Paper core filter stick for cigarette and cigarette

Abstract

The utility model discloses a cigarette paper core filter stick and a cigarette, and the cigarette paper core filter stick comprises a filter stick core which comprises a strip-shaped filter structure made of a paper material; the fixing layer comprises an annular structure formed by acetate fiber tows, and the annular structure wraps the filter rod core. The paper core filter stick for the cigarette is good in shape stability, not prone to being affected with damp and good in heat insulation effect after a filter tip is formed.

Description

Technical Field

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

[0002] Cigarette smoke contains tar, which is harmful to the human body. Installing a filter tip 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 tip is a component of a filter cigarette, which is attached directly to the inhalation end of the cigarette after being cut or combined with other filter segments. It filters certain substances in cigarette smoke, such as tar and nicotine, while also cooling and diverting the smoke. Specifically, the filter tip's filtration of particulate matter is a mechanical process, with the mechanisms responsible for filtering smoke particles primarily being direct interception, inertial collision, and diffusion deposition. Filter tip cigarettes have the advantage of avoiding the discomfort caused by cigarette dust sticking to the lips, reducing harmful substances in the smoke, and providing smoke with the appropriate temperature and taste, leading to their rapid adoption by smokers. At present, most of the filters used in China are made of tobacco tow, which is made from natural wood pulp and processed through a series of production processes after vinegar treatment. In addition, some use paper core filter rods, which are usually made from a mixture of softwood pulp, hardwood pulp, straw pulp and hemp pulp. Paper core filter rods have the characteristics of high filtration efficiency and low price, and have obvious effects on reducing the harm and tar of cigarettes. The inventor's known technology of paper core filter rods is as follows: Figure 1 The filter plug 11 is folded and rolled from paper material, and wrapped with a wrapping paper 3, effectively improving the filter's ability to filter harmful substances. However, due to the relatively low hardness of the wrapping paper 3, this paper-core filter plug is prone to poor roundness. The wrapping paper is also susceptible to moisture, which can lead to poor mouthfeel and excessively high temperatures during inhalation. Summary of the Invention

[0003] The utility model aims to provide a cigarette paper core filter rod which has good shape stability, is not easily affected by moisture and has good heat insulation effect after forming a filter tip, and a cigarette formed by using the cigarette paper core filter rod.

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

[0005] The filter plug core comprises a strip-shaped filter structure formed of paper material;

[0006] The fixing layer comprises an annular structure formed by acetate fiber tow, and the annular structure wraps the filter rod core.

[0007] In some embodiments, the invention further comprises a wrapping paper, wherein the wrapping paper wraps the fixing layer from the outside of the fixing layer.

[0008] In some embodiments, the filter structure includes a layered structure. On the cross section of the cigarette paper core filter rod, the layered structure includes multiple paper filter layers distributed along a first direction, where the first direction is the direction of a diameter on the cross section of the annular structure.

[0009] In some embodiments, in a cross section of the cigarette paper core filter rod, the filter layer is strip-shaped, and the filter layer includes a zigzag structure extending in a direction perpendicular to the first direction.

[0010] In some embodiments, along the axial direction of the annular structure, the filtering structure includes a multi-stage layered structure, and the density of the multi-stage layered structure increases sequentially along the axial direction of the annular structure.

[0011] In some embodiments, on the cross section of the cigarette paper core filter rod, the layered structure includes a plurality of annular paper filter layers, and the annular filter layers are sequentially arranged along a first direction.

[0012] In some embodiments, the annular filter layer is a zigzag structure extending along the circumferential direction.

[0013] In some embodiments, the filter layer has a spiral structure formed by moving along the axial direction of the annular structure and rotating around the axial direction of the annular structure in the cross section of the cigarette paper core filter rod.

[0014] A 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 cigarette paper core filter rods.

[0015] In some embodiments, the filtering structure of the cigarette paper core filter rod includes a layered structure. On the cross section of the cigarette paper core filter rod, the layered structure includes a plurality of strip-shaped paper filter layers distributed along a first direction, wherein the first direction is the direction of a diameter on the cross section of the annular structure. Along the axial direction of the annular structure, the suction section includes a multi-segment layered structure, and the density of the multi-segment layered structure increases successively along the axial direction of the cigarette away from the suction side.

[0016] The paper core filter rod for cigarettes provided by the utility model is formed by wrapping a ring structure formed by acetate fiber tow around a strip-shaped filter structure formed by paper material. The ring structure formed by acetate fiber tow has high hardness and can maintain the shape of the filter tip more stably. At the same time, it can also improve the moisture-proof effect. After being made into a filter tip, it can more effectively insulate and improve the smoking experience.

[0017] 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

[0018] 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:

[0019] Figure 1 A schematic structural diagram of a paper core filter rod for cigarettes known to the inventor;

[0020] Figure 2 This is a schematic structural diagram of a paper core filter rod for cigarettes according to an embodiment of the utility model;

[0021] Figure 3 This is a schematic cross-sectional view of a paper core filter rod for cigarettes according to another embodiment of the present invention;

[0022] Figure 4 This is a schematic structural diagram of a paper core filter rod for cigarettes according to another embodiment of the present invention. 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," and "upper" 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 encompass different orientations of the device in use or operation in addition to the orientation depicted in the figures. For example, if a device in a drawing is inverted, a device described as "above" or "on top of" another device or structure would then be positioned as "below" or "below" the other device or structure. Thus, the exemplary term "above" can include both the "above" and "below" orientations. The device may also be positioned in other different ways (rotated 90 degrees or in other orientations), and the spatially relative descriptions used herein should be interpreted accordingly.

[0028] The cigarette paper core filter rod of this embodiment includes a filter rod core 1 and a fixing layer 2 .

[0029] The filter rod core 1 includes a strip-shaped filter structure formed from a paper material. The filter structure as a whole is a strip-shaped structure along the axial direction of the paper core filter rod, that is, its size is largest along the axial direction of the paper core filter rod. The filter structure is formed of paper material, which can help capture and reduce the tar, nicotine and other harmful chemicals inhaled by the smoker. The paper component helps to distribute the smoke more evenly, making the filtration more effective, while not significantly changing the taste or suction resistance desired by the smoker. The use of paper not only improves the filtration effect, but also makes the formed filter tip more environmentally friendly than traditional all-synthetic material filters because it is easier to decompose.

[0030] The retaining layer 2 comprises an annular structure formed of acetate tow, which encases the filter plug 1. In the illustrated embodiment, the acetate tow is formed into a cylindrical annular structure, with the plug 1 encased within the inner cavity of the annular structure. Acetate tow offers excellent filtration performance and mechanical strength, effectively maintaining the structural integrity of the filter tip while providing appropriate draw resistance.

[0031] The paper core filter rod for cigarettes of this embodiment is formed by wrapping a ring structure formed by acetate fiber tow around a strip-shaped filter structure formed by paper material. The ring structure formed by acetate fiber tow has high hardness and can maintain the shape of the filter tip more stably while also improving the moisture-proof effect. After being made into a filter tip, it can more effectively insulate and improve the smoking experience.

[0032] In some embodiments, the cigarette paper filter plug further includes a wrapping paper 3, which wraps around the fixing layer 2 from the outside. The cigarette paper filter plug of this embodiment can maintain good structural stability, and the wrapping paper attached to the outer ring of the fixing layer helps improve moisture resistance and facilitates pattern design.

[0033] In some embodiments, as Figure 2 and Figure 3 As shown, the filter structure includes a layered structure 11. On the cross section of the cigarette paper core filter rod, the layered structure 11 includes multiple paper filter layers 111 distributed along a first direction. The first direction is the direction of a diameter on the cross section of the annular structure. Figure 2 As shown, the filter layer is strip-shaped in the cross-section of the annular structure. Multiple filter layers are distributed along a first direction. After the filter tip is formed, the gaps between adjacent filter layers form a flow channel for the smoke. In this embodiment, the smoke flows between the layered structure, with a large contact area with the paper filter layer, further enhancing the smoke cooling effect and improving the smoke's safety and taste. Furthermore, the filter plug core of this embodiment is easy to manufacture and arrange.

[0034] In some embodiments, as Figure 2 and Figure 3 As shown, in the cross-section of the cigarette paper filter rod, the filter layer is strip-shaped, and the filter layer 111 includes a zigzag structure extending perpendicularly to the first direction. The zigzag structure extends perpendicularly to the first direction in the cross-section of the cigarette paper filter rod. In this embodiment, the zigzag design of the filter layer 111 increases the contact area with the paper filter layer when the smoke flows between the layers, further improving the smoke cooling effect and making the filter layer's structure more stable.

[0035] In some embodiments, as Figure 3As shown, along the axial direction of the annular structure, the filtering structure includes a multi-stage layered structure 11, and the density of the multi-stage layered structure 11 increases in sequence along the axial direction of the annular structure. Figure 3 The cross-sectional view of a filter rod shown in Figure 2 shows different densities of the two layered structures. The layered structure on the left side of the reader's perspective has a higher density, while the layered structure on the right side has a lower density. The density of the layered structure refers to the sparseness of the smoke passage through the layered structure. Layered structures of varying densities can be created by arranging different numbers of filter layers. Figure 3 In the two-stage layered structure shown, the layered structure on the left side of the reader's perspective has more filter layers than the layered structure on the right side. This embodiment allows the filter formed by the filter rod to have multiple layers with different densities. For example, the portion near the mouth can use a lower density layered structure to reduce resistance, while the portion near the lit cigarette side can use a higher density, more tightly curled structure to enhance the filtration effect.

[0036] In some embodiments, on the cross section of the cigarette paper core filter rod, the layered structure 11 includes a plurality of annular paper filter layers 111, and the annular filter layers 111 are sequentially arranged along a first direction, where the first direction is the direction of a diameter on the cross section of the annular structure. Figure 4 As shown, the filter layer is annular in cross-section, with multiple filter layers arranged along a first direction, with the inner annular filter layer surrounded by the outer annular filter layer. After the filter is formed, the gaps between adjacent filter layers form a flow channel for the smoke. In this embodiment, the smoke flows between the layered structure, with a large contact area with the paper filter layer, further enhancing the smoke cooling effect and improving the smoke's safety and taste.

[0037] In some embodiments, the annular filter layer 111 is a zigzag structure extending circumferentially. This embodiment designates the filter layer 111 as a zigzag structure. When smoke flows between the layers, the contact area with the paper filter layer is increased, further enhancing the cooling effect of the smoke and making the filter layer's structure more stable.

[0038] In some embodiments, the filter layer 111 is shaped like a spiral structure on the cross-section of a cigarette paper filter plug, which is formed by axial movement and rotation along the annular structure. In this embodiment, the spiral structure of the filter layer can increase the air flow path length, improve the cooling effect of the smoke, and enhance the filtration effect.

[0039] In some embodiments, a cigarette is further disclosed, comprising a filter tip, wherein the filter tip comprises a smoking section formed by cutting any of the above-mentioned cigarette paper core filter rods.

[0040] In some embodiments, the filtering structure of the paper core filter rod for cigarettes includes a layered structure 11. On the cross section of the paper core filter rod for cigarettes, the layered structure 11 includes multiple strip-shaped paper filter layers 111 distributed along a first direction. The first direction is the direction of a diameter on the cross section of the annular structure. Along the axial direction of the annular structure, the suction section includes multiple sections of the layered structure 11, and the density of the multiple sections of the layered structure 11 increases successively along the axial direction of the cigarette away from the suction side.

[0041] In some embodiments, the filter is located at the free end of the cigarette.

[0042] 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 paper core filter rod for cigarettes, characterized in that: include: The filter plug core comprises a strip-shaped filter structure formed of paper material; A fixing layer, comprising an annular structure formed by acetate fiber tow, wherein the annular structure wraps the filter rod core; The wrapping paper wraps the fixing layer from the outside of the fixing layer, the filtering structure includes a layered structure, and on the cross section of the cigarette paper core filter rod, the layered structure includes multiple paper filter layers distributed along a first direction, and the first direction is the direction of a diameter on the cross section of the annular structure.

2. The cigarette paper core filter rod according to claim 1, wherein: In the cross section of the cigarette paper core filter rod, the filter layer is in a strip shape, and the filter layer includes a zigzag structure extending in a direction perpendicular to the first direction.

3. The cigarette paper core filter rod according to claim 1, wherein: In the cross section of the cigarette paper core filter rod, the layered structure includes a plurality of annular paper filter layers, and the annular filter layers are sequentially arranged along a first direction.

4. The cigarette paper core filter rod according to claim 3, wherein: The annular filter layer includes a zigzag structure extending along the circumferential direction.

5. The cigarette paper core filter rod according to claim 3 or 4, characterized in that: The filter layer is a spiral structure formed by moving along the axial direction of the annular structure and rotating around the axial direction of the annular structure according to the shape of the filter layer in the cross section of the cigarette paper core filter rod.

6. The cigarette paper core filter rod according to any one of claims 1 to 4, characterized in that: Along the axial direction of the annular structure, the filtering structure includes a multi-stage layered structure, and the density of the multi-stage layered structure increases sequentially along the axial direction of the annular structure.

7. A cigarette, including a filter, characterized in that: The filter tip comprises a smoking section formed by cutting the cigarette paper core filter rod according to any one of claims 1 to 6.

8. The cigarette according to claim 7, characterized in that The filtering structure of the cigarette paper core filter rod includes a layered structure. On the cross section of the cigarette paper core filter rod, the layered structure includes multiple strip-shaped paper filter layers distributed along a first direction. The first direction is the direction of a diameter on the cross section of the annular structure. Along the axial direction of the annular structure, the suction section includes multiple layered structures. The density of the multiple layered structures increases successively along the axial direction of the cigarette away from the suction side.

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