Two-channel filter stick for cigarette and cigarette

Abstract

The dual-channel filter stick for the cigarette comprises a filter stick body, the filter stick body comprises a smoke flowing channel arranged in the middle of the filter stick body, the smoke flowing channel comprises a first through hole and a second through hole, the first through hole and the second through hole are formed in a spaced mode, and the first through hole and the second through hole are both formed by extending a hole along an extension line; the extension line of the first through hole is parallel to the extension line of the second through hole; and the forming paper wraps the filter stick body from the outer side of the filter stick body.

Description

Technical Field

[0001] The utility model relates to the field of tobacco products, and particularly relates to a dual-channel filter rod and a cigarette for cigarettes. Background Art

[0002] Tar harmful to the human body exists in cigarette smoke. Installing a filter tip on a cigarette can effectively reduce tar and other harmful components. A filter rod refers to a rod-shaped body made of a filtering material, processed and rolled, having a filtering performance and a certain length. The filter rod that is directly installed at the suction end of a cigarette after being cut or installed at the suction end of a cigarette after being compounded with other filter section structures is a filter tip, which plays a filtering role for certain substances in cigarette smoke, such as tar and nicotine, and at the same time has a temperature-reducing and guiding effect on the smoke. It is an integral part of a filter-tip cigarette. Specifically, the filtration of particulate matter by the filter rod belongs to mechanical filtration. The main mechanisms causing the filtration of cigarette smoke particles are direct interception, inertial collision, and diffusion deposition. Filter-tip cigarettes have the advantage of avoiding the discomfort caused by tobacco dust sticking to the lips, reducing harmful substances in the smoke, and being able to provide smoke with an appropriate temperature and taste to the smoker, so they are quickly accepted by smokers. Summary of the Invention

[0003] The purpose of the utility model is to provide a dual-channel filter rod for cigarettes that can improve the taste of cigarette smoke after forming the filter tip, and a cigarette using the dual-channel filter rod for cigarettes.

[0004] The utility model discloses a dual-channel filter rod for cigarettes, comprising:

[0005] A filter rod body, including a smoke flow channel provided in the middle thereof. The smoke flow channel includes a first through hole and a second through hole arranged at intervals. Both the first through hole and the second through hole are obtained by extending a hole along an extension line. The extension line of the first through hole and the extension line of the second through hole are parallel to each other;

[0006] Forming paper, wrapping the filter rod body from the outside of the filter rod body.

[0007] In some embodiments, both the first through hole and the second through hole are spiral through holes with a spiral extension line.

[0008] In some embodiments, the shapes of the first through hole and the second through hole in the cross-section of the filter rod body are the same.

[0009] In some embodiments, the shapes of the first through hole and the second through hole in the cross-section of the filter rod body are centrosymmetric.

[0010] In some embodiments, the cross-sectional shape of the first through hole is formed by a first arc, a second arc, and a third arc that are sequentially connected end to end. The first arc is tangent to the second arc, and the first arc is tangent to the third arc.

[0011] In some embodiments, the filter rod body is a cylindrical filter rod body, and the third arc is coaxial with the filter rod body.

[0012] In some embodiments, the wall thickness of the filter rod body between the third arc and the outer contour of the filter rod body is 1.5 - 2 mm.

[0013] In some embodiments, the filter rod body includes an intermediate wall with a uniform wall thickness between the first round hole and the second round hole, and the thickness of the intermediate wall is 1.7 - 2.2 mm.

[0014] In some embodiments, the first arc is a semi-circular arc.

[0015] A second aspect of the present utility model discloses a cigarette, which includes a filter tip, and the filter tip includes a suction section formed by cutting any one of the dual-channel filter rods for cigarettes.

[0016] Based on the dual-channel filter rod for cigarettes provided by the present utility model, by providing a smoke passage including a first through hole and a second through hole in the middle of the filter rod body, the extension lines of the first through hole and the second through hole are parallel to each other. When the cigarette is smoked, the smoke can be divided into two strands and transported to the smoker through the first through hole and the second through hole. Since the extension lines of the first through hole and the second through hole are parallel to each other, the smoke can be transported to the smoker more evenly, the smoking taste of the smoke is good, the smoke can contact more channel surfaces when flowing, the cooling effect of the smoke can be improved, and the smoking safety and taste of the smoke can be enhanced.

[0017] Through the following detailed description of the exemplary embodiments of the present utility model with reference to the accompanying drawings, other features and advantages of the present utility model will become clear. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] The accompanying drawings described herein are used to provide a further understanding of the present utility model, and constitute a part of this application. The schematic embodiments of the present utility model and their descriptions are used to explain the present utility model and do not constitute an improper limitation of the present utility model. In the drawings:

[0019] Figure 1 is a schematic structural diagram of the dual-channel filter rod for cigarettes according to an embodiment of the present utility model;

[0020] Figure 2 is Figure 1 the cross-sectional structural diagram of the dual-channel filter rod for cigarettes shown. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0021] The technical solutions in the embodiments of the present utility model will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present utility model. Obviously, the described embodiments are only a part of the embodiments of the present utility model, rather than all embodiments. The following description of at least one exemplary embodiment is actually illustrative only and in no way limits the present utility model, its application or use. All other embodiments obtained by those of ordinary skill in the art based on the embodiments of the present utility model without creative efforts belong to the scope of protection of the present utility model.

[0022] Unless otherwise specifically stated, the relative arrangements, numerical expressions and values of the components and steps set forth in these embodiments do not limit the scope of the present utility model. At the same time, it should be understood that, for the sake of convenience of description, the sizes of the various parts shown in the drawings are not drawn in actual proportional relationship. Technologies, methods and devices known to those of ordinary skill in the relevant art may not be discussed in detail, but where appropriate, the said technologies, methods and devices should be regarded as part of the description. In all the examples shown and discussed here, any specific value should be construed as merely exemplary and not as a limitation. Therefore, other examples of the exemplary embodiments may have different values. It should be noted that: like reference numerals and letters denote like items in the following drawings, and thus, once an item is defined in one drawing, it does not need to be further discussed in subsequent drawings.

[0023] In the description of the present utility model, it should be understood that the use of terms such as "first" and "second" to limit components is only for the convenience of differentiating the corresponding components. Without otherwise stating, the above terms have no special meanings and thus cannot be construed as limiting the scope of protection of the present utility model.

[0024] In the description of the present utility model, it should be noted that unless otherwise clearly defined and limited, the terms "mounted", "connected" and "coupled" should be understood in a broad sense. For example, it may be a fixed connection, a detachable connection or an integral connection; it may be a direct connection or an indirect connection through an intermediate medium. For those of ordinary skill in the art, the specific meanings of the above terms in the present utility model can be understood according to specific situations.

[0025] For ease of description, spatial relative terms, such as "above", "on top of", "on the upper surface", "upper", etc., may be used herein to describe the spatial positional relationship of one device or feature to other devices or features as shown in the figures. It should be understood that the spatial relative terms are intended to encompass different orientations in use or operation in addition to the orientation depicted in the figures. For example, if the device in the figures is inverted, the device described as "above" or "on top of" other devices or structures will then be positioned "below" or "beneath" the other devices or structures. Thus, the exemplary term "above" can include both the orientations of "above" and "below". The device may also be positioned in other different ways (rotated 90 degrees or in other orientations), and the corresponding interpretations of the spatial relative descriptions used herein will be made accordingly.

[0026] As Figure 1 and Figure 2 shown, the double-channel filter rod for cigarettes of this embodiment includes a filter rod body 2 and a forming paper 1.

[0027] The filter rod body 2 includes a smoke flow channel disposed in the middle thereof. The middle of the filter rod body 2 refers to the middle in the cross-sectional direction thereof. The filter rod body 2 can be formed by solidifying and shaping a cellulose diacetate tow after adding triacetin. The smoke flow channel is used to pass smoke during cigarette suction. The smoke flow channel includes first through holes 31 and second through holes 32 arranged at intervals. Both the first through holes 31 and the second through holes 32 are obtained by extending a hole along an extension line, that is, the first through holes 31 and the second through holes 32 are obtained by extending a planar hole along an extension line, which is equivalent to obtaining by sweeping a closed graphic as the sweeping object along a path. The planar hole is a closed graphic and the extension line is the path. The extension lines of the first through holes 31 and the second through holes 32 are parallel to each other, so the flow directions of the smoke passing through the first through holes 31 and the second through holes 32 are also parallel to each other. The two extension lines being parallel means that the distances between two points of the two extension lines at any cross-section are equal. The two extension lines can be two straight lines or two curves. The concept of parallel in this application is not limited to straight lines.

[0028] The forming paper 1 wraps the filter rod body 2 from the outside of the filter rod body 2 to form a double-channel filter rod for cigarettes. The double-channel filter rod for cigarettes can be cut into individual suction segments, and the suction segments can directly form or form the filter tip of a cigarette for the smoker to use after being compounded and connected with other filtering structures.

[0029] The dual-channel filter rod for cigarettes in this embodiment is provided with a smoke passage including a first through-hole and a second through-hole in the middle of the filter rod body. The extension lines of the first through-hole and the second through-hole are parallel to each other. When the cigarette is sucked, the smoke can be divided into two streams and transported to the smoker through the first through-hole and the second through-hole. Since the extension lines of the first through-hole and the second through-hole are parallel to each other, the smoke can be transported to the smoker more evenly, the smoking taste of the smoke is good, the smoke can contact more flow channel surfaces when flowing, which can improve the cooling effect of the smoke, and enhance the smoking safety and taste of the smoke.

[0030] In some embodiments, as shown in the figure, both the first through-hole 31 and the second through-hole 32 are spiral through-holes with spiral lines as extension lines. The flow path of the smoke flowing in the spiral channel formed by the spiral through-hole is increased, the flow velocity of the smoke flow is further reduced, the smoke can contact more flow channel surfaces when flowing, which can further improve the cooling effect of the smoke, enhance the smoking safety and taste of the smoke. At the same time, the smoke flowing in the spiral extension groove can improve the vortex effect of the smoke, and can improve the smoking experience when sucking. Since the extension lines of the first channel and the second channel are parallel to each other, the smoke can flow into the smoker's mouth more evenly when flowing out of the first channel and the second channel, further enhancing the smoking experience.

[0031] In some embodiments, the shapes of the first through-hole 31 and the second through-hole 32 in the cross-section of the filter rod body 2 are the same. This embodiment can further improve the uniformity of the smoke when flowing out of the smoke flow channel, and further improve the smoking experience.

[0032] In some embodiments, the shapes of the first through-hole 31 and the second through-hole 32 in the cross-section of the filter rod body 2 are centrosymmetric. When the smoke flows in the spiral through-hole, it has a flow velocity along the axial direction of the filter rod body and a circumferential flow velocity around the axis of the filter rod body. Since the shapes of the first through-hole 31 and the second through-hole 32 in the cross-section of the filter rod body 2 are centrosymmetric, the smoke can be more evenly distributed in the circumferential direction when flowing out of the smoke flow channel, which can further improve the uniformity of the smoke when flowing out of the smoke flow channel, and further improve the smoking experience.

[0033] In some embodiments, as shown in the figure, the first through-hole and the second through-hole have the same shape. The cross-sectional shape of the first through-hole 31 is formed by a first arc 331, a second arc 332 and a third arc 333 connected end to end in sequence. The first arc 331 is tangent to the second arc 332, and the first arc 331 is tangent to the third arc 333. The first through-hole and the second through-hole in this embodiment flow in the through-hole formed by the arc, with small flow resistance, large smoke contact flue area and good cooling effect. In the embodiment shown in the figure, the first through-hole and the second through-hole form a shape similar to the Tai Chi pattern. At the same time, due to the smoke flow channel formed by the tangent arcs, it is also convenient for production and manufacturing.

[0034] In some embodiments, the filter rod body 2 is a cylindrical filter rod body 2, and the third arc 333 is coaxial with the filter rod body 2. The dual-channel filter rod for cigarettes in this embodiment is convenient for processing and manufacturing, and can more reasonably arrange the position of the flue gas flow channel on the cross-section of the filter rod body.

[0035] In some embodiments, the wall thickness between the third arc 333 and the outer contour of the filter rod body 2 of the filter rod body 2, that is, the wall thickness of the outer wall, is 1.5 to 2 mm. If the wall thickness is less than this range, the strength of the outer wall of the filter rod is insufficient and it is easy to crack. If the wall thickness is greater than this range, the formation space of the flue gas flow channel is limited, affecting the size of the flue gas flow channel and being unfavorable to the flow of the flue gas.

[0036] In some embodiments, the filter rod body 2 includes an intermediate wall 21 with a uniform wall thickness between the first round hole and the second round hole. The thickness of the intermediate wall 21 is 1.7 to 2.2 mm. Since the intermediate wall is in contact with the flue gas flow on both sides and the shape of the intermediate wall results in relatively weak strength, in order to ensure that the strength does not crack, a thicker wall thickness requirement is needed compared to the outer wall. If the wall thickness is less than this range, the strength of the intermediate wall of the filter rod body is insufficient and it is easy to crack. If the wall thickness is greater than this range, the formation space of the flue gas flow channel is limited, affecting the size of the flue gas flow channel and being unfavorable to the flow of the flue gas.

[0037] In some embodiments, the first arc 331 is a semi-circular arc.

[0038] In some embodiments, a cigarette is also disclosed. The cigarette includes a filter tip, and the filter tip includes a suction section formed by cutting any of the above-mentioned dual-channel filter rods for cigarettes.

[0039] In some embodiments, the filter tip is provided at the free end of the cigarette.

[0040] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention and are not intended to limit them; although the present invention has been described in detail with reference to the preferred embodiments, those of ordinary skill in the art should understand that: still modifications can be made to the specific implementation manners of the present invention or equivalent replacements can be made to some technical features; without departing from the spirit of the technical solutions of the present invention, they should all be covered within the scope of the technical solutions claimed by the present invention.

Claims

1. A double-channel filter rod for cigarettes, characterized in that: include: The filter rod body comprises a smoke flow channel arranged in the middle thereof, wherein the smoke flow channel comprises a first through hole and a second through hole arranged at intervals, wherein the first through hole and the second through hole are both obtained by extending a hole along an extension line, and the extension line of the first through hole and the extension line of the second through hole are parallel to each other; The shaping paper wraps the filter rod body from the outside of the filter rod body.

2. The dual-channel filter rod for cigarettes according to claim 1, characterized in that: The first through hole and the second through hole are both spiral through holes whose extension lines are spiral lines.

3. The dual-channel filter rod for cigarettes according to claim 1 or 2, characterized in that: The first through hole and the second through hole have the same shape in a cross section of the filter rod body.

4. The dual-channel filter rod for cigarettes according to claim 3, characterized in that: The shapes of the first through hole and the second through hole on the cross section of the filter rod body are centrally symmetrical.

5. The dual-channel filter rod for cigarettes according to claim 4, characterized in that: The cross-sectional shape of the first through hole is formed by a first circular arc, a second circular arc and a third circular arc connected end to end in sequence, the first circular arc is tangent to the second circular arc, and the first circular arc is tangent to the third circular arc.

6. The dual-channel filter rod for cigarettes according to claim 5, characterized in that: The filter rod body is a cylindrical filter rod body, and the third circular arc is coaxial with the filter rod body.

7. The dual-channel filter rod for cigarettes according to claim 6, characterized in that: The wall thickness of the filter rod body between the third arc and the outer contour of the filter rod body is 1.5-2 mm.

8. The dual-channel filter rod for cigarettes according to claim 5, characterized in that: The filter rod body comprises a middle wall with uniform wall thickness between the first through hole and the second through hole, and the thickness of the middle wall is 1.7-2.2 mm.

9. The dual-channel filter rod for cigarettes according to claim 5, characterized in that: The first arc is a semicircular arc.

10. A cigarette, comprising a filter, characterized in that: The filter tip comprises a smoking section formed by cutting the double-channel filter rod for cigarettes according to any one of claims 1 to 9.

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