Coaxial core groove filter stick for cigarette and cigarette

Abstract

The utility model discloses a coaxial core groove filter stick for cigarettes, which comprises a filter stick body, a first stick section and a second stick section which are sequentially connected along the axis direction of the filter stick body, the first stick section comprises an outer stick body section and an inner stick body section, and the second stick section comprises an inner stick body section and an outer stick body section. The outer rod body section comprises a first through hole which is located in the middle of the outer rod body section and extends in the axis direction of the filter rod body, the inner rod body section is arranged in the first through hole, and a plurality of grooves extending in the axis direction of the filter rod body are formed in the peripheral face of the inner rod body section or the hole wall of the first through hole. The plurality of grooves are distributed around the axis of the filter stick body; the filter paper covers the grooves from the radial inner sides or the radial outer sides of the grooves and is used for filtering smoke; and the first forming paper wraps the outer rod body section from the radial outer side of the outer rod body section.

Description

Technical Field

[0001] The utility model relates to the field of tobacco products, in particular to a coaxial core groove filter rod for cigarettes and a cigarette. Background Art

[0002] Cigarette smoke contains tar, which is harmful to the human body. Installing a filter on a cigarette can effectively reduce tar and other harmful components. A filter rod is a rod of a certain length, made from filter material and processed and rolled to have filtering properties. The filter rod is cut and attached directly to the inhalation end of a cigarette, or it is attached to the inhalation end of a cigarette after being combined with other filter segments. This column filters certain substances in cigarette smoke, such as tar and nicotine, while also cooling and diverting the smoke. It is a component of filter cigarettes. Specifically, the filter rod's filtration of particulate matter is a mechanical filtration method, and the mechanisms that cause smoke particle filtration are primarily direct interception, inertial collision, and diffusion deposition. Filter cigarettes have the advantage of avoiding the discomfort caused by cigarette dust sticking to the lips, reducing harmful substances in the smoke, and providing consumers with smoke of the right temperature and taste, which is why they have quickly gained acceptance. Summary of the Invention

[0003] The utility model aims to provide a coaxial core groove filter rod for cigarettes which can improve the taste of smoke after forming a filter tip, and a cigarette formed by using the coaxial core groove filter rod for cigarettes.

[0004] The first aspect of the utility model discloses a coaxial core groove filter rod for cigarettes, comprising:

[0005] A filter rod body, comprising: a first rod segment and a second rod segment sequentially connected along the axial direction of the filter rod body, the first rod segment comprising an outer rod segment and an inner rod segment, the outer rod segment comprising a first through hole located in the middle thereof and extending along the axial direction of the filter rod body, the inner rod segment being disposed within the first through hole, a plurality of grooves extending along the axial direction of the filter rod body being disposed on an outer circumferential surface of the inner rod segment or a wall of the first through hole, the plurality of grooves being distributed around the axis of the filter rod body;

[0006] filter paper covering the plurality of grooves from a radially inner side or a radially outer side of the plurality of grooves for filtering smoke;

[0007] The first wrapping paper wraps the outer rod segment from the radial outer side of the outer rod segment.

[0008] In some embodiments, the filter paper is grooved paper, the plurality of grooves are distributed on the outer circumference of the inner rod segment, and the grooved paper wraps the inner rod segment.

[0009] In some embodiments, the outer contour of the cross section of the inner rod segment is in the shape of a gear contour line.

[0010] In some embodiments, the invention further comprises a second wrapping paper, wherein the second wrapping paper wraps the fluted paper from the radially outer side of the fluted paper, and the second wrapping paper is an air-permeable wrapping paper.

[0011] In some embodiments, the plurality of grooves are evenly arranged on the outer circumference of the inner rod segment.

[0012] In some embodiments, the outer rod segment and the inner rod segment have different densities.

[0013] In some embodiments, the filter rod body includes a plurality of second rod segments, and both ends of the first rod segment are adjacent to a second rod segment respectively.

[0014] In some embodiments, the filter rod body includes an inner strip rod body and an outer ring rod body wrapping the inner strip rod body, and the groove is provided on a partial segment of the inner strip rod body so that the partial segment of the outer ring rod body and the partial segment of the inner strip rod body form the first rod segment.

[0015] In some embodiments, the density of the inner strip-shaped rods is greater than the density of the outer strip-shaped rods.

[0016] The second aspect of the utility model discloses a cigarette comprising a filter tip, wherein the filter tip comprises a smoking section formed by cutting any one of the above-mentioned coaxial core groove filter rods for cigarettes.

[0017] In some embodiments, the suction segment includes: one first rod segment and one second rod segment, one first rod segment and two second rod segments located at both ends of the first rod segment, or one second rod segment and two first rod segments located at both ends of the second rod segment.

[0018] Based on the coaxial core groove filter rod for cigarettes provided by the utility model, when the filter tip is formed to pass the smoke, the first rod segment has a groove, the second rod segment is a solid segment, and the groove is covered with filter paper. When the smoke flows between the first rod segment and the second rod segment, it flows from the first rod segment with the groove to the second rod segment without the groove, or from the second rod segment without the groove to the first rod segment with the groove. The smoke can strengthen the flow in the radial direction, so that it can be more effectively filtered by the filter paper, and can better achieve the effects of filtering and cooling by the filter rod body. At the same time, since the filter paper covers the groove, the effective filtering area of ​​the filter paper can be increased, and the filtering effect of the filter paper on the smoke can be further improved. The utility model can achieve a better cooling effect on the smoke while improving the smoking safety and taste of the smoke.

[0019] Other features and advantages of the present invention will become apparent from the following detailed description of exemplary embodiments of the present invention with reference to the accompanying drawings. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] The drawings described herein are used to provide a further understanding of the present invention and constitute a part of this application. The exemplary embodiments of the present invention and their descriptions are used to explain the present invention and do not constitute an improper limitation of the present invention. In the drawings:

[0021] Figure 1 This is a schematic structural diagram of a partial cross-section of a coaxial core groove filter rod for cigarettes according to an embodiment of the utility model;

[0022] Figure 2 for Figure 1 The cross-sectional structure diagram of the coaxial core groove filter rod for cigarettes is shown. DETAILED DESCRIPTION

[0023] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the embodiments described are only some embodiments of the present invention, not all embodiments. The following description of at least one exemplary embodiment is actually only illustrative and is in no way intended to limit the present invention and its application or use. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of the present invention.

[0024] Unless otherwise specifically stated, the relative arrangement of the parts and steps, numerical expressions and numerical values ​​set forth in these embodiments do not limit the scope of the present invention. At the same time, it should be understood that, for ease of description, the sizes of the various parts shown in the accompanying drawings are not drawn according to actual proportional relationships. The technology, methods and equipment known to those of ordinary skill in the relevant art may not be discussed in detail, but in appropriate cases, the technology, methods and equipment should be considered as part of the specification. In all examples shown and discussed here, any specific value should be interpreted as being merely exemplary, rather than as a limitation. Therefore, other examples of the exemplary embodiments may have different values. It should be noted that similar numbers and letters represent similar items in the following figures, and therefore, once an item is defined in one figure, it does not need to be further discussed in subsequent figures.

[0025] In the description of the present invention, it should be understood that the use of words such as "first" and "second" to limit components is only for the convenience of distinguishing the corresponding components. Unless otherwise stated, the above words have no special meaning and therefore cannot be understood as limiting the scope of protection of the present invention.

[0026] In the description of this utility model, it should be noted that, unless otherwise specified or limited, the terms "mounted," "connected," and "connected" should be understood broadly. For example, they may refer to fixed connections, detachable connections, or integral connections; they may refer to direct connections or indirect connections through an intermediary. Those skilled in the art will understand the specific meanings of these terms in this utility model based on the specific circumstances.

[0027] For ease of description, spatially relative terms such as "above", "above", "on the upper surface of", "above", etc. may be used herein to describe the spatial positional relationship of a device or feature to other devices or features as shown in the figures. It should be understood that spatially relative terms are intended to include different orientations of the device in use or operation in addition to the orientation described in the figures. For example, if the device in the drawings is inverted, the device described as "above other devices or structures" or "above other devices or structures" will be positioned as "below other devices or structures" or "below other devices or structures". Thus, the exemplary term "above" can include both "above" and "below". The device can also be positioned in other different ways (rotated 90 degrees or in other orientations), and the spatially relative descriptions used here are interpreted accordingly.

[0028] like Figure 1 and Figure 2 As shown, the coaxial core groove filter rod for cigarettes of this embodiment includes a filter rod body, filter paper and a first wrapping paper 4.

[0029] The filter rod body includes a first rod segment 51 and a second rod segment 52 connected in sequence along the axial direction of the filter rod body. The first rod segment 51 includes an outer rod segment 512 and an inner rod segment 511. The outer rod segment 512 includes a first through hole located in the middle of the outer rod segment 512 and extending along the axial direction of the filter rod body, and the inner rod segment 511 is arranged in the first through hole. A plurality of grooves 513 extending along the axial direction of the filter rod body are provided on the outer circumferential surface of the inner rod segment 511 or the hole wall of the first through hole. The plurality of grooves 513 are distributed around the axis of the filter rod body, that is, when a plurality of grooves 513 are provided on the outer circumferential surface of the inner rod segment 511, the plurality of grooves 513 are distributed along the circumferential direction of the outer circumferential surface of the inner rod segment 511, that is, when a plurality of grooves 513 are provided on the hole wall of the first through hole, the plurality of grooves 513 are distributed along the circumferential direction of the hole wall of the first through hole. The first rod segment 51 has a groove therein and is a non-solid segment. The second rod segment is a solid segment relative to the first rod segment, that is, the second rod segment has no groove or other structure therein, and there is no gap in the cross section of the second rod segment; or the second rod segment has a very small groove or other structure therein, but the gap in the cross section of the second rod segment caused by the very small groove or other structure is smaller than the gap in the cross section of the first rod segment caused by the groove of the first rod segment.

[0030] The filter paper covers the multiple grooves 513 from either the radially inner or radially outer sides. The filter paper is used to filter smoke and absorb harmful substances such as tar and / or nicotine from the smoke, thereby reducing tar and reducing harm. When the outer circumference of the inner rod segment 511 is provided with multiple grooves 513, the filter paper covers the multiple grooves 513 from the radially outer sides. When the wall of the first through hole is provided with multiple grooves 513, the filter paper covers the multiple grooves 513 from the radially inner sides.

[0031] The first wrapping paper 4 wraps the outer rod segment 512 from the radial outside of the outer rod segment 512 .

[0032] The coaxial core groove filter rod for cigarettes of this embodiment, when forming a filter tip to pass smoke, the first rod segment 51 has a groove 513, the second rod segment 52 is a solid segment, and the groove 513 is covered with filter paper. When the smoke flows between the first rod segment 51 and the second rod segment 52, it flows from the first rod segment 51 with the groove 513 to the second rod segment 52 without the groove 513, or from the second rod segment 52 without the groove 513 to the first rod segment 51 with the groove 513. The smoke can strengthen the flow in the radial direction, so that it can be more effectively filtered by the filter paper, and can better achieve the effects of filtering and cooling by the filter rod body. At the same time, since the filter paper covers the groove 513, the effective filtering area of ​​the filter paper can be increased, and the filtering effect of the filter paper on the smoke can be further improved. The utility model can achieve a good cooling effect on the smoke while improving the smoking safety and taste of the smoke.

[0033] In some embodiments, the filter paper is fluted paper 514, with multiple grooves 513 distributed on the outer circumference of the inner rod segment 511. The fluted paper 514 wraps around the inner rod segment 511. The use of fluted paper helps maintain the structural shape of the grooves 513. Fluted paper is commonly used in the tobacco industry. For related information, please refer to Chinese patent application publication number CN117702541A.

[0034] In some embodiments, as Figure 2 As shown, the outer contour of the cross section of the inner rod segment is shaped like a gear profile. As shown in the figure, the inner rod segment of this embodiment is manufactured with an outer contour shaped like the teeth of a gear, with grooves 513 formed between the teeth. The outer contour of the cross section of the inner rod segment is shaped like a gear profile. This inner rod segment of this embodiment can be formed by extruding an acetate rod using a gear-shaped roller, making it simple and convenient to manufacture.

[0035] In some embodiments, the coaxial core grooved filter rod for cigarettes further includes a second wrapping paper 2, which wraps around the grooved paper 514 from the radially outer side of the grooved paper 514, and the second wrapping paper 2 is an air-permeable wrapping paper. The second wrapping paper 2 of this embodiment is an air-permeable wrapping paper, which means that smoke can pass through the second wrapping paper 2, so that the second wrapping paper 2 can effectively filter the smoke. The first wrapping paper is an air-impermeable wrapping paper, which prevents smoke from escaping to the outside world from the filter made from the coaxial core grooved filter rod for cigarettes. Air-permeable wrapping paper and air-impermeable wrapping paper are commonly used papers in the tobacco industry. Please refer to the relevant introduction of the patent application document of Chinese Patent Application Publication No. CN117363266A.

[0036] In some embodiments, as Figure 2 As shown, a plurality of grooves 513 are evenly arranged on the outer circumference of the inner rod section 511. The even arrangement helps the smoke to flow evenly and improves the uniformity of the smoke flow.

[0037] In some embodiments, the outer rod segment 512 and the inner rod segment 511 have different densities. This embodiment can facilitate the flow of smoke in the radial direction of the filter rod, further improving the cooling and filtering effects of the smoke.

[0038] In some embodiments, as Figure 1 As shown, the filter rod body includes multiple second rod segments 52, with each end of the first rod segment 51 adjacent to a second rod segment 52. When the filter rod body of this embodiment is cut to form the suction section of the filter tip, various structures can be formed, such as one first rod segment 51 and one second rod segment 52, one first rod segment 51 and two second rod segments 52 located at either end of the first rod segment 51.

[0039] In some embodiments, the filter rod body includes an inner strip rod body 1 and an outer ring rod body 3 wrapping the inner strip rod body 1, and a groove 513 is provided on a partial segment of the inner strip rod body 1 so that the partial segment of the outer ring rod body 3 and the partial segment of the inner strip rod body 1 form a first rod segment 51. Figure 1 This is a schematic structural diagram of a coaxial core groove filter rod for cigarettes, with the outer annular rod body 3 cut away and the inner strip-shaped rod body 1 not cut away.

[0040] In some embodiments, the density of the inner strip-shaped rod 1 is greater than that of the outer strip-shaped rod. When forming the groove, the groove is usually formed by extruding the outer circumference of the inner strip-shaped rod 1. In this embodiment, the density of the inner strip-shaped rod 1 is greater than that of the outer strip-shaped rod. The density of the groove formed by extrusion can be further increased, further improving the radial flow of the smoke.

[0041] In some embodiments, a coaxial core grooved filter rod for cigarettes is formed in the following manner: the inner strip rod body 1 is an acetate fiber tow filter element, which is formed by opening the acetate fiber tow, applying glycerin (plasticizer), and other processes; the grooved paper is rolled by a dedicated grooved roller when the first rod segment wraps the inner strip rod body 1, forming a gear-like groove; the groove is discontinuous, and the designed roller is intermittently distributed along the axial direction of the grooved paper; the position with the groove is the first rod segment, and the position with the groove is the second rod segment. After the inner strip rod body 1 and the grooved paper processing process are completed, the second forming paper is used to wrap the grooved paper and the inner strip rod body 1, and then the grooved paper is transported forward from the first smoke gun channel to the second smoke gun channel; in the second smoke gun channel, another strand of acetate fiber tow is opened, applied with glycerin (plasticizer), and wrapped with the first forming paper to form an outer ring rod body 3; the outer ring rod body 3 is wrapped around the outside of the inner strip rod body 1 to form an integrated structure.

[0042] In some embodiments, a cigarette is also disclosed, comprising a filter tip, wherein the filter tip comprises a smoking section formed by cutting any of the above-mentioned coaxial core groove filter rods for cigarettes.

[0043] In some embodiments, the suction segment includes: a first rod segment 51 and a second rod segment 52, a first rod segment 51 and two second rod segments 52 located at both ends of the first rod segment 51, or a second rod segment 52 and two first rod segments 51 located at both ends of the second rod segment 52.

[0044] Finally, it should be noted that the above embodiments are only used to illustrate the technical solution of the utility model and not to limit it; although the utility model is described in detail with reference to the preferred embodiments, ordinary technicians in the field should understand that the specific implementation methods of the utility model can still be modified or some technical features can be replaced by equivalents; without departing from the spirit of the technical solution of the utility model, they should all be included in the scope of the technical solution for protection of the utility model.

Claims

1. A coaxial core groove filter rod for cigarettes, characterized in that: include: A filter rod body, comprising: a first rod segment and a second rod segment sequentially connected along the axial direction of the filter rod body, the first rod segment comprising an outer rod segment and an inner rod segment, the outer rod segment comprising a first through hole located in the middle thereof and extending along the axial direction of the filter rod body, the inner rod segment being disposed within the first through hole, a plurality of grooves extending along the axial direction of the filter rod body being disposed on an outer circumferential surface of the inner rod segment or a wall of the first through hole, the plurality of grooves being distributed around the axis of the filter rod body; filter paper covering the plurality of grooves from a radially inner side or a radially outer side of the plurality of grooves for filtering smoke; The first wrapping paper wraps the outer rod segment from the radial outer side of the outer rod segment.

2. The coaxial core groove filter rod for cigarettes according to claim 1, characterized in that: The filter paper is grooved paper, the plurality of grooves are distributed on the outer circumference of the inner rod segment, and the grooved paper wraps the inner rod segment.

3. The coaxial core groove filter rod for cigarettes according to claim 2, characterized in that: The outer contour of the cross section of the inner rod segment is in the shape of a gear contour line.

4. The coaxial core groove filter rod for cigarettes according to claim 2, characterized in that: The invention further comprises a second wrapping paper, wherein the second wrapping paper wraps the grooved paper from the radially outer side of the grooved paper, and the second wrapping paper is an air-permeable wrapping paper.

5. The coaxial core groove filter rod for cigarettes according to claim 2, characterized in that: The plurality of grooves are evenly arranged on the outer circumferential surface of the inner rod segment.

6. The coaxial core groove filter rod for cigarettes according to claim 1, characterized in that: The outer rod segment and the inner rod segment have different densities.

7. The coaxial core groove filter rod for cigarettes according to claim 1, characterized in that: The filter rod body includes a plurality of second rod segments, and both ends of the first rod segment are adjacent to a second rod segment respectively.

8. The coaxial core groove filter rod for cigarettes according to any one of claims 2 to 5, characterized in that: The filter rod body includes an inner bar rod body and an outer ring rod body wrapping the inner bar rod body. The groove is provided on a partial section of the inner bar rod body so that the partial section of the outer ring rod body and the partial section of the inner bar rod body form the first rod segment.

9. The coaxial core groove filter rod for cigarettes according to claim 8, characterized in that: The density of the inner strip-shaped rod is greater than the density of the outer annular rod.

10. A cigarette, comprising a filter, characterized in that: The filter tip comprises a smoking section formed by cutting the coaxial core groove filter rod for cigarettes as claimed in any one of claims 1 to 9.

11. The cigarette according to claim 10, characterized in that: The suction segment includes: one first rod segment and one second rod segment, one first rod segment and two second rod segments located at both ends of the first rod segment, or one second rod segment and two first rod segments located at both ends of the second rod segment.

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