JP2023503823A - Aerosol-generating substrate element with thick paper - Google Patents

Abstract

The aerosol-generating substrate element comprises an aerosol-generating substrate having a glycerin content of about 10% to about 30% and at least one paper layer surrounding the aerosol-generating substrate. The paper layer has a thickness within the range of about 78 micrometers to about 160 micrometers. At least about 80% of the perimeter of the aerosol-generating substrate is surrounded by less than two layers of paper. [Selection drawing] Fig. 2

Description

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

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

The paper used to wrap the aerosol-generating substrate and form the aerosol-generating element may contain aerosol formers, water, and other liquid compounds found in mainstream smoke or aerosols passing through the aerosol-generating article, or the paper's surroundings. can absorb moisture or moisture in Absorbed liquids can stain or weaken the paper and adversely affect the appearance and structural integrity of the aerosol-generating article. Heated aerosol-generating articles are particularly prone to wetting and breakage due to the high amount of aerosol formers in the aerosol-generating substrates of these heated aerosol-generating articles. Heated aerosol-generating articles are particularly prone to swelling when the aerosol component is absorbed by the wrapper, leading to difficult removal 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. A resistive heating blade may provide a local heat source within the aerosol-generating substrate, which may be located along the central axis of the aerosol-generating substrate. Aerosol-generating substrates located around the perimeter of the paper wrapper or interface with the paper wrapper may not be sufficiently heated by the centrally located resistive heating blade, resulting in unused aerosol-generating substrates within the aerosol-generating element. may be brought about.

Particularly in the case of heated non-combustible aerosol-generating substrates containing high amounts of liquid or aerosol formers, it would be desirable to provide visually and mechanically stable aerosol-generating substrate elements. 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 within the aerosol-generating element.

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

When in close proximity to a heating element, it would also be desirable that the wrapper not readily combust or adversely affect heating of the heated non-combustible aerosol-generating substrate.

An object of the present invention may be to solve, at least in part, one or more of the desirable technical advantages set forth above.

According to the present disclosure, an aerosol-generating substrate element is provided that includes an aerosol-generating substrate and at least one paper layer surrounding the aerosol-generating substrate. The paper layer has a thickness within the range of about 78 micrometers to about 160 micrometers.

The aerosol-generating substrate element preferably comprises an aerosol-generating substrate having a glycerin content of 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 micrometers to about 160 micrometers, and at least about 80% of the perimeter of the aerosol-generating substrate is surrounded by less than two paper layers.

The paper layer preferably has a paper thickness within the range of about 78 micrometers to about 140 micrometers, or about 100 micrometers to about 140 micrometers, or about 125 micrometers to about 140 micrometers. The paper layer preferably has a paper thickness within the range of about 90 micrometers to about 140 micrometers, or about 110 micrometers to about 140 micrometers, or about 130 micrometers to about 140 micrometers.

The paper layer does not have to extend beyond the edge of the aerosol-generating substrate.

Preferably, at least about 80%, or at least about 90%, or at least about 95% of the perimeter of the aerosol-generating substrate may be surrounded by less than two layers of paper. It is preferred that no more than two paper layers extend beyond the length of the aerosol-generating substrate. At least about 80%, or at least about 90%, or at least about 95% of the perimeter of the aerosol-generating substrate is surrounded by less than two paper layers that surround the aerosol-generating substrate substantially along the length of the aerosol-generating substrate. preferably

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

The paper layer has a It may have a ratio of paper thickness to tobacco substrate diameter.

The aerosol-generating substrate may comprise homogenized tobacco material. The homogenized tobacco material may comprise tobacco material, about 1 percent to about 5 percent binder, and about 5 percent to about 30 percent aerosol former on a dry weight basis. The aerosol-generating substrate may comprise an assembly of sheets of homogenized tobacco material, preferably crimped.

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 through the at least one paper layer to the aerosol-generating substrate.

Advantageously, aerosol-generating substrate elements comprising a single thick paper layer are visually and mechanically stable, especially in the case of heated non-combustible aerosol-generating substrates containing high amounts of liquid or aerosol formers. An aerosol-generating substrate element may be provided. As a result, swelling, visible smearing, and physical weakening of the wrapper portion of the aerosol-generating article may be reduced, even when high amounts of wetting agents are included in the aerosol-generating substrate.

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

Advantageously, an aerosol-generating substrate element comprising a single thick paper layer can be uniformly heated and increase the amount of aerosol-generating substrate consumed, thus resulting in unused or wasted aerosol. Reduce generated substrate material.

Advantageously, the aerosol-generating substrate element comprising a single thick paper layer provides internal heating of the aerosol-generating substrate via induction or resistance heating elements embedded or interposed within the aerosol-generating substrate. A thick paper wrapping the aerosol-generating substrate may also be utilized and may not adversely affect the heating of the heated non-combustible aerosol-generating substrate.

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 localized heat provided by the flame and the oxygen in the air drawn through the cigarette ignites the ends of the cigarette and the resulting combustion produces inhalable smoke. In contrast, in heated aerosol-generating articles, the aerosol is generated by heating the 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 aerosol is generated by the transfer of heat from a combustible fuel element or heat source to a physically separate aerosol-forming substrate. and 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. be. Aerosol-generating articles of this type are described in the prior art, for example in EP0822670.

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

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

As used herein, the term "aerosol-generating article" refers to an article that includes 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 mean 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 material capable of generating or emitting an aerosol. Aerosol-generating substrates may be solids, pastes, gels, slurries, liquids, or may comprise any combination of solids, pastes, gels, slurries, and liquid compounds. Preferably, the aerosol-generating substrate is a solid or gel composition. The aerosol-generating substrate may preferably contain nicotine.

The term "mouthpiece" is used herein to denote that portion of the aerosol-generating article that is designed to contact the consumer's mouth. The mouthpiece may be part of the aerosol-generating article, which may include a filter, or in some cases the mouthpiece may be defined by the extent of the tipping wrapper.

The terms "upstream" and "downstream" refer to the relative positions of the elements of the aerosol-generating article described in relation 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 thick layer of paper. The aerosol-generating substrate element includes an aerosol-generating substrate and at least one paper layer surrounding the aerosol-generating substrate. The single thick paper layer preferably does not extend beyond the edge of the aerosol-generating substrate.

The paper layer has a thickness within the range of about 78 micrometers to about 160 micrometers. The paper layer preferably has a paper thickness within the range of about 78 micrometers to about 140 micrometers, or about 100 micrometers to about 140 micrometers, or about 125 micrometers to about 140 micrometers. The paper layer does not have to extend beyond the edge of the aerosol-generating substrate.

The paper layer preferably has a paper thickness within the range of about 90 micrometers to about 140 micrometers, or about 110 micrometers to about 140 micrometers, or about 130 micrometers to about 140 micrometers. The paper layer does not have to extend beyond the edge of the aerosol-generating substrate. Conventionally rolled tobacco substrates may have a paper thickness within the range of about 20 micrometers to about 25 micrometers.

Preferably, at least about 80%, or at least about 90%, or at least about 95% of the perimeter of the aerosol-generating substrate may be surrounded by less than two layers of paper. It is preferred that no more than two paper layers extend beyond the length of the aerosol-generating substrate. Preferably, less than two paper layers do not extend beyond the edge of the aerosol-generating substrate. At least about 80%, or at least about 90%, or at least about 95% of the perimeter of the aerosol-generating substrate is surrounded by less than two paper layers that surround the aerosol-generating substrate substantially along the length of the aerosol-generating substrate. preferably

The paper layer surrounds the entire perimeter of the aerosol-generating substrate with little overlap of the paper layer itself. The overlapping regions form two or more paper layers, eg two layers.

The overlap may be about 20% or less around the aerosol-generating substrate. The overlap may be about 10% or less around the aerosol-generating substrate. The overlap may be about 5% or less of the perimeter of the aerosol-generating substrate. Reducing paper overlap may help prevent or minimize spaces or air pockets defined between paper layers in the overlap region.

The paper layer does not have to extend beyond the edge of the aerosol-generating substrate. The paper layer preferably surrounds the entire length of the aerosol-generating substrate between the ends of the aerosol-generating substrate. The paper layer preferably encloses the entire length of the aerosol-generating substrate between the ends of the aerosol-generating substrate and does not extend beyond one or both edges of the aerosol-generating substrate.

The paper layer may surround the aerosol-generating substrate to define an aerosol-generating substrate element having a substantially cylindrical shape. The aerosol-generating substrate may define a substantially cylindrical shape having a diameter within the range of about 6.8 mm to about 7.1 mm. The aerosol-generating substrate element may define a substantially cylindrical shape having a diameter within the range of about 7.1 mm to about 7.3 mm.

The paper layer may surround the aerosol-generating substrate to define an aerosol-generating substrate element having a substantially cylindrical shape. The aerosol-generating substrate may define a substantially cylindrical shape having a diameter within the range of about 6.8 mm to about 7.0 mm. The aerosol-generating substrate element may define a substantially cylindrical shape having a diameter within the range of about 7.15mm to about 7.25mm.

The at least one paper layer has a It may have a ratio of paper thickness to tobacco substrate diameter within a range. Conventionally rolled tobacco substrates may have a paper thickness to tobacco substrate diameter ratio of about 1:300.

The at least one paper layer has a It may have a ratio of paper thickness to diameter of the tobacco substrate element within a range. Conventionally rolled tobacco substrates may have a paper thickness to tobacco substrate element diameter ratio of about 1:300.

The aerosol-generating substrate element comprises an aerosol-generating substrate having a diameter within the range of about 6.8 mm to about 7.1 mm and a single body having a thickness within the range of about 78 micrometers to 140 micrometers surrounding the aerosol-generating substrate. and at least 80% or at least 90% of the perimeter of the aerosol-generating substrate is surrounded by less than two paper layers. This single paper layer preferably does not extend beyond the edge of the aerosol-generating substrate. This single paper layer preferably surrounds the entire length of the aerosol-generating substrate.

The aerosol-generating substrate element comprises an aerosol-generating substrate having a diameter within the range of about 6.8 mm to about 7.1 mm and a single body having a thickness within the range of about 100 micrometers to 140 micrometers surrounding the aerosol-generating substrate. and less than 20% or less than 10% of the circumference of the aerosol-generating substrate is surrounded by overlapping paper layers. This single paper layer preferably does not extend beyond the edge of the aerosol-generating substrate. This single paper layer preferably surrounds the entire length of the aerosol-generating substrate.

The aerosol-generating substrate element comprises an aerosol-generating substrate element having a diameter within the range of about 7.15 mm to about 7.25 mm and a unit having a thickness within the range of about 100 micrometers to 140 micrometers surrounding the aerosol-generating substrate. Preferably, less than 20% or less than 10% of the circumference of the aerosol-generating substrate is surrounded by overlapping paper layers. This single paper layer preferably does not extend beyond the edge of the aerosol-generating substrate. This single paper layer preferably 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 perimeter of the aerosol-generating substrate is Surrounded by less than two layers of paper. This single paper layer preferably does not extend beyond the edge of the aerosol-generating substrate. This single paper layer preferably surrounds the entire length of the aerosol-generating substrate. Preferably, the ratio of paper thickness to tobacco substrate diameter is in the range of about 1:120 to about 1:40, or 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 :50.

The aerosol-generating article may comprise an aerosol-generating substrate element and a mouthpiece. The mouthpiece may be equipped with a filter. A tipping wrapper may bond 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 up to 25% downstream of the aerosol-generating substrate element.

The aerosol-generating substrate may be a solid composition. The composition may include plant-based material. The aerosol-generating substrate may comprise tobacco, and the tobacco preferably contains volatile tobacco flavor compounds that are released from the aerosol-generating substrate upon heating. Aerosol-generating substrates may include homogenized tobacco materials, aerosol formers, and binders.

Nicotine may be present in the aerosol-generating substrate within 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 to about 3 weight percent nicotine, or from about 1.5 to about 2.5 weight percent nicotine, or from about 2 weight percent nicotine.

The aerosol-generating substrate may comprise any suitable type(s) of tobacco material or substitute in any suitable form. The aerosol-generating substrate may comprise full-cure tobacco, burley tobacco, Maryland tobacco, oriental tobacco, specialty tobacco, homogenized or reconstituted tobacco, or any combination thereof. Aerosol-generating substrates include tobacco cut fillers, tobacco blades, processed tobacco materials such as volume expanded or puffed tobacco, processed tobacco stems such as cut rolled or cut puffed stems, homogenized tobacco, reconstituted tobacco, cast leaves. It may also be provided in the form of tobacco, or blends thereof, and the like. The term "tobacco cut filler" is used herein to denote tobacco material that is primarily formed from the lamina portion of tobacco leaves. The term "tobacco cut filler" is used herein to indicate both a single species of Nicotiana and two or more species of Nicotiana that form a tobacco cut filler blend.

As used herein, the term "homogenized tobacco" means material formed by agglomerating particulate tobacco. Homogenized tobacco may comprise 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-products such as tobacco fines, tobacco dust, tobacco stems, or mixtures of the foregoing. Reconstituted tobacco is produced by extracting soluble chemicals in tobacco by-products, processing the remaining tobacco fibers into a sheet, and then reapplying the extracted material in a concentrated form onto the sheet. can be made. The term "cast leaf tobacco" is used herein to cast a slurry comprising ground tobacco particles and a binder (e.g., guar) onto a support surface (such as a belt conveyor), dry the slurry, Used to refer to the product resulting from a process well known in the art based on removing a dried sheet from a supporting surface. Exemplary methods for making these types of aerosol-generating substrates are described in U.S. Pat. Nos. 5,724,998; 5,584,306; 584,306 and 6,216,706. The homogenized tobacco may be crimped, rolled, folded, or otherwise compressed to form a sheet before rolling to form a rod. For example, the homogenized sheets of tobacco material used in the present invention may be crimped using a crimping unit of the type described in Swiss Patent No. A-691156 comprising a pair of rotatable crimping rollers. . It should be appreciated, however, that the homogenized tobacco material sheet for use in the present invention may be textured using other suitable machinery and processes to deform or perforate the homogenized tobacco material sheet. good.

Aerosol-generating substrates used in aerosol-generating articles generally contain higher amounts of aerosol former(s) than combustible smoking articles such as cigarettes. Wetting agents can also be referred to as "aerosol formers." Aerosol former describes any suitable known compound or mixture of compounds that facilitates the formation of an aerosol in use and that is substantially resistant to thermal decomposition at the temperature of use of the aerosol-generating substrate. used for Suitable aerosol formers are well known in the art and include polyhydric alcohols (propylene glycol, triethylene glycol, 1,3-butanediol, glycerin, etc.), esters of polyhydric alcohols (glycerin monoacetate, diacetate , triacetate, etc.), and aliphatic esters of monocarboxylic, dicarboxylic, or polycarboxylic acids (dimethyl dodecanedioate, dimethyl tetradecanedioate, etc.). Preferred aerosol formers are polyhydric alcohols or mixtures thereof (propylene glycol, triethylene glycol, 1,3-butanediol, etc.), most preferably glycerin or glycerin. 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 amount of aerosol formers. As used herein, a high amount of aerosol former means an aerosol former content greater than about 10%, or preferably greater than about 15%, or more preferably greater than about 20% by weight. means The aerosol-generating substrate can also have an aerosol former content of about 10% to about 30%, about 15% to about 30%, or about 20% to about 30% by weight. Preferably, the aerosol-generating substrate has a glycerin content of about 10% to about 30%, about 15% to about 30%, or 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 aerosol former. The aerosol-generating substrate may comprise an aerosol former within the range of about 1 to about 20 weight percent, or about 5 to about 20 weight percent, or about 10 to about 20 weight percent.

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 glycerin. The aerosol-generating substrate may comprise glycerin within the range of about 1 to about 20 weight percent, or about 5 to about 20 weight percent, or about 10 to about 20 weight percent.

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

The aerosol-generating substrate may contain flavorants. The plant material provides a flavoring agent that may impart flavor to the taste of the aerosol generated by the aerosol-generating article. A flavoring agent is any natural or man-made compound that affects the organoleptic qualities of an aerosol. Non-limiting examples of sources of flavoring agents 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 essential oils. Essential oils may provide flavorants that may impart 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 wt%, or at least about 0.5 wt%, or at least about 1 wt%. The essential oil is present in the aerosol-generating substrate within the range of about 0.1% to about 10%, or about 0.1% to about 5%, or about 0.5% to about 2% by weight. You may

The aerosol-generating substrate may comprise homogenized tobacco material. The homogenized tobacco material may comprise tobacco material, about 1 percent to about 5 percent binder, and about 5 percent to about 30 percent aerosol former on a dry weight basis. Homogenized tobacco sheets for use in the aerosol-generating articles of the present invention may be made by methods well known in the art, such as those disclosed in WO-A-201 2/1 64009 A2. In one preferred embodiment, a sheet of homogenized tobacco material for use in an aerosol-generating article is formed by a casting process from a slurry comprising tobacco particulate, guar gum, cellulosic fibers, and glycerin.

The aerosol-generating substrate may comprise an assembly of sheets of homogenized tobacco material, preferably crimped. As used herein, the term "crimped" means a sheet having a plurality of substantially parallel ridges or corrugations. The substantially parallel ridges or corrugations preferably extend along or parallel to the longitudinal axis of the aerosol-generating article when the aerosol-generating article is assembled.

The aerosol-generating system comprises a heat source, an aerosol-generating substrate, 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. good too. The heat source may be integral with the aerosol-generating device, and the consumable aerosol-generating article may be releasably 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 be an electrical heat source, preferably configured 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 thus may 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 through the at least one paper layer to the aerosol-generating substrate.

The aerosol-generating substrate may include an induction heating element or susceptor, or multiple induction heating elements or susceptors. An induction heating element or susceptor heats in the presence of an alternating or fluctuating electromagnetic field. When heating is by induction heating, the fluctuating electromagnetic field is transmitted through the aerosol-generating article to an induction heating element or susceptor, which converts the fluctuating field into thermal energy, thus heating the aerosol-generating substrate.

The induction heating element or susceptor may be formed from any material that can be inductively heated to a temperature sufficient to generate an aerosol from the aerosol-generating substrate. The induction heating element or susceptor may contain metal or carbon. A preferred induction heating element or susceptor may comprise a ferromagnetic material (eg 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 from 400 series stainless steel, such as grade 410, or grade 420, or grade 430 stainless 20 steel. Different materials dissipate different amounts of energy when placed in electromagnetic fields having similar values of frequency and field strength. The induction heating element or susceptor is preferably heated to a temperature in excess of 250 degrees Celsius. However, the induction heating element or susceptor is preferably heated to less than 350 degrees Celsius to prevent burning of materials 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 include a metal induction heating ring element.

This paper layer may exhibit a range of permeability, including no permeability. The permeability of cigarette paper is determined using the international standard test method ISO 2965:2009, and the results are expressed in cubic centimeters per minute per square centimeter, referred to as "Coresta units." The permeability of the wrappers described herein may be in the range of about 1 to about 10 Coresta units, about 5 to about 20 Coresta units, or about 1 to about 5 Coresta units.

The paper layer may be formed from any cellulosic material such as paper, wood, textiles, natural fibers and man-made fibers.

A 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 has a thickness of from about 78 micrometers to about 160 micrometers, or from about 78 micrometers to about 140 micrometers, or from about 100 micrometers to about 140 micrometers, or from about 125 micrometers to about 140 micrometers. It may have a uniform thickness in the range of meters. The paper layer and metal layer laminate may not extend beyond the edge of the aerosol-generating substrate.

The withdrawal resistance (RTD) of the aerosol-generating article after insertion into the aerosol-generating device is preferably from about 80 mmWG to about 140mmWG, more preferably from about 100mmWG to about 120mmWG.

As used herein, withdrawal resistance is expressed in units of pressure "mmWG" or "millimeters of water column" and is measured according to ISO 6565:2002. Preferably, the rod withdrawal resistance (RTD) of the aerosol-generating substrate is between about 50 mm WG and about 80 mm WG. Preferably, the RTD of the aerosol-generating substrate rod is between about 5 mm WG and about 8 mm WG per millimeter of rod length.

All scientific and technical terms used herein have meanings commonly used in the art unless otherwise specified. The definitions provided herein are provided 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 embodiments having plural referents. including, unless the content clearly stipulates otherwise.

As used in this specification and the appended claims, the term "or" is generally used in its sense to include "and/or," unless the context clearly dictates otherwise. isn't it.

As used herein, "have", "having", "include", "including", "comprise", "comprising", or The like is used in its open-ended sense and generally means "including, but not limited to." It should be understood that "consisting essentially of," "consisting of," and the like are subsumed in "comprising" and the like.

The terms "preferred" and "preferably" refer to embodiments of the invention that may provide certain advantages, under certain circumstances. However, other embodiments may also be preferred under the same or other circumstances. Moreover, the recitation of one or more preferred embodiments is not intended to imply that other embodiments are not useful or exclude other embodiments from the scope of the present disclosure, including the claims. not intended to

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

The aerosol-generating articles illustrated in FIGS. 1-5 illustrate one or more embodiments of the aerosol-generating articles, components of aerosol-generating articles, or aerosol-generating systems described above. Schematic drawings are not necessarily to scale and are presented for purposes of illustration and not limitation. The drawings illustrate one or more aspects described in the present disclosure. It should be appreciated, however, that other aspects not shown in the drawings are within the scope and spirit of the disclosure.

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

Middle section 24 may comprise one or more of hollow cellulose acetate tubes or polylactic acid filter segments. Filter element 22 may define a mouthpiece segment and may be formed from a cellulose acetate material. The aerosol-generating substrate element 12 , intermediate section 24 , and filter element 22 may be individually wrapped with paper layers and then bonded together with tipping paper or tipping wrapper 40 . Specifically, the aerosol-generating substrate element 12 is wrapped with a paper layer 30 as described herein.

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

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

A paper layer 30 surrounds the aerosol-generating substrate 20 to define the substantially cylindrically shaped aerosol-generating substrate element 12 . Aerosol-generating substrate 20 defines a substantially cylindrical shape having a diameter 23 within the range of about 6.8 mm to about 7.1 mm. Aerosol-generating substrate element 12 defines a substantially cylindrical shape having a diameter 33 within the range of about 7.1 mm to about 7.3 mm.

Paper layer 30 has a thickness T in the range of about 78 micrometers to about 160 micrometers. The paper layer 30 is preferably about 78 micrometers to about 140 micrometers, or about 90 micrometers to about 140 micrometers, or about 100 micrometers to about 140 micrometers, or about 110 micrometers to about 140 micrometers, Or it may have a thickness within the range of about 125 micrometers to about 140 micrometers, or about 130 micrometers to about 140 micrometers.

The paper layer 30 has a ratio of paper thickness T to tobacco substrate diameter 23 within the range of about 1:120 to about 1:40, or about 1:100 to about 1:50. The paper layer 30 is in the range of about 1:100 to about 1:40, or about 1:75 to about 1:50, or about 1:65 to about 1:50, or about 1:60 to about 1:50. to the diameter 33 of the tobacco substrate element. Paper layer 30 does not extend beyond either edge 25 , 26 of aerosol-generating substrate 20 .

The paper layer 30 surrounds the entire perimeter of the aerosol-generating substrate 20 with little overlap 100 of the paper layer 30 itself. The overlapping 100 areas form two or more paper layers. In FIG. 2, overlap 100 forms two layers of paper.

Overlap 100 may be about 20% or less of the perimeter of aerosol-generating substrate 20 . Overlap 100 may be about 10% or less of the perimeter of aerosol-generating substrate 20 . Overlap 100 may be about 5% or less of the perimeter of aerosol-generating substrate 20 . The paper layer 30 does not have to extend beyond the edges 25 , 26 of the aerosol-generating substrate 20 . Paper layer 30 surrounds the entire length of aerosol-generating substrate 20 between ends 25 and 26 of aerosol-generating substrate 20 .

FIG. 2 illustrates a paper layer 30 forming a substantially single layer or single layer around the perimeter of the aerosol-generating substrate 20 . At least about 80%, or at least about 90%, or at least about 95% of the perimeter of aerosol-generating substrate 20 is surrounded by less than two layers of paper 30 . At least about 80%, or at least about 90%, or at least about 95% of the perimeter of the aerosol-generating substrate 20 is covered by less than two paper layers 30 that do not extend beyond the length or edges 25, 26 of the aerosol-generating substrate 20. being surrounded. 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 layers of paper surrounding the aerosol-generating substrate 20 substantially along the length of the aerosol-generating substrate 20 Surrounded by layer 30 .

FIG. 4 is a schematic cross-sectional view of the aerosol generation system 201. As shown in FIG. FIG. 5 is a schematic cross-sectional view of heating blade 230 inserted into 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. FIG.

Aerosol-generating device 200 includes a housing 210 defining a receptacle 220 configured to receive aerosol-generating article 10 . The aerosol-generating device 200 also includes a heating blade element 230 configured to penetrate the aerosol-generating substrate element 12 of the aerosol-generating article 10 . Heating blade element 230 may comprise an electrical resistance heating component. Additionally, apparatus 200 includes a power supply 240 and control electronics 250 that cooperate to control the heating of heating blade element 230 .

Aerosol-generating article 10 illustrates aerosol-generating substrate element 12, intermediate section 24, and filter element 22 aligned in order from distal end 13 to proximal end 11 to form a cylinder. Distal end 13 of aerosol-generating article 10 . Aerosol-generating substrate 12 has a length of about 12 millimeters. Aerosol-generating substrate 12 is cylindrical in shape and has a substantially circular cross-section. Aerosol-generating substrate 12 may comprise a collection of sheets of homogenized tobacco material. The sheet of homogenized tobacco material may comprise about 10 weight percent glycerin on a dry basis. Middle section 24 may be a hollow cellulose acetate tube having a length of approximately eight millimeters and a thickness of one millimeter. The mouthpiece segment or filter element 22 may comprise a plug of 8 denier cellulose acetate tow per filament and has a length of about 7 millimeters.

FIG. 5 illustrates a heating blade element 230 positioned within the aerosol-generating substrate 12,20. The heating blade element 230 may heat the aerosol-generating substrate 12 of the aerosol-generating article 10 . Heating aerosol-generating substrate 12 causes an aerosol containing nicotine to be generated in aerosol-generating substrate 12 , which aerosol can travel out of aerosol-generating article 10 at proximal end 11 .

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

In some embodiments, the heating mechanism emits wireless magnetic radiation that is absorbed by one or more metal induction heating elements when the aerosol-generating article 10 is positioned within the receptacle 220 of the aerosol-generating device 200 . It may be by the guidance that emits.

When the aerosol-generating article 10 is releasably received within the aerosol-generating device 200 and on the heating blade element 230, the aerosol-generating device 200 operates to heat the aerosol-generating substrate 12 to a temperature of approximately 375 degrees Celsius. . When the user sucks on the mouth end 11 of the aerosol-generating article 10, the volatile compounds released from the aerosol-generating substrate 12 are drawn downstream through the aerosol-generating article 10 and condense to form the mouthpiece of the aerosol-generating article 10. Forms an aerosol that is drawn through 11 into the user's mouth.

The exemplary embodiments described above are non-limiting. Other implementations consistent with the illustrative implementations described above will be apparent to those skilled in the art.

Claims (17)

an aerosol-generating substrate comprising a glycerin content of about 10% to about 30%;
at least one paper layer surrounding the aerosol-generating substrate, wherein the paper layer has a thickness ranging from about 78 micrometers to about 160 micrometers, and at least about 80% of the perimeter of the aerosol-generating substrate is bilayer at least one paper layer surrounded by less than one paper layer. The paper layer is about 78 micrometers to about 140 micrometers, or about 90 micrometers to about 140 micrometers, or about 100 micrometers to about 140 micrometers, or about 110 micrometers to about 140 micrometers, or about 2. The aerosol-generating substrate element of claim 1, having a paper thickness within the range of 125 micrometers to about 140 micrometers, or about 130 micrometers to about 140 micrometers. The aerosol-generating substrate element of any of claims 1-2, wherein the paper layer does not extend beyond the edges of the aerosol-generating substrate. The aerosol-generating substrate element of any of claims 1-3, wherein at least about 90%, or at least about 95% of the perimeter of the aerosol-generating substrate is surrounded by less than two layers of paper. 5. Any of claims 1-4, wherein at least about 90%, or at least about 95% of the perimeter of the aerosol-generating substrate is surrounded by less than two layers of paper that do not extend beyond the length of the aerosol-generating substrate. An aerosol-generating substrate element according to any one of the preceding claims. at least about 80%, or at least about 90%, or at least about 95% of the perimeter of said aerosol-generating substrate less than two layers of paper surrounding said aerosol-generating substrate substantially along the length of said aerosol-generating substrate; An aerosol-generating substrate element according to any one of claims 1 to 5, surrounded by. An aerosol-generating substrate element according to any preceding claim, wherein the aerosol-generating substrate defines a substantially cylindrical shape. 8. The aerosol-generating substrate of claims 1-7, wherein the aerosol-generating substrate defines a substantially cylindrical shape having a diameter within the range of about 6.8 mm to about 7.1 mm, or about 6.8 mm to about 7.0 mm. An aerosol-generating substrate element according to any of the preceding claims. The at least one paper layer is about 1:120 to about 1:40, or about 1:100 to about 1:50, or about 1:70 to about 1:50, or about 1:60 to about 1:50 An aerosol-generating substrate element according to any preceding claim, having a ratio of paper thickness to tobacco substrate diameter within the range of . An aerosol-generating substrate element according to any preceding claim, wherein the aerosol-generating substrate comprises homogenized tobacco material. 11. The aerosol-generating substrate of claim 10, wherein the homogenized tobacco material comprises tobacco material, about 1 percent to about 5 percent binder, and about 10 percent to about 30 percent glycerin on a dry weight basis. element. 12. An aerosol-generating substrate element according to claim 10 or claim 11, wherein the aerosol-generating substrate comprises an assembly of sheets of homogenized tobacco material, preferably crimped. The aerosol-generating substrate element of any of claims 1-12, wherein the aerosol-generating substrate comprises a metal induction heating element. The aerosol-generating substrate element of any of claims 1-13, wherein the aerosol-generating substrate comprises a plurality of metal induction heating elements. 15. Any of claims 1-14, wherein 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. An aerosol-generating substrate element as described. An aerosol-generating substrate element according to any preceding claim, wherein said paper layer forms a laminate with an aluminum layer. 17. The aerosol-generating substrate element of any of claims 1-16, wherein the aerosol-generating substrate element is configured to receive a resistively heated blade inserted into the aerosol-generating substrate.

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