A composite filter

Abstract

The utility model provides a kind of composite filter tip, the composite filter tip includes filter core and tipping paper of wrapping filter core;The filter core includes the conventional filter core section and injection molded filter stick support section connected in turn;The injection molded filter stick support section inside is provided at least two first axial through hole or the second axial through hole formed by the hole of at least two different aperture being connected is arranged.The composite filter tip provided by the utility model can reduce resistance, improve smoke amount, and can reduce smoke temperature into mouth, provide different smoke style features, suitable for the evaluation of different tobacco leaf module effect.

Description

Technical Field

[0001] This utility model belongs to the field of cigarette filter technology, specifically relating to a composite filter. Background Technology

[0002] Slim / medium-sized cigarettes are new cigarette products that have emerged in recent years and are attracting increasing attention from companies. Slim cigarettes have a circumference of around 17mm and a length typically of 97 or 100mm, while medium-sized cigarettes have a circumference of 20mm or 22mm and a length typically of 84mm or 90mm. Compared to conventional cigarettes, slim or medium-sized cigarettes often have significantly higher draw resistance, resulting in a noticeable reduction in smoke volume. Additionally, the inhaled smoke temperature is higher in the last few puffs, negatively impacting the smoking experience. New tobacco products, such as heated tobacco products, often generate smoke by heating tobacco sheets containing propylene glycol and glycerol. Typical filters, such as acetate filters, have a high filtration efficiency, but the excessively high smoke temperature also negatively affects the smoking experience. The tobacco module is a crucial component of slim, medium, or heated tobacco products and significantly influences their sensory quality. Therefore, to evaluate the effectiveness of the tobacco module, a filter with low smoke filtration efficiency needs to be designed.

[0003] CN200910065339.9 discloses a simulation device for evaluating the filtration performance of cigarette filters, including an auxiliary unit and a material-carrying unit. The auxiliary unit consists of a fixed support and a feeding funnel; the material-carrying unit is a transparent sleeve tightly integrated with a cigarette catcher. Inside the transparent sleeve are a cigarette clamping component and a transparent annular cavity component for filling with test material. The advantages of this invention are: 1) The device can simulate various types of cigarette filters, including binary composite filters, ternary composite filters, and single ordinary filters; 2) When simulating a multi-component composite filter, the shape of the added material after filling is cylindrical and the same as the circumference of the filter rod. During inhalation, the movement trajectory and interception status of the smoke are close to those in a real composite filter, thus more realistically evaluating the harm-reduction effect of the added material applied to the cigarette filter; 3) The device is directly connected to the catcher, avoiding systematic errors caused by excessive connecting accessories. However, this device is relatively complex, requiring specialized equipment for evaluating cigarette filtration performance, and its application scope is limited.

[0004] CN202010996567.4 discloses a method for accurately detecting and quantifying the ease of smoking cigarettes, belonging to the field of tobacco manufacturing technology. This method first randomly selects an equal number of cigarettes from each cigarette sample, discarding those with obvious defects, and then balances them. Under the test conditions specified in GB / T 16447, the cigarettes are smoked using a smoking cycle simulator in ISO smoking mode. The dynamic draw resistance data for each puff is recorded, and the amount of smoke inhaled per puff is measured. The measured dynamic draw resistance and smoke amount data are then standardized. Finally, the ratio of the smoke amount to the dynamic draw resistance in the first three puffs is used to calculate and characterize the ease of smoking. However, this invention requires specialized equipment for evaluation, which is not conducive to large-scale promotion.

[0005] Therefore, in order to evaluate the effectiveness of the tobacco module, how to provide a filter with low smoke filtration efficiency has become an urgent problem to be solved. Utility Model Content

[0006] To address the shortcomings of existing technologies, the purpose of this invention is to provide a composite filter. The composite filter provided by this invention can reduce draw resistance, increase smoke volume, lower the smoke inlet temperature, provide different smoke characteristics, and is suitable for evaluating the effects of different tobacco modules.

[0007] To achieve the objective of this utility model, the following technical solution is adopted:

[0008] This utility model provides a composite filter tip, which includes a filter element and a splicing paper that wraps the filter element;

[0009] The filter element includes a conventional filter element section and an injection-molded filter rod support section connected in sequence;

[0010] The injection-molded filter rod support section is provided with at least two first axial through channels or a second axial through channel formed by connecting at least two channels of different diameters.

[0011] The above solution combines the conventional filter element section and the injection-molded filter rod support section, and utilizes a through channel to reduce suction resistance, increase smoke volume, and lower the smoke inlet temperature, providing different smoke style characteristics and suitable for evaluating the effects of different tobacco modules.

[0012] The aforementioned injection-molded filter rod support section is made by melting and injection molding polymer materials using a filter rod molding die, and is a rigid structure.

[0013] Preferably, the conventional filter element segment includes any one of cellulose acetate filter element, paper filter element, or non-woven fabric filter element.

[0014] Preferably, the cross-sectional shape of the first axial through-hole includes a circle, triangle, quadrilateral, pentagon, hexagon, pentagonal star, or irregular shape.

[0015] The diameter of the first axial through-hole is 2.6-4.6 mm, such as 2.6 mm, 2.8 mm, 3.0 mm, 3.2 mm, 3.4 mm, 3.6 mm, 3.8 mm, 4.0 mm, 4.2 mm, 4.4 mm or 4.6 mm, but is not limited to the values ​​listed above. Other unlisted values ​​within the above range are also applicable.

[0016] Preferably, the second axial through-hole includes a near-mouth channel and a far-mouth channel, wherein the near-mouth channel is connected to the conventional filter element section.

[0017] Preferably, the diameter of the near-orifice is 1.3-2.3 mm, such as 1.3 mm, 1.4 mm, 1.5 mm, 1.6 mm, 1.7 mm, 1.8 mm, 1.9 mm, 2.0 mm, 2.1 mm, 2.2 mm or 2.3 mm, but is not limited to the values ​​listed above. Other unlisted values ​​within the above range are also applicable.

[0018] Preferably, the diameter of the distal orifice is 2.6-4.6 mm, such as 2.6 mm, 2.8 mm, 3.0 mm, 3.2 mm, 3.4 mm, 3.6 mm, 3.8 mm, 4.0 mm, 4.2 mm, 4.4 mm or 4.6 mm, but is not limited to the values ​​listed above. Other unlisted values ​​within the above range are also applicable.

[0019] Preferably, the aperture ratio of the near-mouth channel to the far-mouth channel is 1:(1.7-2.3).

[0020] Preferably, the length ratio of the near-mouth channel to the far-mouth channel is (4-6):(6-4), such as 4:6, 4.5:5.5, 5:5, 5.5:4.5 or 6:4, but not limited to the values ​​listed above. Other unlisted values ​​within the above range are also applicable.

[0021] The aforementioned specific structural and parameter limitations can further improve the technical performance of composite filters.

[0022] Preferably, the cross-sectional shapes of the near-mouth channel and the far-mouth channel independently include circles, triangles, quadrilaterals, pentagons, hexagons, pentagonal stars, or irregular shapes.

[0023] Preferably, the length ratio of the conventional filter element section to the injection-molded filter rod support section is (1-2):(2-3).

[0024] When the above-mentioned filter tip is used to evaluate the effect of tobacco leaf modules, different flavorings and fragrances can be applied to achieve different aroma and flavor characteristics for the evaluation of the effect of tobacco leaf modules; or to add fragrance to cigarettes and improve the sensory quality of cigarettes.

[0025] Compared with the prior art, the present invention has the following beneficial effects:

[0026] This invention provides a composite filter tip that combines a conventional filter element section and an injection-molded filter rod support section, and utilizes a through-channel to reduce suction resistance, increase smoke volume, and lower the smoke inlet temperature, providing different smoke style characteristics and suitable for evaluating the effects of different tobacco modules. Attached Figure Description

[0027] Figure 1 These are schematic diagrams of the axial cross-sectional structure of the composite filter provided in Examples 1, 2, 4, and 5;

[0028] Figure 2 This is a schematic diagram of the axial cross-sectional structure of the composite filter provided in Example 3;

[0029] Figure 3 This is a schematic cross-sectional view of the composite filter nozzle injection molding filter rod support section provided in Example 3;

[0030] Figure 4 This is a schematic diagram of the axial cross-sectional structure of the composite filter provided in Example 6;

[0031] Figure 5 This is a schematic diagram of the axial cross-sectional structure of the composite filter provided in Comparative Example 1;

[0032] In the diagram, 1-conventional filter element section, 2-injection molded filter rod support section, 21-near-mouth channel, 22-far-mouth channel. Detailed Implementation

[0033] The technical solution of this utility model will be further described below through specific embodiments. Those skilled in the art should understand that the embodiments described are merely illustrative of this utility model and should not be considered as specific limitations thereof.

[0034] Example 1

[0035] This embodiment provides a composite filter tip, comprising a conventional filter element segment (cellulose acetate filter element), an injection-molded filter rod support segment (directly injection molded from polyethylene), and a splicing paper wrapping the two, connected in sequence, as shown in the figure. Figure 1 As shown (where 1 is the conventional filter element section, 2 is the injection-molded filter rod support section, 21 is the near-outlet channel, and 22 is the far-outlet channel).

[0036] The filter element is 25mm long, including a 10mm conventional filter element section and a 15mm injection-molded filter rod support section. The injection-molded filter rod support section is equipped with a near-mouth channel and a far-mouth channel, with a length ratio of 5:5. The cross-section of the near-mouth channel and the far-mouth channel are all circular. The diameter of the filter nozzle is 5.4mm, the diameter of the near-mouth channel is 1.6mm, and the diameter of the far-mouth channel is 3.2mm.

[0037] Example 2

[0038] This embodiment provides a composite filter tip, comprising a conventional filter element segment (non-woven fabric filter element), an injection-molded filter rod support segment (directly injection molded from polyethylene), and a splicing paper wrapping the two, connected in sequence, as shown in the figure. Figure 1 As shown (where 1 is the conventional filter element section, 2 is the injection-molded filter rod support section, 21 is the near-outlet channel, and 22 is the far-outlet channel).

[0039] The filter element is 25mm long, including a 10mm conventional filter element section and a 15mm injection-molded filter rod support section. The injection-molded filter rod support section has a near-mouth channel and a far-mouth channel inside, with a length ratio of 4:6 between the near-mouth channel and the far-mouth channel. The cross-section of the near-mouth channel is square, and the cross-section of the far-mouth channel is circular. The filter nozzle diameter is 5.4mm, the side length of the near-mouth channel is 1.3mm, and the pore diameter of the far-mouth channel is 3mm.

[0040] Example 3

[0041] This embodiment provides a composite filter tip, comprising a conventional filter element segment (non-woven fabric filter element), an injection-molded filter rod support segment (directly injection molded from polyethylene), and a splicing paper wrapping the two, connected in sequence, as shown in the figure. Figure 2-3 As shown (where 1 is the conventional filter element section and 2 is the injection-molded filter rod support section).

[0042] The filter element is 25mm long, including a 10mm conventional filter element section and a 15mm injection-molded filter rod support section. The injection-molded filter rod support section has five axially penetrating channels, all of which have a pentagonal cross-section. The filter nozzle diameter is 5.4mm, and the outer diameter of the pentagonal star is 3.2mm.

[0043] Example 4

[0044] This embodiment provides a composite filter tip, comprising a conventional filter element segment (cellulose acetate filter element), an injection-molded filter rod support segment (directly injection molded from polyethylene), and a splicing paper wrapping the two, connected in sequence, as shown in the figure. Figure 1 As shown (where 1 is the conventional filter element section, 2 is the injection-molded filter rod support section, 21 is the near-outlet channel, and 22 is the far-outlet channel).

[0045] The filter element is 25mm long, consisting of a 10mm conventional filter element section and a 15mm injection-molded filter rod support section. The injection-molded filter rod support section contains a near-mouth channel and a far-mouth channel, with a length ratio of 5:5. All channels have circular cross-sections, a filter nozzle diameter of 6.3mm, a near-mouth channel diameter of 1.1mm, and a far-mouth channel diameter of 5mm.

[0046] Example 5

[0047] This embodiment provides a composite filter tip, comprising a conventional filter element segment (cellulose acetate filter element), an injection-molded filter rod support segment (directly injection molded from polyethylene), and a splicing paper wrapping the two, connected in sequence, as shown in the figure. Figure 1 As shown (where 1 is the conventional filter element section, 2 is the injection-molded filter rod support section, 21 is the near-outlet channel, and 22 is the far-outlet channel).

[0048] The filter element is 25mm long, consisting of a 10mm conventional filter element section and a 15mm injection-molded filter rod support section. The injection-molded filter rod support section contains a near-mouth channel and a far-mouth channel, with a length ratio of 5:5. All channels have a circular cross-section, a filter nozzle diameter of 5.4mm, a near-mouth channel diameter of 2.5mm, and a far-mouth channel diameter of 4.8mm.

[0049] Example 6

[0050] This embodiment provides a composite filter tip, comprising a conventional filter element segment (cellulose acetate filter element), an injection-molded filter rod support segment (directly injection molded from polyethylene), and a splicing paper wrapping the two, connected in sequence, as shown in the figure. Figure 4 As shown (where 1 is the conventional filter element section, 2 is the injection-molded filter rod support section, 21 is the near-outlet channel, and 22 is the far-outlet channel).

[0051] The filter element is 25mm long, including a 10mm conventional filter element section and a 15mm injection-molded filter rod support section. The injection-molded filter rod support section has a near-mouth channel and a far-mouth channel inside, with a length ratio of 5:5 between the near-mouth channel and the far-mouth channel. The cross-section of the near-mouth channel and the far-mouth channel are all circular. The diameter of the filter nozzle is 5.4mm, the diameter of the near-mouth channel is 3.2mm, and the diameter of the far-mouth channel is 1.6mm.

[0052] Comparative Example 1

[0053] This comparative example provides a composite filter tip, comprising a conventional filter element segment (cellulose acetate filter element), an injection-molded filter rod support segment (directly injection molded from polyethylene), and a tipping paper encasing both connected in sequence, as shown in the following structure. Figure 5 As shown (where 1 is the conventional filter element section and 2 is the injection-molded filter rod support section).

[0054] The filter element is 25mm long, including a 10mm conventional filter element section and a 15mm injection-molded filter rod support section. The injection-molded filter rod support section has an axial through-hole with a pentagonal cross-section, a filter nozzle diameter of 5.4mm, and a pentagonal star outer circle diameter of 3.2mm.

[0055] Effect test:

[0056] The above-mentioned filter tip is assembled with tobacco leaf modules containing the following components to form a cigarette:

[0057] Chuxiong C3F 14％ Honghe C4F 10％ Kunming C4F 4％ Lincang C4F 6％ Pu'er C3F 10％ Qujing C3F 6％ Zhaotong C2F 3％ Dali C3F 14％ Wenshan C3F 23％ Zhaotong C3F 11％

[0058] Then, cigarette draw resistance testing (GB / T 22838 "Determination of Physical Properties of Cigarettes and Filters" Part 5 "Cigarette Draw Resistance and Filter Pressure Drop") and sensory quality evaluation (GB 5606.4-2005 "Cigarettes Part 4: Sensory Technical Requirements") were conducted, and the results are as follows:

[0059] Example 1 550 92.0 Example 2 575 91.0 Example 3 580 90.5 Example 4 600 90.0 Example 5 610 90.0 Example 6 720 89.0 Comparative Example 1 750 88.5

[0060] The data above shows that the composite filter provided by this invention combines a conventional filter element section and an injection-molded filter rod support section, and utilizes a through-channel to reduce suction resistance, increase smoke volume, and lower the smoke inlet temperature, providing different smoke style characteristics and suitable for evaluating the effects of different tobacco modules. Comparative Examples 1-6 show that this invention, by adopting a second axial through-channel with a specific structure and controlling relevant parameters, can further improve the product's effect. Comparative Examples 1-6 and Comparative Example 1 show that this invention, through a specific structural design, can effectively reduce cigarette suction resistance and improve sensory effects compared to existing technologies, making it more conducive to evaluating the effects of tobacco modules.

[0061] The applicant declares that this utility model is illustrated through the above embodiments, but this utility model is not limited to the above embodiments, that is, it does not mean that this utility model must rely on the above embodiments to be implemented. Those skilled in the art should understand that any improvements to this utility model, equivalent substitutions of the raw materials of this utility model, additions of auxiliary components, and selection of specific methods, etc., all fall within the protection and disclosure scope of this utility model.

[0062] The preferred embodiments of the present invention have been described in detail above. However, the present invention is not limited to the specific details of the above embodiments. Within the scope of the technical concept of the present invention, various simple modifications can be made to the technical solution of the present invention, and these simple modifications all fall within the protection scope of the present invention.

[0063] It should also be noted that the various specific technical features described in the above specific embodiments can be combined in any suitable way without contradiction. In order to avoid unnecessary repetition, this utility model will not describe the various possible combinations separately.

Claims

1. A composite filter tip, characterized in that, The composite filter includes a filter element and a splicing paper that wraps the filter element; The filter element includes a conventional filter element section and an injection-molded filter rod support section connected in sequence; The injection-molded filter rod support section is provided with at least two first axial through channels or a second axial through channel formed by connecting at least two channels of different diameters.

2. The composite filter tip according to claim 1, characterized in that, The conventional filter element segment includes any one of the following: cellulose acetate filter element, paper filter element, or non-woven fabric filter element.

3. The composite filter tip according to claim 1, characterized in that, The cross-sectional shape of the first axial through-hole includes a circle, triangle, quadrilateral, pentagon, hexagon, pentagonal star, or irregular shape; The diameter of the first axial through-hole is 2.6-4.6 mm.

4. The composite filter tip according to claim 1, characterized in that, The second axial through-hole includes a near-mouth channel and a far-mouth channel, wherein the near-mouth channel is connected to the conventional filter element section.

5. The composite filter tip according to claim 4, characterized in that, The diameter of the near-orifice is 1.3-2.3 mm.

6. The composite filter tip according to claim 4, characterized in that, The diameter of the distal orifice is 2.6-4.6 mm.

7. The composite filter tip according to claim 4, characterized in that, The aperture ratio of the near-mouth channel to the far-mouth channel is 1:(1.7-2.3).

8. The composite filter tip according to claim 4, characterized in that, The length ratio of the near-mouth channel to the far-mouth channel is (4-6):(6-4).

9. The composite filter tip according to claim 4, characterized in that, The cross-sectional shapes of the near-mouth channel and the far-mouth channel independently include circles, triangles, quadrilaterals, pentagons, hexagons, pentagonal stars, or irregular shapes.

10. The composite filter tip according to claim 1, characterized in that, The length ratio of the conventional filter element section to the injection-molded filter rod support section is (1-2):(2-3).

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