Two-section type filter stick and product and application thereof

Abstract

The invention provides a two-section type filter stick and a product and application thereof, the filter stick comprises a filter element and packaging paper wrapping the filter element, and the filter element comprises two sections of filter elements which are sequentially arranged in the axial direction; an annular breakpoint line is arranged on the packaging paper corresponding to the joint of the two sections of filter elements; the filter element is made of cellulose acetate fibers and bamboo fibers. The filter stick provided by the invention can be broken off along the annular breakpoint line according to own preferences of consumers so as to adjust the length of the filter stick, so that the same cigarette can provide cigarettes with different smoke amounts and different sensory experiences, the smoking experience of the cigarette is enriched, and the interestingness of the cigarette is increased.

Description

Technical Field

[0001] The invention belongs to the technical field of cigarette filter materials, and in particular relates to a two-section filter rod and a product and application thereof. Background Art

[0002] Filter rods are an important part of cigarettes. Their basic function is to filter smoke and improve the quality of smoking. Therefore, their quality directly affects the taste and health and safety of cigarettes. High-quality filter rods should be able to effectively reduce harmful substances in cigarettes without affecting the taste of cigarettes. Therefore, as consumers have higher and higher requirements for cigarette quality, the research and development and innovation of filter rods have also become the focus of attention of various manufacturers.

[0003] CN118575984A discloses a filter rod material, which is a cage-type porous rod, comprising a wall material, and the wall material has a hollow structure formed by interlacing and interweaving fiber materials. The filter rod material also includes a hollow channel that is consistent with or parallel to the central axis of the wall material. The fiber material extends in three-dimensional space, and a number of pore channels are formed between different fibers. The fiber material is quasi-wavy, and at least one fiber material extends in a spiral shape along the axis. The invention also discloses a method for preparing the filter rod material. The filter rod material of the invention has the characteristics of novel structure, low absorption resistance, many pores, low smoke adsorption, good cooling effect, etc., and has a simple preparation process, high production efficiency, low cost, stable product structure quality, and is very easy to industrialize.

[0004] CN118235883A discloses a three-component composite air hole hollow filter rod and cigarette, the filter rod comprises a body, the body comprises a first filter segment, a middle interception segment and a second filter segment arranged in sequence along the axial direction, the outer peripheral surfaces of the first filter segment, the middle interception segment and the second filter segment are all wrapped with forming paper, the first filter segment is close to the tobacco segment, a hollow flow channel is arranged axially inside the first filter segment, a buffer cavity is provided inside the middle interception segment, and air holes for connecting the buffer cavity are arranged at both ends of the middle interception segment along the axial direction. The invention takes into account the suction resistance and smoke interception of the filter rod, ensures the experience of smokers, and is beneficial to health.

[0005] However, although the above-mentioned cigarette filter rod has the effect of enhancing consumers' sensory experience, the filter rod is generally fixed in length and function. Users cannot adjust the taste, smoke volume, etc. of the cigarette filter rod according to personal preferences during use, and can only have a fixed smoking experience, which makes the user's smoking process less interesting and playable, affecting the user's experience. Summary of the invention

[0006] In view of the deficiencies in the prior art, the object of the present invention is to provide a two-stage filter rod and its product and application.

[0007] In order to achieve the purpose of the invention, the present invention adopts the following technical solutions:

[0008] In a first aspect, the present invention provides a two-stage filter rod, the filter rod comprising a filter element and a wrapping paper wrapped around the filter element, the filter element being a two-stage filter element sequentially arranged along the axial direction;

[0009] A circular breakpoint line is provided on the packaging paper corresponding to the connection between the two filter elements;

[0010] The filter element is made of acetate fiber and bamboo fiber.

[0011] The filter rod provided by the present invention can be broken along the annular breakpoint line according to the consumer's own preferences, so as to adjust the length of the filter rod, thereby realizing cigarettes with different smoke volumes and different sensory experiences of the same type of cigarette, which not only enriches the smoking experience of cigarettes, but also increases the fun of cigarettes. In particular, the present application sets the material of the filter element to acetate fiber and bamboo fiber. Since bamboo fiber has a better heat absorption effect, through the above-mentioned specific setting, the inlet temperature of the smoke will not increase after the length of the filter rod is shortened.

[0012] Preferably, the filter rod has a length of 35-45 mm (for example, 36 mm, 37 mm, 38 mm, 39 mm, 40 mm, 41 mm, 42 mm, 43 mm or 44 mm, etc.) and a diameter of 5-6 mm (for example, 5.1 mm, 5.2 mm, 5.3 mm, 5.4 mm, 5.5 mm, 5.6 mm, 5.7 mm, 5.8 mm or 5.9 mm, etc.).

[0013] Preferably, the length of the proximal filter element is 8-12 mm, for example, it can be 8.5 mm, 9 mm, 9.5 mm, 10 mm, 10.5 mm, 11 mm or 11.5 mm.

[0014] In the present invention, by setting the lengths of the filter element at the distal end and the proximal end, the smoke inlet temperature can still be suitable after the filter rod is broken and shortened.

[0015] Preferably, the mass ratio of acetate fiber to bamboo fiber in the near-port filter element is 1:(1-2), for example, it can be 1:1, 1:1.2, 1:1.4, 1:1.6, 1:1.8 or 1:2, etc.

[0016] Preferably, the mass ratio of acetate fiber to bamboo fiber in the distal end filter element is 1:(0.5-1), for example, it can be 1:0.6, 1:0.7, 1:0.8, 1:0.9 or 1:1, etc.

[0017] In the present invention, although bamboo fiber can better reduce the inlet temperature of smoke, adding bamboo fiber can increase the hardness of the filter element, making the filter rod easier to break, and the adsorption effect of bamboo fiber is poor and has an odor. Therefore, limiting the proportion of bamboo fiber at the near-end and far-end filter elements can make the filter rod not only have a better cooling effect, but also will not affect the inlet sensory effect of smoke.

[0018] The filter element at the distal end also contains tobacco filter particles and / or tobacco flavoring.

[0019] The filter element at the distal end also contains filter particles for cigarettes.

[0020] Preferably, the raw materials for preparing the tobacco filter particles include mint, polygonatum, kudzu root, vermiculite, kaolinite and montmorillonite.

[0021] The cigarette filter particles of the present invention use mint, polygonatum, kudzu root, vermiculite, kaolinite and montmorillonite as raw materials, wherein vermiculite, kaolinite and montmorillonite can well reduce the tar content in the smoke, and the aroma brought by mint and sophora japonica can well neutralize the odor in the bamboo fiber, thereby making the sensory effect of the smoke better.

[0022] Preferably, the method for preparing the cigarette filter particles comprises:

[0023] (1) Pre-crushing: firstly, peppermint, polygonatum sibiricum and kudzu root in a mass ratio of (0.1-1):(0.1-1):(1-2) are dried to a moisture content of 5-10%, then crushed, and passed through a 50-70 mesh sieve to obtain plant particles;

[0024] (2) solid phase mechanical treatment: the plant particles and inorganic fillers described in step (1) are ball milled in a ball mill at a mass ratio of 1:(2-5) for 1-2 h, the speed of the ball mill is controlled to be 300-400 rpm, and the ball milled material is dried to a moisture content of 1-3% to obtain mixed particles;

[0025] The inorganic filler is vermiculite, montmorillonite and kaolinite in a mass ratio of (1-2):(3-5):(2-5);

[0026] (3) Ultrafine treatment: The mixed particles are ultrafinely treated using a jet mill, and ultrafine particles are obtained after passing through a 200-400 mesh sieve;

[0027] (4) Porosification treatment: The ultrafine particles are mixed with a 10-25% polyethylene glycol aqueous solution (solid-liquid ratio of 0.05-0.15 g / mL) at 70-90°C for 1-2 h, filtered, and freeze-dried at -10 to 0°C for 20-40 min to obtain ultrafine porous particles;

[0028] (5) Acidification modification: The ultrafine porous particles are subjected to an acidification reaction with terephthalic acid having a concentration of 0.05-0.15 mol / L at 40-60° C. for 2-4 h to obtain acidified ultrafine porous particles;

[0029] (6) The acid-modified ultrafine porous particles are mixed with an aqueous solution of iron ions having a concentration of 0.5-2.5 mol / L (solid-liquid ratio of 0.1-0.2 g / mL) in a polytetrafluoroethylene reactor, and then reacted at 90-120° C. for 6-9 hours. After cooling, the particles are taken out and centrifuged at 4000-6000 rpm for 5-15 minutes. The particles are then washed alternately with DMF and anhydrous ethanol for 1-3 times each, and finally activated in an oven at 100-120° C. for 8-12 hours to obtain porous particles with tar reduction and harm reduction effects.

[0030] Preferably, the surface of the wrapping paper corresponding to the near-end filter element is coated with a sweet layer A, and the surface of the wrapping paper corresponding to the far-end filter element is coated with a perceptible sweet layer B.

[0031] Preferably, the thickness of the sweet layer A or the perceived sweet layer B is independently 0.1-0.5 mm, for example, 0.15 mm, 0.2 mm, 0.25 mm, 0.3 mm, 0.35 mm, 0.4 mm or 0.45 mm, etc.

[0032] The raw materials for preparing the sweet layer A include any one of allyl caproate, anisyl acetate or orange extract, or a combination of at least two of them; the raw materials for preparing the perceptible sweet layer B include any one of sucralose, sodium saccharin, neotame or steviol glycoside, or a combination of at least two of them.

[0033] Preferably, the raw materials for preparing the sweet layer A are allyl hexanoate and anisyl acetate;

[0034] Preferably, the raw materials for preparing the sweet layer B are sucralose, sodium saccharin and steviol glycoside.

[0035] In the present invention, by arranging a flavor layer outside the wrapping paper, the taste of the cigarette can be further improved, and by arranging different flavor layers at the proximal end and the distal end, consumers can have different smoking experiences.

[0036] Preferably, the raw materials for preparing the sweet layer A are allyl hexanoate and anisyl acetate.

[0037] The allyl hexanoate has a slight stimulation, oily aroma, and fruity aroma, similar to pineapple and rum, and a little bit like apple, but has more natural aroma like pineapple; the aniseed acetate has the aroma of berries and lilacs, and has a mild fruity aroma and floral aroma. The combination of the two can make the cigarette have a sweet fruity aroma, and can be better used to cover up the foreign smell brought by bamboo fiber.

[0038] Preferably, the two filter element sections are connected by glue dispensing.

[0039] Any specific point value within the above numerical range can be selected, and will not be described in detail here.

[0040] In a second aspect, the present invention provides a use of the two-section filter rod as described in the first aspect in preparing cigarettes.

[0041] In a third aspect, the present invention provides a cigarette, comprising a tobacco segment and the two-segment filter rod according to the first aspect.

[0042] Compared with the prior art, the present invention has the following beneficial effects:

[0043] (1) The filter rod provided by the present invention can be broken along the annular breakpoint line according to the consumer's own preferences so as to adjust the length of the filter rod, thereby achieving a cigarette with different smoke volumes and different sensory experiences of the same type of cigarette, which not only enriches the smoking experience of the cigarette, but also increases the fun of the cigarette.

[0044] (2) The present application specifies that the material of the near-end filter element is acetate fiber and the material of the far-end filter element is bamboo fiber. Since bamboo fiber has a better heat absorption effect, the above-mentioned specific setting can shorten the length of the filter rod without increasing the inlet temperature of the flue gas. BRIEF DESCRIPTION OF THE DRAWINGS

[0045] Figure 1 This is an overall schematic diagram of the filter rod of the present invention after being used in cigarettes;

[0046] Figure 2 It is a schematic diagram of the filter rod of the present invention after being broken. DETAILED DESCRIPTION

[0047] The technical solution of the present invention is further described below by specific implementation methods. It should be understood by those skilled in the art that the embodiments are only to help understand the present invention and should not be regarded as specific limitations of the present invention.

[0048] The preparation method of the cigarette filter particles used in the embodiments of the present invention is as follows:

[0049] (1) First, 100 g of mint, polygonatum sibiricum and kudzu root in a mass ratio of 1:1:1.5 were dried to a moisture content of 9%, then crushed, and passed through a 50-mesh sieve to obtain plant particles;

[0050] (2) solid phase mechanical treatment: the plant particles described in step (1) and 300 g of inorganic filler (vermiculite, montmorillonite and kaolinite in a mass ratio of 1:2:2) were ball milled in a ball mill for 1 h, the speed of the ball mill was controlled to 300 rpm, and the milled material was dried to a moisture content of 2% to obtain mixed particles;

[0051] (3) Ultrafine treatment: The mixed particles are ultrafinely treated using a jet mill, and ultrafine particles are obtained after passing through a 200-mesh sieve;

[0052] (4) Porosification treatment: The ultrafine particles were mixed with a 15% polyethylene glycol aqueous solution (solid-liquid ratio of 0.12 g / mL) at 80°C for 2 h, filtered, and freeze-dried at -5°C for 40 min to obtain ultrafine porous particles;

[0053] (5) Acidification modification: The ultrafine porous particles are subjected to an acidification reaction with 0.1 mol / L terephthalic acid at 40° C. for 4 h to obtain acid-modified ultrafine porous particles;

[0054] (6) The acid-modified ultrafine porous particles were mixed with an aqueous solution of iron ions having a concentration of 1.5 mol / L (solid-liquid ratio of 0.2 g / mL) in a polytetrafluoroethylene reactor, and then reacted at 110°C for 7 h. After cooling, the particles were taken out and centrifuged at 5000 rpm for 10 min. The particles were then washed alternately with DMF and anhydrous ethanol twice each, and finally activated in an oven at 100°C for 12 h to obtain cigarette filter particles.

[0055] Other raw materials used can be used as long as they are purchased from regular dealers.

[0056] Example 1

[0057] This embodiment provides a two-stage filter rod, the filter rod comprising a filter element and a wrapping paper wrapped around the filter element, the filter rod having a length of 38 mm and a diameter of 5.5 mm;

[0058] The filter element is a two-stage filter element arranged in sequence along the axial direction and connected by glue dispensing; the material of the near-end filter element of the two-stage filter element is acetate fiber and bamboo fiber with a mass ratio of 1:1.5, and the material of the far-end filter element is acetate fiber and bamboo fiber with a mass ratio of 5:3; the length of the near-end filter element is 10 mm;

[0059] The filter element at the distal end contains filter particles for cigarettes;

[0060] The wrapping paper corresponding to the connection between the two filter elements is provided with an annular breakpoint line; wherein the wrapping paper surface corresponding to the filter element at the near-mouth end is coated with a sweet layer A (allyl hexanoate and anisyl acetate) with a thickness of 0.3 mm;

[0061] The surface of the wrapping paper corresponding to the filter element at the distal end is coated with a 0.3 mm thick sweet layer B (sucralose, sodium saccharin and steviol glycoside).

[0062] When the filter stick provided in this embodiment is used for cigarettes, when the consumer needs a thicker smoke sensation, the filter stick can be broken along the annular breakpoint line. For example, when a different sweet and fragrant sensation is needed during the smoking process, the filter stick can be broken at an appropriate time, thereby improving the fun and practicality of the filter stick.

[0063] Example 2

[0064] This embodiment provides a two-stage filter rod, the filter rod comprising a filter element and a wrapping paper wrapped around the filter element, the filter rod having a length of 45 mm and a diameter of 6 mm;

[0065] The filter element is a two-stage filter element arranged in sequence along the axial direction and connected by glue dispensing; the material of the filter element at the near end of the two-stage filter element is acetate fiber and bamboo fiber with a mass ratio of 1:2, and the material of the filter element at the far end is acetate fiber and bamboo fiber with a mass ratio of 1:1; the length of the filter element at the near end is 12 mm;

[0066] The filter element at the distal end contains filter particles for cigarettes;

[0067] An annular breakpoint line is provided on the wrapping paper corresponding to the connection between the two filter elements; the wrapping paper surface corresponding to the filter element at the proximal end is coated with a sweet layer A (allyl hexanoate and anisyl acetate) with a thickness of 0.2 mm; the wrapping paper surface corresponding to the filter element at the distal end is coated with a perceptible sweet layer B (sucralose, sodium saccharin and steviol glycoside) with a thickness of 0.2 mm.

[0068] When the filter stick provided in this embodiment is used for cigarettes, when the consumer needs a thicker smoke sensation, the filter stick can be broken along the annular breakpoint line. For example, when a different sweet and fragrant sensation is needed during the smoking process, the filter stick can be broken at an appropriate time, thereby improving the fun and practicality of the filter stick.

[0069] Example 3

[0070] This embodiment provides a two-stage filter stick, the filter stick comprising a filter element and a wrapping paper wrapped around the filter element, the filter stick having a length of 35 mm and a diameter of 5 mm;

[0071] The filter element is a two-stage filter element arranged in sequence along the axial direction and connected by glue dispensing; the material of the filter element at the near end of the two-stage filter element is acetate fiber and bamboo fiber with a mass ratio of 1:1.2, and the material of the filter element at the far end is acetate fiber and bamboo fiber with a mass ratio of 2:1; the length of the filter element at the near end is 8mm;

[0072] The filter element at the distal end contains filter particles for cigarettes;

[0073] The wrapping paper corresponding to the connection between the two filter elements is provided with an annular breakpoint line; wherein the wrapping paper surface corresponding to the filter element at the near-mouth end is coated with a sweet layer A (allyl hexanoate and anisyl acetate) with a thickness of 0.5 mm;

[0074] The surface of the wrapping paper corresponding to the filter element at the distal end is coated with a 0.5 mm thick sweet layer B (sucralose, sodium saccharin and steviol glycoside).

[0075] When the filter stick provided in this embodiment is used for cigarettes, when the consumer needs a thicker smoke sensation, the filter stick can be broken along the annular breakpoint line. For example, when a different sweet and fragrant sensation is needed during the smoking process, the filter stick can be broken at an appropriate time, thereby improving the fun and practicality of the filter stick.

[0076] Example 4

[0077] This embodiment provides a two-stage filter rod, which differs from Embodiment 1 only in that the length of the filter element at the proximal end is 19 mm, and the rest of the structure is consistent with Embodiment 1.

[0078] Example 5

[0079] This embodiment provides a two-stage filter rod, which differs from Embodiment 1 only in that the length of the filter element at the proximal end is 5 mm, and the rest of the structure is consistent with Embodiment 1.

[0080] Example 6

[0081] This embodiment provides a two-stage filter rod, which is different from the embodiment 1 only in that no cigarette filter particles are added to the filter element at the distal end, and the rest of the structure is consistent with the embodiment 1.

[0082] Example 7

[0083] This embodiment provides a two-stage filter rod, which differs from the embodiment 1 only in that the additive in the filter element at the distal end is replaced by activated carbon instead of cigarette filter particles, and the rest of the structure is consistent with the embodiment 1.

[0084] Example 8

[0085] This embodiment provides a two-stage filter rod, which differs from Embodiment 1 only in that the filter element at the proximal end is acetate fiber and bamboo fiber in a mass ratio of 2:1, and the rest of the structure is consistent with Embodiment 1.

[0086] Example 9

[0087] This embodiment provides a two-stage filter rod, which differs from Embodiment 1 only in that the filter element at the proximal end is acetate fiber and bamboo fiber in a mass ratio of 1:3, and the rest of the structure is consistent with Embodiment 1.

[0088] Example 10

[0089] This embodiment provides a two-stage filter rod, which differs from Embodiment 1 only in that the filter element at the distal end is made of acetate fiber and bamboo fiber in a mass ratio of 1:2, and the rest of the structure is consistent with Embodiment 1.

[0090] Embodiment 11

[0091] This embodiment provides a two-stage filter rod, which differs from Embodiment 1 only in that the filter element at the distal end is made of acetate fiber and bamboo fiber in a mass ratio of 1:0.1, and the rest of the structure is consistent with Embodiment 1.

[0092] Comparative Example 1

[0093] This embodiment provides a two-stage filter rod, which differs from Embodiment 1 only in that the material of the proximal filter element and the distal filter element are both acetate fiber, and the rest of the structure is consistent with Embodiment 1.

[0094] Comparative Example 2

[0095] This embodiment provides a two-stage filter rod, which differs from Embodiment 1 only in that the materials of the proximal filter element and the distal filter element are both bamboo fiber, and the rest of the structure is consistent with Embodiment 1.

[0096] Comparative Example 3

[0097] This embodiment provides a two-stage filter rod, which differs from Embodiment 1 only in that the filter element at the proximal end is made of bamboo fiber, and the filter element at the distal end is made of acetate fiber, and the rest of the structure is consistent with Embodiment 1.

[0098] Comparative Example 4

[0099] This embodiment provides a two-stage filter rod, which differs from Embodiment 1 only in that the filter element at the distal end is made of bamboo fiber, and the filter element at the proximal end is made of acetate fiber, and the rest of the structure is consistent with Embodiment 1.

[0100] Test Example 1

[0101] The filter rods obtained in Examples 1-11 and Comparative Examples 1-4 were used with tobacco shreds to make test cigarettes, and then the inlet temperature and tar content of the mainstream smoke of the treated test cigarettes were measured. The filter rods were broken along the annular breakpoint line, and then the inlet temperature of the cigarettes was measured.

[0102] The smoke temperature test adopts the thermocouple temperature measurement method, and simulates smoking according to the cigarette smoking model specified in the national standard YC / T29-1996. The thermocouple is fixed 1 mm from the center of the cigarette filter outlet. The thermocouple is connected to the temperature data acquisition system to measure the temperature of the smoke at the outlet of the cigarette filter tip during smoking.

[0103] The tar content is determined by measuring total particulate matter and tar using a conventional analytical smoking machine for cigarettes according to GB / T 19609-2004.

[0104] The results are shown in Table 1.

[0105] Table 1

[0106] sample Maximum temperature(℃) <![CDATA[Tar (mg·cig -1 )]]> Maximum temperature after breaking (℃) Example 1 26.2 4.1 29.1 Example 2 25.8 4.3 28.9 Example 3 26.6 4.5 29.6 Example 4 25.8 4.8 27.6 Example 5 28.3 4.7 33.2 Example 6 27.3 5.6 29.2 Example 7 27.1 5.8 29.6 Example 8 28.3 5.9 30.2 Example 9 24.8 6.1 30.4 Example 10 25.2 6.2 28.4 Embodiment 11 28.5 4.9 30.1 Comparative Example 1 34.2 3.9 38.9 Comparative Example 2 24.1 6.9 26.8 Comparative Example 3 25.9 5.2 30.7 Comparative Example 4 26.1 5.3 27.8

[0107] It can be seen from the data in Table 1 that after the filter rods prepared in Examples 1-3 of the present invention are used in cigarettes, due to the use of specific sizes and specific filter element materials, the inlet temperature is relatively suitable regardless of whether the filter rod is broken, and the filter rod can effectively reduce the tar content in the smoke.

[0108] It can be seen from Examples 4-5 that when the length of the filter element near the mouth is too long, it will affect the suitability of the inlet temperature of the filter element after breaking, while when it is too short, the smoke inlet temperature is too low.

[0109] It can be seen from Examples 8-11 that only when the usage ratio of acetate fiber and bamboo fiber in the filter element is within the range specified by the present invention can the inlet temperature of the smoke be improved;

[0110] It can be seen from Comparative Example 1 that when the material of the filter element at the far end is also acetate fiber, the inlet temperature of the flue gas is too high after the filter rod is broken;

[0111] It can be seen from Comparative Example 2 that when the material of the near-port filter element is also bamboo fiber, the inlet temperature of the smoke is too low and the cost of the filter rod will increase;

[0112] It can be seen from Comparative Example 3 that when the material of the filter element at the distal end is acetate fiber and the material of the filter element at the proximal end is bamboo fiber, the inlet temperature of the flue gas is too high after the filter rod is broken.

[0113] Test Example 2 Volunteer Evaluation

[0114] The filter rods obtained in Examples 1-11 and Comparative Examples 1-4 were used to make test cigarettes with tobacco shreds. 90 smoking volunteers were randomly divided into 15 groups, each with 6 people. The smoking volunteers in each group smoked the above cigarettes and broke the filter rods along the annular breakpoint line halfway through the smoking. Then the above cigarettes were evaluated for interest, taste change, and irritation using a 10-point system: 9 points or more means very good, very satisfactory; 8-9 points are good; 7-8 points are acceptable; and 7 points or less are not good, unacceptable. The scores of each group are the average of 6 people, and the results are shown in Table 2.

[0115] Table 2

[0116]

[0117]

[0118] It can be seen from Test Example 2 that after the filter rods prepared in Examples 1-3 of the present invention are used in cigarettes, the cigarettes have better taste, not a single taste, and less irritation.

[0119] It can be seen from Example 6 that when the filter element does not add tobacco filter particles, the irritation of the smoke will increase;

[0120] It can be seen from Example 7 that when the tobacco particles are not the particles of the present invention, they cannot effectively reduce the odor of bamboo fiber and affect the taste of cigarettes;

[0121] It can be seen from Examples 8-11 that when the usage ratio of acetate fiber to bamboo fiber in the filter element is not within the range specified by the present invention, the taste of the cigarette will be affected.

[0122] The applicant declares that the present invention uses the above-mentioned embodiments to illustrate a two-stage filter rod and its products and applications, but the present invention is not limited to the above-mentioned embodiments, that is, it does not mean that the present invention must rely on the above-mentioned embodiments to be implemented. Those skilled in the art should understand that any improvement of the present invention, equivalent replacement of various raw materials of the product of the present invention, addition of auxiliary components, selection of specific methods, etc., all fall within the protection scope and disclosure scope of the present invention.

[0123] The preferred embodiments of the present invention are described in detail above. However, the present invention is not limited to the specific details in the above embodiments. Within the technical concept of the present invention, a variety of simple modifications can be made to the technical solution of the present invention, and these simple modifications all belong to the protection scope of the present invention.

[0124] It should also be noted that the various specific technical features described in the above specific embodiments can be combined in any suitable manner without contradiction. In order to avoid unnecessary repetition, the present invention will not further describe various possible combinations.

Claims

1. A two-stage filter rod, characterized in that: The filter rod comprises a filter element and a wrapping paper wrapped around the filter element, and the filter element is a two-stage filter element arranged in sequence along the axial direction; A circular breakpoint line is provided on the packaging paper corresponding to the connection between the two filter elements; The filter element is made of acetate fiber and bamboo fiber.

2. The filter rod according to claim 1, characterized in that The filter rod has a length of 35-45 mm and a diameter of 5-6 mm; Preferably, the length of the proximal filter element is 8-12 mm.

3. The filter rod according to claim 1 or 2, characterized in that: The mass ratio of acetate fiber to bamboo fiber in the near-port filter element is 1:(1-2); Preferably, the mass ratio of acetate fiber to bamboo fiber in the distal end filter element is 1:(0.5-1).

4. The filter rod according to any one of claims 1 to 3, characterized in that The filter element at the distal end also contains tobacco filter particles and / or tobacco flavorings; The filter element at the distal end also contains filter particles for cigarettes.

5. The filter rod according to claim 4, characterized in that The raw materials for preparing the cigarette filter particles include mint, polygonatum, kudzu root, vermiculite, kaolinite and montmorillonite.

6. The filter rod according to any one of claims 1 to 5, characterized in that The surface of the wrapping paper corresponding to the near-end filter element is coated with a sweet layer A, and the surface of the wrapping paper corresponding to the far-end filter element is coated with a perceptible sweet layer B; Preferably, the thickness of the sweet layer A or the perceived sweet layer B is independently 0.1-0.5 mm; The raw materials for preparing the sweet layer A include any one of allyl caproate, anisyl acetate or orange extract, or a combination of at least two of them; the raw materials for preparing the perceptible sweet layer B include any one of sucralose, sodium saccharin, neotame or steviol glycoside, or a combination of at least two of them.

7. The filter rod according to any one of claims 1 to 6, characterized in that The raw materials for preparing the sweet layer A are allyl hexanoate and anisyl acetate; Preferably, the raw materials for preparing the sweet layer B are sucralose, sodium saccharin and steviol glycoside.

8. The filter rod according to any one of claims 1 to 7, characterized in that The two filter element connections are connected by glue dispensing.

9. Use of the two-section filter rod according to any one of claims 1 to 8 in the preparation of cigarettes.

10. A cigarette, characterized in that: The cigarette comprises a tobacco segment and a two-segment filter rod according to any one of claims 1-8.

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