Cigarette filter stick and cigarette

Abstract

The cigarette filter stick comprises a paper material (10) and forming paper (20), the paper material (10) comprises a first paper section (11) and a second paper section (12), the first paper section (11) comprises a plurality of concave parts (111) and a plurality of convex parts (112), the surface of the second paper section (12) is flat, the paper material (10) forms an inner core of the cigarette filter stick (1), and the forming paper (20) is wrapped outside the inner core. The cigarette comprises the cigarette filter stick. According to the utility model, the hardness and the draw resistance of the cigarette filter stick can be effectively improved.

Description

Technical Field

[0001] The utility model relates to the technical field of tobacco, in particular to a cigarette filter rod and a cigarette. Background Art

[0002] Most of the filter materials currently used are made of diacetate fiber tow, which mainly reduces particulate matter in smoke through mechanical filtration. Although it can filter out a large number of harmful components, a large part of the harmful components are still inhaled into the human body. The resources of diacetate fiber tow are limited, the raw material requirements are strict, the process is complex, the investment is large, the process is long, and the nature is stable and difficult to degrade. The cigarette butts after smoking are difficult to degrade, thus causing harm to the natural environment. A large number of cigarette butts have become an ecological problem.

[0003] In addition to acetate filter rods, paper has been used as a filling material for cigarette filter rods for many years. Compared with acetate filter rods, paper filter rods have many advantages such as good adsorption, high tar and nicotine retention efficiency, obvious effect of reducing tar content, low price, and biodegradability. However, paper filter rods also have disadvantages such as low hardness and easy deformation.

[0004] It should be noted that the information disclosed in the background technology section of the utility model is only intended to increase the understanding of the overall background of the utility model, and should not be regarded as an admission or any form of implication that the information constitutes the prior art known to those skilled in the art. The above statements are only used to provide background technology information related to the utility model, and do not necessarily constitute the prior art. Utility Model Content

[0005] The embodiment of the utility model provides a cigarette filter rod and a cigarette, which can effectively improve the hardness of the filter rod and reduce the possibility of collapse and deformation of the filter rod.

[0006] According to one aspect of the utility model, a cigarette filter rod is provided, comprising a paper material and a shaping paper, wherein the paper material comprises a first paper segment and a second paper segment, the first paper segment comprises a plurality of concave portions and a plurality of convex portions, the surface of the second paper segment is flat, the paper material constitutes an inner core of the cigarette filter rod, and the shaping paper is wrapped around the outside of the inner core.

[0007] In some embodiments, both the concave portions and the convex portions are distributed in a dot shape; or, both the concave portions and the convex portions are distributed in a strip shape; or, the first paper segment includes concave portions and convex portions distributed in a dot shape and concave portions and convex portions distributed in a strip shape.

[0008] In some embodiments, both the concave portion and the convex portion extend along a straight line or along a curved line.

[0009] In some embodiments, the extending directions of the concave and convex portions are parallel to the axial direction of the cigarette filter rod; or, the extending directions of the concave and convex portions are inclined relative to the axial direction of the cigarette filter rod.

[0010] In some embodiments, the plurality of recesses and the plurality of protrusions extend along the axial direction of the cigarette filter rod, and the plurality of recesses and the plurality of protrusions are arranged at intervals along the circumferential direction of the cigarette filter rod.

[0011] In some embodiments, multiple recesses and multiple protrusions extend from one end of the cigarette filter rod segment made of the first paper segment along the axial direction of the cigarette filter rod segment to the other end of the cigarette filter rod segment; or, a portion of the multiple recesses and multiple protrusions extend from one end of the cigarette filter rod segment made of the first paper segment along the axial direction of the cigarette filter rod segment to the other end of the cigarette filter rod segment, and the length of another portion of the multiple recesses and multiple protrusions is less than the axial length of the cigarette filter rod segment made of the first paper segment.

[0012] In some embodiments, the plurality of recesses and the plurality of protrusions extend along the circumference of the cigarette filter rod, and the plurality of recesses and the plurality of protrusions are arranged at intervals along the axial direction of the cigarette filter rod.

[0013] In some embodiments, the depths of the plurality of concave portions and the plurality of convex portions are the same or different.

[0014] In some embodiments, the cigarette filter rod comprises a plurality of first paper segments, and the numbers of recesses on the plurality of first paper segments are the same or different.

[0015] In some embodiments, the first paper segment and the second paper segment are integrally formed.

[0016] According to another aspect of the utility model, a cigarette is provided, comprising the above-mentioned cigarette filter rod.

[0017] In some embodiments, the cigarette further comprises a tobacco shred segment connected to the cigarette filter rod, and the first paper segment in the cigarette filter rod is arranged at an end away from the tobacco shred segment.

[0018] Based on the above technical scheme, the paper material used to manufacture the inner core of the cigarette filter rod in the embodiment of the utility model includes two paper segments. The first paper segment is provided with multiple recesses and multiple protrusions, and the surface of the second paper segment is flat. The first paper segment with multiple recesses and multiple protrusions is relatively soft, which can increase the filling amount, has a large hardness, and has a large suction resistance; the second paper segment with a flat surface is relatively stiff, has a small filling amount, a small hardness, but a small suction resistance. Therefore, including the first paper segment and the second paper segment at the same time can balance the hardness and suction resistance of the entire filter rod, so that the filter rod as a whole has both appropriate hardness to prevent collapse and deformation, and appropriate suction resistance, thereby enhancing the smoking experience and improving the filtering effect. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] The drawings described herein are used to provide a further understanding of the present invention and constitute a part of the present invention. The exemplary embodiments of the present invention and their descriptions are used to explain the present invention and do not constitute an improper limitation on the present invention. In the drawings:

[0020] Figure 1 This is a schematic structural diagram of some embodiments of the cigarette filter rod provided by the utility model.

[0021] Figure 2 Schematic diagram of the manufacturing process of some embodiments of the cigarette filter rod provided by the utility model.

[0022] In the figure:

[0023] 1. Cigarette filter rod; 2. Tobacco segment;

[0024] 10. Paper material; 11. First paper segment; 111. Concave portion; 112. Protrusion; 12. Second paper segment; 20. Forming paper; 30. Tipping paper. DETAILED DESCRIPTION

[0025] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments of the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0026] In the description of the present invention, it should be understood that the terms "center", "lateral", "longitudinal", "front", "rear", "left", "right", "up", "down", "vertical", "horizontal", "top", "bottom", "inside", "outside" and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as limiting the scope of protection of the present invention.

[0027] In view of the shortcomings of paper filter rods, such as low hardness and easy deformation, the inventors conducted a lot of research and found that paper-acetate composite filter rods can be made by mixing acetate fiber slurry with wood pulp fiber slurry. However, compared with pure paper filter rods, although the hardness of paper-acetate composite filter rods is improved, this composite filter rod still requires a large amount of acetate fiber, which is not conducive to reducing costs.

[0028] After further research, the inventors also found that the main reason for the low hardness of the paper rod is that the filling amount of paper is small, which in turn leads to the low hardness of the paper filter rod and easy collapse and deformation.

[0029] Based on the above findings, the inventors have made improvements to the paper filter rod.

[0030] like Figure 1 and Figure 2As shown, in some embodiments of the cigarette filter rod provided by the present invention, the cigarette filter rod includes a paper material 10 and a shaping paper 20, the paper material 10 includes a first paper segment 11 and a second paper segment 12, the first paper segment 11 includes a plurality of concave portions 111 and a plurality of convex portions 112, the surface of the second paper segment 12 is flat, the paper material 10 constitutes the inner core of the cigarette filter rod 1, and the shaping paper 20 is wrapped around the outside of the inner core.

[0031] In the above embodiment, the paper material 10 used to manufacture the inner core of the cigarette filter rod 1 includes two types of paper segments, the first paper segment 11 is provided with a plurality of recesses 111 and a plurality of protrusions 112, and the surface of the second paper segment 12 is flat. The first paper segment 11 with a plurality of recesses 111 and a plurality of protrusions 112 is relatively soft, can increase the filling amount, has a large hardness, and has a large suction resistance; the second paper segment 12 with a flat surface is relatively stiff, has a small filling amount, a small hardness, but a small suction resistance. Therefore, by using the first paper segment 11 and the second paper segment 12 at the same time, the hardness and suction resistance of the entire filter rod can be balanced, so that the filter rod as a whole has both appropriate hardness to prevent collapse and deformation, and appropriate suction resistance, thereby enhancing the smoking experience and improving the filtering effect.

[0032] Compared with cigarette filter rods made only from paper segments with smooth surfaces, the cigarette filter rod embodiments provided in the present application have greater hardness and are not easy to collapse and deform; compared with cigarette filter rods made only from paper segments with uneven surfaces, the cigarette filter rod embodiments provided in the present application have smaller suction resistance and can effectively improve the smoking experience.

[0033] In some embodiments provided by the present invention, the inner core of the cigarette filter rod 1 is made of paper material 10, that is, the cigarette filter rod 1 is a paper filter rod.

[0034] The first paper segment 11 includes a plurality of recessed portions 111 and a plurality of protruding portions 112. The presence of the plurality of recessed portions 111 and the plurality of protruding portions 112 can form wrinkles at least partially on the first paper segment 11. The first paper segment 11 with wrinkles has stronger plasticity. When a filter rod is manufactured using the first paper segment 11, the filling amount can be increased, thereby making the filter rod segment manufactured using the first paper segment 11 more compact, increasing the hardness of the filter rod, and reducing the possibility of collapse and deformation of the filter rod.

[0035] In addition, since the surface of the first paper segment 11 is uneven, the paper segment is softer and more plastic. When it is folded, the concave portion 111 and the convex portion 112 can serve as a guide to make the folding more regular. Therefore, the manufactured filter rod can significantly reduce the volatility of the suction resistance index of the filter rod. The arrangement of the concave portion 111 and the convex portion 112 can also increase the paper surface area of ​​the first paper segment 11, exposing the paper fibers and increasing the filtering efficiency.

[0036] The surface of the second paper segment 12 is flat, and the flat second paper segment 12 is stiffer than the uneven first paper segment 11. Therefore, the paper filling amount of the filter rod segment made of the second paper segment 12 is relatively small. Although the hardness is slightly worse, the suction resistance is also smaller. Therefore, the second paper segment 12 is used in combination with the first paper segment 11. Compared with the filter rod with only the second paper segment, the hardness of the entire filter rod can be increased; and compared with the filter rod with only the first paper segment, the suction resistance of the entire filter rod can be reduced, thereby balancing the hardness and suction resistance of the entire filter rod, which is conducive to making the final filter rod meet the ideal standards in terms of hardness and suction resistance.

[0037] The hardness of the cigarette filter rod embodiment provided by the utility model is achieved by adding the first paper segment 11 rather than by adding acetate fiber, so the cost can be effectively controlled.

[0038] The concave portion 111 and the convex portion 112 may be in a dot shape or a stripe shape.

[0039] In some embodiments, both the concave portions 111 and the convex portions 112 are distributed in a dotted manner.

[0040] In some embodiments, the concave portions 111 and the convex portions 112 are distributed in strip shapes.

[0041] In some embodiments, the first paper segment 11 includes concave portions 111 and convex portions 112 distributed in a dot shape and concave portions 111 and convex portions 112 distributed in a strip shape.

[0042] In some embodiments, the concave portion 111 and the convex portion 112 extend along a straight line or a curve, which may be an S-shaped, arc-shaped, or irregular curve.

[0043] In some embodiments, the extending direction of the concave portion 111 and the convex portion 112 is parallel to the axial direction of the cigarette filter rod 1 .

[0044] In some embodiments, the extending directions of the concave portion 111 and the convex portion 112 are inclined relative to the axial direction of the cigarette filter rod 1 .

[0045] In some embodiments, the angle between the extension direction of the concave portion 111 and the convex portion 112 and the axial direction of the cigarette filter rod 1 may be 30°, 60°, 90°, 120°, 150° or 170°, etc.

[0046] There are many options for arranging the plurality of concave portions 111 and the plurality of convex portions 112 .

[0047] In some embodiments, the plurality of recesses 111 and the plurality of protrusions 112 extend along the axial direction of the cigarette filter rod 1 , and the plurality of recesses 111 and the plurality of protrusions 112 are arranged at intervals along the circumferential direction of the cigarette filter rod 1 .

[0048] In some embodiments, the plurality of concave portions 111 and the plurality of convex portions 112 are spaced apart and evenly arranged along the circumference of the cigarette filter rod 1 .

[0049] In some embodiments, the plurality of recesses 111 and the plurality of protrusions 112 extend from one end of the cigarette filter rod segment made of the first paper segment 11 to the other end of the cigarette filter rod segment along the axial direction of the cigarette filter rod segment. That is, the length of the plurality of recesses 111 and the plurality of protrusions 112 along the axial direction of the cigarette filter rod segment made of the first paper segment 11 is equal to the axial length of the cigarette filter rod segment.

[0050] In some embodiments, a portion of the plurality of recesses 111 and the plurality of protrusions 112 extends from one end of the cigarette filter rod segment made of the first paper segment 11 to the other end of the cigarette filter rod segment along the axial direction of the cigarette filter rod segment, and the length of another portion of the plurality of recesses 111 and the plurality of protrusions 112 is less than the axial length of the cigarette filter rod segment made of the first paper segment 11. That is, the length of a portion of the plurality of recesses 111 and the plurality of protrusions 112 along the axial direction of the cigarette filter rod segment made of the first paper segment 11 is equal to the axial length of the cigarette filter rod segment, and the length of another portion is less than the axial length of the cigarette filter rod segment.

[0051] In some embodiments, the recess 111 whose axial length is equal to the axial length of the cigarette filter rod segment made of the first paper segment 11 and the recess 111 whose axial length is less than the axial length of the cigarette filter rod segment made of the first paper segment 11 can be arranged at intervals.

[0052] In some embodiments, the plurality of recesses 111 and the plurality of protrusions 112 extend along the circumference of the cigarette filter rod 1 , and the plurality of recesses 111 and the plurality of protrusions 112 are arranged at intervals along the axial direction of the cigarette filter rod 1 .

[0053] In some embodiments, the depths of the plurality of concave portions 111 and the plurality of convex portions 112 are the same or different.

[0054] By setting the recesses 111 to have different depths, the first paper segment 11 can have different softness, so that different filter segments of the filter rod have different hardness and draw resistance, thereby improving the hardness and draw resistance of the entire cigarette filter rod.

[0055] In some embodiments, the cigarette filter rod 1 includes a plurality of first paper segments 11 , and the numbers of the recesses 111 on the plurality of first paper segments 11 are the same or different.

[0056] By providing a plurality of first paper segments 11 with different numbers of recesses 111 , different filter segments of the filter rod can have different hardness and draw resistance, thereby improving the hardness and draw resistance of the entire cigarette filter rod.

[0057] In some embodiments, the cigarette filter rod includes a plurality of first paper segments 11 , and the depths of the recesses 111 on the plurality of first paper segments 11 are the same or different.

[0058] In some embodiments, the cigarette filter rod includes a plurality of first paper segments 11 , and the lengths of the recesses 111 on the plurality of first paper segments 11 are the same or different.

[0059] In some embodiments, the cigarette filter rod includes a plurality of first paper segments 11 , and the shapes of the recesses 111 on the plurality of first paper segments 11 are the same or different.

[0060] In some embodiments, the cigarette filter rod includes a plurality of first paper segments 11 , and the extension directions of the recesses 111 on the plurality of first paper segments 11 are the same or different.

[0061] By changing the depth, length, shape and extension direction of the recess 111, the softness of the first paper segment 11 can be changed, thereby changing the hardness and draw resistance of the cigarette filter rod segment made of the first paper segment 11, and improving the hardness and draw resistance of the entire cigarette filter rod.

[0062] In the embodiment provided by the present invention, the number of the first paper segments 11 and the second paper segments 12 can be flexibly set as needed.

[0063] In some embodiments, the cigarette filter rod includes a first paper segment 11 and a plurality of second paper segments 12 , or a plurality of first paper segments 11 and a second paper segment 12 , or a plurality of first paper segments 11 and a plurality of second paper segments 12 .

[0064] In some embodiments, the axial length of the first paper segment 11 is the same as or different from the axial length of the second paper segment 12. The axial lengths of the first paper segments 11 may be the same or different. The axial lengths of the second paper segments 12 may be the same or different.

[0065] The ratio between the total length of the first paper segment 11 and the total length of the second paper segment 12 in the cigarette filter rod can also be flexibly set according to needs.

[0066] In some embodiments, the first paper segment 11 and the second paper segment 12 are integrally formed, that is, the first paper segment 11 and the second paper segment 12 are two different parts of the same paper. This structure can omit the step of separately making the two paper segments and then connecting the two paper segments, which is conducive to simplifying the operation, improving the manufacturing cost, and also reducing the manufacturing cost.

[0067] Based on the cigarette filter rod 1 in each of the above embodiments, the utility model further provides a cigarette, which includes the cigarette filter rod 1 mentioned above.

[0068] In some embodiments, the cigarette further comprises a tobacco shred segment 2 connected to the cigarette filter rod 1 , and the first paper segment 11 in the cigarette filter rod 1 is arranged at an end away from the tobacco shred segment 2 .

[0069] By arranging the first paper segment 11 at the end away from the tobacco segment 2, the first paper segment 11 can be located at the mouth-proximal end of the cigarette filter rod 1, that is, the end closest to the human mouth when smoking and also the end farthest from the tobacco segment 2. This can increase the hardness of the mouth-proximal end of the cigarette filter rod 1 and prevent the smoking experience from being affected due to the low hardness of the mouth-proximal end.

[0070] Moreover, the suction resistance of the first paper segment 11 is relatively large, so when it is arranged near the mouth end, the filtering effect of the mouth end can also be increased.

[0071] The manufacturing steps of the cigarette filter rod 1 provided by the utility model include:

[0072] A paper material 10 is provided, the paper material 10 comprises a first paper segment 11 and a second paper segment 12, the first paper segment 11 is provided with a plurality of concave portions 111 and a plurality of convex portions 112, and the surface of the second paper segment 12 is flat;

[0073] Using paper material 10 to manufacture the inner core of cigarette filter rod 1; and

[0074] The plug wrapping paper 20 is wrapped around the outside of the inner core to form a cigarette filter rod 1.

[0075] In the manufacturing steps of the cigarette filter rod 1 provided by the utility model, the paper material 10 used to manufacture the inner core of the cigarette filter rod 1 includes two paper segments, the first paper segment 11 is provided with a plurality of recesses 111 and a plurality of protrusions 112, and the surface of the second paper segment 12 is flat. The first paper segment 11 with a plurality of recesses 111 and a plurality of protrusions 112 is relatively soft, can increase the filling amount, has a large hardness, and has a large suction resistance; the second paper segment 12 with a flat surface is relatively stiff, has a small filling amount, a small hardness, but a small suction resistance. Therefore, by using the first paper segment 11 and the second paper segment 12 at the same time, the hardness and suction resistance of the entire filter rod can be balanced, so that the filter rod as a whole has both appropriate hardness to prevent collapse and deformation, and appropriate suction resistance, thereby enhancing the suction experience and improving the filtering effect.

[0076] In some embodiments, the operation of providing the paper material 10 includes: passing the paper material 10 through the gap between two pressing rollers, on which convex ridges are intermittently provided, and pressing intermittent concave portions 111 on the paper material 10 through the convex ridges on the two pressing rollers, and forming a convex portion 112 between the two concave portions 111.

[0077] The pressing roller with convex ridges can press out the concave portion 111 and the convex portion 112 on the paper material 10. The intermittently arranged convex ridges can be used to produce a paper material 10 including a first paper segment 11 and a second paper segment 12. The manufacturing step is simple to operate, highly feasible, and has high manufacturing efficiency.

[0078] In some embodiments, the inner core of the cigarette filter rod 1 is manufactured using the paper material 10, and the plugging paper 20 is wrapped around the outer surface of the inner core to form the cigarette filter rod 1, and the operation includes:

[0079] The length of the paper material 10 is much greater than the length of a single cigarette filter rod 1;

[0080] The inner core of the cigarette filter rod 1 is manufactured by using the paper material 10;

[0081] Wrapping the plug wrapping paper 20 on the outside of the inner core;

[0082] In the process of continuously manufacturing the inner core and the wrapping paper 20, the cigarette filter rods 1 are cut by a cutting device.

[0083] The inner core of the cigarette filter rod 1 made of paper material 10 can be formed by a gathering molding method, which can continuously gather the infinitely long paper material 10 to continuously output the inner core, and can continuously output the cigarette filter rod by wrapping with the forming paper 20. Through the slitting operation, the cigarette filter rod 1 that meets the requirements can be continuously cut out as needed.

[0084] The positive technical effects of the cigarette filter rods in the above-mentioned embodiments are also applicable to cigarettes and will not be described in detail here.

[0085] Combine the following Figure 1 and Figure 2 The structure and manufacturing process of an embodiment of the cigarette filter rod of the utility model are described as follows:

[0086] like Figure 1 As shown, the cigarette filter rod 1 includes a paper material 10 , a plugging paper 20 and a tipping paper 30 .

[0087] The plugging paper 20 is wrapped around the outer periphery of the inner core made of paper material 10, and the tipping paper 30 is wrapped around the outer periphery of the plugging paper 20. The length of the tipping paper 30 can be greater than the length of the plugging paper 20, so that the cigarette filter rod 1 and the tobacco segment 2 are connected through the tipping paper 30.

[0088] The paper material 10 comprises a first paper segment 11 and a second paper segment 12 arranged adjacent to each other, wherein the first paper segment 11 is arranged at the mouth end of the cigarette filter rod 1, and the second paper segment 12 is connected to the tobacco segment 2. The first paper segment 11 and the second paper segment 12 are both cylindrical.

[0089] The first paper segment 11 includes a plurality of concave portions 111 and a plurality of convex portions 112, and the surface of the second paper segment 12 is substantially flat. The hardness of the cigarette filter rod segment made of the first paper segment 11 is greater than the hardness of the cigarette filter rod segment made of the second paper segment 12, and the draw resistance of the cigarette filter rod segment made of the second paper segment 12 is less than the draw resistance of the cigarette filter rod segment made of the first paper segment 11.

[0090] On the first paper segment 11, the plurality of recesses 111 and the plurality of protrusions 112 are distributed in strips, the extension direction of the plurality of recesses 111 and the plurality of protrusions 112 is parallel to the axial direction of the cigarette filter rod segment made of the first paper segment 11, and the length of the plurality of recesses 111 and the plurality of protrusions 112 along the axial direction of the cigarette filter rod segment is equal to the axial length of the cigarette filter rod segment.

[0091] like Figure 2 As shown, when manufacturing cigarettes, a paper material with a flat surface is first passed through the gap between two pressing rollers, and the convex edges on the pressing rollers can be used to press out a paper material 10 having a first paper segment 11 and a second paper segment 12;

[0092] Then, the paper material 10 is gathered and formed, and during the gathering process, the outer circumference of the paper material 10 is wrapped with the forming paper 20 to produce a cylindrical cigarette filter rod; the cigarette filter rod produced at this time is relatively long, and as the paper material is input, the gathering is continuously performed, and the cigarette filter rod can be continuously output;

[0093] Then, by controlling the cutting time and position of the cutter, segments of cigarette filter rods 1 can be manufactured; one end of the cigarette filter rod 1 is a first filter rod segment made of a first paper segment 11, and the other end is a second filter rod segment made of a second paper segment 12. The difference between the first filter rod segment and the second filter rod segment can be seen from the end surface. The end surface of the first filter rod segment has a full visual effect, and there are no obvious pores, so that fine cigarette powder will not pass through, while the end surface of the second filter rod segment looks like a crumpled ordinary paper with some pores.

[0094] Finally, the cigarette filter rod 1 and the tobacco shreds 2 are connected together by the tipping paper 30 to form a cigarette. The first filter rod segment made of the first paper segment 11 in the cigarette filter rod 1 is located at the mouth-end of the cigarette.

[0095] The embodiment of the utility model can effectively solve the problem of large suction resistance and low hardness of pure paper filter sticks. The filter stick near the mouth end has greater hardness and is not easy to collapse and deform, which can effectively reduce the content of harmful substances such as nicotine and tar. Moreover, the paper stick is easy to degrade, which can reduce damage to the environment.

[0096] Finally, it should be noted that the above embodiments are only used to illustrate the technical solution of the utility model rather than to limit it. Although the utility model has been described in detail with reference to the preferred embodiments, ordinary technicians in the relevant field should understand that without departing from the principle of the utility model, the specific implementation method of the utility model can still be modified or some technical features can be replaced by equivalents, and these modifications and equivalent replacements should be included in the scope of the technical solution for protection of the utility model.

Claims

1. A cigarette filter rod (1), characterized in that: The invention comprises a paper material (10) and a shaping paper (20), wherein the paper material (10) comprises a first paper segment (11) and a second paper segment (12), wherein the first paper segment (11) comprises a plurality of concave portions (111) and a plurality of convex portions (112), and the surface of the second paper segment (12) is flat, wherein the paper material (10) constitutes the inner core of the cigarette filter rod (1), and the shaping paper (20) is wrapped around the outside of the inner core.

2. The cigarette filter rod (1) according to claim 1, characterized in that: The concave portions (111) and the convex portions (112) are both distributed in a dotted manner; or, the concave portions (111) and the convex portions (112) are both distributed in a striped manner; or, the first paper segment (11) comprises the concave portions (111) and the convex portions (112) distributed in a dotted manner and the concave portions (111) and the convex portions (112) distributed in a striped manner.

3. The cigarette filter rod (1) according to claim 1, characterized in that: The concave portion (111) and the convex portion (112) both extend along a straight line or along a curve.

4. The cigarette filter rod (1) according to claim 1, characterized in that: The extending directions of the concave portion (111) and the convex portion (112) are parallel to the axial direction of the cigarette filter rod (1); or, the extending directions of the concave portion (111) and the convex portion (112) are inclined relative to the axial direction of the cigarette filter rod (1).

5. The cigarette filter rod (1) according to claim 1, characterized in that: The plurality of recesses (111) and the plurality of protrusions (112) all extend along the axial direction of the cigarette filter rod (1), and the plurality of recesses (111) and the plurality of protrusions (112) are arranged at intervals along the circumference of the cigarette filter rod (1).

6. The cigarette filter rod (1) according to claim 1, characterized in that: The plurality of recesses (111) and the plurality of protrusions (112) extend from one end of the cigarette filter rod segment made of the first paper segment (11) along the axial direction of the cigarette filter rod segment to the other end of the cigarette filter rod segment; or, a portion of the plurality of recesses (111) and the plurality of protrusions (112) extend from one end of the cigarette filter rod segment made of the first paper segment (11) along the axial direction of the cigarette filter rod segment to the other end of the cigarette filter rod segment, and the length of another portion of the plurality of recesses (111) and the plurality of protrusions (112) is less than the axial length of the cigarette filter rod segment made of the first paper segment (11).

7. The cigarette filter rod (1) according to claim 1, characterized in that: The plurality of recesses (111) and the plurality of protrusions (112) all extend along the circumference of the cigarette filter rod (1), and the plurality of recesses (111) and the plurality of protrusions (112) are arranged at intervals along the axial direction of the cigarette filter rod (1).

8. The cigarette filter rod (1) according to claim 1, characterized in that: The depths of the plurality of recesses (111) and the plurality of protrusions (112) are the same or different.

9. The cigarette filter rod (1) according to claim 1, characterized in that: It comprises a plurality of the first paper segments (11), and the numbers of the recessed portions (111) on the plurality of the first paper segments (11) are the same or different.

10. The cigarette filter rod (1) according to claim 1, characterized in that: The first paper segment (11) and the second paper segment (12) are integrally formed.

11. A cigarette, characterized in that: It comprises the cigarette filter rod (1) as claimed in any one of claims 1 to 10.

12. The cigarette according to claim 11, characterized in that: It also comprises a tobacco shred segment (2) connected to the cigarette filter rod (1), and the first paper segment (11) in the cigarette filter rod (1) is arranged at an end away from the tobacco shred segment (2).

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