阅读说明：本技术 一种载香降温滤嘴棒及其制备方法 (Fragrance-carrying cooling filter tip rod and preparation method thereof ) 是由 邵全 周涛 李红娟 李雕 丁发 于 2021-07-26 设计创作，主要内容包括：一种载香降温滤嘴棒,包括成型纸层、改性聚乳酸薄膜内芯；所述成形纸层设置为筒状结构；改性聚乳酸薄膜内芯设置在成形纸层所围成的空腔内；所述改性聚乳酸薄膜内芯包括载香纸、改性聚乳酸薄膜、热敏性载香缓释微胶囊；本中空滤嘴棒对烟气温度的降低效果增强了10％。热敏性载香缓释微胶囊释放的香气弥补了过滤后烟气香味的不足或者改善卷烟自身香气,增加特殊香味,使得烟香更加舒适,协调。(A fragrant cooling filter tip comprises a forming paper layer and a modified polylactic acid film inner core; the forming paper layer is of a cylindrical structure; the modified polylactic acid film inner core is arranged in a cavity surrounded by the forming paper layer; the modified polylactic acid film inner core comprises fragrance-carrying paper, a modified polylactic acid film and a thermosensitive fragrance-carrying slow-release microcapsule; the reduction effect of the hollow filter tip on the smoke temperature is enhanced by 10 percent. The aroma released by the thermosensitive aroma-carrying slow-release microcapsule makes up the deficiency of the aroma of the filtered smoke or improves the aroma of the cigarette, and adds special aroma, so that the cigarette aroma is more comfortable and harmonious.)

1. A fragrance-carrying cooling filter tip is characterized by comprising a forming paper layer (1) and a modified polylactic acid film inner core (2); the formed paper layer (1) is of a cylindrical structure; the modified polylactic acid film inner core (2) is arranged in a cavity surrounded by the forming paper layer (1); the modified polylactic acid film inner core (2) comprises incense-carrying paper (4), a modified polylactic acid film (5) and a thermosensitive incense-carrying slow-release microcapsule (6);

the fragrance-carrying paper (4) and the modified polylactic acid film (5) are adhered through an adhesive layer (7); the thermosensitive fragrance-carrying slow-release microcapsule (6) is sprayed and arranged on the surface of the fragrance-carrying paper (4);

the heat-sensitive aroma-carrying slow-release microcapsule (6) comprises a porous adsorption inner core (8), a porous adsorption outer layer (9) and a heat-sensitive sealing layer (3);

the porous adsorption outer layer (9) is wrapped outside the porous adsorption inner core (8); the heat-sensitive sealing layer (3) is arranged outside the porous adsorption outer layer (9);

the pore channels of the porous adsorption inner core (8) are adsorbed with inner-layer spices; the pore channels and the surface of the porous adsorption outer layer (9) are adsorbed with outer layer perfume.

2. The filter tip rod of claim 1, wherein the modified polylactic acid film inner core (2) is arranged in a folding ruler-shaped structure and is arranged in a cavity surrounded by the forming paper layer (3) in a surrounding way.

3. The filter rod of claim 1, wherein the modified polylactic acid film (5) has a thickness of 0.05mm to 0.1 mm; the thickness of the fragrance-carrying paper (4) is 0.15-0.25 mm.

4. The filter tip of claim 1, wherein the porous adsorption inner core (8) is made of one or more of kaolin, attapulgite, diatomite, porous rod-shaped magnesium oxide and porous rod-shaped zinc oxide.

5. A fragrance-carrying cooling filter rod as claimed in claim 1, wherein the particle size of the heat-sensitive fragrance-carrying slow-release microcapsules (6) is 50 μm to 300 μm; the particle size of the porous adsorption inner core (8) is 20-200 μm.

6. The filter rod of claim 1, wherein the inner spice is water-soluble essence spice or flavored plant powder spice; the water-soluble essence and spice is one or more of litchi extract, blueberry extract, green tea extract, dried orange peel extract and fructus phyllanthi extract; the flavoring plant powder spice is one or more of radix Puerariae, pericarpium Citri Tangerinae, Glycyrrhrizae radix, fructus Phyllanthi, fructus Jujubae, and red tobacco powder; the outer layer perfume is one or more of tobacco extract, purple branch rose essential oil, cocoa extract, and lemon oil.

7. The filter rod of claim 6, wherein the grain size of the flavoring plant powder spice is 1nm-1000 nm.

8. The aroma-carrying cooling filter rod as claimed in claim 1, wherein the method for manufacturing the heat-sensitive aroma-carrying slow-release microcapsule (6) comprises the following steps:

s1, calcining the porous adsorption inner core (8) and then grinding; weighing a certain amount of inner-layer perfume, dispersing and dissolving the inner-layer perfume in 75% ethanol solution together, ultrasonically stirring for 15-25 minutes, standing and soaking for 3-5 hours to obtain a perfumed core material suspension, centrifuging the perfumed core material suspension, and vacuum-drying at normal temperature for 10 hours to form a porous adsorption inner core (8);

s2, mixing the aromatized core material powder with the chitosan solution, and stirring for 2-5 hours at normal temperature; naturally settling after stirring, pouring out the top liquid, reserving the bottom suspension, and then freeze-drying to form a porous adsorption outer layer (9) on the surface of the porous adsorption inner core (8) to obtain core-shell powder particles;

s3, atomizing and spraying outer-layer spice to the surface of the core-shell perfuming powder particles through a particle flavoring machine to obtain compound fragrance type core-shell powder particles;

s4, mixing and stirring the compound fragrance type core-shell powder particles obtained in the step S3 with ethanol solution of polyethylene glycol in a certain proportion, and then carrying out atomization, drying and granulation to form a heat-sensitive sealing layer (3) and obtain the heat-sensitive fragrance-carrying slow-release microcapsule (6).

9. The filter rod as claimed in claim 8, wherein the heat-sensitive slow-release microcapsules are formed, and the step S4 employs PEG 1000-12000 as the material of the heat-sensitive sealing layer (3).

10. The filter rod of claim 1, wherein the preparation method of the filter rod comprises the following steps: compounding the modified polylactic acid film inner core and the fragrance-carrying paper (4) together through an adhesive layer (7) to form a film-paper composite material, and attaching the thermosensitive fragrance-carrying slow-release microcapsules (6) to the surface of the fragrance-carrying paper (4) in a coating mode; the film paper composite material with the thermosensitive fragrance-carrying slow-release microcapsules (6) is folded, gathered, formed in a bundling manner, has a longitudinal multi-channel structure, and then is wrapped by forming paper to form a cylindrical filter tip rod.

Technical Field

The invention relates to the technical field of tobacco materials, in particular to an aroma-carrying cooling filter tip rod.

Background

The cigarette is heated by an external heat source, and the tobacco product reaches the atomizing temperature at the temperature of 250-350 ℃ to provide the smoking feeling of the cigarette for consumers. The traditional tobacco is cracked through high-temperature combustion, and a series of uncontrollable physical and chemical changes are promoted, so that the harmful gas components in the tobacco are difficult to effectively control. In comparison, the cigarette which is not burnt is heated through low temperature heating instead of burning, the cigarette is heated through the set temperature, the heating process is relatively controllable, the uncontrollable reaction is avoided, and the harmful substance components in the tobacco can be greatly reduced.

The cigarette bullet part of the cigarette which is not burnt after being heated has a small size and a filter rod section has a short length, so that the smoke temperature is too high, and the smoking feeling of consumers is influenced. How to reduce the smoke temperature of the filter rod section of the novel tobacco product becomes a problem which is urgently needed to be solved by various big tobacco companies and cigarette bullet manufacturers. On one hand, the existing cooling material can not meet the requirements of tobacco materials, and on the other hand, the existing cooling material is limited by a filter stick forming technology, so that not all materials can be smoothly added into a novel tobacco filter stick section, and the fragrance of smoke is reduced in the filtering process, thereby influencing the smoking quality.

Disclosure of Invention

In order to solve the problems, the invention provides the aroma-carrying cooling filter tip rod pipe, thereby effectively solving the problems in the prior art.

In order to achieve the purpose, the invention adopts the technical scheme that:

a fragrant cooling filter tip comprises a forming paper layer 1 and a modified polylactic acid film inner core 2; the formed paper layer 3 is of a cylindrical structure; the modified polylactic acid film inner core 2 is arranged in a cavity surrounded by the forming paper layer 3; the modified polylactic acid film inner core 2 comprises fragrance-carrying paper 4, a modified polylactic acid film 5 and a thermosensitive fragrance-carrying slow-release microcapsule 6;

the toilet paper 4 and the modified polylactic acid film 5 are adhered through an adhesive layer 7; the thermosensitive fragrance-carrying slow-release microcapsule 6 is sprayed on the surface of the fragrance-carrying paper 4;

the heat-sensitive aroma-carrying slow-release microcapsule 6 comprises a porous adsorption inner core 8, a porous adsorption outer layer 9 and a heat-sensitive sealing layer 10;

the porous adsorption outer layer 9 is wrapped outside the porous adsorption inner core 8; the heat-sensitive sealing layer 10 is arranged outside the porous adsorption outer layer 9;

the pore channels of the porous adsorption inner core 8 are adsorbed with inner-layer spices; the pore channels and the surface of the porous adsorption outer layer 9 are adsorbed with outer layer perfume.

Further, the preparation method of the thermosensitive fragrance-carrying slow-release microcapsule 6 comprises the following steps:

s1, calcining the porous adsorption inner core 8 and then grinding; weighing a certain amount of inner-layer perfume, dispersing and dissolving the inner-layer perfume in a 75% ethanol solution, jointly ultrasonically stirring for 15-25 minutes, standing and soaking for 3-5 hours to obtain a perfumed core material suspension, centrifuging the perfumed core material suspension, and vacuum-drying at normal temperature for 10 hours to form a porous adsorption inner core 8;

s2, mixing the aromatized core material powder with the chitosan solution, and stirring for 2-5 hours at normal temperature; naturally settling after stirring, pouring out the top liquid, reserving the bottom suspension, then freeze-drying, and forming a porous adsorption outer layer 9 on the surface of the porous adsorption inner core 8 to obtain core-shell powder particles;

s3, atomizing and spraying outer-layer spice to the surface of the core-shell perfuming powder particles through a particle flavoring machine to obtain compound fragrance type core-shell powder particles;

s4, mixing and stirring the compound fragrance type core-shell powder particles obtained in the step S3 with ethanol solution of polyethylene glycol in a certain proportion, and then carrying out atomization, drying and granulation to form a heat-sensitive sealing layer 10 to obtain the heat-sensitive fragrance-carrying slow-release microcapsule 6.

Further, a heat-sensitive slow-release microcapsule is formed, and the step S4 adopts polyethylene glycol 1000-12000 as the heat-sensitive sealing layer 10 material.

Furthermore, the modified polylactic acid film inner core 2 is arranged into a folding ruler-shaped structure and is arranged in a cavity surrounded by the forming paper layer 3 in a surrounding way.

Further, the thickness of the modified polylactic acid film 5 is 0.05mm-0.1 mm; the thickness of the paper 4 is 0.15-0.25 mm.

Further, the inner layer spice is a water-soluble essence spice or a fragrance-enhanced plant powder spice; the water-soluble essence and spice is one or more of litchi extract, blueberry extract, green tea extract, dried orange peel extract and fructus phyllanthi extract; the flavoring plant powder spice is one or more of radix Puerariae, pericarpium Citri Tangerinae, Glycyrrhrizae radix, fructus Phyllanthi, fructus Jujubae, and red tobacco powder; the outer layer perfume is one or more of tobacco extract, purple branch rose essential oil, cocoa extract, and lemon oil.

Furthermore, the grain diameter of the flavoring plant powder spice is 1nm-1000 nm.

Further, the porous adsorption inner core 8 is one or more of kaolin, attapulgite, diatomite, porous rod-shaped magnesium oxide and porous rod-shaped zinc oxide.

Further, the particle size of the thermosensitive aroma-carrying slow-release microcapsule 6 is 50-300 μm; the particle size of the porous adsorption inner core 8 is 20-200 μm.

Further, the preparation method of the filter rod comprises the following steps: compounding the modified polylactic acid film inner core and the incense carrying paper 4 together through an adhesive layer 7 to form a film paper composite material, and attaching the thermosensitive incense carrying slow release microcapsule 6 on the surface of the incense carrying paper 4 in a coating mode; the film paper composite material with the thermosensitive fragrance-carrying slow-release microcapsules 6 is folded, gathered and formed in a bundling way, and has a longitudinal multi-channel structure. Then wrapping the membrane paper composite material by using forming paper to form a cylindrical filter tip rod.

Compared with the prior art, the invention has at least the following beneficial effects:

1. the aroma-carrying cooling filter tip rod disclosed by the application discloses a modified polylactic acid film inner core with cooling and aroma-carrying functions, and through the combination of aroma-carrying paper 4, a modified polylactic acid film 5 and a thermosensitive aroma-carrying slow-release microcapsule 6, the loading of aroma types of different materials is realized, and the diffusion loss of aroma is reduced while the temperature is reduced;

2. the application discloses a novel thermosensitive aroma-carrying slow-release microcapsule 6, which is provided with a three-layer wrapping structure comprising a porous adsorption inner core 8, a porous adsorption outer layer 9 and a thermosensitive sealing layer 3 according to aroma-carrying requirements of cigarette materials on various spices; the load of the split perfume and the water-soluble perfume is realized through inorganic porous materials with different particle sizes and pore diameters, and the active binding sites of the micron-sized inorganic powder material can efficiently load the water-soluble perfume and a slight powder material; the loading mode of stirring and standing is combined, so that higher loading efficiency is realized, and the waste of spices is reduced; the porous adsorption outer layer 9 made of chitosan material is beneficial to adsorbing oily perfume, and the perfume load adsorption is more uniform by combining the atomization and perfume spraying means; in order to avoid perfume loss, the outermost layer is provided with a heat-sensitive sealing layer 3 as protection, and the perfume can be diffused only at higher temperature.

3. In order to improve the purpose of cooling the flue gas, facilitate to spread it and reduce the suction resistance at the same time, this application has also designed the special folding ruler-shaped air current channel; the folding ruler-shaped airflow channel has the following advantages: firstly, mechanical operations such as embossing and the like are avoided in the processing process, and the loss of capsule particles in the processing process is reduced; secondly, the surface of the toilet paper with the folding structure is relatively flat and smooth, and the toilet paper is matched with the shape of the rod-shaped microcapsules, so that the loading effect is improved, and the dropping of the microcapsules is reduced; and thirdly, the folding-ruler-shaped airflow channels are formed by bundling and forming to form a plurality of airflow channels, and meanwhile, the loading area and the cooling area can be increased, so that the cooling and fragrance-carrying capacity of the cooling-down device is improved as far as possible under the condition of not influencing the suction resistance.

To sum up, the reduction effect of this application cavity filter rod to the flue gas temperature has strengthened 10%. The heat-sensitive aroma-carrying slow-release microcapsule has rich releasable aroma types and long retention time, makes up the deficiency of the aroma of the filtered smoke or improves the aroma of the cigarette, and increases special aroma, so that the cigarette aroma is more comfortable and harmonious.

Drawings

FIG. 1 is a schematic cross-sectional view of an aroma-bearing cooling filter rod according to the present invention;

FIG. 2 is a schematic structural diagram of the modified polylactic acid film core of the present invention;

FIG. 3 is a schematic cross-sectional view of the core of the modified polylactic acid film according to the present invention in an unfolded state.

FIG. 4 is a schematic cross-sectional view of the heat-sensitive fragrance-carrying sustained-release microcapsule 6 of the present invention

In the figure:

forming a paper layer 1; a modified polylactic acid film inner core 2; a heat-sensitive sealing layer 3; a fragrance-carrying paper 4; a modified polylactic acid film 5; a thermosensitive fragrance-carrying slow-release microcapsule 6; an adhesive layer 7; a porous adsorption inner core 8; a porous adsorbent outer layer 9.

Detailed Description

In order to make the objects, technical solutions and advantages of the embodiments of the present invention more apparent, the technical solutions of the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings of the embodiments of the present invention, and it is obvious that the described embodiments are some, but not all embodiments of the present invention. The components of embodiments of the present invention generally described and illustrated in the figures herein may be arranged and designed in a wide variety of different configurations.

Thus, the following detailed description of the embodiments of the present invention, presented in the figures, is not intended to limit the scope of the invention, as claimed, but is merely representative of selected embodiments of the invention. All other embodiments, which can be obtained by a person skilled in the art without any inventive step based on the embodiments of the present invention, are within the scope of the present invention.

In addition, the embodiments of the present invention and the features of the embodiments may be combined with each other without conflict.

It should be noted that: like reference numbers and letters refer to like items in the following figures, and thus, once an item is defined in one figure, it need not be further defined and explained in subsequent figures.

As shown in the figure:

example 1:

a fragrant cooling filter tip comprises a forming paper layer 1 and a modified polylactic acid film inner core 2; the formed paper layer 1 is of a cylindrical structure; the modified polylactic acid film inner core 2 is arranged in a cavity surrounded by the formed paper layer 1; the modified polylactic acid film inner core 2 comprises fragrance-carrying paper 4, a modified polylactic acid film 5 and a thermosensitive fragrance-carrying slow-release microcapsule 6;

the toilet paper 4 and the modified polylactic acid film 5 are adhered through an adhesive layer 7; the thermosensitive fragrance-carrying slow-release microcapsule 6 is sprayed on the surface of the fragrance-carrying paper 4;

the heat-sensitive aroma-carrying slow-release microcapsule 6 comprises a porous adsorption inner core 8, a porous adsorption outer layer 9 and a heat-sensitive sealing layer 3;

the porous adsorption outer layer 9 is wrapped outside the porous adsorption inner core 8; the heat-sensitive sealing layer 3 is arranged outside the porous adsorption outer layer 9;

the pore channels of the porous adsorption inner core 8 are adsorbed with inner-layer spices; the pore channels and the surface of the porous adsorption outer layer 9 are adsorbed with outer layer perfume.

Example 2:

on the basis of the embodiment 1, the preparation method of the heat-sensitive aroma-carrying slow-release microcapsule 6 comprises the following steps:

s1, calcining the porous adsorption inner core 8 and then grinding; weighing a certain amount of inner-layer perfume, dispersing and dissolving the inner-layer perfume in 75% ethanol solution together, ultrasonically stirring for 15-25 minutes, standing and soaking for 3-5 hours to obtain a flavored core material suspension, centrifuging the flavored core material suspension, and vacuum drying at normal temperature for 10 hours to form a porous adsorption inner core 8;

s2, mixing the aromatized core material powder with the chitosan solution, and stirring for 2-5 hours at normal temperature; naturally settling after stirring, pouring out the top liquid, reserving the bottom suspension, then freeze-drying, and forming a porous adsorption outer layer 9 on the surface of the porous adsorption inner core 8 to obtain core-shell powder particles;

s3, atomizing and spraying outer-layer spice to the surface of the core-shell perfuming powder particles through a particle flavoring machine to obtain compound fragrance type core-shell powder particles;

s4, mixing and stirring the compound fragrance type core-shell powder particles obtained in the step S3 with ethanol solution of polyethylene glycol in a certain proportion, and then carrying out atomization, drying and granulation to form a heat-sensitive sealing layer 3, so as to obtain the heat-sensitive fragrance-carrying slow-release microcapsule 6.

Example 3:

on the basis of the example 1-2, the heat-sensitive slow-release microcapsule is formed, and the step S4 adopts polyethylene glycol 1000-12000 as the heat-sensitive sealing layer 3 material.

Example 4:

on the basis of the embodiments 1-3, the modified polylactic acid film core 2 is arranged in a folding ruler-shaped structure and is arranged in a cavity surrounded by the forming paper layer 3 in a surrounding way.

Example 5:

on the basis of the examples 1 to 4, the modified polylactic acid film 5 has the thickness of 0.05mm to 0.1 mm; the thickness of the paper 4 is 0.15-0.25 mm.

Example 6:

on the basis of the embodiments 1-5, the inner layer spice is set as a water-soluble essence spice or a fragrance-enhanced plant powder spice; the water-soluble essence and spice is one or more of litchi extract, blueberry extract, green tea extract, dried orange peel extract and fructus phyllanthi extract; the flavoring plant powder spice is one or more of radix Puerariae, pericarpium Citri Tangerinae, Glycyrrhrizae radix, fructus Phyllanthi, fructus Jujubae, and red tobacco powder; the outer layer perfume is one or more of tobacco extract, purple branch rose essential oil, cocoa extract, and lemon oil.

Example 7:

in addition to examples 1 to 6, the particle size of the flavor-enhancing plant powder flavor was 1nm to 1000 nm.

Example 8:

on the basis of the embodiments 1 to 7, the porous adsorption core 8 is made of one or more of kaolin, attapulgite, diatomite, porous rod-shaped magnesium oxide and porous rod-shaped zinc oxide.

Example 9:

on the basis of the examples 1 to 8, the particle size of the heat-sensitive aroma-carrying slow-release microcapsule 6 is 50 to 300 μm; the particle size of the porous adsorption inner core 8 is 20-200 μm.

Example 10:

on the basis of the examples 1 to 9, compounding the modified polylactic acid film inner core and the incense carrying paper 4 together through an adhesive layer 7 to form a film paper composite material, and attaching the thermosensitive incense carrying slow release microcapsules 6 on the surface of the incense carrying paper 4 in a coating mode; the film paper composite material with the thermosensitive fragrance-carrying slow-release microcapsules 6 is folded, gathered and formed in a bundling way, and has a longitudinal multi-channel structure. Then wrapping the membrane paper composite material by using forming paper to form a cylindrical filter tip rod.

Example 11:

the preparation method of the thermosensitive aroma-carrying slow-release microcapsule 6 comprises the following steps:

s1, selecting kaolin with the particle size of 20-50 mu m as the inner core 8, calcining the porous adsorption inner core 8 and then grinding; weighing a certain amount of water-soluble essence and spice, dispersing and dissolving in 75% ethanol solution together, ultrasonically stirring for 15-25 minutes, standing and soaking for 3-5 hours to obtain a flavored core material suspension, centrifuging the flavored core material suspension, and vacuum drying at normal temperature for 10 hours to form a porous adsorption inner core 8;

s2, mixing the aromatized core material powder with a chitosan-glacial acetic acid solution, and stirring for 2-5h at normal temperature; naturally settling after stirring, pouring out the top liquid, reserving the bottom suspension, then freeze-drying, and forming a porous adsorption outer layer 9 on the surface of the porous adsorption inner core 8 to obtain core-shell powder particles;

s3, atomizing and spraying outer-layer spice to the surface of the core-shell perfuming powder particles through a particle flavoring machine to obtain compound fragrance type core-shell powder particles;

s4, mixing and stirring the compound fragrance type core-shell powder particles obtained in the step S3 with ethanol solution of polyethylene glycol in a certain proportion, and then carrying out atomization, drying and granulation to form a heat-sensitive sealing layer 3, so as to obtain the heat-sensitive fragrance-carrying slow-release microcapsule 6.

Example 12:

the preparation method of the thermosensitive aroma-carrying slow-release microcapsule 6 comprises the following steps:

s1, selecting porous rod-shaped magnesium oxide with the particle size of 20-50 mu m as the inner core 8, calcining the porous adsorption inner core 8 and then grinding; weighing a certain amount of water-soluble essence and spice, dispersing and dissolving in 75% ethanol solution together, ultrasonically stirring for 15-25 minutes, standing and soaking for 3-5 hours to obtain a flavored core material suspension, centrifuging the flavored core material suspension, and vacuum drying at normal temperature for 10 hours to form a porous adsorption inner core 8;

s2, mixing the aromatized core material powder with a chitosan-glacial acetic acid solution, and stirring for 2-5h at normal temperature; naturally settling after stirring, pouring out the top liquid, reserving the bottom suspension, then freeze-drying, and forming a porous adsorption outer layer 9 on the surface of the porous adsorption inner core 8 to obtain core-shell powder particles;

s3, atomizing and spraying outer-layer spice to the surface of the core-shell perfuming powder particles through a particle flavoring machine to obtain compound fragrance type core-shell powder particles;

s4, mixing and stirring the compound fragrance type core-shell powder particles obtained in the step S3 with ethanol solution of polyethylene glycol in a certain proportion, and then carrying out atomization, drying and granulation to form a heat-sensitive sealing layer 3, so as to obtain the heat-sensitive fragrance-carrying slow-release microcapsule 6.

Example 13:

the preparation method of the thermosensitive aroma-carrying slow-release microcapsule 6 comprises the following steps:

s1, selecting attapulgite with the particle size of 50-200 mu m as an inner core 8, adding a pore-forming agent into the porous adsorption inner core 8 material, calcining and grinding; weighing a certain amount of aroma-enhancing plant powder spice, dispersing and dissolving the aroma-enhancing plant powder spice in 75% ethanol solution, ultrasonically stirring for 15-25 minutes, standing and soaking for 3-5 hours to obtain an aroma-enhancing core material suspension, centrifuging the aroma-enhancing core material suspension, and vacuum-drying at normal temperature for 10 hours to form a porous adsorption inner core 8;

s2, mixing the aromatized core material powder with a chitosan-glacial acetic acid solution, and stirring for 2-5h at normal temperature; naturally settling after stirring, pouring out the top liquid, reserving the bottom suspension, then freeze-drying, and forming a porous adsorption outer layer 9 on the surface of the porous adsorption inner core 8 to obtain core-shell powder particles;

s3, atomizing and spraying outer-layer spice to the surface of the core-shell perfuming powder particles through a particle flavoring machine to obtain compound fragrance type core-shell powder particles;

s4, mixing and stirring the compound fragrance type core-shell powder particles obtained in the step S3 with ethanol solution of polyethylene glycol in a certain proportion, and then carrying out atomization, drying and granulation to form a heat-sensitive sealing layer 3, so as to obtain the heat-sensitive fragrance-carrying slow-release microcapsule 6.

Example 14:

the preparation method of the thermosensitive aroma-carrying slow-release microcapsule 6 comprises the following steps:

s1, selecting porous rod-shaped zinc oxide with the particle size of 50-200 mu m as an inner core 8, adding a pore-forming agent into the porous adsorption inner core 8 material, calcining and grinding; weighing a certain amount of aroma-enhancing plant powder spice, dispersing and dissolving the aroma-enhancing plant powder spice in 75% ethanol solution, ultrasonically stirring for 15-25 minutes, standing and soaking for 3-5 hours to obtain an aroma-enhancing core material suspension, centrifuging the aroma-enhancing core material suspension, and vacuum-drying at normal temperature for 10 hours to form a porous adsorption inner core 8;

s2, mixing the aromatized core material powder with a chitosan-glacial acetic acid solution, and stirring for 2-5h at normal temperature; naturally settling after stirring, pouring out the top liquid, reserving the bottom suspension, then freeze-drying, and forming a porous adsorption outer layer 9 on the surface of the porous adsorption inner core 8 to obtain core-shell powder particles;

s3, atomizing and spraying outer-layer spice to the surface of the core-shell perfuming powder particles through a particle flavoring machine to obtain compound fragrance type core-shell powder particles;

s4, mixing and stirring the compound fragrance type core-shell powder particles obtained in the step S3 with ethanol solution of polyethylene glycol in a certain proportion, and then carrying out atomization, drying and granulation to form a heat-sensitive sealing layer 3, so as to obtain the heat-sensitive fragrance-carrying slow-release microcapsule 6.

Example 15:

the preparation method of the thermosensitive aroma-carrying slow-release microcapsule 6 comprises the following steps:

s1, selecting a composition of porous rod-shaped zinc oxide and attapulgite with the particle sizes of 20, 50, 100, 150 and 200 in a mass ratio of 1:1 as an inner core 8, adding a pore-forming agent into a material of the porous adsorption inner core 8, calcining and grinding; weighing water-soluble essence and spice or aroma-enhanced plant powder spice according to the mass ratio of 1:1, dispersing and dissolving the water-soluble essence and spice or aroma-enhanced plant powder spice together in a 75% ethanol solution, ultrasonically stirring for 15-25 minutes, standing and soaking for 3-5 hours to obtain an aroma-enhanced core material suspension, centrifuging the aroma-enhanced core material suspension, and vacuum-drying at normal temperature for 10 hours to form a porous adsorption inner core 8;

s2, mixing the aromatized core material powder with a chitosan-glacial acetic acid solution, and stirring for 2-5h at normal temperature; naturally settling after stirring, pouring out the top liquid, reserving the bottom suspension, then freeze-drying, and forming a porous adsorption outer layer 9 on the surface of the porous adsorption inner core 8 to obtain core-shell powder particles;

s3, atomizing and spraying outer-layer spice to the surface of the core-shell perfuming powder particles through a particle flavoring machine to obtain compound fragrance type core-shell powder particles;

s4, mixing and stirring the compound fragrance type core-shell powder particles obtained in the step S3 with ethanol solution of polyethylene glycol in a certain proportion, and then carrying out atomization, drying and granulation to form a heat-sensitive sealing layer 3, so as to obtain the heat-sensitive fragrance-carrying slow-release microcapsule 6.

Example 16:

a preparation method of the fragrant cooling filter tip rod comprises the following steps:

compounding the modified polylactic acid film inner core and the fragrance-carrying paper 4 together through an adhesive layer 7 to form a film-paper composite material, and attaching any one of the embodiments 11-15 or other thermosensitive fragrance-carrying slow-release microcapsules 6 which do not exceed the proportioning range to the surface of the fragrance-carrying paper 4 in a coating mode; the film paper composite material with the thermosensitive fragrance-carrying slow-release microcapsules 6 is folded, gathered and formed in a bundling way, and has a longitudinal multi-channel structure. Then wrapping the membrane paper composite material by forming paper to form a cylindrical filter tip rod;

the modified polylactic acid film uses polymer materials such as montmorillonite, polyethylene glycol, reduced graphene oxide, polypropylene and the like as modifiers, so that the cooling efficiency and the mechanical property of the film are improved;

the thickness of the modified polylactic acid film is 0.030mm-0.100 mm.

The modified polylactic acid film had a basis weight of 40g/m²-150g/m²。

The thickness of the fragrance-carrying paper is 0.030mm-0.120 mm.

The weight of the paper carrying the incense is 30g/m²-120g/m²。

The fragrance-carrying paper is one or a combination of more of molding paper, composite molding paper, polylactic acid paper, cellulose paper and non-woven fabrics.

The adhesive is any one of white latex, lap adhesive, polyacrylate and polyvinyl alcohol. The glue application amount is 0.5g/m²-3.5g/m²。

Example 17:

a preparation method of the fragrant cooling filter tip rod comprises the following steps:

selecting the material with the thickness of 0.05mm and the quantitative of 50g/m²Polyethylene glycol modified polylactic acid film with the concentration of 1.5g/m²Coating adhesive polyacrylate in an amount of 45g/m with a thickness of 0.05mm²The incense-carrying paper 4 is compounded into the modified polylactic acid film inner core 2.

The heat-sensitive fragrance-carrying sustained-release microcapsule 6 described in example 15 was selected.

Coating the thermosensitive sustained-release microcapsules on the surface of the toilet paper 4 in a spraying mode, and longitudinally folding the composite sheet, wherein the folding distance is 2.0mm, and the depth is 3.0 mu m; then wrapping the modified polylactic acid film inner core 2 into a circular filter stick with the length of 10mm, the outer diameter of 6mm, the longitudinal uniformity of the whole body and the porous cross section by using the wrapping paper. Combining the cooling filter rod section and the acetate fiber section according to the length ratio of 10:15 and preparing cigarettes, wherein the cooling section is close to the tobacco shred end, and the same specification cigarettes are prepared by adopting the acetate fiber filter rod as a control group. Burning and smoking the cigarettes with the two filter sticks, and respectively testing the mainstream smoke temperature of the cigarette filter stick at the fifth opening, wherein the temperature detection result is shown in table 1.

Example 18:

a preparation method of the fragrant cooling filter tip rod comprises the following steps:

selecting the material with the thickness of 0.08mm and the quantitative of 75g/m²The polylactic acid film modified by reduced graphene oxide is coated on the film at a ratio of 1.0g/m²Coating white latex in an amount of 40g/m with a thickness of 0.035mm²The cellulose paper is compounded into a modified polylactic acid film inner core 2.

The heat-sensitive fragrance-carrying sustained-release microcapsule 6 described in example 15 was selected.

Coating the thermosensitive sustained-release microcapsules on the surface of the toilet paper 4 in a spraying mode, and longitudinally folding the composite sheet, wherein the folding distance is 2.5mm, and the depth is 3.5 mu m; and then wrapping the modified polylactic acid film inner core 2 into a circular filter stick with the length of 15mm, the outer diameter of 8mm, the longitudinal uniformity of the whole body and the porous cross section by using the wrapping paper. And (3) mixing the cooling filter rod section and the acetate fiber section according to the weight ratio of 15: 10 length ratio, making cigarette, cooling section near tobacco end, and making cigarette with same specification as control group by using acetate fiber filter stick. Burning and smoking the cigarettes with the two filter sticks, and respectively testing the mainstream smoke temperature of the cigarette filter stick at the fifth opening, wherein the temperature detection result is shown in table 1.

Example 19:

a preparation method of the fragrant cooling filter tip rod comprises the following steps:

selecting the material with the thickness of 0.06mm and the quantitative of 65g/m²The polylactic acid film modified by montmorillonite is coated with 1.9g/m²Coating white latex in an amount of 50g/m with a thickness of 0.06mm²The polylactic acid paper is compounded into the modified polylactic acid film inner core 2.

The heat-sensitive fragrance-carrying sustained-release microcapsule 6 described in example 15 was selected.

Coating the thermosensitive slow-release microcapsules on the surface of the toilet paper 4 in a printing mode, and longitudinally folding the composite sheet, wherein the folding distance is 1.5mm, and the depth is 2.5 mu m; then wrapping the modified polylactic acid film inner core 2 into a circular filter stick with the length of 10mm, the outer diameter of 5mm, longitudinal uniformity and porous cross section by using the wrapping paper. And (3) mixing the cooling filter rod section and the acetate fiber section according to the weight ratio of 10:15 length ratio, making cigarette, cooling section near tobacco end, and making cigarette with same specification as control group by using acetate fiber filter stick. Burning and smoking the cigarettes with the two filter sticks, and respectively testing the mainstream smoke temperature of the cigarette filter stick at the fifth opening, wherein the temperature detection result is shown in table 1.

Example 20:

a preparation method of the fragrant cooling filter tip rod comprises the following steps:

selecting the material with the thickness of 0.10mm and the quantitative of 100g/m²The polylactic acid film modified by montmorillonite is coated with 1.3g/m²Coating white latex in an amount of 50g/m with a thickness of 0.06mm²The polylactic acid paper is compounded into the modified polylactic acid film inner core 2.

The heat-sensitive fragrance-carrying sustained-release microcapsule 6 described in example 15 was selected.

Coating the thermosensitive slow-release microcapsules on the surface of the toilet paper 4 in a printing mode, and longitudinally folding the composite sheet, wherein the folding distance is 2mm, and the depth is 1.5 mu m; and then wrapping the modified polylactic acid film inner core 2 into a circular filter stick with the length of 20mm, the outer diameter of 7mm, the longitudinal uniformity of the whole body and the porous cross section by using the wrapping paper. And (3) mixing the cooling filter rod section and the acetate fiber section according to the ratio of 20: 5, combining and manufacturing cigarettes, wherein the cooling section is close to the tobacco shred end, and the cigarettes with the same specification are manufactured by adopting an acetate fiber filter stick as a control group. Burning and smoking the cigarettes with the two filter sticks, and respectively testing the mainstream smoke temperature of the cigarette filter stick at the fifth opening, wherein the temperature detection result is shown in table 1.

TABLE 1 cigarette smoke temp. result comparison table

	Control sample filter stick outlet temperature	Outlet temperature of aroma-carrying cooling filter stick
			Example 17	63℃	37℃
Example 18	71℃	31℃
			Example 19	59℃	35℃
Example 20	66℃	29℃

TABLE 2 cigarette evaluation result comparison table

Although the present invention has been described in detail with reference to the foregoing embodiments, it will be apparent to those skilled in the art that various changes in the embodiments and/or modifications of the invention can be made, and equivalents and modifications of some features of the invention can be made without departing from the spirit and scope of the invention.