GB2587508A - Method for preparing low-suction-resistance polylactic acid tow filter rod used for reducing temperature of cigarette vapor - Google Patents

Method for preparing low-suction-resistance polylactic acid tow filter rod used for reducing temperature of cigarette vapor Download PDF

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Publication number
GB2587508A
GB2587508A GB2016466.1A GB202016466A GB2587508A GB 2587508 A GB2587508 A GB 2587508A GB 202016466 A GB202016466 A GB 202016466A GB 2587508 A GB2587508 A GB 2587508A
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Prior art keywords
phase change
temperature
filter rods
smoke
cigarette
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GB202016466D0 (en
GB2587508B (en
Inventor
Yang Tao
Yang Zigang
Fan Xinlei
Lei Lianlong
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Yunnan Tobacco Biological Tech Co Ltd
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Yunnan Tobacco Biological Tech Co Ltd
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Classifications

    • 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
    • A24D3/0204—Preliminary operations before the filter rod forming process, e.g. crimping, blooming
    • A24D3/0212—Applying additives to filter materials
    • A24D3/022—Applying additives to filter materials with liquid additives, e.g. application of plasticisers
    • A—HUMAN NECESSITIES
    • A24—TOBACCO; CIGARS; CIGARETTES; SIMULATED SMOKING DEVICES; SMOKERS' REQUISITES
    • A24B—MANUFACTURE OR PREPARATION OF TOBACCO FOR SMOKING OR CHEWING; TOBACCO; SNUFF
    • A24B15/00—Chemical features or treatment of tobacco; Tobacco substitutes, e.g. in liquid form
    • A24B15/18—Treatment of tobacco products or tobacco substitutes
    • A24B15/28—Treatment of tobacco products or tobacco substitutes by chemical substances
    • A24B15/30—Treatment of tobacco products or tobacco substitutes by chemical substances by organic substances
    • A—HUMAN NECESSITIES
    • A24—TOBACCO; CIGARS; CIGARETTES; SIMULATED SMOKING DEVICES; SMOKERS' REQUISITES
    • A24B—MANUFACTURE OR PREPARATION OF TOBACCO FOR SMOKING OR CHEWING; TOBACCO; SNUFF
    • A24B15/00—Chemical features or treatment of tobacco; Tobacco substitutes, e.g. in liquid form
    • A24B15/18—Treatment of tobacco products or tobacco substitutes
    • A24B15/28—Treatment of tobacco products or tobacco substitutes by chemical substances
    • A24B15/30—Treatment of tobacco products or tobacco substitutes by chemical substances by organic substances
    • A24B15/302—Treatment of tobacco products or tobacco substitutes by chemical substances by organic substances by natural substances obtained from animals or plants
    • 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
    • A24D1/18—Selection of materials, other than tobacco, suitable for smoking
    • 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
    • A24D3/04—Tobacco smoke filters characterised by their shape or structure
    • A24D3/048—Tobacco smoke filters characterised by their shape or structure containing additives
    • 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
    • A24D3/06—Use of materials for tobacco smoke filters
    • A24D3/062—Use of materials for tobacco smoke filters characterised by structural features
    • A24D3/063—Use of materials for tobacco smoke filters characterised by structural features of the fibers
    • 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
    • A24D3/06—Use of materials for tobacco smoke filters
    • A24D3/067—Use of materials for tobacco smoke filters characterised by functional properties
    • A24D3/068—Biodegradable or disintegrable
    • 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
    • A24D3/06—Use of materials for tobacco smoke filters
    • A24D3/08—Use of materials for tobacco smoke filters of organic materials as carrier or major constituent
    • 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
    • A24D3/06—Use of materials for tobacco smoke filters
    • A24D3/14—Use of materials for tobacco smoke filters of organic materials as additive
    • 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

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  • Chemical & Material Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Materials Engineering (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Toxicology (AREA)
  • Health & Medical Sciences (AREA)
  • General Health & Medical Sciences (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • General Chemical & Material Sciences (AREA)
  • Biodiversity & Conservation Biology (AREA)
  • Agronomy & Crop Science (AREA)
  • Botany (AREA)
  • Cigarettes, Filters, And Manufacturing Of Filters (AREA)

Abstract

A low-suction-resistance PLA tow filter rod for reducing the temperature of cigarette vapor and a preparation method therefor. The preparation method comprises steps of preparing a phase-change material mixture, preparing a phase-change material containing a flavor substance, preparing a slow-release flavor filter rod, etc. By increasing the addition amount of a phase-change material and performing combination with a low-suction-resistance PLA tow filter rod, by means of triple cooling, the overall suction taste of a cigarette and a heat-not-burn cigarette is improved and the temperature of cigarette vapor is also reduced, so that the suction comfort of a consumer is improved. The technological process is simple, and it is applicable to industrial production.

Description

A Method for Preparing PLA Tow Filter Rods with Low Draw Resistance for Reducing the Temperature of Smoke The present invention claims priority of Chinese patent application NO.
CN2018103523517 "A method for preparing PLA tow filter rods with low draw resistance for reducing the temperature of smoke-, filed April 19, 2018.
[Field of invention]
The present invention belongs to the technical field of cigarette products.
More specifically, the invention relates to a method for preparing polylactic acid tow filter rods with low draw resistance for reducing the temperature of smoke. [Background of the invention] Smoke is released through the process of tobacco combustion and distillation cracking. The smoke is filtered through a filter before it is inhaled into the mouth of a consumer, when the temperature of the smoke decreases slightly, but the temperature of the mainstream smoke reaching the mouth can still reach 35-39°C.
High smoke temperature will bring the stimulation of smoke and burning sensation in the mouth, reducing the comfort of consumers, especially in the back end of cigarette. To control the temperature of cigarette smoke, developers and designers have increased the length of filters or applied ventilation techniques, but these techniques can lead to problems such as reduced cigarette smoke concentration and difficulty in smoking, in the use of a certain limitation.
Heat-not-burn tobacco products allows consumers to inhale the aroma of 25 tobacco as compared to conventional cigarettes, while reducing the harmful smoke components that are cracked and distilled during the burning process of conventional cigarettes. Under the temperature of 200-400°C, tobacco materials are heated by carbon or electricity, but not burn, so that smoke are produced after low-temperature pyrolysis. The temperature of smoke is 45-90°C after filtered.
There is a cooling structure in the cigarette structure of heat-not-burn cigarette products in the market to reduce the temperature of smoke and improve the comfort of smoking, but the effect is not very ideal. Reducing the temperature of smoke is a key technology for heat-not-burn tobacco products.
Phase change materials are more and more widely used in filter rods mainly for carrying flavoring substance. CN105595417 A discloses a linear composite gel filter rods slow-releasing flavor, and a preparation method thereof, as well as the use thereof which can effectively increase the amount, imifonnity, controllability and stability of flavoring to the filter rod. It has rarely been reported io on the cooling effect. The PCM itself is an endothermic reaction. During the solid to liquid phase transition, a large amount of heat is absorbed which is a physical cooling process Therefore, the invention is finally completed on the basis of the prior art through a large number of experimental studies and summaries.
is [Detailed Description of the Invention]
[Technical Problem to be solved] One object of the present invention is to provide a method for preparing polylactic acid tow filter rods with low draw resistance for reducing the temperature of smoke.
[Technical Plan] The present invention is achieved by the following technical plan.
The invention relates to a method for preparing polylactic acid (PLA) tow filter rods with low draw resistance for reducing the temperature of smoke.
The preparation method comprises steps as follows: A. Preparation of the mixture of phase change material PEG-400, PEG-1000, PEG-1500, water and stearic acid are mixed according to the mass ratio of 10-30:15-40:10-50:10-20:5-10 to obtain the said mixture of phase change materials; B. preparation of phase change materials containing flavoring substances The flavoring substances is mixed with the mixture of phase change materials obtained in step A in a mass ratio of 10-70:35-85, then added to a sealed water bath, heated and dissolved under the temperature of 60-80°C with agitation, and then kept at temperature of 90°C, to obtain the said phase change material solution containing flavoring substance; C Preparation of the filter rods slow-releasing flavor The phase change material solution containing flavoring substance obtained in Step B is sprayed onto PLA tows of filter rods in a mass ratio of 1-15:8-10 by a spraying device with a shaped nozzle, and then solidified and formed by a filter rod maker, to obtain the said PLA tow filter rods with low draw resistance for reducing the temperature of smoke.
According to a preferred embodiment of the invention, the flavor substance is one or more flavor substance(s) selected from alcohol extracts, food flavor substances or humectants.
According to another preferred embodiment of the invention, the said alcohol extract is one or more alcohol extract(s) selected from plum extract, tree moss concrete or licorice extract; the said food flavor substance is one or more flavor substance(s) selected from the flavor substances of wine, flower, fruit or mint; and the said humectant is one or more humectant(s) selected from glycerol, propylene glycol or sorbitol.
According to another preferred embodiment of the invention, the said nozzle shape is composed of one or more phase change material line(s).
According to another preferred embodiment of the invention, the said shape is line, circle, polygon or irregular shape.
According to another preferred embodiment of the invention, the said flavoring substance of the phase change material is located at the center of filter Rods.
The invention also relates to a PLA tow filter rods with low draw resistance for reducing the temperature of smoke prepared according to the above preparation method.
The structure of the said PLA tow filter rods with low draw resistance for reducing the temperature of smoke is shown in Fig. 1.
According to a preferred embodiment of the invention, the draw resistance 5 of the said PLA tow filter rods is 300-1200PA.
According to another preferred embodiment of the invention, the circumference of the said PLA tow filter rods is 16.0-25.0mm Through a combination of increasing the amount of the phase change materials and PLA tow filter rods with low draw resistance, the invention improves the overall smoking taste of the cigarette and the heat-non-burn cigarette by triple cooling, and at the same time reduces the temperature of smoke, improves consumers' smoking comfort. The method of the present invention has simple process flow and is suitable for industrial production.
[Beneficial Effects] is The beneficial effects of the present invention include: The present invention is suitable for cigarette filter rods or heat-not-burn tobacco products. The PLA tow of the invention has the advantages of degradability, low heat transfer coefficient, and the smoke changing from solid state to liquid state through the phase change material is also an endothermic process, which greatly reduces the smoke temperature. At the same time, the phase change material is used as the incense carrier, after the elution of smoke, the flavoring substance and water can be released, and the richness of the flavoring substance can be increased. In addition, the specific heat capacity of water is relative large, which has a certain effect on cooling. Through a combination of increasing the amount of the phase change materials and PLA tow filter rods with low draw resistance, the invention improves the overall smoking taste of the cigarette and the heat-not-burn cigarette by triple cooling, and meanwhile reduces the temperature of smoke, improves consumers' smoking comfort. The method of the present invention has simple process flow and is suitable for industrial producti on.
[Brief Description of the Drawings]
Fig. 1 is a structural sketch of PLA tow filter rods with low draw resistance for reducing the temperature of smoke of the present invention; In which, 1-wrap paper; 2-PLA tow; 3-phase change material.
[Embodiments] The invention can be better understood by the following examples.
Example 1: Preparation of the PLA tow filter rods with low draw resistance for reducing the temperature of smoke The steps of the example are as follows: A. Preparation of the mixture of phase change materials PEG-400, PEG-1000, PEG-1500, water and stearic acid are mixed according to the mass ratio of 15:22:46:11:6 to obtain the said mixture of phase change 15 materials; B. Preparation of phase change materials containing flavoring substances The Tree Moss extract is mixed with the mixture of phase change materials obtained in step A in a mass ratio of 46:54, then added to a sealed water bath, heated and dissolved under the temperature of 67°C with agitation, and then kept 20 at temperature of 90°C, to obtain the said phase change material solution containing flavoring substance; C. Preparation of the filter rods slow-releasing flavor The phase change material solution containing flavoring substance obtained in Step B is sprayed onto PLA tows of filter rods in a mass ratio of 2:7 by a spraying device with a shaped nozzle, and then solidified and formed by a filter rod maker, to obtain the said PLA tow filter rods with low draw resistance for reducing the temperature of smoke. The detection was carried out by conventional method for draw resistance, which shows that the draw resistance of the filter rod is 547Pa and the circumference is 24.2mm.
By using a conventional making and assembling equipment, the PEA tow filter rods prepared by the example is connected to the back end of the conventional cigarette rod to obtain the cigarette sample A. By using a modified making and assembling device, the PLA tow filter rods is connected to the back end of the heat-not-burn to obtain the cigarette sample A-1.
Example 2: Preparation of the PLA tow filter rods with low draw resistance for reducing the temperature of smoke The steps of the example are as follows: A. Preparation of the mixture of phase change materials io PEG-400, PEG-1000, PEG-1500, water and stearic acid are mixed according to the mass ratio of 21:24:39:9:7 to obtain the said mixture of phase change materials; B. Preparation of phase change materials containing flavoring substances The Tangerine peel and mint flavor is mixed with the mixture of phase 15 change materials obtained in step A in a mass ratio of 53:47, then added to a sealed water bath, heated and dissolved under the temperature of 72°C with agitation, and then kept at temperature of 90°C, to obtain the said phase change material solution containing flavoring substance; C. Preparation of the filter rods slow-releasing flavor The phase change material solution containing flavoring substance obtained in Step B is sprayed onto PLA tows of filter rods in a mass ratio of 5:10 by a spraying device with a shaped nozzle, and then solidified and formed by a filter rod maker, to obtain the said PLA tow filter rods with low draw resistance for reducing the temperature of smoke. The detection was carried out by conventional method for draw resistance, which shows that the draw resistance of the filter rod is 834Pa and the circumference is 24.2mm.
By using a conventional making and assembling equipment, the PEA tow filter rods prepared by the example is connected to the back end of the conventional cigarette rod to obtain the cigarette sample B. By using a modified making and assembling device, the PLA tow filter rods is connected to the back end of the heat-not-burn to obtain the cigarette sample B-1.
Example 3: Preparation of the PLA tow filter rods with low draw resistance for reducing the temperature of smoke The steps of the example are as follows: A. Preparation of the mixture of phase change materials PEG-400, PEG-1000, PEG-1500, water and stearic acid are mixed according to the mass ratio of 23:14:46:12:5 to obtain the said mixture of phase change materials; B. Preparation of phase change materials containing flavoring substances The mixture of propylene glycol and sorbitol in the mass ratio of 1:2 to obtain a flavor substance, which is then mixed with the mixture of phase change materials obtained in step A in a mass ratio of 39:61, then added to a sealed water bath, heated and dissolved under the temperature of 65°C with agitation, and then 15 kept at temperature of 90°C, to obtain the said phase change material solution containing flavoring substance; C. Preparation of the filter rods slow-releasing flavor The phase change material solution containing flavoring substance obtained in Step B is sprayed onto PLA tows of filter rods in a mass ratio of 10:10 by a spraying device with a shaped nozzle, and then solidified and formed by a filter rod maker, to obtain the said PLA tow filter rods with low draw resistance for reducing the temperature of smoke. The detection was carried out by conventional method for draw resistance, which shows that the draw resistance of the filter rod is 1124Pa and the circumference is 24.2mm.
By using a conventional making and assembling equipment, the PLA tow filter rods prepared by the example is connected to the back end of the conventional cigarette rod to obtain the cigarette sample C. By using a modified making and assembling device, the PLA tow filter rods is connected to the back end of the heat-not-burn to obtain the cigarette sample C-1.
The cigarette sample prepared in Examples 1-3 is simulated smoking according to the cigarette smoking model prescribed by the National Standard YC/T29-1996, and the temperature at the center of the cigarette filter rod during smoking is measured by the k-type thermocouple temperature detector. The results are shown in tables 1 and 2.
Table l* Measurement Results of the Temperature of Mainstream Smoke of Conventional Cigarettes Samples Lowest Highest Sensory Evaluation Temperature of Temperature of Smoke Smoke Control 37.4°C 60.6°C There was burning in the mouth at the last few puffs.
Cigarette A 36.4°C 47.5°C The oral cavity was more comfortable, did not have the burning feeling, the flavor material released evenly.
Cigarette B 36.2°C 43.2°C The oral cavity was more comfortable, did not have the burning feeling, the flavor material released evenly.
Cigarette C 35.5°C 42.1°C The oral cavity was more comfortable, did not have the burning feeling, the smoke moist feeling was good.
Table 2: Measurement Results of the Temperature of Mainstream Smoke of Heat-not-burn Cigarettes Samples Lowest Highest Sensory Evaluation Temperature of Temperature of Smoke Smoke Control 43.5°C 67.2°C There was burning in the mouth at the last few puffs.
Cigarette A-1 38.4°C 51:3°C The oral cavity was more comfortable, had slight burning feeling, the flavor material released evenly.
Cigarettes B-1 37.5°C 47.4°C The oral cavity was more comfortable, did not have the burning feeling, the flavor material released evenly.
Cigarette C-1 36.3°C 42.6°C The oral cavity was more comfortable, did not have the burning feeling, the smoke moist feeling was good.
The measurement data in Table 1 and Table 2 showed that the mainstream smokes of the tobacco products using the PLA tow filter rods with low draw resistance of the present invention was lower in temperature than the control sample. The oral cavity had no burning sensation after adding a certain proportion 5 of phase change material. The smoking comfort was good, at the same time, the flavor substances were released evenly, and the smoke temperature decreased more obviously with the increase of the amount of PCM added. The reason is that the heat transfer coefficient of PLA is very low, the physical heat absorption of PCM and the specific heat capacity of water in PCM are large. After such a triple 10 cooling, the mainstream temperature of smoke is greatly reduced when the mainstream smoke passes through. The more the phase change material is added, the more obvious the cooling effect is. In the present invention, the cooling function of the phase change material is greater than the function of carrying incense.

Claims (9)

  1. What is claimed is: 1. A method for preparing polylactic acid tow filter rods with low draw resistance for reducing the temperature of smoke, characterized in that the method comprises steps as follows: A. Preparation of the mixture of phase change materials PEG-400, PEG-1000, PEG-1500, water and stearic acid are mixed according to the mass ratio of 10-30:15-40:10-50:10-20:5-10 to obtain the said mixture of phase change materials; B. Preparation of phase change materials containing flavoring substances The flavoring substances is mixed with the mixture of phase change materials obtained in step A in a mass ratio of 10-70:35-85, then added to a sealed water bath, heated and dissolved under the temperature of 60-80°C with agitation, and then kept at temperature of 90°C, to obtain the said phase change material 15 solution containing flavoring substance; C. Preparation of the filter rods slow-releasing flavor The phase change material solution containing flavoring substance obtained in Step B is sprayed onto PLA tows of filter rods in a mass ratio of 1-15:8-10 by a spraying device with a shaped nozzle, and then solidified and formed by a filter rod maker, to obtain the said PLA tow filter rods with low draw resistance for reducing the temperature of smoke.
  2. 2. The method according to claim 1, characterized in that in step B, the said flavoring substance is one or more flavoring substance(s) selected from alcohol extracts, food flavor substances or humectants.
  3. 3. The method according to claim 2, characterized in that the said alcohol extract is one or more alcohol extract(s) selected from plum extract, tree moss extract or licorice extract; the said food flavor substance is one or more food flavor substance(s) selected from flavor substances of wine, flower, fruit or mint; the said humectant is one or more humectant(s) selected from glycerol, propylene glycol or sorbitol.
  4. 4. The method according to claim 1, characterized in that in Step C, the said nozzle shape is composed of one or more phase change material line(s).
  5. 5. The method according to claim 4, characterized in that the shape is line, circle, polygon or irregular shape.
  6. 6. The method according to claim 1, characterized in that in step B, the said flavoring substance contained in the phase change material is located at the center of filter rods.to
  7. 7. The PLA tow filter rods with low draw resistance for reducing the temperature of smoke obtained by the method according to any of claim 1-6.
  8. 8. The method according to claim 1, characterized in that draw resistance of the said PLA tow filter rods is 300-1200Pa.
  9. 9. The method according to claiml, characterized in that the circumference 15 of the said PLA tow filter rods is 16.0-25.0mm
GB2016466.1A 2018-04-19 2019-04-18 A Method for Preparing PLA Tow Filter Rods with Low Draw Resistance for Reducing the Temperature of Smoke Active GB2587508B (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
CN201810352351.7A CN108523216B (en) 2018-04-19 2018-04-19 Preparation method of polylactic acid tow filter stick for reducing smoke temperature and reducing suction resistance
PCT/CN2019/083184 WO2019201290A1 (en) 2018-04-19 2019-04-18 Method for preparing low-suction-resistance polylactic acid tow filter rod used for reducing temperature of cigarette vapor

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GB202016466D0 GB202016466D0 (en) 2020-12-02
GB2587508A true GB2587508A (en) 2021-03-31
GB2587508B GB2587508B (en) 2021-09-29

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JP (1) JP6932859B2 (en)
KR (1) KR102251658B1 (en)
CN (1) CN108523216B (en)
GB (1) GB2587508B (en)
RU (1) RU2761996C1 (en)
WO (1) WO2019201290A1 (en)

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CN108523216B (en) * 2018-04-19 2020-08-25 云南巴菰生物科技有限公司 Preparation method of polylactic acid tow filter stick for reducing smoke temperature and reducing suction resistance
CN109288123B (en) * 2018-08-24 2021-08-20 湖南中烟工业有限责任公司 Cooling filter tip and cigarette
CN109222229A (en) * 2018-10-11 2019-01-18 湖北中烟工业有限责任公司 A kind of menthol base phase change composite material
CN109846085A (en) * 2018-12-25 2019-06-07 杨成云 A kind of preparation method of netted polylactic acid silk screen cigarette filter tip rod
CN109793274B (en) * 2019-01-30 2024-01-19 湖北中烟工业有限责任公司 Flavored novel heating non-combustible cigarette and preparation method thereof
WO2020258466A1 (en) * 2019-06-28 2020-12-30 湖北中烟工业有限责任公司 Phase-change material, preparation method therefor and use thereof
CN111040735B (en) * 2019-11-13 2021-02-26 湖北中烟工业有限责任公司 Preparation method of composite phase-change film material capable of being used for heating non-burning cigarette filter tip to reduce smoke temperature
KR102385868B1 (en) * 2019-12-18 2022-04-12 주식회사 케이티앤지 A smoking article including tube filter and manufacturing method thereof
CN110946324A (en) * 2019-12-26 2020-04-03 王传涛 Production method of ginsenoside gel filter stick
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