WO2023103170A1 - 一种烟支用滤棒及其制备方法 - Google Patents

一种烟支用滤棒及其制备方法 Download PDF

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Publication number
WO2023103170A1
WO2023103170A1 PCT/CN2022/073783 CN2022073783W WO2023103170A1 WO 2023103170 A1 WO2023103170 A1 WO 2023103170A1 CN 2022073783 W CN2022073783 W CN 2022073783W WO 2023103170 A1 WO2023103170 A1 WO 2023103170A1
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WIPO (PCT)
Prior art keywords
filter rod
filter
rod
smoke
cigarettes
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PCT/CN2022/073783
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English (en)
French (fr)
Inventor
李力群
陈晨
乔月梅
杜赫
许艳冉
纪旭东
郭春生
叶亚军
赵赛月
高磊
那宝丹
王志刚
Original Assignee
内蒙古昆明卷烟有限责任公司
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Publication of WO2023103170A1 publication Critical patent/WO2023103170A1/zh

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    • A—HUMAN NECESSITIES
    • A24—TOBACCO; CIGARS; CIGARETTES; SIMULATED SMOKING DEVICES; SMOKERS' REQUISITES
    • A24D—CIGARS; CIGARETTES; TOBACCO SMOKE FILTERS; MOUTHPIECES FOR CIGARS OR CIGARETTES; MANUFACTURE OF TOBACCO SMOKE FILTERS OR MOUTHPIECES
    • A24D3/00—Tobacco smoke filters, e.g. filter-tips, filtering inserts; Filters specially adapted for simulated smoking devices; Mouthpieces for cigars or cigarettes
    • A24D3/04—Tobacco smoke filters characterised by their shape or structure
    • A—HUMAN NECESSITIES
    • A24—TOBACCO; CIGARS; CIGARETTES; SIMULATED SMOKING DEVICES; SMOKERS' REQUISITES
    • A24D—CIGARS; CIGARETTES; TOBACCO SMOKE FILTERS; MOUTHPIECES FOR CIGARS OR CIGARETTES; MANUFACTURE OF TOBACCO SMOKE FILTERS OR MOUTHPIECES
    • A24D1/00—Cigars; Cigarettes
    • A24D1/04—Cigars; Cigarettes with mouthpieces or filter-tips
    • A24D1/045—Cigars; Cigarettes with mouthpieces or filter-tips with smoke filter means
    • A—HUMAN NECESSITIES
    • A24—TOBACCO; CIGARS; CIGARETTES; SIMULATED SMOKING DEVICES; SMOKERS' REQUISITES
    • A24D—CIGARS; CIGARETTES; TOBACCO SMOKE FILTERS; MOUTHPIECES FOR CIGARS OR CIGARETTES; MANUFACTURE OF TOBACCO SMOKE FILTERS OR MOUTHPIECES
    • A24D1/00—Cigars; Cigarettes
    • A24D1/20—Cigarettes specially adapted for simulated smoking devices
    • A—HUMAN NECESSITIES
    • A24—TOBACCO; CIGARS; CIGARETTES; SIMULATED SMOKING DEVICES; SMOKERS' REQUISITES
    • A24D—CIGARS; CIGARETTES; TOBACCO SMOKE FILTERS; MOUTHPIECES FOR CIGARS OR CIGARETTES; MANUFACTURE OF TOBACCO SMOKE FILTERS OR MOUTHPIECES
    • A24D3/00—Tobacco smoke filters, e.g. filter-tips, filtering inserts; Filters specially adapted for simulated smoking devices; Mouthpieces for cigars or cigarettes
    • A24D3/02—Manufacture of tobacco smoke filters
    • A—HUMAN NECESSITIES
    • A24—TOBACCO; CIGARS; CIGARETTES; SIMULATED SMOKING DEVICES; SMOKERS' REQUISITES
    • A24D—CIGARS; CIGARETTES; TOBACCO SMOKE FILTERS; MOUTHPIECES FOR CIGARS OR CIGARETTES; MANUFACTURE OF TOBACCO SMOKE FILTERS OR MOUTHPIECES
    • A24D3/00—Tobacco smoke filters, e.g. filter-tips, filtering inserts; Filters specially adapted for simulated smoking devices; Mouthpieces for cigars or cigarettes
    • A24D3/17—Filters specially adapted for simulated smoking devices

Definitions

  • the application relates to a filter rod for cigarettes and a preparation method thereof, belonging to the technical field of filter rods for cigarettes.
  • the heat-not-burn cigarettes on the market adopt the method of electric heating.
  • the path of the smoke circulation is too short, and the smoke reaching the cigarette holder will have a higher temperature, which is easy to burn the smoker.
  • the heat-not-burn cigarette filter rod can filter and cool the harmful parts in the smoke, and thus has been widely valued and applied.
  • the chimney In order to endow the filter rod with the function of cooling, the chimney is usually made of a material with high thermal conductivity, or the cooling particulate matter is separately placed in the flue gas flow channel to absorb heat, so as to reduce the temperature of the flue gas.
  • this structure does not It is beneficial to mechanized automatic production, with limited heat absorption and poor cooling efficiency, resulting in waste of resources.
  • the existing cooling materials are single, and commonly used PLA and PMMA cooling materials are prone to deformation during use. In order to ensure the hardness of the filter rod after adding PLA or PMMA, it is often necessary to increase the amount of cooling materials added to increase production costs. It also improves the suction resistance of the filter rod, reducing the user's sense of experience and satisfaction.
  • the present application provides a method for preparing a filter stick for cigarettes.
  • the preparation method uses tobacco dust, binders, alcohols and flavors as base materials to obtain filter stick slurry, and After the filter stick slurry is extruded, a filter stick is obtained, wherein the filter stick has a plurality of smoke channels extending along the axial direction of the filter stick, and the filter stick is used in cigarettes, and the filter stick can effectively absorb the heat in the smoke , and stimulate the effective substances in the filter rod to produce an aerogel containing aroma, which supplements the smoke and meets the purposes of cooling, increasing aroma, isolating and filtering.
  • a method for preparing a filter rod for cigarettes comprising the following steps:
  • the weight ratio of the tobacco powder, binder, alcohols and essence is (50-90):(5-15):(5-25):(0-10).
  • the smoke powder in the filter rod can be transformed into airgel containing aroma substances after absorbing heat, and achieve the purpose of increasing aroma while cooling down.
  • the structure compared with the existing cooling particles, can improve the cooling efficiency of the flue gas, quickly absorb the heat in the flue gas, and effectively use the absorbed heat.
  • the absorbed heat can make the effective substances contained in the filter stick Volatilize to produce aerogels, increase the aroma components in the smoke, supplement the smoke, and improve the smoker's experience.
  • the mixing temperature is 40-70°C
  • the mixing time is 0.5-3h
  • the extrusion molding temperature is 50-60°C.
  • the drying includes primary drying and secondary drying steps:
  • the filter rod slurry is extruded in a filter rod forming machine to obtain a wet rod, and dried at 65-85°C until the moisture content of the wet rod is 20-25%;
  • the above-mentioned one-time drying can shape the filter rod, and drying at a higher temperature can improve the drying efficiency, reduce the deformation of the filter rod, and facilitate the cutting and processing of the filter rod. If the direct drying is complete, then cutting , the cutting difficulty is greatly increased, and the secondary drying temperature is lower, which can further reduce the moisture in the filter rod, increase the hardness of the filter rod, further make the filter rod solid, and establish a good foundation for subsequent production. In addition, the use of secondary drying molding can improve the subsequent sensory quality of the filter rod. If it is formed once, the filter rod needs to be shaped at a higher temperature, which will cause subsequent sensory quality to deteriorate and reduce the heat absorption of the filter rod. Fragrance effect.
  • the alcohols are selected from one or more of ethanol, glycerin, propylene glycol, butylene glycol, hexylene glycol and pentaerythritol.
  • Preferred are propylene glycol, glycerol and 75% ethanol, wherein the weight ratio of propylene glycol, glycerol and 75% ethanol is 1:2:2.
  • the added propylene glycol, glycerin and 75% ethanol can produce airgel after the filter stick absorbs heat, and during the heating process of tobacco, the tobacco leaves will undergo a cracking reaction to form airgel smoke, and the addition of alcohols can supplement The amount of smoke released.
  • the essence is 0.5-1.5 parts, and the essence includes Cordyceps sinensis, tobacco leaf extract, cracked extract, fruity essence and mint essence.
  • the flavor used can volatilize after the composite filter rod absorbs heat, increasing the aroma in the smoke.
  • the added amount of the flavor is within this range, and it can continuously supplement the aroma during the entire process of cigarette smoke generation, so that the quality of the smoke remains consistent. Be consistent and improve the smoker's sense of use in the process of using cigarettes.
  • the binder is selected from one or more of sodium carboxymethylcellulose, guar gum and starch.
  • the adhesive mainly plays a role in shaping the filter rod, and part of the adhesive will volatilize during the subsequent shaping process, making small holes inside the filter rod, increasing the contact area between the filter rod and the flue gas, and improving the filter rod. Excellent heat exchange efficiency and heat conduction effect, and at the same time, it is convenient to absorb harmful particles in the flue gas and improve the filtering effect of the flue gas. Furthermore, during the heat absorption of the filter rod, as the aerogel volatilizes, the adhesive and moisture in the filter rod will also volatilize, thereby forming a porous structure, which further improves the cooling, flavoring and filtering of the smoke by the filter rod. Effect.
  • the weight ratio of the tobacco powder, binder, alcohol and essence is 60:11:25:5.
  • the tobacco powder is obtained by pulverizing tobacco raw materials through an ultrafine pulverizer, and the particle size of the tobacco powder is 35-60 ⁇ m, preferably 40-50 ⁇ m.
  • the particle size of the Cordyceps sinensis is 40-180 ⁇ m, preferably 70-80 ⁇ m.
  • the particle size of Cordyceps sinensis and the particle size of tobacco powder are within this range, and the specific surface area is suitable, which can increase the contact area between tobacco powder and Cordyceps sinensis and smoke, so as to absorb the heat in the smoke as soon as possible, and convert it into aroma-containing airgel , improve heat exchange and aroma efficiency.
  • the filter rod is composed of a honeycomb structure and a skin surrounding the honeycomb structure, the honeycomb structure includes a plurality of support ribs, the support ribs are air-permeable materials, and between adjacent support ribs and/or Or the smoke channel is formed between the support rib and the skin;
  • the inlet end of the filter rod is connected to the smoking core material section of the cigarette, the gas outlet end of the filter rod is connected to the near lip end of the cigarette, and the smoke enters the smoke channel along the inlet end of the filter rod And flow out from the gas outlet end of the filter rod.
  • the composite filter rod is formed by the honeycomb structure and the skin, which can make the composite filter rod have a certain hardness in the circumferential direction and strengthen the support effect of the filter rod.
  • the cooling efficiency of the composite filter rod is not lower than that of the cooling roll paper in the prior art , but compared with the cooling roll paper, the composite filter rod has a lower suction resistance, and can also produce aerogels containing aroma, which jointly realize the functions of filtration, cooling and aroma enhancement.
  • the support ribs of the honeycomb structure in the filter rod can support the filter rod, and the flue gas channel formed between the support ribs and the skin can serve the purpose of cooling and filtering at the same time, without using cooling substances alone, and the filter rod It can be formed by injection extrusion, and then cut to a desired length to facilitate mechanical processing, and the filter rod can reduce the suction resistance of the filter rod and improve the user's experience and satisfaction.
  • the filter rod can be produced automatically, and the produced filter rod is placed on the cigarette making machine, which facilitates the assembly of cigarettes, reduces the process of cigarette assembly, and improves the automation degree of cigarette production.
  • the flue gas passage includes a central passage and peripheral passages arranged circumferentially around the central passage; the central passage and the peripheral passages formed by the support ribs and the skin can increase the specific surface area of the filter rod and increase the smoke contact area with the filter rod, thereby improving the cooling and filtering effect of the filter rod; at the same time, the central channel and the peripheral channel can communicate with each other through the support ribs, which can promote the filter rod to fully absorb the heat of the flue gas and improve the filter rod's gain.
  • the fragrance effect further improves the experience of smokers.
  • the filter stick absorbs the heat of the flue gas to produce a uniform airgel, which increases the release efficiency of the effective substance in the filter stick, and the effect of flavoring is stable, and the flue gas is more likely to occur on the side walls of the central channel and the peripheral channel. After the first collision, the removal efficiency of impurities in the flue gas is high.
  • the central channel is a regular polygon, the number of sides of the polygon is the same as the number of the peripheral channels, and the peripheral channels are fan-shaped.
  • This setting method further increases the contact area between the flue gas and the filter rod, and effectively separates the flue gas path.
  • the flue gas entering the central channel can evenly diffuse into each peripheral channel in its circumferential direction, which can make the central channel and the peripheral channel contain
  • the effective substances in the smoke are fully in contact with the flue gas to exchange heat, and achieve the purpose of regenerating aroma while cooling down.
  • the side length of the sector of the peripheral channel is 0.9-1.5mm, preferably 1.2mm, and the angle of the sector is 30-120°, preferably 60-80°.
  • the thickness of the support rib is 0.4-0.6mm, and the thickness of the skin is 0.8-1.2mm.
  • the thickness of the support rib is 0.5 mm, and the thickness of the skin is 1.0 mm.
  • the thickness of the support ribs not only ensures the stable support, but also ensures the smooth circulation of the flue gas in the flue gas channel, which further promotes the volatilization of the effective substances in the filter rod and increases the release efficiency of the effective substances.
  • Thin slices, granules or shredded tobacco are placed in the core material section, so the support ribs set up can play a role of isolation, preventing the particles or shredded tobacco of the smoking core material section from flowing in the cigarette, maintaining the stability of the granules or shredded tobacco, and the skin
  • the thickness of the filter rod is thicker than the thickness of the support ribs, and the skin mainly plays the role of support and isolation.
  • the filter rod can be directly used by the smoker, so under this thickness, the smoke can communicate with the skin
  • the inner wall of the inner wall is used for heat exchange, and the flue gas temperature and the amount of flue gas on the outer wall of the epidermis are very small, ensuring that the outer temperature of the epidermis will not be too high during filtration, which is convenient for smokers to use.
  • the ratio of the cross-sectional area of the flue gas channel to the cross-sectional area of the filter rod is (0.02-0.04):1, preferably 0.025:1.
  • the flue gas channel can not only ensure the effective separation of the flue gas path, but also further increase the effective area of the central channel and the peripheral channel in contact with the flue gas, and further improve the cooling, filtering and increasing of the flue gas by the filter rod.
  • it can also isolate the particles or shredded tobacco of the smoking core material section, preventing the particles or shredded tobacco from entering the inside of the filter rod, which will lead to an increase in the resistance of the filter rod.
  • the cross-sectional area of the flue gas channel is 0.9-1.2mm 2 , preferably 1.05mm 2 .
  • the length of the filter rod is 8-12mm, and the diameter of the filter rod is 6-8mm.
  • the honeycomb structure and the skin are integrally formed.
  • Mixing the constituent materials of the filter rod can obtain the filter rod through an injection molding extrusion process, and the filter rod can also be cut to a fixed length, which is convenient for mechanized molding processing of the filter rod, and is suitable for mass production of the filter rod.
  • the thermal conductivity of the filter rod is 0.1-0.4W/(m ⁇ k), preferably 0.3W/(m ⁇ k).
  • the hardness of the filter rod is 70-94, preferably 84-94.
  • the air permeability of the filter rod is 0-1000CU, preferably 200-300CU, more preferably 260CU, and the CU refers to [cm 3 /(min ⁇ cm 2 )].
  • the tap density of the filter rod is 0.8-1.2 g/cm 3 , preferably 0.9-1 g/cm 3 .
  • a filter stick for cigarettes is provided, and the filter stick is prepared by any one of the above-mentioned preparation methods.
  • a cigarette which includes a smoking core material section, a filter tip and a filter stick prepared by any one of the preparation methods, the smoking core material section, filter stick and The filters are connected one by one.
  • the cigarettes include heat-not-burn cigarettes and traditional cigarettes; preferably, the cigarettes are heat-not-burn cigarettes, and the filter tip is the near-lip end of the heat-not-burn cigarettes. filtering effect, the filter tip can be an existing filter tip in the prior art.
  • the heat-not-burn cigarette containing the filter rod does not need to separately set the cooling section, the support section, the isolation section and the filter section, reduce the components of the heat-not-burn cigarette, and can automatically produce the heat-not-burn cigarette, so that the assembly heat-not-burn Cigarettes are more convenient and highly automated.
  • the ratio of the length of the filter rod to the length of the smoking core section is 30:45-60, preferably 30:54.
  • the filter rod can effectively cool down, filter and enhance the flavor of the smoke generated by the smoking core material section, and can make the experience of the smoker reach the best.
  • the gap between the composite filter rod and the smoking core section is 0-0.02mm, preferably 0mm.
  • the raw materials are easy to obtain, the preparation method is simple and easy to operate, and the remaining materials in the production of cigarettes can be fully utilized. , improve the recycling rate of resources and protect the ecological environment.
  • the raw materials of each component are mixed and molded at one time to obtain a filter rod with multiple smoke channels, which can increase the contact area between the filter rod and the smoke, and can effectively absorb The heat in the smoke, and use this heat to produce aerogels containing aroma, to enhance the flavor of cigarettes.
  • the prepared filter rod is directly used in cigarettes without separately setting a cooling section, an isolation section, a support section or a filtering section, and the structure of the filter rod is simplified.
  • the cooling particles can not only improve the cooling efficiency of flue gas, but also enhance the flavor and filter the flue gas, so that the filter stick has the functions of cooling, flavoring and filtering at the same time.
  • Fig. 1 is the three-dimensional schematic view of the filter rod for cigarettes involved in Example 1 of the present application;
  • Fig. 2 is a schematic side sectional view of the filter rod for cigarettes involved in Example 1 of the present application;
  • Fig. 3 is the product diagram of the filter stick for cigarettes involved in Example 1 of the present application
  • the air permeability and hardness were tested using the filter stick detection comprehensive test bench, and the thermal conductivity was tested using the thermocouple of the cigarette-adapted equipment.
  • the tap density was tested using a tap density meter.
  • the relative humidity is less than 85%, no condensation, the environment is clean and dust-free, and there are no mechanical vibration sources or electromagnetic interference sources around.
  • the filter rod 1 for cigarettes.
  • the filter rod 1 includes: a honeycomb structure and a skin 3 surrounding the honeycomb structure.
  • Rib 2 is a gas-permeable material, and a plurality of smoke channels extending axially along the filter rod 1 are formed between adjacent support ribs 2 and/or between support rib 2 and skin 3;
  • the cigarette core material sections are connected, the air outlet end of the filter rod 1 is connected with the near lip end of the cigarette, and the smoke enters the smoke channel along the inlet end of the filter rod 1 and flows out from the air outlet end of the filter rod 1 .
  • the support ribs 2 of the honeycomb structure in the filter rod 1 can support the filter rod 1, and the flue gas channel formed between the support ribs 2 and the skin 3 can simultaneously serve the purpose of cooling and filtering, without using a cooling material alone
  • the filter rod 1 can be formed by injection molding, and then cut to a desired length, which is convenient for machining, and the filter rod 1 can reduce the suction resistance of the filter rod 1, and improve the user's sense of experience and satisfaction .
  • the material of the filter rod 1 may include effective substances such as smoke powder and essence. After the smoke enters the smoke channel, the smoke collides with the side wall of the smoke channel and passes through the support ribs 2 to reach a In the adjacent flue gas channel, the hot flue gas exchanges heat with the filter rod 1. After absorbing the heat, the filter rod 1 transforms into an aroma substance aerogel to cool down and increase the flavor at the same time. It supplements the smoke of cigarettes to This makes the filter stick 1 realize the functions of filtering, cooling and flavoring at the same time, and there is no need to separately use the assembling of the cooling section, the supporting section, the insulating section and the filtering section for the cigarette.
  • effective substances such as smoke powder and essence.
  • the flue gas channel includes a central channel 4 and a peripheral channel 5 arranged circumferentially around the central channel 4 .
  • the central channel 4 and the peripheral channel 5 formed by the support rib 2 and the skin 3 can increase the specific surface area of the filter rod 1, increase the contact area between the smoke and the filter rod 1, thereby improving the cooling and filtering effect of the filter rod 1;
  • the central channel 4 and the peripheral channel 5 can communicate with each other through the support ribs 2, which can promote the filter rod 1 to fully absorb the heat of the flue gas, improve the flavoring effect of the filter rod 1, and further improve the user's experience.
  • peripheral passages 5 there is one central passage 4, 4-8 peripheral passages 5, the peripheral passages 5 are evenly arranged in the circumferential direction of the central passage 4, most of the smoke goes to the central passage 4 first, and the central passage 4 After the side wall of the filter rod collides, it passes through the support rib 2 and enters the peripheral channel 5.
  • This setting can ensure that the smoke can diffuse evenly along the center of the filter rod 1 to the circumferential direction, improve the cooling efficiency of the smoke gas, and at the same time promote the filter rod 1
  • a uniform airgel is produced, which increases the release efficiency of the effective substance in the filter rod 1, and the effect of flavoring is stable, and after the flue gas collides with the side walls of the central channel 4 and the peripheral channel 5 for many times, the smoke
  • the removal efficiency of impurities in the gas is high.
  • the central channel 4 is a regular polygon, the number of sides of the polygon is the same as the number of peripheral channels 5, and the peripheral channels 5 are fan-shaped. This arrangement further increases the contact area between the smoke and the filter rod 1, and effectively separates the smoke
  • the flue gas entering the central passage 4 can evenly diffuse into each peripheral passage 5 in its circumferential direction, so that the effective substances contained in the central passage 4 and the peripheral passage 5 can fully contact with the flue gas and perform heat exchange. While cooling down, the purpose of producing aroma again is achieved.
  • the thickness of the support rib 2 is 0.4-0.6 mm, and the thickness of the skin 3 is 0.8-1.2 mm.
  • the thickness of the support rib 2 is 0.5 mm, and the thickness of the skin 3 is 1.0 mm.
  • the thickness of the support rib 2 ensures the smooth circulation of the smoke in the smoke channel while ensuring stable support. Further promote the volatilization of the effective substances in the filter rod 1 and increase the release efficiency of the effective substances.
  • the thickness of the skin 3 is thicker than that of the support rib 2.
  • the skin 3 mainly plays the role of support and isolation.
  • the filter rod 1 can be directly used by the smoker, so under this thickness, the smoke can exchange heat with the inner wall of the skin 3, and the temperature and amount of smoke reaching the outer wall of the skin 3 are very small , to ensure that the temperature outside the skin 3 is not too high when filtering, which is convenient for smokers to use.
  • the ratio of the cross-sectional area of the central channel 4 to the cross-sectional area of the filter rod 1 is 0.02-0.04:1, preferably 0.025:1.
  • the flue gas passage can not only ensure the effective separation of the flue gas path, but also further increase the effective area of the central channel 4 and the peripheral channel 5 in contact with the flue gas, and further improve the cooling effect of the filter rod 1 on the flue gas. Filtration and flavoring effects, and at the same time, it can also isolate the particles or shredded tobacco of the smoking core material section, preventing the particles or shredded tobacco from entering the inside of the filter rod 1, thereby increasing the suction resistance of the filter rod 1.
  • the length of the filter rod 1 is 8-12mm, and the diameter of the filter rod 1 is 6-8mm.
  • the gas is fully cooled, and at the same time, the aerogel produced by the filter rod 1 absorbs heat to supplement the flavor of the smoke.
  • the honeycomb structure and the skin 3 are integrally formed, and the constituent materials of the filter rod 1 are mixed to obtain the filter rod 1 through an injection molding extrusion process, and the filter rod 1 can also be cut to a fixed length to facilitate filtering.
  • the mechanized molding process of the rod 1 is suitable for mass production of the filter rod 1 .
  • a cigarette which comprises a smoking core section, a filter tip and the filter rod 1 for cigarettes in any of the above-mentioned embodiments, wherein the smoking core section, the filter for cigarettes The rod 1 and the filter tip are connected in turn.
  • the cigarettes include heat-not-burn cigarettes and traditional cigarettes; preferably, the cigarettes are heat-not-burn cigarettes, and the filter tip is the near-lip end of the heat-not-burn cigarette, which can further improve the heat-not-burn cigarette.
  • the filter tip may be an existing filter tip in the prior art.
  • the heat-not-burn cigarette including the filter rod 1 there is no need to separately set up a cooling section, a support section, an isolation section, and a filter section, and the components of the heat-not-burn cigarette can be reduced, and the heat-not-burn cigarette can be produced automatically, so that the heat-not-burn cigarette can be assembled without heating It is more convenient to burn cigarettes, and the degree of automatic production is high.
  • the ratio of the length of the filter rod 1 to the length of the smoking core material section is 30:45-60, preferably 30:54. In this range, the filter rod 1 can effectively control the smoking core material section.
  • the generated smoke is cooled, filtered and flavored, which can make the smoker experience the best.
  • drying includes primary drying and secondary drying steps:
  • the filter rod slurry is extruded in a filter rod forming machine to obtain a wet rod, and dried at 65-85°C until the moisture content of the wet rod is 20-25%;
  • CMC is the abbreviation of sodium carboxymethyl cellulose
  • particle size of the tobacco dust used in filter sticks 1#-9# and comparison filter sticks D2#-D3# is between 40-50 ⁇ m.
  • the particle size of the smoke powder used in the comparison filter rod D1# is 50-80 ⁇ m.
  • the filter rod slurry 1# is obtained according to the ratio of each component in the filter rod 1#, and the filter rod slurry 1# is extruded and granulated , to obtain cooling particles, wherein the particle size of the cooling particles is 0.8-2.0mm, the cooling particles are put into the chimney according to the existing assembly process, and according to the filter rod 1#-9# and the comparison filter rod D1#- The same assembly process of D3# was used to obtain comparative heat-not-burn cigarette D4#.
  • the amount of smoke refers to the amount or density (fullness) of the smoke
  • the aroma refers to the pleasant aroma felt by the senses during the evaluation process
  • the harmony refers to the harmony and unity of the aroma style, and one of the monomers cannot be felt
  • Miscellaneous gas refers to the unpleasant smell contained in the smoke, such as the sweet and greasy feeling and chemical smell brought by glycerin or propylene glycol in the new concept of heat-not-burn cigarettes
  • irritation refers to the effect of smoke on the sense organs.
  • aftertaste refers to the taste sensation left over after the smoke is exhaled from the mouth and nasal cavity, including the degree of comfort , cleanliness and dryness.
  • sensory evaluation should be carried out on the standard sample (IQOS product or glo product) in order to calibrate the caliber.
  • the percentage points system is adopted for the quality score of new heat-not-burn cigarettes, and the maximum score is 100 points; each item is scored as a unit of 0.5 points; when evaluating and scoring the six indicators, if the quality of each indicator meets the requirements of the corresponding item, the corresponding points will be scored .
  • the sensory quality evaluation criteria for heat-not-burn cigarettes can refer to the following table 3.
  • the evaluation method of sensory quality was conducted by 33 professionals in the smoking evaluation group on the smoke volume, smoke temperature, aroma, harmony, irritation, miscellaneous gas and aftertaste of heat-not-burn cigarettes according to the quantification table shown in Table 3. Quantitative scoring of evaluation indicators (note: the lowest score is based on 0.5 points), and then calculate the average score of individual indicators, which are listed in Table 4. The sensory quality score is expressed as the sum of the average scores of each individual item, accurate to 0.1.
  • Table 4 The average score and total score of each evaluation index of heat-not-burn cigarettes by the evaluation group
  • the heat-not-burn cigarette 1# in this application has the highest score, which proves that the filter rod 1# can play a role in cooling and filtering while supplementing the smoke, so that the smoke of the heat-not-burn cigarette
  • the aroma is richer and the miscellaneous gas is less; while the comparative heat-not-burn cigarette D4# obtained by using the cooling particles made of the same material composition, although the composition of the cooling material is the same as that of the heat-not-burn cigarette 1#, the shape of the cooling particles is different.
  • the cooling effect and flavoring effect of the filter rod are good, but the overall sensory quality of the cooling particles becomes poor.

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Abstract

一种烟支用滤棒(1)及其制备方法，属于卷烟滤棒技术领域。制备方法包括下述步骤：将烟末、粘结剂、醇类和香精混合搅拌制得滤棒浆料，将滤棒浆料挤出成型并烘干后得到滤棒(1)，滤棒(1)具有多个沿滤棒(1)轴向延伸的烟气通道；其中，烟末、粘合剂、醇类及香精的重量比为(50-90):(5-15):(5-25):(0-10)。将滤棒(1)用于卷烟中，滤棒(1)能够有效吸收烟气中的热量，并激发滤棒(1)内的有效物质产生含有香气的气凝胶，对烟气进行补充，同时满足降温、增香、隔离和过滤的目的。

Description

一种烟支用滤棒及其制备方法
本申请要求于2021年12月09日提交中国专利局、申请号为202111499902.0、发明名称为"一种烟支用滤棒及其制备方法"的中国专利申请的优先权,其全部内容通过引用结合在本申请中。
技术领域
本申请涉及一种烟支用滤棒及其制备方法，属于卷烟用滤棒技术领域。
背景技术
目前市场上的加热不燃烧卷烟是采用电加热的方式，烟杆内部设有电池，加热不燃烧卷烟在电加热后产生的烟气从烟弹的上半部流出，进而流到烟嘴被抽烟者使用，由于从烟弹发出的烟气温度很高，烟气流通的路径太短，到达烟嘴处的烟气还会有较高的温度，容易烫伤抽烟者。加热不燃烧卷烟滤棒作为材料的一个主要组成部分，其能够对烟气中的有害部分进行过滤和降温，从而得到广泛重视及应用。
为了赋予滤棒降温的功能，通常在采用热传导率高的材料制成夹烟筒，或者在烟气流动通道内单独设置降温的颗粒物质来吸收热量，以降低烟气的温度，然而该种结构不利于机械化自动生产，吸收热量有限，降温效率差，导致资源浪费。并且现有的降温材料单一，常用的PLA和PMMA降温材料，在使用过程中易产生变形，为了保证加入PLA或PMMA后滤棒的硬度，往往需要增加降温材料的添加量，提高生产成本的同时还提高了滤棒的吸阻，降低吸食者的体验感和满足感。
发明内容
根据本申请的各种实施例，本申请提供了一种烟支用滤棒的制备方法，该制备方法利用烟末、粘结剂、醇类和香精作为基体材料得到滤棒浆料，并将滤棒浆料挤出成型后得到滤棒，其中滤棒具有多个沿所述滤棒轴向延伸的烟气通道，将该滤棒用于卷烟中，滤棒能够有效吸收烟气中的热量，并激发滤棒内的有效物质产生含有香气的气凝胶，对烟气进行补充，同时满足降温、增香、隔离和过滤的目的。
根据本申请的一个方面，提供了一种烟支用滤棒的制备方法，包括下述步骤：
将烟末、粘结剂、醇类和香精混合搅拌制得滤棒浆料，将所述滤棒浆料挤出成型并烘干后得到所述滤棒，所述滤棒具有多个沿所述滤棒轴向延伸的烟气通道；
其中，所述烟末、粘合剂、醇类及香精的重量比为(50-90)：(5-15)：(5-25)：(0-10)。
滤棒中的烟末在吸收热量后能够转化为含有香气物质的气凝胶，在降温的同时达到增香的目的，无需单独设置降温段、支撑段、隔离段或过滤段，简化滤棒的结构，相比于现有的降温颗粒，能够提高对烟气的降温效率，快速吸收烟气中的热量，并且有效的利用所吸收的热量，吸收的热量在滤棒能够使得其中含有的有效物质进行挥发产生气凝胶，增加烟气中的香气成分，对烟气进行补充，提高吸食者的体验感。
可选地，所述混合温度为40-70℃，所述混合时间为0.5-3h，所述挤出成型温度为50-60℃。
可选地，所述烘干包括一次烘干和二次烘干步骤：
一次烘干：所述滤棒浆料在滤棒成型机中挤出成型后得到湿棒，在65-85℃下烘干至湿棒的水分含量为20-25％；
二次烘干：对湿棒进行定长切割，并在20-40℃下烘干至湿棒的水分含量为8-13％，优选为10-13％，即得所述滤棒。若水分含量过低则会造成滤棒硬度大，影响滤棒后续与卷烟的卷接环节质量。
上述一次烘干，能够对滤棒进行定型，在温度较高下进行烘干，能够提高烘干效率，减小滤棒的变形，便于对滤棒的切割加工，若直接干燥完全后再进行切割，则切割难度大大提高，二次烘干温度较低，可进一步减小滤棒内的水分，提高滤棒的硬度，进一步使得滤棒固形，为后续生产建立良好的基础。另外，选用二次烘干成型，能够提高滤棒后续的感官质量，若是一次成型，则滤棒需要经过较高的温度才能定型，将会造成后续感官质量变差，降低滤棒吸热后的增香效果。
可选地，所述醇类选自乙醇、甘油、丙二醇、丁二醇、己二醇和季戊四醇中的一种或多种。优选为丙二醇、甘油和75％乙醇，其中丙二醇、甘油和75％乙醇的重 量比为1:2:2。添加的丙二醇、甘油和75％乙醇，能够在滤棒吸收热量后产生气凝胶，并且烟草在加热过程中，烟叶会进行裂解反应，形成气凝胶的烟气，而加入醇类物质能够补充烟气的释放量。
可选地，所述香精为0.5-1.5份，所述香精包括冬虫夏草、烟叶提取物、裂解提取物、果味香精和薄荷香精。采用的香精能够在复合滤棒吸收热量后挥发，增加烟气中的香气，香精的添加量在该范围内，能够在卷烟的整个产生烟气的过程中持续补充香气，使得烟气的品质始终保持一致，提高吸食者在使用卷烟的过程中使用感。
可选地，所述粘合剂选自羧甲基纤维素钠、瓜尔胶和淀粉中的一种或多种。粘合剂在滤棒的成型中主要起到定型的作用，并且粘合剂在后续定型过程中部分会挥发，使得滤棒内部形成小孔洞，增加滤棒与烟气的接触面积，提高滤棒的热交换效率和导热效果，同时便于吸附烟气中的有害颗粒，提高烟气的过滤效果。进一步地，在滤棒吸热中，随着气凝胶的挥发，滤棒内的粘合剂和水分也会挥发，从而产生多孔结构，进一步提高滤棒对于烟气的降温、增香及过滤效果。
可选地，所述烟末、粘合剂、醇类及香精的重量比为60：11：25：5。
可选地，所述烟末由烟草原料经超微粉碎机粉碎得到，所述烟末的粒径35-60μm，优选为40-50μm。
可选地，所述冬虫夏草的粒径为40-180μm，优选为70-80μm。冬虫夏草的粒径和烟末的粒径在该范围内，比表面积合适，可提高烟末及冬虫夏草与烟气的接触面积，从而尽快吸收烟气中的热量，并转化为含香气的气凝胶，提高热交换和增香效率。
可选地，所述滤棒由蜂窝结构及围绕所述蜂窝结构的表皮组成，所述蜂窝结构包括多个支撑筋，所述支撑筋为透气性材料，相邻所述支撑筋之间和/或所述支撑筋与所述表皮之间形成所述烟气通道；
所述滤棒的进气端与卷烟的发烟芯材段连接，所述滤棒的出气端与卷烟的近唇端连接，烟气沿所述滤棒的进气端进入所述烟气通道并自所述滤棒的出气端流出。
蜂窝结构和表皮形成该复合滤棒，能够使得复合滤棒在圆周方向上具有一定的 硬度，加强该滤棒的支撑效果，该复合滤棒的降温效率不低于现有技术中的降温卷纸，但是相比于降温卷纸而言，该复合滤棒的吸阻低，还能产生含有香气的气凝胶，共同实现过滤、降温和增香的功能。
该滤棒中蜂窝结构的支撑筋能够对滤棒起到支撑作用，并且支撑筋与表皮之间形成的烟气通道能够同时起到降温和过滤的目的，无需单独使用降温物质，同时该滤棒可以通过注塑挤压成型，再定长切割成所需的长度，方便机械加工，并且该滤棒能够降低滤棒的吸阻，提高吸食者的体验感和满足感。
该滤棒能够自动化进行生产，将生产得到的滤棒放置于卷烟机上，便于卷烟烟支的装配，减少卷烟装配的流程，提高卷烟生产的自动化程度。
可选地，所述烟气通道包括中心通道和围绕所述中心通道周向设置的外围通道；通过支撑筋和表皮形成的中心通道和外围通道能够增大该滤棒的比表面积，增加烟气与滤棒的接触面积，从而提高该滤棒的降温和过滤效果；同时中心通道和外围通道之间可通过支撑筋进行互通，能够促使该滤棒充分吸收烟气的热量，提高滤棒的增香效果，进一步提高吸食者的体验感。
优选的，所述中心通道为1个，所述外围通道为4-8个，所述外围通道均匀的设置在所述中心通道的周向。烟气大部分先进去中心通道，与中心通道的侧壁发生碰撞之后再穿过支撑筋进入外围通道内，该设置能够保证烟气可沿滤棒的中心向周向均匀的扩散，提高烟气的降温效率，同时促使滤棒吸收烟气热量后产生均匀的气凝胶，增加滤棒中有效物质的释放效率，增香效果稳定，并且烟气在与中心通道和外围通道的侧壁发生多次碰撞之后，烟气中的杂质去除效率高。
可选地，所述中心通道为正多边形，所述多边形的边数与所述外围通道的数量一致，所述外围通道为扇形。该设置方式进一步增加烟气与滤棒的接触面积，并且有效分隔烟气路径，进入中心通道的烟气能够均匀的向其周向的各个外围通道内扩散，能够使得中心通道和外围通道内包含的有效物质充分与烟气接触，进行热量交换，在降温的同时达到再次产生香气的目的。
优选的，所述外围通道扇形的边长为0.9-1.5mm，优选为1.2mm，所述扇形的夹 角为30-120°，优选为60-80°。
可选地，所述支撑筋的厚度为0.4-0.6mm，所述表皮的厚度为0.8-1.2mm。优选的，所述支撑筋的厚度为0.5mm，所述表皮的厚度为1.0mm。支撑筋的厚度在保证起到稳定支撑作用的同时，还要保证烟气顺利的在烟气通道之内流通，进一步促使滤棒中的有效物质进行挥发，增加有效物质的释放效率，通常发烟芯材段内放置有薄片、颗粒或烟丝等物质，因此设置的支撑筋能够起到隔离的作用，阻止发烟芯材段的颗粒或烟丝在烟支的流动，保持颗粒或烟丝稳定性，表皮的厚度要比支撑筋的厚度要厚，表皮主要起到的是支撑和隔离的作用，通常情况下，该滤棒可直接被吸食者手握使用，因此在该厚度下，烟气能够与表皮的内侧壁进行热量交换，达到表皮外侧壁的烟气温度及烟气量很少，确保在过滤时表皮外侧温度不会太高，便于吸食者的使用。
可选地，所述烟气通道横截面积与所述滤棒横截面积的比值为(0.02-0.04)：1，优选为0.025：1。在该范围内，既能够烟气通道保证有效的分隔烟气的路径，还能够进一步提高中心通道和外围通道与烟气接触的有效面积，进一步提高该滤棒对烟气的降温、过滤及增香效果，同时还能对发烟芯材段的颗粒或烟丝起到隔离作用，避免颗粒或烟丝进入到滤棒内部，从而导致滤棒的吸阻升高。
优选的，所述烟气通道的横截面积为0.9-1.2mm 2，优选为1.05mm 2。
可选地，所述滤棒的长度为8-12mm，所述滤棒的直径为6-8mm。上述设置，既能够保证对烟气中的有害物质进行过滤，又能够保证滤棒对烟气进行充分降温，同时滤棒吸收热量后产生的气凝胶对烟气进行增香补充。
可选地，所述蜂窝结构和所述表皮一体成型。将该滤棒的组成物质进行混合够通过注塑挤出工艺得到该滤棒，并且还可将滤棒进行定长切割，便于滤棒的机械化成型加工，适用于大批量生产该滤棒。
可选地，所述滤棒的导热系数为0.1-0.4W/(m·k)，优选为0.3W/(m·k)。
可选地，所述滤棒的硬度为70-94，优选为84-94。
可选地，所述滤棒的透气度为0-1000CU，优选为200-300CU，更优选为260CU， 该CU是指[cm 3/(min·cm 2)]。
可选地，所述滤棒的振实密度为0.8-1.2g/cm 3，优选为0.9-1g/cm 3。
根据本申请的另一个方面，提供了一种烟支用滤棒，所述滤棒采用上述任一项所述制备方法制备得到。
根据本申请的另一个方面，提供了一种卷烟，其包括发烟芯材段、滤嘴和任一项所述的制备方法制备得到的滤棒，所述发烟芯材段、滤棒和滤嘴依次连接。可选地，所述卷烟包括加热不燃烧卷烟和传统卷烟；优选的，所述卷烟为加热不燃烧卷烟，滤嘴即为加热不燃烧卷烟的近唇端，该设置能够进一步提高加热不燃烧卷烟的过滤效果，该滤嘴可以为现有技术中已有的滤嘴。包含该滤棒的加热不燃烧卷烟，无需再单独设置降温段、支撑段、隔离段和过滤段，减少该加热不燃烧卷烟的零部件，可自动化生产该加热不燃烧卷烟，使得装配加热不燃烧卷烟更加方便，自动化生产程度高。
可选地，所述滤棒的长度与所述发烟芯材段长度的比值为30:45-60，优选为30:54。在该范围下，滤棒能够有效的对发烟芯材段产生的烟气进行降温、过滤和增香，能够使得吸食者的体验感达到最佳。
可选地，所述复合滤棒与所述发烟芯材段的空隙为0-0.02mm，优选为0mm。
本申请的有益效果包括但不限于：
1.根据本申请的烟支用滤棒的制备方法，原料易得，制备方法简单好操作，可充分利用香烟生产中的余料，香精中采用的冬虫夏草也可为生产香烟时残余的料渣，提高资源的循环利用率，保护生态环境。
2.根据本申请的烟支用滤棒的制备方法，将各组分原料混合后一次成型制得具有多个烟气通道的滤棒，能够增加滤棒与烟气的接触面积，可有效吸收烟气中的热量，并利用该热量产生含有香气的气凝胶，对卷烟进行增香。
3.根据本申请的烟支用滤棒的制备方法，制备的滤棒直接用于卷烟中，无需单独设置降温段、隔离段、支撑段或过滤段，简化滤棒的结构，相对于现有的降温颗粒，在提高烟气降温效率的同时，还能对烟气进行增香和过滤，使得该滤棒同时具 备降温、增香和过滤的功能。
附图说明
此处所说明的附图用来提供对本申请的进一步理解，构成本申请的一部分，本申请的示意性实施例及其说明用于解释本申请，并不构成对本申请的不当限定。在附图中：
图1为本申请实施例1涉及的烟支用滤棒的立体示意图；
图2为本申请实施例1涉及的烟支用滤棒的侧截面示意图；
图3为本申请实施例1涉及的烟支用滤棒的产品图
部件和附图标记列表：
1、滤棒；2、支撑筋；3、表皮；4、中心通道；5、外围通道。
实施方式
下面结合实施例详述本申请，但本申请并不局限于这些实施例。
如无特别说明，本申请的实施例中的原料均通过商业途径购买。
在22℃和60％湿度下，利用滤棒检测综合测试台对透气度和硬度进行测试，利用烟支适配型设备的热电偶进行导热系数的测试。
利用振实密度仪进行振实密度的测试。
要求：相对湿度小于85％，无凝结现象，环境整洁无烟尘，周围没有机械振动源或电磁干扰源。
将松装粉体装入有刻度量筒中，计量样品体积。将量筒固定于振动组件上。通过偏心轮按国内标准规定的频度、高度对振动组件底部进行拨动，使得量筒上下震动，量筒内的粉体体积按其自身特性会有不同程度的减少。将样品质量除以振实后的体积就得出该样品的的振实密度。
实施例1
本申请的实施例公开了一种烟支用滤棒1，如图1-3所示，该滤棒1包括：蜂窝结构及围绕蜂窝结构的表皮3，蜂窝结构包括多个支撑筋2，支撑筋2为透气性材料，相邻支撑筋2之间和/或支撑筋2与表皮3之间形成多个沿滤棒1轴向延伸的烟气通 道；滤棒1的进气端与卷烟发烟芯材段连接，滤棒1的出气端与卷烟近唇端连接，烟气沿滤棒1的进气端进入烟气通道并自滤棒1的出气端流出。该滤棒1中蜂窝结构的支撑筋2能够对滤棒1起到支撑作用，并且支撑筋2与表皮3之间形成的烟气通道能够同时起到降温和过滤的目的，无需单独使用降温物质，同时该滤棒1可以通过注塑挤压成型，再定长切割成所需的长度，方便机械加工，并且该滤棒1能够降低滤棒1的吸阻，提高吸食者的体验感和满足感。
具体的，该滤棒1的材质可以包括烟末、香精等有效物质，待烟气进入该烟气通道之后，烟气与烟气通道的侧壁进行碰撞并可穿过该支撑筋2达到相邻的烟气通道，热的烟气与滤棒1发生热量交换，滤棒1在吸收热量之后转化成香气物质气凝胶达到降温的同时还能增香，对于香烟的烟气进行补充，以使得该滤棒1同时实现过滤、降温和增香的功能，无需再对香烟单独使用降温段、支撑段、隔离段和过滤段的组装。
作为一种实施方式，烟气通道包括中心通道4和围绕中心通道4周向设置的外围通道5。通过支撑筋2和表皮3形成的中心通道4和外围通道5能够增大该滤棒1的比表面积，增加烟气与滤棒1的接触面积，从而提高该滤棒1的降温和过滤效果；同时中心通道4和外围通道5之间可通过支撑筋2进行互通，能够促使该滤棒1充分吸收烟气的热量，提高滤棒1的增香效果，进一步提高吸食者的体验感。
作为一种实施方式，中心通道4为1个，外围通道5为4-8个，外围通道5均匀的设置在中心通道4的周向，烟气大部分先进去中心通道4，与中心通道4的侧壁发生碰撞之后再穿过支撑筋2进入外围通道5内，该设置能够保证烟气可沿滤棒1的中心向周向均匀的扩散，提高烟气的降温效率，同时促使滤棒1吸收烟气热量后产生均匀的气凝胶，增加滤棒1中有效物质的释放效率，增香效果稳定，并且烟气在与中心通道4和外围通道5的侧壁发生多次碰撞之后，烟气中的杂质去除效率高。
作为一种实施方式，中心通道4为正多边形，多边形的边数与外围通道5的数量一致，外围通道5为扇形，该设置方式进一步增加烟气与滤棒1的接触面积，并且有效分隔烟气路径，进入中心通道4的烟气能够均匀的向其周向的各个外围通道5 内扩散，能够使得中心通道4和外围通道5内包含的有效物质充分与烟气接触，进行热量交换，在降温的同时达到再次产生香气的目的。
作为一种实施方式，支撑筋2的厚度为0.4-0.6mm，表皮3的厚度为0.8-1.2mm。优选的，支撑筋2的厚度为0.5mm，表皮3的厚度为1.0mm，支撑筋2的厚度在保证起到稳定支撑作用的同时，还要保证烟气顺利的在烟气通道之内流通，进一步促使滤棒1中的有效物质进行挥发，增加有效物质的释放效率，通常发烟芯材段内放置有薄片、颗粒或烟丝等物质，因此设置的支撑筋2能够起到隔离的作用，阻止发烟芯材段的颗粒或烟丝在烟支的流动，保持颗粒或烟丝稳定性，表皮3的厚度要比支撑筋2的厚度要厚，表皮3主要起到的是支撑和隔离的作用，通常情况下，该滤棒1可直接被吸食者手握使用，因此在该厚度下，烟气能够与表皮3的内侧壁进行热量交换，达到表皮3外侧壁的烟气温度及烟气量很少，确保在过滤时表皮3外侧温度不会太高，便于吸食者的使用。
作为一种实施方式，中心通道4的横截面积与滤棒1横截面积的比值为0.02-0.04：1，优选为0.025：1。在该范围内，既能够烟气通道保证有效的分隔烟气的路径，还能够进一步提高中心通道4和外围通道5与烟气接触的有效面积，进一步提高该滤棒1对烟气的降温、过滤及增香效果，同时还能对发烟芯材段的颗粒或烟丝起到隔离作用，避免颗粒或烟丝进入到滤棒1内部，从而导致滤棒1的吸阻升高。
作为一种实施方式，滤棒1的长度为8-12mm，滤棒1的直径为6-8mm，上述设置，既能够保证对烟气中的有害物质进行过滤，又能够保证滤棒1对烟气进行充分降温，同时滤棒1吸收热量后产生的气凝胶对烟气进行增香补充。
作为一种实施方式，蜂窝结构和表皮3一体成型，将该滤棒1的组成物质进行混合够通过注塑挤出工艺得到该滤棒1，并且还可将滤棒1进行定长切割，便于滤棒1的机械化成型加工，适用于大批量生产该滤棒1。
根据本申请的另一个方面，提供了一种卷烟，该卷烟包括发烟芯材段、滤嘴和上述任一实施方式的烟支用滤棒1，其中发烟芯材段、烟支用滤棒1和滤嘴依次连接。
作为一种实施方式，所述卷烟包括加热不燃烧卷烟和传统卷烟；优选的，所述 卷烟为加热不燃烧卷烟，滤嘴即为加热不燃烧卷烟的近唇端，该设置能够进一步提高加热不燃烧卷烟的过滤效果，该滤嘴可以为现有技术中已有的滤嘴。包含该滤棒1的加热不燃烧卷烟，无需再单独设置降温段、支撑段、隔离段和过滤段，减少该加热不燃烧卷烟的零部件，可自动化生产该加热不燃烧卷烟，使得装配加热不燃烧卷烟更加方便，自动化生产程度高。
作为一种实施方式，滤棒1的长度与发烟芯材段长度的比值为30:45-60，优选为30:54，在该范围下，滤棒1能够有效的对发烟芯材段产生的烟气进行降温、过滤和增香，能够使得吸食者的体验感达到最佳。
实施例2
将重量比为(50-90)：(5-15)：(5-25)：(0-10)的烟末、粘结剂、醇类和香精在40-70℃下混合搅拌0.5-3h制得滤棒浆料，之后在50-60℃下挤出成型，烘干后得到滤棒。
优选的，烘干包括一次烘干和二次烘干步骤：
一次烘干：滤棒浆料在滤棒成型机中挤出成型后得到湿棒，在65-85℃下烘干至湿棒的水分含量为20-25％；
二次烘干：对湿棒进行定长切割，并在20-40℃下烘干至湿棒的水分含量为10-13％，即得滤棒。
采用上述方法制备滤棒1#-9#和对比滤棒D1#-D3#，具体方法不同之处如下表1所示：
其中，CMC为羧甲基纤维素钠的简称，滤棒1#-9#和对比滤棒D2#-D3#中所用的烟末的粒径在40-50μm之间。对比滤棒D1#所用的烟末粒径为50-80μm。
表1
Figure PCTCN2022073783-appb-000001
Figure PCTCN2022073783-appb-000002
Figure PCTCN2022073783-appb-000003
对上述制备的滤棒1#-9#和对比滤棒D1#-D3#进行性能测试，测试结果如下表2所示：
表2
Figure PCTCN2022073783-appb-000004
Figure PCTCN2022073783-appb-000005
实施例3
将上述制备的滤棒1#-9#和对比滤棒D1#-D3#组装得到加热不燃烧卷烟1#-9#和对比加热不燃烧卷烟D1#-D3#，其中加热不燃烧卷烟中添加颗粒的粒径为20-25目，填充重量为0.25g左右，另外还按照滤棒1#中各组分的比例得到滤棒浆料1#，并将滤棒浆料1#挤出造粒，得到降温颗粒，其中降温颗粒的粒径为0.8-2.0mm，将该降温颗粒按照现有的组装工艺放入夹烟筒内，并按照与滤棒1#-9#和对比滤棒D1#-D3#相同的组装工艺得到对比加热不燃烧卷烟D4#。
对上述加热不燃烧卷烟1#-9#和对比加热不燃烧卷烟D1#-D4#进行感官质量评价：
参照传统卷烟感官质量评吸方法，选取烟雾量、烟气温度、香气、谐调、刺激性、杂气(味)、余味等七项指标作为加热不燃烧新概念卷烟的感官评价指标。其中，烟雾量是指烟雾的多少或浓淡(丰满)程度；香气是指评吸过程中感官感受到的令人愉悦的芳香气息；谐调是指香气风格和谐统一，感觉不出其中某一单体的特性；杂气是指烟气中含有的令人感到不愉快的气息，如由加热不燃烧新概念卷烟中甘油或丙二醇带来的甜腻感、化学气息等；刺激性是指烟气对感官上所造成的的轻微和明显的不适感受，如对鼻腔、口腔、喉部的冲刺、毛棘火燎等；余味是指烟气从口腔、鼻腔呼出后，遗留下来的味觉感受，包括舒适程度、干净程度和干燥感。
评价试样前或评价试样过程中，应对标准样品(IQOS产品或glo产品)进行感 官评价，以便校准口径。
加热不燃烧新概念卷烟质量积分采用百分制，最高分数为100分；各项目均以0.5分为记分单位；在对六个指标评价记分时，每个指标的质量达到相应项目的要求，则相应记分。加热不燃烧新概念卷烟的感官质量评价标准可参照以下表3。
表3加热不燃烧新概念卷烟感官评价标准
Figure PCTCN2022073783-appb-000006
感官质量的评价方法是由评吸小组中的33名专业人士分别按照表3所示的量化表对加热不燃烧卷烟的烟雾量、烟气温度、香气、谐调、刺激性、杂气和余味进行评价指标量化评分(注：评分最低以0.5分进制)，再计算单项指标的平均得分，列于表4中，感官质量得分以各单项平均得分之和表示，精确至0.1。
表4评吸小组对加热不燃烧卷烟各评价指标的平均得分及总分
Figure PCTCN2022073783-appb-000007
Figure PCTCN2022073783-appb-000008
根据表4的内容可知，本申请中加热不燃烧卷烟1#的得分最高，证明该滤棒1#能够发挥在降温和过滤的同时，可对烟气进行补充，使得加热不燃烧卷烟的烟气香气更丰富，杂气更少；而采用相同物质组分制成的降温颗粒得到的对比加热不燃烧卷烟D4#，其虽然降温材料组成与加热不燃烧卷烟1#相同，但是降温颗粒的形态没 有滤棒的降温效果及增香效果好，降温颗粒的整体感观质量变差。
采用转盘式吸烟机对上述加热不燃烧卷烟1#-9#和对比加热不燃烧卷烟D1#-D4#进行抽吸测试，配合气相色谱对上述加热不燃烧卷烟1#-9#和对比加热不燃烧卷烟D1#-D4#的烟气中进行焦油、一氧化碳和烟碱的检测，检测得知，加热不燃烧卷烟1#-9#产生的烟气中焦油、一氧化碳和烟碱含量明显低于对比加热不燃烧卷烟D1#-D4#，其中加热不燃烧卷烟1#的烟气中焦油、一氧化碳和烟碱含量最低，同时仍能满足用户的使用体验。
以上所述，仅为本申请的实施例而已，本申请的保护范围并不受这些具体实施例的限制，而是由本申请的权利要求书来确定。对于本领域技术人员来说，本申请可以有各种更改和变化。凡在本申请的技术思想和原理之内所作的任何修改、等同替换、改进等，均应包含在本申请的保护范围之内。

Claims (10)

  1. 一种烟支用滤棒的制备方法，其特征在于，包括下述步骤：
    将烟末、粘结剂、醇类和香精混合搅拌制得滤棒浆料，将所述滤棒浆料挤出成型并烘干后得到所述滤棒，所述滤棒具有多个沿所述滤棒轴向延伸的烟气通道；
    其中，所述烟末、粘合剂、醇类及香精的重量比为(50-90)：(5-15)：(5-25)：(0-10)。
  2. 根据权利要求1所述的烟支用滤棒的制备方法，其特征在于，所述混合温度为40-70℃，所述混合时间为0.5-3h，所述挤出成型温度为50-60℃。
  3. 根据权利要求2所述的烟支用滤棒的制备方法，其特征在于，所述烘干包括一次烘干和二次烘干步骤：
    一次烘干：所述滤棒浆料在滤棒成型机中挤出成型后得到湿棒，在65-85℃下烘干至湿棒的水分含量为20-25％；
    二次烘干：对湿棒进行定长切割，并在20-40℃下烘干至湿棒的水分含量为8-13％，即得所述滤棒。
  4. 根据权利要求1所述的烟支用滤棒的制备方法，其特征在于，所述醇类选自乙醇、甘油、丙二醇、丁二醇、己二醇和季戊四醇中的一种或多种；和/或
    所述香精为0.5-1.5份，所述香精包括冬虫夏草、烟叶提取物、裂解提取物、果味香精和薄荷香精；和/或
    所述粘合剂选自羧甲基纤维素钠、瓜尔胶和淀粉中的一种或多种。
  5. 根据权利要求4所述的烟支用滤棒的制备方法，其特征在于，所述烟末、粘合剂、醇类及香精的重量比为60：11：25：5。
  6. 根据权利要求1-5任一项所述的烟支用滤棒的制备方法，其特征在于，所述烟末由烟草原料经超微粉碎机粉碎得到，所述烟末的粒径35-60μm，优选为40-50μm。
  7. 根据权利要求1-5任一项所述的烟支用滤棒的制备方法，其特征在于，所述烟气通道包括中心通道和围绕所述中心通道周向设置的外围通道；
    优选的，所述中心通道为1个，所述外围通道为4-8个，所述外围通道均匀的设置在所述中心通道的周向。
  8. 根据权利要求7所述的烟支用滤棒的制备方法，其特征在于，所述烟气通道横截面积与所述滤棒横截面积的比值为(0.02-0.04)：1。
  9. 根据权利要求8所述的烟支用滤棒的制备方法，其特征在于，所述滤棒的导热系数为0.1-0.4W/(m·k)，优选为0.3W/(m·k)。
  10. 一种烟支用滤棒，其特征在于，所述滤棒采用权利要求1-9任一项所述制备方法制备得到。
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