Superabsorbent material inside the filter

Abstract

A filter section for a smoking article, the filter section comprising a cylindrical shape and extending from a distal end to a mouth end thereby creating a flow path for at least one fluid, the filter section further comprising at least one filter material and a cavity, the cavity being surrounded by the filter material. According to the present invention, the cavity comprises at least two compartments in fluid communication with the filter section and separated by a common frangible barrier, each of the compartments comprising a component for a mixture having hydrophilic properties to absorb water from the fluid flow path, the first compartment comprising at least a first component and the second compartment comprising at least a second component, the first component comprising a dispersed tobacco product and the second component comprising a fluid-absorbing material.

Description

【Technical Field】 【0001】 The present invention relates to a filter section for a smoking article, which includes a cylindrical shape and extends from a distal end to a mouth end, thereby creating at least one flow path for at least one fluid, and further includes at least one filter material and a cavity, the cavity being surrounded by the filter material, regarding the filter section. 【Background Art】 【0002】 Filter sections having cavities are known in the tobacco industry, especially when capsules for flavor enhancement are disposed within those cavities. These capsules often contain flavor compounds such as menthol, fruit flavors or other synthetic flavors. By crushing the fragile outer skin of the capsules, they release the flavored contents, which results in providing additional flavor to the user. 【0003】 Furthermore, filter sections that include a fluid absorption material and thereby extract harmful components from the vapors flowing through the filter section are also known in the tobacco industry. The absorption material typically includes hydrophilicity and thereby absorbs moisture having harmful components from the smoke. 【0004】 Some users prefer a rich and natural flavor of tobacco during smoking. Therefore, filters that emphasize the natural flavor of tobacco during smoking by including tobacco particles inside the filter are also known in the tobacco industry. By contacting the smoke flowing through the filter section, such tobacco particles release additional tobacco flavor to the smoke. Thereby, the natural flavor enhancement of the smoke can be achieved. 【0005】 Mixing tobacco particles with hydrophilic materials is considered in order to provide consumers with a natural tobacco flavor and a smoking experience that minimizes harmful components. However, tobacco particles used inside smoking articles, particularly in the filter section, usually contain moisture because they are not completely dry. Therefore, mixing tobacco particles with hydrophilic materials inside the filter section outside the factory is disadvantageous. Generally, to avoid potential reactions with oxygen and moisture from the air, it is advantageous to store tobacco particles and fluid absorbent materials in storage conditions until immediately before consumption of the smoking article. [Overview of the project] [Problems that the invention aims to solve] 【0006】 Accordingly, an object of the present invention is to provide a filter section that prevents reaction between components during storage, making it possible to mix the components immediately before use of the smoking article to provide natural flavor enhancement and absorption of harmful components. This object is achieved by the filter section of claim 1. Preferred embodiments of the present invention are the subject of the dependent claims. [Means for solving the problem] 【0007】 According to the present invention, the cavity inside the filter section comprises at least two compartments that are in fluid communication with the filter section and are separated by a common easily breakable barrier, each compartment comprising components for a hydrophilic mixture that absorbs water from the fluid channel, the first compartment comprising at least a first component, and the second compartment comprising at least a second component, the first component comprising a dispersed tobacco product, and the second component comprising a fluid-absorbing material. 【0008】 The common easily breakable barrier is preferably waterproof to prevent moisture exchange from tobacco particles to the fluid absorbent material. Preferably, the barrier includes edges and / or is connected to the filter material in a manner that moisture exchange cannot occur around the easily breakable barrier. 【0009】 By simply placing a common, easily breakable barrier inside the filter material, it may be possible to eliminate the need for additional material for a capsule with a surrounding shell or similar compartment. This would make more space available for arranging the components inside the filter section. In addition, since only a common, easily breakable barrier needs to be placed inside the filter section, and there is no need to manufacture an additional capsule, the manufacturing speed is improved compared to filters with capsules. 【0010】 The common easily fractured barrier is preferably made from a two-dimensional material piece, while the capsule must be formed as a spherical three-dimensional body. 【0011】 A common easily breakable barrier may include a membrane through which only air or gas can pass. Preferably, the membrane filters harmful components and / or moisture from the air flowing through it. 【0012】 In a preferred embodiment, the capsule shell and / or common easily breakable barrier is made of a membrane capable of filtering harmful components from smoke passing through a filter element. Preferably, these membranes are dialysis membranes that allow certain components to pass through while blocking others. Semipermeable membranes, in particular, allow air to pass through while other components are filtered out and thus not inhaled by the consumer. Preferably, the membrane has a filtering function. 【0013】 Preferably, the easily breakable barrier can be shattered by the consumer applying force to the area of ​​the filter section in which the barrier is located. The components inside the compartment preferably come into contact with each other and preferably mix with each other upon shattering of the barrier. Preferably, the mixing efficiency of the components can also be improved by moving and / or vibrating the filter section after shattering of the easily breakable barrier. 【0014】 Consumers can break the easily breakable barrier by applying force to a filter segment perpendicular to the longitudinal direction of the smoking item. 【0015】 The barrier may be dissolved by smoke passing by and / or through it, and the dissolution preferably occurs when it is heated or comes into contact with moisture from the smoke. 【0016】 The thickness of the easily fractured barrier preferably includes a maximum thickness in the longitudinal direction of the smoking article of 0.5 mm, more preferably 1 mm, and most preferably 2 mm. The easily fractured barrier further includes a minimum thickness in the longitudinal direction of 0.1 μm, more preferably 10 μm, and most preferably 0.1 mm. 【0017】 The easily breakable barrier preferably includes a two-dimensional shape of a plate having a circular, square, and / or polygonal shape. Thereafter, the barrier is preferably positioned inside the filter material with its plane preferably perpendicular to the longitudinal direction of the filter section. 【0018】 It is conceivable that mixing the components would cause them to begin reacting with each other. Furthermore, it is conceivable that at least one of the components contains an additive that enhances the reaction between the components and / or with the smoke. 【0019】 The easily breakable barrier is not broken by force applied by the consumer and is preferably decomposable by heat, thereby potentially melting at least partially itself when heated. Preferably, the easily breakable barrier is heated by smoke flowing through the filter section and coming into contact with the barrier. Preferably, the melting of the barrier occurs completely automatically during smoking, so that the user does not need to manually break the barrier. 【0020】 The tobacco particles inside the filter section preferably include a powder form. Preferably, the tobacco particles may also be mixed with additives to include a tobacco paste form. The tobacco placed inside the filter section is thought to particularly enhance the consumer's smoking experience by enriching the inhaled vapor with a natural tobacco flavor. The size of the tobacco particles is preferably greater than 10 μm. 【0021】 Tobacco inside at least one compartment may be placed within a capsule, and the tobacco preferably includes a powder form. The capsule containing the tobacco particles may also be made from a membrane material, and the capsule may be permeated by smoke, thereby obtaining an enhanced tobacco flavor without the need to destroy the capsule. The capsule may release only its flavor particles to the smoke passing through it, while solid particles remain inside the capsule. 【0022】 In another embodiment, the capsule contains SAP, and the smoke passing through the capsule is cleaned and dried by moisture and / or harmful components adhering to the SAP inside the capsule. 【0023】 Preferably, the tobacco particles are mixed with cellulose and / or different filter materials within the compartment. It is conceivable that tobacco particles of various sizes be placed inside the filter section. Preferably, the tobacco particles include a powder form, and the tobacco particles have a larger surface area so that they can react better and / or release their flavors. 【0024】 In a preferred embodiment, the fluid-absorbing material inside at least one compartment comprises at least one superabsorbent polymer (SAP). The SAP material inside one compartment may also be a mixture of different SAPs. The SAPs may include different shapes and / or properties. Preferably, at least two SAPs having different shapes and / or properties may be mixed together or are mixed together. This combines the preferred properties of different SAPs. 【0025】 The placement of a SAP is useful for filtering harmful components from the vapor inhaled by the cigarette consumer. Preferably, the SAP absorbs moisture from within the vapor, thereby reducing the amount of harmful components in the vapor that are bound to the moisture and / or dissolved in the moist vapor. 【0026】 SAP is preferably a material that can absorb several times its own weight of liquid. Preferably, when SAP absorbs liquid, its volume increases. Preferably, when SAP absorbs water, its shape and / or properties also change. 【0027】 Preferably, at least one of the SAPs in the filter section includes a powder shape and / or a three-dimensional body shape, preferably a sphere, and / or a cube, and / or any other dimensional shape body. 【0028】 Powder-form SAP preferably becomes a hydrogel by absorbing fluid. Molded and / or solid bodies of SAP preferably maintain their shape by absorbing fluid, but their volume increases according to the amount of absorbed fluid. 【0029】 Preferably, the SAP suitable for use in the filter section is acrylic acid-based. Preferably, SAP can be polyacrylamide-based. Mixtures of both are also conceivable to combine the preferred properties of the materials. 【0030】 Preferably, other organic and / or inorganic SAP materials can also be used in the filter section. Preferably, a core cross-linking agent (CXL) that makes the polymer insoluble in water is added to the polymer. 【0031】 In a preferred embodiment, the SAP inside the filter material is environmentally friendly and / or non-toxic and / or includes biodegradable properties. Thereby, the SAP used can be a polysaccharide-based SAP. Preferably, the entire filter material is environmentally friendly and / or non-toxic and / or biodegradable, thereby reducing problems due to the disposal of the filter section. 【0032】 In a preferred embodiment, SAP includes starch aldehyde and citric acid. Preferably, starch aldehyde and citric acid are mixed in a ratio that results in SAP. 【0033】 In a preferred embodiment, the SAP comprises a polysaccharide in which carboxymethylcellulose is used as a component. Preferably, other cellulose materials can also be used as components. 【0034】 Preferably, the polysaccharide-based SAP has a maximum weight-related swelling ratio of 80 g / g to 100 g / g, preferably 84 g / g to 90 g / g, and most preferably 87 g / g. This allows 1 g of SAP to preferably absorb and / or bind 87 g of fluid. SAPs with different weight-related swelling ratios may be used in the filter section. 【0035】 Preferably, the weight-related swelling ratio of SAP is less than the theoretical maximum swelling ratio, which allows for the use of components with lower purity, thereby reducing the cost of synthesizing SAP. 【0036】 Preferably, the amount of SAP inside the filter section is less than 10%, more preferably less than 7%, and most preferably less than 5%. The SAP inside the compartment of the filter section may be mixed with cellulose fibers. Preferably, thereby the SAP includes powder form. Preferably, the SAP includes different particle sizes and shapes. Preferably, only SAP may be placed inside the compartment without any further additives. 【0037】 In a preferred embodiment, compartments are separated by at least one easily breakable barrier, and the compartments and / or easily breakable barriers are surrounded by an easily breakable sleeve. The easily breakable sleeve may be formed as a hollow cylinder, so that the easily breakable barrier divides the hollow cylinder into at least two compartments. Preferably, this reduces reactions and / or moisture exchange between components within the individual compartments. Preferably, only one compartment is surrounded by the easily breakable sleeve. In particular, a compartment having highly reactive components may be surrounded by the easily breakable sleeve. 【0038】 Preferably, the easily breakable sleeve is breakable when the consumer applies force to break the easily breakable barrier. Preferably, the easily breakable sleeve is also decomposable by heat, thereby melting itself at least partially when heated. Preferably, the easily breakable sleeve is in fluid communication with the smoke inside the filter and is thereby heated by the smoke during the smoking process. 【0039】 The easily breakable sleeve may be positioned inside the compartment within the filter section. The sleeve preferably seals the compartment from the surrounding filter material. The sleeve is preferably positioned by coating the inner wall of the filter material facing the compartment. The coating is preferably applied by spray painting. The sleeve is preferably made from an organic material, and more preferably from starch. 【0040】 The sleeve preferably encloses the internal volume of the compartment and therefore preferably includes the shape of the compartment. The sleeve may include a longitudinal shape, and its longitudinal axis may preferably be arranged parallel to the longitudinal axis of the filter material. Preferably, the sleeve includes a cylindrical, rectangular, or other polygonal shape in its cross-sectional view. 【0041】 The sleeve may have a minimum cross-sectional diameter of 1 mm, more preferably 3 mm, and most preferably 5 mm. The sleeve may have a maximum cross-sectional diameter of 6 mm, more preferably 8 mm, and most preferably 10 mm. 【0042】 In a preferred embodiment, at least one component in one of the compartments has paste and / or fluid properties, and mixing of the components in the compartment by breaking an easily breakable barrier results in a mixture having fluid and / or paste-like viscosity. 【0043】 In a preferred embodiment, at least one compartment contains at least one capsule, the capsule containing further components of the mixture. Preferably, the capsule contains a fluid component that reacts with other components and / or filter material if not stored inside the capsule. It is also preferable that the SAP be placed inside the capsule to prevent the SAP from reacting with moisture before use of the filter section and / or smoking article. Preferably, the capsule contains a fluid that wets the components in the compartment. Preferably, the capsule is placed inside a compartment having tobacco particles and wets the tobacco article to produce a tobacco paste. Preferably, such fluid is an aerosol former and / or flavor enhancer. 【0044】 The capsule material may also include a membrane material. The membrane preferably keeps the internal pressure of the capsule low to allow fluids and preferably air to pass through it. The membrane may function as a filter to filter moisture and / or harmful components from smoke and / or gases passing through it. In a preferred embodiment, the capsule includes at least one easily breakable barrier, thereby dividing the capsule into at least two compartments. Preferably, each compartment inside the capsule contains a different component. Also preferably, the components inside the capsule are mixed when a common easily breakable barrier is broken. The capsule shell may also rupture when the easily breakable barrier is broken, thereby releasing the mixture into the filter material of the filter section. 【0045】 Capsules placed within the filter section compartments may be designed to be breakable by the consumer applying force to the filter section. Preferably, the capsules are positioned inside the filter section so as to be broken at the same time as the easily breakable barrier is positioned. Preferably, the capsules are also positioned so that the consumer can break the barrier and the capsules individually. 【0046】 Preferably, the capsule is also decomposable by heat, thereby at least partially melting itself when heated. Preferably, the capsule is in fluid communication with the smoke inside the filter, thereby being heated by the smoke during the smoking process. 【0047】 In a preferred embodiment, the compartments are arranged such that they are surrounded by smoke and / or vapor flowing through the filter section along the flow path. Preferably, the smoke also flows through the compartments if the easily breakable barrier is broken. Preferably, the smoke then reacts with at least one component inside the compartment. 【0048】 In a preferred embodiment, the mixture is a gel. It is conceivable that by combining at least two components, they may react with each other to form a gel. Preferably, the mixture of components becomes a gel by reacting with smoke during the smoking process. It is also conceivable that the mixture becomes a gel when a capsule containing a fluid component is broken and mixed with the mixture. 【0049】 In a preferred embodiment, the filter material includes a porous structure that allows the mixture to be distributed within the filter section. Preferably, the filter absorbs the mixture. It is thought that the mixture can be dispersed within the filter material by applying force to the filter section and thereby deforming it. Dispersion of the mixture is also possible by shaking and / or moving the filter section. 【0050】 The objective is a method for manufacturing a filter section for a smoking article, wherein the filter section includes a cylindrical shape and extends from the distal end to the mouth end, thereby creating a flow path for at least one fluid, and the filter section further includes at least one filter material such as cellulose acetate or other suitable material, and a cavity, the cavity being surrounded by the filter material, and the method is Steps to provide filter material, A step of forming at least one cavity inside the filter material, Steps include: arranging an easily destructible barrier to separate at least two compartments; A step of placing one component within one of the compartments, The step of placing different components in the other compartment, Steps to form a filter section This can also be achieved by methods including those mentioned above. 【0051】 Preferably, a filter section is formed first, followed by the formation of a cavity. Preferably, a first component is then placed inside the cavity, followed by the placement of a fragile barrier, and finally the second component is placed inside the cavity. 【0052】 In a preferred method, additional easily breakable barriers are arranged to achieve further compartmentation. In this embodiment, two easily breakable barriers preferably divide three compartments having three different components. 【0053】 Furthermore, it is conceivable that more easily breakable barriers be placed inside the filter section, thereby creating further compartments. Preferably, at least one compartment contains a capsule, and preferably the capsule is also heat-soluble. It is conceivable that capsules be placed within at least two compartments. These two capsules preferably have different wall thicknesses, and therefore release their contents with a time delay when exposed to heat. 【0054】 In a preferred embodiment, the compartments are located within the cavities inside the filter material. Preferably, the easily breakable barriers constitute the partitions between the compartments. 【0055】 In a preferred embodiment, the easily breakable sleeve is created by coating the surface of the cavity with a sealing material. Preferably, the easily breakable sleeve has a thinner wall thickness and allows for the storage of a larger amount of ingredients compared to one that fits inside a capsule. Preferably, the easily breakable sleeve is liquid-tight and preferably also functions as a capsule. The easily breakable sleeve can be applied by assembling a filter section having a cavity and then spraying it with a suitable sealing material. 【0056】 In a preferred embodiment, the filter section can be used with a smoking article, and the internal cavity of the filter section comprises at least two compartments that are fluid-communicated to the filter section and are separated by a common easily breakable barrier, each compartment comprising components for a hydrophilic mixture that absorbs water from the fluid passage, the first compartment comprising at least a first component, and the second compartment comprising at least a second component, the first component comprising a dispersed tobacco product, and the second component comprising a fluid-absorbing material. 【0057】 In a preferred embodiment, the fluid-absorbing material inside at least one compartment comprises at least one superabsorbent polymer (SAP). Preferably, the fluid-absorbing material comprises at least one SAP. 【0058】 Preferably, the smoking article includes at least one tobacco section that generates smoke and / or vapor when heated. This smoke, therefore, preferably, flows through a filter section and comes into contact with components inside the filter section. Thereafter, the components are thought to react with the smoke and / or vapor for the intended purpose. 【0059】 Further advantages and embodiments of the present invention are shown in the accompanying drawings. [Brief explanation of the drawing] 【0060】 [Figure 1] This is a smoking article having a filter section according to the present invention. [Figure 2] This is a filter section according to the present invention. [Figure 3] This is a filter section containing a capsule. [Figure 4] This is a filter section containing a mixture. [Modes for carrying out the invention] 【0061】 Figure 1 shows a filter section 1 according to the present invention, which is attached to a tobacco section 14 of a smoking article 2, the tobacco section 14 being attached to the distal end 3 of the filter section. This allows the filter material 5 inside the filter section 1 to be in fluid communication with the tobacco section 14. The filter section 1 itself includes a cavity 6, which is divided into a first compartment 7a and a second compartment 7b by a fragile barrier 12. The first compartment 7a is located on the side of the fragile barrier 12 facing the distal end 3 of the filter section. The second compartment 7b is located on the side of the fragile barrier 12 facing the mouth end 4 of the filter section. 【0062】 Preferably, the first component 8a inside the first compartment 7a is a dispersed tobacco product 10, and the second component 8b inside the second compartment 7b is a fluid absorbent material 11. It is conceivable that the components within the compartments may be varied, such that the first compartment 7a contains the fluid absorbent material 11, and the second compartment 7b contains the dispersed tobacco product 10. 【0063】 In Figure 1, the fluid channel f indicates the direction in which smoke and / or vapors generated within the tobacco section 14 of the smoking item 2 take place when a consumer uses the smoking item 2. The smoke and / or vapors exit the tobacco section 14 along the fluid channel f and enter the distal end 3 of the filter section. As a result, the smoke and / or vapors come into contact with the filter material 5. 【0064】 The filter material 5 includes a cavity 6 in which compartment 7 is located. Smoke and / or vapors flowing through the filter material 5 also come into contact with the cavity 6 and therefore with the components 8 located inside compartment 7 within the cavity 6. Upon contact with the components 8, the smoke and / or vapors react with them and finally exit the smoking article 2 through the mouth end 4 of the filter section. 【0065】 Figure 2 shows the same filter section as shown in Figure 1, but this filter section 1 is not attached to the tobacco section 14 to form the smoking article according to Figure 1. The filter section 1 of Figure 2 can thereby be attached to a variety of other smoking articles, such as self-rolling cigarettes, cigarettes for heated non-combustion devices, or other products for which filtering smoke and / or adding additional flavor is beneficial. 【0066】 The filter section 1 in Figure 2 includes a cavity 6, a compartment 7, a component 8, and an easily breakable barrier 12. The cavity 6 is preferably located in the center of the filter section 1 with respect to the distal end 3 and the oral end 4. The easily breakable barrier 12 is also preferably located in the center of the filter section 1 with respect to the distal end 3 and the oral end 4. Thereafter, the easily breakable barrier 12 preferably divides the cavity 6 equally into two compartments 7, with the first compartment 7a having the same volume as the second compartment 7b. 【0067】 The flow path f in Figure 2 indicates the direction of vapor and / or smoke flow through the filter section 1. Preferably, the smoke and / or vapor are uniformly distributed inside the filter section 1 to react better with the components 8 inside the filter section. 【0068】 Figure 3 shows a filter section 1 having a cavity 6 inside a filter material 5, with a capsule 13 positioned inside the cavity 6. Thereafter, the component 8 is positioned inside the capsule 13 before being positioned inside the filter section 1, rather than being positioned directly inside the cavity 6. The capsule 13 preferably therefore contains at least one easily breakable barrier 12 inside the capsule 13, which thereby separates the component 8 inside the capsule 13. 【0069】 Preferably, the internal space of the capsule 13 is divided into a first compartment 7a and a second compartment 7b, the first compartment 7a containing a first component 8a, and the second compartment 7b containing a second component 8b. The capsule 13 may also include a further easily breakable barrier 12, thereby including more compartments 7, and more preferably more components 8. 【0070】 It is conceivable that at least two capsules 13 exist inside the filter section 1, and it is preferable that each of the capsules 13 thereby contains a different component 8. 【0071】 Preferably, two capsules 13 are arranged inside the filter section 1, the first capsule 13 containing a tobacco product 10, and the second capsule 13 containing a fluid absorbent material 11. 【0072】 Preferably, multiple capsules 13 can be placed within the filter section 1. Preferably, all capsules 13 contain different components 8 that react with each other when the capsules are crushed. 【0073】 Placing at least one capsule 13 inside the filter section is preferable to make the assembly process easier and / or faster. This is thought to be because the filter material 5 can be placed first, and then the pre-assembled capsule 13 can be placed inside the filter material 5. This eliminates the need for stepwise filling and / or assembly of the cavity 6 with the component 8 and the easily breakable barrier 13. 【0074】 Figure 3 further shows the flow path f for steam and / or smoke. Cavity 5 is located in the same place as in Figures 1 and 2, the only difference from the previous figures being that cavity 6 is not directly filled with component 8 but is filled with capsule 13. 【0075】 Figure 4 again shows filter section 1 having filter material 5, fluid channel f, cavity 6 and easily breakable barrier 12, where the easily breakable barrier in Figure 4 is broken, thereby preventing the compartments 7 from separating from each other. Thus, compartments 7a and 7b are in fluid communication with each other, which means that components 8 can mix with each other. 【0076】 In the embodiment shown in Figure 4, a first compartment 7a having a first component 8a and a second compartment 7b having a second component 8b are in fluid communication with each other, and the first component 8a and the second component 8b are mixed with each other to form a mixture 9. 【0077】 The mixture 9 preferably contains a tobacco product 10 and a fluid absorbent material 11. When smoke and / or vapor flows through the filter 1, particularly the filter material 5 having component 8 therein, the smoke and / or vapor comes into contact with the mixture 9 and reacts with it. Thus, the tobacco product 10 enhances the flavor of the smoke and / or vapor, and the fluid absorbent material 11 absorbs moisture and thereby absorbs harmful components from the smoke and / or vapor. 【0078】 Preferably, the mixture 9 comprises a powder form, which results in a higher possible absorption rate of the fluid absorbent material 11 and also results in greater flavor enhancement from the tobacco product 10 within the mixture 9. Preferably, the mixture 9 is thus dispersible within the filter material 5 by vibrating and / or moving the filter section 1. 【0079】 Preferably, the mixture 9 may contain fluid or semi-fluid viscosity, and the fluid viscosity is preferable to allow the filter material 5 to absorb the mixture 9 and disperse it within the filter section 1. 【0080】 Preferably, the mixture 9 also has a paste-like viscosity, and the dispersion of the paste-like viscosity mixture 9 is preferably achieved by the consumer applying force to the filter section 1. 【0081】 Preferably, the mixture 9 in fluid form is at least partially absorbed by the filter material 5. If the mixture includes powder form, the individual particle sizes are preferably small enough to dissipate within the filter material 5. Preferably, the mixture 9 is uniformly distributed inside the filter material 5 so as to include a larger reaction surface for reacting with the smoke and / or vapor. [Explanation of symbols] 【0082】 1. Filter Section 2. Smoking items 3. Distal end of the filter 4. The outer end of the filter 5. Filter materials 6 Cavity 7 plots 7a First section 7b Second section Components within section 8 8a First component 8b Second component 9 mixture 10 Tobacco Products 11 Fluid-absorbing materials 12 Easily breakable barriers 13 capsules 14. Tobacco section of smoking articles f Fluid flow path

Claims

[Claim 1] A filter section (1) for a smoking article (2), comprising a cylindrical shape and extending from a distal end (3) to a mouth end (4), thereby creating a flow path (f) for at least one fluid, further comprising at least one filter material (5) and a cavity (6), the cavity (6) being surrounded by the filter material (5), wherein the cavity (6) is in fluid communication with the filter section (1) and is separated by a common easily breakable barrier (12) A filter section (1) comprising at least two compartments (7a, b) that are blocked, each of the compartments (7a, b) comprising a component (8) for a hydrophilic mixture (9) that absorbs water from the flow path (f), the first compartment (7a) comprising at least a first component (8a), and the second compartment (7b) comprising at least a second component (8b), the first component (8a) comprising a dispersed tobacco product (10), and the second component (8b) comprising a fluid absorbent material (11). [Claim 2] The filter section (1) according to claim 1, characterized in that the fluid absorbing material (11) inside at least one of the compartments (7a, b) comprises at least one superabsorbent polymer (SAP) (11). [Claim 3] The filter section (1) according to claim 2, characterized in that the SAP (11) is a reaction product of starchaldehyde and citric acid. [Claim 4] The filter section (1) according to claim 2 or 3, characterized in that the SAP (11) includes a polysaccharide in which carboxymethylcellulose is used as an ingredient. [Claim 5] The filter section (1) according to any one of claims 1 to 4, characterized in that the compartments (7a, b) are separated by at least one easily breakable barrier (12), and the compartments (7a, b) and / or the easily breakable barrier (12) are surrounded by an easily breakable sleeve. [Claim 6] The filter section (1) according to claim 1, wherein at least one of the compartments (7a, b) includes at least one capsule (13), the capsule (13) containing further components of the mixture (9). [Claim 7] The filter section (1) according to any one of claims 1 to 6, characterized in that the compartments (7a, b) are arranged such that they are surrounded by smoke and / or vapor flowing through the filter section (1) along the flow path (f). [Claim 8] The filter section (1) according to claim 1, characterized in that the mixture (9) is a gel. [Claim 9] The filter section (1) according to any one of claims 1 to 8, characterized in that the filter material (5) includes a porous structure that allows the mixture (9) to be distributed inside the filter section (1). [Claim 10] A method for manufacturing a filter section (1) for a smoking article (2), wherein the filter section (1) includes a cylindrical shape and extends from a distal end (3) to a mouth end (4) to create a flow path (f) for at least one fluid, the filter section (1) further includes at least one filter material (5) such as cellulose acetate or other suitable material, and a cavity (6), the cavity (6) being surrounded by the filter material (5), and the method is The steps include providing the filter material (5), The steps include forming at least one cavity (6) inside the filter material (5), The steps include arranging an easily breakable barrier (12) to separate at least two sections (7a, b), The steps include placing one component (8a) within one of the compartments (7a), The steps include placing a different component (8b) in the other compartment (7b), The steps of forming the filter section (1), Includes, A method characterized by the placement of additional easily breakable barriers (12c) to achieve further compartments (7c). [Claim 11] The method according to claim 10, characterized in that the compartments (7a, b) are arranged inside the cavity (6) inside the filter material (5). [Claim 12] The method according to claim 10 or 11, characterized by creating an easily breakable sleeve by coating the surface of the cavity (6) with a sealing material. [Claim 13] A smoking article (2) having a filter section (1) according to any one of claims 1 to 9, wherein the cavity (6) comprises at least two compartments (7a, b) that are in fluid communication with the filter section (1) and are separated by a common easily breakable barrier (12), each of the compartments (7a, b) comprising a component (8) for a hydrophilic mixture (9) that absorbs water from the flow path (f), the first compartment (7a) comprising at least a first component (8a), and the second compartment (7b) comprising at least a second component (8b), the first component (8a) comprising a dispersed tobacco product (10), and the second component (8b) comprising a fluid absorbent material (11). [Claim 14] The smoking article (2) according to claim 13, characterized in that the fluid-absorbing material (11) inside at least one of the compartments (7a, b) comprises at least one superabsorbent polymer (SAP) (11).

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