Air passing assembly, filter tip and cigarette

Abstract

The utility model relates to an air passing assembly, a filter tip and a cigarette, and the air passing assembly comprises a body which is of a containing cavity structure defined by an outer wall, and the body is used for occupying the volume of a filter stick; the perfume solution is arranged in the accommodating cavity of the body; in the first direction, at least the outer wall part of the upstream end and the outer wall part of the downstream end of the body are made of a first material, and the rest part of the body is made of a second material; wherein the first direction is the flowing direction of smoke in the filter stick, and the first material is a material with waterproof and breathable performance. According to the gas passing assembly provided by the embodiment of the invention, the gas passing assembly is directly arranged in the filter stick, when the smoke is sucked, the smoke can flow through the containing cavity of the body, so that the smoke is filtered by the perfume solution in the containing cavity, the fragrance can be increased, and the effect of enhancing the fragrance of the smoke is achieved; the wet smoke can be achieved, the content of harmful substances in the smoke can be effectively reduced, and the smoking taste of the smoke is obviously improved.

Description

Technical Field

[0001] The present application relates to the technical field of cigarettes, and in particular to a gas permeation component, a filter tip and a cigarette. Background Art

[0002] In order to enhance the competitiveness of cigarette products, cigarette factories are also constantly improving their cigarette products. In addition to improvements in taste and packaging, they have also made a series of technological innovations to cigarette filter rods. For example, an improved method of adding popping beads to filter rods is used. Various types of flavoring liquids can be added to the popping beads. The popping beads are set in the filter rod. When smoking a cigarette, the filter rod is squeezed to squeeze and break the popping beads inside the filter rod, and then the flavoring liquid is released into the filter rod fibers. When the smoke passes through, it can enhance the flavor of the smoke, thereby improving the taste of smoking. Although this type of cigarette product with added popping beads can enhance the flavor of the smoke to a certain extent, it is limited by the filtering effect of the filter rod itself on the smoke, and the popping beads cannot filter out harmful substances in the smoke. Utility Model Content

[0003] The purpose of this application is to provide a gas filter component, a filter tip and a cigarette, which can improve the filtering effect of smoking smoke and achieve the purpose of enhancing the flavor and retaining the moisture of the smoke, thereby effectively solving the shortcomings of the existing technology.

[0004] To this end, on one hand, an embodiment of the present application provides a gas flow assembly, including:

[0005] The body is a structure enclosed by an outer wall to form a cavity, and the body is used to occupy the volume of the filter rod;

[0006] A fragrance solution is disposed in the accommodating cavity of the body;

[0007] Along the positive direction of the first direction, at least the outer wall portion of the upstream end and the outer wall portion of the downstream end of the body are made of the first material, and the rest of the body is made of the second material;

[0008] The positive direction of the first direction is the flow direction of smoke in the filter rod, the first material is a material with water-proof and air-permeable properties, and the second material is a material with water-proof and air-tight properties.

[0009] In some possible implementations, the body includes a side wall and two end covers, the side wall encloses a cylindrical structure extending along a first direction, the end covers respectively seal the two ends of the side wall in the first direction, the end covers are made of a first material, and the side wall is made of a second material.

[0010] In some possible implementations, the side wall is at least partially made of a transparent material.

[0011] In some possible implementations, the volume of the fragrance solution is no greater than 50% of the volume of the accommodating cavity of the body.

[0012] In some possible implementations, the first material is a microporous membrane.

[0013] In some possible implementations, the fragrance solution includes the following components in parts by mass:

[0014] Water: 20-100 parts;

[0015] Propylene glycol: 10-50 parts;

[0016] Water-soluble spices: 10-30 parts.

[0017] On the other hand, an embodiment of the present application further provides a filter, which includes the above-mentioned air permeation assembly and further includes:

[0018] The cigarette filter rod has an axial direction that is a first direction, and the body is used to occupy the volume of the cigarette filter rod.

[0019] In some possible implementations, along the first direction, the body is located at the end or the middle of the cigarette filter rod.

[0020] In some possible implementations, the cigarette filter rod includes a first section and a second section. Along a first direction, one end of the side wall is axially connected to the first section, and the other end of the side wall is axially connected to the second section.

[0021] In some possible implementations, the outer diameter of the side wall is the same as the outer diameter of the cigarette filter rod.

[0022] In some possible implementations, a connecting layer is further included, and the connecting layer circumferentially wraps around the cigarette filter rod and the outer side of the side wall to connect the cigarette filter rod and the body.

[0023] In some possible implementations, the connection layer is made of a transparent material.

[0024] On the other hand, the embodiments of the present application further provide a cigarette, comprising the above-mentioned filter tip, and further comprising:

[0025] The tobacco cut segment is axially connected to the first segment or the second segment through the shaping layer.

[0026] According to the air permeation assembly provided in the embodiment of the present application, when producing cigarettes, the air permeation assembly is directly set in the filter rod. When smoking, the smoke can flow through the accommodating cavity of the main body, so that the smoke is filtered by the flavor solution in the accommodating cavity, which can increase the aroma and achieve the effect of adding flavor to the smoke. In addition, since the smoke is filtered through the solution, the smoke can be moistened. Under the action of the solution filtration, the content of harmful substances in the inlet smoke can also be effectively reduced, and the smoking taste of the smoke can be significantly improved. BRIEF DESCRIPTION OF THE DRAWINGS

[0027] Figure 1 A schematic diagram of the use status of a gas permeation assembly provided in one embodiment of the present application;

[0028] Figure 2 A schematic diagram of a gas permeation assembly in use according to another embodiment of the present application;

[0029] Figure 3 A schematic structural diagram of a gas permeation assembly provided in one embodiment of the present application;

[0030] Figure 4 A schematic structural diagram of a gas permeation assembly provided in another embodiment of the present application;

[0031] Figure 5 Schematic diagram of the installation position of the gas flow assembly provided in one embodiment of the present application Figure 1 ;

[0032] Figure 6 Schematic diagram of the installation position of the gas flow assembly provided in one embodiment of the present application Figure 2 ;

[0033] Figure 7 A schematic structural diagram of a gas permeation assembly provided in one embodiment of the present application;

[0034] Figure 8 for Figure 7 Schematic diagram of the structure after partial dissection;

[0035] Figure 9 A schematic diagram of the structure of the filter provided in an embodiment of the present application;

[0036] Figure 10 This is an exploded view of the filter provided in an embodiment of the present application after removing the connecting layer;

[0037] Figure 11 A schematic diagram of the structure of a cigarette provided in an embodiment of the present application;

[0038] Figure 12 Schematic diagram of cigarette usage status provided in the embodiment of this application Figure 1 ;

[0039] Figure 13 Schematic diagram of cigarette usage status provided in the embodiment of this application Figure 2 ;

[0040] Figure 14 This is a schematic structural diagram of a cigarette provided in another embodiment of the present application. DETAILED DESCRIPTION

[0041] To make the purpose, technical solutions, and advantages of the embodiments of this application more clear, the technical solutions in the embodiments of this application will be clearly and completely described below in conjunction with the drawings in the embodiments of this application. Obviously, the described embodiments are part of the embodiments of this application, not all of the embodiments. Based on the embodiments in this application, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of this application.

[0042] like Figures 1-14 As shown, the embodiment of the present application provides an air permeation component, which is used in cigarette products, preferably in the filter rod of a cigarette. The air permeation component is arranged in the filter rod to process the smoke flowing through. At this stage, the improvement of cigarette products is mainly made on the filter rod. For example, popping beads are added to the filter rod. When smoking a cigarette, the filter rod is squeezed on the outside of the filter rod so that the popping beads inside the filter rod are squeezed and broken, so as to release the flavoring liquid inside the popping beads into the filter rod fibers, which can enhance the flavor of the smoke when smoking. By adding different flavors to the popping beads, different flavors of the smoke can be achieved. However, this type of popping bead cigarette also has certain problems in practice. Due to the filtering effect of the filter rod itself on the smoke, the popping beads cannot filter out harmful substances in the smoke. The air permeation component provided in the embodiment of the present application, on the one hand, improves the taste of the smoke, and on the other hand, improves the filtering effect of the smoke, thereby reducing harmful substances in the inlet smoke.

[0043] The gas permeation component includes a main body 100 and a flavor solution 200. The main body 100 has a structure in which an outer wall encloses a cavity. The outer wall is in an enclosed shape and encloses a cavity. The main body 100 is used to be set in a filter rod and occupy the volume of the filter rod. The flavor solution 200 is set in the cavity of the main body 100. The flavor solution 200 is in the form of a solution, in which corresponding flavors are added according to the taste requirements of the cigarette.

[0044] Along the positive direction of the first direction, at least the outer wall portion of the upstream end 11 and the outer wall portion of the downstream end 12 on the main body 100 are made of the first material, and the remaining portion of the main body 100 is made of the second material. The positive direction of the first direction is the flow direction of the smoke in the filter rod. Moreover, the first material is a material with water-proof and breathable properties, and the second material is a material with water-proof and gas-proof properties.

[0045] In this embodiment, the accommodating cavity enclosed by the entire outer wall can restrict the solution and prevent the solution from flowing out. The outer wall part of the upstream end 11 of the main body 100 and the outer wall part of the upstream and downstream ends 12 of the main body 100 are made of water-proof and breathable materials, which can realize the passage of air. Therefore, after the main body 100 is set in the filter rod, the main body 100 is connected to the filter rod in series through the upstream end 11 of the main body 100 and the downstream end 12 of the main body 100, so that the smoke flowing in the filter rod enters the accommodating cavity of the main body 100 from the outer wall of the upstream end 11 of the main body 100, and then the smoke passes through the outer wall of the main body 100. The smoke is filtered through the fragrance solution 200, which is a mixture of water, propylene glycol and water-soluble fragrances. On the one hand, the fragrance can moisturize the smoke, improve the taste of the smoke at the entrance, and reduce the irritation of the smoke. On the other hand, the water-soluble fragrance can also enhance the fragrance of the smoke, making the smoke taste more diverse. In addition, harmful substances such as tar and carbon monoxide in the smoke can be filtered out through solution filtration, which effectively improves the filtering effect of the smoke and reduces the content of harmful substances in the smoke.

[0046] In this embodiment, the filter rod has a cylindrical structure. Under the action of the fiber bundle in the filter rod, the smoke circulates in the filter rod along the axial direction. After the main body 100 is set in the filter rod, the smoke flowing in the filter rod can enter the accommodating cavity of the main body 100 and then flow out, so that the smoke is filtered by the flavor solution 200 in the accommodating cavity.

[0047] Preferably, the volume of the fragrance solution 200 filled in the receiving cavity of the body 100 is no greater than 50% of the volume of the receiving cavity of the body 100, that is, the amount of fragrance solution 200 filled does not exceed half the volume of the receiving cavity of the body 100. In this way, when smoking, the height of the outer wall of the upstream end 11 of the body 100 is lower than the height of the outer wall of the downstream end 12 of the body 100, so that the fragrance solution 200 in the receiving cavity can submerge the outer wall of the upstream end 11 of the body 100. As a result, the lower portion of the receiving cavity is partially filled with fragrance solution 200, and the upper portion of the receiving cavity is partially filled with air. In this way, smoke can enter the receiving cavity through the outer wall of the upstream end 11 of the body 100 and be filtered by the fragrance solution 200. The smoke is then discharged through the outer wall of the downstream end 12 of the body 100, thereby achieving aroma enhancement, moisturizing, and filtration of the smoke.

[0048] In some embodiments, the first material is a microporous membrane, preferably a PTFE membrane, with multiple micropores arranged on the PTFE membrane, the micropore diameter is 0.01-10 microns, and the porosity is 85%-90%, achieving a water-proof and breathable effect. The second material is a PE layer, which is impermeable to water and air, and has a thickness of 0.2-0.5 mm. The first material and the second material can be connected by hot melting.

[0049] In some examples, the flavor solution 200 includes water, propylene glycol, and water-soluble flavors, with the mass proportion of water being 20-100 parts, the mass proportion of propylene glycol being 10-50 parts, and the mass proportion of water-soluble flavors being 10-30 parts. The water-soluble flavors can be selected according to the design requirements of the cigarette product, for example, menthyl acetate, fruit flavor extract, etc.

[0050] In one embodiment, the main body 100 is spherical as a whole. Figure 1 As shown, the filter stick is arranged vertically. After the body 100 is arranged in the filter stick, the smoke flows from bottom to top in the filter stick. The diameter of the body 100 is the same as that of the filter stick. The axis of the filter stick passes through the spherical center of the body 100. The outer wall of the upstream end 11 of the body 100 is arranged downward, and the outer wall of the downstream end 12 of the body 100 is arranged upward. In this way, the fragrance solution 200 inside the body 100 can filter the smoke. In addition, the body 100 can also be in the shape of an oblate sphere, such as Figure 2 As shown, the filter rod is arranged vertically, and the upstream end 11 and the downstream end 12 of the body 100 are close to each other to form a flat shape. The projection of the body 100 in the horizontal plane is a circle, and the diameter of the circle is the same as the diameter of the filter rod. The body 100 is arranged in the filter rod. Similarly, the filtration of the smoke can also be achieved. Figure 1 and Figure 2 The upward arrow in the middle shows the direction of flue gas flow.

[0051] Preferably, the outer wall of the body 100 includes a side wall 101 and two end caps 102. The side wall 101 encloses a cylindrical structure extending along the first direction. The cross-section of the cylindrical structure can be triangular or rectangular. Preferably, the cross-section of the cylindrical structure is circular. The side wall 101 encloses a cylindrical structure. The two end caps 102 respectively cover the two ends of the side wall 101 in the first direction. The end caps 102 are circular, that is, the two end caps 102 respectively cover the two end openings of the cylindrical structure. The end caps 102 can be used to seal the end of the cylindrical structure. Figure 4 As shown, the end cap 102 can also be close to the middle of the cylindrical structure, and the outer edge of the end cap 102 is connected to the inner wall of the enclosed circular structure, such as Figure 3 shown.

[0052] The end cap 102 is made of the first material and the side wall 101 is made of the second material. Thus, the side wall 101 is water-proof and air-proof, and the end cap 102 is water-proof and air-permeable. The space enclosed by the side wall 101 and the end caps 102 is the accommodating cavity of the main body 100 .

[0053] The sidewall 101 is made of a biodegradable or photodegradable material such as PLA, PBAT, PBS, PHA, PCL, PE or PP.

[0054] In this embodiment, the outer structure of the main body 100 is more compatible with the outer structure of the filter rod, and the production and assembly are more convenient. More preferably, at least a part of the side wall 101 is made of transparent material, and the interior can be observed through the transparent part, thereby improving the visibility and playability of the suction process and enhancing the sense of interactivity of the suction process. The side wall 101 is preferably made of transparent material as a whole to facilitate comprehensive and intuitive observation. For example, the side wall 101 can be made of transparent PE material.

[0055] An embodiment of the present application also provides a filter tip, which includes the above-mentioned air permeation component and a cigarette filter rod 500. The axial direction of the cigarette filter rod 500 is the first direction. The main body 100 is arranged in the cigarette filter rod 500. The main body 100 is used to occupy the volume of the cigarette filter rod 500. The smoke flows in the cigarette filter rod 500 along the axial direction of the cigarette filter rod 500. The flow direction of the smoke is the positive direction of the first direction.

[0056] As for the location of the main body 100, the main body 100 can be arranged at one end of the cigarette filter rod 500, such as Figure 5 As shown, or the body 100 is arranged in the middle of the cigarette filter rod 500, as shown Figure 6 shown.

[0057] Preferably, the main body 100 is arranged in the middle of the cigarette filter rod 500 as an example for explanation. The cigarette filter rod 500 includes a first section 21 and a second section 22. Along the first direction, one end of the side wall 101 is axially connected to the first section 21, and the other end of the side wall 101 is axially connected to the second section 22. More preferably, the outer diameter of the side wall 101 is the same as the outer diameter of the cigarette filter rod 500. In this way, the first section 21, the main body 100 and the third section are axially connected in series to form a cylindrical structure with a flush outer periphery. A connecting layer 30 can be provided, and the connecting layer 30 is wrapped around the outside of the cylindrical structure for auxiliary connection, that is, the connecting layer 30 is wrapped around the outside of the cigarette filter rod 500 and the side wall 101 to connect the cigarette filter rod 500 and the main body 100 together. The connecting layer 30 is preferably made of a transparent material, and the connecting layer 30 can be a PET film or transparent paper.

[0058] In this embodiment, the first section 21, the body 100 and the second section 22 are connected in sequence, and are described vertically in the first direction. The first section 21 is at the top, the bottom end of the first section 21 is sealed to the top end of the side wall 101, the bottom end of the side wall 101 is sealed to the top end of the second section 22, an end cap 102 is sealed between the top end of the side wall 101 and the bottom end of the first section 21, and the other end cap 102 is sealed between the bottom end of the side wall 101 and the top end of the second section 22. The connecting layer 30 is wrapped around the outer sides of the section 21, the side wall 101, and the second section 22 to form a filter. A flavoring solution 200 is placed in the space enclosed by the side wall 101 and the two end caps 102. The top of the first section 21 is provided with an inlet for suction. Under the suction force, the smoke flows upward in the second section 22 and passes through the end cap 102 at the bottom of the side wall 101. After being filtered by the flavoring solution 200, the smoke enters the first section 21 through the end cap 102 at the top of the side wall 101, thus achieving filtered suction of the smoke.

[0059] The first section 21 and the second section 22 are preferably made of acetate fiber.

[0060] The embodiment of the present application further provides a cigarette, comprising the above-mentioned filter tip, and also comprising a tobacco segment 40, the tobacco segment 40 being axially connected to the first segment 21 or the second segment 22, the first segment 21, the body 100 and the second segment 22 being axially connected together in sequence, when the tobacco segment 40 and the second segment 22 are connected, in one embodiment, the outer wrapped connecting layer 30 may extend outwardly from a portion of the outer end of the second segment 22, and the connecting layer 30 of the extended portion may be sleeved on a portion of the end portion of the tobacco segment 40 to complete the connection, in another embodiment, the connection The layer 30 just completely wraps the first section 21, the main body 100 and the second section 22. The two ends of the connecting layer 30 extend to the outer ends of the first section 21 and the outer ends of the second section 22 respectively. The second section 22 and the tobacco segment 40 are connected by twisted cigarette paper at the connection point. The twisted cigarette paper wraps around the part of the connection point between the second section 22 and the tobacco segment 40. A part of the twisted cigarette paper is put on the outside of the end of the connecting layer 30, and the other part of the twisted cigarette paper is put on the outside of the end of the tobacco segment 40, thereby realizing the connection between the second section 22 and the tobacco segment 40.

[0061] In a preferred embodiment, Figure 14As shown, the connecting layer 30 is made of a transparent material as a whole, and the connecting layer 30 just completely wraps the first section 21, the main body 100 and the second section 22. Axially, the two ends of the connecting layer 30 extend to the outer end of the first section 21 and the outer end of the second section 22 respectively. A molding layer 60 is provided on the outer side of the first section 21 and the second section 22. The molding layer 60 on the first section 21 just wraps the first section 21, and the molding layer 60 on the second section 22 wraps the second section 22. The outer end of the second section 22 is used to connect with the tobacco segment 40. The molding layer 60 on the second section 22 extends outward to the outer end of the second section 22, and the extended molding layer 60 part is used to be sleeved on the outer side of the tobacco segment 40.

[0062] It should be noted that the first section 21, the body 100, the second section 22 and the tobacco segment 40 are connected in sequence, and the smoke generated by the tobacco segment 40 flows through the second section 22, the body 100 and the first section 21 in sequence, and then enters the smoke inlet. The end cover 102 is a microporous membrane, and the micropores on the end cover 102 are evenly arranged. When smoking a cigarette, for the end cover 102 on the body 100 close to the tobacco segment 40, at least part of the micropores are submerged by the flavoring solution 200, and some micropores are submerged by the flavoring solution 200. 00 tobacco foam can achieve the filtration of smoke. For the end cap 102 on the main body 100 away from the tobacco segment 40, at least part of the micropores need not be submerged by the flavor solution 200. The end cap 102 has micropores that are not submerged by the flavor solution 200 to achieve the circulation of smoke. The preferred state is: the end cap 102 on the main body 100 close to the tobacco segment 40 is completely submerged in the flavor solution 200, and the end cap 102 on the main body 100 away from the tobacco segment 40 does not contact the flavor solution 200. Figure 12 and Figure 13 The state shown, and the tilt angle is Figure 12 Shown and Figure 13 In the state between the two shown in FIG, the smoke can be filtered better. Therefore, when smoking the cigarette, the tobacco segment 40 should be kept tilted downward as much as possible.

[0063] Sample 1 preparation:

[0064] PE material is used as the material of the side wall 101, and injection molding is made into a cylindrical structure with a cylindrical circumference of 19.6 mm and a height of 10 mm. The fragrance solution 200 is added to the inside of the side wall 101 and sealed by two end caps 102. The end caps 102 are PTFE microporous membranes to form the body 100. Among them, the fragrance solution 200 includes, in parts by mass:

[0065] Water: 80 parts;

[0066] Propylene glycol: 10 parts;

[0067] Water-soluble spices: 10 parts.

[0068] The first section 21, the body 100, the second section 22 and the tobacco section 40 are axially connected in sequence. The first section 21 and the second section 22 are both made of acetate fiber to obtain cigarettes, which are placed in a constant temperature and humidity chamber for equilibrium.

[0069] Sample 2 preparation:

[0070] PE material is used as the material of the side wall 101, and injection molding is made into a cylindrical structure with a cylindrical circumference of 19.6 mm and a height of 10 mm. The fragrance solution 200 is added to the inside of the side wall 101 and sealed by two end caps 102. The end caps 102 are PTFE microporous membranes to form the body 100. Among them, the fragrance solution 200 includes, in parts by mass:

[0071] Water: 60 parts;

[0072] Propylene glycol: 20 parts;

[0073] Water-soluble spices: 20 parts.

[0074] The first section 21, the body 100, the second section 22 and the tobacco section 40 are axially connected in sequence. The first section 21 and the second section 22 are both made of acetate fiber to obtain cigarettes, which are placed in a constant temperature and humidity chamber for equilibrium.

[0075] Sample 3 preparation:

[0076] PE material is used as the material of the side wall 101, and injection molding is made into a cylindrical structure with a cylindrical circumference of 19.6 mm and a height of 10 mm. The fragrance solution 200 is added to the inside of the side wall 101 and sealed by two end caps 102. The end caps 102 are PTFE microporous membranes to form the body 100. Among them, the fragrance solution 200 includes, in parts by mass:

[0077] Water: 50 parts;

[0078] Propylene glycol: 30 parts;

[0079] Water-soluble spices: 20 parts.

[0080] The first section 21, the body 100, the second section 22 and the tobacco section 40 are axially connected in sequence. The first section 21 and the second section 22 are both made of acetate fiber to obtain cigarettes, which are placed in a constant temperature and humidity chamber for equilibrium.

[0081] Sample 4 preparation:

[0082] PE material is used as the material of the side wall 101, and injection molding is made into a cylindrical structure with a cylindrical circumference of 19.6 mm and a height of 10 mm. The fragrance solution 200 is added to the inside of the side wall 101 and sealed by two end caps 102. The end caps 102 are PTFE microporous membranes to form the body 100. Among them, the fragrance solution 200 includes, in parts by mass:

[0083] Water: 50 parts;

[0084] Propylene glycol: 20 parts;

[0085] Water-soluble spices: 30 parts.

[0086] The first section 21, the body 100, the second section 22 and the tobacco section 40 are axially connected in sequence. The first section 21 and the second section 22 are both made of acetate fiber to obtain cigarettes, which are placed in a constant temperature and humidity chamber for equilibrium.

[0087] Sample 5 preparation:

[0088] The tobacco segment 40 is axially connected to a common acetate filter rod, the length of which is equal to the sum of the lengths of the first section 21 and the second section 22 , to obtain a cigarette, which is then placed in a constant temperature and humidity chamber for equilibrium.

[0089] In accordance with GB5606.4-2005 Cigarettes Part 4: Sensory Technical Requirements, the above-mentioned balanced cigarettes were subjected to sensory evaluation by no less than 7 evaluators, and the number of evaluators must be odd. The evaluation results are shown in the following table.

[0090] luster aroma coordination Miscellaneous gases Stimulate Aftertaste Total score Sample 5 4.5 24.0 5.0 6.5 13.0 19.0 72 Sample 1 4.5 27.0 5.0 9.0 16.5 21.5 83.5 Sample 2 4.5 27.0 5.5 9.5 17.0 21.5 85 Sample 3 4.5 27.0 5.0 9.5 17.0 21.5 84.5 Sample 4 4.5 27.0 5.5 9.5 16.5 22.0 85

[0091] Cigarette Sample Sensory Evaluation Table

[0092] From the data in the above table, Sample 1, Sample 2, Sample 3 and Sample 4 are significantly better than Sample 5 in terms of aroma, miscellaneous smell, irritation and aftertaste, indicating that the air filter component can effectively filter the smoke, enhance the aroma and moisturize the smoke, and reduce the irritating taste of the smoke.

[0093] It should be noted that references in this specification to "one embodiment," "an embodiment," "an exemplary embodiment," "some embodiments," and the like indicate that the described embodiment may include a particular feature, structure, or characteristic, but not necessarily every embodiment includes that particular feature, structure, or characteristic. Furthermore, such phrases do not necessarily refer to the same embodiment. Furthermore, when a particular feature, structure, or characteristic is described in conjunction with an embodiment, it is within the knowledge of those skilled in the art to implement such feature, structure, or characteristic in conjunction with other embodiments, whether explicitly described or not.

[0094] It should be readily understood that “on,” “above,” and “over” in this disclosure should be interpreted in the broadest manner, such that “on” means not only “directly on something,” but also includes “on something” with intervening features or layers therebetween, and “above” or “over” includes not only the meaning of “above” or “over,” but also includes “above” or “over” with no intervening features or layers therebetween (i.e., directly on something).

[0095] Additionally, spatially relative terms, such as "below," "beneath," "beneath," "above," and the like, may be used herein for ease of description to describe the relationship of one element or feature to other elements or features as depicted in the figures. Spatially relative terms are intended to encompass different orientations of the device in use or operation in addition to the orientation depicted in the figures. The device may be otherwise oriented (rotated 90 degrees or at other orientations), and the spatially relative descriptors used herein should be interpreted accordingly.

[0096] It should be noted that, in this document, relational terms such as "first" and "second" are used only to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any actual relationship or order between these entities or operations. Moreover, the terms "comprises," "comprising," or any other variations thereof are intended to cover non-exclusive inclusion, so that a process, method, article, or device comprising a series of elements includes not only those elements, but also other elements not explicitly listed, or elements inherent to such process, method, article, or device. In the absence of further limitations, an element defined by the phrase "comprising a ..." does not exclude the presence of other identical elements in the process, method, article, or device comprising the element.

[0097] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present application, rather than to limit them. Although the present application has been described in detail with reference to the aforementioned embodiments, those skilled in the art should understand that they can still modify the technical solutions described in the aforementioned embodiments, or make equivalent replacements for some or all of the technical features therein. These modifications or replacements do not deviate the essence of the corresponding technical solutions from the scope of the technical solutions of the embodiments of the present application.

Claims

1. A gas permeation component, characterized in that: include: The body is a structure enclosed by an outer wall to form a cavity, and the body is used to occupy the volume of the filter rod; A fragrance solution is disposed in the accommodating cavity of the body; Along the positive direction of the first direction, at least the outer wall portion of the upstream end and the outer wall portion of the downstream end of the body are made of the first material, and the rest of the body is made of the second material; The positive direction of the first direction is the flow direction of smoke in the filter rod, the first material is a material with water-proof and air-permeable properties, and the second material is a material with water-proof and air-tight properties.

2. The gas flow assembly according to claim 1, characterized in that: The body includes a side wall and two end covers. The side wall encloses a cylindrical structure extending along a first direction. The two end covers respectively seal the two ends of the side wall in the first direction. The end covers are made of a first material and the side wall is made of a second material.

3. The gas flow assembly according to claim 2, characterized in that: The side wall is at least partially made of a transparent material.

4. The gas flow assembly according to claim 1, characterized in that: The volume of the fragrance solution is no more than 50% of the volume of the accommodating cavity of the body.

5. The gas flow assembly according to claim 1, characterized in that: The first material is a microporous membrane.

6. A filter comprising the air permeation assembly according to any one of claims 1 to 5, characterized in that: Also includes: The cigarette filter rod has an axial direction that is a first direction, and the body is used to occupy the volume of the cigarette filter rod.

7. The filter according to claim 6, characterized in that: Along the first direction, the body is located at the end or the middle of the cigarette filter rod.

8. The filter according to claim 6, characterized in that: The cigarette filter rod comprises a first section and a second section. Along a first direction, one end of the side wall is axially connected to the first section, and the other end of the side wall is axially connected to the second section.

9. The filter according to claim 8, characterized in that: The outer diameter of the side wall is the same as the outer diameter of the cigarette filter rod.

10. The filter according to claim 9, characterized in that: The invention also comprises a connecting layer, which circumferentially wraps around the cigarette filter rod and the outer side of the side wall to connect the cigarette filter rod and the body.

11. The filter according to claim 10, characterized in that: The connecting layer is made of transparent material.

12. A cigarette comprising the filter according to any one of claims 6 to 11, characterized in that: Also includes: The tobacco cut segment is axially connected to the first segment or the second segment through the shaping layer.

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