Filter for smoking articles containing solid flavourant and method of making same

Abstract

According to some embodiments of the present application, there is provided a filter for a smoking article and a smoking article comprising the filter, wherein a flavoring agent, which is in a solid state at room temperature, is uniformly added to the inside of the filter, and the flavoring agent is composed of at least one natural wax and a flavoring ingredient supported in the at least one natural wax.

Description

TECHNICAL FIELD

[0001] The present invention relates to a filter for a smoking article containing a solid flavoring agent and a method of manufacturing the same, and more particularly, to a filter for a smoking article containing a solid flavoring agent using a natural wax and a method of manufacturing the same. BACKGROUND

[0002] Techniques of adding flavors to aerosols provided from cigarettes are being researched. For example, in order to add flavors to aerosols, methods of spraying flavorings to medium sections or filter sections constituting cigarettes, etc. are used in the manufacturing of cigarettes.

[0003] On the other hand, as in the past, when flavorings are dissolved in solvents such as water, ethanol, propylene glycol, and medium-chain fatty acid triglycerides, and added to the structure of cigarettes, the retention and persistence of flavoring components in cigarettes are reduced, and the performance rate of flavors when a consumer smokes is not high, and there are disadvantages in that tobacco taste and flavor performance are not uniform.

[0004] In order to overcome these problems, recently, techniques of applying solid flavoring agents such as granules, tablets, and capsules to cigarettes have been introduced, but in order to apply such solid flavoring agents to cigarettes, separate adding devices are required, there are difficulties in uniform addition, etc., and the application method is more complicated than that of liquid flavoring agents. SUMMARY

[0005] Problems to be Solved by the Invention

[0006] The present invention has been made to solve the above-mentioned problems, and an object of the present invention is to provide a filter for a smoking article containing a solid flavoring agent, which can secure the retention and uniformity of flavoring agents and the persistence of flavor performance while easily applying the flavoring agents to cigarettes.

[0007] The technical problems of the present invention are not limited to the above-mentioned technical problems, and other technical problems that are not mentioned will be clearly understood by those skilled in the art from the following description.

[0008] Means for Solving the Problems

[0009] According to some embodiments of the present invention for solving the above-mentioned problems, a filter for a smoking article is provided, in which a flavoring agent in a solid state at room temperature is uniformly added to the inside of the filter for a smoking article, and the flavoring agent is composed of at least one natural wax and flavoring components supported in the at least one natural wax.

[0010] In some embodiments, the melting point of the flavoring agent can be 30°C to 80°C, preferably, can be 20°C to 50°C. More preferably, the melting point of the at least one natural wax can be 30°C to 50°C, and the melting point of the flavoring agent can be 25°C to 45°C.

[0011] The total weight of the flavoring agent contained in the smoking article filter can be 1 mg to 25 mg, preferably, can be 1 mg to 15 mg, but the total weight of the flavoring agent contained in the filter can of course vary depending on the physical specifications of the smoking article filter.

[0012] In some embodiments, the weight of the flavoring agent per unit volume (mm 3 ) of the smoking article filter contained in the smoking article filter can be 1 ug to 30 ug.

[0013] On the other hand, the weight of the at least one natural wax contained in the flavoring agent can be 20% to 98% of the total weight of the flavoring agent, preferably, can be 40% to 60% of the total weight of the flavoring agent.

[0014] According to some embodiments of the present application, a smoking article is provided, including: the smoking article filter; and a smoking material portion located upstream of the smoking article filter.

[0015] In some embodiments, the smoking article can further include a tubular filter having a cavity in the inside and uniformly added with the flavoring agent, located between the smoking article filter and the smoking material portion.

[0016] According to some embodiments of the present application, a method of manufacturing a smoking article is provided, including the steps of: preparing a flavoring agent by mixing and melting at least one natural wax and a flavoring ingredient; adding the melted flavoring agent to a smoking article filter rod; and manufacturing a smoking article filter by cutting the smoking article filter rod.

[0017] In some embodiments, the step of adding the melted flavoring agent to the smoking article filter rod can include the step of spraying the melted flavoring agent to the smoking article filter rod through a spray-type jet nozzle.

[0018] On the other hand, in the step of preparing the flavoring agent and the step of spraying the flavoring agent, the temperature of the melted flavoring agent can be 30°C to 80°C. Preferably, the temperature of the melted flavoring agent in the step of preparing the flavoring agent can be 60°C to 80°C, and the temperature of the melted flavoring agent in the step of spraying the flavoring agent can be 50°C to 70°C, and the viscosity of the melted flavoring agent can be 10 cP to 35 cP.

[0019] For example, the at least one natural wax can include at least one of cocoa butter and avocado butter, and the flavoring ingredient can include L-menthol.

[0020] The at least one natural wax included in the flavoring agent can be 20% to 98% by weight of the total weight of the flavoring agent, and preferably, can be 40% to 60% by weight of the total weight of the flavoring agent, and in this case, the melting point of the at least one natural wax can be 30°C to 50°C, and the melting point of the flavoring agent can be 25°C to 45°C.

[0021] In some embodiments, the at least one natural wax can include 30% to 70% by weight of the cocoa butter and 30% to 70% by weight of the avocado butter.

[0022] On the other hand, the method of manufacturing the smoking article can further include a step of winding the smoking material portion around the upstream end of the smoking article filter. In this case, in the step of preparing the flavoring agent and the step of adding the flavoring agent, the temperature of the melted flavoring agent can be 30°C to 80°C. Preferably, the temperature of the melted flavoring agent in the step of preparing the flavoring agent can be 60°C to 80°C, and the temperature of the melted flavoring agent in the step of adding the flavoring agent can be 50°C to 70°C, and the temperature of the solid flavoring agent in the step of winding the smoking material portion around the smoking article filter can be 15°C to 30°C.

[0023] According to some embodiments of the present application, there is provided a smoking article filter, a flavoring agent in a solid state at room temperature being uniformly added to the inside of the smoking article filter, the flavoring agent being composed of at least one natural wax and a flavoring ingredient supported in the at least one natural wax, the flavoring agent being composed of 40% to 60% by weight of the at least one natural wax and 40% to 60% by weight of the flavoring ingredient, the at least one natural wax being composed of 30% to 70% by weight of cocoa butter and 30% to 70% by weight of avocado butter.

[0024] According to some embodiments of the present application, there is provided a smoking article, including: the smoking article filter; and a smoking material portion located upstream of the smoking article filter.

[0025] According to some embodiments of the present application, there is provided a method of manufacturing a smoking article, including the steps of: preparing a flavoring agent, the flavoring agent being prepared by mixing and melting at least one natural wax and a flavoring ingredient; adding the melted flavoring agent to a filter rod for a smoking article; and manufacturing a filter for a smoking article by cutting the filter rod for a smoking article, the flavoring agent consisting of 40 to 60% by weight of the at least one natural wax and 40 to 60% by weight of the flavoring ingredient, the at least one natural wax consisting of 30 to 70% by weight of cocoa butter and 30 to 70% by weight of avocado butter.

[0026] According to some embodiments of the present application, there is provided a filter for a smoking article, a flavoring agent being uniformly added inside the filter for a smoking article at room temperature, the flavoring agent consisting of at least one natural wax and a flavoring ingredient supported in the at least one natural wax, the flavoring agent consisting of 40 to 60% by weight of the at least one natural wax and 40 to 60% by weight of the flavoring ingredient, the at least one natural wax consisting of 30 to 70% by weight of cocoa butter and 30 to 70% by weight of avocado butter, the at least one natural wax having a melting point of 30 to 50°C.

[0027] According to some embodiments of the present application, there is provided a smoking article, including: the filter for a smoking article; and a smoking material section located upstream of the filter for a smoking article.

[0028] According to some embodiments of the present application, there is provided a method of manufacturing a smoking article, including the steps of: preparing a flavoring agent, the flavoring agent being prepared by mixing and melting at least one natural wax and a flavoring ingredient; adding the melted flavoring agent to a filter rod for a smoking article; and manufacturing a filter for a smoking article by cutting the filter rod for a smoking article, the flavoring agent consisting of 40 to 60% by weight of the at least one natural wax and 40 to 60% by weight of the flavoring ingredient, the at least one natural wax consisting of 30 to 70% by weight of cocoa butter and 30 to 70% by weight of avocado butter, the at least one natural wax having a melting point of 30 to 50°C.

[0029] Inventive Effects

[0030] If the filter containing the solid flavoring agent according to the embodiments of the present application is applied to a smoking article, the retention of the flavoring ingredient in the filter can be improved, and thus, the amount of the flavoring performance during smoking can also be increased.

[0031] Further, a smoking article to which the solid flavoring agent prepared according to the embodiment of the present application is applied can alleviate an off-flavor problem that can occur due to the transfer of a humectant contained in a smoking material section or a plasticizer contained in a filter, etc. from each section to the other sections and the reaction thereof, or can mask these off-flavors with a flavoring ingredient, by minimizing the transfer of ingredients between the sections during storage.

[0032] In addition, the solid flavoring agent according to the embodiment of the present application is sprayed to the filter through a nozzle in a liquid state, so that the solid flavoring agent can be uniformly added to the filter without a separate solid flavoring agent adding device, and thus the solid flavoring agent adding process can be simplified and economic efficiency can be ensured. BRIEF DESCRIPTION OF DRAWINGS

[0033] Figure 1 A flow chart of a method of preparing a filter for a smoking article according to some embodiments of the present application is shown schematically.

[0034] Figure 2 A diagram of a structure of a combustion-type smoking article using a filter for a smoking article according to some embodiments of the present application is shown schematically.

[0035] Figure 3 A diagram of a structure of a non-combustion-type smoking article using a filter for a smoking article according to some embodiments of the present application is shown schematically.

[0036] Figure 4 A graph showing the change trend of menthol transfer amount per puff for confirming the flavor retention performance of a smoking article according to some embodiments of the present application is shown.

[0037] Figure 5 A result of sensory property evaluation of a smoking article according to some embodiments of the present application. DETAILED DESCRIPTION

[0038] Hereinafter, preferred embodiments of the present application will be described in detail with reference to the accompanying drawings. Advantages, features and methods of accomplishing the same of the present application will become apparent by referencing the accompanying drawings and embodiments explained in more detail later. However, the present application is not limited to the embodiments described below, and can be realized in various forms, and the embodiments are merely provided to enable the present application to be sufficiently disclosed to the public and to fully convey the scope of the present application to those skilled in the art to which the present application pertains. The scope of the present application is defined only by the claims. Throughout the specification, like reference numerals refer to like elements.

[0039] Unless otherwise defined, all terms (including technical and scientific terms) used in the present specification can be used as commonly understood meaning by one of ordinary skill in the art to which the present application belongs. Also, unless explicitly defined, no term is intended to be interpreted in an ideal or overbroad sense commonly used in a dictionary.

[0040] Also, in the present specification, a singular form also includes a plural form unless specifically described in the context. The terms "comprises" and / or "comprising," as used in the present specification, specify the presence of the stated component, step, operation and / or element but do not preclude the presence or addition of one or more other components, steps, operations and / or elements.

[0041] It should be understood that although the terms "first" or "second" and the like including ordinal numbers used in the present specification can be used to describe various components, the components should not be limited by these terms. The terms are used only to distinguish one component from another.

[0042] Throughout the specification, a "smoking article" can refer to an article capable of generating an aerosol, such as a cigarette (a cigarette), a cigar, etc. The smoking article can include an aerosol-generating substance or an aerosol-forming substrate. In addition, the smoking article can include a solid material based on a tobacco raw material, such as reconstituted tobacco, pipe tobacco, reconstituted tobacco, etc. The smoking substance can include volatile compounds.

[0043] In addition, in the description of the smoking article, "upstream" or "upstream direction" can refer to a direction away from the mouth of the smoker, and "downstream" or "downstream direction" can refer to a direction close to the mouth of the smoker. For example, in the smoking article 100 shown in FIG. 1, the upstream direction is a direction from the filter 110 to the smoking substance 120, and the downstream direction is a direction from the smoking substance 120 to the filter 110. Figure 2 In the smoking article 100 shown, the smoking substance portion 120 is located at a position upstream of or in the upstream direction of the filter portion 110.

[0044] Figure 1 A flowchart of a method of manufacturing a filter for a smoking article to schematically show some embodiments of the present application.

[0045] Referring to Figure 1 , the method of manufacturing a filter for a smoking article can include the following steps: a preparation step S10 of preparing a flavoring agent; a melting step S20 of melting the prepared flavoring agent; an addition step S30 of adding the melted flavoring agent to a filter rod for a smoking article; and a cutting step S40 of manufacturing a filter for a smoking article by cutting the filter rod for a smoking article.

[0046] In the preparation step S10 of the flavoring agent, the flavoring agent can be prepared by mixing and melting at least one natural wax and a flavoring ingredient.

[0047] The flavoring agent can be prepared at a temperature of about 30°C to 90°C, preferably, about 60°C to 80°C. In the flavoring agent preparation step, at least one of the natural wax and the flavoring ingredient can be in a liquid state. That is, at least one of the natural wax and the flavoring ingredient can be in a liquid state rather than a solid state.

[0048] In some embodiments, the flavoring agent can be a mixture of a natural wax and a flavoring ingredient that is in a solid state at a temperature of about 30°C or less and in a liquid state having a viscosity of 50 cP or less at a temperature of about 50°C or more.

[0049] Preferably, the flavoring agent can be a mixture of a natural wax and a flavoring ingredient that is in a solid state at a temperature of about 45°C or less and in a liquid state having a viscosity of 10 cP to 35 cP at a temperature of 50°C to 70°C (e.g., the flavoring agent temperature in the step of adding to the filter rod) and in a liquid state having a viscosity of 1 cP to 15 cP at a temperature of 60°C to 80°C (e.g., the flavoring agent preparation step).

[0050] When the flavoring agent has the above-described state conditions, the natural wax and the flavoring ingredient can be more uniformly mixed in the preparation step S10, and in the adding step S30, the flavoring agent can be uniformly absorbed into the filter rod while being sprayed without a problem of clogging of a spray-type nozzle, and during a subsequent process of manufacturing a cigarette using the filter rod and storage after the cigarette is manufactured, the tobacco ingredient can be effectively maintained in the cigarette.

[0051] On the other hand, as described later, in order to secure preferred flavor retention during storage of a cigarette and flavor expression during smoking, the state conditions of the flavoring agent should satisfy a state in which at least one natural wax is contained in the flavoring agent in an amount of 20% by weight or more (preferably, about 40% to 60%). At this time, the melting point of the at least one natural wax can be about 30°C to 80°C (preferably, 35°C to 45°C), and the melting point of the flavoring agent can be about 20°C to 80°C (preferably, 25°C to 40°C).

[0052] On the other hand, as the natural wax and the flavoring ingredient contained in the flavoring agent, the types thereof are not limited as long as the state conditions of the flavoring agent are satisfied.

[0053] In some embodiments, the at least one natural wax can include at least one of a long-chain fatty acid, a fatty acid ester, a fatty acid diester, and a fatty acid triester.

[0054] For example, the at least one natural wax can include cocoa butter, avocado butter, beeswax, white wax, lanolin, shellac, whale wax, palm oil, palm kernel oil, mango oil, soybean oil, cottonseed oil, coconut oil, canuba wax, candelilla wax, bayberry wax, sugar cane wax, castor wax, esparto wax, wood wax, jojoba wax, ouricury wax, rice bran wax, soy wax, microcrystalline wax, montan wax, ozokerite wax, peat wax, and combinations thereof.

[0055] For example, the flavoring ingredient can include menthol, liquorice, sucrose, fructose syrup, isosaccharose, cocoa, lavender, cinnamon, nutmeg, celery, fenugreek, cascarilla, sandalwood, bergamot, geranium, honey essence, rose oil, vanilla, lemon oil, orange oil, peppermint oil, cinnamon, dill, cognac, jasmine, chamomile, cassia, ylang-ylang, danshen, spearmint, ginger, coriander, coffee, and combinations thereof.

[0056] Preferably, the at least one natural wax can include at least one of cocoa butter and avocado butter, and the flavoring ingredient can include L-menthol. As a more specific example, the at least one natural wax can include 30 to 70 wt% of the cocoa butter and 30 to 70 wt% of the avocado butter, and the flavoring agent can include 20 to 98 wt% (preferably, 40 to 60 wt%) of the at least one natural wax and 40 to 60 wt% of the flavoring ingredient.

[0057] In the melting step S20 of melting the prepared flavoring agent, the flavoring agent, which is stored at room temperature and exists in a solid state for later addition of the flavoring agent to a filter, can be melted to be made into a liquid state.

[0058] On the other hand, in the present specification, the preparation step S10 and the melting step S20 of the flavoring agent are described as separate processes, but unlike this, the preparation step S10 and the melting step S20 of the flavoring agent can be substantially performed through one process. That is, the liquid flavoring agent in the preparation step S10 of the flavoring agent can be added to a filter rod (an addition step S30) without an intermediate process of solidification after preparation.

[0059] Through the addition step S30 of adding the flavoring agent to the filter rod for a smoking article, the flavoring agent can be uniformly added to the inside of the filter rod for a smoking article.

[0060] The addition step S30 of the flavoring agent can be performed in various ways, for example, allowing the flavoring agent to freely fall and penetrate onto the filter rod, or spraying the flavoring agent onto the filter rod using a spray-type jet nozzle, etc.

[0061] Preferably, the flavoring agent can be sprayed onto the filter rod through a spray-type nozzle. In order to spray the flavoring agent in a solid state at room temperature using the spray-type nozzle, the flavoring agent in the flavoring agent adding step S30 can be heated to a temperature above the melting point to be in a liquid state.

[0062] In some embodiments, the temperature of the flavoring agent in the flavoring agent preparing step S10 and the flavoring agent adding step S30 can be about 30 to 80°C. Alternatively, the temperature of the flavoring agent in the flavoring agent adding step S30 can be higher than the melting point of the flavoring agent described above while being lower than the temperature of the flavoring agent in the flavoring agent preparing step S10. For example, the temperature of the flavoring agent in the preparing step S10 can be about 60 to 80°C, and the temperature of the flavoring agent in the adding step S30 can be about 50 to 70°C.

[0063] In the flavoring agent adding step S30, the amount of the flavoring agent added per unit length (mm) in the direction in which the filter rod extends can be about 50 to 1,000 ug. For example, when the total length of one filter rod is 80 mm, the flavoring agent added to one filter rod can be about 4 to 135 mg. For example, when the length of one filter tip is 15 mm, the flavoring agent added to one filter tip can be about 0.75 to 25 mg.

[0064] In some embodiments, the amount of the flavoring agent added per unit volume (mm 3 ) of the filter rod can be about 1 to 30 ug.

[0065] The filter rod to which the flavoring agent is added can be prepared into a filter tip S40 for a smoking article through a cut-off process.

[0066] In some embodiments, between the flavoring agent adding step S30 and the filter rod preparing step S40, a step of wrapping the filter rod with a wrapper can be further performed, in which case, loss of the flavoring agent absorbed into the filter rod, which can occur in a subsequent process of preparing a cigarette, can be further prevented.

[0067] After the filter tip for a smoking article preparing step S40, a smoking article including the filter tip for a smoking article of the present application can be prepared by further performing a step of combining a smoking material section filled with an aerosol generating material such as cut tobacco and reconstituted tobacco, etc. to the prepared filter tip, etc. The combination of the above-described filter tip and the above-described smoking material section can be performed by wrapping at least a part of the above-described filter tip and the above-described smoking material section with a tipping wrapper, etc.

[0068] In some embodiments, the flavoring agent temperature in the preparation step S10 of the flavoring agent is about 60 to 80°C, the flavoring agent temperature in the adding step S20 of the flavoring agent can be about 50 to 70°C, and the flavoring agent temperature in the combining step of the filter and the smoking substance part can be about 15 to 30°C. Thereby, the natural wax and the flavoring ingredient can be more uniformly mixed, the flavoring agent can be sprayed without a problem of clogging of a spray-type nozzle while being uniformly absorbed in the filter, and the retention of the flavoring ingredient can be effectively enhanced during a subsequent process of cigarette production or during storage of the cigarette.

[0069] Figure 2 A diagram schematically showing a structure of a smoking article using a filter for a smoking article according to some embodiments of the present application.

[0070] Referring to Figure 2 The smoking article 100 can include a filter part 110 wrapped by a filter wrapper 110a, a smoking substance part 120 wrapped by a smoking substance wrapper 120a, and a tipping paper 130 combining the filter part 110 and the smoking substance part 120.

[0071] The filter part 110 can be disposed downstream of the smoking substance part 120, and is a region through which an aerosol substance generated in the smoking substance part 120 passes before being inhaled by a user.

[0072] The filter part 110 can be formed of various materials, for example, the filter part 110 can be a cellulose acetate filter.

[0073] In some embodiments, the filter part 110 can be a tubular member including a cavity inside. In addition, the filter part 110 can be manufactured by inserting a member such as a film, a tube, or the like of the same or different material inside (e.g., the cavity).

[0074] Although the filter part 110 of the present embodiment is illustrated as a single filter composed of a single filter, the present application is not limited thereto. For example, the filter part 110 can of course be provided as a double filter having two cellulose acetate filters, a triple filter, or the like, to improve a filtering efficiency.

[0075] Further, although not shown in the drawings, a crushable capsule (not shown in the drawings) having a structure in which a content solution containing a flavoring agent is surrounded by a film can be included inside the filter part 110.

[0076] The filter part 110 is disposed downstream of the smoking substance part 120 to function as a filter through which an aerosol substance generated in the smoking substance part 120 passes before being inhaled by a user.

[0077] On the other hand, the filter part 110 can be a filter having a structure in which a plurality of filter segments are combined by a filter segment combining member, as described above with reference toFigure 1 The described method perfumes the filter. That is, a flavoring agent, which is in a solid state at room temperature, is uniformly added inside the filter portion 110, and the flavoring agent is composed of at least one natural wax and a flavoring ingredient carried in the at least one natural wax. The total weight of the flavoring agent contained in the filter portion 110 can be about 1 mg to 25 mg, preferably, about 1 mg to 15 mg, and more preferably, about 2 mg to 3 mg. In addition, the weight of the flavoring agent per unit volume (mm 3 ) of the filter portion 110 can be about 1 ug to 30 ug, and preferably, 2 ug to 10 ug.

[0078] The filter portion 110 can be wrapped by a filter wrapping paper 110a. The filter wrapping paper 110a can be made of a paper having oil resistance, and the inner side of the filter wrapping paper 110a can further include an aluminum foil.

[0079] The smoking substance portion 120 can be filled with raw tobacco leaves, reconstituted tobacco leaves, or a mixture of the tobacco leaves and the reconstituted tobacco leaves. The mixture can be filled in the smoking substance portion 120 in a sheet form or a cut filler form. The smoking substance portion 120 can have a long and long extending rod shape, and the length, circumference, and diameter thereof can vary.

[0080] Also, the smoking substance portion 120 can include at least one aerosol generating substance among glycerol, propylene glycol, ethylene glycol, dipropylene glycol, diethylene glycol, triethylene glycol, tetraethylene glycol, and oleyl alcohol. Also, the smoking substance portion 120 can include other additive substances such as a flavoring agent, a wetting agent, and / or an acetate compound.

[0081] The smoking substance portion 120 can be wrapped by a smoking substance wrapping paper 120a. Although not shown in the drawing, the smoking substance wrapping paper 120a can have a double paper structure, and further, the smoking substance wrapping paper 120a can be a low ignition propensity cigarette paper formed with one or more low ignition propensity (LIP) bands (not shown in the drawing).

[0082] The filter portion 110 wrapped by the filter wrapping paper 110a and the smoking substance portion 120 wrapped by the smoking substance wrapping paper 120a can be combined and wrapped by a tipping paper 130.

[0083] Figure 3 A drawing schematically showing a structure of a non-combustible smoking article employing a filter for a smoking article according to some embodiments of the present application.

[0084] Referring to Figure 3The smoking article 200 can include a smoking substance portion 210, a support structure 220, a cooling structure 230, a mouthpiece portion 240, and a wrapper 250. Although not shown in the drawing, at least one of the smoking substance portion 210, the support structure 220, the cooling structure 230, and the mouthpiece portion 240 can be individually wrapped by a separate wrapper before being wrapped by the above-described wrapper 250. For example, the smoking substance portion 210 is wrapped by a smoking substance wrapper (not shown in the drawing), and at least one of the support structure 220, the cooling structure 230, and the mouthpiece portion 240 can be wrapped by a filter wrapper (not shown in the drawing).

[0085] The smoking substance portion 210 can include an aerosol generating material. For example, the aerosol generating material can include at least one of glycerol, propylene glycol, ethylene glycol, dipropylene glycol, diethylene glycol, triethylene glycol, tetraethylene glycol, and oleyl alcohol, but is not limited thereto.

[0086] In some embodiments, the smoking substance portion 210 can be filled with reconstituted tobacco sheets. In some other embodiments, the smoking substance portion 210 can be filled with a plurality of tobacco shreds finely cut from the reconstituted tobacco sheets. For example, the smoking substance portion 210 can be formed by combining a plurality of tobacco shreds in the same direction (in parallel) or randomly.

[0087] The support structure 220 can be a tubular member including a cavity 220H in the inside. In addition, the support structure 220 can be made by inserting a member such as a film, a tube, or the like of the same or different material in the inside (i.e., the cavity 220H).

[0088] The support structure 220 can be made of cellulose acetate. Thereby, a phenomenon in which the internal substance of the smoking substance portion 210 is pressed backward (i.e., in the downstream direction) in the case of inserting the heater 2300 can be prevented, and a cooling effect of the aerosol can also be generated.

[0089] The cooling structure 230 can function as a cooling member for cooling the aerosol generated by heating the smoking substance portion 210 by a heater (not shown in the drawing) of an aerosol generating device used together with the smoking article 200. Accordingly, the user can inhale the aerosol cooled to an appropriate temperature.

[0090] The above-described cooling structure 230 can have various structures, such as a member in which polymer fibers such as woven polylactic acid (PLA) or the like are woven, a member in which a porous paper sheet is wound, a tubular cellulose acetate member having a cavity in the inside, or a paper tube of a paper material in which a cavity is formed in the inside, or the like.

[0091] The mouthpiece portion 240 is located at the downstream end of the smoking article 200 to serve as a filter to finally transfer the aerosol transferred from the upstream to the user. In some embodiments, the mouthpiece portion 240 can be a cellulose acetate filter. Although not shown in the drawing, the mouthpiece portion 240 can be made of a recessed filter, and the mouthpiece portion 240 can include at least one crushable capsule (not shown in the drawing) containing a flavoring ingredient.

[0092] The wrapping paper 250 can prevent the phenomenon of the smoking article 200 being combusted. In addition, the wrapping paper 250 can prevent the holder of the aerosol-generating device (not shown in the drawing) from being contaminated by the substances generated in the smoking article 200.

[0093] On the other hand, although not shown in the drawing, the smoking article 200 can further include a front-end filter segment that is connected to the smoking substance portion 210 upstream of the smoking substance portion 210 and has an aerosol passage (in this case, at least one of the support structure 220 and the cooling structure 230 can be omitted). The front-end filter segment can prevent the smoking substance portion 210 from being detached to the outside of the smoking article 300, and can also prevent the aerosol liquefied from the smoking substance portion 210 from flowing to the outside of the smoking article during smoking.

[0094] On the other hand, at least one of the support structure 220, the cooling structure 230, the mouthpiece portion 240, and the front-end filter segment can be a filter that is subjected to flavoring treatment in the manner described above with reference to Figure 1 That is, a flavoring agent consisting of at least one natural wax and a flavoring ingredient supported in the at least one natural wax and being in a solid state at room temperature is uniformly added inside the support structure 220, the cooling structure 230, the mouthpiece portion 240, or the front-end filter segment. In some embodiments, the weight of the flavoring agent per unit volume (mm 3 ) of each segment can be about 1 ug to 30 ug, and preferably, can be 2 ug to 10 ug.

[0095] As described above, when the solid flavoring agent of the present application is applied to at least one of the segments of the smoking article 200, the retention of the added flavoring ingredient can be ensured, and in particular, when the solid flavoring agent of the present application is applied to the support structure 220 and / or the cooling structure 230, the support structure 220 and / or the cooling structure 230 can further serve as a barrier layer to prevent the transfer of ingredients between the smoking substance portion 210 and the mouthpiece portion 240.

[0096] Hereinafter, the structure of the present application and its effects will be described in more detail through examples and comparative examples. However, the present examples are only for more specifically explaining the present application, and the scope of the present application is not limited by these examples.

[0097] Example 1

[0098] The filter portion of a general cigarette prepared for the purpose of experiment of the example was removed, and a filter to which a solid flavoring agent was added was combined with a medium portion to prepare a cigarette having the same structure as the smoking article 100 shown in FIG. 1. Specifically, in the filter described above, about 3 mg of a flavoring agent consisting of about 50 wt% of natural wax and about 50 wt% of L-menthol was added, and the natural wax was used by mixing about 50 wt% of cocoa butter and about 50 wt% of avocado butter. After the flavoring agent was prepared at a temperature of about 70°C, it was added to a filter rod in a Transfer Jet Nozzle System (TJNS) manner at a temperature of about 60°C. The prepared filter was stored at room temperature for about 2 days, and then assembled into a cigarette. Figure 2

[0099] Comparative Example 1

[0100] The filter and the cigarette were prepared in the same manner as in Example 1, except that a flavoring agent consisting of about 50 wt% of medium chain fatty acid triglyceride (MCTG) and about 50 wt% of L-menthol was used.

[0101] Comparative Example 2

[0102] The filter and the cigarette were prepared in the same manner as in Example 1, except that a flavoring agent consisting of about 30 wt% of the natural wax of Example 1 and about 70 wt% of L-menthol was used.

[0103] Comparative Example 3

[0104] The filter and the cigarette were prepared in the same manner as in Example 1, except that a flavoring agent consisting of about 70 wt% of the natural wax of Example 1 and about 30 wt% of L-menthol was used.

[0105] Comparative Example 4

[0106] The filter and the cigarette were prepared in the same manner as in Example 1, except that a flavoring agent consisting of about 50 wt% of natural wax consisting of Beeswax and about 50 wt% of L-menthol was used.

[0107] Experimental Example 1: Analysis of the amount of menthol remaining in the filter and the amount of menthol in the smoke component

[0108] ​To evaluate the flavor retention in the filter and the degree of flavor expression upon smoking, the components in the filter and the smoke components of each of the cigarettes according to Example 1 and Comparative Examples 1 to 4 were analyzed, and the results are shown in Table 1, and the change trend of menthol transfer amount per puff is shown in Figure 4 Table 1. Each sample was trapped for 3 times of smoke, and each was repeatedly performed on the basis of 10 puffs, and the average of the 3 trapping results was calculated. In a smoking chamber having a temperature of about 20°C and a humidity of about 62.5%, the cigarettes were tested according to the smoking conditions of Health Canada (HC) using an automatic smoking device. In Table 1, the first wax indicates a natural wax consisting of about 50% by weight of cocoa butter and about 50% by weight of avocado butter, and the second wax indicates a natural wax consisting of 100% by weight of beeswax.

[0109] Table 1

[0110]

[0111] As shown in Table 1, there was no significant difference in the residual amount of L-menthol component in the filter immediately after the cigarette was prepared between the examples and the comparative examples, but there was a significant difference in the residual amount of L-menthol in the filter and the amount of L-menthol component in the mainstream smoke of the cigarette prepared after 4 weeks between the examples and the comparative examples. Specifically, the flavor retention of Example 1 and Comparative Examples 2 to 4 using natural wax as a solvent was significantly higher than that of Comparative Example 1 using MCTG as a solvent, and thus it can be confirmed that the use of a flavoring agent consisting of natural wax and flavor components is advantageous in terms of flavor retention. From the results of Example 1 and Comparative Examples 2 to 4, it can be seen that as the amount of natural wax component in the flavoring agent increases, the flavor retention rate also increases. With reference to the amount of L-menthol expression in the mainstream smoke, the flavor expression amount of Example 1 in which the flavoring agent was composed of 50% by weight of the first wax was significantly higher than that of the other comparative examples. Specifically, it can be confirmed that the flavor retention rate of Example 1 after 4 weeks after preparation is lower than that of Comparative Example 3 or 4, but the flavor expression rate thereof is higher, and thus it can be seen that the flavor retention and the flavor expression characteristics are not substantially in proportion.

[0112] From the above results, it can be seen that when the flavoring agent contains 35% to 65% by weight of the first wax, both the flavor retention and the expression characteristics are excellent.

[0113] On the other hand, with reference to the L-menthol expression rate in Table 1, there was a case where more amount (i.e., more than 100%) of L-menthol was expressed than the added amount, but it is presumed that this is because of the additional menthol component added in the cigarette due to casing processing, perfuming processing of the wrapper, etc. in the medium section process, in addition to the L-menthol added as a flavoring agent in the filter section.

[0114] Further, referring to Figure 4 It can be confirmed that in the case of Comparative Example 1, the menthol transfer amount is high in the first 1 to 3 puffs, but the menthol transfer amount sharply decreases after the 4th puff, unlike in the case of Example 1, in which it can be known that menthol is transferred at substantially similar levels from the first puff to the last puff. That is, it can be confirmed that the smoking article according to the embodiment of the present application not only has the above-described excellent flavor retention, but also has an advantageous effect in terms of flavor persistence.

[0115] On the other hand, the present experiment was performed with respect to the reference Figure 2 The present experiment was performed with respect to the reference Figure 3 It is expected that a greater difference will occur in terms of flavor expression characteristics in the case of the non-combustion-type cigarette described in the reference

[0116] Experimental Example 2: Analysis of Menthol Transfer Regularity in Cigarette Storage

[0117] In order to confirm the menthol transfer regularity in the storage of the cigarette, the menthol content of each segment was analyzed by separating each segment of the cigarette that had been stored for 4 weeks after preparation.

[0118] Table 2

[0119]

[0120] As shown in Table 2, considering that there is no difference in the structure of the medium portion and the wrapper between the examples and the comparative examples, it can be confirmed that in Example 1 in which the first wax accounts for 50% by weight of the flavoring agent, the movement of the flavoring component to another segment in the filter is the least. Specifically, in the case of Comparative Example 1, not only is the flavor loss amount of the filter portion large, but also the flavor transfer amount to the other segment is relatively large, and in the case of Comparative Example 2, the flavor loss amount and the transfer amount are relatively small compared to Comparative Example 1, but are slightly increased compared to Example 1. Thus, it is expected that the problem of reduced taste sensation and the problem of generation of an off-taste, etc. caused by the transfer of the flavoring component to the other segment are the least in Example 1.

[0121] Comparative Example 5

[0122] The smoking material part of a general cigarette prepared for the purpose of experiment for the example was removed, and the smoking material part to which a solid flavoring agent was added was combined with the filter part to prepare a cigarette having the same structure as the smoking article 100 as shown in Figure 2

[0123] Specifically, in the smoking material part, about 3 mg of a flavoring agent consisting of about 50 wt% of a natural wax and about 50 wt% of L-menthol was added, and a natural wax prepared by mixing about 50 wt% of cocoa butter and about 50 wt% of avocado butter was used.

[0124] Experimental Example 3: Evaluation of Smoking Sensory Properties

[0125] The external aroma intensity, aroma intensity during smoking, aroma satisfaction, aroma persistence, taste intensity, harmony, and overall tobacco taste of Example 1 in which a flavoring agent containing 50 wt% of a first wax (cocoa butter, avocado butter) was added inside the filter part, Comparative Example 4 in which a flavoring agent containing 50 wt% of a second wax (beeswax) was added inside the filter part, and Comparative Example 5 in which a flavoring agent containing 50 wt% of a first wax was added inside the medium part were evaluated, and the results are shown in Figure 5 The sensory property evaluation was performed for a total of 20 panelists using the cigarettes of each example after 4 weeks from preparation, and scored on a 7-point full scale basis.

[0126] Figure 5 Results of sensory property evaluation of the smoking articles of some examples of the present application.

[0127] As shown in Figure 5 The aroma intensity during smoking, aroma satisfaction, aroma persistence, and harmony of Example 1 were more excellent than those of Comparative Examples 4 and 5, and thus it was known that Example 1 in which a flavoring agent containing 50 wt% of a first wax was added inside the filter part had the most excellent sensory properties.

[0128] On the other hand, in the case of Comparative Example 5, the external aroma intensity of the cigarette before smoking was significantly greater than those of Example 1 and Comparative Example 4, but the aroma properties (aroma intensity during smoking, aroma satisfaction, and aroma persistence) transmitted to the user during smoking were relatively poor, and thus it was known that the case in which the same flavoring agent was applied to the filter part was more advantageous in terms of sensory properties than the case in which the same flavoring agent was applied to the medium part.

[0129] In the case of Comparative Example 4, it was known that the aroma retention properties were superior to those of Example 1 and Comparative Example 5 due to the lowest external aroma intensity, but it was also known that the performance properties of the aroma component added inside the filter part during smoking were disadvantageous compared to Example 1.

[0130] ​From the above results, it can be seen that, when the filter added with the solid flavoring agent according to the embodiment of the present application is applied to cigarettes, the inherent satisfaction and flavor satisfaction of tobacco can be improved as a whole.

[0131] Those skilled in the art to which this embodiment belongs will be able to understand that the present application can be implemented in modified forms without departing from the essential characteristics of the present application. Therefore, the disclosed embodiments should not be considered from a limiting point of view, but from an illustrative point of view. The scope of the present application is not limited in the above description, but in the claims, and should be interpreted as all differences within the scope equivalent thereto being included in the present application.

Claims

1. A filter for a smoking article, characterized in that, a flavoring agent in a solid state at normal temperature is uniformly added inside the filter for a smoking article, the flavoring agent is composed of at least one natural wax and a flavor ingredient supported in the at least one natural wax, the flavoring agent is composed of 40 to 60% by weight of the at least one natural wax and 40 to 60% by weight of the flavor ingredient, the at least one natural wax is composed of 30 to 70% by weight of cocoa butter and 30 to 70% by weight of avocado butter, the at least one natural wax has a melting point of 30 to 50℃. 2.The filter for a smoking article according to claim 1, characterized in that, the flavoring agent has a melting point of 30 to 80℃. 3.The filter for a smoking article according to claim 1, characterized in that, the flavoring agent has a melting point of 25 to 45℃. 4.The filter for a smoking article according to claim 1, characterized in that, the total weight of the flavoring agent contained in the filter for a smoking article is 1 to 25 mg. 5.The filter for a smoking article according to claim 1, characterized in that, the weight of the flavoring agent per cubic millimeter of the volume of the filter for a smoking article contained in the filter for a smoking article is 1 to 30 ug. 6.The filter for a smoking article according to claim 1, characterized in that, the flavor ingredient includes L-menthol.

7. A smoking article, characterized in that, including: the filter for a smoking article according to any one of claims 1 to 6; and a smoking material section located upstream of the filter for a smoking article. 8.The smoking article according to claim 7, characterized in that, it further includes a tubular filter having a cavity inside and uniformly added with the flavoring agent between the filter for a smoking article and the smoking material section.

9. A method of making a smoking article, characterized by, including the steps of: preparing a flavoring agent by mixing and melting at least one natural wax and a flavor ingredient; adding the melted flavoring agent to a filter rod for a smoking article; and preparing a filter for a smoking article by cutting the filter rod for a smoking article, the flavoring agent is composed of 40 to 60% by weight of the at least one natural wax and 40 to 60% by weight of the flavor ingredient, the at least one natural wax is composed of 30 to 70% by weight of cocoa butter and 30 to 70% by weight of avocado butter, the at least one natural wax has a melting point of 30 to 50℃. 10.The method of preparing a smoking article according to claim 9, characterized in that, the step of adding the melted flavoring agent to the filter rod for a smoking article includes: the step of spraying the melted flavoring agent to the filter rod for a smoking article through a spray-type nozzle. 11.The method of preparing a smoking article according to claim 10, characterized in that, in the step of preparing the flavoring agent and the step of spraying the flavoring agent, the temperature of the melted flavoring agent is 30 to 80℃ and the viscosity of the melted flavoring agent is 10 to 35 cP.

12. The method of claim 9, wherein the flavoring agent is a flavoring agent having a melting point of 25 to 45°C. The flavoring agent includes L-menthol.

13. The method of claim 12, wherein the flavoring agent is a flavoring agent having a melting point of 25 to 45°C. The flavoring agent includes L-menthol.

14. The method of claim 9, wherein the method further comprises a step of winding the smoking material around the upstream end of the filter for a smoking article, The temperature of the molten flavoring agent is 30 to 80°C in the step of preparing the flavoring agent and the step of adding the flavoring agent, The temperature of the solid flavoring agent is 15 to 30°C in the step of winding the filter for a smoking article around the smoking material. ​

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