substrate is from about 5 mm WG to about 8 mm WG per mm length of the rod.

All scientific and technical terms used herein have their commonly used meanings in the art unless otherwise specified. Definitions provided herein are intended to facilitate understanding of certain terms frequently used herein.

As used in this specification and the appended claims, the singular forms "a", "an", and "the" refer to examples having plural referents, unless the content clearly dictates otherwise. include

As used in this specification and the appended claims, "or" is generally used in its sense including "and/or" unless the content clearly dictates otherwise.

As used herein, “have”, “having”, “include”, “including”, “comprise”, “comprising”, etc. are open-ended. used in the sense, and generally means "including, but not limited to". It will be understood that "consisting essentially of," "consisting of," and the like are included in "comprising" and the like.

The words “preferred” and “preferably” refer to examples of the invention that may provide certain benefits under certain circumstances. However, other examples may be preferred under the same or different circumstances. Further, recitation of one or more preferred examples does not imply that other examples are not useful, nor is it intended to exclude other examples from the scope of the present disclosure, including claims.

1 is a schematic cross-sectional view of an aerosol-generating article;
FIG. 2 is a schematic cross-sectional view of an aerosol-generating substrate element along line 2-2 of FIG. 1 ;
3 is a schematic cross-sectional view of an aerosol-generating substrate element along line 3-3 of FIG. 2 ;
4 is a schematic cross-sectional view of an aerosol-generating system;
5 is a schematic cross-sectional view of a heating blade inserted into an aerosol-generating substrate element;

The aerosol-generating articles shown in FIGS. 1-5 illustrate one or more examples of an aerosol-generating article, a component of an aerosol-generating article, or an aerosol-generating system described above. The schematic drawings are not necessarily to scale and are provided for purposes of illustration and not limitation. The drawings illustrate one or more aspects described in this disclosure. However, it will be understood that other aspects not shown in the drawings are included within the scope and spirit of the present disclosure.

The aerosol-generating article 10 of FIG. 1 illustrates an aerosol-generating substrate element 12 comprising an aerosol-generating substrate 20 wrapped with a single turn of a thick paper layer 30 . The intermediate section 24 separates the filter element 22 from the aerosol-generating substrate element 12 . The aerosol-generating substrate element 12 , the intermediate section 24 , and the filter element 22 are sequentially aligned from the distal end 13 to the proximal end 11 and form a cylinder. A tipping paper or tipping wrapper 40 surrounds the aerosol-generating article 10 to couple the aerosol-generating substrate element 12 to the intermediate section 24 , and to the filter element 22 .

The middle section 24 may include one or more of a hollow cellulose acetate tube or a polylactic acid filter segment. Filter element 22 may define a mouthpiece segment and may be formed of a cellulose acetate material. The aerosol-generating substrate element 12 , the intermediate section 24 , and the filter element 22 may be individually wrapped with a layer of paper and then joined together with a tipping paper or tipping wrapper 40 . In particular, the aerosol-generating substrate element 12 is wrapped with a first paper layer 30 , as described herein.

The aerosol-generating article 10 has a mouth end or proximal end 11 and an upstream, distal end 13 located at the opposite end of the article relative to the mouth end 11 . The aerosol-generating article 10 shown in FIG. 1 is particularly suitable for use with an electrically operated aerosol-generating device comprising a heater for heating the aerosol-generating substrate element 12 .

FIG. 2 is a schematic cross-sectional view of the aerosol-generating substrate element 12 along line 2-2 of FIG. 1 . FIG. 3 is a schematic cross-sectional view of the aerosol-generating substrate element 12 along line 3-3 of FIG. 2 .

The paper layer 30 surrounds the aerosol-generating substrate 20 to define an aerosol-generating substrate element 12 having a substantially cylindrical shape. The aerosol-generating substrate 20 defines a substantially cylindrical shape having a diameter 23 ranging from about 6.8 mm to about 7.1 mm. The aerosol-generating substrate element 12 defines a substantially cylindrical shape having a diameter 33 ranging from about 7.1 mm to about 7.3 mm.

Paper layer 30 may have a thickness T in a range from about 78 μm to about 160 μm. Paper layer 30 is preferably from about 78 μm to about 140 μm, or from about 90 μm to about 140 μm, or from about 100 μm to about 140 μm, or from about 110 μm to about 140 μm, or from about 125 μm to It may have a thickness in the range of about 140 μm, or about 130 μm to about 140 μm.

Paper layer 30 has a ratio of paper thickness (T) to tobacco substrate diameter (23) ranging from about 1:120 to about 1:40, or from about 1:100 to about 1:50. The paper layer 30 may have a range from about 1:100 to about 1:40, or from about 1:75 to about 1:50, or from about 1:65 to about 1:50, or from about 1:60 to about 1:50. It may have a ratio of paper thickness to tobacco substrate element diameter 33 . The paper layer 30 does not extend beyond the opposite ends 25 . 26 of the aerosol-generating substrate 20 .

The paper layer 30 surrounds the entire circumference of the aerosol-generating substrate 20 with very little overlap area 100 of the paper layer 30 on itself. Overlap 100 forms more than one paper layer. 2 , the overlap 100 forms two paper layers.

The overlap 100 may be no more than about 20% of the circumference of the aerosol-generating substrate 20 . The overlap 100 may be no more than about 10% of the circumference of the aerosol-generating substrate 20 . The overlap 100 may be no more than about 5% of the circumference of the aerosol-generating substrate 20 . The paper layer 30 may not extend beyond the ends 25 , 26 of the aerosol-generating substrate 20 . The paper layer 30 surrounds the entire length of the aerosol-generating substrate 20 between the ends 25 , 26 of the aerosol-generating substrate 20 .

2 illustrates a paper layer 30 forming substantially a single turn or single layer around the circumference of the aerosol-generating substrate 20 . At least about 80%, or at least about 90%, or at least about 95% of the circumference of the aerosol-generating substrate 20 is surrounded by less than two paper layers 30 . At least about 80%, or at least about 90%, or at least about 95% of the circumference of the aerosol-generating substrate 20 does not extend beyond the length or ends 25 , 26 of the aerosol-generating substrate 20 . surrounded by layer 30 . At least about 80%, or at least about 90%, or at least about 95% of the circumference of the aerosol-generating substrate 20 has less than two surrounding aerosol-generating substrate 20 along substantially the length of the aerosol-generating substrate 20 . surrounded by a paper layer 30 .

4 is a schematic cross-sectional view of an aerosol-generating system 201 . 5 is a schematic cross-sectional view of a heating blade 230 inserted within an aerosol-generating substrate element 12 . The aerosol-generating article 10 may be used with an aerosol-generating device 200 as illustrated in FIGS. 4 and 5 .

The aerosol-generating device 200 includes a housing 210 defining a receptacle 220 , which is configured to receive an aerosol-generating article 10 . The aerosol-generating device 200 also includes a heating blade element 230 configured to puncture the aerosol-generating substrate element 12 of the aerosol-generating article 10 . The heating blade element 230 may include an electrically resistive heating component. The apparatus 200 also includes a power source 240 and control electronics 250 that cooperate to control the heating of the heating blade element 230 .

The aerosol-generating article 10 illustrates an aerosol-generating substrate element 12 , an intermediate section 24 , and a filter element 22 arranged sequentially from the distal end 13 to the proximal end 11 and forming a cylinder . This is the distal end 13 of the aerosol-generating article 10 . The aerosol-generating substrate 12 has a length of about 12 mm. The aerosol-generating substrate 12 is cylindrical in shape and has a substantially circular cross-section. The aerosol-generating substrate 12 may comprise a corrugated sheet of homogenised tobacco material. The sheet of homogenised tobacco material may comprise about 10% by weight on a dry weight basis of glycerin. The middle section 24 may be a hollow cellulose acetate tube having a length of about 8 mm and a thickness of 1 mm. The mouthpiece segment or filter element 22 may include a plug of cellulose acetate tow of 8 denier per filament and have a length of about 7 mm.

5 illustrates a heating blade element 230 disposed within an aerosol-generating substrate 12 . The heating blade element 230 can heat the aerosol-generating substrate 12 of the aerosol-generating article 10 . Heating the aerosol-generating substrate 12 causes the aerosol-generating substrate 12 to generate an aerosol containing nicotine, which can be delivered out of the aerosol-generating article 10 at the proximal end 11 .

The heating blade element 230 may have a width 233 of about 5 mm. The aerosol-generating substrate 20 defines a substantially cylindrical shape having a diameter 23 ranging from about 6.8 mm to about 7.1 mm. The aerosol-generating substrate element 12 defines a substantially cylindrical shape having a diameter 33 ranging from about 7.1 mm to about 7.3 mm. The heating blade element 230 may rest within about 1 mm from the paper layer 30 .

In some examples, the heating mechanism is configured to induce the heating element to emit radio magnetic radiation that is absorbed by the one or more metal induction heating elements when the aerosol-generating article 10 is positioned in the receptacle 220 of the aerosol-generating device 200 . may be due to

의 온도로 에어로졸 발생 기재(12)를 가열하도록 작동된다. 사용자가 에어로졸 발생 물품(10)의 마우스 단부(11)를 흡인함에 따라, 에어로졸 발생 기재(12)로부터 방출된 휘발성 화합물은 에어로졸 발생 물품(10)을 통해 하류로 흡인되고 응축해서 에어로졸 발생 물품(10)의 마우스피스(11)를 통해 사용자의 입 속으로 흡인되는 에어로졸을 형성한다.Once the aerosol-generating article 10 is removably received within the aerosol-generating device 200 and within the heating blade element 230 , the aerosol-generating device 200 is approximately 375

is operated to heat the aerosol-generating substrate 12 to a temperature of As the user inhales the mouth end 11 of the aerosol-generating article 10 , the volatile compound released from the aerosol-generating substrate 12 is drawn downstream through the aerosol-generating article 10 and condenses to condense into the aerosol-generating article 10 . ) to form an aerosol that is sucked into the user's mouth through the mouthpiece 11.

The illustrative examples described above are not limiting. Other examples consistent with the illustrative examples described above will be apparent to those skilled in the art.

Claims (17)

An aerosol-generating substrate element comprising:
an aerosol-generating substrate comprising a glycerin content of about 10% to about 30%; and
at least one paper layer surrounding the aerosol-generating substrate, wherein the paper layer has a thickness in the range of about 78 μm to about 160 μm, and at least about 80% of the circumference of the aerosol-generating substrate is less than two paper layers. an aerosol-generating substrate element surrounded by The paper layer of claim 1 , wherein the paper layer is from about 78 μm to about 140 μm, or from about 90 μm to about 140 μm, or from about 100 μm to about 140 μm, or from about 110 μm to about 140 μm, or from about 125 μm to An aerosol-generating substrate element having a paper thickness ranging from about 140 μm, or from about 130 μm to about 140 μm. The aerosol-generating substrate element according to claim 1 , wherein the paper layer does not extend beyond an end of the aerosol-generating substrate. 4. The aerosol-generating substrate element of any one of claims 1 to 3, wherein at least about 90%, or at least about 95% of the circumference of the aerosol-generating substrate is surrounded by less than two layers of paper. 5. The method of any one of claims 1 to 4, wherein at least about 90%, or at least about 95% of the circumference of the aerosol-generating substrate is achieved by less than two layers of paper that do not extend beyond the length of the aerosol-generating substrate. Enclosed, an aerosol-generating substrate element. 6. The aerosol-generating substrate of any one of claims 1-5, wherein at least about 80%, or at least about 90%, or at least about 95% of the circumference of the aerosol-generating substrate is substantially along the length of the aerosol-generating substrate. An aerosol-generating substrate element surrounded by less than two layers of paper surrounding the substrate. The aerosol-generating substrate element according to claim 1 , wherein the aerosol-generating substrate defines a substantially cylindrical shape. 8. The aerosol-generating substrate of any one of claims 1-7, wherein the aerosol-generating substrate defines a substantially cylindrical shape having a diameter ranging from about 6.8 mm to about 7.1 mm, or from about 6.8 mm to about 7.0 mm. substrate element. 9. The method of any one of claims 1 to 8, wherein the at least one paper layer is from about 1:120 to about 1:40, or from about 1:100 to about 1:50, or from about 1:70 to about 1 :50, or an aerosol-generating substrate element having a ratio of paper thickness to tobacco substrate diameter in the range of about 1:60 to about 1:50. 10. An aerosol-generating substrate element according to any one of the preceding claims, wherein the aerosol-generating substrate comprises a homogenised tobacco material. 11. The aerosol-generating substrate element of claim 10, wherein the tobacco homogenized tobacco material comprises tobacco material that is from about 1% to about 5% binder, and from about 10% to about 30% glycerin by dry weight. 12. An aerosol-generating substrate element according to claim 10 or 11, wherein the aerosol-generating substrate comprises a corrugated sheet of homogenised tobacco material, which is preferably crimped. 13. The aerosol-generating substrate element according to any one of the preceding claims, wherein the aerosol-generating substrate comprises a metal induction heating element. 14. The aerosol-generating substrate element according to any one of the preceding claims, wherein the aerosol-generating substrate comprises a plurality of metal induction heating elements. 15. The method according to any one of claims 1 to 14, wherein the The aerosol-generating substrate element is configured to directly heat the aerosol-generating substrate without transferring heat to the aerosol-generating substrate through the at least one paper layer. 16. The aerosol-generating substrate element according to any one of the preceding claims, wherein the paper layer forms a laminate with the aluminum layer. 17. The aerosol-generating substrate element according to any one of claims 1 to 16, wherein the aerosol-generating substrate element is configured to receive a resistive heating blade inserted within the aerosol-generating substrate.

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