RU2796278C2 - Tubular element for use with aerosol generating article - Google Patents

Abstract

FIELD: aerosol generating devices.

SUBSTANCE: tubular element (500), preferably containing a gel (124) containing an active agent, for use with an aerosol generating article (100), preferably for use with an aerosol generating device (200).

EFFECT: various active substances can be released into the generated or released aerosol from the tubular element (500), preferably when the tubular element (500) is heated.

15 cl, 34 dwg

Description

The present invention relates to a tubular element for use with an aerosol generating article (an aerosol generating article), the tubular element comprising a gel.

Articles containing nicotine are known for use with aerosol generating devices. Often, articles contain a liquid, such as e-liquid, which is heated by a coiled electrically resistive filament to release an aerosol. The manufacture, transport and storage of such liquid-containing aerosol generating articles can be problematic and may result in leakage of the liquid and liquid contents.

It would be desirable to provide a tubular element for use in an aerosol generating article and an apparatus in which the tubular element is virtually non-leakable.

It would also be desirable to provide a tubular member that includes a flow control system that efficiently delivers the aerosol generated from the tubular member when heated by the aerosol generating device.

According to the present invention, a tubular element is provided, the tubular element comprising a wrapper that defines a first longitudinal passage; wherein the tubular element further comprises a gel; moreover, the gel contains the active substance.

The present invention also provides a tubular element, and the tubular element includes a wrapper that defines the first longitudinal passage; wherein the tubular element further comprises a gel; moreover, the gel contains the active substance; wherein the wrapper contains paper; and the wrap is waterproof.

In specific embodiments, the implementation of the gel completely fills the tubular element within the wrapper.

In some embodiments, the implementation of the tubular element contains a wrapper, while the wrapper contains paper.

Alternatively, in specific embodiments, the implementation of the gel may partially fill the tubular element. For example, in specific embodiments, the implementation of the gel is provided as a coating on the inner surface of the tubular element. The advantage of only partially filling the tubular is that it leaves a path for fluid, for example for aerosol to flow into or out of the tubular.

In combination with specific embodiments, the tubular element comprises a second tubular element.

In combination with specific embodiments, the tubular element comprises a second tubular element comprising a longitudinal side portion and proximal and distal ends; and moreover, the second tubular element is located longitudinally within the first longitudinal passage.

In combination with specific embodiments, the tubular element comprises a plurality of second tubular elements.

In particular embodiments, the tubular element comprises a plurality of second tubular elements arranged in parallel to extend along the longitudinal length of the tubular element. Optionally, the gel is provided in all, some of the plurality of second tubulars, or not provided in any of them. Also, depending on the specific embodiment in which there is a gel in the second tubular, the gel completely fills each of the plurality of second tubulars, or the gel partially fills the second tubulars.

In specific embodiments, the implementation of the tubular element contains a porous medium filled with gel.

In combination with other features, in specific embodiments, one or more of the second tubular elements comprise a porous medium filled with a gel. In the case of the gel-filled porous medium, the gel-filled porous medium completely fills each of the plurality of second tubulars, or the gel-filled porous medium partially fills the second tubulars.

In particular embodiments, the gel-filled porous medium is located between the second tubular and the wrapper.

In specific embodiments, the implementation of the longitudinal side of the second tubular element contains paper, or cardboard, or cellulose acetate.

In specific embodiments, the implementation of the second tubular element contains a gel. Preferably, the gel is at least partially enclosed by the longitudinal side portions of the second tubular.

In specific embodiments, the implementation of the gel may be between the second tubular element and the wrapper, which forms the first longitudinal passage.

In combination with specific embodiments, the tubular member has an outer diameter that is approximately equal to the outer diameter of the aerosol generating article.

In specific embodiments, the implementation of the tubular element has an outer diameter ranging from 5 millimeters to 12 millimeters, for example, from 5 millimeters to 10 millimeters or from 6 millimeters to 8 millimeters. Typically, the tubular member has an outside diameter of 7.2 millimeters plus or minus 10 percent.

Typically, the tubular element has a length between 5 millimeters and 15 millimeters. Preferably the tubular has a length of 6 millimeters to 12 millimeters, preferably the tubular has a length of 7 millimeters to 10 millimeters, preferably the tubular has a length of 8 millimeters.

In combination with specific embodiments, the gel is a mixture of materials capable of releasing volatile compounds into an aerosol passing through the tubular, preferably when the gel is heated. Providing the gel may be advantageous for storage and transport or during use because the risk of leakage from the tubular, aerosol generating article or aerosol generating device can be reduced.

Preferably the gel is solid at room temperature. "Solid" in this context means that the gel is of stable size and shape and does not flow. Room temperature in this context means 25 degrees Celsius.

The gel may contain an aerosol generating agent. Ideally, the aerosol generating agent is substantially resistant to thermal degradation at the operating temperature of the tubular. Suitable aerosol forming agents are well known in the art and include, but are not limited to: polyhydric alcohols such as triethylene glycol, 1,3-butanediol, and glycerin; 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. The polyhydric alcohols or mixtures thereof may be one or more of triethylene glycol, 1,3-butanediol and glycerol or polyethylene glycol.

Advantageously, the gel, for example, contains a thermoreversible gel. This means that the gel will become fluid when heated to its melting temperature and will set to gel again at the gel temperature. The gelation temperature may occur at or above room temperature and atmospheric pressure. Atmospheric pressure means a pressure equal to 1 atmosphere. The melting temperature may exceed the gelation temperature. The melting point of the gel may exceed 50 degrees Celsius, or 60 degrees Celsius, or 70 degrees Celsius and may exceed 80 degrees Celsius. Melting point in this context means the temperature at which the gel is no longer solid and begins to flow.

Alternatively, in particular embodiments, the gel is a non-melting gel that does not melt during use of the tubular. In these embodiments, the gel may release the active agent at least in part at a temperature that is equal to or greater than the operating temperature of the tubular in use, but which is below the melting point of the gel.

Preferably the gel has a viscosity of 50,000 to 10 pascals per second, preferably 10,000 to 1000 pascals per second, to obtain the desired viscosity.

In combination with specific embodiments, the gel contains a gelling agent. In specific embodiments, the implementation of the gel contains agar, or agarose, or sodium alginate, or gellan gum, or a mixture thereof.

In specific embodiments, the implementation of the gel contains water, for example, the gel is a hydrogel. Alternatively, in specific embodiments, the implementation of the gel is non-aqueous.

Preferably the gel contains an active agent. In combination with specific embodiments, the active substance contains nicotine (eg, in powder form or liquid form), or a tobacco product, or other target compound, for example, to be released into an aerosol. In specific embodiments, the implementation of nicotine is included in the gel along with the substance to form an aerosol. Keeping the nicotine in the gel at room temperature is desirable to prevent leakage.

In specific embodiments, the implementation of the gel contains solid tobacco material, which releases flavoring compounds when heated. Depending on specific embodiments, solid tobacco material is, for example, one or more of: powder, granules, pellets, pieces, thin tubes, strips, or sheets containing one or more of: plant material, such as grass leaves, tobacco leaves , fragments of tobacco stems, reconstituted tobacco, homogenized tobacco, extruded tobacco and expanded tobacco.

There are embodiments in which, in addition or alternatively, for example, the gel contains other flavors, such as menthol. Menthol can be added either to water or to an aerosolizer prior to gel formation.

The gel preferably contains a gelling agent. The gelling agent may form a solid medium in which the aerosolizing agent may be distributed.

The gel may contain any suitable gelling agent. For example, the gelling agent may contain one or more biopolymers, such as two or three biopolymers. Preferably, if the gel contains more than one biopolymer, the biopolymers are present in substantially equal weights. Biopolymers can be formed from polysaccharides. Suitable biopolymers as gelling agents include, for example, gellan gums (natural, low acyl gellan gum, high acyl gellan gums, with low acyl gellan gum being preferred), xanthan gum, alginates (alginic acid) , agar, guar gum, and the like. Preferably, the gel contains agar.

The gel may contain any suitable amount of gelling agent. For example, the gel contains a gelling agent in the range of about 0.5 percent by weight to about 7 percent by weight of the gel. Preferably, the gel contains a gelling agent in the range of from about 1 percent by weight to about 5 percent by weight, for example, from about 1.5 percent by weight to about 2.5 percent by weight.

In some preferred embodiments, the gel contains agar in the range from about 0.5 percent by weight to about 7 percent by weight, or in the range from about 1 percent by weight to about 5 percent by weight, or in an amount of about 2 percent by weight.

In some preferred embodiments, the gel contains xanthan gum in the range of about 2 percent by weight to about 5 percent by weight, or in the range of about 2 percent by weight to about 4 percent by weight, or in an amount of about 3 percent by weight.

In some preferred embodiments, the implementation of the gel contains xanthan gum, gellan gum and agar. The gel may contain xanthan gum, low acyl gellan gum, and agar. The gel may contain xanthan gum, gellan gum and agar in substantially equal weights. The gel may contain xanthan gum, low acyl gellan gum and agar in substantially equal weights. The gel may contain xanthan gum, low acyl gellan gum, and agar in the range of from about 1 percent by weight to about 5 percent by weight (for the total weight of xanthan gum, low acyl gellan gum, and agar in the gel), or in the range from about 1 percent by weight to about 4 percent by weight, or in an amount of about 2 percent by weight. The gel may contain xanthan gum, low acyl gellan gum, and agar in the range of about 1 percent by weight to about 5 percent by weight, or in an amount of about 2 percent by weight, wherein xanthan gum, gellan gum, and agar are substantially equal. weight.

The gel may contain a divalent cation. Preferably the divalent cation contains calcium ions such as calcium lactate in solution. Divalent cations (such as calcium ions) can assist in the gelation of compositions that include biopolymers (polysaccharides) such as gellan gums (natural, low acyl gellan gum, high acyl gellan gums), xanthan gum, alginates ( alginic acid), agar, guar gum, etc. The ionic effect can assist in gel formation. The divalent cation may be present in the gel composition in the range of from about 0.1 to about 1 percent by weight, or in an amount of about 0.5 percent by weight. In some embodiments, the implementation of the gel does not contain a divalent cation.

The gel may contain a carboxylic acid. The carboxylic acid may contain a ketone group. Preferably the carboxylic acid contains a ketone group which has less than 10 carbon atoms. Preferably, this carboxylic acid has five carbon atoms (such as levulinic acid). Levulinic acid can be added to neutralize the pH of the gel. It can also assist in the formation of a gel that includes biopolymers (polysaccharides) such as gellan gums (low acyl gellan gum, high acyl gellan gums), xanthan gum, especially alginates (alginic acid), agar, guar gum and the like. Levulinic acid can also improve the organoleptic profile of the gel formulation. In some embodiments, the implementation of the gel does not contain carboxylic acid.

In embodiments where agar is used as the gelling agent, the gel contains, for example, 0.5 to 5 weight percent, preferably 0.8 to 1 weight percent agar. Preferably, the gel further contains 0.1 to 2 weight percent nicotine. Preferably, the gel additionally contains 30 percent to 90 percent by weight (or 70 to 90 percent by weight) of glycerol. In specific embodiments, the remainder of the gel contains water and flavors.

Preferably, the gelling agent is agar, which tends to melt at temperatures above 85 degrees Celsius and re-gel at about 40 degrees Celsius. This property makes it suitable for hot environments. The gel will not melt at 50 degrees Celsius, which is useful if the system is left, for example, in a heated car in the sun. The liquid phase change at approximately 85 degrees Celsius means that the gel only needs to be heated to a relatively low temperature to induce aerosol formation, resulting in low energy consumption. It may be useful to use only agarose, which is one of the components of agar, instead of agar.

When gellan gum is used as the gelling agent, typically the gel contains 0.5 to 5 weight percent gellan gum. Preferably, the gel further contains 0.1 to 2 weight percent nicotine. Preferably the gel contains from 30 percent to 99.4 percent by weight of glycerol. In specific embodiments, the remainder of the gel contains water and flavors.

In one example, the gel contains 2 weight percent nicotine, 70 weight percent glycerol, 27 weight percent water, and 1 weight percent agar.

In another example, the gel contains 65 weight percent glycerol, 20 weight percent water, 14.3 weight percent tobacco, and 0.7 weight percent agar.

Additionally or alternatively, in specific embodiments, the implementation of the tubular element contains a porous medium filled with gel. Preferably, the gel-filled porous medium is located between the second tubular element and the wrapper, which defines the first longitudinal passage. Alternatively, in some specific embodiments, the implementation of the second tubular element contains a porous medium filled with gel. These embodiments do not necessarily exclude that the gel or gel-filled porous medium is additionally or alternatively elsewhere. In specific embodiments, the implementation of the tubular element contains a gel and a porous medium filled with gel.

In combination with specific embodiments, the tubular element includes a longitudinal element located longitudinally within the first longitudinal passage. In specific embodiments, the implementation of the longitudinal element, located longitudinally within the first longitudinal passage, is a porous medium filled with gel. In other specific embodiments, the longitudinal member may be a longitudinal member of any material that is capable of, for example, occupying space within the tubular member, or facilitating or facilitating the passage of heat or material, or even contributing to structural strength or rigidity.

In some embodiments, the wrapper is strong or rigid to support the structure of the tubular member. It is assumed that the gel used in the present invention is semi-solid, able to hold the shape, especially when used. However, the present invention is not limited to solid gels. More fluid gels, gels with a higher viscosity than solid gels, can also be used with embodiments according to the present invention. Having a wrapper that is itself capable of holding the tubular structure is therefore useful, although not essential. Similarly, the longitudinal side portion of the second tubular may be rigid or strong. Having a wrapper, or a longitudinal side portion of the second tubular, or both a wrapper and a longitudinal side portion of the second tubular, which are strong or actually rigid, may hold the design of the tubular, but may also facilitate fabrication. Preferably, the wrapper has a thickness of from about 50 to 150 micrometers.

In combination with other features, in particular embodiments, the wrapper is water resistant. In specific embodiments, the implementation of the longitudinal side of the second tubular element is water resistant. This water resistance property of either the wrapper or the longitudinal side portion of the second tubular element can be achieved by using a water resistant material or by treating the material of the wrapper or the longitudinal side portion of the second tubular element. This can be achieved by processing one side or both sides of the wrapper or the longitudinal side portion of the second tubular element. The presence of water resistance will assist in not losing structure, strength or rigidity. This may also assist in preventing leakage of the gel or liquid, especially when fluid gels are used.

In combination with specific embodiments, the tubular element comprises a current collector (susceptor). The current collector may be any heat transfer material, for example, it may be a metal filament, such as aluminum filament, or a filament containing aluminum or metal powder, such as, for example, aluminum powder. As a rule, the current collector is located longitudinally inside the tubular element. The current collector (susceptor) may be located within the gel, or adjacent to or next to it; or in a porous medium filled with gel, or adjacent to or next to it.

In combination with specific embodiments, the tubular element further comprises a thread. It may be of any material, natural or synthetic, but preferably cotton, or paper, or acetate rod, or a combination thereof. The thread may be a delivery vehicle for carrying an active ingredient, such as a flavoring agent. An example of a suitable flavoring agent for use in the present invention would be menthol. The thread may extend longitudinally within the tubular element. Preferably, the thread may be inside the gel, or adjacent to or next to it; or within a porous medium filled with gel, or adjacent to, or next to it.

In combination with specific embodiments, the tubular element further comprises sheet material. In combination with specific embodiments, the gel-filled porous medium comprises sheet material. Providing the porous gel-filled material as a sheet material can have manufacturing advantages, for example, the sheet material can be easily assembled together to form a suitable structure. The gel may be filled into the sheeting prior to being assembled or filled into the sheeting after being assembled.

According to the present invention, a tubular element is provided, the tubular element comprising a wrapper that defines a first longitudinal channel, the tubular element further comprising a gel-filled porous medium, the gel-filled porous medium further comprising an active agent.

In particular embodiments, the gel-filled porous medium completely fills the tubular element within the wrapper. Alternatively, in other specific embodiments, the implementation of the porous medium only partially fills the tubular element.

In particular embodiments, the tubular element further comprises a second tubular element, wherein the second tubular element has a longitudinal side portion and proximal and distal ends, the second tubular element being positioned longitudinally within the first longitudinal channel formed by the wrap.

In specific embodiments, the implementation of the longitudinal side of the second tubular element contains paper, or cardboard, or cellulose acetate.

In specific embodiments, the implementation of the second tubular element contains a porous medium filled with gel.

In some specific embodiments that have first and second tubulars as described, a gel-filled porous medium is positioned between the second tubular and the wrapper that defines the first longitudinal channel.

In some alternative embodiments that have first and second tubulars, the gel is located between the second tubular and the wrapper that defines the first longitudinal channel.

According to the present invention, a method is provided for manufacturing a tubular element,

wherein the tubular element contains:

at least one longitudinal passage; and additionally contains a gel, and the gel contains the active substance;

wherein the method includes the steps:

placing material for the tubular element around a core that forms the tubular element;

squeezing the gel out of the channel inside the core so that the gel is inside the tubular element.

The method may further include the step of extruding material for the tubular around the core to form the tubular.

The manufacturing method may further include the step of wrapping the tubular element with a wrapper.

According to the present invention, a method is provided for manufacturing a tubular element,

wherein the tubular element contains:

a wrapper forming the first longitudinal channel and additionally contains a porous medium filled with gel, and the porous medium filled with gel additionally contains an active substance, and at the same time

the method includes the steps:

distributing the porous medium filled with gel over the web of the wrapping material;

wrapping the wrapping material around a porous medium filled with gel.

In specific embodiments, in combination with other features, the method for manufacturing the tubular further includes the step of cutting the rolled tubular into segments.

According to the present invention, a method is provided for manufacturing a tubular element,

wherein the tubular element contains:

a wrapper forming the first longitudinal channel, and additionally contains a porous medium filled with gel, and the porous medium filled with gel additionally contains an active substance; And

the second tubular element;

wherein the method includes the steps:

distributing the gel-filled porous medium over the wrapping web; and distributing the second tubular element over the gel-filled porous medium on the wrapping web;

wrapping the wrapping material around the gel-filled porous medium and the second tubular member.

In specific embodiments, the manufacturing method further includes the step of cutting the rolled tubular into segments.

It is contemplated that the tubular member of the present invention is used in an aerosol generating article. It is also contemplated that the aerosol generating article can be used in a device, such as an aerosol generating device. The aerosol generating device can be used to hold and heat the aerosol generating article(s) to release material. In particular, it may be the release of material from the tubular element according to the present invention.

According to the present invention, an aerosol generating article for generating an aerosol is provided, the aerosol generating article comprising:

a fluid guide to enable movement of the fluid, the fluid guide having a proximal end and a distal end, the fluid guide having an inner longitudinal portion and an outer longitudinal portion separated by a partition, the inner longitudinal portion comprising an inner longitudinal passage between the distal end and proximal end, and the outer portion includes a longitudinal passage that communicates the outer fluid through at least one hole with the distal end of the fluid guide, whereby the outer fluid can move along the outer longitudinal passage to the distal end of the fluid guide; And

a tubular element that contains a gel, the gel containing an active substance, and the tubular element has a proximal end and a distal end and is located on the far side of the fluid guide.

In particular embodiments, the barrier separating the inner longitudinal passage and the outer longitudinal passage may be an impervious partition, eg, fluid impermeable.

According to the present invention, an aerosol generating article is provided, the aerosol generating article comprising:

a fluid guide to enable movement of the fluid, the fluid guide having a proximal end and a distal end, the fluid guide having an inner longitudinal portion and an outer longitudinal portion separated by a partition, the inner longitudinal portion comprising an inner longitudinal passage between the distal end and proximal end, and the outer portion includes an outer longitudinal passage that communicates the outer fluid through at least one hole with the distal end of the fluid guide, whereby the outer fluid can move along the outer longitudinal passage to the distal end of the fluid guide ; And

a tubular element that contains a porous medium filled with gel, additionally containing the active substance; wherein the tubular member has a proximal end and a distal end and is spaced away from the fluid guide.

Preferably, the distal end of the tubular element, in some embodiments, includes at least one opening. The opening at the distal end of the tubular may allow a fluid, such as air from outside the aerosol generating article(s), to enter the tubular and move through the tubular to create an aerosol. Fluid moving through the tubular member may pick up the active agent or any other materials in the gel and carry them out of the gel in a downstream (proximal) direction.

In particular embodiments, the aerosol generating article may include a cavity located between the distal end of the fluid guide and the proximal end of the tubular. Thus, the cavity can be located at the upstream end of the internal longitudinal passage and the downstream end of the tubular element. The cavity allows a fluid, such as ambient air, to move through the outer longitudinal passage to the cavity and make contact with the gel in the tubular. The fluid in contact with the tubular may pass into and through the tubular before returning to the inner longitudinal passage and to the proximal end of the fluid guide and the proximal end of the aerosol generating article. When this fluid, such as ambient air, comes into contact with the gel, the fluid can pick up the active agent or any other material in the gel or tubular and guide it along the internal longitudinal passage downstream to the proximal end of the aerosol generating article. To be in contact with the gel, ambient air may pass through the tubular member, or pass through the gel, or pass over the surface of the gel, or through combinations thereof.

In particular embodiments, the aerosol generating article comprises a wrapper. The wrapper may be made from any suitable material, for example the wrapper may comprise paper. Preferably, the wrapper will have corresponding openings relative to the openings of the fluid guide. The corresponding openings of the fluid guide and the wrapper may result from the formation of openings after the product has been rolled up.

In particular embodiments, at least one opening is located in the outer passage of the fluid guide.

The presence of at least one outer-communicating hole located in the outer passage of the fluid guide provides a distance between the tubular element and at least one outer-communicating hole. This can help prevent leakage of the gel and its contents, as well as provide the desired retraction of the aerosol.

In specific embodiments, at least one opening is located in the cavity between the fluid guide and the tubular member.

Having at least one opening located in the outer passage of the fluid guide allows the surrounding fluid to easily reach the tubular and mix easily in the cavity between the tubular and the fluid guide.

In specific embodiments, the implementation of at least one hole is in the side wall of the tubular element.

The presence of at least one opening located in the side wall of the tubular element allows the surrounding fluid to move in essentially one direction when negative pressure is applied to the proximal end of the aerosol generating article. The presence of at least one hole located in the side wall of the tubular element allows the surrounding fluid to easily mix with the contents of the tubular element.

In particular embodiments, the outer longitudinal passage of the aerosol generating article comprises a single opening or a plurality of openings. The opening may be any opening, slot, slot, or passageway to allow a fluid, such as ambient air, to pass through and into the aerosol generating article. This allows the fluid outside of the aerosol generating article to be drawn inward. In use, this may be an external fluid, such as air, which is first drawn into the aerosol generating article through openings into the outer longitudinal passages before being drawn into other parts of the aerosol generating article. In specific embodiments, the holes are evenly spaced around the circumference of the aerosol generating article, for example, there are 10 or 12 holes. Having evenly spaced holes helps ensure smooth fluid flow.

Additionally or alternatively, holes may be present in the cavity wrap region located between the fluid guide and the tubular member. This will allow an easy and rapid flow of fluid, such as ambient air, to the tubular element.

In particular embodiments, in combination with other features, the aerosol generating article comprises openings in the wrapper at the location of the cavity between the fluid guide and the tubular member.

Additionally or alternatively, holes may be present in the side walls of the tubular element. The presence of openings in the side walls of the tubular element will allow a fluid, such as ambient air, to enter directly into the tubular element.

In embodiments with openings in any of the side walls of the tubular or wrapped around the cavity, the fluid guide may be of simple design and may have only one passage connecting the tubular to the proximal end of the aerosol generating article.

In combination with specific embodiments, the aerosol generating article comprises an end plug located at the distal end of the tubular element, and the end plug has a high draw resistance. The end plug may be fluid tight or may be nearly fluid tight. Preferably, the end plug is located at the extreme distal end of the aerosol generating article. Because the end plug has a high draw resistance, this will advantageously divert fluid to enter through the orifice of the outer longitudinal passages when negative pressure is applied at the proximal end of the aerosol generating article. In some embodiments, the end plug is fluid tight.

In some embodiments, the implementation of the tubular element contains an end plug. Advantageously, this ensures ease of manufacture. The end plug of the tubular element will preferably be located at one end of the tubular element. Advantageously, this ensures ease of manufacture. In some embodiments, the implementation of the tubular element contains an end plug, while the end plug is fluid tight. When the tubular includes an end plug that is fluid tight, this prevents gel and other fluids from escaping the tubular through the end plug of the tubular.

In particular embodiments, the inner longitudinal passage of the inner portion of the fluid guide comprises a stopper. In some embodiments, the restrictor is located at or near the proximal end of the fluid guide. In some embodiments, the restrictor is located at or near the downstream end of the fluid guide. However, the restrictor, if present, may be located in the middle portion of the inner longitudinal passage of the fluid guide or the outer longitudinal passage. The stopper may also be located near or on the distal end of the inner longitudinal passage. The restrictor may be located at or near the upstream end of the inner longitudinal passage. More than one restrictor may be used in the inner longitudinal passage or in the outer longitudinal passage of the fluid guide.

Restrictors for use with certain specific embodiments of the present invention comprise a sharp taper; as an opening in a surface such as a wall, or a gradual restriction. Alternatively, in other specific embodiments, the restraints comprise a gradual or gradual restriction, such as sloped walls, or a funnel-shaped narrowing towards the lumen, or a gradual stepped restriction across the entire width of the passage. There may be gradual or sudden expansion on the downstream (proximal) side of the restrictor. Particular embodiments comprise a funnel shape on one or both sides of the restrictor. Thus, in the fluid flow from the upstream to the downstream (far to proximal) side, there may be a gradual restriction of flow as the sides of the flow narrow towards the lumen of the restrictor, and then a gradual widening of the passage from the lumen of the restrictor. Typically, the restrictor clearance will be limited to 60 or 45 or 30 percent of the largest cross-sectional area of the passage. In the present invention, the restrictor thus may in some embodiments, for example, comprise a constriction with a clearance having a cross-sectional area of only 60 or 45 or 30 percent of the cross-sectional area of the largest or widest portion of the inner longitudinal passage. Typically, specific embodiments according to the present invention have a reduction in the diameter of the cross section of the cylindrical passages, for example, from 4 millimeters to 2.5 millimeters. By varying the different ratios of width reduction and width values, the location of the restrictors, the number of restrictors, and the degree of reduction and expansion ratio, a particular fluid flow characteristic can be achieved.

In combination with specific embodiments, the aerosol generating article includes a heating element, such as a current collector, whereby heat can be transferred to the gel in the tubular element. As well as the current collector (susceptor) of the tubular element, it can be made of any suitable material, preferably metal, such as, for example, aluminum, or containing aluminum.

According to the present invention, there is provided a method for manufacturing an aerosol generating article, the aerosol generating article comprising:

a fluid guide for enabling fluid transfer, the fluid guide having a proximal end and a distal end, the fluid guide having an inner longitudinal portion and an outer longitudinal portion separated by a partition, the inner longitudinal portion comprising an inner longitudinal passage between the distal end and proximal end, and the outer portion includes an outer longitudinal passage that communicates fluid through at least one opening with the distal end of the fluid guide, whereby fluid can move along the outer longitudinal passage of the outer fluid control portion toward the distal end of the guide for fluid;

a tubular element that contains a gel, and the gel contains an active substance, and the tubular element has a proximal end and a distal end; And

wherein the method includes the steps:

linear placement of the tubular member containing the gel, and the guide for the fluid medium on the canvas of the wrapping material; And

rolling up the tubular and the fluid guide; and sealing the wrapper securely around the tubular and the fluid guide.

According to the present invention, an aerosol generating device is provided, comprising a reservoir configured to receive the distal end of an aerosol generating article as described herein.

The reservoir of the device may be shaped and sized to allow the distal end or distal end portion of the aerosol generating article to slide into the reservoir and retain the aerosol generating product in the reservoir during normal use.

Typically, the tank contains a heating element. This will allow heating of an aerosol generating article, heating of a tubular, or heating of a gel, preferably containing an active agent, or heating of a porous gel-filled medium, or any combination thereof, directly or indirectly to assist in generating or releasing an aerosol or releasing a material into an aerosol. The aerosol may then pass to the proximal end of the aerosol generating article. In specific embodiments, the implementation of the heating is carried out directly or indirectly through a heater element, or a current collector (susceptor), or a combination of both.

The heating means may be any known heating means. Typically, the heating means may provide heating by radiation, or conduction, or convection, or a combination thereof.

In combination with specific embodiments, the tubular element further comprises a thread. In specific embodiments, the thread is made from natural materials or synthetic materials, or the thread is a combination of natural and synthetic materials. The thread may contain a semi-synthetic material. The thread may be made of fibers, or contain fibers, or partially contain fibers. The thread can be made, for example, of cotton, cellulose acetate or paper. A composite thread may be used. The thread may contribute to the manufacture of a tubular element containing the active substance. The thread can facilitate the introduction of the active substance into the tubular element containing the active substance. The thread can help stabilize the structure of the tubular element containing the active substance.

In combination with specific embodiments, the tubular element contains a porous medium filled with gel. The porous media can be used within the tubular to create space within the tubular. The porous medium is capable of containing or retaining the gel. This has the advantage of facilitating the transfer and storage of the gel and the manufacture of the tubular member containing the gel. The gel in the gel-filled porous medium may also contain an active agent; it may also contain or carry the active substance or other materials.

The porous medium may be any suitable porous material capable of containing or retaining a gel. Ideally, the porous medium may allow the gel to move within it. In particular embodiments, the gel-filled porous medium contains natural materials, synthetic or semi-synthetic materials, or a combination thereof. In particular embodiments, the gel-filled porous medium comprises sheet material, foam, or fibers, such as loose fibers, or a combination thereof. In particular embodiments, the gel-filled porous medium comprises a woven, non-woven, or extruded material, or combinations thereof. Preferably, the gel-filled porous medium contains, for example, cotton, paper, rayon, polylactic acid (PLA), or cellulose acetate, or combinations thereof. Preferably, the gel-filled porous medium contains a sheet material, such as cotton or cellulose acetate. Advantages of a gel-filled porous medium is that the gel is retained within the porous medium and this can facilitate the manufacture, storage, or transport of the gel. This may assist in maintaining the desired shape of the gel, especially during manufacture, transport or use. The porous medium used in the present invention may be corrugated or split. In specific embodiments, the implementation of the porous medium contains a corrugated porous medium. In alternative embodiments, the implementation of the porous medium contains a split porous medium. The shirring or splitting process may be carried out before or after the gel filling.

Cleavage provides a high surface area to volume ratio for a medium that is thus capable of readily absorbing the gel.

In particular embodiments, the sheet material is a composite material. Preferably the sheet material is porous. The sheet material may assist in the manufacture of a tubular member containing the gel. The sheet material can facilitate the introduction of the active substance into the tubular element containing the gel. The sheet material can help stabilize the structure of the tubular member containing the gel. The sheet material may assist in the transport or storage of the gel. The use of sheet material allows or provides for the addition of structure to the porous medium, for example by corrugating the sheet material. Corrugating the sheet material has the advantage of improving the design to provide passages through the structure. The passages through the corrugated sheeting assist in filling with gel, retaining the gel, and also for fluid to pass through the corrugated sheeting. Therefore, there are advantages to using corrugated sheeting as a porous medium.

The porous medium may be a thread. The thread may contain, for example, cotton, paper or acetate rod. The thread can also be filled with gel, like any other porous medium. The advantage of using filament as a porous medium is that it can facilitate easy fabrication. The filament may be pre-filled with gel prior to use in the manufacture of the tubular, or the filament may be filled with gel when the tubular is assembled.

The thread can be filled with gel by any known means. The thread may simply be coated with gel, or the thread may be impregnated with gel. During manufacture, the filaments may be impregnated with the gel and stored ready for use for inclusion in a tubular assembly. In other processes, the thread is subjected to a filling process in the manufacture of a tubular element filled with gel. Like a porous medium filled with a gel or a gel alone, preferably the gel contains an active substance. The active substance is as described herein.

In the manufacture of tubular elements, the gel or porous media or filament may be distributed simultaneously as the other components are distributed, or distributed sequentially. Preferably, the components are distributed, but the component may be assembled, or rolled up, or combined, or positioned in any known manner to be positioned in the desired location.

In the context of this document, the term "active substance" is a substance that is capable of being active, for example, it causes a chemical reaction or is capable of changing the generated aerosol. The active agent may be more than one agent.

In the context of this document, the term "aerosol generating article" is used to describe an article capable of generating or releasing an aerosol.

In the context of this document, the term "aerosol generating device" is a device to be used with an aerosol generating article to allow the generation or release of an aerosol.

In the context of this document, the term "aerosol generating agent" refers to any suitable known compound or mixture of compounds that, when used, improves the initial aerosol contained, for example, in a tubular element, which can become a denser aerosol, a more stable aerosol, or both more dense aerosol and more stable aerosol.

In the context of this document, the term "aerosol generating substance" is used to describe a substance capable of generating or releasing an aerosol.

In the context of this document, the term "hole" is used to describe any hole, slot, slot or gap.

In the context of this document, the term "cavity" is used to describe any pocket or space at least partially enclosed by the structure. For example, in the present invention, the cavity is a partially enclosed space (in some embodiments) between the fluid guide and the tubular member.

In the context of this document, the term "chamber" is used to describe at least partially enclosed spaces or cavities.

For purposes of the present invention, the inner longitudinal cross-sectional area that "tapers" from the first location to the second location is used to indicate that the diameter of the inner longitudinal cross-sectional area decreases from the first location to the second location. This is often referred to as a "limiter". Thus, in the context of this document, the term "limiter" is used to describe a narrowing of a fluid passage or a change in cross-sectional area in a fluid passage.

In the context of this document, the term "corrugated" means a material having many folds or corrugations. It also includes the process of making the material corrugated.

The expression "cross-sectional area" is used to describe the cross-sectional area measured in a plane transverse to the longitudinal direction.

For the purposes of the present invention, in the context of this document, the term "diameter" or "width" is the maximum transverse dimension of the tubular element, aerosol generating article, or aerosol generating device, part or compartment thereof, any of the tubular element, aerosol generating article, or an aerosol generating device. By way of example, "diameter" is the diameter of an object having a circular cross section, or the length of the diagonal width of an object having a rectangular cross section.

In the context of this document, the term "essential oil" is used to describe an oil having the characteristic odor and aroma of the plant from which it is derived.

In the context of this document, the term "outdoor fluid" is used to describe a fluid originating outside of an aerosol generating element, article, or device, such as ambient air.

The term "flavor" in the context of this document is used to describe a composition that affects the organoleptic quality of the aerosol.

The term "fluid guide" in the context of this document is used to describe a device or component that can change the flow of a fluid. Preferably, it leads or directs the fluid flow path of the generated or released aerosol. The fluid guide may cause mixing of the fluid. It may assist in accelerating the fluid as it moves through the fluid guide as the passage narrows in cross-sectional area, or it may assist in slowing down the fluid as it moves along the passage as the passage's cross-section widens.

As used herein, the term "assembled" is used to describe a sheet that is rolled, folded, or otherwise compressed or narrowed substantially transverse to the longitudinal axis of the aerosol generating article or tubular.

In the context of this document, the term "gel" is used to describe a solid jelly-like semi-rigid material or mixture of materials with a three-dimensional network capable of retaining other materials and capable of releasing materials into an aerosol.

The term "grass material" is used to refer to material from a herbaceous plant. An "herbaceous plant" is an aromatic plant wherein the leaves or other parts of the plant are used for medicinal, culinary or aromatic purposes and are capable of releasing a flavoring agent into an aerosol produced by an aerosol generating article.

The term "hydrophobic" in the context of this document refers to a surface that exhibits water-repellent properties. The hydrophobic property can be expressed using the contact angle of water. "Water contact angle" is the angle traditionally measured by a liquid where a fluid interface contacts a solid surface. In quantitative terms, it means the wettability of a solid surface by a liquid according to Young's equation.

In the context of this document, the term "impermeable" is used to describe an element, such as a baffle, through which the fluid essentially or easily does not pass.

In the context of this document, the term "induction heating" is used to describe the heating of an object by electromagnetic induction, where eddy currents (also known as Foucault currents) are generated within the object to be heated, and resistance leads to resistive heating of the object.

In the context of this document, the term "longitudinal passage" is used to describe a passage or lumen that allows fluid, etc. to flow along it. Typically, air or generated aerosols carrying materials, such as solid particles, flow along the longitudinal passage. Typically, the longitudinal passage will be longer in longitudinal length than in width, but need not be. The term "longitudinal passage" also contains several of more than one longitudinal passage.

The term "longitudinal" is used to describe the direction between the proximal and distal ends of a tubular member, aerosol generating article, or aerosol generating device.

In the context of this document, "longitudinal side portions", for example, of a second tubular element, are used to describe the longitudinal side portion or wall of the second tubular element. In some embodiments, the implementation is a single unit, for example, from cellulose acetate, forming a tubular element or a porous medium filled with gel. In alternative embodiments, the longitudinal side portion is a wrapper.

In the context of this document, the term "core" is used to describe a rod on which another material is forged or formed.

In the context of this document, the term "mint varieties" is used to refer to plants of the genus Mentha.

The term "mouthpiece" is used herein to describe the element, component, or part of an aerosol generating article through which the aerosol exits the aerosol generating article.

In the context of this document, the term "outer" with reference to the fluid guide is used to describe the portion that is closer to the longitudinal circumference of the fluid guide than the middle of the cross-sectional portion of the fluid guide. Similarly, the term "inner" is used to describe (with reference to the fluid guide) the portion of the fluid guide that is closer to the center of the cross-sectional portion than to the circumference of the fluid guide.

In the context of this document, the term "passage" is used to describe a passage that can allow access between elements.

In the context of this document, the term "plasticizer" is used to describe a substance, usually a solvent, added to provide or increase plasticity or flexibility and to reduce brittleness.

The term "porous medium" in the context of this document is used to describe any medium capable of containing, retaining or supporting a gel. Typically, a porous medium will have ducts within its structure that can be filled to retain or contain a fluid or semi-solids, such as to retain a gel. Preferably, the gel will also be able to pass or be transferred along and through the channels within the porous medium. In the context of this document, the term "gel-filled porous media" is used to describe a porous media that contains a gel. The gel-filled porous medium is capable of containing, retaining, or maintaining a certain amount of gel.

In the context of this document, the term "plug" is used to describe a component, segment, or element intended for use in an aerosol generating article. In the context of this document, the term "end plug" is used to describe the outermost component or plug of an aerosol generating article at the distal end of an aerosol generating article. Preferably this end plug will have a high resistance to draw (RTD).

The term "protonogenic" refers to a group that is capable of acting as a hydrogen or proton donor in a chemical reaction.

The term "reservoir" of the aerosol generating device is understood as follows: this term is used to describe the chamber of the aerosol generating device capable of containing a portion of the aerosol generating article. This is usually the far end of the product, but not necessarily.

In the context of this document, the term "resistance to draw" (RTD) is used to describe the resistance of a fluid, such as a gas, to be drawn through a material. In the context of this document, drag resistance is expressed in units of pressure “mm w.c. Art. " or "millimeters of water" and is measured in accordance with ISO 6565:2002.

In the context of this document, the term "high resistance to draw" (RTD) is used to describe the resistance of a fluid, such as a gas, to be drawn through a material. In the context of this document, high draw resistance means more than 200 mm w.c. Art. " or "millimeters of water" and is measured in accordance with ISO 6565:2002.

In the context of this document, the term "sheet material" is used to describe a generally planar plate element in which its width and length are substantially greater than its thickness.

In the context of this document, the term "seal" means to connect or "connect", for example, by connecting the edges of the wrap to each other or to the fluid guide. This can be done by using an adhesive or glue. However, the term "seal" also includes a connection by means of an interference fit. The seal does not require a fluid-tight seal or baffle.

In the context of this document, the term "split" is used to describe something that is finely chopped.

In the context of this document, the term "strong" is used to describe that an element is sufficiently rigid or strong enough to resist shape change, or strong enough to generally resist shape deformation during normal use. This includes that it can be resilient so that it can largely return to its original shape when deformed. Similarly, the term "rigid" in the context of this document describes that the element is resistant to bending or changing shape, generally able to maintain its shape, especially during normal use.

In the context of this document, the term current collector is used to describe a heating element, any material capable of absorbing electromagnetic energy and converting it into heat. For example, in the present invention, a current collector or heating element may assist in transferring thermal energy to the gel by heating the gel to assist in releasing materials from the gel.

As used herein, the term "textured sheet" means a sheet that has been corrugated, embossed, blind embossed, perforated, or otherwise deformed.

Throughout this document, the term "tubular member" is used to describe a component suitable for use in an aerosol generating article. Ideally, the tubular element may be longer in longitudinal length than in width, but need not be, as it may be one part of a multi-component element, which would ideally be greater in its longitudinal length than in its width. As a rule, the tubular element is cylindrical, but not necessarily. For example, the tubular element may have an oval, polygonal, eg triangular or rectangular, or arbitrary cross section. The tubular element need not be hollow.

The terms "upstream" and "downstream" are used to describe relative positions with respect to the main flow direction of the fluid as it is drawn into the tubular, aerosol generating article, or aerosol generating device. In some embodiments in which the fluid enters from the distal end of the aerosol generating article and moves towards the proximal end of the article, the distal end the aerosol generating article may also be described as the upstream end of the aerosol generating article and the proximal end of the aerosol generating article may also be described as the downstream end of the aerosol generating article. In these embodiments, the elements of the aerosol generating article located between the proximal end and the far end may be described as being upstream of the proximal end, or alternatively being downstream of the distal end. However, in other embodiments of the present invention in which the fluid enters the aerosol generating article from the side and first moves toward the distal end, turns, and then moves toward the proximal end of the aerosol generating article, the distal end of the aerosol generating article may be either upstream or downstream, depending on the respective reference point.

In the context of this document, the term "water resistant" is used to describe a material, such as a wrapper or a longitudinal side of the second tubular element, which does not allow water to easily pass through or which is not easily damaged by water. Waterproof material is able to resist water penetration.

In specific embodiments, the implementation of the tubular element contains the active substance. In specific embodiments, the implementation of the gel contains the active substance. In specific embodiments, the implementation of the active substance contains nicotine. In specific embodiments, the gel or tubular element containing the active agent contains from 0.2 weight percent to 5 weight percent of the active substance, for example, from 1 weight percent to 2 weight percent of the active substance.

Typically, in specific embodiments, the implementation of the tubular element will contain at least 150 mg of gel.

In specific embodiments, the implementation of the active substance contains a plasticizer.

In specific embodiments, the active agent-containing gel contains an aerosolizing agent such as glycerol. In embodiments in which an aerosolizing agent is present, typically, for example, the active agent-containing gel contains 60 percent to 95 weight percent glycerol, such as 80 percent to 90 weight percent glycerol.

In specific embodiments, the active agent-containing gel contains a gelling agent such as, for example, alginate, gellan, guar, or combinations thereof. In embodiments containing a gelling agent, the gel typically contains from 0.5 percent to 10 percent by weight of the gelling agent, for example, from 1 percent to 3 percent by weight of the gelling agent.

In specific embodiments, the implementation of the gel contains water. In such embodiments, the implementation of the gel typically contains from 5 percent to 25 percent by weight of water, for example, from 10 percent to 15 percent by weight of water.

In specific embodiments, the active agent comprises a flavoring agent or a pharmaceutical agent, or a combination thereof. In specific examples, the active substance is nicotine in any form. The active substance is capable of being active, for example capable of causing a chemical reaction or at least changing the generated aerosol.

The active agent may be a flavoring agent. In specific embodiments, the implementation of the active substance contains flavoring. The gel may contain a fragrance. Alternatively or additionally, flavors may be present at one or more other locations on the product. The flavoring agent may impart flavor to improve the taste of the fluid or aerosol generated by the article. A flavoring agent is any natural or artificial compound that affects the organoleptic quality of an aerosol. Plants that can be used to make flavorings include, but are not limited to, those belonging to the families Lamiaceae (e.g. mint varieties), Apiaceae (e.g. anise, fennel), Lauraceae (e.g. laurel varieties, cinnamon, rosewood) , Rutaceae (eg citrus fruits), Myrtaceae (eg anise, myrtle), and Fabaceae (eg licorice). Non-limiting examples of flavor sources include spearmints such as peppermint and spearmint, coffee, tea, cinnamon, cloves, ginger, cocoa, vanilla, eucalyptus, geranium, agave, and juniper; and their combinations.

Many fragrances are essential oils or a mixture of one or more essential oils. Suitable essential oils include, but are not limited to, eugenol, peppermint oil, and spearmint oil. In many embodiments, the flavoring contains menthol, eugenol, or a combination of menthol and eugenol. In many embodiments, the flavor further comprises anethole, linalool, or a combination thereof. In specific embodiments, flavorings comprise herbal material. Herbal material includes herbal leaf or other herbal material from herbaceous plants, including, but not limited to, spearmint varieties such as peppermint and spearmint, lemon balm, basil, cinnamon, lemon basil, chives, coriander, lavender, sage, tea, thyme and cumin. Suitable mint leaf species may be taken from a variety of plants including, but not limited to, Mentha piperita, Mentha arvensis, Mentha niliaca, Mentha citrata, Mentha spicata, Mentha spicata crispa, Mentha cordifolia, Mentha Longifolia, Mentha pulegium, Mentha suaveolens, and Mentha suaveolens variegata. In some embodiments, the flavor may include tobacco material.

In one specific example, in combination with other features, the gel contains approximately 2 weight percent nicotine, 70 weight percent glycerol, 27 weight percent water, and 1 weight percent agar. In another example, the gel contains 65 weight percent glycerol, 20 weight percent water, 14.3 weight percent tobacco solids, and 0.7 weight percent agar.

In the present invention, the fluid guide may have two distinct portions, for example, an outer portion with an outer longitudinal passage and an inner portion with an inner longitudinal passage. Therefore, the outer longitudinal passage extends lengthwise adjacent to the circumference of the fluid guide, and the internal fluid passage extends lengthwise adjacent the core or center of the cross section along a lengthwise axis.

Preferably, in particular embodiments, ambient air enters through openings in the wrapper and openings in the fluid guide into the outer longitudinal passage (fluid guide) toward the distal end of the aerosol generating article and into the region of the tubular member containing the gel containing the active agent. . Preferably, the fluid will contact the gel containing the active agent to generate or release an aerosol from a mixed fluid comprising fluid supplied from outside the aerosol generating article and material released from the gel containing the active agent or agents. The fluid then moves along the inner longitudinal passage of the fluid guide towards the proximal end of the aerosol generating article. It is assumed that the outer and inner longitudinal passages are separated by a partition. The septum may be fluid-tight or resistant to fluids passing through and thus capable of diverting fluid towards the distal end. Preferably, the outer longitudinal passage of the fluid guide comprises an opening that is in fluid communication with the outside of the fluid guide and preferably the outside of the product. It is also contemplated that the outer longitudinal passage is blocked at its proximal end, whereby, in use, fluid received from the outside of the aerosol generating article generally flows towards the distal end of the fluid guide. The outer longitudinal passage of the fluid guide has openings at or near its proximal end, but is then only open at its distal end. In contrast, the internal longitudinal passage of the fluid guide is open at both its proximal end and its distal end, although it may have different flow restriction features between its proximal and distal ends. The baffle separating the inner and outer longitudinal passages of the fluid guide forces the fluid that enters the outer longitudinal passage to move toward the distal end of the outer longitudinal passage and toward the tubular member, preferably containing a gel containing an active agent. This brings the fluid into contact with the tubular element, preferably containing a gel containing the active agent.

The outer longitudinal passage of the fluid guide may be a single passage or more than one passage. The outer longitudinal passage may be within the fluid guide or may be one or more passages on the outer surface of the fluid guide, the fluid guide forming a partial wall of the outer longitudinal passage and the wrap forming another partial wall relative to the outer longitudinal passage. The outer or inner longitudinal passage of the fluid guide may comprise a porous material, for example a foam, in particular a reticulated foam, whereby the passages extend transversely through the porous material. In particular embodiments, the fluid guide comprises a porous material, such as foam. The porous material may allow the passage of a fluid while still maintaining its shape. These materials are easy to form and hence can assist in the manufacture of an aerosol generating article.

In some embodiments, the outer longitudinal passage may extend substantially around the interior of the wrapper. In some embodiments, the passage may not extend completely around the interior of the wrapper.

Various aspects or embodiments of an aerosol generating product for use with an aerosol generating device as described herein may provide one or more advantages over currently available or previously described aerosol generating products. For example, an aerosol generating article comprising a fluid guide and inner and outer fluid passages of the fluid guide allows efficient transfer of an aerosol generated from a tubular member containing a gel, preferably containing an active agent. In addition, a gel containing an active agent is less likely to leak from an aerosol generating article than a liquid element containing an active agent.

An aerosol generating article may include a mouth end (proximal end); and far end. Preferably, the distal end is received by an aerosol generating device having a heating element configured to heat the distal end of the aerosol generating article. A tubular element containing a gel, preferably containing an active substance, is preferably placed near the distal end of the aerosol generating article. The aerosol generating device can therefore heat the tubular member containing the gel, preferably containing the active agent, in the aerosol generating article to generate an aerosol containing the active agent.

The aerosol-generating article or parts of the aerosol-generating article containing a tubular element, preferably containing a gel containing an active agent, may be disposable aerosol-generating articles or reusable aerosol-generating articles. In some specific embodiments, parts of the aerosol generating articles are reused and the parts are discarded after one use. For example, aerosol generating articles may include a mouthpiece that can be reused and a disposable part that contains a tubular element containing a gel and an active substance, for example additionally containing nicotine. In embodiments containing both reusable parts and disposable parts, the reusable parts can be detached from the disposable parts.

In combination with specific embodiments, the aerosol generating article comprises a wrapper. An aerosol generating article has an open end, a proximal end; and a distal end, which may be open or closed in various specific embodiments. A tubular element, preferably containing a gel containing an active substance, which optionally contains nicotine, is preferably placed near the distal end of the aerosol generating article. The application of negative pressure at the open proximal end causes material to be released from the tubular element, preferably containing an active agent-containing gel. The aerosol generating article defines at least one opening between the proximal end and the distal end. At least one opening defines at least one fluid inlet, whereby, when negative pressure is applied at the open proximal end of the aerosol generating article, fluid, such as air, enters the aerosol generating article through the opening. Preferably, fluid, such as ambient air, is drawn into the aerosol generating article through the opening, flows along the outer longitudinal passage of the fluid guide to a tubular member, preferably containing an active agent-containing gel, near the distal end of the aerosol generating article. The fluid then flows through the inner longitudinal passage of the fluid guide from the distal end to the proximal end and out of the aerosol generating article at the open proximal end.

By positioning the opening at a distance from the distal end of the aerosol generating article, the opening is separated from the tubular member containing the gel, which reduces the possibility of gel leakage through the opening. In addition, by providing a passage, such as an external longitudinal passage, for air flow from the opening into the tubular member containing the gel, the fluid from the opening can be directed towards the gel, and the fluid guide can act as an additional obstruction between the gel and the opening. This has the advantage of further reducing the likelihood of the tubular element leaking through the opening. Additionally, the internal longitudinal passage of the fluid guide provides a path for fluid, such as air, and material or vapor generated or released from the tubular to be drawn out of the aerosol generating article through the open proximal end. The path provided by the internal longitudinal passage of the fluid guide may have an internal longitudinal flow cross-sectional area that varies along the length of the internal longitudinal passage to vary the flow of aerosol generated or released from the tubular from the distal end of the aerosol generating article to the open proximal end. the end of the aerosol-generating article.

In combination with specific embodiments, the aerosol generating article comprises a fluid guide. The aerosol generating article and the fluid guide, or parts thereof, may be formed as a single part or separate parts. An advantage of the fluid guide and the aerosol generating article integrally formed as one single piece is the ease of manufacturing only one piece, instead of several parts, and then subsequently assembling these several parts inside the aerosol generating article. However, if the aerosol generating article is of a multi-component design that requires several components to be assembled together, this has the advantage that different components can be more easily changed without having to change the entire manufacturing process. Likewise, the fluid guide may be formed as a single piece or separate parts for the same reasons - ease of fabrication, if manufactured in one piece, but may be easier to adapt, if the components of the fluid guide are assembled. . The fluid guide is housed in the aerosol generating article and has a proximal end, a distal end, and an internal longitudinal passage between the distal end and the proximal end.

The inner longitudinal passage of the fluid guide has an internal cross-sectional area.

Providing gaps or passages that are at an angle with respect to the longitudinal direction of the aerosol generating article has the effect that, during use, fluid is directed into the proximal end cavity at an angle to the main fluid flow. This advantageously optimizes fluid mixing and creates drag resistance (RTD). Mixing may also increase the turbulence of the flow of generated aerosol and air through the proximal end cavity. These effects on the dynamics of the main flow of the generated aerosol can enhance the benefits described above. By changing the dynamics of the openings or passage, for example by making the passage smaller or larger in cross-sectional area, or by changing the wall angles of the passage, or a combination thereof, the desired draw resistance can be achieved. Such passages, especially when there is a constriction of the passage, are known as restrictors or flow restriction elements. According to the present invention, either or both of the outer and inner longitudinal passages may have a restrictor, however, preferably only the inner longitudinal passage contains a restrictor. To facilitate the description below, when describing the various embodiments, and therefore as a result of the direction of fluid flow and the orientation of the passage, only the inner longitudinal passage is described. However, the restrictor can equally be used in the outer longitudinal passage according to the present invention, where the flow of the fluid generally has a direction opposite to the inner longitudinal path for the fluid flow. The common path for flow in the outer longitudinal passage is from the proximal end to the distal end, while in the inner longitudinal passage the general direction of flow in use is from the distal end to the proximal end. The vented fluid passing through the openings enters the aerosol generating article and flows in a distal direction along the outer longitudinal passage. The fluid contacts the tubular element, preferably containing a gel containing the active agent, and preferably generates or releases an aerosol containing the active agent or other contents of the tubular element.

Restrictors have been provided in smoking and aerosol generating products to compensate for low RTD (resistance to draw). The restrictors can, for example, be built into a plug or a tube of filter material. Additionally, filter segments containing a restrictor may be combined with other filter segments, which may optionally contain other additives such as sorbents or flavors.

Preferably, with regard to the cross-sectional area of the restrictor, each passage runs either along the radius of the cross-sectional area, or along a line that is offset from the radius by an angle beta (β). "Radius" refers to any line extending from the center of the cross-sectional area to the edge of the cross-sectional area. Angle beta (β) is measured as the smallest angle between the point of intersection of the radius and the central axis of the passage. In case the passage is not straight, the angle can be measured between the longitudinal axis of the filter and the longitudinal axis of the exit from the passage.

When considering the cross-sectional area from a downstream direction (distal to proximal end for an internal longitudinal passage), angle beta (β) can be directed in a clockwise or counter-clockwise direction with respect to the radius.

If the passage is offset from the radius, the angle beta (β) is preferably less than 60 degrees, more preferably less than 45 degrees, and most preferably less than 15 degrees in either a clockwise or counterclockwise direction. The mixing of any fluid generated from the article and the fluid supplied as a result of ventilation can be improved if the angle beta (β) is offset from the radius. In some cases, all of the passages may be directed in a clockwise direction or in a counterclockwise direction, or some of the passages may be directed in a clockwise direction and some of them may be directed in a counterclockwise direction.

The size of the openings or passages in the fluid guide preferably provides a total open area of 1.0 square millimeters to 4.0 square millimeters (mm ² ), more preferably 1.5 square millimeters to 3.5 square millimeters (mm ² ). Preferably, the lumen or passageways of the inner longitudinal passage of the fluid guide are substantially circular, although other cross-sectional shapes are also possible. The advantage of the inner longitudinal passage of the fluid guide having a circular cross section is that a more uniform flow of fluid through the passages of non-circular cross section is possible. Changing the shape of the passages makes it possible to achieve the desired flow.

A single lumen or passage may be provided in the fluid guide. Alternatively, two or more spaced apart openings or passageways may be provided in the fluid guide. For example, in some embodiments, a pair of substantially opposite passages is provided. Having more than one passage is advantageous to enable improved control of fluid flow through the passages. Having a single pass is advantageous for ease of manufacture.

With regard to the inner and outer longitudinal passages, if there are two or more openings or passages, the openings or passages may have the same open area or different open areas. Having equal open area for two or more passages, all of which have the same area, is advantageous in order to ensure uniform fluid flow through all passages. However, having two or more passages with different open areas is advantageous for creating turbulence in the fluid as it passes through the two or more passages.

Two or more passes may be provided at the same angle or at different angles to the longitudinal axis. Having two or more passages at the same angle to the longitudinal axis is advantageous in order to ensure uniform fluid flow through all passages. In general, uniform fluid flow is easier to predict and plan for. Having two or more passages at different angles to the longitudinal axis is advantageous for creating turbulence in the fluid as it passes through the two or more passages. In general, turbulent airflow can improve particle agglomeration to form aerosol droplets.

The two or more passages may be provided at the same angle or at different angles to the cross-sectional radius of the fluid guide. Having two or more passages at the same angle to the cross-sectional radius of the fluid guide areas is advantageous in order to ensure uniform fluid flow through all passages. Having two or more passages at different angles to the cross-sectional radius of the fluid guide is advantageous in creating turbulence in the fluid as it passes through the two or more passages.

With regard to the inner and outer longitudinal passages, if there are two or more passages, the passages may be located at substantially the same position along the length of the fluid guide, or at different longitudinal positions relative to each other. Having two or more passages at the same position along the length of the fluid guide is advantageous in order to ensure uniform fluid flow through all passages. Having two or more passages at different longitudinal positions relative to one another is advantageous for creating turbulence in the fluid as it passes through the two or more passages.

In embodiments where the holes are provided upstream of the cavity, the outer longitudinal passage between the holes and the cavity allows fluid from the outside of the aerosol generating article to pass into the cavity and tubular beyond the cavity in the far direction. The cavity may be partially enclosed by a wrapper of the aerosol generating article. In such embodiments, mixing of a fluid, such as ambient air, with the generated or released aerosol may occur, or may partially occur, before the aerosol passes through the restrictor.

If the fluid guide comprises two or more restrictors whose cross-sectional area is of different size, preferably the first upstream restrictor has the smallest cross-sectional area. Preferably, the first stop has a reduced outer diameter compared to the overall diameter of the inner longitudinal passage to form an annular passage between the distal side and the proximal side.

In particular embodiments, the restrictor is substantially spherical. However, alternative forms are also possible. The restrictive element may, for example, be substantially cylindrical or be provided in the form of a membrane. For example, the restrictor may be provided in the form of a membrane extending in a plane perpendicular to the longitudinal axis of the article.

In alternative designs, the restrictor may be a collection of smaller particles (eg, granules held together by a binder).

In combination with specific embodiments, the cross-sectional area of the internal longitudinal passage of the fluid guide is substantially constant from the distal end to the proximal end. This ensures smooth fluid flow. The inner diameter of the inner longitudinal passage of the fluid guide is typically in the range of 1 millimeter to 5 millimeters, typically about 2 millimeters. The internal longitudinal passage typically has an internal longitudinal cross-sectional area that is smaller than the cross-sectional area of the cavity at the distal end of the fluid guide. Thus, the fluid guide presents a narrowed inner longitudinal cross-sectional area to accelerate air entering the inner longitudinal passage at the distal end.

In combination with specific embodiments, the cross-sectional area of the inner longitudinal passage varies from the distal end to the proximal end. This forces the fluid to mix. For example, the cross-sectional area at the distal end of the inner longitudinal passage may be larger than the cross-sectional area at the proximal end of the inner longitudinal passage. If the cross-sectional area of the inner longitudinal passage is larger at the distal end than at the proximal end, the diameter of the inner longitudinal passage at the proximal end is preferably 0.5 millimeter to 3 millimeters, for example about 1 millimeter, and the diameter of the inner longitudinal passage at the distal end is preferably from 1 millimeter to 5 millimeters, for example about 2 millimeters.

In combination with specific embodiments, the fluid guide is preferably 3 millimeters to 50 millimeters in length, preferably about 25 millimeters in length.

In combination with other features, in particular embodiments, the inner longitudinal passage of the fluid guide may have one or more parts located between the distal end and the proximal end, which are adapted to change the flow of fluid through the internal longitudinal passage from the distal end to the proximal end.

The inner longitudinal passage of the fluid guide may include a first portion between the proximal end and the distal end that is configured to accelerate fluid as it flows from the distal end to the proximal end of the fluid guide. The first portion of the internal longitudinal passage may be configured in any suitable manner to accelerate the fluid as it flows through the internal longitudinal passage from the distal end to the proximal end of the internal longitudinal passage. For example, the first portion of the internal longitudinal passage may include restraints defining a narrowed internal longitudinal cross-sectional area that forces the fluid to accelerate in a substantially axial direction from the distal end to the proximal end. Preferably, the first part of the inner longitudinal passage is the first part of the inner longitudinal passage in the distal to proximal direction.

In combination with specific embodiments, the inner longitudinal cross-sectional area of the first portion of the inner longitudinal passage may taper from a location closer to the distal end of the fluid guide to a location closer to the proximal end of the fluid guide to cause the fluid to accelerate along as it flows from the far end to the near end. The inner longitudinal cross-sectional area of the first part may taper from the distal end of the first part to the proximal end of the first part. Thus, the distal end of the first portion of the inner longitudinal passage (the location closer to the distal end of the fluid guide) may have an inner diameter that is larger than the proximal end of the first portion (the location closer to the proximal end of the fluid guide).

In combination with specific embodiments, the internal longitudinal cross-sectional area of the first part of the internal longitudinal passage may be constant from the distal end of the first part to the proximal end of the first part. In such embodiments, the constant internal longitudinal cross-sectional area of the first portion of the internal longitudinal passage may be less than the internal longitudinal cross-sectional area at the distal end of the internal longitudinal passage.

If the internal longitudinal passage of the fluid guide narrows from the distal end to the proximal end, the narrowing of the internal longitudinal passage generally includes a gradual decrease in the cross-sectional area of the internal longitudinal passage from the distal end to the proximal end of the fluid guide. Preferably, the decrease in the diameter of the inner longitudinal passage is linear from the distal end to the proximal end of the first part, for example, has the shape of a truncated cone. A linear reduction in cross-sectional area, for example in the form of a truncated cone, is advantageous in creating a smooth flow of fluid through the fluid guide.

Alternatively, the constriction is non-uniform. For example, in particular embodiments, the narrowing of the inner longitudinal passage is stepped, with the cross-sectional area of the inner longitudinal passage narrowing in increments or steps from the distal end to the proximal end. The non-uniform reduction in cross-sectional area of the inner longitudinal passage is advantageous in creating turbulence in the fluid as it passes along the fluid guide.

The inner longitudinal passage of the fluid guide may include a second portion between the proximal end and the distal end that is configured to slow fluid as it flows from the distal end to the proximal end of the fluid guide. The second portion of the internal longitudinal passage may be configured in any suitable manner to slow down the fluid as it flows through the internal longitudinal passage from the distal end to the proximal end of the internal longitudinal passage. For example, the first portion of the internal longitudinal passage may include guides defining an expanded internal longitudinal cross-sectional area that forces the fluid to slow down in a substantially axial direction from the distal end to the proximal end. Preferably, the second part of the inner longitudinal passage is after the first part in the direction from far to near.

In combination with specific embodiments, the inner longitudinal cross-sectional area of the first portion of the inner longitudinal passage may expand from a location closer to the distal end of the fluid guide to a location closer to the proximal end of the fluid guide to cause the fluid to decelerate along as it flows from the far end to the near end. The inner longitudinal cross-sectional area of the first part may expand from the distal end of the second part to the proximal end of the second part of the fluid guide. Thus, the distal end of the second portion of the inner longitudinal passage (the location closer to the distal end of the fluid guide) may have an inner diameter that is smaller than the proximal end of the second portion (the location closer to the proximal end of the fluid guide).

In combination with specific embodiments, the cross-sectional area of the second portion of the inner longitudinal passage may be constant from the distal end of the second portion to the proximal end of the second portion. In such embodiments, the area representing the constant cross-sectional area of the second portion of the inner longitudinal passage may be greater than the area representing the cross-sectional area at the distal end of the second portion of the inner longitudinal passage.

If the cross-sectional area of the internal longitudinal passage of the fluid guide expands from the distal end to the proximal end, the expansion of the cross-sectional area of the internal longitudinal passage generally includes a gradual expansion of the cross-sectional area of the internal longitudinal passage from the distal end of the second portion to the proximal end of the fluid guide environment. Preferably, the expansion of the diameter of the inner longitudinal passage may be linear from the distal end to the proximal end of the second part, for example, be in the form of a truncated cone. A linear reduction in cross-sectional area, for example in the form of a truncated cone, is advantageous in creating a smooth flow of fluid through the fluid guide.

Alternatively, the constriction is non-uniform. For example, in particular embodiments, the expansion of the inner longitudinal passage is stepped, with the cross-sectional area of the inner longitudinal passage narrowing in increments or steps from the distal end to the proximal end. The non-uniform reduction in cross-sectional area of the inner longitudinal passage is advantageous in creating turbulence in the fluid as it passes along the fluid guide.

The diameter of the proximal end of the inner longitudinal passage is typically between 0.5 mm and 3 mm, for example 0.8 mm, 1 mm or preferably 1.2 mm.

The diameter of the distal end of the inner longitudinal passage is typically between 1 mm and 5 mm, for example 1.2 mm, 2 mm or preferably 2.2 mm.

The ratio of the diameter of the proximal end of the inner longitudinal passage to the diameter of the distal end of the inner longitudinal passage is generally 1:4 to 3:4, or 2:5 to 3:5, or preferably 1:2.

The distance between the proximal end and the distal end of the inner longitudinal passage may be any suitable distance. For example, the length of the inner longitudinal passage is typically 3 mm to 15 mm, for example 4 mm to 7 mm, or preferably 5.2 mm to 5.8 mm.

In particular embodiments according to the present invention, the fluid guide may be modular, comprising two or more segments that form the fluid guide.

In combination with specific embodiments, the aerosol generating article comprises at least one outer longitudinal passage in communication with the opening of the wrapper. In combination with specific embodiments, the passageway is formed at least in part by a wrapper, if a wrapper is present. The passage directs fluid (eg, ambient air) from the opening to the tubular element containing the active agent. In particular embodiments, an outer longitudinal passage is formed in the outer portion of the fluid guide under the inner surface of the wrap.

An aerosol generating article may comprise more than one outer longitudinal passage. In particular embodiments, the aerosol generating article comprises 2 to 20 outer longitudinal passages in the outer portion of the fluid guide. For example, the product may contain from 6 to 14 outer longitudinal passages, typically 10 to 12 passages. A different number of passes provides different dynamics of the aerosol flow.

Preferably, each outer longitudinal passage is in communication with at least one opening through the wrapper. However, the aerosol generating article may include one or more external longitudinal passages that are not in direct communication with the opening. Preferably, each outer longitudinal passage is in communication with at least one opening through the outer wall of the fluid guide. If present, preferably the opening through the wrapper and the opening through the outer wall of the fluid guide are aligned with each other and with at least one outer longitudinal passage to allow efficient flow of fluid into the aerosol generating article and along the outer longitudinal passage towards the distal end of the article, generating aerosol.

Preferably, the outer longitudinal passage and the wrapper comprise more than one opening. For example, in combination with specific embodiments, the outer longitudinal passage and the wrapper comprise from 2 to 20 holes. Preferably, the number of holes is equal to the number of outer longitudinal passages, and each hole corresponds to a separate outer longitudinal passage. Preferably, the holes are evenly spaced, placed circumferentially around the article to promote even distribution of the fluid.

In combination with specific embodiments, the side walls of the outer longitudinal passageway extend between the outside of the fluid guide and the inside of the wrap along at least a portion of the longitudinal length of the aerosol generating article. For example, in particular embodiments, the fluid guide has longitudinal grooves which, when present with the wrapper, form outer longitudinal passages.

In combination with specific embodiments, the outer longitudinal passages extend completely around the inside of the wrapper. Alternatively, the outer longitudinal passage does not extend completely around the circumference of the fluid guide, such as less than 90 percent around the circumference of the fluid guide, less than 70 percent around the circumference of the fluid guide, or less than 50 percent around the circumference of the fluid guide. environment. In particular embodiments, the outer longitudinal passage extends at least 5 percent around the circumference of the fluid guide.

In combination with specific embodiments, the distal end of the outer longitudinal passage is spaced from the distal end of the aerosol generating article. Alternatively, in other specific embodiments, the distal end of the outer longitudinal passage is comparable to the distal end of the fluid guide. In combination with specific embodiments, the distal end of the outer longitudinal passage may be 2 millimeters to 20 millimeters from the distal end of the aerosol generating article, such as 10 millimeters to 12 millimeters from the distal end of the article, generating aerosol.

In combination with specific embodiments, the width of the outer longitudinal passages is, for example, from 0.5 millimeters to 2 millimeters, typically from 0.75 millimeters to 1.8 millimeters.

The distal end of the longitudinal passages may be located at a distance from the distal end of the aerosol generating article, whereby the fluid that enters the opening of the outer longitudinal passages may contact the tubular member and cause the aerosol to be generated or released from the gel. The aerosol generated or released in the tubular member may pass through the inner longitudinal passage of the fluid guide to the proximal end of the aerosol generating article.

Preferably, at least 5 percent of the fluid that flows through the aerosol generating article contacts the tubular member and the gel, preferably containing the active agent. More preferably, at least 25 percent of the air that flows through the article contacts the tubular member containing the active agent.

In particular embodiments, not all of the fluid will be in contact with the tubular, for example, at least 5 percent of the fluid that flows through the aerosol generating article will not be in contact with the tubular, although in other specific embodiments this may be at least 10 percent of the fluid that flows through the aerosol generating article.

In combination with specific embodiments, the distal end of the fluid guide is spaced from the distal end of the aerosol generating article. In combination with particular embodiments, the distal end of the fluid guide may be 2 millimeters to 20 millimeters from the distal end of the aerosol generating article, e.g., 7 millimeters to 17 millimeters from the distal end of the aerosol generating article, preferably from 12 mm to 16 mm.

Preferably, the aerosol generating article is generally cylindrical. This easily provides a smooth flow of aerosol. The aerosol generating article may have an outer diameter of, for example, 4 millimeters to 15 millimeters, 5 millimeters to 10 millimeters, or 6 millimeters to 8 millimeters. The aerosol generating article may have a length of, for example, 10 millimeters to 60 millimeters, 15 millimeters to 50 millimeters, or 20 millimeters to 45 millimeters.

The resistance to draw (RTD) of an aerosol generating article will vary depending on, among other things, the length and dimensions of the passages, the size of the openings, the dimensions of the narrowest cross-sectional area of the internal passage, and the materials used. In specific embodiments, the RTD of the aerosol generating article is 50 millimeters of water (mm H ₂ O) to 140 millimeters of water (mm H ₂ O), 60 millimeters of water (mm H ₂ O) to 120 millimeters of water (mm H ₂ O) or from 80 millimeters of water column (mm H ₂ O) to 100 millimeters of water column (mm H ₂ O). The RTD of an article refers to the static pressure difference between one or more orifices and the mouth end of the article when passing through the internal longitudinal passage, under steady state conditions, in which the volume flow is 17.5 milliliters per second at the mouth end. The RTD of a sample can be measured using the method described in ISO 6565:2002.

Preferably, the aerosol generating articles of the present invention comprise an opening at a location along the outer longitudinal passage. Thus, the orifice is at a location upstream of the restrictor. In particular embodiments, the opening will be provided as a row or rows of holes through the wrap or fluid guide, or both the fluid guide and the wrap, and will allow fluid to be drawn into the aerosol generating article. The fluid is first drawn through the holes, then the outer longitudinal passage(s), then to the distal end of the aerosol generating article, where the fluid may contact the tubular and preferably the gel within the tubular, preferably the gel containing the active agent, before passing along the inner longitudinal passage and through the restrictor, if present in this embodiment. Preferably, the total internal fluid path from the orifice to the proximal end of the aerosol generating article is at least 9 millimeters. More preferably at least 10 millimeters in order to ensure optimal aerosol formation with respect to, among other things, draw resistance and cooling effect.

By adjusting the number and size of the holes, it is possible to tailor the amount of fluid admitted into the aerosol generating article upon retraction. For example, one or two rows of holes may be formed through the wrapper to allow a simple flow of fluid into the aerosol generating article. In alternative specific embodiments, the implementation of the wrap contains a smaller number of holes, for example, 2 or 4. The number of holes and the size of the holes will affect the flow of fluid into the aerosol generating article. Different combinations of drag resistance (RTD) and fluid flow into an aerosol generating article can result in different aerosol generations and hence the aerosol generating articles of the present invention offer a wider range of design options.

In specific embodiments, the aerosol generating article comprises a plastic material, a metal material, a cellulosic material such as cellulose acetate, paper, cardboard, cotton, or combinations thereof.

In particular embodiments, the fluid guide comprises a plastic material, a metal material, a cellulosic material such as cellulose acetate, paper, cardboard, or combinations thereof.

In combination with specific embodiments, the wrapper contains more than one material. In specific embodiments, the implementation of the wrapper or part of it contains a metal material, plastic material, cardboard, paper, cotton, or combinations thereof. When the wrapper contains cardboard or paper, the holes may be formed by laser cuts.

The wrapper provides strength and structural rigidity to the aerosol generating article. When paper or paperboard is used for wrapping and a high degree of strength is desired, they preferably have a density greater than 60 grams per square meter. One such wrapper can provide high structural rigidity. The wrapper may be resistant to deformation on the outside of the aerosol generating article at a location where the restrictor, if present, is embedded within the aerosol generating article, or at other locations, such as in cavities (if present), where there is less structural support. In some embodiments, the implementation of the tubular element wrap contains a metal layer. The metal layer can be used to concentrate externally applied energy to heat the tubular, for example, the metal layer can act as a current collector for an electromagnetic field, or to collect radiant energy supplied by an external heat source. With an internal heat source, the metal layer can prevent heat from escaping from the tubular through the wrapper, thereby increasing the heating efficiency. This may also provide a uniform distribution of heat along the periphery of the tubular.

In particular embodiments, the aerosol generating article comprises a seal between the outside of the fluid guide and the inside of the wrapper. The wrapper can then be securely attached to the fluid guide. This does not require a fluid-tight seal.

In particular embodiments, the aerosol generating article comprises a mouthpiece. The mouthpiece may comprise a fluid guide, or a portion thereof, and may form at least the proximal portion of the wrapper of the aerosol generating article. The mouthpiece may be connected to the wrap or back of the wrap in any suitable manner, such as by an interference fit, threaded engagement, or the like. the length of the rim paper, if any. In other embodiments, the mouthpiece may be defined as the portion of the article extending 40 millimeters from the mouth end of the aerosol generating article, or extending 30 millimeters from the mouth end of the aerosol generating article.

The tubular member, preferably containing a gel containing an active agent, may be placed in the aerosol generating article near the distal end prior to final assembly of the aerosol generating article.

Once fully assembled, the aerosol generating article defines a fluid path through which the fluid can flow. When negative pressure is provided at the mouth end (proximal end) of the aerosol-generating article, fluid enters the aerosol-generating article through an opening in the wrap (or fluid guide, or both), then flows through the outer longitudinal passage to the distal the end of the aerosol-generating article. There it can capture an aerosol, optionally generated by heating the tubular element containing the active agent. Fluid with the trapped aerosol can then flow through the internal longitudinal passage of the fluid guide and through the open mouth end of the aerosol generating article.

Preferably, the aerosol generating article is configured to be received by the aerosol generating device, whereby the heating element of the aerosol generating device can heat the section of the aerosol generating article that contains the tubular member. For example, the tubular member may be the distal end of the aerosol generating article if the tubular member, preferably containing a gel containing the active agent, is placed at or near the distal end of the aerosol generating article.

Preferably, the aerosol generating article may be shaped and sized for use with an appropriately shaped and sized aerosol generating device, comprising a reservoir to receive the aerosol generating article and a heating element configured and positioned to heat a section of the aerosol generating article. an aerosol that contains a tubular element, preferably containing a gel containing the active substance.

The aerosol generating device preferably includes control electronics operatively associated with the heating element. The control electronics may be configured to control the heating of the heating element. The control electronics may be located inside the casing of the device.

The control electronics may be provided in any suitable form and may, for example, comprise a controller or a memory and a controller. The controller may comprise one or more of an application specific integrated circuit (ASIC) state machine, a digital signal processor, a gate array, a microprocessor, or an equivalent discrete or integrated logic circuit. The control electronics may include a memory that contains instructions that cause one or more circuit components to perform a function or aspect of the control electronics. The functions inherent in the control electronics of the present invention may be implemented as one or more of software, firmware, and hardware.

The electronic circuit may include a microprocessor, which may be a programmable microprocessor. The electronic circuitry may be configured to control the power supply to the heating element. Power may be supplied to the heating element in the form of electrical current pulses. The control electronics may be configured to monitor the electrical resistance of the heating element and to control the energization of the heating element depending on the electrical resistance of the heating element. In this way, the control electronics can control the temperature of the resistive element.

The aerosol generating device may include a temperature sensor, such as a thermocouple, operatively coupled to control electronics to control the temperature of the heating elements. The temperature sensor may be located in any suitable location. For example, the temperature sensor may be in contact with or near a heating element. The sensor can send signals regarding the measured temperature to the control electronics, which can regulate the heating of the heating element to achieve a suitable temperature at the sensor.

Whether or not the aerosol generating device includes a temperature sensor, the device can be configured to heat a tubular member, preferably containing a gel containing an active agent, housed in the aerosol generating article to a level sufficient to generate an aerosol.

The control electronics may be operatively coupled to a power supply, which may be located within the housing. The aerosol generating device may comprise any suitable power supply. For example, the power supply of the aerosol generating device may be a battery or battery pack. The batteries or power supply may be rechargeable or removable or replaceable.

In combination with specific embodiments, the heating element comprises a resistive heating component, such as one or more resistive wires or other resistive elements. The resistance wires may be in contact with the thermally conductive material to distribute the heat produced over a wider area. Examples of suitable conductive materials include gold, aluminum, copper, zinc, nickel, silver, and combinations thereof. Preferably, if the resistance wires are in contact with the thermally conductive material, both the resistance wires and the thermally conductive material are part of the heating element.

In combination with specific embodiments, the heating element includes a cavity configured to receive and surround the distal end of the article. The heating element may include an elongated element configured to extend along the side of the casing of the article when the distal end of the article is received by the device.

As an alternative to inserting a heating element into the aerosol generating article, heat can be applied outside the tubular element by means of a heating sheath that is thermally coupled to the circumference of the wrapper of the aerosol generating article. Preferably, the sheath is in the part of the aerosol generating article that contains the tubular element.

In other specific embodiments, the implementation of the heating element provides for induction heating.

In specific embodiments, the implementation of the tubular element, preferably containing a gel, preferably containing an active agent, is heated by induction heating.

Preferably, the part of the aerosol generating article containing the tubular element is located in the aerosol generating device, whereby the heating element or heating elements that generate electromagnetic radiation for induction heating are located near the part of the aerosol generating article that contains the tubular element. Thus, preferably, the heating elements of the aerosol generating device are in proximity to the gel within the aerosol generating article when located in the aerosol generating device.

Preferably, in embodiments for use with induction heating, the aerosol generating article comprises a current collector. Preferably, in embodiments for use with induction heating, the tubular member comprises a current collector. Further preferably, in specific embodiments, the implementation of the gel contains a current collector. Preferably, the current collector is in contact with or near the gel. In such embodiments according to the present invention, therefore, when the current collector is heated by radiation, heat transfer to the gel can easily occur, which promotes the release of material from the gel, for example, the active substance.

Additionally or alternatively in combination with other features according to the present invention, the gel-filled porous medium comprises a current collector. Thus, the current collector can be in contact with the gel-filled porous medium and allows the gel-filled porous medium to be easily heated.

In particular embodiments, the implementation of the gel within the tubular element may initially be separated from the aerosol contained in the tubular element, and can be released to be captured by the aerosol in response to rupture of the fragile septum. Optionally, in particular embodiments, each of the plurality of gel portions may be sealed behind a respective frangible septum and a proper number of frangible septa need to be ruptured to achieve the desired level of active agent entrainment in the tubular aerosol upon use.

In combination with specific embodiments, the aerosol generating device may be configured to accommodate more than one aerosol generating article described herein. For example, an aerosol generating device may include a reservoir into which an elongated heating element extends. One aerosol generating article may be placed in a reservoir on one side of the heating element and another aerosol generating article may be placed in a reservoir on the other side of the heating element. Or, in other specific embodiments, the aerosol generating device comprises more than one receiving device. Thus, more than one aerosol generating article can be accommodated at a time.

In combination with specific embodiments according to the present invention, the wrap or part of the wrap is water resistant or hydrophobic, which has the property of having some degree of water impermeability or moisture penetration resistance. This may be a tubular wrapper, or a wrapper for an aerosol generating article, or a wrapper for both the tubular element and the aerosol generating article. It may also be a wrap for any other part of the aerosol generating article or any other component of the aerosol generating article, including the longitudinal side portions of the second tubular within the first tubular. The wrapper may be naturally impermeable and thus resistant to water or moisture penetration. The wrapper may be multi-layered, having a septum which prevents or reduces the flow of water or is at least resistant to water or moisture penetration. In combination with specific embodiments, a hydrophobic septum or hydrophobic treatment of the wrapper can be performed over the entire area of the wrapper. Alternatively, in other specific embodiments, the hydrophobic septum or wrap treatment refers to a part of the wrap, for example, it can be provided on one side of the wrap: either the inside or the outside of the wrap; or processing can be done on both sides of the wrapper.

The hydrophobic portion of the wrapper can be obtained by a process comprising the steps of: applying a liquid composition containing a fatty acid halide to at least one surface of the wrapper and maintaining the surface temperature at 120 degrees Celsius to 180 degrees Celsius for about 5 minutes . The fatty acid halide reacts in situ with the protonogenic groups of the material in the wrapper, resulting in the formation of fatty acid esters and thus imparts hydrophobic properties and resistance to moisture penetration.

It is contemplated that the hydrophobically treated wrapper can reduce or prevent water, moisture, or liquid from being adsorbed into or transmitted through the wrapper. Advantageously, the hydrophobically treated wrapper does not adversely affect the taste of the product.

In particular embodiments, the wrapper, when used as a whole, forms the outer part of the aerosol generating article. In specific embodiments, the wrapper comprises: paper, homogenized paper, homogenized tobacco impregnated paper, homogenized tobacco, wood pulp, hemp, flax, rice straw, esparto, eucalyptus, cotton, etc. In specific embodiments, the substrate or paper forming the wrapper , has a density of the substrate or wrapping paper in the range of 10 to 50 grams per square meter, such as 15 to 45 grams per square meter. In combination with specific embodiments, the thickness of the substrate or paper forming the wrapper is in the range of 10 to 100 micrometers, or preferably 30 to 70 micrometers.

In combination with specific embodiments, the hydrophobic groups are covalently attached to the inner surface of the wrapper. In other embodiments, the hydrophobic groups are covalently attached to the outer surface of the wrapper. It has been found that the covalent attachment of hydrophobic groups to only one side or surface of the wrapper imparts hydrophobic properties to the opposite side or surface of the wrapper. A hydrophobic wrap or a hydrophobically treated wrap can reduce or prevent the development or absorption or transmission of a fluid, such as a liquid flavor or liquid releasing component, through the wrap.

In various specific embodiments, the implementation of the wrapper and, in particular, the area of the wrapper adjacent to the tubular element, preferably containing a gel containing the active substance, are hydrophobic or have one or more hydrophobic areas. This hydrophobic wrap or hydrophobically treated wrap can have a Cobb (ISO535:1991) water absorption value (in 60 seconds) of less than 40 g/m ² , less than 35 g/m ² , less than 30 g/m ² or less than 25 g/m ² .

In various specific embodiments, the wrapper, and in particular the portion of the wrapper adjacent to the tubular member, preferably containing an active agent-containing gel, has a water contact angle of at least 90 degrees, such as at least 95 degrees, at least at least 100 degrees, at least 110 degrees, at least 120 degrees, at least 130 degrees, at least 140 degrees, at least 150 degrees, at least 160 degrees, or at least 170 degrees. Hydrophobicity is determined using the TAPPI T558 om-97 test and the result is reported as an interface contact angle, expressed in "degrees", which can range from zero degrees to about 180 degrees. If the contact angle is not specified together with the term "hydrophobic", then the contact angle with water is at least 90 degrees.

In combination with specific embodiments, the hydrophobic surface is present uniformly along the length of the wrap, alternatively, in other specific embodiments, the hydrophobic surface is present non-uniformly along the length of the wrap.

Preferably, the wrapper is formed from any suitable cellulosic material, preferably plant-derived cellulosic material. In many embodiments, the wrapper is formed from a material with dangling protonogenic groups. Preferably, the protonogenic groups are reactive hydrophilic groups such as, but not limited to, hydroxyl group (-OH), amino group (-NH ₂ ) or sulfhydryl group (-SH ₂ ).

Particularly suitable wrappers that are adapted to the present invention will now be described by way of example. The hydroxyl suspended wrap material includes cellulosic material such as paper, wood, textiles, natural as well as artificial fibers. The wrapper may also include one or more filler materials, such as calcium carbonate, carboxymethyl cellulose, potassium citrate, sodium citrate, sodium acetate, or activated charcoal.

The hydrophobic surface or region of the cellulosic material forming the wrap may be formed with any suitable hydrophobic reagent or hydrophobic group. The hydrophobic reactant is preferably chemically bonded to the cellulosic material or suspended protonogenic groups of the cellulosic material forming the wrapper. In many embodiments, the hydrophobic reagent is covalently bonded to the cellulosic material or suspended protonogenic groups of the cellulosic material. For example, the hydrophobic group is covalently attached to the dangling hydroxyl groups of the cellulosic material forming the wrapper. The covalent bond between the structural components of the cellulosic material and the hydrophobic reagent can form hydrophobic groups that are more securely attached to the paper material than by simply placing a coating of the hydrophobic material on the cellulosic material forming the wrap. By chemically bonding the hydrophobic agent at the molecular level in situ, rather than applying a bulk layer of hydrophobic material to coat the surface, the permeability of the cellulosic material, such as paper, is better maintained because the coating tends to cover or block pores in the cellulosic material forming a continuous sheet, and reduce permeability. Chemical bonding of hydrophobic groups to the paper in situ can also reduce the amount of material needed to render the surface of the wrap hydrophobic. The term "in situ" in the context of this document refers to the location of a chemical reaction that occurs at or near the surface of the solid material from which the wrap is formed, which is different from the reaction with cellulose dissolved in solution. For example, the reaction occurs on or near the surface of the cellulosic material forming the wrapper, which contains the cellulosic material in a heterogeneous structure. However, the term "in situ" does not require that the chemical reaction take place directly on the cellulosic material that forms the hydrophobic portion of the tube.

The hydrophobic reagent may contain an acyl group or a fatty acid group. The acyl or fatty acid group, or a mixture thereof, may be saturated or unsaturated. A fatty acid group (such as a fatty acid halide) in the reactant can react with dangling protonogenic groups, such as hydroxyl groups of the cellulosic material, to form an ester bond covalently linking the fatty acid to the cellulosic material. As such, these pendant hydroxyl reactions can esterify the cellulosic material.

In some wrapper embodiments, the acyl or fatty acid group comprises C ₁₂ -C ₃₀ alkyl (an alkyl group containing 12 to 30 carbon atoms), C ₁₄ -C ₂₄ alkyl (an alkyl group containing 14 to 24 carbon atoms), or preferably C ₁₆ -C ₂₀ alkyl (an alkyl group containing 16 to 20 carbon atoms). Those skilled in the art will appreciate that the term "fatty acid" as used herein refers to a long chain aliphatic, saturated or unsaturated fatty acid that contains 12 to 30 carbon atoms, 14 to 24 carbon atoms, 16 to 20 carbon atoms or which contains more than 15, 16, 17, 18, 19 or 20 carbon atoms. In various embodiments, the hydrophobic reagent comprises an acyl halide, a fatty acid halide such as a fatty acid chloride, including, for example, palmitic acid chloride, stearic acid chloride, or behenic acid chloride, a mixture thereof. The in situ reaction between the fatty acid chloride and the cellulosic material forming a continuous sheet results in the formation of fatty acid esters of cellulose and hydrochloric acid.

Any suitable method of forming a chemical bond between the hydrophobic reactant or group and the cellulosic material forming the hydrophobic portion of the tube may be used. The hydrophobic group is covalently bonded to the cellulose material by diffusion of the fatty acid halide onto its surface without the use of a solvent.

As one example, an amount of a hydrophobic reagent such as an acyl halide, fatty acid halide, fatty acid chloride, palmitic acid chloride, stearic acid chloride, or behenic acid chloride, a mixture thereof, without a solvent, was applied (solventless process) to the surface of a wrapper paper at controlled temperature, for example, droplets of reagents that form circles on the surface with a diameter of 20 micrometers, located at an equal distance from each other. By controlling the vapor pressure of the reactant, the reaction can be promoted by diffusion to form ester bonds between fatty acid and cellulose while continuously removing unreacted acid chloride. The esterification of cellulose is in some cases based on the reaction of alcohol groups or pendent hydroxyl groups of cellulose with an acyl halide such as a carboxylic acid chloride, including a fatty acid chloride. The temperature that can be used to heat the hydrophobic reagent depends on the chemical properties of the reagent, and for fatty acid halides it is in the range, for example, from 120 degrees Celsius to 180 degrees Celsius.

The hydrophobic agent may be applied to the cellulosic wrapper paper material in any suitable amount or basis weight. In many embodiments, the basis weight of the hydrophobic reagent is less than 3 grams per square meter, less than 2 grams per square meter, or less than 1 gram per square meter, or is in the range of 0.1 to 3 grams per square meter, from 0, 1 to 2 grams per square meter or 0.1 to 1 gram per square meter. The hydrophobic agent can be coated or printed on the surface of the wrapper paper and defines a uniform or non-uniform distribution pattern.

Preferably, the hydrophobic portion of the tube is formed by reacting a fatty acid ester group or a fatty acid group with dangling hydroxyl groups in the cellulosic wrapper paper material to form a hydrophobic surface. The reaction step can be carried out by applying a fatty acid halide (such as an acid chloride) that provides a chemical bond between the fatty acid ester group or fatty acid group and the pendant hydroxyl groups in the cellulosic wrapper paper material to form a hydrophobic surface. The application step can be carried out by filling the fatty acid halide in liquid form with a solid support, such as a brush, roller, or an absorbent or non-absorbent pad, and then bringing the solid support into contact with the surface of the paper. The fatty acid halide can also be applied by printing techniques such as gravure printing, flexography, inkjet printing, heliography, by spraying, by wetting, or by dipping into a liquid containing the fatty acid halide. At the application stage, individual regions of the reagent can be deposited, forming a uniform or non-uniform distribution pattern of hydrophobic regions on the surface of the wrapper paper. A uniform or non-uniform distribution pattern of hydrophobic regions on the wrapper paper may be formed from at least 100 distinct hydrophobic regions, at least 500 distinct hydrophobic regions, at least 1000 distinct hydrophobic regions, or at least 5000 distinct hydrophobic regions. The individual hydrophobic regions may have any suitable shape such as, for example, a circle, a rectangle, or a polygon. The individual hydrophobic regions may have any applicable average transverse dimension. In many embodiments, individual hydrophobic regions have an average transverse dimension in the range of 5 to 100 micrometers, or in the range of 5 to 50 micrometers. A jet of gas can also be applied to the surface of the wrapper to promote diffusion of the applied reagent on the surfaces.

In combination with specific embodiments, a hydrophobic wrapper can be formed by a process comprising applying a liquid composition containing an aliphatic acid halide (preferably a fatty acid halide) to at least one paper surface of the wrapper, optionally applying a jet of gas to the surface of the wrapper to promote diffusion. of the applied fatty acid halide, and maintaining the surface temperature of the wrapper at 120 degrees Celsius to 180 degrees Celsius for at least 5 minutes, the fatty acid halide reacting in situ with the hydroxyl groups of the cellulosic material in the wrapper paper, resulting in leads to the formation of fatty acid esters. Preferably, the wrapper paper is made from paper and the fatty acid halide is stearic acid chloride, palmitic acid chloride, or a mixture of fatty acid chlorides with 16-20 carbon atoms in the acyl group. The hydrophobic wrapping paper obtained by the process described herein above is thus different from the material obtained by coating the surface with a layer of preformed cellulose fatty acid ester.

A hydrophobic wrapper can be obtained by a process of applying the liquid reagent composition to at least one surface of the paper of the wrapper at a rate ranging from 0.1 to 3 grams per square meter, or from 0.1 to 2 grams per square meter, or from 0.1 to 1 gram per square meter. The liquid reagent applied at these rates renders the surface of the wrapper paper hydrophobic.

In many specific embodiments, the thickness of the wrapper paper allows the hydrophobic groups or reagent applied on one surface to spread to the opposite surface, effectively providing similar hydrophobic properties to both opposite surfaces. In one example, the thickness of the wrapper paper was 43 micrometers and both surfaces were rendered hydrophobic by a (gravure) printing process using stearic acid chloride as the hydrophobic agent for one surface.

In some specific embodiments, the implementation of the material or method, designed to create a hydrophobic nature of the hydrophobic section of the tube, essentially does not affect the permeability of the wrap in other areas. Preferably, a reagent or method for creating a hydrophobic portion of the tube changes the permeability of the wrap in that treated portion (compared to the untreated portion of the wrap) by less than 10 percent, or less than 5 percent, or less than 1 percent.

In many specific embodiments, a hydrophobic surface can be formed by printing a reagent along the length of the cellulosic material. Any applicable printing methods may be used, such as gravure printing, inkjet printing, and the like. Gravure printing is preferred. The reagent may include any applicable hydrophobic groups which may be chemically, eg covalently, attached to the wrapper, in particular the cellulosic material or cellulosic material pendant groups of the wrapper.

In combination with specific embodiments according to the present invention, an aerosol generating article comprises a current collector. In combination with specific embodiments, the tubular element comprises a current collector. Preferably, the current collector is elongated and placed longitudinally within the tubular element. Preferably, the current collector is in thermal contact with a gel or gel-filled porous material. This can facilitate the transfer of heat from the heating element in the aerosol generating device to and through the aerosol generating article, preferably through the tubular element, to the current collector and hence the gel or gel-filled porous medium when in proximity to the current collector. When the heating is carried out by induction heating, the fluctuation electromagnetic field is transmitted through the aerosol generating article, preferably through the tubular element to the current collector, as a result of which the current collector converts the fluctuation field into thermal energy, thus heating near the gel or gel-filled porous material. Typically, the current collector has a thickness of 10 to 500 micrometers. In preferred embodiments, the current collector has a thickness of 10 to 100 micrometers. Alternatively, the current collector may be in the form of a powder that is dispersed within a gel. Typically, the current collector is configured to dissipate between 1 watt and 8 watts of power when used in conjunction with a particular inductor, such as 1.5 watts to 6 watts. By "capable" it is meant that the elongated pantograph can be made of a specific material and can have specific dimensions, which allows energy dissipation in the amount of from 1 watt to 8 watts when used in conjunction with a specific conductor that generates a fluctuating magnetic field with a known frequency and known field strength.

Alternatively or additionally, the current collector may be in the form of a powder, such as a metal powder. The powder may be in a gel, or a wrapper, or the space between the gel and the wrapper, or combinations thereof.

According to a further aspect in accordance with the present invention, there is provided an aerosol generating system comprising an electrically controlled aerosol generating device having an inductor for generating an alternating or fluctuating electromagnetic field, and an aerosol generating article comprising a current collector as described and defined herein. The aerosol-generating product engages with the aerosol-generating device, whereby the fluctuating electromagnetic field generated by the inductor induces a current in the current collector, which leads to heating of the current collector. An electrically controlled aerosol generating device is preferably configured to generate a fluctuating electromagnetic field having a magnetic field strength (magnetic field strength) of 1 kiloampere per meter (kA/m) to 5 kiloamperes per meter (kA/m), preferably from 2 kiloamperes per meter to 3 kiloamperes per meter (kA/m), for example, 2.5 kiloamperes per meter (kA/m). The electrically controlled aerosol generating device is preferably configured to generate a fluctuating electromagnetic field having a frequency of 1 megahertz (MHz) to 30 megahertz, such as 1 megahertz to 10 megahertz, such as 5 megahertz to 7 megahertz.

Preferably, the elongated current collector according to the present invention is part of a consumable element and is thus only used once. The flavoring of subsequent aerosol generating articles may be more uniform due to the fact that a new current collector is used to heat each aerosol generating article. The requirement to clean the aerosol generating device is greatly simplified for devices with reusable heating elements and can be met without damaging the heat source. In addition, the absence of a heating element that must penetrate the interior of the aerosol generating substrate means that insertion of the aerosol generating article into and removal from the aerosol generating device is less likely to cause accidental damage to either the aerosol generating article or the device, generating aerosol. Therefore, the entire aerosol generating system is reliable.

When the pantograph is inside a fluctuating electromagnetic field, the eddy currents induced in the pantograph cause the pantograph to heat up. Ideally, the current collector is in thermal contact with the gel or gel-filled porous material of the tubular member, thus the gel or gel-filled porous material, or both the gel and the gel-filled porous material, is heated by the current collector.

In combination with specific embodiments, the aerosol generating article is designed to engage with an electrically controlled aerosol generating device comprising an induction heating source. An induction heating source or an inductor generates a fluctuating electromagnetic field to heat a current collector located inside the fluctuating electromagnetic field. In use, the aerosol-generating article is engaged with the aerosol-generating device, whereby the current collector is located within the fluctuating electromagnetic field generated by the inductor.

Preferably, the current collector has a length dimension that is larger than its width dimension or its thickness dimension, for example twice its width dimension or its thickness dimension. Thus, the pantograph can be described as an elongated pantograph. Such a current collector is placed essentially longitudinally inside the rod. This means that the length dimension of the elongated current collector is placed so that it is approximately parallel to the longitudinal direction of the aerosol generating article, for example, is in the range of plus or minus 10 degrees relative to the longitudinal axis relative to the longitudinal direction of the rod. In preferred embodiments, the elongated current collector element may be located at a radially central position within the aerosol generating article and extend along the longitudinal axis of the aerosol generating article.

The current collector is preferably in the form of a pin, rod, strip, sheet or plate. The current collector preferably has a length of 5 mm to 15 mm, for example 6 mm to 12 mm or 8 mm to 10 mm. Typically, the length of the current collector is at least the same as that of the tubular, thus typically between 20 percent and 120 percent of the longitudinal length of the tubular, such as 50 percent to 120 percent of the length of the tubular, preferably 80 percent to 120 percent of the longitudinal length of the tubular element. The current collector preferably has a width of 1 mm to 5 mm and may have a thickness of 0.01 mm to 2 mm, for example 0.5 mm to 2 mm. A preferred embodiment may have a thickness ranging from 10 micrometers to 500 micrometers, or even more preferably from 10 micrometers to 100 micrometers. If the current collector has a constant cross section, for example a circular cross section, it has a preferred width or diameter between 1 millimeter and 5 millimeters.

The current collector may be formed from any material that can be inductively heated to a temperature sufficient to generate an aerosol from the aerosol forming substrate. In preferred embodiments, the current collector comprises metal or carbon. A preferred current collector may comprise a ferromagnetic material, such as ferritic cast iron, or ferromagnetic steel, or stainless steel. In other specific embodiments, the implementation of the current collector contains aluminum. Preferred pantographs may be formed from 400 series stainless steel, such as 410 or 420 or 430 stainless steel. Different materials will dissipate different amounts of energy when located within electromagnetic fields having similar frequency and field strengths. Thus, all current collector parameters such as material type, length, width and thickness can be changed to provide the desired power dissipation within a known electromagnetic field.

Preferably, the current collectors are heated to temperatures above 250 degrees Celsius. However, the pantographs are preferably heated to a temperature of less than 350 degrees Celsius to prevent ignition of material in contact with the pantograph. Suitable current collectors may comprise a non-metal core with a metal layer placed on the non-metal core, for example with metal tracks formed on the surface of the ceramic core.

The current collector may have a protective outer layer, for example a protective ceramic layer or a protective glass layer, enclosing the elongated current collector. The current collector may comprise a protective coating formed of glass, ceramic or inert metal formed over the core material of the current collector.

Preferably, the current collector is placed in thermal contact with the aerosol-forming substrate, for example, within the tubular element. Thus, when the current collector is heated, the aerosol-forming substrate is heated, and the material is released from the gel to form an aerosol. Preferably, the current collector is placed in direct physical contact with the gel containing the active substance, for example, inside a tubular element, and the current collector is preferably surrounded by a gel or a porous medium filled with gel.

In particular embodiments, the aerosol generating article or tubular element comprises a single current collector. Alternatively, in other specific embodiments, the tubular member or aerosol generating article comprises more than one current collector.

Any of the features described herein with respect to a particular embodiment, aspect, or example of a tubular, aerosol generating article, or aerosol generating device may be equally applied to any embodiment of a tubular, aerosol generating article, or aerosol generating device.

Further reference will be made to the drawings, which depict one or more aspects described in the present invention. However, it will be understood that other aspects not depicted in the drawings fall within the scope of the present invention. Like numbers used in the figures refer to like components, steps, and the like. However, it will be understood that the use of a number to designate a component in a given figure is not intended to limit a component in another figure labeled with the same number. Additionally, the use of different numbers to designate components in different figures is not intended to indicate that components of different numbers cannot be the same as or similar to components of different numbers. The figures are presented for purposes of illustration and not limitation. The schematic representations shown in the figures are not necessarily drawn to scale.

Fig. 1 is a schematic sectional view of an aerosol generating device and a schematic side view of an aerosol generating article that can be inserted into the aerosol generating device.

Fig. 2 is a schematic sectional view of the aerosol generating device shown in FIG. 1 and a schematic side view of the product shown in FIG. 1 inserted into an aerosol generating device.

Fig. 3-6 are schematic cross-sectional views of various embodiments of aerosol generating articles.

Fig. 7 is a schematic side view of an aerosol generating article.

Fig. 8 is a schematic perspective view of an embodiment of the aerosol generating article of FIG. 7 , with the wrapper section removed for illustrative purposes.

Fig. 9 is a schematic side view of an aerosol generating article.

Fig. 10 is a schematic side view of an embodiment of the aerosol generating article shown in FIG. 9 with part of the wrapper removed.

Fig. 11 is a schematic view of a fluid guide of a sample aerosol generating article.

Fig. 12 is a schematic view of an example of an aerosol generating article in which the fluid guide shown in FIG. 11 inserted.

In FIG. 13 is a sectional view along the length of the aerosol generating article.

In FIG. 14 , 15 and 16 show a perspective view and two cross-sectional views of a tubular member for an aerosol generating article.

In FIG. 17 shows part of a manufacturing process for a tubular element for an aerosol generating article.

In FIG. 18 shows part of an additional manufacturing process for a tubular member for an aerosol generating article.

In FIG. 19 shows part of an alternative manufacturing process for a tubular member for an aerosol generating article.

In FIG. 20 shows an aerosol generating system comprising an electrically heated aerosol generating device and an aerosol generating article.

In FIG. 21 , 22 and 23 show cross-sectional views of additional tubular members for an aerosol generating article.

In FIG. 24 is a sectional view along the length of the aerosol generating article.

In FIG. 25-29 show schematic cross-sectional views of various tubular elements.

In FIG. 30-34 show schematic cross-sectional views of various tubular elements.

In FIG. 1 and 2 show an example of an aerosol generating article when used with an aerosol generating device. Suitable for use with tubular elements in accordance with the present invention.

Onfig. 1-6 shows a longitudinal section of the products100that generate aerosol. In other words, onfig. 1-6 product view shown100, generating an aerosol, in a longitudinal section in half. In the embodiments offig. 1-6the aerosol generating article is tubular. If you look at the entire end surface of the product100, which generates an aerosol, according tofig. 1-6or near end101, or from the far end103, it will be round. Tubular element500if it is used or shown in the embodiments according tofig. 1-6, is also tubular. Tubular element500 is possibly a tubular component of a tubular product100, generating an aerosol, in accordance with the embodiments offig. 1-6. If you look at the entire end surface of the tubular element500used or shown in the embodiment offig. 1-6, whether from the proximal end or the distal end, the surface of the tubular member will be round. Because thefig. 1-6 are a two-dimensional longitudinal sectional view of the lateral bend of the aerosol generating article and the tubular element600, among other components, cannot be seen. The drawings are for illustrative purposes to explain the present invention and may not be drawn to scale. Tubular element500if it is shown onfig. 1-6, intended to illustrate tubular element500in the product100generating aerosol, but product features100, generating an aerosol, are optional in relation to the shown embodiment of the tubular element500and should not be considered as essential features of a tubular element500.

In FIG. 1-2 illustrate an example of an aerosol generating article 100 and an aerosol generating device 200 . The aerosol generating article 100 has a proximal or mouth end 101 and a distal end 103 . In FIG. 2, the distal end 103 of the aerosol-generating article 100 is housed in the reservoir 220 of the aerosol-generating device 200 . The aerosol generating device 200 includes a wrapper 110 defining a reservoir 220 that is configured to receive the aerosol generating article 100 . The aerosol generating device 200 also includes a heating element 230 , which defines a cavity 235 , configured to receive the aerosol generating article 100 , preferably by an interference fit. Heating element 230 may include an electrically resistive heating component. Additionally, device 200 includes a power supply 240 and control electronics 250 that cooperate to control heating of heating element 230 .

The heating element 230 may heat the distal end 103 of the aerosol generating article 100 that includes the tubular element 500 (not shown). In this example, the tubular element 500 contains a gel 124&apos ; containing an active substance, and wherein the active substance contains nicotine. The heating of the aerosol-generating article 100 causes the tubular member 500 containing the active agent-containing gel 124 to generate an aerosol containing the active agent, which can be transferred from the aerosol-generating article 100 at the proximal end 101 . The aerosol generating device 200 includes a housing 210.

In FIG. 1-2 does not show the exact heating mechanism.

Onfig. 1-6 shows a longitudinal section of the products100that generate aerosol. In other words, onfig. 1-6 product view shown100, generating an aerosol, in a longitudinal section in half. In the embodiments offig. 1-6the aerosol generating article is tubular. If you look at the entire end surface of the product100, which generates an aerosol, according tofig. 1-6or near end101, or from the far end103, it will be round. Tubular element500if it is used or shown in the embodiments according tofig. 1-6, is also tubular. Tubular element500 is possibly a tubular component of a tubular product100, generating an aerosol, in accordance with the embodiments offig. 1-6. If you look at the entire end surface of the tubular element500used or shown in the embodiment offig. 1-6, whether from the proximal end or the distal end, the surface of the tubular member will be round. Because thefig. 1-6 are a two-dimensional longitudinal sectional view of the lateral bend of the aerosol generating article and the tubular element600, among other components, cannot be seen. The drawings are for illustrative purposes to explain the present invention and may not be drawn to scale. Tubular element500if it is shown onfig. 1-6, intended to illustrate tubular element500in the product100generating aerosol, but product features100, generating an aerosol, are optional in relation to the shown embodiment of the tubular element500and should not be considered as essential features of a tubular element500.

In some examples, the heating mechanism may perform conduction heating, where heat is transferred from the heating element 230 of the aerosol generating device 200 to the aerosol generating article 100 . This can easily happen when the aerosol generating article 100 is positioned in the reservoir 220 of the aerosol generating device 200 and the distal end 103 (which is preferably the end where the gel containing tubular 500 is located), and thus the article 100 . the aerosol generating device is in contact with the heating element 230 of the aerosol generating device 200' . In specific examples, the heating element comprises a heating plate that protrudes from the aerosol generating device 200 and is suitable for penetrating the aerosol generating article 100 to make direct contact with the gel 124 of the tubular 500 .

In this example, the heating mechanism performs induction heating, where the heating element emits radio-magnetic radiation, which is absorbed by the tubular element when the aerosol generating article 100 is located in the reservoir 220 of the aerosol generating device 200 .

Onfig. 3a and 3b shows an embodiment of the product100, generating an aerosol containing a wrapper110 and guide400 for fluid. Onfig. 3a And3b shows a longitudinal section of the product100, generating aerosol. In other words,fig. 3a Andfig. 3b represent the type of product100, generating an aerosol, in a longitudinal section in half. In the embodiment onfig. 3a Andfig. 3bthe aerosol generating article is tubular. If you look at the entire end surface of the product100, which generates an aerosol, according tofig. 3a or3b or near end101, or from the far end103, it will be round. Tubular element500 onfig. 3a orfig. 3b is also tubular. Tubular element500 is a tubular component of a tubular product100, generating an aerosol, in accordance with the embodiments offig. 3a Andfig. 3b. If you look at the entire end surface of the tubular element500 in accordance with the embodiment offig. 3a orfig. 3b either from the proximal end or the distal end, the surface of the tubular element will be round. Because thefig. 3a Andfig. 3b are a two-dimensional longitudinal sectional view of the lateral bend of the aerosol generating article and the tubular element600, among other components, cannot be seen. Onfig. 3a proximal end of tubular element500 not shown as a straight edge. Onfig. 3b the proximal end of the tubular element is shown500 in the form of a straight line parallel to the width of the product generating the aerosol. The drawings are for illustrative purposes to explain the present invention and may not be drawn to scale. Tubular element500shown onfig. 3a Andfig. 3bfor illustration tubular element in an aerosol generating article, but the characteristics of the article100aerosol generating are optional with respect to the shown embodiment of the tubular element and should not be considered as essential features of the tubular element.500.

guide400 for fluid has a proximal end401, far end403 and internal longitudinal passage430 from the far end403to the near end401. Internal longitudinal passage430 has the first part410 and second part420. First part410 defines the first part of the pass430, which runs from the far end413 first part410 to the near end411 first part410. Second part420 defines the second part of the pass430, which runs from the far end423 second part420 to the near end421 second part420. First part410 passage430 has a tapered cross-sectional area extending from the distal end413to the near end411 first part410to cause a fluid, such as air, to accelerate through this first part410 internal longitudinal passage430 when negative pressure is applied at the near end101 products100that generates an aerosol. Cross-sectional area of the first part410 internal longitudinal passage430 tapers from the far end413 towards the near end411first parts410. Second part420 internal longitudinal passage430 has an expanding cross-sectional area from the distal end423 to the near end421 second part420 guide400 for fluid. In the second part420 internal longitudinal passage430 the fluid may slow down.

The wrapper 110 defines an open proximal end 101 of the aerosol generating article 100 and a distal end 103 . A tubular member 500' containing a gel containing an active agent (not shown) is placed at the distal end 103 of the aerosol generating article 100 '. The aerosol generating article 100 includes an end cap 600 at its extreme distal end 103 . An end plug 600 is located on the far side of the tubular 500 . The end plug 600 contains a material with a high draw resistance, thereby diverting fluid to enter the aerosol generating article 100 through the holes 150 when negative pressure is applied to the proximal end 101 of the aerosol generating article 100 . The aerosol generated or released from the active agent-containing tubular 500 when heated can enter a cavity 140 in the aerosol generating article, downstream of the tubular 500 to be transferred through the internal longitudinal passage 430 .

Holes 150 extend through wrapper 110 . At least one opening 150 is in communication with an outer longitudinal passage 440' formed between the outer surface of the fluid guide 400 and the inner surface of the wrap 110' . A seal is formed between the fluid guide 400 and the wrapper 110 at a location between the holes 150 and the proximal end 101' .

When negative pressure is applied to the proximal end 101 of the aerosol-generating article 100 , the fluid enters the holes 150 , flows through the outer longitudinal passages 440 into the cavity 140 and to the tubular element 500 containing the gel containing the active substance, where the fluid can trap the aerosol, when the tubular member 500' containing the active agent-containing gel is heated. The fluid then flows through the inner longitudinal passage 430 and through the proximal end 101 of the aerosol generating article 100' . As the fluid flows through the first portion 410 of the inner longitudinal passage 430, the fluid accelerates. As the fluid flows through the second portion of the inner longitudinal passage 430, the fluid slows down. In the depicted embodiment, the wrapper 110 defines a proximal cavity 130 between the proximal end 401 of the fluid guide 400 and the proximal end 101 of the article 100 that can serve to slow down the fluid before exiting the mouth end 101 .

In FIG. 4 shows another embodiment of an aerosol generating article 100 comprising a wrap 110 and a fluid guide 400 .

The fluid guide 400 has a proximal end 401 , a distal end 403 , and an internal longitudinal passage 430 from the distal end 403 to the proximal end 401 . The inner longitudinal passage 430 has a first part 410 , a second part 420 , and a third part 435 . The first part 410 is between the second 420 and third 435 parts. The first part 410 defines the first part of the inner longitudinal passage 430 , which extends from the distal end 413 of the first part 410 to the proximal end 411 of the first part 410 . The second part 420 defines a second part of the inner longitudinal passage 430 , which extends from the distal end 423 of the second part 420 to the proximal end 421 of the second part 420 . The third part 435 defines a third part of the inner longitudinal passage 430 that extends from the distal end 433 of the third part to the proximal end 431 of the third part. The third portion 435 has a substantially constant internal diameter from the proximal end 431 to the distal end 433 . The first portion 410 of the inner longitudinal passage 430 has a tapered cross-sectional area extending from the distal end 413 to the proximal end 411 of the first portion 410 to cause fluid to be accelerated through this first portion 410 of the inner longitudinal passage 430 when negative pressure is applied at the proximal end 101 of article 100 , generating aerosol. The cross-sectional area of the first portion 410 of the inner longitudinal passage 430 tapers from the distal end 413 to the proximal end 411 of the first portion 410 . The second part 420 of the internal longitudinal passage 430 has a widening cross-sectional area from the distal end 423 to the proximal end 421 of the second part 420 of the internal passage 430 for fluid. In the second part 420 of the inner longitudinal passage 430, the fluid may slow down as it moves from the far to the near direction.

Like the product100shown onfig. 3, the product shown infig. 4, contains a wrapper110, which defines the open near end101 and the far end103with end cap600with high draw resistance. Tubular element500, containing a gel containing the active substance, is placed at the far end103aerosol generating products. The aerosol released from the gel containing an active substance, when heated, can enter the cavity140 in the product100, generating aerosol, for transfer through the internal longitudinal passage430.

Although not shown in FIG. 4 , aerosol generating article 100 comprises at least one opening (for example, openings 150 shown in FIG . environment and the inner surface of the wrapper 110 . A seal is formed between the fluid guide 400 and the wrapper 110 at a location between the holes and the proximal end 101' . Although the seal does not need to be fluid tight, it is advantageous that the seal here has a high draw resistance or some degree of tightness to divert fluid entering the openings 150 along the outer longitudinal passages farther towards the tubular member 500' . A third portion 435 of the fluid guide 400 extends along the length of the fluid guide 400 and the outer longitudinal passage 440 to provide additional spacing between holes (not shown in FIG. 4 that may be near the proximal end 401 of the inner longitudinal passage) and the tubular member. 500 containing the active agent-containing gel, so that the active agent-containing gel is unlikely to leak through the openings 150 .

By applying negative pressure to the proximal end 101 of the aerosol generating article 100 of FIG. 4 , fluid enters openings 150 , flows through outer longitudinal passage 440 into cavity 140 , and to tubular member 500 containing the active agent-containing gel, where fluid can entrain material from the active agent-containing gel as it is heated. The fluid may then flow through the internal longitudinal passage 430 and through the proximal end 101 of the aerosol generating article. As fluid flows through the inner longitudinal passage 430, fluid flows through the third part 435 , the first part 410 , and then the second part 420 of the aerosol generating article 100 . As the fluid flows through the first portion 410 of the inner longitudinal passage 430, the fluid accelerates. As the fluid flows through the second portion 420 of the inner longitudinal passage 430, the fluid slows down. In alternative specific embodiments, the implementation of the second part 420 and the third part 435 of the inner longitudinal passage 430 are optional. In the depicted embodiment, the wrapper defines a proximal cavity 130 between the proximal end 401 of the fluid guide 400 and the proximal end 101 of the article 100 that can serve to slow down the fluid before exiting the proximal end 101 .

In FIG. 5 and FIG. 6 depicts further embodiments of aerosol generating articles 100 that comprise a wrapper 110 , an end cap 600 , a tubular member 500 , which contains an active agent-containing gel, a proximal cavity 130 , a cavity 140 , and a fluid guide 400 . The fluid guide 400 has a proximal end 401 , a distal end 403 , and an internal longitudinal passage 430 from the distal end 403 to the proximal end 401 . The inner longitudinal passage 430 has a first part 410 and a third part 435 . The first part 410 defines the first part 410 of the inner longitudinal passage 430 , which extends from the distal end 413 of the first part 410 to the proximal end 411 of the first part 410 . The third part 435 defines a third part of the inner longitudinal passage 430 , which extends from the proximal end 433 of the third part 435 to the distal end 431 of the third part 435 . The third portion 435 has a substantially constant inside diameter from the proximal end 433 to the distal end 431 .

In FIG. 5, the first portion 410 of the inner longitudinal passage 430 has a substantially constant internal diameter from the distal end 413 to the proximal end 411 of the first portion 410 . The inner diameter of the inner longitudinal passage 430 on the first portion 410 is smaller than the inner diameter of the inner longitudinal passage 430 on the third portion 435' . The limited internal diameter of the inner longitudinal passage 430 on the first portion 410 relative to the third portion 435 may cause the fluid to accelerate as it flows from the third portion 435 to the first portion 410 .

In FIG. 6, the first portion 410 of the fluid guide 400 includes several segments 410A , 410B , 410C with stepped inner diameters. The outermost segment 410A has the largest inner diameter and the outermost segment 410C has the smallest inner diameter. As fluid flows through the inner longitudinal passage 430 from the first segment 410A to the second segment 410B and from the second segment 410B to the third segment 410C , the fluid may accelerate as the cross-sectional area of the inner longitudinal passage 430' narrows in a staggered fashion.

The first parts 410 in FIG. 5 and FIG. 6 provide design examples that may be useful when the material used to form the first portion 410 is not easily moldable. For example, the first part 410 or segments 410A , 410B , 410C of the first part 410 may be formed from cellulose acetate extrusion. In contrast, the first portions 410 of the fluid guide 400 shown in FIG. 3 and FIG. 4 provide examples of construction that may be useful when the material used to form the first portion 410 is moldable, such as when the first portion is formed from, for example, polyetheretherketone (PEEK).

Like the product100, generating an aerosol, depicted infig. 3Andfig. 4, aerosol generating products depicted infig. 5Andfig. 6, contain a wrapper110, which defines the open near end101 and the far end103with end cap600, and the end cap600has a high tightening resistance. Tubular element500, in these examples containing gel124, containing the active substance, is located at the far end103products100, generating aerosol. Aerosol released from the tubular element500containing gel124, containing the active substance, when heated, can enter the cavity140 in the product100, generating aerosol, for transfer through the internal longitudinal passage430.

Although not shown in FIG. 5 and FIG. 6 , aerosol generating article 100 includes at least one opening ( for example, openings 150 shown in FIG . environment and the inner surface of the wrapper 110 . A seal is formed between the fluid guide 400 and the wrapper 110 at a location between the opening or openings 150 and the proximal end 101' . This helps to divert fluid entering through the openings 150 along the outer longitudinal passages 440 into the tubular member 500 or in the far direction. The third portion 435 of the inner longitudinal passage 430 , among other things, is designed to extend along the length of the fluid guide 400 and the outer longitudinal passage 440 to provide additional spacing between the holes 150 (not shown in FIG. 5 and FIG. 6 ), which may be located near the proximal end of the outer longitudinal passage 440 ') and the tubular member 500' containing the gel 124 ' containing the active agent, so that leakage of the gel 124 ' containing the active agent through the holes 150 is unlikely.

By applying negative pressure to the proximal end 101 of the aerosol generating article 100 of FIG. 5 and FIG. 6 , fluid enters openings 150 , flows through outer longitudinal passage 440 into cavity 140 to tubular 500 containing active agent-containing gel 124 , where fluid can entrain material from the gel when tubular 500 is heated. The fluid may then flow through the inner longitudinal passage 430 and through the proximal end 101 . As fluid flows through the inner longitudinal passage 430, fluid flows through the third portion 435 , and then the first portion 410 of the aerosol generating article 100 . As fluid flows into the first portion 410 of the inner bore 430 , the inner bore 430 can provide acceleration because the inner diameter of the inner bore 430 is smaller at the first portion 410 than at the third portion 435' . In the aerosol generating product 100 shown in FIG. 6 , fluid may be accelerated as it passes through each segment 410A , 410B , 410C of first portion 410 .

In the embodiments shown in FIG. 4 and FIG. 5 , the wrapper defines a cavity 130 between the proximal end 401 of the fluid guide 400 and the proximal end 101 of the aerosol generating article 100 that can serve to slow fluid that exits the internal longitudinal passage 430 at the proximal end 401 of the fluid guide 400 before exit from the near end 101 .

In FIG. 7-8 illustrate an embodiment of an aerosol generating article 100 . The aerosol generating article 100 includes a wrapper 110 and holes 150 extending through the wrapper 110 . The aerosol generating article comprises an end plug 600′ which defines the distal end 103 of the aerosol generating article 100′ . The end plug has a high tightening resistance. The tubular member 500 ' containing the active agent-containing gel is placed on the proximal side of the end cap 600' in the aerosol generating article 100 '. When heated, the tubular member 500 can form an aerosol that enters the cavity 140 toward the proximal side of the tubular member 500' .

In FIG. 7 shows a side view of the aerosol generating tubular 100 '. Looking at the surface of either the proximal end 101' or the distal end 103' , the end surface will be circular. Fig. 7 is a two-dimensional image, and thus the bending of the aerosol generating tubular cannot be seen. Fig. 8 is a partial sectional perspective view of the same embodiment as shown and described with FIG. 7 . It can be seen that the distal end surface, although partially blocked, is round. It can be seen that the surface of the proximal end 101' , although partially cut, will also be round. Also in FIG. 8 , it can be seen that the tubular member 500 has a tubular shape. Also in FIG. 8 , it can be seen that the end cap 600 is also tubular for this embodiment.

At least one of the openings 150 is in communication with at least one outer longitudinal passage 440 ' formed between the fluid guide 400 and the wrap 110 and between the side walls 450 ' . The fluid guide 400 has a rim 460 which is pressed against the inner surface of the wrap 110 to form a seal. The seal is formed between the proximal end 101 and the holes 150 .

With the application of negative pressure at the proximal end 101 , fluid, such as air, can enter the holes 150 and flow through the outer longitudinal passages 440 into the cavity 140 and then through the tubular member 500 where the material from the gel 124 is released into the fluid. Fluid then moves through internal longitudinal passage 430 , through fluid guide 400 , into cavity 130″ defined by wrapper 110″ , and through (and out of) proximal end 101 of aerosol generating article 100 ″. The inner longitudinal passage 430 of the fluid guide 400 may be formed in any suitable manner, such as in the examples shown in FIGS. 3-6 .

In FIG. 9-10 illustrate an embodiment of aerosol generating article 100 that includes a mouthpiece 170 that forms part of the wrapper 110 and fluid guide 400 of aerosol generating article 100 . The aerosol generating article 100 comprises a tubular member 500 , which defines the distal end 103 of the aerosol generating article 100 and is also formed by a portion of the wrapper 110. The tubular member 500 is configured to receive the distal portion of the mouthpiece 170 , such as by an interference fit. A tubular member 500 ' containing an active agent-containing gel 124' (not shown) may be placed at the distal end. The aerosol generating article 100 includes an end cap 600 at the extreme distal end 103 . The 600 end plug has a high draw resistance.

In FIG. 9 shows part of a side sectional view of the aerosol generating tubular 100 '. Looking at the entire surface of either the proximal end 101' or the distal end 103' , the end surface will be circular. Fig. 9 is a two-dimensional image, and thus the bending of the aerosol generating tubular cannot be seen. Fig. 10 is a partial sectional perspective view of the same portion in partial section of the aerosol generating article 100 as shown and described with FIG. 9 . It can be seen that the distal end surface, although partially blocked, is round. It can be seen that the surface of the proximal end 101' , although partially cut, will also be round. Also in FIG. 10, it can be seen that the tubular member 500 has a tubular shape. Also in FIG. 10, it can be seen that the end cap 600 is also tubular for this embodiment.

The fluid guide 400 includes an internal longitudinal passage 430 (not shown) that includes a portion that accelerates the fluid and may include a portion that decelerates the fluid. The seal is formed between the wrap 110 and the fluid guide 400 because the wrap 110 and the fluid guide 400 are formed from one piece. An opening 150 is formed in the wrap 110 and is in communication with an outer longitudinal passage 640 which is formed at least in part by the inner surface of the wrap 110 . A portion of the outer longitudinal passage 640 is generally formed between the inner surface of the wrap 110 and the outer portion of the fluid guide 400 . The outer longitudinal passage 640 extends less than the full distance around the article 100 . In this embodiment, the outer longitudinal passage 640 extends around 50 percent of the circumferential distance of the aerosol generating article 100' . An outer longitudinal passage 640 directs fluid, such as air, from opening 150 to tubular 500 (not shown) near distal end 103' .

When negative pressure is applied at the proximal end 101, fluid, such as ambient air, enters the aerosol generating article 100 through the opening 150 . The fluid flows through the outer longitudinal passage 640 to the tubular member 500' containing the active agent-containing gel 124' located at the distal end 103' . The fluid then flows through the inner longitudinal passage 430 of the fluid guide 400 where the fluid is accelerated and optionally decelerated. A fluid, such as air, may then exit the proximal end 101 of the aerosol generating article 100 .

Fig. 11 is an illustration of a fluid guide 400 formed from a material such as polyetheretherketone (PEEK) by computer numerical control (CNC) machining. The fluid guide 400 shown in FIG. 11 has a length of 25 millimeters, an outer diameter at the proximal end of 6.64 millimeters, and an outer diameter at the distal end of 6.29 millimeters. The outer diameter at the distal end is the diameter of the distal end from the base of the sidewalls . The fluid guide 400 has 12 outer longitudinal passages 640' formed around its outer surface, with each side wall having a substantially semi-circular cross-sectional area. The outer longitudinal passages 640 have a radius of 0.75 millimeters and a length of 20 millimeters. The fluid guide 400 has an internal longitudinal passage 430 (not shown) comprising three parts: a first part (fluid accelerating part), a second part (fluid decelerating part) located downstream or near the first part, and a third part located upstream or away from the first part. The third portion of the inner longitudinal passage 430 of the fluid guide 400 extends from the distal end 103 of the aerosol generating article 100 and has an internal diameter of 5.09 millimeters at the distal end, which decreases to a diameter of 4.83 millimeters at the proximal end the first part of the inner longitudinal passage 430 . The length of the first part of the inner longitudinal passage is 15 millimeters. The first portion of the inner longitudinal passage 430 extends from the distal end at the proximal end of the third portion to the proximal end. The first portion of the inner longitudinal passage 430 has an inside diameter of 2 millimeters at its distal end, which tapers to 1 millimeter at its proximal end. The length of the first part of the inner longitudinal passage is 5.5 mm. The second part of the inner longitudinal passage 430 extends from the distal end at the proximal end of the first part to the proximal end at the proximal end of the product. The second part of the inner longitudinal passage 430 has an inside diameter of 1 millimeter at its distal end, which is the same as the inside diameter at the proximal end of the first part. The inner diameter of the second part increases at a decreasing rate (according to a curve) towards the proximal end, which has an inner diameter of 5 millimeters. The length of the second part is 4.5 mm. Accordingly, the fluid drawn through the inner passage of the fluid guide from the distal end to the proximal end encounters a chamber with a substantially constant inner diameter (third part), a constricted section capable of accelerating the fluid (first part), and an expanded section configured to slow down the fluid (second part). It has been found that providing such an internal longitudinal passage 430 for the aerosol released from the heated tubular 500 (not shown) can allow the aerosol volume and droplet size to be controlled such that a satisfactory aerosol is released. Fig. 11 is a side view of a tube-shaped fluid guide 400 . Fig. 11 is a two-dimensional view, and therefore the bending of the tubular shape of the fluid guide 400 in this embodiment cannot be seen. Looking at the end surface of the fluid guide 400 of this embodiment, the surface is round.

Fig. 12 is an illustration of an assembled aerosol generating article 100 . The aerosol generating article 100 includes a wrapper 110 into which the fluid guide 400 of FIG. 11 . The wrapper shown in Fig. 12 is a generally cylindrical paper tube having a length of 45 millimeters. One end of the wrapper 110 is distal to provide a distal end of the wrapper to hold tubular member 500 (not shown). The proximal portion of the outer portion of the fluid guide 400 above the outer longitudinal passages has a diameter of 6.64 millimeters. This diameter is substantially identical to the inner diameter of the wrapper, whereby an interference fit seal can be formed between the proximal portion of the outer portion of the fluid guide 400 and the inner portion of the wrapper 110' . The distal portion of the outer portion of the fluid guide 400 , extending along the length of the outer longitudinal passages, may have a diameter that is slightly smaller than the diameter of the proximal portion of the outer portion of the fluid guide 400 , whereby the fluid guide can be easily inserted into the wrap 110 up to the nearest part of the outer part, where the interference fit is carried out. Fig. 12 is a side view of the aerosol generating product 100' . Fig. 12 is a two-dimensional view, and therefore the bending of the tubular shape of the aerosol generating article 100 cannot be seen in this embodiment. Looking at the end surface of the aerosol generating article 100 of this embodiment, the surface will be round.

In FIG. 13 illustrates an aerosol generating article 100 made with a tubular member 500 containing gel 124 which is further illustrated in FIG. 14 , 15 and 16 . Fig. 13 is a longitudinal sectional view of the aerosol generating article 100 . Fig. 13 is a two-dimensional view, and therefore the curvature of the tubular shape of the fluid guide 400 and its components, such as tubular member 500&quot ;, cannot be seen in this embodiment. Looking at the entire end surface of the aerosol generating article 100 of this embodiment, the surface is round. Similarly, if one looks at the entire end surface of the tubular member 500 of this embodiment, the surface will be round.

The aerosol generating article 100 of FIG. 13 comprises four elements placed in coaxial alignment: at the distal end 103 a high resistance to draw (RTD) end plug 600 , a tubular member 500″ that contains the gel 124″ , a fluid guide 400″ , and a mouthpiece 170 at the proximal end 101″ . These four elements are placed in series and surrounded by a wrapper 110 to form an aerosol generating article 100 '. (In a similar but alternative embodiment, there is a cavity 140 between the fluid guide 400 and the tubular member 500. ) The aerosol generating article 100 has a proximal or mouthpiece end 101 and a distal end 103 located at the opposite end of the aerosol generating article 100 , relative to the near end 101 . Not all components of tubular member 500 are necessarily shown or labeled in FIG. 13 .

In use, a fluid, such as air, is drawn through the aerosol generating article 100 through apertures 150 (not shown, but similar to those described for the examples of FIGS. 1-10 ) while negative pressure is applied at the proximal end 101 .

An end plug 600 is located at the extreme distal end 103 of the aerosol generating product 100 .

In this example, the tubular member 500 is immediately downstream of the end cap 600 and is adjacent to the end cap 600 .

In FIG. 9, the distal end portion of the outer wrapper 110 of the aerosol generating article 100 is surrounded by a band of tipping paper (not shown).

As illustrated further in FIG. 14 , 15 and 16 , tubular member 500 is a cellulose acetate tube 122 containing gel 124 in the core, for example, the core is filled with gel 124 . In this example, gel 124 contains an active agent, the active agent being nicotine and an aerosol generating agent. Other examples, like this example, include different active substances or do not include any. Not all components of tubular member 500 of FIG. 14 , 15 and 16 are necessarily shown or labelled.

In FIG. 14 is a perspective view of the tubular member 500&lt ;/RTI> FIG. 15 is a cross-sectional view coplanar with the central axis of the tubular member 500 ", and FIG. 16 is a cross-sectional view perpendicular to the central axis. In FIG. 16 shows the end surface of tubular member 500 .

The tubular member 500 is located in the aerosol generating article 100 at the distal end 103 ( FIG. 13 ) of the aerosol generating article 100 such that the heating element of the aerosol generating device 200 can penetrate through the tubular member 500 , the heating element in this example penetrating through an end plug 600 (at the extreme distal end 103 of the aerosol generating article 100 ) for contact with the tubular member 500 that contains the gel 124 . Thus, the heating element is in contact with the gel 124 or in close proximity to the gel 124' .

The gel 124 contains an active agent that is released into a fluid, such as air, flowing from holes 150 along outer longitudinal passages (not shown) in the fluid guide 400 to the tubular member 500 near the distal end 103 and then to the proximal end 101 through an internal longitudinal passage 430 (not shown). In this illustrated example, the active substance is nicotine. Optionally, gel 124 further contains a flavoring agent, such as menthol.

The tubular element 500 may further contain a plasticizer.

The fluid guide 400 is immediately downstream of the tubular 500 and is adjacent to the tubular 500 . (In a similar but alternative specific example, such as in FIG. 24 , there is a cavity between the fluid guide 400 and the tubular member 500' , so that the fluid guide does not contact the tubular member). In use, the material released from the tubular 500' containing the gel 124 ' extends along the fluid guide 400 to the proximal end 101 of the aerosol generating article 100 '.

In the example of FIG. 13, the mouthpiece 170 is immediately downstream of the fluid guide 400 and adjacent to the fluid guide 400 . In the example of FIG. 13 Mouthpiece 170 contains a traditional CA extrusion filter with low filtration efficiency.

To assemble the aerosol generating article 100 , the four elements described above are aligned and wrapped in an outer wrap 110 . In FIG. 13 The outer wrapper is traditional cigarette paper.

The tubular member 500 may be formed by an extrusion process, such as illustrated in FIG. 17 . The CA 122 longitudinal side portions of the tubular member 500 may be formed by extruding the CA material along the die 184 and around the core 180 which protrudes backwards with respect to the direction T of movement of the extruded CA material. The rearward protrusion of the core 180 is formed like a pin and is a cylindrical piece having an outer diameter of 3 millimeters to 7 millimeters, with a length of 55 millimeters to 100 millimeters. (To aid explanation, this is not illustrated to scale in the figures).

The cellulose acetate material 122 in this example is thermoset under the influence of steam S, which is at a pressure of more than 1 bar.

The core 180 is provided with a channel 182 through which the gel 124 is extruded into the core of the cured cellulose acetate material 122 that forms the longitudinal side portions of the tubular member 500 in this example. In other examples, the CA material 122 is thermoset prior to extrusion of the gel 124 into the core of the CA material 122 .

The composite cylindrical rod is cut into segments to form separate tubular elements 500 .

The composite cylindrical rod is formed using the hot extrusion process in this example. The composite cylindrical rod is allowed to cool or is subjected to a cooling process prior to being cut into segments. Alternatively, in other examples, the composite cylindrical rod may be formed using a cold extrusion process.

In the illustrated tubulars 500 of this example, CA 122 is shown as longitudinal side portions of a core tubular 500 , with the core to be filled with gel 124' . However, alternatively, in other examples, the CA 122 longitudinal side portions may be any shape with a core (or more than one core) to accommodate gel 124 that extends generally along the tubular shaft. In alternative specific examples, the core is filled with a porous medium 125 filled with gel.

In the present example, the CA 122 longitudinal side portions of the tubular element have a minimum thickness of 0.6 millimeters.

During the manufacturing process illustrated in FIG. 17 , gel 124 is continuously extruded.

In an alternative example, as illustrated in FIG. 18 , gel 124 may be extruded in portions separated by gaps 128 as shown in FIG. 18 . In alternative specific examples, the gel-filled porous medium 125 is extruded in portions to provide separating gaps in the core of the tubular rod.

The gel 124 may be heated to a temperature above room temperature before being introduced into the core 180 . The core 180 may be thermally conductive (eg, a metal core) and some externally applied heat (eg, from steam S) is used to thermoset the CA. This can transfer thermal energy to the gel, and heating the gel can reduce its viscosity and make it easier to extrude.

In an alternative specific example, as illustrated in FIG. 19 , core 180 is configured to reduce the heat of gel 124 prior to extrusion. In some of these specific examples, core 180 is formed from a substantially thermally insulating material. Alternatively or additionally, core 180 is cooled, for example, by having a liquid-cooled sheath 186 (eg, water-cooled sheath) having a chilled liquid circulation layer forming a thermal barrier between externally applied heat (eg, steam S) and gel 124 . Maintaining the gel 124 at a low temperature can facilitate the formation of the gel 124 within the CA 122 longitudinal side portions of the tubular member 500 .

In this example, the tubular members 500 are formed by cutting at the gaps 128 of the composite rod, which helps to prevent gel 124' from fouling the cutting machinery, thereby improving cutting efficiency. The composite rod in this example is cooled before cutting during a dormant period until it reaches a suitable temperature for cutting. After cutting, the cut pieces have hollow ends when cut at gaps 128' , which in some examples are cut to form a tubular member, and prior to assembly into an aerosol generating article 100 '. Portions of gel 124 in this example are 60 millimeters long and are separated by gaps of 10 millimeters. In other examples, the hollow ends are not cut at both ends to create a cavity 140 between the gel 124 and the fluid guide 400 .

As an alternative to the examples illustrated herein, in specific examples, gel 124 may be extruded at room temperature. Also in alternatively specific examples, the cellulose acetate is replaced by other materials, such as polylactic acid.

In the embodiment of FIG. 19 , the core has a cylindrical shape to assist in the manufacture of a tubular member of a tubular shape.

In FIG. 20 illustrates a portion of an aerosol generating device 200 with a partially inserted aerosol generating article 100 as described above and illustrated in FIG. 13 .

The aerosol generating device 200 includes a heating element 230 . As shown in FIG. 20 , a heating element 230 is installed inside a chamber housing the aerosol generating article 100 of the aerosol generating device 200 . In use, the aerosol generating article 100 is inserted into the chamber containing the aerosol generating article of the aerosol generating device 200 , whereby the heating element 230 is inserted through the end cap 600 into the tubular member 500 of the aerosol generating article 100 as shown in FIG. 20 . In FIG. 20, the heating element 230 of the aerosol generating apparatus 200 is a heating plate.

The aerosol generating device 200 includes a power supply and electronics that enable the heating element 230 to be activated. Such activation may be performed manually or may occur automatically in response to the application of negative pressure at the proximal end of the aerosol generating article 100 inserted into the chamber containing the aerosol generating article of the aerosol generating device 200 . A plurality of gaps are provided in the aerosol generating device to allow air to flow into the aerosol generating article 100 ; the direction of the fluid, such as air, flowing into the aerosol generating device 200 is illustrated by the arrows in FIG. 20 . The fluid may then enter the aerosol generating article 100 through openings 150 that are not shown.

After the inner heating element 230 is inserted into the tubular element 500 of the aerosol generating product 100 and activated, the tubular element 500 containing the gel 124 containing the active substance is heated to a temperature of 375 degrees Celsius by the heating element 230 of the aerosol generating device 200 . At this temperature, the material from the tubular member 500 of the aerosol generating article 100 leaves the gel. When negative pressure is applied to the proximal end 101 of the aerosol generating article 100 , this material from the tubular member 500 is drawn further downstream through the aerosol generating article 100 , specifically drawn through the fluid guide 400 to the proximal end and out of the proximal end. 101 products 100 generating aerosol.

The aerosol passes further downstream through the aerosol generating article 100 , the temperature of the aerosol being reduced due to the transfer of thermal energy from the aerosol to the fluid guide 400 . In this example, when the aerosol enters the fluid guide 400 , the temperature of the aerosol is approximately 150 degrees Celsius. Due to the cooling inside the fluid guide 400 , the temperature of the aerosol at the outlet of the fluid guide 400 is 40 degrees Celsius. This results in the formation of aerosol droplets.

In the illustrated example of FIG. 20 tubular member 500 comprises CA forming the longitudinal side portions 122 of the cylindrical rod with gel 124 in the core or central portion of tubular member 500' . Alternatively, in other specific examples, the longitudinal side portions of the tubular member 500 may be of cardboard; corrugated paper such as corrugated heat-resistant paper or corrugated parchment paper; or a polymeric material such as low density polyethylene (LDPE).

In FIG. 14, 15, 16, tubular member 500 has a single core containing a single gel 124 ', core-filling gel 124' being surrounded by CA along the longitudinal sides of tubular member 500' . However, in alternative specific examples, the tubular element 500 contains more than one core. In specific embodiments, the implementation of the tubular element contains more than one gel 124 . Not all components of tubular member 500 of FIG. 14 , 15 and 16 are necessarily shown or labelled.

As illustrated in the example of FIG. 21 , the tubular 500 comprises a plurality of gels 524A , 524B extending along the axial length of the core of the tubular 500 as shown in cross section in FIG. 21 . The tubular member 500 in this embodiment of FIG. 21 contains CA longitudinal side parts 522 , 622 , 722 . Not all components of tubular member 500 are necessarily shown or labeled in the embodiment of FIG. 21 .

Multiple gels 524A , 524B can be extruded into CA 522 through separate channels in a core (not shown) that forms the core of tubular 500. The use of gels 124 with different degrees of volatility can simplify the optimization of active agent delivery.

In the example illustrated in FIG. 22 , the tubular member 500 includes CA longitudinal side portions 622 , with the tubular member 500 further comprising a plurality of cores 624A , 624B , 624C , as shown in cross section in FIG. 22 .

Not all components of tubular member 500 are necessarily shown or labeled in this embodiment of FIG. 22 .

In this particular example, several cores contain different gels 624A , 624B , 624C , the gels having different actives, eg different nicotine and flavor, as shown in FIG. 22 . The use of gels with different degrees of volatility can simplify the optimization of the delivery of the active ingredient, in particular delivery during the heating cycle of the aerosol generating device.

In other specific examples (not shown), multiple cores 624A , 624B , 624C each contain the same gel 124 (not shown). The use of multiple cores makes it easier to optimize the efficiency of air flow through tubular member 500 .

A plurality of cores may be formed by using a core (not shown) with a corresponding plurality of protrusions extending rearward with respect to the direction T of movement of the extruded CA material. The gel may be extruded through respective channels in the plurality of rearward extending protrusions of the core.

In FIG. 14, 15, 16 tubular element 500 contains cellulose acetate 122 longitudinal side parts filled with gel 124 in the core. However, alternatively, in specific examples, in combination with other features, the core of the tubular member 500 is only partially filled with gel 124 across a cross section perpendicular to the axial length. Advantageously, this facilitates the axial flow of air along the length of the tubular 500 . For example, as shown in FIG. 23 , gel 724 may be provided as a coating on the inner surface of the longitudinal sides of tubular 500 . Not all components of tubular member 500 are necessarily shown or labeled in the embodiment of FIG. 23 .

In this illustrated example, that is, the embodiment of FIG. 23 , tubular member 500 has a hollow channel 726 extending axially along its length due to the use of a core (not shown) with a central shaft extending further downstream from where gel 724 is extruded into the tube during manufacture to form a hollow channels within the extruded gel 724 .

Although in FIG. 20 illustrates an aerosol generating article 100 that is used with a plate heating element 230 of an aerosol generating device 200 , the tubular member 500 can alternatively be used in other aerosol generating articles 100 that are heated differently.

For example, in FIG. 24 illustrates a sectional view of an example of an aerosol generating article 100 which is suitable for induction heating as well as plate heating. In FIG. 24 illustrates an example of an aerosol generating article 100 suitable for use with a tubular element in accordance with the present invention. Fig. 24 is a sectional view of the aerosol generating tubular and its components, such as the tubular 500 ', and thus does not show the bending of the tubular molds. Not all components of tubular member 500 are necessarily shown or labeled in this FIG. 24 .

In FIG. 24, an example of aerosol generating article 100 comprises a mouthpiece 170 at proximal end 101 , fluid guide 400 , cavity 700 , tubular 500 , and end plug 600 in proximal to distal order. In this example, the tubular member 500 contains an active agent-containing gel 824 and further comprises a current collector (both not shown). The current collector in this example is a single aluminum strip that is centered along the longitudinal axis of the tubular member 500 . By inserting the distal end 103 of the aerosol generating article 100 into the aerosol generating device 200 (not shown), thus the part of the aerosol generating article 100 containing the tubular member 500 is positioned so as to be close to the induction heating elements 230 (not shown). shown) an aerosol generating device 200 (not shown). The electromagnetic radiation generated by the induction heating elements 230' is absorbed by the current collector and assists in heating the gel 824 in the tubular member 500 ', which in turn facilitates the release of material from the gel 824' , such as the active agent, entrained in the passing aerosol when negative pressure is applied at the proximal end 101 product 100 that generates an aerosol. Fluid, such as air, enters the outer longitudinal passages 834 through holes 150 (not shown) to be transferred to cavity 700 and then to tubular 500 where the fluid mixes with gel 824 and entraps actives before returning to the cavity and then through an internal longitudinal passage (not shown) of the fluid guide 400 before exiting at the proximal end 101' . In this example, the longitudinal side portions 822 of the tubular 500 contain paper. The aerosol generating article contains an outer wrap 850 . This aerosol generating product 100 as illustrated in FIG. 24 and as described can be used with an aerosol generating device 200 as illustrated in FIG. 1-2 and as described. Preferably, the aerosol generating article 100 of FIG. 16 is heated by induction from the aerosol generating device 200' .

The tubular member 500 may have numerous different combinations of, among others: gel 124' , gel-filled porous media 125' , active agent, internal longitudinal members, headspace filled with material (preferably porous), and wrap. The desired aerosol can be created by the particular combination and arrangement of its ingredients.

For example, as shown below.

In FIG. 25 illustrates an example in which the tubular member 500 comprises: a wrapper 110' ; a second tubular 115' , the second tubular 115 comprising a gel 124' , the second tubular 115 comprising a paper wrap, the second tubular being centrally located along the longitudinal axis of the tubular 500' ; a porous filler material 132 located between the second tubular element 115 and the wrap 110 . The porous filler material 132 helps to keep the second tubular element centered within the tubular element 500 . The gel 124 in this example is located inside the central part of the second tubular element 115 .

In FIG. 26 illustrates an example in which the tubular member 500 comprises: wrapper 110&quot ;; a second tubular 115' containing a gel 124' , the second tubular having a paper wrap, the second tubular being centered along the longitudinal axis of the tubular 500 '; gel 124 located between the second tubular element 115 and the wrapper 110 . The gel between the second tubular 115 and the wrap 110' helps to keep the second tubular 115 centered within the tubular 500' . The gel 124 in this example is located within the central portion of the second tubular 115 , as well as between the second tubular 115 and the wrap 110 .

In FIG. 27 illustrates an example in which the tubular member 500 includes: a wrapper 110' ; an inner longitudinal member containing the gel-filled porous media 125' , wherein the inner longitudinal member containing the gel-filled porous media 125' is centrally located along the longitudinal axis of the tubular member 500 '; gel 124 located between the inner longitudinal member containing the gel-filled porous medium 125 and the wrap 110 . The gel 124 can assist in holding the inner longitudinal member containing the gel-filled porous media 125' centrally within the tubular member 500' . In this example, the inner longitudinal member is cross-shaped in its longitudinal section, and portions of the inner longitudinal member are in contact with the inner surface of the wrap 110' . Other examples may use inner longitudinal members of other shapes and sizes and thus may not necessarily contact the inner surface of the wrap 110' . Other specific examples may also use internal longitudinal members of different materials.

In FIG. 28 illustrates an example in which the tubular member 500 comprises: a wrapper 110' ; a second tubular 115 ' containing a gel 124' , the second tubular 115 comprising a paper wrap, the second tubular being centered along the longitudinal axis of the tubular 500' ; porous medium 125 filled with gel, located between the second tubular element 115 and wrap 110 . In this example, the gel-filled porous medium 125 helps to keep the second tubular 115 centered within the tubular 500 .

In FIG. 29 illustrates an example in which the tubular member 500 comprises: a wrapper 110' ; porous medium 125 filled with gel; and gel 124 ; while the porous medium 125 filled with gel is adjacent to the inner surface of the wrapper 110 and surrounds the gel 124 . In this example, there is both a gel 124 and a porous medium 125 filled with gel. The gel-filled porous media 125 ' coats the inner surface of the wrap, although the gel-filled porous media 125 ' In this example, a gel filled porous medium 125 surrounds the gel 124 which is held centrally along the longitudinal axis of the tubular 500 . The gel-filled porous media can assist in holding the gel 124 along the central position.

In FIG. 30 illustrates an example in which the tubular member 500 comprises: a wrapper 110' ; a second tubular 115 ' containing a gel-filled porous medium 125' , the second tubular 115 comprising a paper wrap, the second tubular 115 being centrally located along the longitudinal axis of the tubular 500' ; porous filling material 132 located between the second tubular element 115 and the wrapper 110 . The porous filler material 132 helps to keep the second tubular element centered within the tubular element 500 . The gel-filled porous medium 125 in this example is located inside the central part of the second tubular element 115 . In this example, the paper wrap of the second tubular 115 surrounds a gel-filled porous medium.

In FIG. 31 illustrates an example in which the tubular member 500 comprises: a wrapper 110' ; a second tubular 115 ' containing a gel-filled porous medium 125' , the second tubular 115 being centrally located along the longitudinal axis of the tubular 500' , the second tubular further comprising a paper wrapper; porous medium 125 filled with gel, located between the second tubular element 115 and wrap 110 . In this example, the gel-filled porous media 125 is at two locations: inside the second tubular 115 and between the second tubular and the wrap 110 . They may have the same or different porous media, gel or active substance.

In FIG. 32 illustrates an example in which the tubular member 500 comprises: a wrapper 110&quot ; a second tubular element 115 ' containing a porous filling material 132' , the second tubular element 115 being centrally located along the longitudinal axis of the tubular element 500' , the second tubular element 115 further comprising a paper wrapper; porous medium 125 filled with gel, located between the second tubular element 115 and wrap 110 . The gel-filled porous medium may assist in holding the second tubular 115 centrally along the longitudinal axis of the tubular 500' . In this example, the gel-filled porous media 125 is adjacent to the inner surface of the wrap 110 . A porous medium 125 filled with gel coats the inner surface of the wrap 110 .

In FIG. 33 illustrates an example in which the tubular member 500 comprises: a wrapper 110' ; a second tubular element 115' containing a porous medium 125 filled with gel, the second tubular element 115 being centrally located along the longitudinal axis of the tubular element 500' , the second tubular element 115 further comprising a paper wrapper; gel 124 located between the second tubular element 115 and the wrapper 110 . In this example, the gel 124 may assist in holding the second tubular 115 centrally along the longitudinal axis of the tubular 500' . In this example, the gel 124 is adjacent to the inner surface of the wrap 110' . In this example, the gel-filled porous medium 125 is centered within the second tubular 115 surrounded by the paper wrap of the second tubulars 115 .

In FIG. 34 illustrates an example in which the tubular member 500 includes: a wrapper 110' ; an inner longitudinal member containing the gel-filled porous media 125' , wherein the inner longitudinal member containing the gel-filled porous media 125 ' is cylindrical and centrally located along the longitudinal axis of the tubular member 500' ; gel 124 located between the inner longitudinal member containing the gel-filled porous medium 125 and the wrap 110 . The gel 124 can assist in holding the inner longitudinal member containing the gel-filled porous media 125' centrally within the tubular member 500' . In this example, the inner longitudinal member is cylindrical in its longitudinal section and is held at a distance from the inner surface of the wrapper 110 by the gel 124' . Other examples may use internal longitudinal members of other shapes and sizes and other materials.

All scientific and technical terms used in this document have the meanings commonly used in the art, unless otherwise indicated. The definitions provided in this document are intended to facilitate understanding of certain terms commonly used in this document.

In the context of this description and the appended claims, the singular forms cover embodiments with reference to the plural, unless the content clearly implies otherwise.

In the context of this specification and the appended claims, the term “or” is generally used in its meaning, including “and/or”, unless the content clearly implies otherwise.

In the context of this document, the words "have", "having", "include", "including", "comprise", "comprising", or the like, are used in their broad sense and generally mean "including, but without limitation". It will be understood that the expressions "consisting essentially of", "consisting of", etc., fall into the category of "comprising", etc.

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

Any direction mentioned in this document, such as "top", "bottom", "left", "right", "top", "bottom", and other directions or orientations are described in this document for clarity and brevity and are not intended to limit the actual device or system. The devices and systems described herein may be used in a variety of directions and orientations.

The embodiments exemplified above are non-limiting. Those skilled in the art will appreciate other embodiments corresponding to the embodiments described above.

Examples

1. A tubular element, wherein the tubular element comprises a wrapper that forms a first longitudinal passage, the tubular element further comprising a gel, the gel containing an active agent.

2. Tubular element according to example 1, and it contains a second tubular element, and the second tubular element is located longitudinally inside the first longitudinal passage.

3. Tubular element according to example 2, and the longitudinal side of the second tubular element contains paper, or cardboard, or cellulose acetate.

4. The tubular element according to any one of examples 2 or 3, the second tubular element containing a gel.

5. The tubular element according to any one of examples 2, 3 or 4, wherein the gel is located between the second tubular element and the wrapper which forms the first longitudinal passage.

6. The tubular element according to Example 4 or 5, the tubular element further comprising a gel-filled porous medium interposed between the second tubular element and the wrapper which defines the first longitudinal passage.

7. Tubular element according to example 1, and the tubular element further comprises a longitudinal element located longitudinally within the first longitudinal passage.

8. A tubular element according to any of the previous examples, wherein the wrapper is strong.

9. Tubular element according to example 8, and the wrap is water resistant.

10. A tubular element according to any one of Examples 2-9, wherein the longitudinal side portion of the second tubular element is strong.

11. A tubular element according to any of the previous examples, the tubular element further comprising a current collector.

12. A tubular element according to any of the previous examples, the tubular element further comprising a thread.

13. A tubular element according to any of the previous examples, the tubular element further comprising sheet material.

14. An aerosol generating article comprising a tubular element according to any one of Examples 1-13.

15. Method for manufacturing a tubular element,

wherein the tubular element contains:

at least one longitudinal passage; and additionally contains a gel, and the gel contains the active substance;

wherein the method includes the steps:

placing material for the tubular element around a core that forms the tubular element; And

squeezing the gel out of the channel inside the core so that the gel is inside the tubular element.

Claims (30)

1. A tubular element for use with an aerosol generating article, comprising a wrapper that defines a first longitudinal passage; wherein the tubular element further comprises a gel; wherein said gel contains an active substance; wherein said wrapper contains paper; wherein said wrapper is waterproof; wherein the specified gel containing the active substance contains a substance for the formation of an aerosol; And wherein said active substance-containing gel contains from 60 percent to 95 percent by weight of glycerol, and wherein said gel has a viscosity of 10,000 to 1,000 pascals per second. 2. A tubular element according to claim 1, characterized in that the wrapper is hydrophobic. 3. A tubular element according to claim 2, characterized in that the wrapper contains hydrophobic groups covalently bonded to the inner surface of the wrapper. 4. A tubular element according to claim 2 or 3, characterized in that the wrapper contains hydrophobic groups covalently bound to the outer surface of the wrapper. 5. Tubular element according to any one of paragraphs. 2, 3 or 4, characterized in that the wrap has a Cobb water absorption value (in 60 seconds) of less than 40 grams per square meter. 6. A tubular element according to any one of the preceding claims, comprising a distal end and a proximal end, and wherein an end plug is located at the distal end of the tubular element. 7. A tubular element according to claim 6, characterized in that the end cap of the tubular element is fluid-tight. 8. Tubular element according to any one of the preceding claims, characterized in that the wrapper is strong. 9. A tubular element according to any one of the preceding claims, further comprising a susceptor. 10. Tubular element according to claim 9, characterized in that the susceptor is located longitudinally inside the tubular element. 11. Tubular element according to any one of paragraphs. 9 or 10, characterized in that the susceptor is adjacent to said gel. 12. Tubular element according to any one of the preceding paragraphs, further comprising sheet material. 13. A tubular element according to claim 12, characterized in that said sheet material is corrugated. 14. Product for generating aerosol, containing a tubular element according to any one of paragraphs. 1-13. 15. A method of manufacturing a tubular element for use with an aerosol generating article, wherein the tubular element contains: a wrapper that defines a first longitudinal passage and further comprises a gel; moreover, the specified gel contains the active substance; wherein the specified gel containing the active substance contains a substance for the formation of an aerosol; wherein said gel containing the active substance contains from 60 percent to 95 percent by weight of glycerol; wherein said gel has a viscosity of 10,000 to 1,000 pascals per second; wherein the wrapper further comprises paper; And said wrapper is waterproof; wherein the method includes the steps of: placing a waterproof wrapping material for the tubular element around the core that forms the tubular element; and extruding the gel from the channel inside the core so that the gel is inside the tubular element.

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