WO2023118236A1

WO2023118236A1 - Aerosol-generating article comprising a heat-conductive or inductively-heatable wrapper

Info

Publication number: WO2023118236A1
Application number: PCT/EP2022/087129
Authority: WO
Inventors: Rui Nuno Rodrigues Alves BATISTA; Ricardo CALI; Marios Georgiou
Original assignee: Philip Morris Products S.A.
Priority date: 2021-12-23
Filing date: 2022-12-20
Publication date: 2023-06-29

Abstract

An aerosol-generating article (100) comprising: a combustible heat source (110); an aerosol-generating substrate (120) downstream of the combustible heat source (110); and a wrapper (130) circumscribing at least a rear portion of the combustible heat source (110) and at least a front portion of the aerosol-generating substrate (120), wherein the wrapper (130) is one or both of heat-conductive and inductively-heatable, and wherein the aerosol-generating article (100) is configured such that the combustible heat source (110) is removable from the aerosol-generating article (100).

Description

AEROSOL-GENERATING ARTICLE COMPRISING A HEAT-CONDUCTIVE OR INDUCTIVELY-HEATABLE WRAPPER

The invention relates to an aerosol-generating article comprising a combustible heat source and a wrapper that is one or both of heat-conductive and inductively-heatable. The invention also relates to an aerosol-generating system comprising the aerosol-generating article and an electrically-operated aerosol-generating device configured to heat the aerosol-generating article.

Aerosol-generating articles in which an aerosol-generating substrate, such as a tobaccocontaining material, is heated rather than combusted are known in the art. An aim of such ‘heated’ aerosol-generating articles is to reduce known harmful smoke constituents of the type produced by the combustion and pyrolytic degradation of tobacco in conventional cigarettes.

Typically, in heated aerosol-generating articles an aerosol is generated by the transfer of heat from a heat source to a physically separate aerosol-generating substrate. In use, volatile compounds are released from the aerosol-generating substrate by heat transfer from the heat source to the aerosol-generating substrate and are entrained in air drawn through the aerosolgenerating article. As the released compounds cool, they condense to form an aerosol that is inhaled by the user.

A number of handheld aerosol-generating devices configured to heat aerosol-generating substrates of heated aerosol-generating articles are known in the art. These include electrically- operated aerosol-generating devices in which an aerosol is generated by the transfer of heat from one or more electrical heating elements of the aerosol-generating device to the aerosolgenerating substrate of the heated aerosol-generating article. Known handheld electrically operated aerosol-generating devices typically comprise a battery or other power source, control electronics and one or more electrical heating elements for heating the aerosol-generating substrate of a heated aerosol-generating article designed specifically for use with the aerosolgenerating device.

Some known electrically-operated aerosol-generating devices comprise an internal heating element that is configured to be inserted into the aerosol-generating substrate of a heated aerosol-generating article. For example, WO 2013/098410 A2 discloses an aerosol-generating system comprising an aerosol-generating article and an electrically-operated aerosol-generating device comprising a heating element in the form of a blade that is inserted into the aerosolgenerating substrate of the aerosol-generating article.

Other known electrically-operated aerosol-generating devices comprise one or more external heating elements. For example, WO 2020/115151 A1 discloses an aerosol-generating system comprising an aerosol-generating article and an electrically-operated aerosol-generating device comprising an external heating element that circumscribes the outer periphery of the aerosol-generating article.

Electrically-operated aerosol-generating devices comprising an inductor configured to inductively heat aerosol-generating substrates of heated aerosol-generating articles are also known in the art. For example, WO 2015/176898 A1 discloses an aerosol-generating system comprising an aerosol-generating article comprising an elongate susceptor in thermal contact with the aerosol-generating substrate and an electrically-operated aerosol-generating device having an inductor for heating the aerosol-generating substrate. In use, the fluctuating or alternating electromagnetic field produced by the inductor induces eddy currents in the susceptor, causing the susceptor to heat up as a result of one or both of resistive losses (Joule heating) and, where the susceptor is magnetic, hysteresis losses. Heat generated in the susceptor is transferred to the aerosol-generating substrate by conduction.

Typically, heated aerosol-generating articles designed specifically for use with an electrically-operated aerosol-generating device are not configured for use without an electrically- operated aerosol-generating device. This may adversely limit when a user may use the heated aerosol-generating article. For example, where an electrically-operated aerosol-generating device is not available or where the battery or other power source of the electrically-operated aerosol-generating device is depleted, a user may not be able to use the heated aerosolgenerating article.

It would be desirable to provide a heated aerosol-generating article for use with an electrically-operated aerosol-generating device that may be also used without an electrically- operated aerosol-generating device.

The invention relates to an aerosol-generating article. The aerosol-generating article may comprise a combustible heat source. The aerosol-generating article may comprise an aerosolgenerating substrate downstream of the combustible heat source. The aerosol-generating article may comprise a wrapper. The wrapper may circumscribe at least a rear portion of the combustible heat source. The wrapper may circumscribe at least a front portion of the aerosol-generating substrate. The wrapper may be one or both of heat-conductive and inductively-heatable. The aerosol-generating article may be configured such that the combustible heat source is removable from the aerosol-generating article.

The invention also relates to an aerosol-generating system. The aerosol-generating system may comprise an aerosol-generating article as described above. The aerosol-generating system may comprise an aerosol-generating device. The aerosol-generating device may be configured to heat the aerosol-generating article. The aerosol-generating device may comprise an inductor. According to a first aspect of the invention, there is provided an aerosol-generating article comprising: a combustible heat source; an aerosol-generating substrate downstream of the combustible heat source; and a wrapper circumscribing at least a rear portion of the combustible heat source and at least a front portion of the aerosol-generating substrate, wherein the wrapper is one or both of heat-conductive and inductively-heatable, and wherein the aerosol-generating article is configured such that the combustible heat source is removable from the aerosolgenerating article.

According to a second aspect of the invention, there is provided an aerosol-generating system comprising: an aerosol-generating article according to the first aspect of the invention; and an aerosol-generating device configured to heat the aerosol-generating substrate of the aerosol-generating article, wherein the aerosol-generating device comprises an inductor.

As used herein with reference to the invention, the term “aerosol-generating article” is used to describe an article comprising an aerosol-generating substrate that is heated to generate an inhalable aerosol for delivery to a user.

As used herein with reference to the invention, the term “aerosol-generating substrate” is used to describe a substrate comprising aerosol-generating material that is capable of releasing upon heating volatile compounds that can generate an aerosol.

As used herein with reference to the invention, the term “aerosol” is used to describe a dispersion of solid particles, or liquid droplets, or a combination of solid particles and liquid droplets, in a gas. The aerosol may be visible or invisible. The aerosol may include vapours of substances that are ordinarily liquid or solid at room temperature as well as solid particles, or liquid droplets, or a combination of solid particles and liquid droplets.

As used herein with reference to the invention, the term “aerosol-generating device” is used to describe a device that interacts with the aerosol generating substrate of the aerosolgenerating article to generate an aerosol.

As used herein with reference to the invention, the terms “upstream”, “front”, “downstream” and “rear” are used to describe the relative positions of components or portions of components of aerosol-generating articles according to the first aspect of the invention.

Aerosol-generating articles according to the first aspect of the invention have a proximal end through which, in use, an aerosol exits the aerosol-generating article for delivery to a user. The proximal end of the aerosol-generating article may also be referred to as the downstream end or the mouth end of the aerosol-generating article. In use, a user draws on the proximal end of the aerosol-generating article in order to inhale an aerosol generated by the aerosol-generating article. Aerosol-generating articles according to the first aspect of the invention have a distal end. The distal end is opposite the proximal end. The distal end of the aerosol-generating article may also be referred to as the upstream end of the aerosol-generating article.

Components of aerosol-generating articles according to the first aspect of the invention may be described as being upstream or downstream of one another based on their relative positions between the proximal end of the aerosol-generating article and the distal end of the aerosol-generating article.

The aerosol-generating substrate is located between the combustible heat source and the proximal end of the aerosol-generating article.

The aerosol-generating substrate may be described as being downstream of the combustible heat source.

As used herein with reference to the invention, the term “longitudinal” is used to describe the direction between the proximal end and the distal end of aerosol-generating articles according to the first aspect of the invention.

As used herein with reference to the invention, the term “transverse” is used to describe the direction perpendicular to the longitudinal direction. That is, the direction perpendicular to the direction between the proximal end and the distal end of aerosol-generating articles according to the first aspect of the invention.

As used herein with reference to the invention, the term “length” is used to describe the maximum dimension of aerosol-generating articles according to the first aspect of the invention and components of aerosol-generating articles according to the first aspect of the invention in the longitudinal direction. That is, the maximum dimension of aerosol-generating articles according to the first aspect of the invention and components of the aerosol-generating articles according to the first aspect of the invention in the direction between the proximal end and the distal end of the aerosol-generating article.

As used herein with reference to the invention, the terms “width” and “diameter” are used to describe the maximum dimension of aerosol-generating articles according to the first aspect of the invention and components of aerosol-generating articles according to the first aspect of the invention in the transverse direction. That is, the maximum dimension of aerosol-generating articles according to the first aspect of the invention and components of the aerosol-generating articles according to the first aspect of the invention in the direction perpendicular to the direction between the proximal end and the distal end of the aerosol-generating article.

As used herein with reference to the invention, the term “thickness” is used to describe the maximum dimension of aerosol-generating articles according to the first aspect of the invention and components of aerosol-generating articles according to the first aspect of the invention in a direction perpendicular to both the longitudinal direction and the transverse direction.

Aerosol-generating articles according to the first aspect of the invention comprise a combustible heat source, an aerosol-generating substrate downstream of the combustible heat source, a wrapper circumscribing at least a rear portion of the combustible heat source and at least a front portion of the aerosol-generating substrate, wherein the wrapper is one or both of heat-conductive and inductively-heatable, and wherein the aerosol-generating article is configured such that the combustible heat source is removable from the aerosol-generating article. Inclusion of these features may enable aerosol-generating articles according to the first aspect of the invention to be used with an electrically-operated aerosol-generating device configured to heat the aerosol-generating substrate of the aerosol-generating article following removal of the combustible heat source. Inclusion of these features may also enable aerosolgenerating articles according to the first aspect of the invention to be used without an electrically- operated aerosol-generating device following ignition of the combustible heat source by heat transfer from the combustible heat source to the aerosol-generating substrate. Aerosolgenerating articles according to the first aspect of the invention may thereby advantageously be used with an electrically-operated aerosol-generating device and also without an electrically- operated aerosol-generating device.

A user may remove the combustible heat source prior to using the aerosol-generating article with an electrically-operated aerosol-generating device configured to heat the aerosolgenerating substrate of the aerosol-generating article. The combustible heat source may also be referred to as a removable combustible heat source.

Advantageously, the aerosol-generating article may be configured such that the combustible heat source is removable from the aerosol-generating article in a way that does not adversely affect heating of the aerosol-generating substrate by an electrically-operated aerosolgenerating device.

Advantageously, the aerosol-generating article may be configured such that the combustible heat source is removable from the aerosol-generating article in a way that does not substantively damage the aerosol-generating substrate.

The aerosol-generating article may comprise means for facilitating removal of the combustible heat source.

The aerosol-generating article may comprise a transverse line of weakness provided in the wrapper.

The wrapper may be breakable along the transverse line of weakness to facilitate removal of the combustible heat source. The wrapper may be breakable along the transverse line of weakness to remove a portion of the wrapper.

The wrapper may be breakable along the transverse line of weakness to remove a front portion of the wrapper extending from an upstream end of the wrapper to the line of weakness.

Removing a front portion of the wrapper may detach the combustible heat source from other components of the aerosol-generating article.

Removing a front portion of the wrapper may expose at least a front portion of the combustible heat source to enable a user to grip and remove the combustible heat source.

Suitable types of lines of weakness that may be provided in the wrapper are known in the art and include, but are not limited to, embossed lines, debossed lines, creases, scored lines, lines of perforations, and combinations thereof.

Preferably, the line of weakness is a line of perforations.

The line of weakness provided in the wrapper may be formed using suitable known methods such as, for example, laser perforation or mechanical perforation, such as pin perforation.

The line of weakness may be formed in the wrapper prior to assembly of the aerosolgenerating article.

The line of weakness may be formed in the wrapper after assembly of the aerosolgenerating article.

The transverse line of weakness may be a circumferential line of weakness. As used herein with reference to the invention, the term “circumferential” is used to describe a transverse line of weakness that circumscribes an underlying component of the aerosol-generating article.

The transverse line of weakness may be located between an upstream end of the rear portion of the combustible heat source and a downstream end of the front portion of the aerosolgenerating substrate.

The transverse line of weakness may be located within about 0.2L of a downstream end of the combustible heat source, where L is the length of the combustible heat source.

The transverse line of weakness may be located within about 0.15L of the downstream end of the combustible heat source, within about 0.1 L of the downstream end of the combustible heat source, or within about 0.05L of the downstream end of the combustible heat source.

The transverse line of weakness may be located within about 2 millimetres of the downstream end of the combustible heat source, within about 1.5 millimetres of the downstream end of the combustible heat source, within about 1 millimetre of the downstream end of the combustible heat source, or within about 0.5 millimetres of the downstream end of the combustible heat source. Locating the transverse line of weakness in the vicinity of a downstream end of the combustible heat source may advantageously facilitate removal of the combustible heat source.

The transverse line of weakness may be located at the downstream end of the combustible heat source. This may advantageously facilitate removal of the combustible heat source without substantively affecting components of the aerosol-generating article downstream of the combustible heat source, such as the aerosol-generating substrate and a rear portion of the wrapper circumscribing the aerosol-generating substrate.

Where the transverse line of weakness is located at the downstream end of the combustible heat source, breaking the wrapper along the transverse line of weakness and removing a front portion of the wrapper extending from the upstream end of the wrapper to the line of weakness results in removal of the portion of the wrapper circumscribing the combustible heat source from the aerosol-generating article. This may advantageously facilitate insertion of the aerosol-generating article into an electrically operated aerosol-generating device.

The transverse line of weakness may be located downstream of the combustible heat source.

Where the transverse line of weakness is located downstream of the combustible heat source, breaking the wrapper along the transverse line of weakness and removing a front portion of the wrapper extending from the upstream end of the wrapper to the line of weakness results in removal of the portion of the wrapper circumscribing the combustible heat source from the aerosol-generating article. This may advantageously facilitate insertion of the aerosol-generating article into an electrically operated aerosol-generating device.

The transverse line of weakness may circumscribe the front portion of the aerosolgenerating substrate.

The transverse line of weakness may be located upstream of the downstream end of the combustible heat source.

The transverse line of weakness may circumscribe the rear portion of the combustible heat source.

The wrapper may be in direct contact with the rear portion of the combustible heat source. The wrapper may be in direct contact with the front portion of the aerosol-generating substrate. The wrapper may be in direct contact with both the rear portion of the combustible heat source and the front portion of the aerosol-generating substrate. As used herein with reference to the invention, the term “direct contact” is used to describe contact between two components of the aerosol-generating article without any intermediate material, such that the surfaces of the two components are touching one another.

The wrapper is preferably non-combustible. As used herein with reference to the invention, the term “non-combustible” is used to describe a component of the aerosol-generating article that is substantially non-combustible at temperatures reached by the combustible heat source during ignition and combustion thereof.

The wrapper may be oxygen restricting. In other words, the wrapper may inhibit or resist the passage of oxygen through the wrapper.

The wrapper may be heat-conductive. Where the wrapper is heat-conductive, the wrapper may provide a thermal link between the combustible heat source and the aerosol-generating substrate when the aerosol-generating article is used without an electrically operated aerosolgenerating device. This may advantageously help to facilitate adequate heat transfer from the combustible heat source to the aerosol-generating substrate to produce an acceptable aerosol when the aerosol-generating article is used without an electrically operated aerosol-generating device.

The wrapper may be formed of a heat-conductive material.

Preferably, the one or more heat-conductive materials have a bulk thermal conductivity of between about 10 W per metre Kelvin (W/(m*K)) and about 500 W per metre Kelvin (W/(m*K)), more preferably between about 15 W per metre Kelvin (W/(m*K)) and about 400 W per metre Kelvin (W/(m*K)), at 23 degrees Celsius and a relative humidity of 50 percent as measured using the modified transient plane source (MTPS) method.

Suitable heat-conductive materials are known in the art and include, but are not limited to: graphite; metals, such as aluminium, iron and copper; and alloys, such as steel.

For example, the heat-conductive wrapper may be: a graphite sheet or foil wrapper; a metal sheet or foil wrapper, such as an aluminium foil wrapper, an iron foil wrapper, or a copper foil wrapper; or an alloy sheet or foil wrapper, such as a steel foil wrapper.

The heat-conductive wrapper may comprise a non-heat-conductive substrate and a heat- conductive material disposed on the non-heat-conductive substrate.

Suitable non-heat-conductive substrates are known in the art and include, but are not limited to, non-heat-conductive paper sheets and non-heat-conductive polymer sheets.

The wrapper may be inductively-heatable. Where the wrapper is inductively-heatable, the wrapper may function as a susceptor when the aerosol-generating article is used with an electrically operated aerosol-generating device comprising an inductor.

The inductively-heatable wrapper may be in thermal contact with the aerosol-generating substrate.

The inductively-heatable wrapper may be configured to heat the aerosol-generating substrate when the aerosol-generating article is used with an electrically operated aerosolgenerating device comprising an inductor.

The wrapper may be formed of an inductively-heatable material. Suitable inductively-heatable materials are known in the art and include, but are not limited to: conductive carbon; graphite; metals, such as aluminium, iron, cobalt, copper, gold, iron and nickel; and alloys, such as bronze and steel, for example, plain-carbon steel, stainless steel, and ferritic steel.

For example, the inductively-heatable wrapper may be: a conductive carbon sheet or foil wrapper; a graphite sheet or foil wrapper; a metal sheet or foil wrapper, such as an aluminium foil wrapper, a cobalt foil wrapper, a copper foil wrapper, a gold foil wrapper, an iron foil wrapper, or a nickel foil wrapper; or an alloy sheet or foil wrapper, such as a bronze foil wrapper or a steel foil wrapper, for example, a plain-carbon steel foil wrapper, a stainless steel foil wrapper, or a ferritic steel foil wrapper.

The inductively-heatable wrapper may comprise a non-inductively-heatable substrate and an inductively-heatable material disposed on the non-inductively-heatable substrate.

Suitable non-inductively-heatable substrates are known in the art and include, but are not limited to, non-inductively-heatable paper sheets and non-inductively-heatable polymer sheets.

The inductively-heatable material may be printed onto the non-inductively-heatable substrate. The inductively-heatable material may be an ink, for example an ink comprising ferromagnetic particles.

The inductively-heatable material may be disposed in a discontinuous pattern on the non- inductively-heatable substrate.

The inductively-heatable material may be discontinuous in a longitudinal direction of the aerosol-generating article. This may reduce or prevent conductive heat transfer from the combustible heat source to the aerosol-generating substrate by way of the inductively-heatable material when the aerosol-generating article is used without an electrically operated aerosolgenerating device.

The inductively-heatable material may be disposed in a plurality of spaced-apart lines on the non-inductively-heatable substrate.

The inductively-heatable material may be disposed in a plurality of spaced-apart transverse lines on the non-inductively-heatable substrate.

The inductively-heatable material may be disposed in a plurality of spaced apart circumferential lines on the non-inductively-heatable substrate.

The wrapper may be both heat-conductive and inductively-heatable.

The wrapper may be formed of a material that is both heat-conductive and inductively- heatable.

The wrapper may comprise a heat-conductive portion and an inductively-heatable portion.

The features described above in relation to a heat-conductive wrapper are equally applicable to the heat-conductive portion of a wrapper comprising a heat-conductive portion and an inductively-heatable portion. Similarly, the features described above in relation to an inductively-heatable wrapper are equally applicable to the inductively-heatable portion of a wrapper comprising a heat-conductive portion and an inductively-heatable portion.

The wrapper may comprise a non-heat-conductive and non-inductively-heatable substrate, a heat-conductive material disposed on the non-heat-conductive and non-inductively- heatable substrate to form a heat-conductive portion of the wrapper, and an inductively-heatable material disposed on the non-heat-conductive and non-inductively-heatable substrate to form an inductively-heatable portion of the wrapper.

The wrapper may comprise a heat-conductive portion and an inductively-heatable portion downstream of the heat-conductive portion. In such embodiments, the heat-conductive portion may extend from an upstream end of the wrapper to the inductively-heatable portion. The inductively-heatable portion may extend from the heat-conductive portion to a downstream end of the wrapper.

The heat-conductive portion of the wrapper may circumscribe the rear portion of the combustible heat source and a portion of the aerosol-generating substrate. The heat-conductive portion of the wrapper may circumscribe the rear portion of the combustible heat source and an upstream portion of the front portion of the aerosol-generating substrate. The heat-conductive portion of the wrapper may circumscribe the rear portion of the combustible heat source and the front portion of the aerosol-generating substrate. Where the aerosol-generating article comprises a transverse line of weakness provided in the wrapper, the heat-conductive portion of the wrapper may be a front portion of the wrapper that is removable by breaking the wrapper along the transverse line of weakness.

The inductively-heatable portion of the wrapper may circumscribe at least a portion of the aerosol-generating substrate. Where the aerosol-generating article comprises a transverse line of weakness provided in the wrapper, the inductively-heatable portion of the wrapper may be a rear portion of the wrapper that remains when the wrapper is broken along the transverse line of weakness and a front portion of the wrapper extending from an upstream end of the wrapper to the line of weakness is removed.

The wrapper circumscribes at least a front portion of the aerosol-generating substrate.

The wrapper may circumscribe a majority of the length of the aerosol-generating substrate. Where the wrapper is heat-conductive, this may facilitate heating of the aerosolgenerating substrate by conductive heat transfer from the combustible heat source to the aerosolgenerating substrate when the aerosol-generating article is used without an electrically operated aerosol-generating device. Where the wrapper is inductively-heatable, this may facilitate heating of the aerosol-generating substrate by an electrically-operated aerosol-generating device comprising an inductor. The wrapper may circumscribe at least about 50 percent of the length of the aerosolgenerating substrate, at least about 55 percent of the length of the aerosol-generating substrate, or at least about 60 percent of the length of the aerosol-generating substrate.

The wrapper may circumscribe up to about 100 percent of the length of the aerosolgenerating substrate, up to about 95 percent of the length of the aerosol-generating substrate, or up to about 90 percent of the length of the aerosol-generating substrate.

The wrapper may circumscribe between about 50 percent and about 100 percent of the length of the aerosol-generating substrate, between about 50 percent and about 95 percent of the length of the aerosol-generating substrate, or between about 50 percent and about 90 percent of the length of the aerosol-generating substrate.

The wrapper may circumscribe between about 55 percent and about 100 percent of the length of the aerosol-generating substrate, between about 55 percent and about 95 percent of the length of the aerosol-generating substrate, or between about 55 percent and about 90 percent of the length of the aerosol-generating substrate.

The wrapper may circumscribe between about 60 percent and about 100 percent of the length of the aerosol-generating substrate, between about 60 percent and about 95 percent of the length of the aerosol-generating substrate, or between about 60 percent and about 90 percent of the length of the aerosol-generating substrate.

The wrapper may circumscribe substantially the entire length of the aerosol-generating substrate.

The wrapper may circumscribe the entire length of the aerosol-generating substrate.

The wrapper circumscribes at least a rear portion of the combustible heat source. This may advantageously help to retain the combustible heat source within the aerosol-generating article during storage and during use when the aerosol-generating article is used without an electrically-operated aerosol-generating device. Where the wrapper is heat-conductive, this may advantageously help to facilitate adequate heat transfer from the combustible heat source to the aerosol-generating substrate to produce an acceptable aerosol when the aerosol-generating article is used without an electrically operated aerosol-generating device.

The wrapper may circumscribe at least about 10 percent of the length of the combustible heat source, at least about 15 percent of the length of the combustible heat source, or at least about 20 percent of the length of the combustible heat source.

Preferably, the wrapper does not circumscribe a front portion of the combustible heat source. This may advantageously facilitate ignition and combustion of the combustible heat source when the aerosol-generating article is used without an electrically operated aerosolgenerating device. The wrapper may circumscribe up to about 50 percent of the length of the combustible heat source, up to about 40 percent of the length of the combustible heat source, or up to about 30 percent of the length of the combustible heat source.

The wrapper may circumscribe between about 10 percent and about 50 percent of the length of the combustible heat source, between about 15 percent and about 50 percent of the length of the combustible heat source, or between about 20 percent and about 50 percent of the length of the combustible heat source.

The wrapper may circumscribe between about 10 percent and about 40 percent of the length of the combustible heat source, between about 15 percent and about 40 percent of the length of the combustible heat source, or between about 20 percent and about 40 percent of the length of the combustible heat source.

The wrapper may circumscribe between about 10 percent and about 30 percent of the length of the combustible heat source, between about 15 percent and about 30 percent of the length of the combustible heat source, or between about 20 percent and about 30 percent of the length of the combustible heat source.

A rear portion of the wrapper may be affixed to an underlying component of the aerosolgenerating article. For example, a rear portion of the wrapper may be affixed to the aerosolgenerating substrate.

Where the aerosol-generating article comprises a transverse line of weakness provided in the wrapper, affixing a rear portion of the wrapper to an underlying component of the aerosolgenerating article may advantageously facilitate removal of a front portion of the wrapper by breaking the wrapper along the transverse line of weakness.

Where the aerosol-generating article comprises a transverse line of weakness provided in the wrapper, affixing a rear portion of the wrapper to an underlying component of the aerosolgenerating article may advantageously enable a front portion of the wrapper to be removed without substantively disturbing components of the aerosol-generating article downstream of the combustible heat source, such as the aerosol-generating substrate and a rear portion of the wrapper circumscribing the aerosol-generating substrate.

The rear portion of the wrapper may be affixed to an underlying component of the aerosolgenerating article using any suitable means. For example, the rear portion of the wrapper may be affixed to an underlying component of the aerosol-generating article using an adhesive.

The aerosol-generating article may comprise a longitudinal line of weakness provided in a front portion of the wrapper. Where the aerosol-generating article comprises a transverse line of weakness, the longitudinal line of weakness may extend from an upstream end of the wrapper to the transverse line of weakness. This may facilitate removal of a front portion of the wrapper by a user. For example, a user may first break the wrapper along the longitudinal line of weakness, and then along the transverse line of weakness, to remove a front portion of the wrapper.

The aerosol-generating article may comprise a susceptor located within the aerosolgenerating substrate.

The susceptor may be configured to heat the aerosol-generating substrate.

The susceptor may be in thermal contact with the aerosol-generating substrate.

The susceptor may be an elongate susceptor.

As used herein with reference to the invention, the term “elongate” is used to describe a component of the aerosol-generating article having a length greater than the width and thickness thereof.

The susceptor may extend along a longitudinal axis of the aerosol-generating substrate.

The susceptor may extend from an upstream end of the aerosol-generating substrate towards a downstream end of the aerosol-generating substrate.

The susceptor may extend from a downstream end of the aerosol-generating substrate towards an upstream end of the aerosol-generating substrate.

The susceptor may extend from an upstream end of the aerosol-generating substrate to a downstream end of the aerosol-generating substrate. In such embodiments, the susceptor may have a length substantially the same as a length of the aerosol-generating substrate.

The susceptor may be spaced apart from an upstream end of the aerosol-generating substrate.

The susceptor may be spaced apart from a downstream end of the aerosol-generating substrate.

The susceptor may be spaced apart from an upstream end of the aerosol-generating substrate and spaced apart from a downstream end of the aerosol-generating substrate. In such embodiments, the susceptor may be entirely enclosed within the aerosol-generating substrate. That is, the aerosol-generating substrate may completely surround the susceptor.

The susceptor may have a length of at least about 5 millimetres, at least about 10 millimetres, or at least about 15 millimetres.

The susceptor may have a length of up to about 25 millimetres, or up to about 20 millimetres.

The susceptor may have a length of between about 5 millimetres and about 25 millimetres, or between about 5 millimetres and about 20 millimetres.

The susceptor may have a length of between about 10 millimetres and about 25 millimetres, or between about 10 millimetres and about 20 millimetres.

The susceptor may have a length of between about 15 millimetres and about 25 millimetres, or between about 15 millimetres and about 20 millimetres. The susceptor may have any suitable width. The susceptor may have any suitable thickness.

The susceptor may have a width of at least about 1 millimetre.

The susceptor may have a width of up to about 5 millimetres.

The susceptor may have a thickness of at least about 0.01 millimetres.

The susceptor may have a thickness of up to about 2 millimetres

The susceptor may be formed of any inductively-heatable material that may be heated to a temperature sufficient to generate an aerosol from the aerosol-generating substrate.

Suitable inductively-heatable materials are known in the art and include, but are not limited to: conductive carbon; graphite; metals, such as aluminium, iron, cobalt, copper, gold, iron and nickel; and alloys, such as bronze and steel, for example, plain-carbon steel, stainless steel, and ferritic steel.

Aerosol-generating articles according to the first aspect of the invention may comprise a susceptor located within the aerosol-generating substrate as described in WO 2015/176898 A1.

Suitable combustible heat sources for use in aerosol-generating articles according to the first aspect of the invention are known in the art.

Preferably, the combustible heat source is a combustible carbonaceous heat source.

As used herein with reference to the invention, the term “carbonaceous” is used to describe a combustible heat source comprising carbon.

The combustible heat source may comprise at least about 25 percent by weight of carbon, at least about 30 percent by weight of carbon, at least about 35 percent by weight of carbon, or at least about 40 percent by weight of carbon.

Unless stated otherwise, percentages by weight of components of the combustible heat source recited herein are based on the total dry weight of the combustible heat source.

The combustible heat source may comprise up to about 60 percent by weight of carbon, up to about 55 percent by weight of carbon, up to about 50 percent by weight of carbon, or up to about 45 percent by weight of carbon.

The combustible heat source may comprise between about 25 percent by weight and about 60 percent by weight of carbon, between about 25 percent by weight and about 55 percent by weight of carbon, between about 25 percent by weight and about 50 percent by weight of carbon or between about 25 percent by weight and about 45 percent by weight of carbon.

The combustible heat source may comprises between about 30 percent by weight and about 60 percent by weight of carbon, between about 30 percent by weight and about 55 percent by weight of carbon, between about 30 percent by weight and about 50 percent by weight of carbon or between about 30 percent by weight and about 45 percent by weight of carbon. The combustible heat source may comprise between about 35 percent by weight and about 60 percent by weight of carbon, between about 35 percent by weight and about 55 percent by weight of carbon, between about 35 percent by weight and about 50 percent by weight of carbon or between about 35 percent by weight and about 45 percent by weight of carbon.

The combustible heat source may comprise between about 40 percent by weight and about 60 percent by weight of carbon, between about 40 percent by weight and about 55 percent by weight of carbon, between about 40 percent by weight and about 50 percent by weight of carbon or between about 40 percent by weight and about 45 percent by weight of carbon.

The combustible heat source may comprise an oxidizing agent that releases oxygen during ignition of the combustible heat source when the aerosol-generating article is used without an electrically operated aerosol-generating device. The quantity of oxygen released by the oxidizing agent during ignition of the combustible heat source may be sufficient to result in the combustible heat source undergoing a two-stage combustion process.

In an initial first stage the combustible heat source may exhibit a ‘boost’ in temperature and in a subsequent second stage the combustible heat source may undergo sustained combustion at a lower ‘cruising’ temperature.

The initial ‘boost’ in temperature of combustible heat source may arise due to very rapid propagation of heat throughout the entirety of the combustible heat source upon ignition of a portion thereof. The very rapid propagation of heat may be the result of a chain reaction in which a portion of the combustible heat source that is ignited triggers the ignition of an adjacent unignited part of the combustible heat source.

The amount of oxidizing agent that must be included in order to achieve the two-stage process described above will vary depending on the specific oxidizing agent included in the combustible heat source.

The oxidizing agent may be an alkaline earth metal peroxide.

The oxidizing agent may be calcium peroxide.

The combustible heat source may comprise at least about 15 percent by weight of calcium peroxide, at least about 20 percent by weight of calcium peroxide, at least about 30 percent by weight of calcium peroxide, or at least about 40 percent by weight of calcium peroxide.

The combustible heat source may comprise up to about 65 percent by weight of calcium peroxide, up to about 60 percent by weight of calcium peroxide, up to about 55 percent by weight of calcium peroxide, or up to about 50 percent by weight of calcium peroxide.

The combustible heat source may comprise between about 15 percent by weight and about 65 percent by weight of calcium peroxide, between about 15 percent by weight and about 60 percent by weight of calcium peroxide, between about 15 percent by weight and about 55 percent by weight of calcium peroxide or between about 15 percent by weight and about 50 percent by weight of calcium peroxide.

The combustible heat source may comprise between about 20 percent by weight and about 65 percent by weight of calcium peroxide, between about 20 percent by weight and about 60 percent by weight of calcium peroxide, between about 20 percent by weight and about 55 percent by weight of calcium peroxide or between about 20 percent by weight and about 50 percent by weight of calcium peroxide.

The combustible heat source may comprise between about 30 percent by weight and about 65 percent by weight of calcium peroxide, between about 30 percent by weight and about 60 percent by weight of calcium peroxide, between about 30 percent by weight and about 55 percent by weight of calcium peroxide or between about 30 percent by weight and about 50 percent by weight of calcium peroxide.

The combustible heat source may comprise between about 40 percent by weight and about 65 percent by weight of calcium peroxide, between about 40 percent by weight and about 60 percent by weight of calcium peroxide, between about 40 percent by weight and about 55 percent by weight of calcium peroxide or between about 40 percent by weight and about 50 percent by weight of calcium peroxide.

The combustible heat source may comprise one or more binding agents.

As used herein with reference to the invention, the term “binding agent” is used to describe a component of the combustible heat source that is capable of binding other components of the combustible heat source together.

The combustible heat source may comprise one or more cellulosic binding agents.

The combustible heat source may comprise one or more non-cellulosic binding agents.

The combustible heat source may comprise at least about 3 percent by weight of the one or more binding agents, at least about 4 percent by weight of the one or more binding agents, or at least about 5 percent by weight of the one or more binding agents.

The combustible heat source may comprise up to about 20 percent by weight of the one or more binding agents, up to about 15 percent by weight of the one or more binding agents, or up to about 10 percent by weight of the one or more binding agents.

The combustible heat source may comprise between about 3 percent by weight and about 20 percent by weight of the one or more binding agents, between about 3 percent by weight and about 15 percent by weight of the one or more binding agents or between about 3 percent by weight and about 10 percent by weight of the one or more binding agents.

The combustible heat source may comprise between about 4 percent by weight and about 20 percent by weight of the one or more binding agents, between about 4 percent by weight and about 15 percent by weight of the one or more binding agents or between about 4 percent by weight and about 10 percent by weight of the one or more binding agents.

The combustible heat source may comprise between about 5 percent by weight and about 20 percent by weight of the one or more binding agents, between about 5 percent by weight and about 15 percent by weight of the one or more binding agents or between about 5 percent by weight and about 10 percent by weight of the one or more binding agents.

The combustible heat source may comprise one or more carboxylate burn salts.

As used herein with reference to the invention, the term “carboxylate burn salt” is used to describe a salt of a carboxylic acid other than carbonic acid. That is, as used herein with reference to the invention, the term “carboxylate burn salt” does not include carbonates or bicarbonates.

The one or more carboxylate burn salts may advantageously promote combustion of the combustible heat source when the aerosol-generating article is used without an electrically operated aerosol-generating device.

The carboxylate burn salt may comprise a monovalent, divalent, or trivalent cation and a carboxylate anion.

The carboxylate burn salt may comprise a monovalent, divalent, or trivalent cation and an acetate, citrate or succinate anion.

The carboxylate burn salt may be an alkali metal carboxylate burn salt. For example, the carboxylate burn salt may be a sodium carboxylate burn salt or a potassium carboxylate burn salt.

The carboxylate burn salt may be an alkali metal acetate, an alkali metal citrate or an alkali metal succinate.

The carboxylate burn salt may be potassium citrate.

The combustible heat source may comprise a single carboxylate burn salt.

The combustible heat source may comprise a combination of two or more different carboxylate burn salts. The two or more different carboxylate burn salts may comprise different carboxylate anions. The two or more different carboxylate burn salts may comprise different cations. For example, the combustible heat source may comprise a combination of an alkali metal citrate and an alkaline earth metal succinate.

The combustible heat source may comprise at least about 0.1 percent by weight of the one or more carboxylate burn salts, at least about 0.5 percent by weight of the one or more carboxylate burn salts, or at least about 1 percent by weight of the one or more carboxylate burn salts.

The combustible heat source may comprise up to about 4 percent by weight of the one or more carboxylate burn salts or up to about 3 percent by weight of the one or more carboxylate burn salts. The combustible heat source may comprise between about 0.1 percent by weight and about 4 percent by weight of the one or more carboxylate burn salts or between about 0.1 percent by weight and about 3 percent by weight of the one or more carboxylate burn salts.

The combustible heat source may comprise between about 0.5 percent by weight and about 4 percent by weight of the one or more carboxylate burn salts or between about 0.5 percent by weight and about 3 percent by weight of the one or more carboxylate burn salts.

The combustible heat source may comprise between about 1 percent by weight and about 4 percent by weight of the one or more carboxylate burn salts or between about 1 percent by weight and about 3 percent by weight of the one or more carboxylate burn salts.

The combustible heat source may be formed by: combining components of the combustible heat source to form a mixture; and forming the mixture into a desired shape.

For example, the combustible heat source may be formed by: combining one or more carbon materials, an oxidizing agent, one or more binding agents and any other components of the combustible heat source to form a mixture; and forming the mixture into a desired shape.

The components of the combustible heat source may be combined to form a mixture using suitable known methods such as, for example, dry granulation, wet granulation, high shear mixing, spheronization or extrusion.

The mixture may be formed into a desired shape using suitable known methods such as, for example, slip casting, extrusion, injection moulding, die compaction or pressing.

Advantageously, the mixture is formed into a desired shape by a pressing process.

After formation the desired shape may be dried to reduce the moisture content thereof. The desired shape may be dried using suitable known methods. For example, the desired shape may be dried in an oven.

The combustible heat source may be a non-blind combustible heat source.

As used herein with reference to the invention, the term “non-blind” is used to describe a combustible heat source including at least one airflow channel extending along the length of the combustible heat source through which air may be drawn for inhalation by a user.

Preferably, the combustible heat source is a blind combustible heat source.

As used herein with reference to the invention, the term “blind” is used to describe a combustible heat source that does not include any airflow channels extending along the length of the combustible heat source through which air may be drawn for inhalation by a user.

The combustible heat source may comprise one or more closed or blocked channels through which air may not be drawn for inhalation by a user.

For example, the combustible heat source may comprise one or more closed channels that extend only part way along a length of the combustible heat source. The inclusion of one or more closed channels may increase the surface area of the combustible heat source that is exposed to oxygen from the air. This may advantageously facilitate ignition and sustained combustion of the combustible heat source when the aerosolgenerating article is used without an electrically operated aerosol-generating device.

Where the combustible heat source is a non-blind combustible heat source, when the aerosol-generating article is used without an electrically operated aerosol-generating device air drawn through the aerosol-generating article for inhalation by a user passes through at least one airflow channel along the length of the combustible heat source.

Where the combustible heat source is a non-blind combustible heat source, when the aerosol-generating article is used without an electrically operated aerosol-generating device heating of the aerosol-generating substrate occurs by conduction and forced convection.

Where the combustible heat source is a blind combustible heat source, when the aerosolgenerating article is used without an electrically operated aerosol-generating device air drawn through the aerosol-generating article for inhalation by a user does not pass through any airflow channels along the length of the blind combustible heat source.

Where the combustible heat source is a blind combustible heat source, when the aerosolgenerating article is used without an electrically operated aerosol-generating device heating of the aerosol-generating substrate occurs primarily by conduction and heating of the aerosolgenerating substrate by forced convection is minimised or reduced. Where the combustible heat source is a blind combustible heat source, it is particularly important to optimise the conductive heat transfer between the combustible heat source and the aerosol-generating substrate when the aerosol-generating article is used without an electrically operated aerosol-generating device.

Where the combustible heat source is a blind combustible heat source, the lack of any airflow channels extending along the length of the combustible heat source through which air may be drawn for inhalation by a user may advantageously substantially prevent or inhibit activation of combustion of the combustible heat source during puffing by a user when the aerosolgenerating article is used without an electrically operated aerosol-generating device. This may advantageously substantially prevent or inhibit spikes in the temperature of the aerosolgenerating substrate during puffing by a user when the aerosol-generating article is used without an electrically operated aerosol-generating device.

By preventing or inhibiting activation of combustion of the combustible heat source when the aerosol-generating article is used without an electrically operated aerosol-generating device, and so preventing or inhibiting excess temperature increases in the aerosol-generating substrate, combustion or pyrolysis of the aerosol-generating substrate under intense puffing regimes may be advantageously avoided. In addition, the impact of a user’s puffing regime on the composition of the mainstream aerosol may be advantageously minimised or reduced. Inclusion of a blind combustible heat source may advantageously substantially prevent or inhibit combustion and decomposition products and other materials formed during ignition and combustion of the combustible heat source from entering air drawn through the aerosolgenerating article for inhalation by a user when the aerosol-generating article is used without an electrically operated aerosol-generating device.

Where the combustible heat source is a blind combustible heat source, the aerosolgenerating article may comprise one or more air inlets downstream of the combustible heat source for drawing air into the aerosol-generating article for inhalation by a user when the aerosolgenerating article is used without an electrically operated aerosol-generating device. In such embodiments, air drawn through the aerosol-generating article for inhalation by a user when the aerosol-generating article is used without an electrically operated aerosol-generating device enters the aerosol-generating article through the one or more air inlets and not through the distal end of the aerosol-generating article.

Where the combustible heat source is a non-blind combustible heat source, the aerosolgenerating article may comprise one or more air inlets downstream of the combustible heat source for drawing air into the aerosol-generating article for inhalation by a user. In such embodiments, air drawn through the aerosol-generating article for inhalation by a user when the aerosolgenerating article is used without an electrically operated aerosol-generating device enters the aerosol-generating article through the one or more air inlets and through the distal end of the aerosol-generating article.

The aerosol-generating article may comprise one or more air inlets around the periphery of the aerosol-generating substrate. In such embodiments, during puffing by a user cool air is drawn into the aerosol-generating substrate of the aerosol-generating article through the one or more air inlets around the periphery of the aerosol-generating substrate. This may advantageously reduce the temperature of the aerosol-generating substrate and so substantially prevent or inhibit spikes in the temperature of the aerosol-generating substrate during puffing by a user when the aerosol-generating article is used without an electrically operated aerosolgenerating device.

As used herein with reference to the invention, the term “cool air” is used to describe ambient air that is not significantly heated by the combustible heat source upon puffing by a user when the aerosol-generating article is used without an electrically operated aerosol-generating device.

By preventing or inhibiting spikes in the temperature of the aerosol-generating substrate, the inclusion of one or more air inlets around the periphery of the aerosol-generating substrate, may advantageously help to avoid or reduce combustion or pyrolysis of the aerosol-generating substrate under intense puffing regimes when the aerosol-generating article is used without an electrically operated aerosol-generating device.

Inclusion of one or more air inlets around the periphery of the aerosol-generating substrate may advantageously help to minimise or reduce the impact of a user’s puffing regime on the composition of the mainstream aerosol of the aerosol-generating article when the aerosolgenerating article is used without an electrically operated aerosol-generating device.

The aerosol-generating article may comprise one or more air inlets located proximate to a downstream end of the aerosol-generating substrate.

The aerosol-generating article may comprise one or more air inlets downstream of the aerosol-generating substrate. That is, one or more air inlets located between the aerosolgenerating substrate and the proximal end of the aerosol-generating article.

The combustible heat source may be substantially cylindrical.

The combustible heat source may have a substantially circular transverse cross-section.

The combustible heat source may have a diameter of at least about 4 millimetres, or at least about 5 millimetres.

The combustible heat source may have a diameter of up to about 9 millimetres, or up to about 8 millimetres.

The combustible heat source may have a diameter of between about 4 millimetres and about 9 millimetres, or between about 4 millimetres and about 8 millimetres.

The combustible heat source may have a diameter of between about 5 millimetres and about 9 millimetres, or between about 5 millimetres and 8 millimetres.

The combustible heat source may have a diameter of about 5 millimetres.

The combustible heat source may have a diameter that is substantially the same as a diameter of the aerosol-generating article.

The combustible heat source may have a length of at least about 5 millimetres, at least about 6 millimetres, or at least about 7 millimetres.

The combustible heat source may have a length of up to about 17 millimetres, up to about 15 millimetres, or up to about 13 millimetres.

The combustible heat source may have a length of between about 5 millimetres and about 17 millimetres, between about 5 millimetres and about 15 millimetres, or between about

5 millimetres and about 13 millimetres.

The combustible heat source may have a length of between about 6 millimetres and about 17 millimetres, between about 6 millimetres and about 15 millimetres, or between about

6 millimetres and about 13 millimetres. The combustible heat source may have a length of between about 7 millimetres and about 17 millimetres, between about 7 millimetres and about 15 millimetres, or between about 7 millimetres and about 13 millimetres.

The aerosol-generating article may comprise a non-combustible, substantially air- impermeable barrier between a downstream end of the combustible heat source and an upstream end of the aerosol-generating substrate.

Inclusion of a non-combustible, substantially air-impermeable barrier between a downstream end of the combustible heat source and an upstream end of the aerosol-generating substrate may advantageously limit the temperature to which the aerosol-generating substrate is exposed during ignition and combustion of the combustible heat source when the aerosolgenerating article is used without an electrically operated aerosol-generating device. This may help to avoid or reduce thermal degradation or combustion of the aerosol-generating substrate when the aerosol-generating article is used without an electrically operated aerosol-generating device.

Inclusion of a non-combustible, substantially air-impermeable barrier between a downstream end of the combustible heat source and an upstream end of the aerosol-generating substrate may advantageously substantially prevent or inhibit migration of components of the aerosol-generating substrate to the combustible heat source during storage and when the aerosol-generating article is used without an electrically operated aerosol-generating device.

The barrier may abut one or both of the downstream end of the combustible heat source and the upstream end of the aerosol-generating substrate.

The barrier may be affixed to the downstream end of the combustible heat source. In such embodiments, removal of the combustible heat source from the aerosol-generating article may also remove the barrier from the aerosol-generating article.

Suitable methods for affixing a barrier to the downstream of the combustible heat source are known in the art and include, but are not limited to: spray-coating; vapour deposition; dipping; material transfer (for example, brushing or gluing); electrostatic deposition; pressing; or any combination thereof.

The length of the barrier may be selected to achieve good performance. For example, the barrier may have a length of between about 10 micrometres and about 500 micrometres.

The barrier may be formed from one or more suitable materials that are substantially thermally stable and non-combustible at temperatures achieved by the combustible heat source during ignition and combustion when the aerosol-generating article is used without an electrically operated aerosol-generating device. Suitable materials are known in the art and include, but are not limited to: clays such as, for example, bentonite and kaolinite; glasses; minerals; ceramic materials; resins; metals; or any combination thereof. Preferably, the barrier comprises aluminium foil.

A barrier of aluminium foil may be applied to the downstream end of the combustible heat source by gluing or pressing it to the combustible heat source. The barrier may be cut or otherwise machined so that the aluminium foil covers and adheres to at least substantially the entire downstream end of the combustible heat source. Advantageously, the aluminium foil covers and adheres to the entire downstream end of the combustible heat source.

Where the aerosol-generating article comprises a transverse line of weakness provided in the wrapper, the transverse line of weakness may be located at the downstream end of the non-combustible, substantially air impermeable barrier.

The aerosol-generating substrate may be in the form of a plug or segment comprising aerosol-generating material that is capable of releasing upon heating volatile compounds that can generate an aerosol, circumscribed by a wrapper. Where an aerosol-generating substrate is in the form of such a plug or segment, the entire plug or segment including the wrapper is considered to be the aerosol-generating substrate.

The aerosol-generating substrate may comprise aerosol-generating material comprising an aerosol former.

The aerosol former may be any suitable compound or mixture of compounds that, in use, facilitates formation of a dense and stable aerosol and that is substantially resistant to thermal degradation at the operating temperature of the aerosol-generating article. Suitable aerosol formers are known in the art and include, but are not limited to: polyhydric alcohols, such as triethylene glycol, propylene glycol, 1 ,3-butanediol and glycerine; esters of polyhydric alcohols, such as glycerol mono-, di- or triacetate; and aliphatic esters of mono-, di- or polycarboxylic acids, such as dimethyl dodecanedioate and dimethyl tetradecanedioate.

Advantageously, the aerosol former comprises one or more polyhydric alcohols.

More advantageously, the aerosol former comprises glycerine.

The aerosol-generating substrate may comprise solid aerosol-generating material.

The aerosol-generating substrate may comprise a plug of solid aerosol-generating material circumscribed by a wrapper.

The aerosol-generating substrate may comprise gel aerosol-generating material.

The aerosol-generating substrate may comprise a porous substrate loaded with gel aerosol-generating material.

As used herein with reference to the invention, the term “gel aerosol- generating material” is used to describe a substantially dilute cross-linked system, which exhibits no flow in the steady state.

The aerosol-generating substrate may comprise plant-based material. The aerosolgenerating substrate may comprise homogenised plant-based material. The aerosol-generating substrate may comprise nicotine.

As used herein with reference to the invention, the term “nicotine” is used to describe nicotine and nicotine derivatives such as nicotine salts.

The aerosol-generating substrate may comprise tobacco material.

As used herein with reference to the invention, the term “tobacco material” is used to describe any material comprising tobacco, including, but not limited to, tobacco leaf, tobacco rib, tobacco stem, tobacco stalk, tobacco dust, expanded tobacco, reconstituted tobacco material and homogenised tobacco material.

The tobacco material may, for example, be in the form of powder, granules, pellets, shreds, strands, strips, sheets or any combination thereof.

Advantageously, the aerosol-generating substrate comprises homogenised tobacco material.

As used herein with reference to the invention, the term “homogenised tobacco material” is used to describe a material formed by agglomerating particulate tobacco.

In certain embodiments, the aerosol-generating substrate advantageously comprises a plurality of strands of homogenised tobacco material.

Advantageously, the plurality of strands of homogenised tobacco material may be aligned substantially parallel to one another within the aerosol-generating substrate.

In certain embodiments, the aerosol-generating substrate advantageously comprises a gathered sheet of homogenised tobacco material.

The aerosol-generating substrate may comprise a rod comprising a gathered sheet of homogenised tobacco material.

As used herein with reference to the aerosol-generating substrate of the invention, the term “rod” is used to describe a substantially cylindrical element of substantially circular, oval or elliptical cross-section.

As used herein with reference to the invention, the term “sheet” is used to describe a laminar element having a width and length substantially greater than the thickness thereof.

As used herein with reference to the invention, the term “gathered” is used to describe a sheet that is convoluted, folded, or otherwise compressed or constricted substantially transversely to the longitudinal axis of the aerosol-generating article.

The aerosol-generating substrate may comprise aerosol-generating material and a wrapper around and in contact with the aerosol-generating material.

The wrapper may be formed from any suitable sheet material that is capable of being wrapped around aerosol-generating material to form an aerosol-generating substrate. ln certain embodiments, the aerosol-generating substrate may comprise a rod comprising a gathered sheet of homogenised tobacco material and a wrapper around and in contact with the tobacco material.

In certain embodiments, the aerosol-generating substrate advantageously comprises a gathered textured sheet of homogenised tobacco material.

As used herein with reference to the invention, the term “textured sheet” is used to describe a sheet that has been crimped, embossed, debossed, perforated or otherwise deformed.

Use of a textured sheet of homogenised tobacco material may advantageously facilitate gathering of the sheet of homogenised tobacco material to form the aerosol-generating substrate.

The aerosol-generating substrate may comprise a gathered textured sheet of homogenised tobacco material comprising a plurality of spaced-apart indentations, protrusions, perforations or any combination thereof.

The aerosol-generating substrate may comprise a gathered crimped sheet of homogenised tobacco material.

As used herein with reference to the invention, the term “crimped sheet” is used to describe a sheet having a plurality of substantially parallel ridges or corrugations.

Advantageously, when an aerosol-generating article according to the first aspect of the invention comprising the aerosol-generating substrate has been assembled, the substantially parallel ridges or corrugations extend along or parallel to the longitudinal axis of the aerosolgenerating article. This facilitates gathering of the crimped sheet of homogenised tobacco material to form the aerosol-generating substrate.

However, it will be appreciated that crimped sheets of homogenised tobacco material for inclusion in aerosol-generating substrates of aerosol-generating articles according to the first aspect of the invention may alternatively or in addition have a plurality of substantially parallel ridges or corrugations that are disposed at an acute or obtuse angle to the longitudinal axis of the aerosol-generating article when the aerosol-generating article has been assembled.

The aerosol-generating substrate may have a length of at least about 5 millimetres, at least about 10 millimetres, or at least about 15 millimetres.

The aerosol-generating substrate may have a length of up to about 25 millimetres, or up to about 20 millimetres.

The aerosol-generating substrate may have a length of between about 5 millimetres and about 25 millimetres, or between about 5 millimetres and about 20 millimetres.

The aerosol-generating substrate may have a length of between about 10 millimetres and about 25 millimetres, or between about 10 millimetres and about 20 millimetres.

The aerosol-generating substrate may have a length of between about 15 millimetres and about 25 millimetres, or between about 15 millimetres and about 20 millimetres. The aerosol-generating substrate may be substantially cylindrical.

The aerosol-generating substrate may have a substantially circular transverse crosssection.

The aerosol-generating substrate may have a diameter of at least about 4 millimetres, or at least about 5 millimetres.

The aerosol-generating substrate may have a diameter of up to about 9 millimetres, or up to about 8 millimetres.

The aerosol-generating substrate may have a diameter of between about 4 millimetres and about 9 millimetres, or between about 4 millimetres and about 8 millimetres.

The aerosol-generating substrate may have a diameter of between about 5 millimetres and about 9 millimetres, or between about 5 millimetres and about 8 millimetres.

The aerosol-generating substrate may have a diameter that is substantially the same as a diameter of the aerosol-generating article.

The aerosol-generating article may comprise a cap configured to at least partially cover a front portion of the combustible heat source. The cap may be removable to expose the front portion of the combustible heat source prior to use of the aerosol-generating article. The cap may advantageously protect the combustible heat source prior to use of the aerosol-generating article.

As used herein with reference to the invention, the term “cap” is used to describe a protective cover at the distal end of the aerosol-generating article that substantially surrounds a front portion of the combustible heat source.

For example, aerosol-generating articles according to the first aspect of the invention may comprise a removable cap attached at a line of weakness to the distal end of the aerosolgenerating article, wherein the cap comprises a cylindrical plug of material circumscribed by a wrapper as described in WO 2014/086998 A1 .

Aerosol-generating articles according to the first aspect of the invention may comprise one or more components downstream of the aerosol-generating substrate. That is, one or more components located between the aerosol-generating substrate and the proximal end of the aerosol-generating article.

The one or more other components may comprise one or more of an airflow directing element, a transfer element or spacer element, an aerosol-cooling element or heat exchanger, and a mouthpiece.

The aerosol-generating article may comprise an airflow directing element downstream of the aerosol-generating substrate. That is, an airflow directing element located between the aerosol-generating substrate and the proximal end of the aerosol-generating article. The airflow directing element may abut the aerosol-generating substrate. Alternatively, the airflow directing element may be longitudinally spaced-apart from the airflow directing element.

The aerosol-generating article may comprise one or more air inlets around the periphery of the airflow directing element.

The airflow directing element may define an airflow pathway comprising a first portion extending from the one or more air inlets towards the aerosol-generating substrate and a second portion extending from the aerosol-generating substrate towards the proximal end of the aerosolgenerating article.

For example, aerosol-generating articles according to the first aspect of the invention may comprise an airflow directing element as described in WO 2013/120854 A1 , WO 2014/096317 A1 or WO 2014/140273 A2.

The aerosol-generating article may comprise a transfer element or spacer element downstream of the aerosol-generating substrate. That is, a transfer element or spacer element located between the aerosol-generating substrate and the proximal end of the aerosol-generating article.

The transfer element may abut the aerosol-generating substrate. Alternatively, the transfer element may be longitudinally spaced-apart from the aerosol-generating substrate.

Where the aerosol-generating article comprises an airflow directing element downstream of the aerosol-generating substrate and a transfer element downstream of the aerosol-generating substrate, the transfer element is preferably downstream of the airflow directing element. That is, the transfer element is preferably located between the airflow directing element and the proximal end of the aerosol-generating article.

The transfer element may abut the airflow directing element. Alternatively, the transfer element may be longitudinally spaced-apart from the airflow directing element.

The inclusion of a transfer element may advantageously allow cooling of the aerosol generated by heating of the aerosol-generating substrate.

The inclusion of a transfer element may advantageously allow the overall length of the aerosol-generating article to be adjusted to a desired value through an appropriate choice of the length of the transfer element.

The transfer element may have a length of between about 5 millimetres and about 40 millimetres. For example, the transfer element may have a length of between about 10 millimetres and about 30 millimetres or a length of between about 15 millimetres and about 25 millimetres.

The transfer element may have other lengths depending upon the desired overall length of the aerosol-generating article and the presence and length of other components within the aerosol-generating article.

The transfer element may comprise an open-ended tubular hollow body. In use, air drawn into the aerosol-generating article by a user may pass through the open-ended tubular hollow body as it passes downstream through the aerosol-generating article from the aerosol-generating substrate to the proximal end of the aerosol-generating article.

The open-ended tubular hollow body may be formed from one or more materials that are substantially thermally stable at the temperature of the aerosol generated by heating of the aerosol-generating substrate. Suitable materials are known in the art and include, but are not limited to: paper; cardboard; thermoplastics, such a cellulose acetate; and ceramics.

Aerosol-generating articles according to the first aspect of the invention may comprise an aerosol-cooling element or heat exchanger downstream of the aerosol-generating substrate. That is, an aerosol-cooling element or heat exchanger located between the aerosol-generating substrate and the proximal end of the aerosol-generating article.

Where the aerosol-generating article comprises a transfer element downstream of the aerosol-generating substrate and an aerosol-cooling element downstream of the aerosolgenerating substrate, the aerosol-cooling element is preferably downstream of the transfer element. That is, the aerosol-cooling element is preferably located between the transfer element and the proximal end of the aerosol-generating article.

The aerosol-cooling element may advantageously cool the aerosol generated by heat transfer from the combustible heat source to the aerosol-generating substrate.

The aerosol-cooling element may comprise a plurality of longitudinally extending channels.

The aerosol-cooling element may comprise a gathered sheet of material selected from the group consisting of metallic foil, polymeric material, and substantially non-porous paper or cardboard.

The aerosol-cooling element may comprise a gathered sheet of material selected from the group consisting of polyethylene (PE), polypropylene (PP), polyvinylchloride (PVC), polyethylene terephthalate (PET), polylactic acid (PLA), cellulose acetate (CA), and aluminium foil.

The aerosol-cooling element may comprise a gathered sheet of biodegradable polymeric material, such as polylactic acid (PLA) or a grade of Mater- Bi® (a commercially available family of starch based copolyesters).

The aerosol-generating article may comprise a mouthpiece downstream of the aerosolgenerating substrate. That is, a mouthpiece located between the aerosol-generating substrate and the proximal end of the aerosol-generating article.

The aerosol-generating article may comprise a mouthpiece located at the proximal end of the aerosol-generating article. The mouthpiece may be of low filtration efficiency or very low filtration efficiency.

The mouthpiece may be a single segment mouthpiece.

The mouthpiece may be a multi-segment mouthpiece.

The mouthpiece may comprise one or more segments comprising filtration material.

Suitable filtration materials are known in the art and include, but are not limited to, cellulose acetate and paper.

The mouthpiece may comprise one or more segments comprising absorbent material.

Suitable absorbent materials and suitable adsorbent materials are known in the art and include, but are not limited to, activated carbon, silica gel and zeolites.

The mouthpiece may have a length of between about 10 millimetres and about 22 millimetres. For example, the mouthpiece may have a length of between about 12 millimetres and about 20 millimetres or a length of between about 14 millimetres and about 18 millimetres.

The aerosol-generating article may comprise one or more aerosol modifying agents downstream of the aerosol-generating substrate. For example, where included, one or more of the airflow directing element, transfer element, aerosol-cooling element, and mouthpiece may comprise one or more aerosol modifying agents.

As used herein with reference to the invention, the term “aerosol-modifying agent” is used to describe an agent that, in use, modifies one or more features or properties of an aerosol generated by the aerosol-generating substrate of the aerosol-generating article.

Suitable aerosol-modifying agents include, but are not limited to, flavourants and chemesthetic agents.

As used herein with reference to the invention, the term “chemesthetic agent” is used to describe an agent that, in use, is perceived in the oral or olfactory cavities of a user by means other than, or in addition to, perception via taste receptor or olfactory receptor cells. Perception of chemesthetic agents is typically via a "trigeminal response," either via the trigeminal nerve, glossopharyngeal nerve, the vagus nerve, or some combination of these. Typically, chemesthetic agents are perceived as hot, spicy, cooling, or soothing sensations.

The aerosol-generating article may comprise one or more aerosol modifying agents that are both a flavourant and a chemesthetic agent downstream of the aerosol-generating substrate. For example, where included, one or more of the airflow directing element, transfer element, aerosol-cooling element, and mouthpiece of the aerosol-generating article may comprise menthol or another flavourant that provides a cooling chemesthetic effect.

The aerosol-generating article may comprise an outer wrapper.

The outer wrapper may circumscribe the wrapper.

The aerosol-generating article may comprise a transverse line of weakness provided in the outer wrapper. The outer wrapper may be breakable along the transverse line of weakness provided in the outer wrapper to facilitate removal of the combustible heat source.

The outer wrapper may be breakable along the transverse line of weakness provided in the outer wrapper to remove a portion of the outer wrapper.

The outer wrapper may be breakable along the transverse line of weakness provided in the outer wrapper to remove a front portion of the outer wrapper extending from an upstream end of the outer wrapper to the line of weakness provided in the outer wrapper.

The transverse line of weakness provided in the outer wrapper may be a circumferential line of weakness.

The transverse line of weakness provided in the outer wrapper may be substantially aligned with the transverse line of weakness provided in the wrapper.

The transverse line of weakness provided in the outer wrapper may be downstream of the transverse line of weakness provided in the wrapper.

The transverse line of weakness provided in the outer wrapper may be upstream of the transverse line of weakness provided in the wrapper.

Breaking the outer wrapper along the transverse line of weakness provided in the outer wrapper may facilitate removal of a portion of the wrapper.

Where the aerosol-generating article comprises a transverse line of weakness provided in the wrapper, breaking the outer wrapper along the transverse line of weakness provided in the outer wrapper may facilitate removal of a front portion of the wrapper extending from an upstream end of the wrapper to the line of weakness provided in the wrapper.

Suitable types of lines of weakness that may be provided in the outer wrapper are known in the art and include, but are not limited to, embossed lines, debossed lines, creases, scored lines, lines of perforations, and combinations thereof.

Preferably, the line of weakness is a line of perforations.

The line of weakness provided in the outer wrapper may be formed using suitable known methods such as, for example, laser perforation or mechanical perforation, such as pin perforation.

The line of weakness may be formed in the outer wrapper prior to assembly of the aerosolgenerating article.

The line of weakness may be formed in the outer wrapper after assembly of the aerosolgenerating article.

An upstream end of the outer wrapper may be aligned with an upstream end of the wrapper.

An upstream end of the outer wrapper may be upstream of an upstream end of the wrapper. In other words, the outer wrapper may extend upstream beyond the wrapper. A downstream end of the outer wrapper may be downstream of a downstream end of the wrapper. In other words, the outer wrapper may extend downstream beyond the wrapper.

The outer wrapper may extend to a proximal end of the aerosol-generating article.

Where the aerosol-generating article comprises an airflow directing element downstream of the aerosol-generating substrate, the outer wrapper may circumscribe the airflow directing element. Where the outer wrapper circumscribes the airflow directing element, one or more air inlets may be provided in the outer wrapper about the periphery of the airflow directing element.

The aerosol-generating article may have any desired length.

The aerosol-generating article may have a length of at least about 55 millimetres, at least about 60 millimetres, or at least about 65 millimetres.

The aerosol-generating article may have a length of up to about 100 millimetres, up to about 90 millimetres, or up to about 80 millimetres.

The aerosol-generating article may have a length of between about 55 millimetres and about 100 millimetres, between about 55 millimetres and about 90 millimetres, or between about 55 millimetres and about 80 millimetres.

The aerosol-generating article may have a length of between about 60 millimetres and about 100 millimetres, between about 60 millimetres and about 90 millimetres, or between about 60 millimetres and about 80 millimetres.

The aerosol-generating article may have a length of between about 65 millimetres and about 100 millimetres, between about 65 millimetres and about 90 millimetres, or between about 65 millimetres and about 80 millimetres.

The aerosol-generating article may be substantially cylindrical.

The aerosol-generating article may have a substantially circular transverse cross-section.

The aerosol-generating article may have any desired diameter.

The aerosol-generating article may have a diameter of at least about 4 millimetres, or at least about 5 millimetres.

The aerosol-generating article may have a diameter of up to about 10 millimetres, or up to about 9 millimetres.

The aerosol-generating article may have a diameter of between about 4 millimetres and about 10 millimetres, or between about 4 millimetres and about 9 millimetres.

The aerosol-generating article may have a diameter of between about 5 millimetres and about 10 millimetres, or between about 5 millimetres and about 9 millimetres.

Aerosol-generating articles according to the first aspect of the invention may be assembled using known methods and machinery.

The aerosol-generating device may be a handheld aerosol-generating device.

The aerosol-generating device may be an electrically-operated aerosol-generating device.

The aerosol-generating device may comprise a power supply and control electronics.

The aerosol-generating device may comprise a battery and control electronics.

The aerosol-generating device may comprise a housing defining a cavity configured to receive at least a portion of the aerosol-generating article.

The cavity may have a length about the same as or less than a length of the aerosolgenerating article.

Preferably, the cavity has a length less than a length of the aerosol-generating article. In such embodiments, a downstream end of the aerosol-generating article may protrude outwardly from the cavity when an upstream end of the aerosol-generating article is received in the cavity.

The cavity may have a length of at least about 40 millimetres, at least about 45 millimetres, or at least about 50 millimetres.

The cavity may have a length of up to about 85 millimetres, up to about 75 millimetres, or up to about 65 millimetres.

The cavity may have a length of between about 40 millimetres and about 85 millimetres, between about 40 millimetres and about 75 millimetres, or between about 40 millimetres and about 65 millimetres.

The cavity may have a length of between about 45 millimetres and about 85 millimetres, between about 45 millimetres and about 75 millimetres, or between about 45 millimetres and about 65 millimetres.

The cavity may have a length of between about 50 millimetres and about 85 millimetres, between about 50 millimetres and about 75 millimetres, or between about 50 millimetres and about 65 millimetres.

The cavity may be substantially cylindrical.

The cavity may have a substantially circular transverse cross-section.

The cavity may have a diameter about the same as or greater than a diameter of the aerosol-generating article.

The cavity may have a diameter of at least about 4 millimetres, at least about 5 millimetres, or at least about 6 millimetres.

The cavity may have a diameter of up to about 12 millimetres, up to about 11 millimetres, or up to about 10 millimetres. The cavity may have a diameter of between about 4 millimetres and about 12 millimetres, between about 4 millimetres and about 11 millimetres, or between about 4 millimetres and about 10 millimetres.

The cavity may have a diameter of between about 5 millimetres and about 12 millimetres, between about 5 millimetres and about 11 millimetres, or between about 5 millimetres and about 10 millimetres.

The cavity may have a diameter of between about 6 millimetres and about 12 millimetres, between about 6 millimetres and about 11 millimetres, or between about 6 millimetres and about 10 millimetres.

The inductor may comprise one or more induction coils.

The inductor may be located about a perimeter of the cavity.

Where the aerosol-generating article comprises an inductively heatable wrapper, in use, the fluctuating or alternating electromagnetic field produced by the inductor induces eddy currents in the inductively heatable wrapper, causing the inductively heatable wrapper to heat up as a result of one or both of resistive losses (Joule heating) and, where the inductively heatable wrapper is magnetic, hysteresis losses. Heat generated in the inductively heatable wrapper is transferred to the aerosol-generating substrate by conduction.

Where the aerosol-generating article comprises a susceptor located within the aerosolgenerating substrate, in use, the fluctuating or alternating electromagnetic field produced by the inductor induces eddy currents in the susceptor, causing the susceptor to heat up as a result of one or both of resistive losses (Joule heating) and, where the susceptor is magnetic, hysteresis losses. Heat generated in the susceptor is transferred to the aerosol-generating substrate by conduction.

The aerosol-generating device may comprise a susceptor configured to heat the aerosolgenerating substrate of the aerosol-generating article.

The susceptor may be located about a perimeter of the cavity.

Where the aerosol-generating device comprises a susceptor and an inductor, the inductor may circumscribe the susceptor.

The aerosol-generating device may be configured such that when the aerosol-generating article is received in the cavity, the susceptor is located about the periphery of the aerosolgenerating substrate of the aerosol-generating article.

The aerosol-generating device may be configured such that when the aerosol-generating article is received in the cavity, the susceptor circumscribes the periphery of the aerosolgenerating substrate of the aerosol-generating article.

Where the aerosol-generating device comprises a susceptor, in use, the fluctuating or alternating electromagnetic field produced by the inductor induces eddy currents in the susceptor, causing the susceptor to heat up as a result of one or both of resistive losses (Joule heating) and, where the susceptor is magnetic, hysteresis losses. Heat generated in the susceptor is transferred to the aerosol-generating substrate of the aerosol-generating article by conduction.

It will be appreciated that aerosol-generating articles according to the first aspect of the invention may be used with aerosol-generating devices that do not comprise an inductor. In particular, aerosol-generating articles according to the first aspect of the invention may be used with aerosol-generating devices comprising an electric heater comprising one or more resistive heating elements. For example, aerosol-generating articles according to the first aspect of the invention may be used with electrically-operated aerosol-generating devices comprising an electric heater comprising a resistive heating element that is configured to be inserted into the aerosol-generating substrate of the aerosol-generating article.

Where the aerosol-generating article comprises one or more air inlets downstream of the combustible heat source, the aerosol-generating system may be configured such that when the aerosol-generating article is received in the cavity of the aerosol-generating device, air may be drawn into the aerosol-generating article through the one or more air inlets of the aerosolgenerating article.

Where the aerosol-generating article comprises one or more air inlets downstream of the combustible heat source, the aerosol-generating system may be configured such that when the aerosol-generating article is received in the cavity of the aerosol-generating device, air may be drawn into the aerosol-generating article through both the one or more air inlets of the aerosolgenerating article and the distal end of the aerosol-generating article.

Where the aerosol-generating article comprises one or more air inlets downstream of the combustible heat source, the aerosol-generating system may be configured such that when the aerosol-generating article is received in the cavity of the aerosol-generating device, air may not be drawn into the aerosol-generating article through the one or more air inlets of the aerosolgenerating article.

Where the aerosol-generating article comprises one or more air inlets downstream of the combustible heat source, the aerosol-generating system may be configured such that when the aerosol-generating article is received in the cavity of the aerosol-generating device, air may not be drawn into the aerosol-generating article through the distal end of the aerosol-generating article.

Below there is provided a non-exhaustive list of non-limiting examples. Any one or more of the features of these examples may be combined with any one or more features of another example, embodiment, or aspect described herein.

EX1 : An aerosol-generating article comprising: a combustible heat source; an aerosolgenerating substrate downstream of the combustible heat source; and a wrapper circumscribing at least a rear portion of the combustible heat source and at least a front portion of the aerosolgenerating substrate, wherein the wrapper is one or both of heat-conductive and inductively- heatable.

EX2: An aerosol-generating article according to EX1 wherein the aerosol-generating article is configured such that the combustible heat source is removable from the aerosolgenerating article.

EX3: An aerosol-generating article according to EX1 or EX2 further comprising means for facilitating removal of the combustible heat source.

EX4: An aerosol-generating article according to any one of EX1 to EX3 wherein the aerosol-generating article comprises a transverse line of weakness provided in the wrapper.

EX5: An aerosol-generating article according to EX4 wherein the wrapper is breakable along the transverse line of weakness to facilitate removal of the combustible heat source.

EX6: An aerosol-generating article according to EX4 or EX5 wherein the wrapper is breakable along the transverse line of weakness to remove a portion of the wrapper.

EX7: An aerosol-generating article according to any one of EX4 to EX6 wherein the wrapper is breakable along the transverse line of weakness to remove a front portion of the wrapper extending from an upstream end of the wrapper to the line of weakness.

EX8: An aerosol-generating article according to any one of EX4 to EX7 wherein the transverse line of weakness provided in the wrapper is an embossed line, a debossed line, a crease, or a line of perforations.

EX9: An aerosol-generating article according to any one of EX4 to EX8 wherein the transverse line of weakness provided in the wrapper is a line of perforations.

EX10: An aerosol-generating article according to any one of EX4 to EX9 wherein the transverse line of weakness provided in the wrapper is a circumferential line of weakness.

EX11 : An aerosol-generating article according to any one of EX4 to EX10 wherein the transverse line of weakness provided in the wrapper is located between an upstream end of the rear portion of the combustible heat source and a downstream end of the front portion of the aerosol-generating substrate.

EX12: An aerosol-generating article according to any one of EX4 to EX11 wherein the transverse line of weakness provided in the wrapper is located within about 0.2L of a downstream end of the combustible heat source, where L is the length of the combustible heat source.

EX13: An aerosol-generating article according to any one of EX4 to EX12 wherein the transverse line of weakness provided in the wrapper is located within about 0.15L of a downstream end of the combustible heat source, where L is the length of the combustible heat source. EX14: An aerosol-generating article according to any one of EX4 to EX13 wherein the transverse line of weakness provided in the wrapper is located within about 0.1 L of a downstream end of the combustible heat source, where L is the length of the combustible heat source.

EX15: An aerosol-generating article according to any one of EX4 to EX14 wherein the transverse line of weakness provided in the wrapper is located within about 0.05L of a downstream end of the combustible heat source, where L is the length of the combustible heat source.

EX16: An aerosol-generating article according to any one of EX4 to EX15 wherein the transverse line of weakness provided in the wrapper is located within about 2 millimetres of the downstream end of the combustible heat source.

EX17: An aerosol-generating article according to any one of EX4 to EX16 wherein the transverse line of weakness provided in the wrapper is located within about 1.5 millimetres of the downstream end of the combustible heat source.

EX18: An aerosol-generating article according to any one of EX4 to EX17 wherein the transverse line of weakness provided in the wrapper is located within about 1 millimetre of the downstream end of the combustible heat source.

EX19: An aerosol-generating article according to any one of EX4 to EX18 wherein the transverse line of weakness provided in the wrapper is located within about 0.5 millimetres of the downstream end of the combustible heat source.

EX20: An aerosol-generating article according to any one of EX4 to EX19 wherein the transverse line of weakness provided in the wrapper is located at the downstream end of the combustible heat source.

EX21 : An aerosol-generating article according to any one of EX4 to EX19 wherein the transverse line of weakness provided in the wrapper is located downstream of the combustible heat source.

EX22: An aerosol-generating article according to any one of EX4 to EX19 or EX21 wherein the transverse line of weakness provided in the wrapper circumscribes the front portion of the aerosol-generating substrate.

EX23: An aerosol-generating article according to any one of EX4 to EX19 wherein the transverse line of weakness provided in the wrapper is located upstream of the downstream end of the combustible heat source.

EX24: An aerosol-generating article according to any one of EX4 to EX19 or EX23 wherein the transverse line of weakness provided in the wrapper circumscribes the rear portion of the combustible heat source.

EX25: An aerosol-generating article according to any one of EX1 to EX24 wherein the wrapper is in direct contact with the rear portion of the combustible heat source. EX26: An aerosol-generating article according to any one of EX1 to EX25 wherein the wrapper is in direct contact with the front portion of the aerosol-generating substrate.

EX27: An aerosol-generating article according to any one of EX1 to EX26 wherein the wrapper is non-combustible.

EX28: An aerosol-generating article according to any one of EX1 to EX27 wherein the wrapper is oxygen restricting.

EX29: An aerosol-generating article according to any one of EX1 to EX28 wherein the wrapper is heat-conductive.

EX30: An aerosol-generating article according to any one of EX1 to E29 wherein the wrapper is inductively-heatable.

EX31 : An aerosol-generating article according to any one of EX1 to EX30 wherein the wrapper is formed of a heat-conductive material.

EX32: An aerosol-generating article according to any one of EX1 to EX31 wherein the wrapper is formed of an inductively-heatable material.

EX33: An aerosol-generating article according to any one of EX1 to EX32 wherein the wrapper is formed of a material selected from: conductive carbon; graphite; metals; and alloys.

EX34: An aerosol-generating article according to any one of EX1 to EX33 wherein the wrapper is formed of a metal selected from: aluminium; cobalt; copper; gold; iron; and nickel.

EX35: An aerosol-generating article according to any one of EX1 to EX34 wherein the wrapper is an aluminium foil wrapper, a cobalt foil wrapper, a copper foil wrapper, a gold foil wrapper, an iron foil wrapper, a nickel foil wrapper, a bronze foil wrapper, or a steel foil wrapper.

EX36: An aerosol-generating article according to any one of EX1 to EX33 wherein the wrapper is formed of an alloy selected from: bronze; and steel.

EX37: An aerosol-generating article according to any one of EX1 to EX30 wherein the wrapper comprises a non-heat-conductive substrate and a heat-conductive material disposed on the non-heat-conductive substrate.

EX38: An aerosol-generating article according to EX37 wherein the non-heat-conductive substrate is a non-heat-conductive paper sheet or a non-heat-conductive polymer sheet.

EX39: An aerosol-generating article according to EX37 or EX38 wherein the heat- conductive material is selected from: graphite; aluminium; copper; iron, and steel.

EX40: An aerosol-generating article according to any one of EX1 to EX30 or any one of EX37 to EX39 wherein the wrapper comprises a non-inductively-heatable substrate and an inductively-heatable material disposed on the non-inductively-heatable substrate.

EX41: An aerosol-generating article according to EX40 wherein the non-inductively- heatable substrate is a non-inductively-heatable paper sheet or a non-inductively-heatable polymer sheet. EX42: An aerosol-generating article according to EX40 or EX41 wherein the inductively heatable material is selected from: conductive carbon; graphite;, aluminium; cobalt; copper; gold; iron; nickel; bronze; and steel.

EX43: An aerosol-generating article according to any one of EX40 to EX42 wherein the inductively-heatable material is printed onto the non-inductively-heatable substrate.

EX44: An aerosol-generating article according to any one of EX40 to EX43 wherein the inductively-heatable material is an ink.

EX45: An aerosol-generating article according to any one of EX40 to EX44 wherein the inductively-heatable material comprises ferromagnetic particles.

EX46: An aerosol-generating article according to any one of EX40 to EX45 wherein the inductively-heatable material is disposed in a discontinuous pattern on the non-inductively- heatable substrate.

EX47: An aerosol-generating article according to any one of EX40 to EX46 wherein the inductively-heatable material is discontinuous in a longitudinal direction of the aerosol-generating article.

EX48: An aerosol-generating article according to any one of EX40 to EX47 wherein the inductively-heatable material is disposed in a plurality of spaced-apart lines on the non- inductively-heatable substrate.

EX49: An aerosol-generating article according to any one of EX40 to EX48 wherein the inductively-heatable material is disposed in a plurality of spaced-apart transverse lines on the non-inductively-heatable substrate.

EX50: An aerosol-generating article according to any one of EX40 to EX49 wherein the inductively-heatable material is disposed in a plurality of spaced apart circumferential lines on the non-inductively-heatable substrate.

EX51 : An aerosol-generating article according to any one of EX1 to EX30 or any one of EX37 to EX50 wherein the wrapper comprises a heat-conductive portion and an inductively- heatable portion.

EX52: An aerosol-generating article according to EX51 wherein the heat-conductive portion is formed of a heat-conductive material.

EX53: An aerosol-generating article according to EX51 or EX52 wherein the heat- conductive portion is formed of a material selected from: graphite; aluminium; copper; iron; and steel.

EX54: An aerosol-generating article according to EX51 wherein the heat-conductive portion comprises a non-heat-conductive substrate and a heat-conductive material disposed on the non-heat-conductive substrate. EX55: An aerosol-generating article according to any one of EX51 to EX54 wherein the inductively-heatable portion is formed of an inductively-heatable material.

EX56: An aerosol-generating article according to any one of EX51 to EX55 wherein the inductively-heatable portion is formed of a material selected from: graphite; aluminium; cobalt; copper; gold; iron; nickel; bronze; and steel.

EX57: An aerosol-generating article according to any one EX51 to EX54 wherein the inductively-heatable portion comprises a non-inductively-heatable substrate and an inductively- heatable material disposed on the non-inductively-heatable substrate.

EX58: An aerosol-generating article according to EX51 wherein the wrapper comprises: a non-heat-conductive and non-inductively-heatable substrate; a heat-conductive material disposed on the non-heat-conductive and non-inductively-heatable substrate to form the heat- conductive portion of the wrapper; and an inductively-heatable material disposed on the non-heat- conductive and non-inductively-heatable substrate to form the inductively-heatable portion of the wrapper.

EX59: An aerosol-generating article according to any one of EX51 to EX58 wherein the inductively-heatable portion is downstream of the heat-conductive portion.

EX60: An aerosol-generating article according to any one of EX51 to EX58 wherein the heat-conductive portion extends from an upstream end of the wrapper to the inductively-heatable portion.

EX61 : An aerosol-generating article according to any one of EX51 to EX60 wherein the inductively-heatable portion extends from the heat-conductive portion to a downstream end of the wrapper.

EX62: An aerosol-generating article according to any one of EX51 to EX61 wherein the heat-conductive portion of the wrapper circumscribes the rear portion of the combustible heat source and a portion of the aerosol-generating substrate.

EX63: An aerosol-generating article according to any one of EX51 to EX62 wherein the heat-conductive portion of the wrapper circumscribes the rear portion of the combustible heat source and an upstream portion of the front portion of the aerosol-generating substrate.

EX64: An aerosol-generating article according to any one of EX51 to EX63 wherein the heat-conductive portion of the wrapper circumscribes the rear portion of the combustible heat source and the front portion of the aerosol-generating substrate.

EX65: An aerosol-generating article according to any one of EX51 to EX63, wherein the heat-conductive portion of the wrapper is removable.

EX66: An aerosol-generating article according to any one of EX51 to EX64 wherein the inductively-heatable portion of the wrapper circumscribes at least a portion of the aerosolgenerating substrate. EX67: An aerosol-generating article according to any one of EX51 to EX66 wherein the aerosol-generating article comprises a transverse line of weakness disposed in the wrapper, and the inductively-heatable portion of the wrapper is a rear portion of the wrapper that remains when the wrapper is broken along the transverse line of weakness and a front portion of the wrapper extending from an upstream end of the wrapper to the transverse line of weakness is removed.

EX68: An aerosol-generating article according to any one of EX1 to EX67 wherein the wrapper is thermal contact with the aerosol-generating substrate.

EX69: An aerosol-generating article according to any one of EX1 to EX68 wherein the wrapper is configured to heat the aerosol-generating substrate.

EX70: An aerosol-generating article according to any one of EX1 to EX69 wherein the wrapper circumscribes at least about 50 percent of the length of the aerosol-generating substrate.

EX71 : An aerosol-generating article according to any one of EX1 to EX70 wherein the wrapper circumscribes at least about 55 percent of the length of the aerosol-generating substrate.

EX72: An aerosol-generating article according to any one of EX1 to EX71 wherein the wrapper circumscribes at least about 60 percent of the length of the aerosol-generating substrate.

EX73: An aerosol-generating article according to any one of EX1 to EX72 wherein the wrapper circumscribes up to about 100 percent of the length of the aerosol-generating substrate.

EX74: An aerosol-generating article according to any one of EX1 to EX73 wherein the wrapper circumscribes up to about 95 percent of the length of the aerosol-generating substrate.

EX75: An aerosol-generating article according to any one of EX1 to EX74 wherein the wrapper circumscribes up to about 90 percent of the length of the aerosol-generating substrate.

EX76: An aerosol-generating article according to any one of EX1 to EX69 wherein the wrapper circumscribes a majority of the length of the aerosol-generating substrate.

EX77: An aerosol-generating article according to any one of EX1 to EX76 wherein the wrapper circumscribes substantially the entire length of the aerosol-generating article.

EX78: An aerosol-generating article according to any one of EX1 to EX77 wherein the wrapper circumscribes at least about 10 percent of the length of the combustible heat source.

EX79: An aerosol-generating article according to any one of EX1 to EX78 wherein the wrapper circumscribes at least about 15 percent of the length of the combustible heat source.

EX80: An aerosol-generating article according to any one of EX1 to EX79 wherein the wrapper circumscribes at least about 20 percent of the length of the combustible heat source.

EX81 : An aerosol-generating article according to any one of EX1 to EX80 wherein the wrapper does not circumscribe a front portion of the combustible heat source.

EX82: An aerosol-generating article according to any one of EX1 to EX81 wherein the wrapper circumscribes up to about 50 percent of the length of the combustible heat source. EX83: An aerosol-generating article according to any one of EX1 to EX82 wherein the wrapper circumscribes up to about 40 percent of the length of the combustible heat source.

EX83: An aerosol-generating article according to any one of EX1 to EX83 wherein the wrapper circumscribes up to about 30 percent of the length of the combustible heat source.

EX84: An aerosol-generating article according to any one of EX1 to EX83 wherein a rear portion of the wrapper is affixed to an underlying component of the aerosol-generating article.

EX85: An aerosol-generating article according to any one of EX1 to EX84 wherein a rear portion of the wrapper is affixed to the aerosol-generating substrate.

EX86: An aerosol-generating article according to any one of EX1 to EX85 further comprising a longitudinal line of weakness provided in a front portion of the wrapper.

EX87: An aerosol-generating article according to any one of EX4 to EX86 wherein the longitudinal line of weakness extends from an upstream end of the wrapper to the transverse line of weakness.

EX88: An aerosol-generating article according to any one of EX1 to EX87 further comprising a susceptor located within the aerosol-generating substrate.

EX89: An aerosol-generating article according to EX88 wherein the susceptor is configured to heat the aerosol-generating substrate.

EX90: An aerosol-generating article according to EX88 or EX89 wherein the susceptor is in thermal contact with the aerosol-generating substrate.

EX91 : An aerosol-generating article according to any one of EX88 to EX90 wherein the susceptor is an elongate susceptor.

EX92: An aerosol-generating article according to any one of EX88 to EX91 wherein the susceptor extends along a longitudinal axis of the aerosol-generating substrate.

EX93: An aerosol-generating article according to any one of EX88 to EX92 wherein the susceptor extends from an upstream end of the aerosol-generating substrate towards a downstream end of the aerosol-generating substrate.

EX94: An aerosol-generating article according to any one of EX88 to EX93 wherein the susceptor extends from a downstream end of the aerosol-generating substrate towards an upstream end of the aerosol-generating substrate.

EX95: An aerosol-generating article according to any one of EX88 to EX94 wherein the susceptor extends from an upstream end of the aerosol-generating substrate to a downstream end of the aerosol-generating substrate.

EX96: An aerosol-generating article according to any one of EX88 to EX92 or EX94 wherein the susceptor is spaced apart from an upstream end of the aerosol-generating substrate. EX97: An aerosol-generating article according to any one of EX88 to EX93 or EX96 wherein the susceptor is spaced apart from a downstream end of the aerosol-generating substrate.

EX98: An aerosol-generating article according to any one of EX88 to EX92, EX96 or EX97 wherein the susceptor is entirely enclosed within the aerosol-generating substrate.

EX99: An aerosol-generating article according to any one of EX88 to EX95 wherein the susceptor has a length substantially the same as a length of the aerosol-generating substrate.

EX100: An aerosol-generating article according to any one of EX88 to EX99 wherein the susceptor has a length of at least about 5 millimetres.

EX101 : An aerosol-generating article according to any one of EX88 to EX100 wherein the susceptor has a length of at least about 10 millimetres.

EX102: An aerosol-generating article according to any one of EX88 to EX101 wherein the susceptor has a length of at least about 15 millimetres.

EX103: An aerosol-generating article according to any one of EX88 to EX102 wherein the susceptor has a length of up to about 25 millimetres.

EX104: An aerosol-generating article according to any one of EX88 to EX103 wherein the susceptor has a length of up to about 20 millimetres.

EX105: An aerosol-generating article according to any one of EX88 to EX104 wherein the susceptor has a width of at least about 1 millimetre.

EX106: An aerosol-generating article according to any one of EX88 to EX105 wherein the susceptor has a width of up to about 5 millimetres.

EX107: An aerosol-generating article according to any one of EX88 to EX106 wherein the susceptor has a thickness of at least about 0.01 millimetre.

EX108: An aerosol-generating article according to any one of EX88 to EX107 wherein the susceptor has a thickness of up to about 2 millimetres.

EX109: An aerosol-generating article according to any one of EX88 to EX108 wherein the susceptor is formed of an inductively-heatable material selected from: conductive carbon; graphite; aluminium; cobalt; copper; gold; iron; nickel; bronze; and steel.

EX110: An aerosol-generating article according to any one of EX1 to EX109 wherein the combustible heat source is a combustible carbonaceous heat source.

EX111 : An aerosol-generating article according to any one of EX1 to EX110 wherein the combustible heat source comprises at least about 25 percent by weight of carbon.

EX112: An aerosol-generating article according to any one of EX1 to EX111 wherein the combustible heat source comprises up to about 60 percent by weight of carbon.

EX113: An aerosol-generating article according to any one of EX1 to EX112 wherein the combustible heat source comprises an oxidizing agent. EX114: An aerosol-generating article according to EX113 wherein the oxidizing agent is an alkaline earth metal peroxide.

EX115: An aerosol-generating article according to EX113 or EX114 wherein the oxidizing agent is calcium peroxide.

EX116: An aerosol-generating article according to EX115 wherein the combustible heat source comprises at least about 15 percent by weight of calcium peroxide.

EX117: An aerosol-generating article according to EX115 or EX16 wherein the combustible heat source comprises up to about 65 percent by weight of calcium peroxide.

EX118: An aerosol-generating article according to any one of EX1 to EX117 wherein the combustible heat source comprises one or more binding agents.

EX119: An aerosol-generating article according to any one of EX1 to EX118 wherein the combustible heat source comprises one or more cellulosic binding agents.

EX120: An aerosol-generating article according to any one of EX1 to EX119 wherein the combustible heat source comprises one or more non-cellulosic binding agents.

EX121 : An aerosol-generating article according to any one of EX118 to EX120 wherein the combustible heat source comprises at least about 3 percent by weight of the one or more binding agents.

EX122: An aerosol-generating article according to any one of EX118 to EX121 wherein the combustible heat source comprises up to about 20 percent by weight of the one or more binding agents.

EX123: An aerosol-generating article according to any one of EX118 to EX122 wherein the combustible heat source comprises one or more carboxylate burn salts.

EX124: An aerosol-generating article according to EX123 wherein the carboxylate burn salt comprises a monovalent, divalent, or trivalent cation and a carboxylate anion.

EX125: An aerosol-generating article according to EX123 or EX124 wherein the carboxylate burn salt is an alkali metal carboxylate burn salt.

EX126: An aerosol-generating article according to any one of EX123 to EX125 wherein the one or more carboxylate burn salts comprise potassium citrate.

EX127: an aerosol-generating article according to any one of EX124 to EX126 wherein the combustible heat source comprises at least about 0.1 percent by weight of the one or more carboxylate burn salts.

EX128: An aerosol-generating article according to any one of EX124 to EX127 wherein the combustible heat source comprises up to about 4 percent by weight of the one or more carboxylate burn salts.

EX129: An aerosol-generating article according to any one of EX1 to EX128 wherein the combustible heat source is a non-blind combustible heat source. EX130: An aerosol-generating article according to any one of EX1 to EX128 wherein the combustible heat source is a blind combustible heat source.

EX131 : An aerosol-generating article according to any one of EX1 to EX129 wherein the combustible heat source comprises one or more closed or blocked channels through which air may not be drawn for inhalation by a user.

EX132: An aerosol-generating article according to any one of EX1 to EX131 further comprising one or more air inlets downstream of the combustible heat source.

EX133: An aerosol-generating article according to any one of EX1 to EX132 further comprising one or more air inlets around the periphery of the aerosol-generating substrate.

EX134: An aerosol-generating article according to any one of EX1 to EX133 further comprising one or more air inlets located proximate to a downstream end of the aerosolgenerating substrate.

EX135: An aerosol-generating article according to any one of EX1 to EX134 further comprising one or more air inlets downstream of the aerosol-generating substrate.

EX136: An aerosol-generating article according to any one of EX1 to EX135 wherein the combustible heat source has a substantially circular transverse cross-section.

EX137: An aerosol-generating article according to any one of EX1 to EX136 wherein the combustible heat source is substantially cylindrical.

EX138: An aerosol-generating article according to EX136 or EX137 wherein the combustible heat source has a diameter of at least about 4 millimetres.

EX139: An aerosol-generating article according to any one of EX136 to EX138 wherein the combustible heat source has a diameter of at least about 5 millimetres.

EX140: An aerosol-generating article according to any one of EX136 to EX139 wherein the combustible heat source has a diameter of up to about 9 millimetres.

EX141: An aerosol-generating article according to any one of EX136 to EX140 wherein the combustible heat source has a diameter of up to about 8 millimetres.

EX142: An aerosol-generating article according to any one of EX136 to EX141 wherein the combustible heat source has a diameter about the same as a diameter of the aerosolgenerating article.

EX143: An aerosol-generating article according to any one of EX1 to EX142 wherein the combustible heat source has a length of at least about 5 millimetres.

EX144: An aerosol-generating article according to any one of EX1 to EX143 wherein the combustible heat source has a length of at least about 6 millimetres.

EX145: An aerosol-generating article according to any one of EX1 to EX144 wherein the combustible heat source has a length of at least about 7 millimetres. EX146: An aerosol-generating article according to any one of EX1 to EX145 wherein the combustible heat source has a length of up to about 17 millimetres.

EX147: An aerosol-generating article according to any one of EX1 to EX146 wherein the combustible heat source has a length of up to about 15 millimetres.

EX148: An aerosol-generating article according to any one of EX1 to EX147 wherein the combustible heat source has a length of up to about 13 millimetres.

EX149: An aerosol-generating article according to any one of EX1 to EX148 further comprising a non-combustible substantially air-impermeable barrier between a downstream end of the combustible heat source and an upstream end of the aerosol-generating substrate.

EX150: An aerosol-generating article according to EX150 wherein the non-combustible substantially air-impermeable barrier abuts one or both of the downstream end of the combustible heat source and the upstream end of the aerosol-generating substrate.

EX151 : An aerosol-generating article according to EX149 or EX150 wherein the non- combustible substantially air-impermeable barrier is affixed to the downstream end of the combustible heat source.

EX152: An aerosol-generating article according to any one of EX149 to EX151 wherein the non-combustible substantially air-impermeable barrier has a length of at least 10 micrometres.

EX152: An aerosol-generating article according to any one of EX149 to EX151 wherein the non-combustible substantially air-impermeable barrier has a length of up to about 500 micrometres.

EX153: An aerosol-generating article according to any one of EX149 to EX152 wherein the non-combustible substantially air-impermeable barrier is formed from: clays; glasses; minerals; ceramic materials; resins; metals; or any combination thereof.

EX154: An aerosol-generating article according to any one of EX149 to EX153 wherein the non-combustible substantially air-impermeable barrier comprises aluminium foil.

EX155: An aerosol-generating article according to any one of EX149 to EX154 wherein the aerosol-generating article comprises a transverse line of weakness provided in the wrapper and the transverse line of weakness provided in the wrapper is located at the downstream end of the non-combustible substantially air-impermeable barrier.

EX156: An aerosol-generating article according to any one of EX1 to EX155 wherein the aerosol-forming substrate is in the form of a plug or segment comprising aerosol-generating material.

EX157: An aerosol-generating article according to any one of EX1 to EX156 wherein the aerosol-forming substrate comprises aerosol-generating material comprising an aerosol-former.

EX158: An aerosol-generating article according to EX157 wherein the aerosol former comprises one or more polyhydric alcohols. EX159: An aerosol-generating article according to EX157 or EX158 wherein the aerosolformer comprises glycerine.

EX160: An aerosol-generating article according to any one of EX1 to EX159 wherein the aerosol-generating substrate comprises solid aerosol-generating material.

EX161 : An aerosol-generating article according to any one of EX1 to EX160 wherein the aerosol-generating substrate comprises aerosol-generating material circumscribed by a wrapper.

EX162: An aerosol-generating article according to any one of EX1 to EX161 wherein the aerosol-generating substrate comprises gel aerosol-generating material.

EX163: An aerosol-generating article according to any one of EX1 to EX162 wherein the aerosol-generating substrate comprises plant-based material.

EX164: An aerosol-generating article according to any one of EX1 to EX163 wherein the aerosol-generating substrate comprises homogenised plant-based material.

EX165: An aerosol-generating article according to any one of EX1 to EX164 wherein the aerosol-generating substrate comprises nicotine.

EX166: An aerosol-generating article according to any one of EX1 to EX165 wherein the aerosol-generating substrate comprises tobacco material.

EX167: An aerosol-generating article according to any one of EX1 to EX166 wherein the aerosol-generating substrate has a length of at least about 5 millimetres.

EX168: An aerosol-generating article according to any one of EX1 to EX167 wherein the aerosol-generating substrate has a length of at least about 10 millimetres.

EX169: An aerosol-generating article according to any one of EX1 to EX168 wherein the aerosol-generating substrate has a length of at least about 15 millimetres.

EX170: An aerosol-generating article according to any one of EX1 to EX169 wherein the aerosol-generating substrate has a length of up to about 25 millimetres.

EX171 : An aerosol-generating article according to any one of EX1 to EX170 wherein the aerosol-generating substrate has a length of up to about 20 millimetres.

EX172: An aerosol-generating article according to any one of EX1 to EX171 wherein the aerosol-generating substrate has a substantially circular transverse cross-section.

EX173: An aerosol-generating article according to any one of EX1 to EX172 wherein the aerosol-generating substrate is substantially cylindrical.

EX174: An aerosol-generating article according to EX172 or EX173 wherein the aerosolgenerating substrate has a diameter of at least about 4 millimetres.

EX175: An aerosol-generating article according to any one of EX172 to EX174 wherein the aerosol-generating substrate has a diameter of at least about 5 millimetres.

EX176: An aerosol-generating article according to any one of EX172 to EX175 wherein the aerosol-generating substrate has a diameter of up to about 9 millimetres. EX177: An aerosol-generating article according to any one of EX172 to EX176 wherein the aerosol-generating substrate has a diameter of up to about 8 millimetres.

EX178: An aerosol-generating article according to any one of EX1 to EX177 further comprising a cap configured to at least partially cover a front portion of the combustible heat source.

EX179: An aerosol-generating article according to EX178 wherein the cap is removable.

EX180: An aerosol-generating article according to EX178 or EX179 wherein the cap is attached at a line of weakness to a distal end of the aerosol-generating article.

EX181 : An aerosol-generating article according to any one of EX178 to EX180 wherein the cap comprises a cylindrical plug of material circumscribed by a wrapper.

EX182: An aerosol-generating article according to any one of EX1 to EX181 further comprising one or more components downstream of the aerosol-generating substrate.

EX183: An aerosol-generating article according to any one of EX1 to EX182 further comprising an airflow directing element downstream of the aerosol-generating substrate.

EX184: An aerosol-generating article according to EX183 further comprising one or more air inlets around a periphery of the airflow directing element.

EX185: An aerosol-generating article according to EX184 wherein the airflow directing element defines an airflow pathway comprising a first portion extending from the one or more air inlets towards the aerosol-generating substrate and a second portion extending from the aerosolgenerating substrate towards a proximal end of the aerosol-generating article.

EX186: An aerosol-generating article according to any one of EX1 to EX185 further comprising a transfer element downstream of the aerosol-generating substrate.

EX187: An aerosol-generating article according to EX186 wherein the transfer element comprises an open-ended tubular hollow body.

EX188: An aerosol-generating article according to any one of EX1 to EX187 further comprising an aerosol-cooling element downstream of the aerosol-generating substrate.

EX189: An aerosol-generating article according to EX188 wherein the aerosol-cooling element comprises a plurality of longitudinally extending channels.

EX190: An aerosol-generating article according to EX188 or EX189 wherein the aerosolcooling element comprises a gathered sheet of material.

EX191 : An aerosol-generating article according to any one of EX1 to EX190 further comprising a mouthpiece downstream of the aerosol-generating article.

EX192: An aerosol-generating article according to EX191 wherein the mouthpiece is located at a proximal end of the aerosol-generating article.

EX193: An aerosol-generating article according to EX191 or EX192 wherein the mouthpiece comprises one or more segments comprising filtration material. EX194: An aerosol-generating article according to any one of EX191 to EX193 wherein the mouthpiece comprises one or more segments comprising adsorbent materials.

EX195: An aerosol-generating article according to any one of EX191 to EX194 wherein the mouthpiece has a length of at least 10 millimetres.

EX196: An aerosol-generating article according to any one of EX191 to EX195 wherein the mouthpiece has a length of at least 12 millimetres.

EX197: An aerosol-generating article according to any one of EX191 to EX196 wherein the mouthpiece has a length of at least 14 millimetres.

EX198: An aerosol-generating article according to any one of EX191 to EX197 wherein the mouthpiece has a length of up to about 22 millimetres.

EX199: An aerosol-generating article according to any one of EX191 to EX198 wherein the mouthpiece has a length of up to about 20 millimetres.

EX200: An aerosol-generating article according to any one of EX191 to EX200 wherein the mouthpiece has a length of up to about 18 millimetres.

EX201: An aerosol-generating article according to any one of EX1 to EX200 further comprising one or more aerosol modifying agents downstream of the aerosol-generating substrate.

EX202: An aerosol-generating article according to EX201 wherein the aerosol-modifying agent is one or both of a flavourant and a chemesthetic agent.

EX203: An aerosol-generating article according to any one of EX1 to EX202 further comprising an outer wrapper.

EX204: An aerosol-generating article according to EX203 wherein the outer wrapper circumscribes the wrapper.

EX205: An aerosol-generating article according to EX203 or EX204 further comprising a transverse line of weakness provided in the outer wrapper.

EX206: An aerosol-generating article according to EX205 wherein the outer wrapper is breakable along the transverse line of weakness provided in the outer wrapper to facilitate removal of the combustible heat source.

EX207: An aerosol-generating article according to EX205 or EX206 wherein the outer wrapper is breakable along the transverse line of weakness provided in the outer wrapper to remove a portion of the outer wrapper.

EX208: An aerosol-generating article according to any one of EX205 to EX207 wherein the outer wrapper is breakable along the transverse line of weakness provided in the outer wrapper to remove a front portion of the outer wrapper extending from an upstream end of the outer wrapper to the line of weakness provided in the outer wrapper. EX209: An aerosol-generating article according to any one of EX205 to EX208 wherein the transverse line of weakness provided in the outer wrapper is a circumferential line of weakness.

EX210: An aerosol-generating article according to any one of EX205 to EX209 wherein the aerosol-generating article comprises a transverse line of weakness provided in the wrapper, and the transverse line of weakness provided in the outer wrapper is substantially aligned with the transverse line of weakness provided in the wrapper.

EX211 : An aerosol-generating article according to any one of EX205 to EX209 wherein the aerosol-generating article comprises a transverse line of weakness provided in the wrapper, and the transverse line of weakness provided in the outer wrapper is downstream of the transverse line of weakness provided in the wrapper.

EX212: An aerosol-generating article according to any one of EX205 to EX209 wherein the aerosol-generating article comprises a transverse line of weakness provided in the wrapper, and the transverse line of weakness provided in the outer wrapper is upstream of the transverse line of weakness provided in the wrapper.

EX213: An aerosol-generating article according to any one of EX205 to EX212 wherein an upstream end of the outer wrapper is aligned with an upstream end of the wrapper.

EX214: An aerosol-generating article according to any one of EX205 to EX212 wherein an upstream end of the outer wrapper is upstream of an upstream end of the wrapper.

EX215: An aerosol-generating article according to any one of EX205 to EX214 wherein a downstream end of the outer wrapper is downstream of a downstream end of the wrapper.

EX216: An aerosol-generating article according to any one of EX205 to EX215 wherein the outer wrapper extends to a proximal end of the aerosol-generating article.

EX217: An aerosol-generating article according to EX205 to EX216 wherein the aerosolgenerating article comprises an airflow directing element downstream of the aerosol-generating substrate, and the outer wrapper circumscribes the airflow directing element.

EX218: An aerosol-generating article according to EX217 further comprising one or more air inlets provided in the outer wrapper about the periphery of the airflow directing element.

EX219: An aerosol-generating article according to any one of EX1 to EX218 wherein the aerosol-generating article has a length of at least about 55 millimetres.

EX220: An aerosol-generating article according to any one of EX1 to EX219 wherein the aerosol-generating article has a length of at least about 60 millimetres.

EX221 : An aerosol-generating article according to any one of EX1 to EX220 wherein the aerosol-generating article has a length of at least about 65 millimetres.

EX222: An aerosol-generating article according to any one of EX1 to EX221 wherein the aerosol-generating article has a length of up to about 100 millimetres. EX223: An aerosol-generating article according to any one of EX1 to EX222 wherein the aerosol-generating article has a length of up to about 90 millimetres.

EX224: An aerosol-generating article according to any one of EX1 to EX223 wherein the aerosol-generating article has a length of up to about 80 millimetres.

EX225: An aerosol-generating article according to any one of EX1 to EX224 wherein the aerosol-generating article is substantially cylindrical.

EX226: An aerosol-generating article according to any one of EX1 to EX225 wherein the aerosol-generating article has a substantially circular transverse cross-section.

EX227: An aerosol-generating article according to any one of EX1 to EX225 wherein the aerosol-generating article has a diameter of at least about 4 millimetres.

EX228: An aerosol-generating article according to any one of EX1 to EX226 wherein the aerosol-generating article has a diameter of at least about 5 millimetres.

EX229: An aerosol-generating article according to any one of EX1 to EX228 wherein the aerosol-generating article has a diameter of up to about 10 millimetres.

EX230: An aerosol-generating article according to any one of EX1 to EX229 wherein the aerosol-generating article has a diameter of up to about 9 millimetres.

EX231 : An aerosol-generating system comprising: an aerosol-generating article according to any one of EX1 to EX230; and an aerosol-generating device configured to heat the aerosolgenerating substrate of the aerosol-generating article,

EX232: An aerosol-generating system according to EX231 wherein the aerosolgenerating device comprises an inductor.

EX233: An aerosol-generating system according to EX231 or EX232 wherein the aerosolgenerating device comprises a housing defining a cavity configured to receive at least a portion of the aerosol-generating article.

EX234: An aerosol-generating system according to EX233 wherein the cavity has a length about the same as or less than a length of the aerosol-generating article.

EX235: An aerosol-generating system according to EX233 or EX234 wherein the cavity has a length of at least about 40 millimetres.

EX236: An aerosol-generating system according to any one of EX233 to EX235 wherein the cavity has a length of up to about 85 millimetres.

EX237: An aerosol-generating system according to any one of EX233 to EX236 wherein the cavity has a diameter about the same as or greater than a diameter of the aerosol-generating article.

EX238: An aerosol-generating system according to any one of EX233 to EX237 wherein the cavity has a diameter of at least about 4 millimetres. EX239: An aerosol-generating system according to any one of EX233 to EX238 wherein the cavity has a diameter of up to about 12 millimetres.

EX240: An aerosol-generating system according to any one of EX231 to EX239 wherein the aerosol-generating device comprises an inductor and the inductor comprises one or more induction coils.

EX241 : An aerosol-generating system according to any one of EX233 to EX240 -wherein the aerosol-generating device comprises an inductor and the inductor is located about a perimeter of the cavity of the aerosol-generating device.

EX242: An aerosol-generating system according to any one of EX231 to EX240 wherein the aerosol-generating device comprises a susceptor configured to heat the aerosol-generating substrate of the aerosol-generating article.

EX243: An aerosol-generating system according to EX242 wherein the susceptor is located about a perimeter of the cavity.

EX244: An aerosol-generating system according to any one of EX233 to EX243 wherein the aerosol-generating article comprises one or more air inlets downstream of the combustible heat source, and the aerosol-generating system is configured such that when the aerosolgenerating article is received in the cavity of the aerosol-generating device, air may be drawn into the aerosol-generating article through the one or more air inlets.

EX245: An aerosol-generating system according to any one of EX233 to EX243 wherein the aerosol-generating article comprises one or more air inlets downstream of the combustible heat source, and the aerosol-generating system is configured such that when the aerosolgenerating article is received in the cavity of the aerosol-generating device, air may not be drawn into the aerosol-generating article through the one or more air inlets.

EX246: An aerosol-generating system according to any one of EX233 to EX245 wherein the aerosol-generating system is configured such that when the aerosol-generating article is received in the cavity of the aerosol-generating device, air may be drawn into the aerosolgenerating article through the distal end of the aerosol-generating article.

EX247: An aerosol-generating system according to any one of EX233 to EX244 wherein the aerosol-generating system is configured such that when the aerosol-generating article is received in the cavity of the aerosol-generating device, air may not be drawn into the aerosolgenerating article through the distal end of the aerosol-generating article.

The invention will be further described, by way of example only, with reference to the accompanying drawings in which:

Figure 1 shows a schematic perspective view of an aerosol-generating article in accordance with a first embodiment of the first aspect of the invention comprising a wrapper and an outer wrapper, with the wrapper and the outer wrapper unwrapped; Figure 2 shows a schematic side sectional view of an aerosol-generating system in accordance with a first embodiment of the second aspect of the invention comprising the aerosolgenerating article of Figure 1 and an aerosol-generating device, wherein the combustible heat source of the aerosol-generating article has been removed;

Figure 3 shows a schematic perspective view of an aerosol-generating article in accordance with a second embodiment of the first aspect of the invention comprising a wrapper and an outer wrapper, with the wrapper and the outer wrapper unwrapped;

Figure 4 shows a schematic side sectional view of an aerosol-generating system in accordance with a second embodiment of the second aspect of the invention comprising the aerosol-generating article of Figure 3 and an aerosol-generating device, wherein the combustible heat source of the aerosol-generating article has been removed;

Figure 5 shows a schematic perspective of an aerosol-generating article in accordance with a third embodiment of the first aspect of the invention comprising a wrapper and an outer wrapper, with the wrapper and the outer wrapper unwrapped; and

Figure 6 shows a schematic perspective view of an aerosol-generating article in accordance with a fourth embodiment of the first aspect of the invention comprising a wrapper and an outer wrapper, with the wrapper and the outer wrapper unwrapped.

Figure 1 shows an aerosol-generating article 100 in accordance with a first embodiment of the first aspect of the invention. The aerosol-generating article 100 comprises a combustible heat source 110, an aerosol-generating substrate 120 downstream of the combustible heat source 110, and a wrapper 130 circumscribing a rear portion of the combustible heat source 110 and a front portion of the aerosol-generating substrate 120. The wrapper 130 is a heat-conductive wrapper 130. As described further below, the aerosol-generating article 100 is configured such that the combustible heat source 110 is removable from the aerosol-generating article 100.

The heat-conductive wrapper 130 is shown with horizontal lines in Figure 1 to help distinguish the wrapper 130 from other components of the aerosol-generating article 100. These horizontal lines are not intended to illustrate features of the heat-conductive wrapper 130.

The combustible heat source 110 is a blind combustible carbonaceous heat source 110. The combustible heat source has a length of about 9 millimetres.

The aerosol-generating substrate 120 comprises tobacco material. The aerosolgenerating substrate 120 has a length of about 18.5 millimetres.

As shown in Figure 1 , a non-combustible substantially air impermeable barrier 140 in the form of a disc of aluminium foil is provided between a downstream end of the combustible heat source 110 and an upstream end of the aerosol-generating substrate 120.

The barrier 140 is affixed to the downstream end of the combustible heat source 110 by pressing the disc of aluminium foil onto the downstream end of the combustible heat source 110 and abuts the downstream end of the combustible heat source 110 and the upstream end of the aerosol-generating substrate 120.

The heat-conductive wrapper 130 is formed of a heat-conductive material. For example, the heat-conductive wrapper 130 may be an aluminium foil wrapper.

A circumferential line of weakness 135 is provided in the wrapper 130. The circumferential line of weakness 135 is a circumferential line of perforations and is located at the downstream end of the non-combustible, substantially air-impermeable barrier 140.

The aerosol-generating article comprises an airflow directing element 150 downstream of the aerosol-generating substrate 120. The airflow directing element 150 comprises an open- ended, substantially air impermeable hollow tube (not shown) made of, for example, cardboard, which is of reduced diameter compared to the aerosol-generating substrate 120. The open- ended, substantially air-impermeable hollow tube has a length of about 6.5 millimetres and a diameter of about 2.8 millimetres. The upstream end of the open-ended hollow tube abuts the aerosol-forming substrate 120. The downstream end of the open-ended hollow tube is surrounded by an annular substantially air impermeable seal (not shown) of substantially the same diameter as the aerosol-forming substrate 120. The remainder of the open-ended hollow tube is circumscribed by an annular air-permeable diffuser (not shown) made of, for example, cellulose acetate tow, which is of substantially the same diameter as the aerosol-forming substrate 120.

The aerosol-generating article 100 comprises a transfer element 160 located downstream of the airflow directing element 150. The transfer element 160 comprises a cylindrical open- ended hollow tube made of, for example, cardboard which is of substantially the same diameter as the aerosol-forming substrate 120.

The aerosol-generating article 100 comprises a mouthpiece 170 located downstream of transfer element 160 at the proximal end of the aerosol-generating article 100. The mouthpiece 170 comprises a cylindrical plug of, for example, cellulose acetate tow of very low filtration efficiency.

The combustible heat source 110, aerosol-forming substrate 120, heat-conductive wrapper 130, airflow directing element 150, transfer element 160 and mouthpiece 170 are overwrapped in an outer wrapper 180 of, for example, cigarette paper 12 of low air permeability.

A plurality of air inlets 185 is provided in the outer wrapper 180 about the periphery of the airflow directing element 150.

A circumferential line of weakness (not shown) is also provided in the outer wrapper 180. The circumferential line of weakness is a circumferential line of perforations and is located at the downstream end of the non-combustible, substantially air-impermeable barrier 140. The circumferential line of weakness provided in the outer wrapper 180 is substantially aligned with the circumferential line of weakness 135 provided in the heat-conductive wrapper 130.

In use, to use the aerosol-generating article 100 without an electrically aerosol-generating device, a user ignites the combustible heat source 110. Once the combustible heat source 110 is ignited the user draws on the mouthpiece 170 of the aerosol-generating article 100. When a user draws on the mouthpiece 170, air is drawn into the aerosol-generating article 100 through the plurality of air inlets 185 about the periphery of the airflow directing element 150. The drawn air passes through the annular air-permeable diffuser of the airflow directing element 150 to the aerosol-generating substrate 120.

The aerosol-generating substrate 120 is heated by conductive heat transfer from the combustible heat source 110 through the non-combustible substantially air impermeable barrier 140 and the heat-conductive wrapper 130. Heating of the aerosol-generating substrate 120 releases volatile and semi-volatile compounds from the tobacco material, which form an aerosol that is entrained in the drawn air as it flows through the aerosol-generating substrate 120. The drawn air and entrained aerosol pass through the interior of the open-ended hollow tube of the airflow directing element 150 to the transfer element 160, where they cool and condense. The cooled aerosol then passes through the mouthpiece 170 of the aerosol-generating article 100 into the mouth of the user.

It will be appreciated that, in addition to or instead of the plurality of air inlets 185 provided in the outer wrapper 180 about the periphery of the airflow directing element 150, the aerosolgenerating article 100 may comprise one or more air inlets provided about the periphery of the aerosol-generating substrate 120 through which air may be drawn into the aerosol-generating article 100. For example, the aerosol-generating article 100 may comprise one or more air inlets provided in the outer wrapper 180 and the heat-conductive wrapper 130 about the periphery of the aerosol-generating substrate 120.

It will be also be appreciated that the aerosol-generating article 100 may comprise a nonblind combustible heat source rather than a blind combustible heat source. It will be further appreciated that where the aerosol-generating article 100 comprises a non-blind combustible heat source, no air inlets may be provided about the periphery of the aerosol-generating article for drawing air into the aerosol-generating article.

A user may remove the combustible heat source 110 in order to use the aerosolgenerating article 100 with an electrically aerosol-generating device. To remove the combustible heat source 110 and the non-combustible substantially air impermeable barrier 140 affixed to the downstream end of the combustible heat source 110, a user may break the outer wrapper 180 along the line of weakness provided in the outer wrapper in order to remove a front portion of the outer wrapper 180 extending from the upstream end of the outer wrapper 180 to the line of weakness provided in the outer wrapper 180, and break the heat-conductive wrapper 130 along the line of weakness 135 in order to remove a front portion of the heat-conductive wrapper 130 extending from the upstream end of the heat-conductive wrapper 130 to the line of weakness 135.

Following removal of the combustible heat source, the user may use the aerosolgenerating article 100 with an electrically aerosol-generating device.

Figure 2 shows an aerosol-generating system in accordance with a first embodiment of the second aspect of the invention comprising the aerosol-generating article 100 in accordance with the first embodiment of the first aspect of the invention shown in Figure 1 and an aerosolgenerating device 200, wherein the front portion of the outer wrapper 180, the front portion of the heat-conductive wrapper 130, the combustible heat source 110 and the non-combustible substantially air impermeable barrier 140 have been removed from the aerosol-generating article 100. For clarity, the remaining rear portion of the outer wrapper 180 is not shown in Figure 2.

The aerosol-generating device 200 comprises a housing defining a cavity configured to receive the aerosol-generating article 100, an inductor 210, and a susceptor 210. The susceptor 210 is located around a perimeter of the cavity. The inductor 220 circumscribes the susceptor 210.

The aerosol-generating device 200 further comprises a power supply in the form of a battery (not shown), such as a rechargeable lithium ion battery, and control circuity (not shown). The control circuitry controls the supply of electrical power from the battery to the inductor 210.

In use, a fluctuating or alternating electromagnetic field produced by the inductor 210 induces eddy currents in the susceptor 220 of the aerosol-generating device 200. This causes the susceptor 220 of the aerosol-generating device 200 to heat up.

The user draws on the mouthpiece 170 of the aerosol-generating article 100. The aerosolgenerating system is configured such that when a user draws on the mouthpiece 170, air is drawn into the aerosol-generating article 100 through the plurality of air inlets 185 about the periphery of the airflow directing element 150 and not through the distal end of the aerosol-generating article 100. The drawn air passes through the annular air-permeable diffuser of the airflow directing element 150 to the aerosol-generating substrate 120.

The aerosol-generating substrate 120 is heated by conductive heat transfer from the susceptor 220. Heating of the aerosol-generating substrate 120 releases volatile and semivolatile compounds from the tobacco material, which form an aerosol that is entrained in the drawn air as it flows through the aerosol-generating substrate 120. The drawn air and entrained aerosol pass through the interior of the open-ended hollow tube of the airflow directing element 150 to the transfer element 160, where they cool and condense. The cooled aerosol then passes through the mouthpiece 170 of the aerosol-generating article 100 into the mouth of the user. Figure 3 shows an aerosol-generating article 300 in accordance with a second embodiment of the first aspect of the invention. The aerosol-generating article 300 is similar to the aerosol-generating article 100 shown in Figure 1 and like reference numerals are used to designate like parts.

The aerosol-generating article 300 differs from the aerosol-generating article 100 shown in Figure 1 in that the wrapper 330 is both heat-conductive and inductively-heatable. The wrapper 330 is formed of a material that is both heat-conductive and inductively-heatable. For example, the wrapper 330 may be an aluminium foil wrapper.

In use, to use the aerosol-generating article 300 without an electrically aerosol-generating device, a user ignites the combustible heat source 110. Once the combustible heat source 110 is ignited the user draws on the mouthpiece 170 of the aerosol-generating article 300. When a user draws on the mouthpiece 170, air is drawn into the aerosol-generating article 300 through the plurality of air inlets 185 about the periphery of the airflow directing element 150. The drawn air passes through the annular air-permeable diffuser of the airflow directing element 150 to the aerosol-generating substrate 120.

The aerosol-generating substrate 120 is heated by conductive heat transfer from the combustible heat source 110 through the non-combustible substantially air impermeable barrier 140 and the heat-conductive and inductively-heatable wrapper 330. Heating of the aerosolgenerating substrate 120 releases volatile and semi-volatile compounds from the tobacco material, which form an aerosol that is entrained in the drawn air as it flows through the aerosolgenerating substrate 120. The drawn air and entrained aerosol pass through the interior of the open-ended hollow tube of the airflow directing element 150 to the transfer element 160, where they cool and condense. The cooled aerosol then passes through the mouthpiece 170 of the aerosol-generating article 300 into the mouth of the user.

A user may remove the combustible heat source 110 in order to use the aerosolgenerating article 300 with an electrically aerosol-generating device. To remove the combustible heat source 110 and the non-combustible substantially air impermeable barrier 140 affixed to the downstream end of the combustible heat source 110, a user may break the outer wrapper 180 along the line of weakness provided in the outer wrapper in order to remove a front portion of the outer wrapper 180 extending from the upstream end of the outer wrapper 180 to the line of weakness provided in the outer wrapper 180 and break the heat-conductive and inductively- heatable wrapper 330 along the line of weakness 135 in order to remove a front portion of the heat-conductive and inductively-heatable wrapper 330 extending from the upstream end of the heat-conductive and inductively-heatable wrapper 330 to the line of weakness 135.

Following removal of the combustible heat source, the user may use the aerosolgenerating article 100 with an electrically aerosol-generating device. Figure 4 shows an aerosol-generating system in accordance with a second embodiment of the second aspect of the invention comprising the aerosol-generating article 300 in accordance with the second embodiment of the first aspect of the invention shown in Figure 3 and an aerosolgenerating device 400, wherein the front portion of the outer wrapper 180, the front portion of the heat-conductive and inductively-heatable wrapper 330, the combustible heat source 110 and the non-combustible substantially air impermeable barrier 140 have been removed from the aerosolgenerating article 300. For clarity, the remaining rear portion of the outer wrapper 180 is not shown in Figure 4.

The aerosol-generating device 400 is similar to the aerosol-generating device 200 shown in Figure 2. The aerosol-generating device 400 differs from the aerosol-generating device 200 shown in Figure 2 in that the aerosol-generating device 400 does not comprises a susceptor, and the inductor 410 is located around a perimeter of the cavity of the aerosol-generating device 400.

In use, a fluctuating or alternating electromagnetic field produced by the inductor 410 induces eddy currents in the heat-conductive and inductively-heatable wrapper 330 of the aerosol-generating article 300. This causes the heat-conductive and inductively-heatable wrapper 330 of the aerosol-generating article 300 to heat up.

The user draws on the mouthpiece 170 of the aerosol-generating article 300. The aerosolgenerating system is configured such that when a user draws on the mouthpiece 170, air is drawn into the aerosol-generating article 300 through the plurality of air inlets 185 about the periphery of the airflow directing element 150 and not through the distal end of the aerosol-generating article 300. The drawn air passes through the annular air-permeable diffuser of the airflow directing element 150 to the aerosol-generating substrate 120.

The aerosol-generating substrate 120 is heated by conductive heat transfer from the heat- conductive and inductively-heatable wrapper 330. Heating of the aerosol-generating substrate 120 releases volatile and semi-volatile compounds from the tobacco material, which form an aerosol that is entrained in the drawn air as it flows through the aerosol-generating substrate 120. The drawn air and entrained aerosol pass through the interior of the open-ended hollow tube of the airflow directing element 150 to the transfer element160, where they cool and condense. The cooled aerosol then passes through the mouthpiece 170 of the aerosol-generating article 300 into the mouth of the user.

Figure 5 shows an aerosol-generating article 500 in accordance with a third embodiment of the first aspect of the invention. The aerosol-generating article 500 is similar to the aerosolgenerating article 100 shown in Figure 1 and like reference numerals are used to designate like parts.

The aerosol-generating article 500 differs from the aerosol-generating article 100 shown in Figure 1 in that the wrapper 530 comprises a heat-conductive portion 532 and an inductively- heatable portion 534 downstream of the heat-conductive portion 532. The heat-conductive portion 532 extends from the upstream end of the wrapper 530 to the inductively-heatable portion 534. The inductively-heatable portion 534 extends from the downstream end of the heat- conductive portion 532 to the downstream end of the wrapper 530.

The heat-conductive portion 532 of the wrapper 530 is shown with horizontal lines in Figure 5 to help distinguish the heat-conductive portion 532 of the wrapper 530 from other components of the aerosol-generating article 500. These horizontal lines are not intended to illustrate features of the heat-conductive portion 532 of the wrapper 530.

The heat-conductive portion 532 of the wrapper 530 circumscribes a rear portion of the combustible heat source 110, the non-combustible, substantially air-impermeable barrier 140, and a front portion of the aerosol-generating substrate 120. The line of weakness 135 is provided in the heat-conductive portion 532 of the wrapper 530.

The wrapper 530 comprises a non-heat-conductive and non-inductively-heatable substrate. A heat-conductive material is disposed on the non-heat-conductive and non- inductively-heatable substrate to form the heat-conductive portion 532 of the wrapper 530. For example, a layer of aluminium foil may be disposed on the non-heat-conductive and non- inductively-heatable substrate to form the heat-conductive portion 532 of the wrapper 530. An inductively-heatable material 536 is disposed on the non-heat-conductive and non-inductively- heatable substrate to form the inductively-heatable portion 534 of the wrapper 530. The inductively-heatable material 536 is disposed in a plurality of spaced apart transverse lines on the non-heat-conductive and non-inductively-heatable substrate.

In use, to use the aerosol-generating article 500 without an electrically aerosol-generating device, a user ignites the combustible heat source 110. Once the combustible heat source 110 is ignited the user draws on the mouthpiece 170 of the aerosol-generating article 500. When a user draws on the mouthpiece 170, air is drawn into the aerosol-generating article 500 through the plurality of air inlets 185 about the periphery of the airflow directing element 150. The drawn air passes through the annular air-permeable diffuser of the airflow directing element 150 to the aerosol-generating substrate 120.

The aerosol-generating substrate 120 is heated by conductive heat transfer from the combustible heat source 110 through the non-combustible substantially air impermeable barrier 140 and the heat-conductive portion 532 of the wrapper 530. Heating of the aerosol-generating substrate 120 releases volatile and semi-volatile compounds from the tobacco material, which form an aerosol that is entrained in the drawn air as it flows through the aerosol-generating substrate 120. The drawn air and entrained aerosol pass through the interior of the open-ended hollow tube of the airflow directing element 150 to the transfer element 160, where they cool and condense. The cooled aerosol then passes through the mouthpiece 170 of the aerosolgenerating article 500 into the mouth of the user.

A user may remove the combustible heat source 110 in order to use the aerosolgenerating article 500 with an electrically aerosol-generating device. To remove the combustible heat source 110 and the non-combustible substantially air impermeable barrier 140 affixed to the downstream end of the combustible heat source 110, a user may break the outer wrapper 180 along the line of weakness provided in the outer wrapper in order to remove a front portion of the outer wrapper 180 extending from the upstream end of the outer wrapper 180 to the line of weakness provided in the outer wrapper and break the heat-conductive and inductively-heatable wrapper 530 along the line of weakness 135 in order to remove a front portion of the wrapper 530 extending from the upstream end of the wrapper 530 to the line of weakness 135.

Following removal of the combustible heat source, the user may use the aerosolgenerating article 500 with an electrically aerosol-generating device comprising an inductor, such as the aerosol-generating device 400 shown in Figure 4.

In use, fluctuating or alternating electromagnetic field produced by the inductor 410 induces eddy currents in the inductively-heatable material 536 of the inductively-heatable portion 534 of the wrapper 530 of the aerosol-generating article 500. This causes the inductively- heatable material 536 of the aerosol-generating article 500 to heat up. The heat generated in the inductively-heatable material 536 is transferred to the aerosol-generating substrate 120 of the aerosol-generating article 500 by conduction.

In use, a fluctuating or alternating electromagnetic field produced by the inductor 410 induces eddy currents in the inductively-heatable material 536 of the inductively-heatable portion 534 of the wrapper 530 of the aerosol-generating article 500. This causes the inductively- heatable material 536 of the inductively-heatable portion 534 of the wrapper 530 of the aerosolgenerating article 500 to heat up.

The user draws on the mouthpiece 170 of the aerosol-generating article 500. When a user draws on the mouthpiece 170, air is drawn into the aerosol-generating article 500 through the plurality of air inlets 185 about the periphery of the airflow directing element 150 and not through the distal end of the aerosol-generating article 500. The drawn air passes through the annular air-permeable diffuser of the airflow directing element 150 to the aerosol-generating substrate 120.

The aerosol-generating substrate 120 is heated by conductive heat transfer from the inductively-heatable material 536 of the inductively-heatable portion 534 of the wrapper 530. Heating of the aerosol-generating substrate 120 releases volatile and semi-volatile compounds from the tobacco material, which form an aerosol that is entrained in the drawn air as it flows through the aerosol-generating substrate 120. The drawn air and entrained aerosol pass through the interior of the open-ended hollow tube of the airflow directing element 150 to the transfer element 160, where they cool and condense. The cooled aerosol then passes through the mouthpiece 170 of the aerosol-generating article 500 into the mouth of the user.

Figure 6 shows an aerosol-generating article 600 in accordance with a fourth embodiment of the first aspect of the invention. The aerosol-generating article 600 is similar to the aerosolgenerating article 100 shown in Figure 1 and like reference numerals are used to designate like parts.

The aerosol-generating article 600 differs from the aerosol-generating article 100 shown in Figure 1 in that the aerosol-generating article 600 comprises a susceptor 690 (shown in dashed lines) located within the aerosol-generating substrate 120. The susceptor 690 extends from the upstream end of the aerosol-generating substrate 120 to the downstream end of the aerosolgenerating substrate 120.

In use, to use the aerosol-generating article 600 without an electrically aerosol-generating device, a user ignites the combustible heat source 110. Once the combustible heat source 110 is ignited the user draws on the mouthpiece 170 of the aerosol-generating article 600. When a user draws on the mouthpiece 170, air is drawn into the aerosol-generating article 600 through the plurality of air inlets 185 about the periphery of the airflow directing element 150. The drawn air passes through the annular air-permeable diffuser of the airflow directing element 150 to the aerosol-generating substrate 120.

The aerosol-generating substrate 120 is heated by conductive heat transfer from the combustible heat source 110 through the non-combustible substantially air impermeable barrier 140 and the heat-conductive wrapper 130. Heating of the aerosol-generating substrate 120 releases volatile and semi-volatile compounds from the tobacco material, which form an aerosol that is entrained in the drawn air as it flows through the aerosol-generating substrate 120. The drawn air and entrained aerosol pass through the interior of the open-ended hollow tube of the airflow directing element 150 to the transfer element 160, where they cool and condense. The cooled aerosol then passes through the mouthpiece 170 of the aerosol-generating article 600 into the mouth of the user.

A user may remove the combustible heat source 110 in order to use the aerosolgenerating article 100 with an electrically aerosol-generating device. To remove the combustible heat source 110 and the non-combustible substantially air impermeable barrier 140 affixed to the downstream end of the combustible heat source 110, a user may break the outer wrapper 180 along the line of weakness provided in the outer wrapper in order to remove a front portion of the outer wrapper 180 extending from the upstream end of the outer wrapper 180 to the line of weakness provided in the outer wrapper and break the heat-conductive wrapper 130 along the line of weakness 135 in order to remove a front portion of the heat-conductive wrapper 130 extending from the upstream end of the heat-conductive wrapper 130 to the line of weakness 135.

Following removal of the combustible heat source, the user may use the aerosolgenerating article 600 with an electrically aerosol-generating device comprising an inductor, such as the aerosol-generating device 400 shown in Figure 4.

In use, a fluctuating or alternating electromagnetic field produced by the inductor 410 induces eddy currents in the susceptor 690 of the aerosol-generating article 600. This causes the susceptor 690 of the aerosol-generating article 600 to heat up.

The user draws on the mouthpiece 170 of the aerosol-generating article 600. When a user draws on the mouthpiece 170, air is drawn into the aerosol-generating article 600 through the plurality of air inlets 185 about the periphery of the airflow directing element 150 and not through the distal end of the aerosol-generating article 600. The drawn air passes through the annular air-permeable diffuser of the airflow directing element 150 to the aerosol-generating substrate 120.

The aerosol-generating substrate 120 is heated by conductive heat transfer from the susceptor 690. Heating of the aerosol-generating substrate 120 releases volatile and semivolatile compounds from the tobacco material, which form an aerosol that is entrained in the drawn air as it flows through the aerosol-generating substrate 120. The drawn air and entrained aerosol pass through the interior of the open-ended hollow tube of the airflow directing element 150 to the transfer element 160, where they cool and condense. The cooled aerosol then passes through the mouthpiece 170 of the aerosol-generating article 600 into the mouth of the user.

The specific embodiments and examples described above illustrate, but do not limit, the invention. It is to be understood that other embodiments of the invention may be made and the specific embodiments and examples described herein are not exhaustive.

For the purpose of the present description and of the appended claims, except where otherwise indicated, all numbers expressing amounts, quantities, percentages, and so forth, are to be understood as being modified in all instances by the term "about". Also, all ranges include the maximum and minimum points disclosed and include any intermediate ranges therein, which may or may not be specifically enumerated herein. In this context, therefore, a number A is understood as A ± 10 % of A. Within this context, a number A may be considered to include numerical values that are within general standard error for the measurement of the property that the number A modifies. The number A, in some instances as used in the appended claims, may deviate by the percentages enumerated above provided that the amount by which A deviates does not materially affect the basic and novel characteristic(s) of the claimed invention. Also, all ranges include the maximum and minimum points disclosed and include any intermediate ranges therein, which may or may not be specifically enumerated herein.

Claims

- 62 - CLAIMS

1 . An aerosol-generating article comprising: a combustible heat source; an aerosol-generating substrate downstream of the combustible heat source; and a wrapper circumscribing at least a rear portion of the combustible heat source and at least a front portion of the aerosol-generating substrate, wherein the wrapper is one or both of heat-conductive and inductively-heatable, and wherein the aerosol-generating article is configured such that the combustible heat source is removable from the aerosol-generating article.

2. An aerosol-generating article according to claim 1 further comprising a transverse line of weakness provided in the wrapper, wherein the wrapper is breakable along the transverse line of weakness to facilitate removal of the combustible heat source.

3. An aerosol-generating article according to claim 2 wherein the transverse line of weakness provided in the wrapper is located between an upstream end of the rear portion of the combustible heat source and a downstream end of the front portion of the aerosol-generating substrate, and wherein the wrapper is breakable along the transverse line of weakness to remove a front portion of the wrapper extending from an upstream end of the wrapper to the line of weakness.

4. An aerosol-generating article according to any one of claims 1 to 3 wherein the wrapper is heat-conductive.

5. An aerosol-generating article according to any one of claims 1 to 4 wherein the wrapper is inductively-heatable.

6. An aerosol-generating article according to any one of claims 1 to 5 wherein the wrapper comprises a non-inductively-heatable substrate and an inductively-heatable material disposed on the substrate.

7. An aerosol-generating article according to claim 6 wherein the inductively-heatable material is discontinuous in a longitudinal direction of the aerosol-generating article. - 63 -

8. An aerosol-generating article according to any one of claims 1 to 7 wherein the wrapper comprises a heat-conductive portion and an inductively-heatable portion downstream of the heat- conductive portion.

9. An aerosol-generating article according to claim 8 wherein the heat-conductive portion of the wrapper circumscribes the rear portion of the combustible heat source and an upstream portion of the front portion of the aerosol-generating substrate.

10. An aerosol-generating article according to any one of claims 1 to 9 further comprising a susceptor located within the aerosol-generating substrate.

11. An aerosol-generating article according to any one of claims 1 to 10 wherein the transverse line of weakness provided in the wrapper is located within about 0.2L of a downstream end of the combustible heat source, where L is the length of the combustible heat source.

12. An aerosol-generating article according to any one of claims 1 to 11 wherein the transverse line of weakness provided in the wrapper is located within about 2 millimetres of a downstream end of the combustible heat source.

13. An aerosol-generating article according to any one of claims 1 to 12 further comprising: an outer wrapper circumscribing the wrapper; and a transverse line of weakness provided in the outer wrapper.

14. An aerosol-generating system comprising: an aerosol-generating article according to any one of claims 1 to 13; and an aerosol-generating device configured to heat the aerosol-generating substrate of the aerosol-generating article, wherein the aerosol-generating device comprises an inductor.

15. An aerosol-generating system according to claim 14 wherein the aerosol-generating device comprises a susceptor.