A composite filter rod cigarette

Abstract

The application discloses a composite filter rod cigarette, which comprises a tobacco core section and a filter rod section; the filter rod section comprises an acetate fiber section and a polylactic acid section from a proximal end to a distal end and is wrapped by a forming paper; the polylactic acid section is curled in a sheet-shaped foamed polylactic acid; and the sheet-shaped foamed polylactic acid has a V-shaped cutting groove penetrating along an axial direction after being cut on one side and curled. The composite filter rod cigarette can not only reduce the temperature of smoke, but also greatly reduce harmful components in the smoke by using the filter rod with the specific structure.

Description

Technical Field

[0001] This invention belongs to the technical field of the tobacco industry, and specifically relates to a composite filter rod cigarette. Background Technology

[0002] As people's living standards improve, cigarettes have become an indispensable part of many people's daily lives. However, cigarette smoke contains harmful substances such as tar, carbon monoxide, nitrosamines, free radicals, volatile nitriles, and phenols. Therefore, based on the concept of health, more and more manufacturers are reducing the harmful components in the smoke to improve the quality of cigarettes.

[0003] CN117322675A discloses a cigarette tar-reducing and harm-reducing composite filter rod, its preparation method, and its application, relating to the field of tobacco filter rod technology. The cigarette tar-reducing and harm-reducing composite filter rod comprises a ternary composite structure consisting of a first cellulose acetate filter rod, a filter rod component, and a second cellulose acetate filter rod connected in sequence. The pore size of the first cellulose acetate filter rod is smaller than that of the second cellulose acetate filter rod. The filter rod component, by weight, comprises: 35-45 parts thermoplastic elastomer, 25-35 parts processing oil, 20-30 parts polypropylene, and 2-7 parts antioxidant. This invention achieves tar reduction and harm reduction through a step-by-step filtration method.

[0004] CN102349702A discloses a filter rod with significant tar reduction function, comprising a filter core (1), a coaxial diacetate cellulose tow filter rod (2) wrapped around the filter core, and a formed paper (3) wrapped around the diacetate cellulose tow filter rod. This invention achieves an organic combination of coaxial filter rod technology and paper filter rod technology, embedding non-woven filter core, paper filter core, and paper-acetate composite filter core coaxially into the filter tip, which not only ensures the effective adsorption of cigarette smoke by the filter core, but also maintains the good taste of cigarettes.

[0005] In existing technologies, most methods reduce the content of harmful components in cigarette smoke by adjusting the structure of cellulose acetate filter rods or combining them with paper filter rods. However, while cellulose acetate can effectively adsorb and intercept tar in cigarette smoke, it is not easily degraded, and paper filter rods have problems such as noticeable odor. Therefore, how to reduce the amount of cellulose acetate used without reducing the filter rod's effectiveness in filtering cigarette smoke, while meeting the requirements for reducing tar and harm in cigarette smoke, has become an urgent problem to be solved. Summary of the Invention

[0006] To address the shortcomings of existing technologies and practical needs, this invention provides a composite filter cigarette. The composite filter cigarette, through its unique structure, can reduce harmful chemical components in the smoke without affecting the user's sensory experience.

[0007] To achieve this objective, the present invention adopts the following technical solution:

[0008] In a first aspect, the present invention provides a composite filter rod cigarette, the composite filter rod cigarette comprising a core segment and a filter rod segment;

[0009] The filter rod segment, from the proximal end to the distal end, consists of a cellulose acetate segment and a polylactic acid segment, and is wrapped with molded paper.

[0010] The polylactic acid segment is formed by curling sheet-like foamed polylactic acid;

[0011] The sheet-like expanded polylactic acid, after being cut on one side and rolled up, has a V-shaped cutting groove running through the axial direction.

[0012] The composite filter rod cigarette of the present invention, through the combination of polylactic acid segment and cellulose acetate segment, reduces the amount of non-degradable cellulose acetate used on the one hand, and can better reduce tar and other harmful components in the smoke on the other hand. In particular, the polylactic acid segment, by cutting and rolling foamed polylactic acid to form a V-shaped cutting groove, can not only divide the smoke, but the pores of the cut foamed polylactic acid can also significantly increase the contact surface of the smoke, enhance the interception and adsorption of the smoke, and achieve a greater reduction in harmful chemical components in the smoke.

[0013] Preferably, the filter rod section further includes a hollow filter rod section;

[0014] Preferably, the filter rod segment comprises, from the proximal end to the distal end, a cellulose acetate segment, a polylactic acid segment, and a hollow filter rod segment, and is wrapped with molded paper.

[0015] In this invention, the hollow filter rod section is combined with the polylactic acid section. The flue gas is first mixed in the hollow cavity of the hollow filter rod, which is conducive to the diversion of the flue gas into the V-shaped cutting groove of the foamed polylactic acid and to better reduce the temperature of the flue gas, thereby improving the sensory experience of consumers.

[0016] Preferably, the thickness of the sheet-like expanded polylactic acid is 0.2-3 mm, for example, it can be 0.3 mm, 0.5 mm, 0.8 mm, 1 mm, 1.2 mm, 1.5 mm, 1.8 mm, 2 mm, 2.2 mm, 2.5 mm or 2.8 mm, etc.

[0017] Preferably, the depth of the sheet-like expanded polylactic acid cut is 0.1-2 mm, for example, it can be 0.3 mm, 0.5 mm, 0.8 mm, 1 mm, 1.1 mm, 1.3 mm, 1.5 mm, 1.7 mm or 1.9 mm.

[0018] Preferably, the thickness of the uncut sheet-like polylactic acid is ≥0.1mm, for example, it can be 0.2mm, 0.3mm, 0.4mm, 0.5mm, 0.6mm, 0.7mm, 0.8mm, 0.9mm or 1mm, etc.

[0019] Preferably, the spacing between the V-shaped cutting grooves is 1-3mm, for example, it can be 1.2mm, 1.5mm, 1.8mm, 2mm, 2.2mm, 2.5mm, 2.7mm or 2.9mm, etc.

[0020] Preferably, the surface of the V-shaped cutting groove is also coated with an adsorption coating.

[0021] Preferably, the thickness of the adsorption coating is 0.1-0.3 mm, for example, it can be 0.12 mm, 0.15 mm, 0.18 mm, 0.2 mm, 0.22 mm, 0.25 mm, 0.27 mm or 0.29 mm.

[0022] Preferably, the adsorption coating comprises any one or a combination of at least two of porous powder, tobacco extract, or polyvinylpyrrolidone.

[0023] The tobacco extract includes Peruvian extract.

[0024] The porous powder includes attapulgite powder.

[0025] Preferably, the adsorption coating is a combination of polyvinylpyrrolidone and attapulgite powder.

[0026] In this invention, polyvinylpyrrolidone in the adsorption coating acts as a binder, and the attapulgite powder can better adsorb harmful components in the flue gas and further reduce the flue gas temperature.

[0027] Preferably, the mass ratio of polyvinylpyrrolidone to attapulgite powder is 1:(2-5), for example, it can be 1:2.1, 1:2.2, 1:2.5, 1:3, 1:3.5, 1:4 or 1:4.5, etc.

[0028] Preferably, the sheet is also covered with cotton thread.

[0029] Preferably, the cotton thread is loaded with fragrance-enhancing ingredients.

[0030] Preferably, the flavoring ingredients include any one or a combination of at least two of the following: tangerine peel flavoring, coffee flavoring, grapefruit flavoring, or peppermint flavoring.

[0031] Preferably, the flavoring ingredients include grapefruit flavoring and peppermint flavoring.

[0032] The hollow filter rod segment is a thin-walled hollow rod made of cellulose acetate.

[0033] The tobacco core segment is made of shredded tobacco leaves and / or reconstituted tobacco leaves wrapped in shaped paper.

[0034] Preferably, the core segment is made of shredded tobacco leaves and reconstituted tobacco leaves wrapped in formed paper. The leaf blend formula, consisting of shredded tobacco leaves and reconstituted tobacco leaves, is determined by cigarette formulation personnel.

[0035] Preferably, the mass ratio of the tobacco leaves to the reconstituted tobacco leaves is 1:(0-0.5), for example, it can be 1:0.1, 1:0.2, 1:0.3, 1:0.4, or 1:0.5. Preferably, the tobacco leaves include any one or a combination of at least two of the following: Yunnan tobacco leaves, Fujian tobacco leaves, Guizhou tobacco leaves, Henan tobacco leaves, Sichuan tobacco leaves, Hunan tobacco leaves, Brazilian tobacco leaves, Argentine tobacco leaves, or Zimbabwean tobacco leaves.

[0036] The tobacco leaves and reconstituted tobacco leaves contain glycerin, propylene glycol, flavorings and other additives.

[0037] Preferably, the outer diameter of the composite filter rod cigarette is 5-8mm and the length is 40-100mm. For example, the outer diameter can be 5.1mm, 5.5mm, 6mm, 6.5mm, 7mm, 7.5mm or 7.8mm, and the length can be 45mm, 50mm, 55mm, 60mm, 65mm, 70mm, 75mm, 80mm, 85mm, 90mm, 95mm or 98mm, etc.

[0038] Preferably, the length of the filter rod segment is 5-40mm, for example, it can be 6mm, 8mm, 10mm, 12mm, 15mm, 18mm, 20mm, 22mm, 25mm, 28mm, 30mm, 32mm, 35mm or 38mm, etc.

[0039] All the specific point values ​​within the above range can be selected, and will not be elaborated on here.

[0040] Compared with the prior art, the present invention has the following beneficial effects:

[0041] The composite filter cigarette of the present invention, by using a filter rod with a specific structure, can not only reduce the temperature of the smoke, but also significantly reduce the harmful components in the smoke. Attached Figure Description

[0042] The above description of the present invention and the following detailed embodiments will be better understood when read in conjunction with the accompanying drawings. It should be noted that the drawings are merely examples of the claimed technical solutions.

[0043] Figure 1 This is a cross-sectional schematic diagram of the composite filter rod cigarette of Embodiment 1 of the present invention;

[0044] Figure 2 This is a cross-sectional schematic diagram of the composite filter rod cigarette of Embodiment 4 of the present invention.

[0045] The labels in the attached diagrams are explained as follows: 1. Polylactic acid segment; 2. Cigarette core segment; 3. Fiber acetate segment; 4. Hollow filter rod segment. Detailed Implementation

[0046] To further illustrate the technical means and effects of this invention, the following description, in conjunction with embodiments and accompanying drawings, provides a further explanation of the invention. It is understood that the specific embodiments described herein are merely illustrative of the invention and not intended to limit it.

[0047] The terms “comprising,” “including,” “having,” “containing,” or any other variations thereof, as used herein, are intended to cover non-exclusive inclusion. For example, a composition, step, method, article, or apparatus that includes the listed elements is not limited to those elements and may also include other elements not expressly listed or elements inherent to such composition, step, method, article, or apparatus.

[0048] "Optional" or "any one" means that the matter or event described thereafter may or may not occur, and the description includes both the possibility that the event will occur and the possibility that the event will not occur.

[0049] The indefinite articles “a” and “an” preceding an element or component of this invention do not impose any limitation on the quantity (i.e., number of times) of the element or component. Therefore, “an” or “a” should be interpreted as including one or at least one, and the singular form of an element or component also includes the plural form, unless the quantity clearly refers only to the singular form.

[0050] The terms "one embodiment," "some embodiments," "exemplary," "specific example," or "some examples," etc., used in this invention refer to specific features, structures, materials, or characteristics described in connection with that embodiment or example, which are included in at least one embodiment or example of the invention. In this document, the illustrative expressions of the above terms are not necessarily directed at the same embodiment or example.

[0051] Where specific techniques or conditions are not specified in the examples, they shall be performed in accordance with the techniques or conditions described in the literature in this field, or in accordance with the product instructions. Reagents or instruments whose manufacturers are not specified are all conventional products that can be purchased through legitimate channels.

[0052] Example 1

[0053] This embodiment provides a composite filter cigarette with an outer diameter of 6.3 mm and a length of 88 mm, comprising a core section and a filter section.

[0054] The filter rod segment, from the proximal end to the distal end, consists of a cellulose acetate segment (10 mm in length), a polylactic acid segment (15 mm in length), and a hollow filter rod segment (5 mm in length), and is wrapped with molded paper.

[0055] The polylactic acid segment is formed by cutting a 1.5mm thick and 18mm wide foamed polylactic acid sheet on one side (cutting depth of 1.2mm and cutting spacing of 1mm), rolling it with cotton thread as the axis, and wrapping and fixing it with forming paper.

[0056] The expanded polylactic acid sheet has a V-shaped cut groove running along the axial direction near the wrapping layer after being rolled up.

[0057] The surface of the V-shaped cutting groove is coated with polyvinylpyrrolidone and attapulgite powder in a mass ratio of 1:5, and the coating thickness is 0.2 mm.

[0058] The cotton thread contains a mixture of grapefruit and peppermint flavorings;

[0059] The hollow filter rod segment is a thin-walled hollow rod made of cellulose acetate.

[0060] The tobacco core segment is made of tobacco shreds and reconstituted tobacco shreds wrapped in forming paper at a mass ratio of 1:0.2. The tobacco shreds and reconstituted tobacco shreds contain glycerin, propylene glycol, flavorings, and other additives.

[0061] The tobacco leaves used are a blend of Yunnan tobacco, Henan tobacco, Guizhou tobacco, and Hunan tobacco, and the blending ratio of the blended tobacco leaves is as follows:

[0062] Yunnan tobacco leaves 30%

[0063] 10% of Henan tobacco leaves

[0064] Guizhou tobacco leaves 35%

[0065] Hunan tobacco leaves 25%

[0066] The method for preparing the composite filter rod cigarette is as follows: first, the cellulose acetate segment, polylactic acid segment and hollow filter rod segment are rolled together to form a composite filter rod, and then the composite filter rod is rolled together with the cigarette core segment to form a cigarette.

[0067] The preparation method of the polylactic acid filter rod is as follows: foamed polylactic acid is laid flat on a workbench, and longitudinal continuous cutting is performed on the polylactic acid with a blade. The cutting interval is 1 mm and the cutting depth is 1.2 mm. The uncut surface of the foamed polylactic acid is laid flat on the annular table. The cutting cracks of the foamed polylactic acid are opened by the action of the annular table to form a V-shaped cutting groove. Using cotton thread as an axis, the uncut side of the polylactic acid sheet is rolled around the cotton thread. The rolled polylactic acid sheet enters the positioning circular guide tube, and after passing through the circular guide tube, it enters the forming smoke gun. The polylactic acid sheet is wrapped with forming paper around the cut surface inside the forming smoke gun.

[0068] The cigarette core segment, hollow filter rod segment, and cellulose acetate segment are prepared using conventional methods in the art.

[0069] The composite filter cigarette is prepared by processing cellulose acetate segments, polylactic acid segments, hollow filter rod segments, and cigarette core segments using a machine.

[0070] Example 2

[0071] This embodiment provides a composite filter cigarette with an outer diameter of 6.3 mm and a length of 88 mm, comprising a core section and a filter section.

[0072] The filter rod segment, from the proximal end to the distal end, consists of a cellulose acetate segment (10 mm in length), a polylactic acid segment (15 mm in length), and a hollow filter rod segment (5 mm in length), and is wrapped with molded paper.

[0073] The polylactic acid segment is formed by cutting a foamed polylactic acid sheet with a thickness of 0.5 mm and a width of 45 mm on one side (cutting depth of 0.3 mm and cutting spacing of 3 mm), rolling it with cotton thread as the axis, and wrapping and fixing it with forming paper.

[0074] The expanded polylactic acid sheet has a V-shaped cut groove running along the axial direction near the wrapping layer after being rolled up.

[0075] The surface of the V-shaped cutting groove is coated with polyvinylpyrrolidone and attapulgite powder in a mass ratio of 1:2.

[0076] The coating thickness is 0.1 mm;

[0077] The cotton thread contains a mixture of grapefruit and peppermint flavorings;

[0078] The hollow filter rod segment is a thin-walled hollow rod made of cellulose acetate.

[0079] The composition of the tobacco shreds and reconstituted tobacco shreds in the core segment is as described in Comparative Example 1.

[0080] The preparation method of the composite filter rod cigarette is as described in Example 1.

[0081] The preparation method of the polylactic acid filter rod is as described in Example 1.

[0082] Example 3

[0083] This embodiment provides a composite filter cigarette with an outer diameter of 6.3 mm and a length of 88 mm, comprising a core section and a filter section.

[0084] The filter rod segment, from the proximal end to the distal end, consists of a cellulose acetate segment (10 mm in length), a polylactic acid segment (15 mm in length), and a hollow filter rod segment (5 mm in length), and is wrapped with molded paper.

[0085] The polylactic acid segment is formed by cutting a 3mm thick and 9mm wide foamed polylactic acid sheet on one side (cutting depth of 2mm and cutting spacing of 1mm), then rolling it with cotton thread as the axis and wrapping and fixing it with forming paper.

[0086] The expanded polylactic acid sheet has a V-shaped cut groove running along the axial direction near the wrapping layer after being rolled up.

[0087] The surface of the V-shaped cutting groove is coated with polyvinylpyrrolidone and attapulgite powder in a mass ratio of 1:3, and the coating thickness is 0.1 mm.

[0088] The cotton thread contains a mixture of grapefruit and peppermint flavorings;

[0089] The hollow filter rod segment is a thin-walled hollow rod made of cellulose acetate.

[0090] The composition of the tobacco shreds and reconstituted tobacco shreds in the core segment is as described in Comparative Example 1.

[0091] The preparation method of the composite filter rod cigarette is as described in Example 1.

[0092] The preparation method of the polylactic acid filter rod is as described in Example 1.

[0093] Example 4

[0094] This embodiment provides a composite filter rod cigarette. The only difference between the composite filter rod cigarette and Embodiment 1 is that the filter rod segment does not include a hollow filter rod segment. The reduced length is allocated to the polylactic acid segment. The remaining composition, structure, and dimensions are the same as in Embodiment 1. The preparation method is the same as in Embodiment 1.

[0095] Example 5

[0096] This embodiment provides a composite filter rod cigarette. The only difference between the composite filter rod cigarette and the one in Embodiment 1 is that the surface of the V-shaped cutting groove in the polylactic acid segment is not coated with an adsorption coating. The rest of the composition, structure and size are the same as those in Embodiment 1, and the preparation method is the same as that in Embodiment 1.

[0097] Example 6

[0098] This embodiment provides a composite filter cigarette. The only difference between the composite filter cigarette and the one in Embodiment 1 is that the polylactic acid segment does not contain cotton thread loaded with flavoring components. The remaining composition, structure, and dimensions are the same as those in Embodiment 1, and the preparation method is the same as that in Embodiment 1.

[0099] Comparative Example 1

[0100] This comparative example provides a composite filter cigarette, which differs from Example 1 only in the polylactic acid segment. The polylactic acid segment is formed by rolling a 1.5mm thick, 15mm wide foamed polylactic acid sheet around a cotton thread axis.

[0101] The cotton thread contains a mixture of grapefruit and peppermint flavorings;

[0102] The preparation method of the polylactic acid segment is as follows: foamed polylactic acid is laid flat on the worktable, and the polylactic acid sheet is wound around the cotton thread as the axis. The wound polylactic acid sheet enters the positioning circular guide tube, passes through the circular guide tube and enters the forming smoke gun. The polylactic acid sheet is wrapped with forming paper inside the forming smoke gun.

[0103] The remaining composition, structure, and dimensions are the same as in Example 1, and the preparation method is the same as in Example 1.

[0104] Comparative Example 2

[0105] This comparative example provides a composite filter cigarette. The only difference between the composite filter cigarette and Example 5 is that the filter rod segment does not include the cellulose acetate segment, and its reduced length is allocated to the polylactic acid segment. The remaining composition, structure, and dimensions are the same as those of Example 5, and the preparation method is the same as that of Example 1.

[0106] Comparative Example 3

[0107] This comparative example provides a composite filter rod cigarette. The only difference between the composite filter rod cigarette and Example 1 is that the filter rod segment does not include the polylactic acid segment. The reduced length is distributed proportionally to the cellulose acetate segment and the hollow filter rod segment. The remaining composition, structure, and dimensions are the same as in Example 1, and the preparation method is the same as in Example 1.

[0108] Comparative Example 4

[0109] This comparative example provides a composite filter cigarette. The only difference between the composite filter cigarette and Example 5 is that the filter rod segment is only a polylactic acid segment, and the total length of the filter rod segment remains unchanged. The remaining composition, structure, and dimensions of the cigarette are the same as in Example 1, and the preparation method is the same as in Example 1.

[0110] Comparative Example 5

[0111] This comparative example provides a composite filter cigarette. The only difference between the composite filter cigarette and Example 1 is that the filter rod segment is only a cellulose acetate segment, and the total length of the filter rod segment remains unchanged. The remaining composition, structure, and dimensions of the cigarette are the same as those of Example 1, and the preparation method is the same as that of Example 1.

[0112] Test Example 1

[0113] The tar content and carbon monoxide content in the mainstream smoke captured by the composite filter rod cigarettes obtained in Examples 1-6 and Comparative Examples 1-5 were measured, and the draw resistance of the cigarettes was tested.

[0114] Test method:

[0115] The tar content was determined according to GB / T 19609-2004, "Total particulate matter and tar for conventional analysis of cigarettes using a smoking machine".

[0116] The CO content was determined according to GB / T 23356-2009, Determination of Carbon Monoxide in Gas Phase of Cigarette Smoke - Non-scattering Infrared Method.

[0117] The draw resistance test was conducted in accordance with GB / T 22838.5-2009 Determination of Physical Properties of Cigarettes and Filters Part 5: Cigarette Draw Resistance and Filter Pressure Drop.

[0118] The results are shown in Table 1 below.

[0119] Table 1

[0120]

[0121]

[0122] As can be seen from the data in Table 1, the composite filter rods prepared in Examples 1-3 of the present invention have lower cigarette draw resistance and lower content of harmful chemical components in the generated smoke.

[0123] As can be seen from Example 4, when a hollow filter rod is added to the filter rod section, it is more conducive to the diversion of flue gas and the effect of reducing harmful components in the flue gas is better.

[0124] As can be seen from Example 5, coating the surface of the V-shaped cutting groove of the polylactic acid segment with an adsorption coating can affect the content of harmful chemical components in the smoke of the final cigarette.

[0125] As can be seen from Comparative Example 1, when the polylactic acid segment is not cut to form a V-shaped cutting groove, the draw resistance of the cigarette is too high and cannot meet the application standards.

[0126] As can be seen from Comparative Examples 2-5, only when the cellulose acetate segment and the polylactic acid segment work together can the reduction effect of harmful components in flue gas be better.

[0127] Test Example 2

[0128] The cigarettes obtained in Examples 1-5 and Comparative Examples 2-5 were inserted into heated cigarette devices, heated and inhaled, and the smoke temperature was tested.

[0129] The smoke temperature test adopts the thermocouple temperature measurement method. The cigarette smoking model is simulated according to 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 cigarette filter outlet during smoking.

[0130] The test results are shown in Table 2.

[0131] Table 2

[0132] sample Maximum temperature (°C) Example 1 43.1 Example 2 45.2 Example 3 44.3 Example 4 48.9 Example 5 47.7 Comparative Example 2 50.1 Comparative Example 3 63.8 Comparative Example 4 52.3 Comparative Example 5 65.7

[0133] According to the data in Table 2, the composite filter rods in Embodiments 1-3 of the present invention have a more suitable inlet temperature for cigarette smoke, thus providing consumers with a better experience.

[0134] As can be seen from Example 4, when a hollow filter rod is added to the filter rod section, the filter rod is more effective in reducing the temperature of the flue gas.

[0135] As can be seen from Example 5, when the surface of the V-shaped cutting groove of polylactic acid segment is coated with polyvinylpyrrolidone and attapulgite powder, it is more conducive to reducing the flue gas temperature.

[0136] As can be seen from the comparison of Comparative Examples 2-4, only the cellulose acetate segment, polylactic acid segment, and hollow filter rod segment working together can better reduce the flue gas temperature and improve the consumer experience.

[0137] Test Example 3 Sensory Quality

[0138] Sensory quality tests were conducted on the composite filter cigarettes obtained in Examples 1-3, 6 and Comparative Example 5.

[0139] Test method: Refer to national standard GB 5606.4-2005 Cigarettes Part 4: Sensory technical requirements.

[0140] Testing criteria: Aroma scores range from 1 to 30 points, harmony scores range from 1 to 10 points, off-flavor scores range from 1 to 15 points, irritation scores range from 1 to 20 points, aftertaste scores range from 1 to 25 points, and the total score is 100 points.

[0141] The results are shown in Table 3.

[0142] Table 3

[0143]

[0144] As can be seen from Table 3, the composite filter cigarettes obtained in Examples 1-3 of the present invention have significant improvements in aroma, off-flavors, harmony, irritation, and taste.

[0145] As can be seen from Example 6, adding flavoring ingredients to the filter rod can improve the aroma and taste of cigarettes.

[0146] The applicant declares that this invention illustrates a composite filter rod cigarette through the above embodiments, but this invention is not limited to the detailed methods described above, that is, it does not mean that this invention must rely on the detailed methods described above to be implemented. Those skilled in the art should understand that any improvements to this invention, equivalent substitutions of the raw materials of this invention, additions of auxiliary components, and selection of specific methods, etc., all fall within the protection and disclosure scope of this invention.

Claims

1. A composite filter rod cigarette, characterized in that, The composite filter rod cigarette includes a core section and a filter rod section; The filter rod segment, from the proximal end to the distal end, consists of a cellulose acetate segment, a polylactic acid segment, and a hollow filter rod segment, and is wrapped with molded paper. The polylactic acid segment is formed by curling sheet-like foamed polylactic acid; The sheet-like expanded polylactic acid, after being cut on one side and rolled up, has a V-shaped cutting groove running through the axial direction. The uncut sheet-like expanded polylactic acid has a thickness ≥ 0.1 mm; The surface of the V-shaped cutting groove is also coated with an adsorption coating. The adsorption coating is made of a combination of polyvinylpyrrolidone and attapulgite powder.

2. The composite filter rod cigarette according to claim 1, characterized in that, The thickness of the sheet-like expanded polylactic acid is 0.2-3 mm.

3. The composite filter rod cigarette according to claim 1, characterized in that, The depth of cutting the sheet-like expanded polylactic acid is 0.1-2 mm.

4. The composite filter rod cigarette according to claim 1, characterized in that, The spacing between the V-shaped cutting grooves is 1-3mm.

5. The composite filter rod cigarette according to claim 1, characterized in that, The thickness of the adsorption coating is 0.1-0.3 mm.

6. The composite filter rod cigarette according to claim 1, characterized in that, The mass ratio of polyvinylpyrrolidone to attapulgite powder is 1:(2-5).

7. The composite filter rod cigarette according to claim 1, characterized in that, The sheet-like expanded polylactic acid is also wrapped with cotton thread.

8. The composite filter rod cigarette according to claim 7, characterized in that, The cotton thread is loaded with fragrance-enhancing ingredients.

9. The composite filter rod cigarette according to claim 1, characterized in that, The hollow filter rod segment is a thin-walled hollow rod made of cellulose acetate.

10. The composite filter rod cigarette according to claim 1, characterized in that, The tobacco core segment is made of shredded tobacco leaves and / or reconstituted tobacco leaves wrapped in shaped paper.

11. The composite filter rod cigarette according to claim 10, characterized in that, The tobacco core segment is made of shaped paper wrapped around tobacco shreds and reconstituted tobacco shreds.

12. The composite filter rod cigarette according to claim 1, characterized in that, The composite filter rod cigarette has an outer diameter of 5-8mm and a length of 40-100mm.

13. The composite filter rod cigarette according to claim 1, characterized in that, The length of the filter rod section is 10-40mm.

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