ES2334371T3 - ELECTRICALLY HEATED CIGARETTE INCLUDING CONTROLLED RELEASE AROMATIZING. - Google Patents

Abstract

Electrically heated cigarettes used in an electrical smoking system include a flavoring-release additive and sorbent effective to remove one or more gas-phase constituents of mainstream tobacco smoke. The flavoring-release additive includes at least one flavoring. The flavoring is released in the cigarette upon the flavoring-release additive reaching at least a minimum temperature during smoking. The flavoring-release additive can have various forms including, for example, beads, films and inclusion complexes. Electrical smoking systems including the electrically heated cigarettes, methods of making the cigarettes, and methods of smoking the cigarettes are also provided.

Description

Electrically heated cigarette that includes controlled release flavoring.

Background

Traditional cigarettes smoke lighting one end of a wrapped tobacco bar and vacuuming air mainly through the end turned on by suction, by One end of cigarette nozzle. The cigarettes Traditional smoke supplies as a result of combustion, during which the tobacco is burned at temperatures that exceed, typically, 800 ° C during a draft. Heat of combustion releases various gaseous and distilled combustion products from tobacco. As these gaseous products are aspired to through the cigarette, they cool and condense to form a spray, which provides the flavors and aromas associated with the smoking practice

Traditional cigarettes produce a smoke secondary current during flameless combustion between puffs Once lit, they are usually consumed in your whole or discarded. It is possible to light a cigarette again traditional, but not desirable for subjective reasons that include The taste, the taste and the smell.

An alternative to the more traditional cigarette is the electric ignition cigarette that is used in systems Electric for smoking. Compared to cigarettes traditional, electrical systems for smoking reduce significantly the secondary current smoke and allow, also, to smokers interrupt and restart the practice of Smoking as you wish. Electrical systems for smoking are disclosed, by way of example, in the documents US-A-6,026,820, US-A-5,988,176, US-A-5,915,387, US-A-5,692,526, US-A-5,692,525, US-A-5,666,976, US-A-5,499,636 and US-A-5,388,594. The systems Electric smoking include a powered lighter electrically and a cigarette that is electrically heated, the which has been made in a way that cooperates with the lighter. It is desirable that electrical systems for smoking be able to supply smoke in a manner similar to what the smoker experiences with traditional cigarettes, such as seeking an answer immediate (smoke supply occurs immediately after of an aspiration), a desired degree of contribution (which is in correlation with the amount of tar according to the FTC), a desired aspiration resistance (RTD - "resistance to draw "), as well as a consistency from one draft to another and from a cigarette to another.

Substances have been incorporated volatile flavorings to traditional cigarettes in order to add flavors and aromas to current tobacco smoke main and secondary current. See, for example, the US-A-3,006,347, US-A-3,236,244, US-A-3,344,796, US-A-3,426,011, US-A-3,972,335, US-A-4,715,390, US-A-5,137,034, US-A-5,144,964 and US-A-6,325,859, as well as the WO-A-01/80671. The added flavor substances volatilize, desirably, When the cigarette is smoked. However, the substances volatile flavorings tend to migrate inside the cigarette towards other components and possibly throughout the cigarette. Volatile flavoring substances may be lost or disposed of cigarettes during storage and distribution under usual conditions, before cigarettes are smoked The degree of migration of flavoring substances volatile in cigarettes depends on different factors, including the vapor pressure of the flavoring substance, the solubility of the flavoring substance in other components of the cigarette, and temperature and humidity conditions. Further, in traditional cigarettes, you can miss an important proportion of the flavoring substance in the current smoke high school.

The flavoring substances that have come incorporating into cigarettes can also deteriorate chemistry and / or physically by contact and / or by reaction with other components of the cigarette, as well as with the environmental environment. For example, it has been incorporating activated carbon in cigarettes traditional to eliminate gas phase constituents of smoke Mainstream However, flavoring substances that have been incorporated into cigarettes along with the activated carbon are adsorbed by activated carbon, clogging the pores of activated carbon and, consequently, deactivating activated carbon, thus decreasing its capacity to filter tobacco smoke.

For the above reasons, the substances flavorings that have been incorporated into cigarettes Traditional products were not supplied completely satisfactorily To the smoker Consequently, the flavoring substances that are have incorporated in some traditional cigarettes have not satisfactorily provided the desired taste effect to the smoker, and the desired value for flavoring substances in the subjective quality of the cigarette it has proved to be less than the desired one Due to the loss of flavoring substances, the uniformity of flavored cigarettes has not turned out to be All satisfactory. In addition, the sorption of substances flavoring by sorbents contained in cigarettes deactivated sorbents and therefore reduced their ability to extract the constituents in the gas phase of tobacco smoke.

Summary

In accordance with the invention, a electrically heated cigarette for an electrical system to smoking, which comprises: at least one sorbent; and an additive of release of flavoring substance, which includes at least one flavoring substance that can be released into the electrically heated cigarette, when the additive of release of flavoring substance up to at least one temperature minimum, such that the sorbent comprises curled paper or carbon crepe so that the carbon crepe paper is placed in a polypropylene sleeve or sleeve, which is arranged in an electrically heated cigarette filter. The flavoring substance is released into the cigarette of a controlled form during smoking. The substance flavoring preferably improves the characteristics subjective of the cigarette, while the sorbent maintains its ability to remove gaseous phase constituents from smoke Mainstream The sorbent and the flavoring substance are incorporated into the cigarette in a way that minimizes, preferably, the release and migration of the substance flavoring inside the cigarette before smoking, for example, in environmental conditions, and therefore minimizes the deactivation of the sorbent by the substance flavoring

A preferred embodiment of the cigarette electrically heated comprises at least one sorbent and additive  of release of flavoring substance, which includes one or more flavoring substances The flavoring substance is releasable inside the cigarette when the release additive is heated flavoring substance up to at least a minimum temperature, What happens during the action of smoking the cigarette.

The substance release additive flavoring can be incorporated in various ways within the electrically heated cigarette. In a preferred embodiment, the flavoring substance release additive comprises balls or beads. In another preferred embodiment, the additive of Release of flavoring substance is a film. In yet another preferred embodiment, the substance release additive flavoring is an inclusion complex that includes a molecule selected carrier or host, and the flavoring substance it consists of a host molecule within the complex of inclusion.

In another preferred embodiment, two or more different flavoring substance release additives, which they have different substance release temperatures flavoring, they are placed in different positions inside of an electrically heated cigarette, which reach different temperatures with respect to others. Release additives of flavoring substance may be located in positions of the electrically heated cigarette that reach the temperature of release of flavoring substance for those additives from release of flavoring substance. Accordingly, the flavoring substance release additive can provide an effective and controlled release of the flavoring substance during the smoking action

By providing the flavoring substance in the flavoring substance release additive that minimizes, from preference, release and / or migration of the substance flavoring until the substance release additive flavoring reaches the release temperature of the substance flavoring, it is substantially prevented, preferably, that the flavoring substance is absorbed by the sorbent and, therefore, this is deactivated by it, so it is not affected negatively to the ability of the sorbent to remove smoke from the mainstream tobacco constituents in the gas phase selected. In addition, because the flavoring substance is released by temperature inside the cigarette, it can be effectively supplied to a smoker in a way controlled during the suction or draft cycles of the cigarette.

A preferred embodiment of a system Electric smoking includes a lighter and at least one electrically heated cigarette, which includes at least one sorbent and a flavoring substance release additive.

A preferred embodiment of a method for manufacture an electrically heated cigarette, comprises incorporate a sorbent and a substance release additive flavoring inside an electrically heated cigarette.

Another embodiment refers to a cigarette electrically heated, which has a release additive of flavoring substance inside a tobacco grid or mesh, a sorbent disposed within a filter component, and a tobacco plug lacking substance release additive flavoring

Brief description of the drawings

Figure 1 illustrates a preferred embodiment of an electrically heated cigarette for use in a system electric for smoking, with the cigarette in a partially state disassembled

Figure 2 illustrates the heated cigarette electrically shown in Figure 1, in the state assembled, such that one of the ends of the cigarette is in contact with a stopper part of a powered lighter electrically, belonging to the electrical system for smoking.

Figure 3 illustrates a preferred embodiment of an electrical system for smoking, in which a heated cigarette electrically inserted inside the activated lighter electrically

Figure 4 illustrates the electrical system for smoking shown in Figure 4, in which the cigarette is He has extracted from the lighter.

Figure 5 illustrates a heater accessory of the electrical system for smoking.

Detailed description of preferred embodiments

The flavoring substance affects the taste, the taste and / or aroma of tobacco smoke. In one embodiment preferred, the flavoring substance is incorporated into the cigarette in a flavoring substance release additive which preferably minimizes the release and / or migration of the flavoring substance inside the cigarette, before smoking action Preferably, the flavoring substance is released from the flavoring substance release additive of a controlled way during the action of smoking the cigarette. He flavoring substance release additive allows the flavoring substance improve the subjective characteristics of the cigarette, while preventing an adverse impact on effectiveness of the sorbent when removing tobacco smoke from the mainstream gas phase constituents selected.

It has been determined that different areas of the electrically heated cigarette reach different temperatures when a smoker sucks or inhales in the cigarette. In a preferred embodiment, selectively arranged differently flavoring substance release additives in two or more electrically heated cigarette positions that reach, respectively, at least the minimum temperature at which the flavoring substance is released from the release additive of flavoring substance arranged in that position. When placing, selectively, one or more substance release additives flavoring inside the cigarette, the cigarette is capable of provide an effective and controlled release of the substance flavoring during the smoking action.

The substance release additive flavoring can have several constructions or structures and compositions, and may be located in one or more positions and / or have been incorporated into one or more components of the cigarette electrically heated Substance release additives flavoring may have been conceived so that they have different release temperatures of flavoring substance associated. Accordingly, the release additives of flavoring substance can be incorporated into the cigarette electrically heated, in positions that are most suitable to provide an effective release of the substance flavoring from the substance release additive concrete flavoring

By providing the flavoring substance in the flavoring substance release additive that minimizes, preferably, the release and / or migration of the substance flavoring inside the cigarette until the additive of release of flavoring substance reaches at least temperature minimum, it is substantially prevented, preferably, that the flavoring substance deactivate the sorbent. It can be preserved, from this way, the sorbent's ability to remove smoke from the mainstream tobacco constituents in the gas phase selected. Preferably, the release additive of flavoring substance makes it possible for the flavoring substance be supplied effectively to a smoker in a way controlled.

As used here, the term "sorption" denotes filtration by adsorption and / or by absorption. Sorption is intended to encompass interactions in the external surface of the sorbent, as well as interactions within the pores and channels of the sorbent. In other words, a "sorbent" is a substance that has the power to condense or retain molecules of other substances on its surface, and / or the ability to admit or capture other substances, namely by penetration of the other substances in its internal structure or in Your pores The term "sorbent", as used here, refers to either an adsorbent, an absorbent or a substance that can act as both an adsorbent and as a absorbent.

As used herein, the term "eliminate" refers to adsorption and / or absorption of at minus a part of a component of tobacco smoke from the mainstream.

The expression "mainstream smoke" includes the mixture of gases that circulates through the bar tobacco and that comes out through the end of the filter, that is, the amount of smoke that is emitted or aspirated from the end of the cigarette nozzle during the act of smoking the cigarette. He mainstream smoke contains air that is sucked into inside through the heated region of the cigarette and through of the paper wrapper.

The expression "molecular sieve", as used here, refers to a porous structure composed of a inorganic material and / or an organic material. Sieves Molecular include natural or synthetic materials. Sieves molecular molecules can sip molecules of certain dimensions at the same time that reject molecules of larger dimensions.

Figures 1 and 2 illustrate an embodiment preferred of the electrically heated cigarette 23. However, it should be understood that the electrically heated cigarette can have other settings suitable for smoking in a lighter electrically operated The electrically heated cigarette 23 comprises a tobacco bar 60 and a piece of nozzle or container of filter 62, joined together by counting paper 64. The tobacco bar 60 preferably includes a band or "mesh" of tobacco 66, folded with a tubular shape around a free flow filter 74 located at one end, and a Tobacco plug 80 at the other end.

An outer wrap 71 surrounds the mesh 66 with tobacco content and stays together or united throughout a longitudinal joint joint. The outer wrap 71 retains the 66 mesh in a wrapped or bundled state around the flow filter free 74 and tobacco plug 80.

The mesh 66 preferably comprises a base band 68 and a layer of tobacco material 70. The material of tobacco 70 may be located along the inner surface or from the outer surface of the baseband 68. At the end emboquillado of the tobacco bar 60, the mesh 66 and the wrapping outside 71 are wrapped or bundled around the filter plug free flow 74. Preferably, the tobacco plug 80 comprises a column of relatively short tobacco 82 filler tobacco cut, which is retained by a surrounding inner wrap 84.

There is an empty or hollow space between the filter free flow 74 and the tobacco plug 80. The hollow 90 consists of an unfilled portion of tobacco bar 60 and is in fluid communication with the tip 62 through the filter free flow 74.

Count 62 preferably comprises a free flow filter 92 located adjacent to tobacco bar 60, and a nozzle filter plug 94, located at the distal end, or further away, from the counter 62 from the tobacco bar 60. From Preferably, the free flow filter 92 is tubular and transmits air with a pressure drop or very small load loss.

The electrically heated cigarette 23 includes a filter 150. The filter 150 comprises a shaped sorbent of curled paper or carbon crepe and a sleeve or sheath of Polypropylene 154, which surrounds the crepe carbon paper. In the Figure 1, a free flow filter 74 is in contact (i.e. contacting butt) with a free flow filter 92, which is in contact (that is, contacting butt) with filter 150, which is in contact (i.e. contacting butt) with a plug nozzle filter 94. Alternatively, in Figure 2, the filter free flow 74 is in contact (i.e. contacting butt) with a solid segment 151, similar to filter plug 94 of nozzle, which is in contact (that is, by contacting stop) with filter 150, which is in contact (i.e. contacting butt) with the nozzle filter plug 94.

Cigarette 23 optionally includes the minus one row or row of perforations 12 adjacent to the end free 15 of cigarette 23. The perforations may have formed as slits 17, which preferably extend to through outer wrap 71 of mesh 66 and wrap interior 84.

In order to further improve the contribution, at least one row or row may have been formed additional perforations 14 comprising grooves 17 in a certain position along the tobacco plug 80. The perforations 12 or 14 may comprise a single row or a row double indentations 17. The number and extent of the indentations 17 can be selected to control the resistance to aspiration (RTD - "resistance to draw") along the side walls of cigarettes 23, as well as the contribution.

Holes may have been provided in the 66 mesh, covered by the outer wrap 71. The perforations 12, 14 can be used to approximate degrees of supply or contribution desired for cigarette 23, of such that holes 16 are used to adjust the supply with a lower effect on the RTD.

The cigarette 23 preferably has a substantially constant diameter throughout its length. The diameter of cigarette 23, just like the more traditional cigarettes, It is preferably between approximately 7.5 mm and 8.5 mm, such that the electrical system for smoking 21 provides a smoker a familiar "mouthfeel" during the action of smoking.

The tobacco column 82 comprises, preferably, a cut filling of a typical tobacco mixture, such as mixtures comprising blond, Burley and oriental tobacco, together with, optionally, reconstituted tobacco and other mixing components, including cigarette flavorings traditional.

The free flow filter 92 and the filter plug 94 of nozzle are preferably joined together in the form of cap combined with a cap wrap 101. The wrapper 101 of Cap is preferably a light weight plug wrapper and porous. The combined cap is fixed to the tobacco bar 60 by means of the embossing paper 64.

In addition to carbon crepe paper, the sorbent may include other sorbent materials, such as carbon activated. For example, the sorbent may include carbon granules. activated located in an empty or hollow space of the filter, or activated carbon particles loaded in a fibrous material or in paper. Activated carbon can occur in various forms that They include fiber particles, beads and the like. Activated carbon  it can have different porosity characteristics, such as a pore size and a total volume of the selected pores.

In another preferred embodiment, the sorbent includes one or more suitable molecular sieve sorbent materials.  Molecular sieve sorbents that can be used in the 23 electrically heated cigarette include one or more materials between zeolites, silicates meso-porous, aluminum phosphates, meso-porous aluminosilicates and other materials related porous, such as mixed oxide gels, although they are not limited by these; see document WO-A-01/80973.

In a preferred embodiment, the sorbent It includes one or more zeolites. Zeolites include aluminosilicates that have pores, such as channels and / or cavities of dimensions of A molecular size, uniforms. There are numerous structures of only known zeolites that have pores of different sizes and forms, which can significantly affect the properties of these materials as regards the processes of sorption and from separation. Molecules can be separated by zeolites through effects of size and shape related to the possible orientation of the molecules in the pores, and / or by the Differences in intensity of sorption. They can be used in the electrically heated cigarette 23 one or more zeolites that have  pores greater than one or more gas phase components selected from a gas that is desired to be filtered, such so that only the selected molecules that are what Small enough to pass through the pores of the molecular sieve material, are able to enter the cavities and be sipped in the zeolite.

The zeolite may consist of one or more of zeolite A, zeolite X, zeolite Y, zeolite K-G, ZK-5 zeolite, BETA zeolite, zeolite ZK-4 and ZSM-5 zeolite, although not It is limited by these. In a preferred embodiment, it is used ZSM-5 zeolite and / or BETA zeolite. The ZSM-5 is included in the classification family structural MFI and is represented by crystalline chemical data [Na_ {n} (Al_ {n} Si_ {96-n} O_ {192}) \ sim16H_ {2} O,  with n <27, orthorhombic, Pn-ma], while BETA zeolite is in the classification family structural BEA and is represented by crystalline chemical data [Na_ {7} (Al_ {Si} {57} {128}), tetragonal, P4_ {1} 22]. These two zeolites are thermostable at temperatures of up to approximately 800 ° C, which allows them to be incorporated into cigarette filters and / or tobacco cigarette bar electrically heated 23.

In another preferred embodiment, a material sorbent incorporated in the electrically heated cigarette 23 It has a composite composition. Such sorbent material comprises, for example, activated carbon and one or more screening materials molecular, such as those described above. By For example, sorbent fibers can be impregnated with at least a sorbent

Molecular sieves can be used micro-porous, meso-porous and / or macro-porous in heated cigarette electrically 23, depending on the desired component (s) desired remove from mainstream tobacco smoke.

The sorbent material can be incorporated into one or more positions of the electrically heated cigarette 23. For example, the sorbent can be placed in the passageway of the filter free flow tubular 74, in the free flow filter 92 and / or in the empty space 90. The sorbent may, additionally or alternatively, be incorporated in tobacco plug 80.

The amount of sorbent used in the preferred embodiments of the electrically heated cigarette 23 depends on the amount of constituents in the gas phase selected that is present in tobacco smoke and in the amount of constituents that you want to remove from the smoke of the tobacco.

As described above, the electrically heated cigarette 23 also comprises at least a flavoring substance release additive. The substance flavoring may consist, for example, of one or more substances flavorings that include menthol, mint, such as peppermint and Spearmint, chocolate, licorice, citron and other flavoring fruit, gamma-octalactone, vanillin, ethyl vanillin, breath fresheners, breath fresheners spices, such as cinnamon, methyl salicylate, linalool, bergamot oil, geranium oil, lemon oil, ginger oil and tobacco flavoring, although it is not limited by these. In a preferred embodiment, the substance flavoring is menthol and, optionally, at least one substance mint flavoring.

As described above, the flavoring substance release additive may have different structures and compositions in the heated cigarette electrically In a preferred embodiment, the additive of release of flavoring substance comes in the form of balls or accounts. The beads encapsulate, preferably, the substance flavoring and make possible the controlled release of the flavoring substance inside the cigarette during the cycles of drag.

The accounts preferably comprise less an encapsulation material and at least one substance flavoring The encapsulation material comprises, preferably, a binding agent or binder, which can consist, for example, of one or more of palm oil, rubber of glucomannan, xylitol, zein, hydroxypropylcellulose, sorbitol, maltitol and hydroxypropyl methylcellulose. They can also be added in the accounts, optionally, other materials known in the technique that can improve the formation characteristics of Beads of the encapsulated material or improve its stability. In a preferred embodiment, the beads have a composition substantially homogeneous in which the flavoring substance is distributed substantially uniformly. Thanks to such structure, the flavoring substance can be released from the accounts in a more uniform way during the act of smoking.

It can be adjusted, depending on the composition of accounts, the minimum temperature at which accounts release the flavoring substance. Accounts that comprise one or more of the binder agents described above have, preferably, a minimum temperature at which the substance flavoring is released at least about 40 ° C, such as between about 40 ° C and about 150 ° C. The bills protect the flavoring substance from exposure to substances unwanted atmosphere (for example, ambient air, in the inside a package) and unwanted substances contained in the cigarette, and minimize, preferably, the release and / or the migration of the flavoring substance until the additive of release of flavoring substance has been heated to a sufficiently high temperature during smoking the cigarette. Consequently, it is substantially prevented from preference, that the flavoring substance migrates inside the cigarette and react with other substances contained in the inside the cigarette or with ambient air, and deactivate the sorbent present in the cigarette.

Accounts can have any form desired, such as different regular and irregular shapes, including round, square, rectangular, oval, other shapes polygonal, cylindrical, fibrous, and similar shapes. The bills They can have different sizes. Preferably, the accounts are micro-accounts that have a particle size maximum of less than about 25 microns and, more preferably, less than about 1 micron. The reduction of the size of the accounts can provide a more homogeneous and controlled release  of flavoring substance, by providing a surface area Increased accounts.

The accounts can be manufactured by means of any appropriate procedure that produces accounts that have the desired structure, composition and size. For example, the accounts they can be manufactured by extrusion, by spray drying, by coating or by any other suitable procedures. In a preferred embodiment, the accounts are formed by the formation of a solution, dispersion or emulsion containing a binding agent or binder, a flavoring substance and optional additives to form accounts, which can be isolated and dried In the document US-A-6,325,859 are described procedures for preparing accounts that contain an ingredient active, such as a fragrance.

The electrically heated cigarette 23 preferably comprises a quantity of accounts that provides a desired amount of the flavoring substance in the cigarette inside. In a preferred embodiment, the electrically heated cigarette comprises, in relation to the total weight of tobacco in the cigarette, up to approximately 20%, and, more preferably, between about 10% and approximately 15% of the accounts. For example, a cigarette containing 100 mg of tobacco preferably contains up to approximately 20 mg of accounts. The accounts may comprise, of preference, up to about 20% substance flavoring The cigarette can comprise, for example, from about 1 mg to about 15 mg of substance flavoring

In a preferred embodiment, the accounts are arranged in at least one position of the heated cigarette electrically 23 that reaches at least the minimum temperature at that the flavoring substance is released from the accounts at Cigarette inside during smoking action. For example, the beads may be arranged in tobacco bar 60, in the empty space 90 between the tobacco plug 80 and the flow filter free 74, on one or more surfaces of the free flow filter 74, in or within the mesh 66, and / or in or inside the inner wrap 84 surrounding the tobacco plug 80.

In another preferred embodiment, it is possible incorporate different account compositions that have two or more minimum flavoring substance release temperatures different, in two or more positions of a heated cigarette electrically that it reaches different temperatures in such positions, during the smoking action. For example, the accounts that have a first substance release temperature flavoring can be located in a first position of the cigarette that reaches the first release temperature of flavoring substance, and the accounts that present a second release temperature of flavoring substance that is higher that the first release temperature of flavoring substance, they can be located in a second position of the cigarette that reaches the second substance release temperature flavoring For example, the two release temperatures of flavoring substance may vary by up to approximately 100 ° C For example, these two temperatures may vary by up to approximately 10ºC, 20ºC, 30ºC, 40ºC, 50ºC, 60ºC, 70ºC, 80ºC, 90 ° C or 100 ° C.

In another preferred embodiment, the additive of Release of flavoring substance includes a film. The film encapsulates, preferably, the flavoring substance and makes the controlled temperature release of the substance possible flavoring inside the cigarette during the act of smoking. In a preferred embodiment, the film comprises up to 20% by weight, and, more preferably, between about 10% and approximately 15% of the flavoring substance. In a preferred embodiment, the film encapsulates menthol and, optionally, also mint.

The substance release additive Flavorant of the film type preferably comprises less an encapsulation material and at least one substance flavoring The encapsulation material preferably comprises  a binding agent or binder that can be, for example, one or more among carrageenan, gelatin, agar, gum gelano, gum arabic, guar gum, xanthan gum and pectin. Other materials may optionally be added to the film known in the art that can improve the characteristics of film formation of the encapsulated material or improve its stability. In a preferred embodiment, the film has a substantially homogeneous composition in which the substance flavoring is distributed substantially homogeneously. By means of such structure, the flavoring substance can be released from the film in a more desirable manner during the smoking act The film encapsulation material provides a barrier to the release of the flavoring substance.

Depending on the composition of the movie, it is possible to set the minimum temperature at which the film releases the flavoring substance. A movie that includes one or more of the binding agents described above have, preferably, a minimum temperature at which the flavoring substance of at least about 50 ° C, and such as up to about 120 ° C. The film protects the substance flavoring of its exposure to unwanted substances within the cigarette and to the atmosphere, and substantially prevents the flavoring substance is released until the film is heats to the release temperature of flavoring substance during the action of smoking the cigarette.

The film can be applied to one or more components of the electrically heated cigarette in the form of a liquid coating, which dries to a film. The dimensions of the dried film are not limited. Preferably, the dried film has a maximum thickness of between about 50 microns and about 150 microns, and, more preferably, about 75 microns.

The film can be manufactured by any proper procedure that produces a film that has the structure, composition and desired dimensions. For example, the film can be applied by a coating procedure, such as a spray coating, a process of immersion, electrostatic deposition, one application per wheel printing, one print per print, one jet application of ink and similar procedures. In a preferred embodiment, an emulsion, suspension or slime comprising the agent is prepared binder, flavoring substance and optional additives, and it then apply as a coating on one or more selected surfaces of one or more components selected from electrically heated cigarette. The lining is, preferably, dried to remove water and / or other solvents and form a solid film that has the desired dimensions. Be described in the document US-A-3,006,347 and in document US-A-4,715,390, owned by common or shared, exemplary procedures that can be used to prepare movies.

The electrically heated cigarette 23 preferably comprises an amount of the releasing film a desired amount of the flavoring substance during the act of smoking the cigarette In a preferred embodiment, the cigarette electrically heated comprises, in relation to the total weight of tobacco in the cigarette in which the film is applied, until approximately 20%, and, more preferably, between approximately 10% and 15% of the film. For example, if the film is applied to the mesh, the weight of the tobacco contained in the mesh preferably constitutes the basis or weight reference for The amount of the movie. If the film is applied to the mesh and at the tobacco stopper, the total weight of the tobacco contained in the mesh and of the tobacco stopper is preferably the reference of weight for the amount of film that is applied on the cigarette. Preferably, the weight of tobacco contained in the mesh is the weight base or reference for the amount of film that is applied to the mesh, and the weight of tobacco contained in the tobacco plug constitutes the weight reference for the amount of film applied to the tobacco plug. In a preferred embodiment, the cigarette can comprise from about 1 mg to approximately 15 mg of flavoring substance.

In a preferred embodiment, the film is arranged in at least one position of the heated cigarette electronically 23 that reaches at least the temperature of release of flavoring substance. For example, the movie may be arranged in the tobacco plug 80, in the wrapper inside 84 surrounding tobacco plug 80, in mesh 66 and / or in the outer wrap 71 surrounding the mesh. When the movie It is arranged in the inner wrapper 84 and / or in the wrapper outer 71, the weight of inner wrap 84 and / or wrap outer 71 is the reference weight for the amount of the movie. In another preferred embodiment, the film may have preformed, crushed and incorporated in tobacco plug 80 and / or in other selected positions that reach the temperature of release of flavoring substance.

In another preferred embodiment, it is possible incorporate different flavored films that have two or more minimum flavoring substance release temperatures different, in different positions of a heated cigarette electrically, in such a way that when smoking the cigarette, the temperatures in different positions exceed temperatures minimum release of the different films.

In another preferred embodiment, the additive of Release of flavoring substance is an inclusion complex. The inclusion complex comprises a "host molecule" or carrier, and the flavoring substance is the "molecule host "contained in the inclusion complex. The complex of inclusion makes the controlled release of the substance possible flavoring inside the cigarette during the smoking action. In a preferred embodiment, the flavoring substance is a lipophilic or fat-related organic flavoring substance, which it is preferably concentrated within a hydrophobic cavity of the host molecule. Suitable flavoring substances comprise menthol, mint, such as peppermint and spearmint, chocolate, licorice, citron and other fruit flavoring, gamma-octalactone, vanillin, ethyl vanillin, breath fresheners, breath fresheners spices, such as cinnamon, methyl salicylate, linalool, bergamot oil, geranium oil, lemon oil, ginger oil and tobacco flavoring, although they are not limited by these. In a preferred embodiment, the substance Flavoring includes vanillin and gamma octalactone. In a preferred embodiment, the inclusion complex comprises, by weight, up to about 20%, and, more preferably, between approximately 10% and 15% of the flavoring substance.

The host molecule of the inclusion complex It is preferably a cyclodextrin. The cyclodextrins are cyclic oligosaccharides that include sub-units of glucopyranose, as described, for example, in the document US-A-3,426,011 and in the document of common property US-A-5,144,964.

The inclusion complex is formed when mix a flavoring material with a cyclodextrin in solution selected The flavoring substance lies inside the cyclodextrin ring structure. Cyclodextrins and flavoring substances are typically co-precipitated, filtered and dried.

Alpha-cyclodextrin, the beta-cyclodextrin and the gamma-cyclodextrin include, respectively, six, seven and eight sub-units of glucopiranose. In a preferred embodiment, the inclusion complex comprises beta-cyclodextrin, which can be accommodated, desirably, in a wide variety of host molecules and Find easily available. The beta-cyclodextrin has a ring structure of the sub-units linked with a configuration in three-dimensional bull that includes a hydrophobic cavity with a diameter of 7.5 Å and upper and lower edges hydrophilic

The minimum temperature at which the complex of inclusion comprising cyclodextrin releases the substance flavoring is preferably at least about 60 ° C, such as between about 60 ° C and about 125 ° C. To the incorporate the flavoring substance in the inclusion complex, the flavoring substance may be protected from exposure to unwanted substances inside the cigarette, and release in the atmosphere and / or the migration of the flavoring substance is, preferably minimized until the release additive of flavoring substance is heated to the release temperature of flavoring substance during the act of smoking the cigarette.

The inclusion complex is preferably given in powder form The powder preferably has a size maximum of less than approximately 200 microns.

The inclusion complex can be made by forming an aqueous solution of beta-cyclodextrin and the flavoring substance The inclusion complex can be recovered from the solution in powder form. However, the solution can be applied directly in one or more positions selected from one or more components of the heated cigarette electrically, by any suitable procedure. The dust of inclusion complex can alternatively be used to form a solution or a suspension. The inclusion complex can applied by a coating procedure, such as by slime coating, sprayed, by immersion procedure, an electrostatic deposition, one application per wheel of printing, a print by engraving, a jet application of Ink and similar procedures. In a preferred embodiment, prepare a solution, suspension or slime comprising the cyclodextrin and flavoring substance, and applied as coating on selected component surfaces Selected from the electrically heated cigarette. Procedures provided by way of example that may be used to apply the inclusion complex in the cigarette electrically heated, the document is described US-A-5,144,964, owned by common.

The electrically heated cigarette 23 preferably comprises an amount of the inclusion complex which provides a desired amount of the flavoring substance Inside the cigarette In a preferred embodiment, the cigarette electrically heated comprises, with reference to the weight of the outer or mesh wrap, up to about 15%, and, more preferably, less than about 8%, of the complex of inclusion For example, if the inclusion complex is applied in the mesh, then the weight of the mesh is preferably the weight reference for the amount of inclusion complex that is Apply on the mesh. If the inclusion complex is applied in the mesh and in the outer wrapping, then the total weight of the mesh and outer wrap preferably constitute the reference weight for the amount of inclusion complex applied to the mesh and outer wrap. Weight percentage of the inclusion complex that is applied in the mesh and / or in the outer wrap can be the same or different. In a preferred embodiment, the cigarette comprises about 1 mg to about 50 mg of flavoring substance.

In a preferred embodiment, the complex of inclusion is arranged in at least one position of the cigarette electrically heated 23 that reaches at least the temperature minimum for which the flavoring substance is released from inclusion complex inside the cigarette during the act of smoke. For example, the inclusion complex may be arranged in the inner wrap 84, in the 66 mesh and / or in the wrap exterior 71.

In another preferred embodiment, the cigarette electrically heated comprises two or more different types of flavoring substance release additives, for example, a account and a movie and / or an inclusion complex, in such a way that each flavoring substance release additive has a release temperature of different flavoring substance. The different flavoring substance release additives may be incorporated into two or more positions of the same cigarette electrically heated reaching different temperatures during the smoking action, in order to provide a release additional controlled flavoring substance during the act of smoking.

Figures 3 and 4 illustrate an embodiment preferred of an electrical system for smoking in which they can preferred embodiments of the heated cigarette be used electrically It must be understood, however, that it is possible use preferred embodiments of the heated cigarette electrically in electrical systems for smoking that have other constructions or structures, such as those that present Different electrically activated lighter structures. He 21 electric smoking system includes a heated cigarette electrically 23 and a reusable lighter 25. The cigarette 23 it has been built to be inserted into a cigarette receiver 27 and extracted from it, which is open by an end portion 29 front of the lighter 25. Once the cigarette 23 is inserted, the smoking system 21 is used in a similar way to that of a more traditional cigarette, but without lighting or burning without flame the cigarette 23. The cigarette 23 is discarded after being smoked

Preferably, each cigarette 23 provides a total of at least eight puffs (puff cycles) for each smoking practice However, cigarette 23 may have constructed in a way that provides a smaller or larger total number of openings available.

The lighter 25 includes a housing 31 that it has a front and rear housing portions 33 and 35, respectively. A power source 35a, such as one or more batteries, is located inside the rear housing portion 35 and supplies power to heater accessory 39. The accessory heater 39 includes a plurality of heating elements 37 (Figure 5) resistant to electricity. The elements of heating 37 are disposed within the portion of front housing 33 to slidably receive the cigarette 23. A stop 183 located in the heating accessory 39 defines a terminal end of the cigarette receiver 27 (Figure 2).

Control circuits 41 located in the front housing portion 33 selectively establish a electrical communication between power source 35a and one or more of heating elements 37 during each cycle of drag.

The rear housing portion 35 of the accommodation 31 has been built to be open and closed with the in order to facilitate the replacement of the power source 35a. Preferably, the front housing portion 33 is fixed removably to the rear housing portion 35 through of a mechanical coupling.

Referring to Figure 4, in a preferred embodiment, control circuits 41 are activated by a sensor 45 actuated by draft, which is sensitive to any changes in pressure or changes in flow rate of air that occur at the start of a cigarette aspiration 23 by a smoker. The sensor 45 driven by draft is preferably located within the housing portion front 33 of the lighter 25 and communicates with a space located inside heater accessory 39, by means of a port 45a extending through a side wall portion 182 of the heater accessory 39. Once activated by sensor 45, the control circuits 41 direct electrical current to an appropriate one of the heating elements 37.

In a preferred embodiment, it has been provided an indicator 51 in a position along the exterior of the lighter 25 in order to visually indicate the number of puffs left on cigarette 23, or other Selected information Indicator 51 preferably includes a liquid crystal visual presentation device. In a preferred embodiment, indicator 51 visually presents a selected image when a cigarette detector 57 detects the presence of a cigarette in the heater accessory 39. The detector 57 may comprise any arrangement that detects the presence of an electrically heated cigarette. For example, the detector may comprise an inductive coil 1102, adjacent to the cigarette receiver 27 of heater accessory 39, and about electrical contacts 1104 that bring the coil 1102 into communication with an oscillator circuit located within the circuits of control 41. In that case, cigarette 23 may include an element metallic (not shown) that may affect the inductance of the coil winding 1101 in such a way that whenever insert a suitable cigarette 23 into receiver 27, detector 57 generate a signal for circuits 41 indicating the presence of cigarette. Control circuits 41 provide a signal to the indicator 51. When cigarette 23 is removed from lighter 25, cigarette detector 23 no longer detects the presence of a cigarette 23 and indicator 51 goes out.

The heater accessory 39 supports a cigarette inserted 23 in a fixed position relationship with respect to heating elements 37, such that the elements of heating 37 are located along said cigarette 23 approximately in the same position for each cigarette again inserted 23. In a preferred embodiment, the heater accessory 39 includes eight heating elements 37 parallel to each other, the which are concentrically arranged around the axis of symmetry of cigarette receiver 27. Reference is made here to the position in which each heating element 37 touches a fully inserted cigarette 23, such as heater footprint or carbonization zone 42.

As shown in Figure 5, the elements of heating 37 preferably include each of them, when minus a first and second serpentine elongated members 53a and 53b, joined by a tip 54. The heating portions 53a, 53b and 54 form a heating sheet 120. Tips 54 are adjacent to openings 55 of the cigarette receiver 27. The extremes opposite 56a and 56b of each heating element 37 are electrically connected to the opposite poles of the source of power 35a as set selectively by the controller 41. A path or step is established through each heating element 37, respectively, through a pin terminal 104, a connection 121 between pin 104 and a portion of free end 56a of one of the meandering members 53a, to through at least a portion of tip 54, towards the other meandering member 53b and its end portion 56b. Preferably, a connection ring 110 provides a connection common electrical with each of the end portions 56b. In a preferred embodiment, ring 110 is connected to the terminal positive of the power source 35a through a connection between  the ring 110 and a pin 105.

Preferably, the heating elements 37 are individually powered with energy by the source of power 35a under the control of the control circuits 41, in order of heating cigarette 23, preferably eight times in positions spaced around the periphery of the cigarette 23. The warming provides eight puffs to cigarette 23, as get as usual by smoking a more traditional cigarette. It may be preferred to activate more than one heating element simultaneously for one or more puffs, or for all of them.

Heater accessory 39 includes a port 1200 air inlet through which air is sucked into lighter inside. A pressure drop or loss of charge with the air intake in the lighter, so that the draft sensor 45 can function to recognize the onset of a drag. The range of induced pressure drops is select so that it is within the range of pressure drops that can be detected by the sensor pressure 45.

The length of the tobacco plug 80 and its position relative along the tobacco bar 60 are selected, preferably, based on the structure and location of the heating elements 37 of the electrical system for smoking 21. When a cigarette 23 is correctly placed against a stop 183 (Figure 2) inside the system lighter Electric smoking, a portion of each heating element contact tobacco bar 60. Reference is made to this region of contact as footprint 95 of heater, which is the region of the tobacco bar 60 in which the heating element 37 is expected to reach a temperature high enough to allow smoking the cigarette without combustion of paper, mesh or cigarette tobacco. The 95 footprint of heater can be consistently located along the bar of tobacco 60, at the same predetermined distance 96 with respect to free end 78 of tobacco bar 60 for each cigarette 23 which is completely inserted into the lighter 25.

Preferably, the length of the tobacco plug 80 of cigarette 23, the length of the footprint 95 of heater and the distance between heater footprint 95 and stop 182 is selected in such a way that the heater footprint 95 is extends beyond tobacco plug 80 and overlaps a portion of the gap 91 at a distance 98. It is also made reference to distance 98 as the "overlap of heater-hollow "98. Reference is made to the distance over which the rest of footprint 95 overlaps heater to tobacco plug 80 as the "overlapping of heater-fill "99.

The length of the hole 91 and the tobacco bar 80, as well as the distribution of the drilling holes, can be adjusted to adjust the smoking characteristics of the cigarette 23, including adjustments in your taste, aspiration and contribution or supply The configuration or pattern of holes 263, the gap length 90 and the magnitude of the overlap of heater-padding 99 (and overlapping heater-hole 98) can also be handled to adjust the immediacy of the response, in order to favor the Consistency in supply.

Electrically heated cigarettes according to preferred embodiments may provide certain advantages. By encapsulating one or more added flavoring substances, especially volatile flavoring substances,
the flavoring substance (s) can be retained in the cigarette until it is smoked. In addition, the flavoring substance is preferably released by temperature in a controlled manner during the act of smoking, whereby an improved subjective characteristic of the cigarette is provided to the smoker. Since the flavoring substance can be retained in the flavoring substance release additive until the cigarette is smoked, deactivation of the sorbent contained in the cigarette is preferably minimized. Consequently, the sorbent maintains its ability to remove the gaseous constituents selected from the mainstream smoke.

The polypropylene sheath prevents migration in the cigarette of volatile flavoring substances and the consequent deactivation of the sorbent while cigarettes are They are stored in a pack of cigarettes. If the role of carbon is located inside a cellulose acetate tube, the level or degree of carbon activity could be degraded as consequence of the adsorption of triacitin by carbon. Paper carbon is available in the Schweitzer-Mauduit, and plugs can be obtained from filter comprising a polypropylene and paper sleeve or sleeve of carbon in the Filtrona. Electrically heated cigarettes containing a sorbent comprising carbon crepe paper inside a polypropylene sheath, located inside a cigarette filter, exhibit a desirable RTD.

In one embodiment, the release additive of flavoring substance is located within the tobacco mesh surrounding the tobacco plug. The tobacco plug lacks, preferably, substance release additive flavoring, which allows the manufacture of the cigarette with the same mixture of tobacco in the tobacco stopper, either for menthol or non-menthol cigarettes. The fact of having the aromatizer within the tobacco mesh provides, preferably a more efficient supply or contribution of the aromatizers during the act of smoking, as well as a supply more immediately of the aromatizers during the beginning of a puff. As explained in the document US-A-5,692,525, owned by common or joint, the length of the tobacco plug, the hole and the heater-fill overlap can be adjusted to provide a desired taste, aspiration and contribution, as well as immediacy of response and / or consistency of the contribution.

The encapsulation and the placement of aromatizers within the matrix of the tobacco mesh also reduce the tendency of volatile aromatizers such as menthol to migrate from the tobacco bar into the carrier portion of carbon filter Accordingly, the degree of activity of the carbon has improved shelf life as well as the maintenance of its activity level.

The menthol flavoring substance is preferably, in the form of a powder sensitive to temperature, such as a multi-stage dried powder (MSD - "multi-stage dried"). With the use of materials additives in the form of temperature sensitive powders, such as MSD powders, additive materials can be stored with some reduced migration properties and can be released so controlled with the application of a stimulus mechanism Default, such as heat. Thus, additive materials contained in temperature sensitive powders, such as MSD powder, may have reduced degrees of evaporation and of migration over time within the smoking article, due to the properties provided thanks to the use of sensitive powder at the temperature Menthol containing powders can be obtained suitable at Mane S.A., located in Le Bar Sur Loup, France. In an MSD procedure, materials are generally formed spray drying additives, fluid bed drying and / or drying in multi-stage tape, in order to form MSD powder. To the in order to preserve the effectiveness of the additive materials, the drying is completed at low temperature, so that the temperature It is effective for drying but does not damage the additive materials that are They are drying up. For example, if the MSD powder contains an agent flavoring, then the drying temperatures that are used for the manufacture of the MSD powder they are below the volatilization temperature of the flavoring agent. For example, MSD powder containing flavoring agents can be dried in multiple stages at temperatures such as between 20 ° C and 50 ° C, between 50ºC and 100ºC, between 100ºC and 150ºC, or between 150ºC and 200ºC.

Also, in case drying is used by sprayed, for example, additive materials can be atomized from a liquid supplied in the form of a spray of droplets, such that the droplets can be put in contact with a drying air at a first temperature in a process chamber in order to extract moisture. Then, the droplets can be dried further in an air heat at a second temperature to form dust sensitive to drying temperature Preferably, the second temperature is colder than the first temperature, but it's still enough Warm to provide effective drying properties. By example, an additive material, such as menthol with a temperature of volatilization around 120ºC (250ºF), can be sprayed on a substrate and then impersonate a dryer tunnel to 90ºC (200ºF) to eliminate most of the liquid, and can then be dried with air at room temperature to form a temperature sensitive final powder.

Since the powder is temperature sensitive, the powder contains and reduces the migration of the additive material until a temperature change occurs, such as when applied hot. For example, an additive material may be used. flavoring in a temperature sensitive powder, within a cigarette, for encapsulation and / or agent isolation flavoring with respect to other parts of the cigarette, such as a sorbent, until a sufficient amount of heat is applied to release the flavoring agent from the powder sensitive to the temperature.

Consequently, dust sensitive to temperature can be used effectively in smoking articles which include sorbents and in which, otherwise, the materials Additives would be sipped by sorbents. The use of dust temperature sensitive allows additive materials to be released while smoking a cigarette while not being released during storage, and also makes it possible for materials  additives modify the properties of smoke obtained from cigarette.

The use of additive materials, such as aromatizers, in temperature sensitive powders, such as MSD powders, in a smoking article provides advantages, in in particular, for cigarettes containing sorbents. Thank you to the use of temperature sensitive powders, such as MSD powders, in cigarettes containing sorbents, are prevented substantially the sorption of the additive materials in the temperature sensitive powders and a release is provided controlled additive materials.

For explanatory purposes, the expression "MSD powder" to describe dust sensitive to temperature, even if any dust is contemplated here temperature sensitive that is able to release so controlled additive materials. However, it is also noted that the MSD powder is a preferred temperature sensitive powder due to its ease of manufacture and its consistency.

The expression "temperature sensitive" is use here in reference to a response controlled by the temperature by a powder. For example, as used here, a temperature sensitive powder containing materials additives releases the additive materials when a predetermined amount of heat to release from sensitive powder to The temperature properties of the additive.

The expressions "arranged so releasable "or" controllable released "are used here in reference to containment and controlled release of the properties of the additive materials of its powdered form MSD In the MSD powder form, the additive materials are sufficiently contained or confined to prevent or substantially minimize its unwanted migration, such as, by example, during storage of the smoking article with the MSD powder inside. This expression also includes the fact that the additive materials contained in the MSD powder are what mobile enough to be released so controllable, for example, when the MSD powder is subjected to heat or combustion, although not limited by it.

MSD powder is, as mentioned in the above, a temperature sensitive powder in which Additive materials may emanate from the MSD powder because of the fusion or other thermal interactions with dust. The temperature sensitive characteristics of materials additives and the other constituents of the MSD powder allow the additive materials are released in a controllable way with the hot. For example, if liquid menthol is incorporated into a breast MSD powder, for which starch is used in combination with a MSD procedure to form an MSD powder, the temperature at that the menthol is liquefied is the critical temperature to release (for fusion) menthol from the MSD powder.

The MSD powder is preferably incorporated in a tobacco mesh to provide an encapsulated flavoring that presents reduced storage migration properties, with controlled release properties.

MSD powder can include any material in addition to the additive materials that allow and contribute, potentially, to the controlled release of the additive material or affect the properties of additive materials or dust MSD with the application of heat or combustion. For example, him MSD powder may include spray-dried products, such as starch, sorbitol, maltodextrin or similar substances, that can provide the encapsulation of additive materials, such such as menthol, while not significantly modifying the desired characteristics, such as the menthol flavor, of the additive materials

The MSD powder may have formed by any suitable MSD powder formation technique, such as drying by sprayed, dried in fluid bed and / or dried on tape, in such a way that drying is completed at temperatures below levels for melting or volatilization of additive materials and / or MSD powder, in order to produce powder additive materials dried In the event that such temperature is used excessively  high, the additive material and / or the MSD powder may melt or volatilize during treatment and cause agglomeration of the MSD powder or the release of additive materials from the form of MSD powder.

MSD powder with additive materials inside It is formed by a multi-stage drying procedure. In a multi-stage drying procedure provided by way of For example, an additive material in liquid form is provided and spray, then through some pressure nozzles or a rotary atomizer, in the bosom of air heated to a first temperature, in order to form droplets, such that the heated air removes excess liquid to form droplets half dry Next, the medium dry droplets are supplied inside a secondary drying zone, which is heated to a second temperature different from the first temperature, so that the secondary drying zone is used to remove excess of liquid and dry the medium dry droplets to form the powder MSD In this way, liquid or viscous products, such as the liquid menthol (with emulsifiers and spray-dried products), they can become a dry and heat sensitive powder in which it is possible to achieve an improved retention of the properties of Liquid products

A preferred method of making an MSD powder which provides an encapsulated additive material, includes liquefying a additive material and mix the liquefied additive material with a emulsifier, such as modified food starch, to form An emulsion The additive material may be a liquid additive or viscous, such as liquid menthol, or it can be an additive solid, such that the solid additive can be liquefied by using a solvent, heat or other methods of liquefaction.

The emulsion can then be mixed with a powder or other spray-dried medium, such as maltodextrin and / or sorbitol, such that the powder encapsulates the emulsion of additive and emulsifier. Then the emulsion mixture and Powder can be sprayed and dried. Preferably, the drying is Produces in two stages. First, the mixture that is sprayed can be sprayed by passing it through an air dryer heat at a first temperature, in order to eliminate most of the liquid Second, the sprayed mixture can be dried to a second temperature in order to remove the rest of the dust liquid. Preferably, the first temperature is higher than the second temperature in order to reduce any damage that may caused by prolonged exposure to the highest temperature, while allowing efficient drying of the final product. Thanks to the use of a plurality of temperature stages, the additive material can be encapsulated and dried within a MSD powder, such that the additive material is disposed of releasable form in MSD powder.

Preferably, a tobacco mesh is formed by the use of a papermaking type process, so as to form a baseband while, concurrently or subsequently, a tobacco flavoring material is applied on the baseband . In the first part of this procedure, a strip of tobacco is washed with water and the soluble substances are collected for use in a subsequent coating stage. The remaining (extracted) tobacco fiber is used in the preparation of a slime that will be used in band / paper forming techniques, in order to form the base band. In order to reinforce the base web, carbon fibers can be added to the slime by dispersing a carbon fiber stock in water and adding, for example, sodium alginate to favor dispersion. The carbon fiber dispersion is then (optionally) added to the tobacco fiber slime, together with (optionally) conventional flavoring. It is possible to add any other hydrocolloid instead of sodium alginate, as long as, preferably, it does not interfere with the aromatized tobacco response, is water soluble and has a molecular weight suitable for conferring resistance to the tobacco mesh. The resulting mixture is then wetted onto a Fourdrinier cable of a conventional papermaking machine or the like (such as a steel tape), so as to form a base band. Soluble substances previously removed by washing the tobacco strip are mixed with ground tobacco, and the mixture is deposited by coating on one of the faces of the base web, preferably with a conventional reverse roller coating apparatus, located after a Yankee drum or dryer, beyond the Fourdrinier cable. The proportion of soluble tobacco substances with respect to tobacco dust or particles in the added slime is preferably adjusted to a value between about 1: 1 and 20: 1, but preferably in, or about, 4 to 1. The added slime can also be cast or extruded on the base band. Alternatively, the coating step can be carried out outside the production chain, regardless of the manufacture of the baseband. During or after the coating stage, aromatizers that are conventional in the cigarette industry are preferably added. Pectin or other hydrocolloids are added, preferably in a range between 0.1% and 2.0% by weight of the tobacco mesh, in order to improve the susceptibility of coating the
silt.

A preferred method is provided for incorporate a flavoring substance release additive such as an MSD powder within a tobacco mesh, such that tobacco mesh includes a substance release additive flavoring such as MSD powder within a layer or in the mesh of tobacco, for controlled release when smoking a cigarette which incorporates tobacco mesh. A preferred method includes form a tobacco mesh by forming a band of base, then apply a slime of a release additive of flavoring substance, such as MSD powder and a liquid, preferably water, on the base band, such that the base band includes ground tobacco. The slime can be scattered or Spread across the length of the tobacco mesh. Finally the slime can be dried by exposure to ambient air, or It may well be dried by applying heat to the slime, so that the heat application temperature is effective not to melt nor volatilize the additive material contained in the additive of release of flavoring substance.

Preferably, the slime of an additive of release of flavoring substance such as MSD powder and liquid, it is prepared just before being applied to the baseband, of so that the time span during which the additive is minimized of release of flavoring substance is contained in the slime, to in order to avoid volatilization of the additive material. Plus generically, the flavoring substance release additive heat activated preferably has a low solubility in water, so that it is compatible with the procedure of manufacture of tobacco mesh or with the procedure of incorporating the flavoring substance release additive in the mesh of tobacco. The silt temperature is preferably maintained in a appropriate value, such as between approximately 26 ° C and 37 ° C (between 80ºF and 100ºF) or approximately 32ºC (90ºF), in order to prevent the crystallization of the additive material, such as menthol, to lower temperatures as well as volatilization of the material additive at higher temperatures.

Additionally, they can also be used glycerin, pectin and tobacco powder in the wet slime with structural and aesthetic purposes, so that slime can be spread by a surgical blade (blade) in order to provide a relatively uniform thickness to the mesh of tobacco.

A preferred method is also provided for make an encapsulated film on a tobacco mesh that contains MSD powder, in which the film allows a reduction Additional migration of additive materials in MSD powder, within a smoking article. Thanks to the contribution of the film, MSD powder can be further isolated from other portions of an article of smoking or other smoking articles, when these are package together, thus reducing any interaction between the additive material and the other portions of the article of smoke. The preferred method includes forming a tobacco mesh, then spray a film on the mesh by a spray nozzle, such that the temperature of the film on the spray nozzle is between approximately 50ºC and 70ºC (between 120ºF and 160ºF), plus preferably, at about 60 ° C (140 ° F), during sprayed Next, the film can be placed in a dryer for an expedited and complete drying, in which the temperature of the dryer does not cause the MSD film or powder to melt, burn or be adversely affected otherwise.

A preferred embodiment is provided for manufacture a cigarette with MSD powder in which MSD powder allows controlled release of additive materials to the cigarette when The cigarette is smoked. A preferred method includes grinding tobacco and remove the tobacco liquid, also known as liquor from concentrated extract (CEL - "concentrated extract liquor"). TO then the remaining solid tobacco substances can be  mixed with cellulose or other similar material to form a base band It can then be formed on the baseband a slime that includes MSD powder, CEL, glycerin and / or pectin, to In order to form a layer of MSD powder on the baseband.

A layer can then be applied optional tobacco powder and spread throughout the baseband, over silt, to provide aesthetic improvements additional, such as an additional aromatization of tobacco, of so that the baseband and slime can be dried to continuation. Finally, a movie can be formed, preferably carrageenan or other food grade film, with heat response and relatively lacking flavor, on the dry base band, together with the dried slime layer, in order to tightly enclose slime constituents, including the MSD powder, CEL, glycerin and / or pectin, under the film, and prevent the migration of any portion of the baseband or of slime that includes MSD powder.

A preferred embodiment is provided for manufacturing a tobacco mesh that includes MSD powder for a cigarette, in which the MSD powder allows the flavoring components of tobacco smoke to be disposed releasably within the tobacco mesh. A preferred method includes forming a tobacco grid with MSD powder incorporated therein, mixing the MSD powder with tobacco and then forming the tobacco mesh from the mixture. Preferably, the tobacco is ground tobacco or reconstituted tobacco, so that the tobacco and the MSD powder are miscible before forming the tobacco mesh from the tobacco and the powder
MSD

Preferably, the tobacco mesh is formed of such that the width of the tobacco mesh formed is greater than a width of the tobacco mesh that is used in a cigarette. For example, a tobacco mesh of between approximately 300 mm and 450 mm (between 12 and 18 inches) of width.

Additionally, it can be formed, so optional, a film sprayed on the tobacco mesh by  the use of a spray nozzle, such that the film It is preferably heated to liquefy the film material. For example, if carrageenan is used for the film, the Carrageenan can be heated to between approximately 50ºC and 70ºC (between 120ºF and 160ºF), more preferably, at about 60ºC (140 ° F), in order to provide a desirable spray viscosity. TO Then the film can be dried in ambient air, or either a dryer or vacuum can be used to improve the drying procedure

Once the tobacco mesh has been formed (and the film has been formed, if desired), the tobacco mesh can be split or cut into different sizes for use in a smoking article For example, if the tobacco mesh is going to use in a non-traditional standard size cigarette, such such as cigarettes used in smoking systems electrically heated cigarettes, widths of tobacco mesh of approximately 23.2 mm.

Another method is provided to form a film on a tobacco mesh that includes MSD powder for a cigarette, in which the drying process for the film It is part of a rolling or bundling procedure tobacco. A preferred method includes forming a first coil of tobacco mesh that includes the MSD powder, before the formation of A movie about her. The tobacco mesh obtained from the first coil can then be unwound from the first coil to a second coil and roll up on the second coil for your subsequent incorporation into a cigarette. Between the first and second coils, as the tobacco mesh moves from the first coil to the second coil, it is possible to apply a film to the tobacco mesh Preferably, the first coil is located at a certain distance from the second coil, so that distance allows the film to dry before being rolled in The second coil.

Preferably, the film is applied in several lines on the tobacco mesh, so that the tension surface spreads or spreads the film across the surface of the tobacco mesh. Optionally, heat can be applied to the film and to the tobacco mesh to dry the film while the Tobacco mesh is rolled to and over the second coil; without However, preferably, the distance between the first and second coils is an effective distance to allow drying of the film between the first and second coils without having to Use added heat. For example, an effective distance for allow drying of a film made of carrageenan on a tobacco mesh approximately 400 mm (16 inches) wide, it is approximately 10 m (33 feet) between the first and second rolls coil

Similarly, they are preferably incorporated in tobacco complexes of inclusion complexes comprising beta-cyclodextrin, for example, for cigarettes not mentholated, as described above, in order to provide an encapsulated aromatizer that has properties of reduced storage migration, along with properties of controlled release

The invention can be embodied in other specific forms without departing from the scope of the invention. So, therefore, although the invention has been illustrated and described in accordance with various preferred embodiments, it is found that it is possible make variations and changes in it without departing from the invention, as set forth in the claims.

Claims (7)

1. An electrically heated cigarette (23) for an electrical system for smoking, comprising: at least one sorbent; Y a flavoring substance release additive, which includes at least one flavoring substance capable of being released into the electrically heated cigarette, when the flavoring substance release additive is heated to at least a minimum temperature, characterized in that the sorbent comprises curled paper or crepe carbon (154), such that the carbon crepe paper is located inside a polypropylene sleeve or sleeve, which is located inside a heated cigarette filter electrically 2. An electrically heated cigarette (23) according to claim 1, wherein the additive of release of flavoring substance is located within a tobacco mesh (66) surrounding a tobacco stopper (80). 3. An electrically heated cigarette (23) according to claim 2, wherein the additive of release of flavoring substance comprises a complex of inclusion comprising beta-cyclodextrin incorporated into the tobacco mesh (66). 4. An electrically heated cigarette (23) according to claim 2, wherein the additive of release of flavoring substance comprises a powder dried in multiple stages, incorporated into the tobacco mesh (66). 5. An electrically heated cigarette (23) according to claim 2, 3 or 4, wherein the stopper of tobacco (80) lacks substance release additive flavoring 6. An electrically heated cigarette (23) according to any of the preceding claims, in which the flavoring substance release additive comprises a non-mentholated flavoring substance. 7. An electrically heated cigarette (23) according to any one of claims 1 to 5, in which the flavoring substance release additive comprises a Menthol flavoring substance.