Composite filter rod and cigarette

Abstract

The utility model discloses a kind of composite filter rod and cigarette, it is related to cigarette production technical field, including first filter rod section and two second filter rod sections;First filter rod section is cavity section, the inside of first filter rod section has funnel-shaped cavity, one end of first filter rod section is provided with cavity air inlet, the other end of first filter rod section is provided with cavity air outlet, the inside wall of funnel-shaped cavity gradually contracts inward from cavity air inlet to cavity air outlet, mobile blocking body is equipped in funnel-shaped cavity, mobile blocking body can move from cavity air inlet to cavity air outlet;Second filter rod section is filament non-woven cloth mixed section;First filter rod section is fixed between two second filter rod sections;The composite filter rod and cigarette disclosed in the utility model can improve production efficiency, and can reduce the content of tar in flue gas.

Description

Technical Field

[0001] This utility model relates to the field of cigarette production technology, and in particular to a composite filter rod and a cigarette. Background Technology

[0002] Cigarette filters are an important component of cigarettes. They can effectively trap and filter harmful substances in cigarette smoke, reducing tar and harm, and minimizing the potential health hazards of smoking.

[0003] Conventional wood pulp nonwoven filter rods are relatively soft, have a poor appearance, poor adhesion at the joints of the filter rod forming paper, are difficult to laminate, and have poor slagging effect. Specifically, existing wood pulp nonwoven filter rods use nonwoven fabrics of different widths depending on the circumference of the filter rod. By applying different pressures and temperatures to the nonwoven fabric, the suction resistance of the resulting filter rod is made to achieve the desired effect. However, because the thickness of the nonwoven fabric decreases under stress, its tensile strength is significantly reduced, resulting in slow production speed. Furthermore, the nonwoven fabric becomes more flexible under stress, leading to insufficient hardness in the formed filter rods. When passing through the forming machine, it cannot provide sufficient support for the forming paper, resulting in poor adhesion at the joints and a tendency for the joints to burst. In addition, the insufficient hardness during the filter rod lamination process leads to low lamination efficiency of the laminating machine. Utility Model Content

[0004] The purpose of this invention is to provide a composite filter rod and cigarette to solve the problems existing in the prior art, improve production efficiency, and reduce the tar content in the smoke.

[0005] To achieve the above objectives, this utility model provides the following solution: This utility model provides a composite filter rod, including a first filter rod segment and two second filter rod segments; the first filter rod segment is a cavity segment, the interior of the first filter rod segment has a funnel-shaped cavity, one end of the first filter rod segment has a cavity air inlet, the other end of the first filter rod segment has a cavity air outlet, the inner sidewall of the funnel-shaped cavity gradually contracts inward from the cavity air inlet to the cavity air outlet, and a movable obstruction is provided in the funnel-shaped cavity, the movable obstruction being movable from the cavity air inlet to the cavity air outlet; the second filter rod segments are mixed segments of towed nonwoven fabric; the first filter rod segment is fixedly placed between the two second filter rod segments.

[0006] Preferably, the second filter rod segment is a cellulose acetate nonwoven fabric mixed segment.

[0007] Preferably, it also includes a base rod forming paper, which is fixedly wrapped around the second filter rod segment.

[0008] Preferably, it further includes a composite molding paper, which is fixedly wrapped around the first filter rod segment and the two second filter rod segments; the base rod molding paper is placed between the composite molding paper and the second filter rod segments.

[0009] Preferably, the cross-section of the first filter rod segment is annular, and the movable obstruction is spherical.

[0010] Preferably, the movable obstruction is a rigid sphere.

[0011] Preferably, the first filter rod segment is a filament bundle segment.

[0012] This utility model also provides a cigarette, including the composite filter rod described above.

[0013] The present invention achieves the following technical advantages over the prior art: The composite filter rod and cigarette provided by this utility model, on the one hand, improve the hardness and roundness of the second filter rod segment by setting the second filter rod segment to a mixture of tow non-woven fabric, which facilitates the bonding of the forming paper and the composite of the second filter rod segment and the first filter rod segment, thereby improving production efficiency. On the other hand, by setting a funnel-shaped cavity inside the first filter rod segment and setting a movable obstruction in the funnel-shaped cavity, the movable obstruction can move from the air inlet to the air outlet of the cavity. As the smoke passes through the second filter rod segment-first filter rod segment-second filter rod segment in sequence and is inhaled into the mouth, the movable obstruction moves towards the air outlet of the cavity. The closer to the air outlet of the cavity, the smaller the gap between the movable obstruction and the inner wall of the funnel-shaped cavity, thereby increasing the smoke pressure and the flow rate, increasing the adsorption effect of the composite filter rod on the tar in the smoke, and achieving multiple tar reduction effects, thus reducing the tar content in the smoke. Attached Figure Description

[0014] To more clearly illustrate the technical solutions in the embodiments of this utility model or the prior art, the drawings used in the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0015] Figure 1 A schematic diagram of the composite filter rod provided by this utility model; In the diagram: 1-First filter rod section, 2-Second filter rod section, 3-Funnel-shaped cavity, 4-Moving barrier, 5-Cavity air inlet, 6-Cavity air outlet. Detailed Implementation

[0016] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0017] The purpose of this invention is to provide a composite filter rod and cigarette to solve the problems existing in the prior art, improve production efficiency, and reduce the tar content in the smoke.

[0018] To make the above-mentioned objectives, features and advantages of this utility model more apparent and understandable, the utility model will be further described in detail below with reference to the accompanying drawings and specific embodiments.

[0019] Example 1 like Figure 1 As shown, this embodiment provides a composite filter rod, including a first filter rod segment 1 and two second filter rod segments 2; the first filter rod segment 1 is a cavity segment, and the interior of the first filter rod segment 1 has a funnel-shaped cavity 3. One end of the first filter rod segment 1 is provided with a cavity air inlet 5, and the other end of the first filter rod segment 1 is provided with a cavity air outlet 6. The inner sidewall of the funnel-shaped cavity 3 gradually contracts inward from the cavity air inlet 5 to the cavity air outlet 6. A movable obstruction 4 is provided inside the funnel-shaped cavity 3, and the movable obstruction 4 can move from the cavity air inlet 5 to the cavity air outlet 6; the second filter rod segment 2 is a filament nonwoven fabric mixed segment; the first filter rod segment 1 is fixedly placed between the two second filter rod segments 2.

[0020] The composite filter rod provided in this embodiment has two advantages. First, by setting the second filter rod segment 2 to be a mixed segment of filament nonwoven fabric, the hardness and roundness of the second filter rod segment 2 are improved, making it easier to bond the forming paper and to combine the second filter rod segment 2 with the first filter rod segment 1, thus improving production efficiency. Second, by setting a funnel-shaped cavity 3 inside the first filter rod segment 1, and providing a movable obstruction 4 inside the funnel-shaped cavity 3, the movable obstruction 4 can move from the cavity inlet 5 to the cavity outlet 6. As the flue gas passes through the second filter rod segment 2-first filter rod segment 1-second filter rod segment 2 in sequence and is then inhaled into the mouth, the movable obstruction 4 moves towards the cavity outlet 6. The closer it is to the cavity outlet 6, the smaller the gap between the movable obstruction 4 and the inner wall of the funnel-shaped cavity 3, thereby increasing the flue gas pressure and flow rate, increasing the adsorption effect of the composite filter rod on tar in the flue gas, and achieving multiple tar reduction effects, thus reducing the tar content in the flue gas.

[0021] In a preferred embodiment of this invention, the second filter rod segment 2 is a cellulose acetate nonwoven fabric mixed segment, which can effectively improve the hardness of the second filter rod segment 2. The cellulose acetate tow is a polymer material made from natural cellulose (wood, cotton linters, etc.) as raw material, which is cellulose acetate after being treated with acetic acid and then produced by spinning and other processes. In this embodiment, during the molding process of the second filter rod segment 2, a mixture of polyethylene glycol and triacetin is sprayed onto the cellulose acetate tow so that the cellulose acetate tow adheres to the pleated wood pulp nonwoven fabric, thereby improving the hardness and obtaining the cellulose acetate nonwoven fabric mixed segment.

[0022] As a preferred embodiment of this invention, the composite filter rod provided in this invention also includes a base rod forming paper, which is fixedly wrapped around the second filter rod segment 2 to facilitate the forming of the second filter rod segment 2.

[0023] As a preferred embodiment of this invention, the composite filter rod provided in this embodiment also includes composite molding paper, which is fixedly wrapped around the first filter rod segment 1 and the two second filter rod segments 2 to improve the integrity of the composite filter rod; the base rod molding paper is placed between the composite molding paper and the second filter rod segments 2.

[0024] As a preferred embodiment of this invention, the cross-section of the first filter rod section 1 is annular, and the movable obstruction body 4 is spherical, which facilitates the increase of flue gas pressure and flow rate.

[0025] As a preferred embodiment of this invention, the movable blocking body 4 is a rigid sphere to prevent deformation of the movable blocking body 4 due to negative pressure during the process of smoke being inhaled into the mouth.

[0026] As a preferred embodiment of this invention, the first filter rod segment 1 is a filament bundle segment, which is convenient to manufacture and use.

[0027] A preferred method for preparing the composite filter rod provided in this embodiment includes the following steps: Step 1: Unwind the wood pulp nonwoven fabric and diacetate fiber tow; Step 2: Open the wood pulp nonwoven fabric and diacetate fiber bundles; Step 3: Emboss the wood pulp nonwoven fabric to obtain a wood pulp nonwoven fabric with longitudinal pleats; Step 4: Mix the opened diacetate fiber bundles with the embossed wood pulp nonwoven fabric, and spray a mixture of polyethylene glycol and triacetyl ester onto the diacetate fiber bundles before mixing. Step 5: The spray gun sprays out the mixed pleated wood pulp nonwoven fabric and diacetate fiber filaments, which are then wrapped around the first forming paper to form the second filter rod segment 2; Step 6: Wrap the first filter rod segment 1 and the two second filter rod segments 2 with the second forming paper.

[0028] Example 2 This embodiment provides a cigarette, including the composite filter rod from Embodiment 1.

[0029] The cigarette provided in this embodiment, on the one hand, improves the hardness and roundness of the second filter rod segment 2 by setting it to a mixed segment of tow nonwoven fabric, which facilitates the bonding of the forming paper and the composite of the second filter rod segment 2 and the first filter rod segment 1, thereby improving production efficiency. On the other hand, by setting a funnel-shaped cavity 3 inside the first filter rod segment 1, and providing a movable obstruction 4 inside the funnel-shaped cavity 3, the movable obstruction 4 can move from the cavity air inlet 5 to the cavity air outlet 6. As the smoke passes through the second filter rod segment 2-first filter rod segment 1-second filter rod segment 2 in sequence and is inhaled into the mouth, the movable obstruction 4 moves towards the cavity air outlet 6. The closer it is to the cavity air outlet 6, the smaller the gap between the movable obstruction 4 and the inner wall of the funnel-shaped cavity 3, thereby increasing the smoke pressure and flow rate, increasing the adsorption effect of the composite filter rod on the tar in the smoke, and achieving multiple tar reduction effects, thus reducing the tar content in the smoke.

[0030] This utility model uses specific examples to illustrate its principles and implementation methods. The above description of the embodiments is only for the purpose of helping to understand the method and core idea of ​​this utility model. At the same time, for those skilled in the art, there will be changes in the specific implementation methods and application scope based on the idea of ​​this utility model. In summary, the content of this specification should not be construed as a limitation of this utility model.

Claims

1. A composite filter rod, characterized in that: It includes the first filter rod section and two second filter rod sections; The first filter rod segment is a cavity segment, and the interior of the first filter rod segment has a funnel-shaped cavity. One end of the first filter rod segment has a cavity air inlet, and the other end of the first filter rod segment has a cavity air outlet. The inner sidewall of the funnel-shaped cavity gradually contracts inward from the cavity air inlet to the cavity air outlet. A movable obstruction is provided inside the funnel-shaped cavity, and the movable obstruction can move from the cavity air inlet to the cavity air outlet. The second filter rod section is a section composed of mixed filament nonwoven fabric; The first filter rod segment is fixedly placed between the two second filter rod segments.

2. The composite filter rod according to claim 1, characterized in that: The second filter rod section is a mixture of cellulose acetate nonwoven fabric and filter rod.

3. The composite filter rod according to claim 1, characterized in that: It also includes a base rod forming paper, which is fixedly wrapped around the second filter rod segment.

4. The composite filter rod according to claim 3, characterized in that: It also includes a composite molding paper, which is fixedly wrapped around the first filter rod segment and the two second filter rod segments; the base rod molding paper is placed between the composite molding paper and the second filter rod segments.

5. The composite filter rod according to claim 1, characterized in that: The first filter rod segment has a circular cross-section, and the movable barrier is spherical.

6. The composite filter rod according to claim 5, characterized in that: The movable obstruction is a hard sphere.

7. The composite filter rod according to claim 1, characterized in that: The first filter rod segment is a filament bundle segment.

8. A cigarette, characterized in that: Includes the composite filter rod as described in any one of claims 1 to 7.

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