WO2019201290A1 - 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
WO2019201290A1
WO2019201290A1 PCT/CN2019/083184 CN2019083184W WO2019201290A1 WO 2019201290 A1 WO2019201290 A1 WO 2019201290A1 CN 2019083184 W CN2019083184 W CN 2019083184W WO 2019201290 A1 WO2019201290 A1 WO 2019201290A1
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WO
WIPO (PCT)
Prior art keywords
preparation
filter rod
change material
phase change
polylactic acid
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PCT/CN2019/083184
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French (fr)
Chinese (zh)
Inventor
杨涛
杨紫刚
范馨雷
雷连龙
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云南巴菰生物科技有限公司
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Application filed by 云南巴菰生物科技有限公司 filed Critical 云南巴菰生物科技有限公司
Priority to RU2020137744A priority Critical patent/RU2761996C1/en
Priority to JP2020558528A priority patent/JP6932859B2/en
Priority to GB2016466.1A priority patent/GB2587508B/en
Priority to KR1020207033208A priority patent/KR102251658B1/en
Publication of WO2019201290A1 publication Critical patent/WO2019201290A1/en

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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
    • A24D3/02—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
    • 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
    • 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
    • A24D3/04—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

Definitions

  • the invention belongs to the technical field of cigarette product production. More specifically, the present invention relates to a method for preparing a polylactic acid tow filter rod for reducing smoke temperature and low moisture absorption.
  • the flue gas is released through the process of tobacco burning and distillation cracking.
  • the flue gas is filtered through the filter before being sucked into the consumer's mouth.
  • the temperature of the flue gas will be slightly lowered, but the temperature of the mainstream flue gas reaching the oral cavity can still reach 35- 90 ° C.
  • the high temperature of the flue gas will bring about the stimulation of the flue gas and the burning sensation of the mouth, which reduces the comfort of the suction of the consumer, and the rear end of the cigarette smoking is particularly obvious.
  • developers In order to control the temperature of cigarette smoke, developers have increased the length of the filter or applied ventilation technology, but these techniques can lead to problems such as reduced cigarette smoke concentration, pumping and other problems, and have certain limitations in use.
  • Heating non-combustible tobacco products allows consumers to draw tobacco aromas compared to traditional cigarettes, while reducing the harmful fumes that are cracked and distilled during the combustion of conventional cigarettes, either by carbon heating or electric heating at 200- At 400 ° C, the tobacco material is not burned, and the flue gas is generated by low temperature cracking. After the flue gas is filtered, the temperature of the flue gas is 45-90 ° C. There is a cooling structure in the cigarette structure of the heated non-burning cigarette products on the market to reduce the temperature of the flue gas and improve the comfort of the suction, but the effect is not very good. Ideally, reducing the temperature of the flue gas is a key technology for heating non-combustible tobacco products.
  • the phase change material is more and more widely used in the filter rod, and is mainly used for the aroma of the aroma substance.
  • CN105595417A discloses a linear composite gel flavor sustained release filter rod, a preparation method thereof and the use thereof, which can effectively increase the fragrance line.
  • the flavoring amount of the filter rod, the uniformity, controllability and stability of the flavoring are rarely reported to have the function of cooling.
  • the phase change material itself is an endothermic reaction, and in the solid-state liquid state process, a large amount of heat needs to be absorbed. This is also a physical cooling process.
  • the present invention has been achieved by the following technical solutions.
  • the invention relates to a preparation method for reducing flue gas temperature low-resistance polylactic acid (PLA) tow filter rod.
  • PLA polylactic acid
  • Polyethylene glycol 400, polyethylene glycol 1000, polyethylene glycol 1500, water and stearic acid are mixed at a mass ratio of 10 to 30:15 to 40:10 to 50:10 to 20:5 to 10 to obtain The phase change material mixture;
  • the aroma substance and the phase change material mixture obtained in the step A are mixed at a mass ratio of 10 to 70:35 to 85, and then added to a sealed water bath, and heated and dissolved at a temperature of 60 to 80 ° C under stirring, and then at a temperature. Incubating at 90 ° C to obtain the phase change material solution containing the aroma substance;
  • step B Spraying the aroma-containing phase change material solution obtained in step B according to the mass ratio of the phase change material solution containing the aroma substance to the filter polylactic acid tow of 1 to 15:8 to 10, using a spray device with a shaped nozzle
  • the filter polylactic acid tow is solidified by a filter rod machine to obtain the low-resistance polylactic acid tow filter rod with reduced flue gas temperature.
  • the aroma substance is one or more aroma substances selected from the group consisting of alcohol extracts, food flavor substances or humectants.
  • the alcohol extract is one or more alcohol extracts selected from the group consisting of plum extract, tree moss extract or licorice extract;
  • the food flavor substance is a a flavoring substance selected from the group consisting of wine, floral, fruity or mint flavoring substances; said humectant being one or more humectants selected from the group consisting of glycerol, propylene glycol or sorbitol.
  • the nozzle shape is formed by one or more lines of phase change material.
  • the shape is a line, a circle, a polygon or an irregular shape.
  • the aroma substance of the phase change material is located at the center of the filter rod.
  • the invention also relates to a low-resistance polylactic acid tow filter rod prepared by the above preparation method for reducing flue gas temperature.
  • Fig. 1 The structure of the low-resistance polylactic acid tow filter rod for reducing the flue gas temperature is shown in Fig. 1.
  • the polylactic acid tow filter rod has a resistance of 300 to 1200 Pa.
  • the polylactic acid tow filter rod has a circumference of from 16.0 to 25.0 mm.
  • the invention combines the addition amount of the phase change material with the low-resistance PLA tow filter rod, and improves the overall suction sound of the cigarette and the heating non-burning cigarette while reducing the flue gas temperature through the triple cooling, thereby improving the consumer's Suction comfort, simple process, suitable for industrial production.
  • the invention is applicable to cigarette filter rods or to heating non-combustible tobacco products.
  • the PLA tow used in the invention has degradability, low heat transfer coefficient, and the flue gas changes from solid to liquid through the phase change material, and is also an endothermic process, which greatly reduces the temperature of the flue gas, and the phase change material acts as a carrier.
  • the carrier after the elution of the flue gas, can release the perfume substance and water encapsulated therein, increase the richness of the smoke and the fragrant substance, and the specific heat capacity of the water is large, which also has a certain effect on the temperature drop.
  • the invention combines the addition amount of the phase change material with the low-resistance PLA tow filter rod, and improves the overall suction sound of the cigarette and the heating non-burning cigarette while reducing the flue gas temperature through the triple cooling, thereby improving the consumer's Suction comfort, simple process, suitable for industrial production.
  • FIG. 1 is a schematic view showing the structure of a low-resistance polylactic acid tow filter rod for reducing flue gas temperature according to the present invention
  • Example 1 Preparation of a low-impedance PLA tow filter rod for reducing flue gas temperature
  • the mixture of the moss extract and the phase change material obtained in the step A was mixed at a mass ratio of 46:54, and then added to a sealed water bath, heated and dissolved at a temperature of 67 ° C under stirring, and then kept at a temperature of 90 ° C. Obtaining the phase change material solution containing the aroma substance;
  • the aroma-containing phase change material solution obtained in step B is sprayed to the filter PLA yarn using a spray device with a shaped nozzle.
  • the bundle is solidified by a plug-bar machine to obtain the low-resistance PLA tow filter rod with reduced flue gas temperature.
  • the filter rod has a suction resistance of 547 Pa and a circumference of 24.2 mm as measured by a conventional suction detection method.
  • the PLA tow filter rod prepared in this example was wound onto the rear end of a conventional tobacco rod using a conventional cigarette winding device to obtain a cigarette sample A; the PLA tow filter rod was wound up and heated using a modified cigarette reeling device. Burning the back end of the rod, the cigarette sample A-1 was obtained.
  • Example 2 Preparation of a low-impedance PLA tow filter rod for reducing flue gas temperature
  • the tangerine flavor flavor and the phase change material mixture obtained in the step A were mixed at a mass ratio of 53:47, then added to a sealed water bath, heated and dissolved at a temperature of 72 ° C under stirring, and then kept at a temperature of 90 ° C. Obtaining the phase change material solution containing the aroma substance;
  • the aroma-containing phase change material solution obtained in step B is sprayed to the filter PLA yarn using a spray device with a shaped nozzle.
  • the bundle is solidified by a plug-bar machine to obtain the low-resistance PLA tow filter rod with reduced flue gas temperature.
  • the suction resistance of the filter rod was 834 Pa and the circumference was 24.2 mm by a conventional suction detection method.
  • the PLA tow filter rod prepared in this example is wound onto the rear end of a conventional tobacco rod using a conventional cigarette winding device to obtain a cigarette sample B; the PLA tow filter rod is wound up and heated using a modified cigarette reeling device. Burning the back end of the rod, the cigarette sample B-1 was obtained.
  • Example 3 Preparation of a low-impedance PLA tow filter rod for reducing flue gas temperature
  • Propylene glycol and sorbitol are mixed at a mass ratio of 1:2 to obtain a flavoring substance, which is further mixed with the phase change material mixture obtained in the step A at a mass ratio of 39:61, and then added to a sealed water bath at a temperature of 65 ° C. The mixture is heated and dissolved under stirring, and then incubated at a temperature of 90 ° C to obtain the phase change material solution containing the aroma substance;
  • step B Spraying the aroma-containing phase change material solution obtained in step B to the filter PLA yarn according to the mass ratio of the phase change material solution containing the aroma substance to the filter PLA tow of 10:10, using a spray device with a shaped nozzle
  • the bundle is solidified by a plug-bar machine to obtain the low-resistance PLA tow filter rod with reduced flue gas temperature.
  • the suction resistance of the filter rod was 1124 Pa and the circumference was 24.2 mm, as measured by a conventional suction detection method.
  • the PLA tow filter rod prepared in this example was wound onto the rear end of a conventional tobacco rod using a conventional cigarette winding device to obtain a cigarette sample C; the PLA tow filter rod was wound up and heated using a modified cigarette reeling device. Burning the back end of the rod, the cigarette sample C-1 was obtained.
  • the cigarette samples prepared in Examples 1-3 were simulated smoking according to the cigarette smoking model specified in the national standard YC/T29-1996, and the temperature at the center of the middle portion of the cigarette filter rod during the cigarette suction using the K-type thermocouple temperature detector was The test results are shown in Table 1 and Table 2.
  • the test data of Table 1 and Table 2 show that the mainstream smoke of tobacco products using the low-impedance PLA filter rod of the invention is lower than the temperature of the control sample, and the phase change material has no burning sensation after adding a certain proportion, and the suction comfort is better. Well, at the same time, the flavor material is released evenly. As the amount of phase change material increases, the temperature of the flue gas decreases more obviously. The reason is that the PLA heat transfer coefficient is very low, the physical heat absorption of the phase change material and the specific heat capacity of the water in the phase change material are large. After the triple temperature drop, the mainstream of the smoke gas is greatly reduced when the mainstream smoke passes. The temperature, the larger the amount of phase change material added, the more obvious the cooling effect. In the present invention, the temperature change function of the phase change material is greater than the function of the fragrance.

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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)
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  • 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

一种用于降低烟气温度低吸阻聚乳酸丝束滤棒的制备方法Preparation method of low-resistance polylactic acid tow filter rod for reducing flue gas temperature
本发明请求以申请日为2018-04-19、发明名称为“一种用于降低烟气温度低吸阻聚乳酸丝束滤棒的制备方法”的中国发明专利申请CN2018103523517为优先权。The present invention claims priority to Chinese Patent Application No. CN2018103523517, the entire disclosure of which is incorporated herein by reference.
【技术领域】[Technical Field]
本发明属于卷烟制品生产技术领域。更具体地，本发明涉及一种用于降低烟气温度低吸阻聚乳酸丝束滤棒的制备方法。The invention belongs to the technical field of cigarette product production. More specifically, the present invention relates to a method for preparing a polylactic acid tow filter rod for reducing smoke temperature and low moisture absorption.
【背景技术】【Background technique】
烟气是通过烟草燃烧与蒸馏裂解过程中释放出来的，烟气在被吸入消费者口腔之前经过过滤嘴过滤，烟气温度会稍有降低，但达到口腔的主流烟气的温度仍能达到35-90℃。烟气温度偏高会带来烟气的刺激和口腔灼烧感，降低了消费者的抽吸的舒适性，卷烟抽吸后端尤为明显。为了控制卷烟烟气的温度，开发设计人员通过增加滤嘴的长度或是应用通风技术，但是这些技术会导致卷烟烟气浓度降低，抽吸费劲等问题，在使用上有了一定的局限性。The flue gas is released through the process of tobacco burning and distillation cracking. The flue gas is filtered through the filter before being sucked into the consumer's mouth. The temperature of the flue gas will be slightly lowered, but the temperature of the mainstream flue gas reaching the oral cavity can still reach 35- 90 ° C. The high temperature of the flue gas will bring about the stimulation of the flue gas and the burning sensation of the mouth, which reduces the comfort of the suction of the consumer, and the rear end of the cigarette smoking is particularly obvious. In order to control the temperature of cigarette smoke, developers have increased the length of the filter or applied ventilation technology, but these techniques can lead to problems such as reduced cigarette smoke concentration, pumping and other problems, and have certain limitations in use.
加热不燃烧烟草制品相对于传统卷烟，能使消费者抽吸到烟草香味，同时减少了常规卷烟在燃烧过程中裂解和蒸馏出的有害烟气成分，是通过碳加热或是电加热在200-400℃条件下，让烟草物质不发生燃烧，经过低温裂解产生烟气。烟气经过过滤后烟气温度在45-90℃，在市面上的加热不燃烧卷烟制品的烟支结构中都存在降温结构，来降低烟气温度，提高抽吸的舒适性，但效果不是很理想，降低烟气温度是加热不燃烧烟草制品的一项关键性技术。Heating non-combustible tobacco products allows consumers to draw tobacco aromas compared to traditional cigarettes, while reducing the harmful fumes that are cracked and distilled during the combustion of conventional cigarettes, either by carbon heating or electric heating at 200- At 400 ° C, the tobacco material is not burned, and the flue gas is generated by low temperature cracking. After the flue gas is filtered, the temperature of the flue gas is 45-90 ° C. There is a cooling structure in the cigarette structure of the heated non-burning cigarette products on the market to reduce the temperature of the flue gas and improve the comfort of the suction, but the effect is not very good. Ideally, reducing the temperature of the flue gas is a key technology for heating non-combustible tobacco products.
相变材料在滤棒中应用越来越广泛主要用于香味物质的载香， CN105595417A公开了一种线状复合凝胶香味缓释滤棒及其制备方法与它的用途，能够有效增加香线滤棒的加香量，加香的均匀性、可控性和稳定性，鲜有报道有降温的功能，相变材料本身就是一个吸热反应，固态变液态过程中，需要吸收大量的热量，这也是一个物理降温过程。The phase change material is more and more widely used in the filter rod, and is mainly used for the aroma of the aroma substance. CN105595417A discloses a linear composite gel flavor sustained release filter rod, a preparation method thereof and the use thereof, which can effectively increase the fragrance line. The flavoring amount of the filter rod, the uniformity, controllability and stability of the flavoring are rarely reported to have the function of cooling. The phase change material itself is an endothermic reaction, and in the solid-state liquid state process, a large amount of heat needs to be absorbed. This is also a physical cooling process.
因此，本发明人在现有的技术的基础，通过大量实验研究和总结，终于完成了本发明。Therefore, the inventors have finally completed the present invention on the basis of the prior art through a large number of experimental studies and summaries.
【发明内容】[Summary of the Invention]
[要解决的技术问题][Technical problems to be solved]
本发明的目的是提供一种用于降低烟气温度低吸阻聚乳酸丝束滤棒的制备方法。It is an object of the present invention to provide a method for preparing a polylactic acid tow filter rod for reducing flue gas temperature and low resistance.
[技术方案][Technical solutions]
本发明是通过下述技术方案实现的。The present invention has been achieved by the following technical solutions.
本发明涉及一种用于降低烟气温度低吸阻聚乳酸(PLA)丝束滤棒的制备方法。The invention relates to a preparation method for reducing flue gas temperature low-resistance polylactic acid (PLA) tow filter rod.
该制备方法步骤如下：The steps of the preparation method are as follows:
A、制备相变材料混合物A. Preparation of phase change material mixture
将聚乙二醇400、聚乙二醇1000、聚乙二醇1500、水与硬脂酸按照质量比10～30：15～40：10～50：10～20：5～10进行混合，得到所述的相变材料混合物；Polyethylene glycol 400, polyethylene glycol 1000, polyethylene glycol 1500, water and stearic acid are mixed at a mass ratio of 10 to 30:15 to 40:10 to 50:10 to 20:5 to 10 to obtain The phase change material mixture;
B、制备含有香味物质的相变材料B. Preparation of phase change materials containing aroma substances
让香味物质与步骤A得到的相变材料混合物按照质量比10～70：35～85进行混合，然后加到密封水浴中，在温度60℃～80℃与搅拌的条件下加热溶解，再在温度90℃下保温，得到所述的含有香味物质的相变材料溶液；The aroma substance and the phase change material mixture obtained in the step A are mixed at a mass ratio of 10 to 70:35 to 85, and then added to a sealed water bath, and heated and dissolved at a temperature of 60 to 80 ° C under stirring, and then at a temperature. Incubating at 90 ° C to obtain the phase change material solution containing the aroma substance;
C、制备缓释香味滤棒C, preparing a slow release flavor filter rod
按照含有香味物质的相变材料溶液与滤嘴聚乳酸丝束的质量比为1～15：8～10，使用带形状喷嘴的喷洒装置，将步骤B得到的含有香味物质的相变材料溶液喷洒到滤嘴聚乳酸丝束上，通过滤棒机固化成型，得到所述的降低烟气温度低吸阻聚乳酸丝束滤棒。Spraying the aroma-containing phase change material solution obtained in step B according to the mass ratio of the phase change material solution containing the aroma substance to the filter polylactic acid tow of 1 to 15:8 to 10, using a spray device with a shaped nozzle The filter polylactic acid tow is solidified by a filter rod machine to obtain the low-resistance polylactic acid tow filter rod with reduced flue gas temperature.
根据本发明的一种优选实施方式，所述的香味物质是一种或多种选自 醇提物、食品风味物质或保润剂的香味物质。According to a preferred embodiment of the invention, the aroma substance is one or more aroma substances selected from the group consisting of alcohol extracts, food flavor substances or humectants.
根据本发明的另一种优选实施方式，所述的醇提物是一种或多种选自梅子浸膏、树苔浸膏或甘草浸膏的醇提物；所述的食品风味物质是一种或多种选自酒香、花香、果香或薄荷香风味物质的风味物质；所述的保润剂是一种或多种选自丙三醇、丙二醇或山梨醇的保润剂。According to another preferred embodiment of the present invention, the alcohol extract is one or more alcohol extracts selected from the group consisting of plum extract, tree moss extract or licorice extract; the food flavor substance is a a flavoring substance selected from the group consisting of wine, floral, fruity or mint flavoring substances; said humectant being one or more humectants selected from the group consisting of glycerol, propylene glycol or sorbitol.
根据本发明的另一种优选实施方式，所述的喷嘴形状由一条或多条相变材料线构成。According to another preferred embodiment of the invention, the nozzle shape is formed by one or more lines of phase change material.
根据本发明的另一种优选实施方式，所述的形状是线、圆形、多边形或不规则形状。According to another preferred embodiment of the invention, the shape is a line, a circle, a polygon or an irregular shape.
根据本发明的另一种优选实施方式，所述的相变材料的香味物质位于滤棒的中心。According to another preferred embodiment of the invention, the aroma substance of the phase change material is located at the center of the filter rod.
本发明还涉及上述制备方法制备得到的降低烟气温度低吸阻聚乳酸丝束滤棒。The invention also relates to a low-resistance polylactic acid tow filter rod prepared by the above preparation method for reducing flue gas temperature.
所述的降低烟气温度低吸阻聚乳酸丝束滤棒的结构参见附图1。The structure of the low-resistance polylactic acid tow filter rod for reducing the flue gas temperature is shown in Fig. 1.
根据本发明的一种优选实施方式，所述聚乳酸丝束滤棒的吸阻是300～1200Pa。According to a preferred embodiment of the present invention, the polylactic acid tow filter rod has a resistance of 300 to 1200 Pa.
根据本发明的另一种优选实施方式，所述聚乳酸丝束滤棒的圆周长是16.0～25.0mm。According to another preferred embodiment of the present invention, the polylactic acid tow filter rod has a circumference of from 16.0 to 25.0 mm.
本发明通过增加相变材料的添加量与低吸阻PLA丝束滤棒相结合，通过三重降温改善了卷烟以及加热不燃烧卷烟整体抽吸口感的同时又降低烟气温度，提升了消费者的抽吸舒适性，工艺流程简单，适合于工业化生产。The invention combines the addition amount of the phase change material with the low-resistance PLA tow filter rod, and improves the overall suction sound of the cigarette and the heating non-burning cigarette while reducing the flue gas temperature through the triple cooling, thereby improving the consumer's Suction comfort, simple process, suitable for industrial production.
[有益效果][Beneficial effect]
本发明的有益效果是：The beneficial effects of the invention are:
本发明适用于卷烟滤棒或者加热不燃烧烟草制品。本发明使用的PLA丝束具有可降解性，传热系数低，而且烟气经过相变材料由固态变为液态也是吸热过程，极大的降低了烟气温度，同时相变材料作为载香载体，经过烟气的洗脱可使包裹于其中的香料物质和水释放，增加烟气香物质的丰富性，而且水的比热容较大，对降温也有一定的作用。本发明通过增加相变材料的添加量与低吸阻PLA丝束滤棒相结合，通过三重降温改善了卷烟 以及加热不燃烧卷烟整体抽吸口感的同时又降低烟气温度，提升了消费者的抽吸舒适性，工艺流程简单，适合于工业化生产。The invention is applicable to cigarette filter rods or to heating non-combustible tobacco products. The PLA tow used in the invention has degradability, low heat transfer coefficient, and the flue gas changes from solid to liquid through the phase change material, and is also an endothermic process, which greatly reduces the temperature of the flue gas, and the phase change material acts as a carrier. The carrier, after the elution of the flue gas, can release the perfume substance and water encapsulated therein, increase the richness of the smoke and the fragrant substance, and the specific heat capacity of the water is large, which also has a certain effect on the temperature drop. The invention combines the addition amount of the phase change material with the low-resistance PLA tow filter rod, and improves the overall suction sound of the cigarette and the heating non-burning cigarette while reducing the flue gas temperature through the triple cooling, thereby improving the consumer's Suction comfort, simple process, suitable for industrial production.
【附图说明】[Description of the Drawings]
图1是本发明降低烟气温度低吸阻聚乳酸丝束滤棒的结构示意图；1 is a schematic view showing the structure of a low-resistance polylactic acid tow filter rod for reducing flue gas temperature according to the present invention;
图中：In the picture:
1-成形纸；2-PLA丝束；3-相变材料。1-formed paper; 2-PLA tow; 3-phase change material.
【具体实施方式】【detailed description】
通过下述实施例将能够更好地理解本发明。The invention will be better understood by the following examples.
实施例1：制备降低烟气温度低吸阻PLA丝束滤棒Example 1: Preparation of a low-impedance PLA tow filter rod for reducing flue gas temperature
该实施例的实施步骤如下：The implementation steps of this embodiment are as follows:
A、制备相变材料混合物A. Preparation of phase change material mixture
将聚乙二醇400、聚乙二醇1000、聚乙二醇1500、水与硬脂酸按照质量比15：22：46：11：6进行混合，得到所述的相变材料混合物；Mixing polyethylene glycol 400, polyethylene glycol 1000, polyethylene glycol 1500, water and stearic acid at a mass ratio of 15:22:46:11:6 to obtain the phase change material mixture;
B、制备含有香味物质的相变材料B. Preparation of phase change materials containing aroma substances
把树苔提取物与步骤A得到的相变材料混合物按照质量比46：54进行混合，然后加到密封水浴中，在温度67℃与搅拌的条件下加热溶解，再在温度90℃下保温，得到所述的含有香味物质的相变材料溶液；The mixture of the moss extract and the phase change material obtained in the step A was mixed at a mass ratio of 46:54, and then added to a sealed water bath, heated and dissolved at a temperature of 67 ° C under stirring, and then kept at a temperature of 90 ° C. Obtaining the phase change material solution containing the aroma substance;
C、制备缓释香味滤棒C, preparing a slow release flavor filter rod
按照含有香味物质的相变材料溶液与滤嘴PLA丝束的质量比为2：7，使用带形状喷嘴的喷洒装置，将步骤B得到的含有香味物质的相变材料溶液喷洒到滤嘴PLA丝束上，通过滤棒机固化成型，得到所述的降低烟气温度低吸阻PLA丝束滤棒。采用常规吸助检测方法检测，该滤棒的吸阻是547Pa，圆周为24.2mm。According to the mass ratio of the aroma-containing phase change material solution to the filter PLA tow of 2:7, the aroma-containing phase change material solution obtained in step B is sprayed to the filter PLA yarn using a spray device with a shaped nozzle. The bundle is solidified by a plug-bar machine to obtain the low-resistance PLA tow filter rod with reduced flue gas temperature. The filter rod has a suction resistance of 547 Pa and a circumference of 24.2 mm as measured by a conventional suction detection method.
使用通常的卷烟卷接设备将该实施例制备的PLA丝束滤棒卷接到常规烟条后端，得到卷烟样品A；使用改装过卷烟卷接设备将PLA丝束滤棒卷接到加热不燃烧烟条后端，得到卷烟样品A-1。The PLA tow filter rod prepared in this example was wound onto the rear end of a conventional tobacco rod using a conventional cigarette winding device to obtain a cigarette sample A; the PLA tow filter rod was wound up and heated using a modified cigarette reeling device. Burning the back end of the rod, the cigarette sample A-1 was obtained.
实施例2：制备降低烟气温度低吸阻PLA丝束滤棒Example 2: Preparation of a low-impedance PLA tow filter rod for reducing flue gas temperature
该方法的实施步骤如下：The implementation steps of the method are as follows:
A、制备相变材料混合物A. Preparation of phase change material mixture
将聚乙二醇400、聚乙二醇1000、聚乙二醇1500、水与硬脂酸按照质量比21：24：39：9：7进行混合，得到所述的相变材料混合物；Mixing polyethylene glycol 400, polyethylene glycol 1000, polyethylene glycol 1500, water and stearic acid according to a mass ratio of 21:24:39:9:7 to obtain the phase change material mixture;
B、制备含有香味物质的相变材料B. Preparation of phase change materials containing aroma substances
把陈皮薄荷风味香精与步骤A得到的相变材料混合物按照质量比53：47进行混合，然后加到密封水浴中，在温度72℃与搅拌的条件下加热溶解，再在温度90℃下保温，得到所述的含有香味物质的相变材料溶液；The tangerine flavor flavor and the phase change material mixture obtained in the step A were mixed at a mass ratio of 53:47, then added to a sealed water bath, heated and dissolved at a temperature of 72 ° C under stirring, and then kept at a temperature of 90 ° C. Obtaining the phase change material solution containing the aroma substance;
C、制备缓释香味滤棒C, preparing a slow release flavor filter rod
按照含有香味物质的相变材料溶液与滤嘴PLA丝束的质量比为5：10，使用带形状喷嘴的喷洒装置，将步骤B得到的含有香味物质的相变材料溶液喷洒到滤嘴PLA丝束上，通过滤棒机固化成型，得到所述的降低烟气温度低吸阻PLA丝束滤棒。采用常规吸助检测方法检测，该滤棒的吸阻是834Pa，圆周为24.2mm。According to the mass ratio of the aroma-containing phase change material solution to the filter PLA tow of 5:10, the aroma-containing phase change material solution obtained in step B is sprayed to the filter PLA yarn using a spray device with a shaped nozzle. The bundle is solidified by a plug-bar machine to obtain the low-resistance PLA tow filter rod with reduced flue gas temperature. The suction resistance of the filter rod was 834 Pa and the circumference was 24.2 mm by a conventional suction detection method.
使用通常的卷烟卷接设备将该实施例制备的PLA丝束滤棒卷接到常规烟条后端，得到卷烟样品B；使用改装过卷烟卷接设备将PLA丝束滤棒卷接到加热不燃烧烟条后端，得到卷烟样品B-1。The PLA tow filter rod prepared in this example is wound onto the rear end of a conventional tobacco rod using a conventional cigarette winding device to obtain a cigarette sample B; the PLA tow filter rod is wound up and heated using a modified cigarette reeling device. Burning the back end of the rod, the cigarette sample B-1 was obtained.
实施例3：制备降低烟气温度低吸阻PLA丝束滤棒Example 3: Preparation of a low-impedance PLA tow filter rod for reducing flue gas temperature
该方法的实施步骤如下：The implementation steps of the method are as follows:
A、制备相变材料混合物A. Preparation of phase change material mixture
将聚乙二醇400、聚乙二醇1000、聚乙二醇1500、水与硬脂酸按照质量比23：14：46：12：5进行混合，得到所述的相变材料混合物；Mixing polyethylene glycol 400, polyethylene glycol 1000, polyethylene glycol 1500, water and stearic acid according to a mass ratio of 23:14:46:12:5 to obtain the phase change material mixture;
B、制备含有香味物质的相变材料B. Preparation of phase change materials containing aroma substances
丙二醇与山梨醇按照质量比1：2进行混合得到一种香味物质，它再与步骤A得到的相变材料混合物按照质量比39：61进行混合，然后加到密封水浴中，在温度65℃与搅拌的条件下加热溶解，再在温度90℃下保温，得到所述的含有香味物质的相变材料溶液；Propylene glycol and sorbitol are mixed at a mass ratio of 1:2 to obtain a flavoring substance, which is further mixed with the phase change material mixture obtained in the step A at a mass ratio of 39:61, and then added to a sealed water bath at a temperature of 65 ° C. The mixture is heated and dissolved under stirring, and then incubated at a temperature of 90 ° C to obtain the phase change material solution containing the aroma substance;
C、制备缓释香味滤棒C, preparing a slow release flavor filter rod
按照含有香味物质的相变材料溶液与滤嘴PLA丝束的质量比为10：10，使用带形状喷嘴的喷洒装置，将步骤B得到的含有香味物质的相变材料溶液喷洒到滤嘴PLA丝束上，通过滤棒机固化成型，得到所述的降低烟气温 度低吸阻PLA丝束滤棒。采用常规吸助检测方法检测，该滤棒的吸阻是1124Pa，圆周为24.2mm。Spraying the aroma-containing phase change material solution obtained in step B to the filter PLA yarn according to the mass ratio of the phase change material solution containing the aroma substance to the filter PLA tow of 10:10, using a spray device with a shaped nozzle The bundle is solidified by a plug-bar machine to obtain the low-resistance PLA tow filter rod with reduced flue gas temperature. The suction resistance of the filter rod was 1124 Pa and the circumference was 24.2 mm, as measured by a conventional suction detection method.
使用通常的卷烟卷接设备将该实施例制备的PLA丝束滤棒卷接到常规烟条后端，得到卷烟样品C；使用改装过卷烟卷接设备将PLA丝束滤棒卷接到加热不燃烧烟条后端，得到卷烟样品C-1。The PLA tow filter rod prepared in this example was wound onto the rear end of a conventional tobacco rod using a conventional cigarette winding device to obtain a cigarette sample C; the PLA tow filter rod was wound up and heated using a modified cigarette reeling device. Burning the back end of the rod, the cigarette sample C-1 was obtained.
实施例1-3制备的卷烟样品按照国家标准YC/T29-1996规定的卷烟抽吸模型进行模拟吸烟，使用K型热电偶温度检测仪在卷烟抽吸时在卷烟滤棒中段中心位置的温度，其检测结果见表1与表2。The cigarette samples prepared in Examples 1-3 were simulated smoking according to the cigarette smoking model specified in the national standard YC/T29-1996, and the temperature at the center of the middle portion of the cigarette filter rod during the cigarette suction using the K-type thermocouple temperature detector was The test results are shown in Table 1 and Table 2.
表1：常规卷烟主流烟气温度检测结果Table 1: Mainstream smoke temperature test results of conventional cigarettes
样品sample 烟气最低温度Minimum temperature of smoke 烟气最高温度Maximum temperature of smoke 感官评吸Sensory evaluation
对照样品Control sample 37.4℃37.4 ° C 60.6℃60.6°C 后面几口口腔有灼烧感There are burning sensations in the back mouth
卷烟ACigarette A 36.4℃36.4 ° C 47.5℃47.5 ° C 口腔较舒适，无灼烧感，风味物质释放均匀The mouth is more comfortable, no burning, and the flavor is released evenly
卷烟BCigarette B 36.2℃36.2 ° C 43.2℃43.2 ° C 口腔较舒适，无灼烧感，风味物质释放均匀The mouth is more comfortable, no burning, and the flavor is released evenly
卷烟CCigarette C 35.5℃35.5 ° C 42.1℃42.1 ° C 口腔较舒适，无灼烧感，烟气润感较好The mouth is more comfortable, no burning, and the smoke is better.
表2：加热不燃烧卷烟主流烟气温度检测结果Table 2: Mainstream smoke temperature test results for heating non-burning cigarettes
样品sample 烟气最低温度Minimum temperature of smoke 烟气最高温度Maximum temperature of smoke 感官评吸Sensory evaluation
对照样品Control sample 43.5℃43.5 ° C 67.2℃67.2 ° C 后面几口口腔有灼烧感There are burning sensations in the back mouth
卷烟A-1Cigarette A-1 38.4℃38.4 ° C 51..3℃51..3°C 口腔较舒适，稍有灼烧感，风味物质释放均匀The mouth is more comfortable, slightly burning, and the flavor is released evenly
卷烟B-1Cigarette B-1 37.5℃37.5 ° C 47.4℃47.4°C 口腔较舒适，无灼烧感，风味物质释放均匀The mouth is more comfortable, no burning, and the flavor is released evenly
卷烟C-1Cigarette C-1 36.3℃36.3 ° C 42.6℃42.6 ° C 口腔较舒适，无灼烧感，烟气润感较好The mouth is more comfortable, no burning, and the smoke is better.
表1与表2检测数据表明，使用本发明低吸阻PLA滤棒的烟草制品主流烟气比对照样品温度低，相变材料在添加一定比例后口腔并无灼烧感，抽吸舒适性较好，同时风味物质释放均匀，随着相变材料添加量的增大，烟气温度降低越明显。究其原因，PLA传热系数很低，相变材料的物理吸热及相变材料物中水的比热容较大，经过三重降温，在主流烟气经过时，极大的降低了烟气的主流温度，相变材料的添加量越大，降温效果越明显，在本发明中相变材料降温功能大于载香的功能。The test data of Table 1 and Table 2 show that the mainstream smoke of tobacco products using the low-impedance PLA filter rod of the invention is lower than the temperature of the control sample, and the phase change material has no burning sensation after adding a certain proportion, and the suction comfort is better. Well, at the same time, the flavor material is released evenly. As the amount of phase change material increases, the temperature of the flue gas decreases more obviously. The reason is that the PLA heat transfer coefficient is very low, the physical heat absorption of the phase change material and the specific heat capacity of the water in the phase change material are large. After the triple temperature drop, the mainstream of the smoke gas is greatly reduced when the mainstream smoke passes. The temperature, the larger the amount of phase change material added, the more obvious the cooling effect. In the present invention, the temperature change function of the phase change material is greater than the function of the fragrance.

Claims (9)

  1. 一种用于降低烟气温度低吸阻聚乳酸丝束滤棒的制备方法，其特征在于该制备方法步骤如下：A preparation method for reducing flue gas temperature low-resistance polylactic acid tow filter rod, characterized in that the preparation method has the following steps:
    A、制备相变材料混合物A. Preparation of phase change material mixture
    将聚乙二醇400、聚乙二醇1000、聚乙二醇1500、水与硬脂酸按照质量比10～30：15～40：10～50：10～20：5～10进行混合，得到所述的相变材料混合物；Polyethylene glycol 400, polyethylene glycol 1000, polyethylene glycol 1500, water and stearic acid are mixed at a mass ratio of 10 to 30:15 to 40:10 to 50:10 to 20:5 to 10 to obtain The phase change material mixture;
    B、制备含有香味物质的相变材料B. Preparation of phase change materials containing aroma substances
    让香味物质与步骤A得到的相变材料混合物按照质量比10～70：35～85进行混合，然后加到密封水浴中，在温度60℃～80℃与搅拌的条件下加热溶解，再在温度90℃下保温，得到所述的含有香味物质的相变材料溶液The aroma substance and the phase change material mixture obtained in the step A are mixed at a mass ratio of 10 to 70:35 to 85, and then added to a sealed water bath, and heated and dissolved at a temperature of 60 to 80 ° C under stirring, and then at a temperature. Incubating at 90 ° C to obtain the phase change material solution containing the aroma substance
    C、制备缓释香味滤棒C, preparing a slow release flavor filter rod
    按照含有香味物质的相变材料溶液与滤嘴聚乳酸丝束的质量比为1～15：8～10，使用带形状喷嘴的喷洒装置，将步骤B得到的含有香味物质的相变材料溶液喷洒到滤嘴聚乳酸丝束上，通过滤棒机固化成型，得到所述的降低烟气温度低吸阻聚乳酸丝束滤棒。Spraying the aroma-containing phase change material solution obtained in step B according to the mass ratio of the phase change material solution containing the aroma substance to the filter polylactic acid tow of 1 to 15:8 to 10, using a spray device with a shaped nozzle The filter polylactic acid tow is solidified by a filter rod machine to obtain the low-resistance polylactic acid tow filter rod with reduced flue gas temperature.
  2. 根据权利要求1所述的制备方法，其特征在于在步骤B中，所述的香味物质是一种或多种选自醇提物、食品风味物质或保润剂的香味物质。The preparation method according to claim 1, wherein in the step B, the aroma substance is one or more aroma substances selected from the group consisting of an alcohol extract, a food flavor substance, and a humectant.
  3. 根据权利要求2所述的制备方法，其特征在于所述的醇提物是一种或多种选自梅子浸膏、树苔浸膏或甘草浸膏的醇提物；所述的食品风味物质是一种或多种选自酒香、花香、果香或薄荷香风味物质的风味物质；所述的保润剂是一种或多种选自丙三醇、丙二醇或山梨醇的保润剂。The preparation method according to claim 2, wherein the alcohol extract is one or more alcohol extracts selected from plum extract, tree moss extract or licorice extract; Is a flavoring substance selected from the group consisting of wine, floral, fruity or mint flavoring substances; the humectant is one or more sizing agents selected from the group consisting of glycerol, propylene glycol or sorbitol .
  4. 根据权利要求1所述的制备方法，其特征在于在步骤C中，所述的喷嘴形状由一条或多条相变材料线构成。The preparation method according to claim 1, wherein in the step C, the nozzle shape is composed of one or more phase change material wires.
  5. 根据权利要求4所述的制备方法，其特征在于所述的形状是线、圆形、多边形或不规则形状。The preparation method according to claim 4, wherein the shape is a line, a circle, a polygon or an irregular shape.
  6. 根据权利要求1所述的制备方法，其特征在于步骤B中，所述的相 变材料的香味物质位于滤棒的中心。The preparation method according to claim 1, wherein in step B, the aroma substance of the phase change material is located at the center of the filter rod.
  7. 根据权利要求1-6中任一项权利要求所述制备方法制备得到的降低烟气温度低吸阻聚乳酸丝束滤棒。The low-resistance polylactic acid tow filter rod prepared by the preparation method according to any one of claims 1 to 6.
  8. 根据权利要求1所述的制备方法，其特征在于所述聚乳酸丝束滤棒的吸阻是300～1200Pa。The preparation method according to claim 1, wherein the polylactic acid tow filter rod has a resistance of 300 to 1200 Pa.
  9. 根据权利要求1所述的制备方法，其特征在于所述聚乳酸丝束滤棒的圆周长是16.0～25.0mm。The preparation method according to claim 1, wherein the polylactic acid tow filter rod has a circumference of from 16.0 to 25.0 mm.
PCT/CN2019/083184 2018-04-19 2019-04-18 Method for preparing low-suction-resistance polylactic acid tow filter rod used for reducing temperature of cigarette vapor WO2019201290A1 (en)

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RU2020137744A RU2761996C1 (en) 2018-04-19 2019-04-18 Method for manufacturing filtering rods from a pla bundle with low resistance to draw for reducing the smoking temperature
JP2020558528A JP6932859B2 (en) 2018-04-19 2019-04-18 How to prepare a low inhalation resistance polylactic acid long fiber bundle filter rod to reduce the temperature of tobacco smoke
GB2016466.1A GB2587508B (en) 2018-04-19 2019-04-18 A Method for Preparing PLA Tow Filter Rods with Low Draw Resistance for Reducing the Temperature of Smoke
KR1020207033208A KR102251658B1 (en) 2018-04-19 2019-04-18 Manufacturing method of low suction resistance polylactic acid tow filter rod for lowering smoke temperature

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