CN109820232B - Method for preparing cooling material for cigarettes, prepared cooling material for cigarettes and application - Google Patents
Method for preparing cooling material for cigarettes, prepared cooling material for cigarettes and application Download PDFInfo
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- CN109820232B CN109820232B CN201910097840.7A CN201910097840A CN109820232B CN 109820232 B CN109820232 B CN 109820232B CN 201910097840 A CN201910097840 A CN 201910097840A CN 109820232 B CN109820232 B CN 109820232B
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Abstract
The invention belongs to the field of tobacco products, and particularly relates to a method for preparing a cooling material for cigarettes, which comprises the following steps (1), (2), (3) and optional step (1-1): (1) mixing agar, water, an optional carbon material, and an optional first substance to obtain a first mixture; wherein the carbon material has a specific surface area of 100-3000 m2The first substance is at least one selected from the group consisting of silicon dioxide with a Mohs hardness of 5-8, clay with a Mohs hardness of 1-4 and nano-cellulose; (1-1) mixing the first mixture with essence to obtain a second mixture; (2) freezing the first mixture or the second mixture to obtain a solid; (3) the solid was freeze-dried to obtain a dried product. The invention also relates to the prepared cooling material for the cigarette and application thereof. The cooling material for the cigarette prepared by the method has obvious cooling effect on the cigarette which is not burnt when being heated.
Description
Technical Field
The invention belongs to the field of tobacco products, and particularly relates to a method for preparing a cooling material for cigarettes, the prepared cooling material for the cigarettes and application of the cooling material in the tobacco products.
Background
A heating non-combustion cigarette (HnB) belongs to a novel tobacco product, which mainly heats a cigarette bomb through a heat source, generates smoke for a consumer to draw in a non-combustion state, reduces harmful smoke components generated by conventional cigarette combustion and thermal cracking, and does not generate side-stream smoke. HnB are used by consumers whose heating zone tobacco material is typically at a temperature below 500 c, but because of the short path from the mouthpiece to the heating zone, a tobacco cooling element is required between the heating zone and the mouthpiece.
Generally, a heated non-burning cigarette is composed of a cigarette heating part made of a tobacco material, a cigarette cooling part, and a smoke filtering part. Among them, a cooling member for a cigarette is generally made of a material such as a polylactic acid composite film, polyethylene, polypropylene, polyvinyl chloride, polyethylene terephthalate, cellulose acetate, paper, and an aluminum foil, but the cooling effect of the cooling member for a cigarette made of these materials is yet to be improved.
At present, a cooling part for cigarettes with better cooling effect needs to be developed.
Disclosure of Invention
The invention provides a method for preparing a cooling material for cigarettes, and a cooling part for cigarettes made of the material has a good cooling effect on cigarettes which are not combusted when heated. On the basis, the invention provides the prepared cooling material for the cigarettes and the application thereof in tobacco products.
The first aspect of the present invention relates to a method for preparing a cooling material for cigarettes, comprising the following steps (1), (2), (3) and optionally (1-1):
(1) mixing agar, water, an optional carbon material, and an optional first substance to obtain a first mixture; wherein the carbon material has a specific surface area of 100 to 3000m2G (e.g., 400, 600, 1000, 1300, 1600, 1800, 2000, 2400, 2600, 2700, 2800m2A one-dimensional carbon material and/or a specific surface area of 100 to 3000m2G (e.g., 400, 600, 1000, 1300, 1600, 1800, 2000, 2400, 2600, 2700, 2800m2A two-dimensional carbon material per gram), the first substance being at least one selected from the group consisting of silica having a Mohs hardness of 5 to 8 (e.g., 5.5, 6, 6.5, 7, 7.5, 8), clay having a Mohs hardness of 1 to 4 (e.g., 1.5, 2, 2.5, 3, 3.5), and nanocellulose;
(1-1) mixing the first mixture with essence to obtain a second mixture;
(2) freezing the first mixture or the second mixture to obtain a solid;
(3) and (3) freeze-drying the solid obtained in the step (2) to obtain a dried product.
In some embodiments of the first aspect of the present invention, in step (1), the weight ratio of agar to water is (0.5-5): 1, preferably (1-3): 1, for example 1.5:1, 2:1, 2.5:1, 3.5:1, 4:1, 4.5: 1.
In certain embodiments of the first aspect of the present invention, in step (1), the weight of the carbon material is 8% to 90%, preferably 10% to 70%, such as 10%, 12%, 14%, 18%, 20%, 22%, 25%, 28%, 30%, 34%, 38%, 40%, 43%, 46%, 50%, 52%, 54%, 56%, 60%, 64%, 68%, 70%, 73%, 75%, 77%, 80%, 82%, 84%, 86%, 88% of the sum of the weight of agar and water.
In certain embodiments of the first aspect of the present invention, in step (1), the carbon material has a specific surface area of 100 ℃ @3000m2A one-dimensional carbon material per gram.
In certain embodiments of the first aspect of the present invention, in step (1), the one-dimensional carbon material is activated carbon fiber.
In certain embodiments of the first aspect of the present invention, in step (1), the activated carbon fibers have an average diameter of 2 to 23 μm, for example, 3, 5, 7, 9, 11, 13, 15, 17, 19, 21 μm.
In some embodiments of the first aspect of the present invention, in the step (1), the activated carbon fiber has a specific surface area of 100 to 3000m2Preferably 300 to 1500 m/g2G, e.g. 500, 700, 900, 1000, 1200, 1400, 1600, 1800, 2000, 2100, 2300, 2500, 2700, 2900m2/g。
In some embodiments of the first aspect of the present invention, in step (1), the activated carbon fibers have an average pore size of 1 to 18nm, such as 2, 4, 6, 8, 10, 12, 14, 16 nm.
In certain embodiments of the first aspect of the present invention, in step (1), the two-dimensional carbon material is graphene oxide and/or expanded graphite.
In certain embodiments of the first aspect of the present invention, in step (1), the weight of the first substance is 10% to 90%, preferably 12% to 70%, such as 15%, 18%, 20%, 22%, 24%, 26%, 30%, 33%, 36%, 38%, 40%, 43%, 46%, 50%, 54%, 58%, 60%, 63%, 66%, 70%, 73%, 76%, 78%, 80%, 82%, 84%, 86%, 88% of the sum of the weight of agar and water.
In certain embodiments of the first aspect of the present invention, in step (1), the clay is at least one selected from the kaolinite group clay, the smectite group clay, the illite group clay and the chlorite group clay, preferably the kaolinite group clay.
In certain embodiments of the first aspect of the present invention, in step (1), the nanocellulose is selected from at least one of cellulose microfibrils, nanocellulose crystals and bacterial nanocelluloses, preferably cellulose microfibrils.
In certain embodiments of the first aspect of the present invention, in step (1), the first substance is selected from at least one of silica having a mohs hardness of 5 to 8 (e.g., 5.5, 6, 6.5, 7, 7.5), kaolinite group clay having a mohs hardness of 1 to 4 (e.g., 1.5, 2, 2.5, 3, 3.5), and cellulose microfibrils.
In certain embodiments of the first aspect of the present invention, in step (1), the silica has a density at 20 ℃ of 1.5 to 6 times, e.g., 2, 2.5, 3, 3.4, 3.8, 4, 4.2, 4.4, 4.7, 5, 5.2, 5.4, 5.6, 5.8 times that of water at 4 ℃.
In some embodiments of the first aspect of the present invention, in step (1), the density of the kaolinite group clay at 20 ℃ is 1.5 to 8 times the density of water at 4 ℃, e.g., 2, 2.3, 2.6, 3, 3.4, 3.8, 4, 4.2, 4.4, 4.6, 4.8, 5, 5.3, 5.6, 5.8, 6, 6.3, 6.5, 6.7, 7, 7.2, 7.4, 7.8 times.
In certain embodiments of the first aspect of the present invention, the cellulose microfibrils are prepared by steps (i), (iii), (iv) and optionally (ii) as follows:
(i) mixing microcrystalline cellulose with an acid solution to obtain a mixture containing cellulose;
(ii) (ii) subjecting the mixture obtained in step (i) to ultrasonic treatment to obtain a mixture;
(iii) (iii) subjecting the mixture obtained in step (i) or the mixture obtained in step (ii) to solid-liquid separation to obtain a solid phase;
(iv) and washing and drying the solid phase substance to obtain the cellulose microfibril.
In some embodiments of the first aspect of the present invention, further comprising one or more of the following (a) to (j):
(a) in step (i), the microcrystalline cellulose has a crystallinity of 40% to 85%, e.g. 45%, 50%, 55%, 60%, 63%, 66%, 70%, 74%, 78%, 80%, 82%, 83%;
more preferably, the microcrystalline cellulose has an average degree of polymerization of 60 to 300, such as 70, 80, 90, 100, 115, 120, 125, 130, 135, 140, 110, 145, 148, 150, 160, 170, 180, 190, 200, 220, 240, 250, 270, 280, 290;
(b) in step (i), the ratio of the microcrystalline cellulose to the acid solution is (1-10): 1(g/mL), for example, 2:1(g/mL), 3:1(g/mL), 4:1(g/mL), 5:1(g/mL), 6:1(g/mL), 7:1(g/mL), 8:1(g/mL), 9:1 (g/mL);
(c) in step (i), the acid solution is a sulfuric acid solution;
more preferably, the concentration of the sulfuric acid solution is 50% (W/W) to 80% (W/W), for example 55% (W/W), 60% (W/W), 65% (W/W), 70% (W/W), 75% (W/W), 78% (W/W);
(d) in the step (i), the mixing time is 0.5 to 5 hours, such as 1 hour, 1.5 hours, 2 hours, 2.5 hours, 3 hours, 3.5 hours, 4 hours, 4.5 hours;
(e) the content of the cellulose in the mixture obtained in the step (i) is 1-10 g/mL, such as 2g/mL, 3g/mL, 4g/mL, 5g/mL, 6g/mL, 7g/mL, 8g/mL, 9 g/mL;
(f) in step (ii), the time of the ultrasonic treatment is 1 to 30 minutes, for example, 2 minutes, 4 minutes, 6 minutes, 8 minutes, 10 minutes, 12 minutes, 14 minutes, 16 minutes, 18 minutes, 20 minutes, 22 minutes, 23 minutes, 25 minutes, 27 minutes, 29 minutes;
(g) in step (iii), solid-liquid separation is performed by filtration;
(h) in step (iv), washing with water;
(i) in step (iv), the number of washing is one or more, more preferably two;
(j) in step (iv), drying is carried out at normal temperature (for example, 20 ℃ C. to 35 ℃ C.).
In some embodiments of the first aspect of the present invention, in step (i), the microcrystalline cellulose has an ash content of 0.7% or less, such as 0.5% or less, 0.4% or less, 0.3% or less, 0.2% or less, 0.1% or less.
In some embodiments of the first aspect of the present invention, the method comprises one or more of the following a to I:
A. in the step (1), the mixing temperature is 30 ℃ to 150 ℃, for example, 50 ℃, 60 ℃, 70 ℃, 80 ℃, 90 ℃, 100 ℃, 120 ℃, 130 ℃ and 140 ℃;
preferably, mixing under boiling conditions;
B. between the steps (1) and (2) or between the steps (1-1) and (2), further comprising the step (1-2): standing the first mixture or the second mixture;
preferably, in the step (1-2), the temperature of the standing is 10 to 50 ℃, for example, 15 ℃, 20 ℃, 25 ℃, 30 ℃, 35 ℃, 40 ℃, 45 ℃;
preferably, in the step (1-2), the standing time is 5 to 48 hours, such as 8 hours, 10 hours, 12 hours, 14 hours, 16 hours, 18 hours, 20 hours, 22 hours, 24 hours, 26 hours, 28 hours, 30 hours, 32 hours, 34 hours, 36 hours, 38 hours, 40 hours, 42 hours, 44 hours, 46 hours, 47 hours;
C. in the step (1-1), the weight of the essence is 12% -70% of the sum of the weight of the agar and the weight of the water in the step (1), such as 14%, 16%, 18%, 20%, 22%, 24%, 26%, 28%, 30%, 32%, 34%, 36%, 38%, 40%, 43%, 46%, 48%, 50%, 52%, 55%, 57%, 59%, 60%, 62%, 64%, 66% and 68%;
preferably, the essence is an essence with common taste or fragrance in the field;
D. in the step (1-1), the temperature of mixing is 15 to 50 ℃ such as 18 ℃, 20 ℃, 22 ℃, 24 ℃, 26 ℃, 28 ℃, 30 ℃, 33 ℃, 36 ℃, 38 ℃, 40 ℃, 42 ℃, 44 ℃, 46 ℃ and 48 ℃;
E. in the step (1-1), the mixing time is 2 to 60 minutes, for example, 4 minutes, 6 minutes, 8 minutes, 10 minutes, 12 minutes, 14 minutes, 16 minutes, 18 minutes, 20 minutes, 23 minutes, 26 minutes, 29 minutes, 30 minutes, 32 minutes, 34 minutes, 36 minutes, 38 minutes, 40 minutes, 42 minutes, 44 minutes, 46 minutes, 48 minutes, 50 minutes, 53 minutes, 56 minutes, 58 minutes;
F. in the step (2), freezing is carried out in liquid nitrogen or at-60 to-15 ℃ (for example, -55 ℃, -50 ℃, -45 ℃, -40 ℃, -35 ℃, -30 ℃, -25 ℃, -20 ℃, -18 ℃);
G. in the step (3), the temperature of freeze drying is-80 ℃ to-15 ℃, such as-75 ℃, 70 ℃, 65 ℃, 60 ℃, 55 ℃, 50 ℃, 45 ℃, 40 ℃, 35 ℃, 30 ℃, 25 ℃, 20 ℃ and 18 ℃;
H. in the step (3), the degree of vacuum of the freeze-drying is 0.2 to 5MPa, for example, 0.3MPa, 0.5MPa, 0.6MPa, 0.8MPa, 1MPa, 1.2MPa, 1.5MPa, 1.7MPa, 2MPa, 2.3MPa, 2.6MPa, 2.8MPa, 3MPa, 3.2MPa, 3.5MPa, 3.7MPa, 4MPa, 4.1MPa, 4.3MPa, 4.5MPa, 4.7MPa, 4.9 MPa;
I. in the step (3), the freeze-drying time is 10 to 48 hours, for example, 12 hours, 14 hours, 16 hours, 18 hours, 20 hours, 22 hours, 24 hours, 26 hours, 28 hours, 30 hours, 32 hours, 34 hours, 36 hours, 38 hours, 40 hours, 41 hours, 43 hours, 45 hours, and 47 hours.
The second aspect of the invention relates to a cooling material for cigarettes, which is prepared by the method of the first aspect of the invention.
The invention relates to a cooling component for cigarettes, which comprises an inner core and an optional packaging layer wrapped outside the inner core; wherein the inner core is made of the cooling material for the cigarette in the second aspect of the invention.
In some embodiments of the third aspect of the present invention, the inner core is a roll of layered tobacco cooling material.
In some embodiments of the third aspect of the present invention, the layered smoking article cooling material has a thickness of 0.2 to 3mm, such as 0.5mm, 0.8mm, 1mm, 1.2mm, 1.4mm, 1.6mm, 1.8mm, 2mm, 2.2mm, 2.4mm, 2.6mm, 2.8mm, 2.9 mm.
In some embodiments of the third aspect of the present invention, the wrapper is a plug wrap for tobacco.
In some embodiments of the third aspect of the present invention, the cooling element for tobacco has an outer diameter of 4 to 50mm, for example 6mm, 8mm, 10mm, 12mm, 14mm, 16mm, 18mm, 20mm, 22mm, 24mm, 26mm, 30mm, 33mm, 36mm, 39mm, 40mm, 42mm, 44mm, 46mm, 48 mm.
In some embodiments of the third aspect of the present invention, the cooling element for a cigarette has a length of 4 to 40mm, for example 6, 8, 10, 11, 13, 15, 17, 19, 20, 22, 24, 26, 28, 30, 32, 34, 35, 37, 39 mm.
In a fourth aspect, the invention relates to a smoking article comprising a cooling element for a cigarette according to the third aspect of the invention.
In some embodiments of the fourth aspect of the present invention, the smoking article is a heat-not-burn cigarette.
In some embodiments of the fourth aspect of the present invention, the heat non-combustible cigarette further comprises a cigarette heating component, a smoke filtering component and optionally a smoke cooling component.
The fifth aspect of the invention relates to the application of the cooling material for cigarettes in the second aspect of the invention in the preparation of cooling parts for cigarettes.
In some embodiments of the fifth aspect of the present invention, the cooling element for a cigarette is a cooling element for a cigarette that heats a non-burning cigarette.
The sixth aspect of the present invention relates to the use of the cooling material for tobacco according to the second aspect of the present invention or the cooling member for tobacco according to the third aspect of the present invention for producing a tobacco product.
In some embodiments of the sixth aspect of the present invention, the smoking article is a heat-not-burn cigarette.
In the present invention, unless otherwise specified, wherein:
the term "freeze drying", also known as sublimation drying, refers to a drying process in which frozen aqueous material is removed by direct sublimation of ice to vapor under relatively high vacuum.
The term "one-dimensional carbon material" refers to a carbon material having a fibrous structure.
The term "two-dimensional carbon material" refers to a carbon material having a layered structure.
The term "activated carbon fiber" refers to a fibrous carbonaceous adsorbent having a diameter of usually 5 to 30 μm. Is a third type of activated carbon, following powdered activated carbon and Granular Activated Carbon (GAC). Compared with the former two, it has large adsorption capacity per unit mass, fast adsorption and desorption speed and easy regeneration.
The term "nanocellulose" refers to a rod-shaped crystal with a particle size of nanometer grade obtained by acid hydrolysis of cellulose, and has the characteristics of high mechanical strength, large specific surface area, high Young modulus, strong hydrophilicity and the like, and comprises cellulose microfibril, nanocellulose crystal and bacterial nanocellulose. Wherein, the nano-cellulose crystal is a rod-shaped segment with high crystallinity at the nano level formed by transversely dissociating cellulose fibers in the amorphous area along the axis; bacterial nanocellulose is biosynthesized by microorganisms.
The term "cellulose microfibrils" refers to a structure unit which is a biological cell wall and is formed by regularly arranging many chain cellulose molecules into clusters and further combining the clusters when forming the cell wall. The strength of the cellulose microfibrils is about one fourth of the strength of the carbon nanotubes, and the cellulose microfibrils also have good toughness.
The term "microcrystalline cellulose" refers to a rod-like fine crystal obtained by hydrolyzing natural cellulose or synthetic fiber with hydrochloric acid. The microcrystalline cellulose belongs to a semi-synthetic high-molecular compound, has the diameter of 1-10 mu m, and is odorless, tasteless and water-insoluble white powder.
The invention has the following beneficial effects:
the cooling material for the cigarette prepared by the method has obvious cooling effect on the cigarette which is not burnt when being heated.
Drawings
In order that the present disclosure may be more readily and clearly understood, reference is now made to the following detailed description of the embodiments of the present disclosure taken in conjunction with the accompanying drawings, in which
FIG. 1 is a front view of a cooling member for cigarettes in examples 1 to 7 of the present invention;
FIG. 2 is a side view of a cooling member for a cigarette according to embodiments 1 to 7 of the present invention;
FIG. 3 is a schematic view showing the structure of a non-burning cigarette according to an example of the present invention;
wherein: s represents a winding drum, M represents a cigarette forming paper, 1 represents a smoke product heating part, 2 represents a smoke cooling part, 3 represents a cigarette cooling part 3-1, 3-2, 3-4 or 3-A, and 4 represents a smoke filtering part.
Detailed Description
The embodiments of the present invention will now be described more fully hereinafter with reference to the accompanying examples, in which some, but not all embodiments of the invention are shown. The following description of at least one exemplary embodiment is merely illustrative in nature and is in no way intended to limit the invention, its application, or uses. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
The materials used in the following examples and comparative examples are as follows:
activated carbon fiber: the average diameter is 10 μm and the specific surface area is 1000m2About/g, the average pore diameter is 3.0 nm;
silicon dioxide: a Mohs hardness of 6.5 and a relative density (d420) of 2.5;
kaolinite group clays: a Mohs hardness of 2.5 and a relative density (d420) of 2.6;
microcrystalline cellulose powder: the crystallinity is 62.3 percent, the average polymerization degree is 137, and the ash content is less than or equal to 0.1 percent.
Example 1
(1) Stirring agar powder and water in a weight ratio of 1:1, heating to boil, and standing at 20-30 ℃ for 12 hours to obtain water-containing agar.
(2) Pre-freezing water-containing agar into solid in liquid nitrogen, and drying the obtained solid in a freeze dryer at-35 deg.C under vacuum degree of 1MPa for 24 hr to obtain dry agar with thickness of 1.0mm and porous spongy white solid.
(3) Cutting dry agar into suitable size, rolling into a roll, wrapping a layer of cigarette forming paper (see figures 1-2) outside the roll to obtain a cigarette cooling part 3-1, wherein the length of the part is 20mm, and the outer diameter is 22.0 mm.
Example 2
(1) Stirring and heating agar powder, activated carbon fiber, silicon dioxide and water in a weight ratio of 2:1.35:0.75:1 to boil, and then standing for 14 hours at 20-30 ℃ to obtain the water-containing agar.
(2) Pre-freezing water-containing agar into solid in a low temperature refrigerator (-40 deg.C), and drying the obtained solid in a freeze dryer at-45 deg.C under 0.5MPa for 24 hr to obtain dry agar with thickness of 0.8mm and porous sponge black solid.
(3) Cutting dry agar into suitable size, rolling into a roll, wrapping a layer of cigarette forming paper (see figures 1-2) outside the roll to obtain a cigarette cooling part 3-2, wherein the length of the part is 20mm, and the outer diameter is 22.0 mm.
Example 3
(1) Stirring and heating agar powder, activated carbon fibers, kaolinite clay and water in a weight ratio of 3:1.25:2:2 to boil, cooling the obtained mixture to 30 ℃, adding essence, continuously stirring for 5 minutes, wherein the adding amount of the essence is 50 percent of the total weight of the agar powder and the water, and then standing for 18 hours at 20-30 ℃ to obtain the water-containing agar.
(2) Pre-freezing water-containing agar into solid in liquid nitrogen, and drying the obtained solid in a freeze dryer at-50 deg.C under 0.6MPa for 24 hr to obtain dry agar with thickness of 1.5mm and porous sponge black solid.
(3) Cutting dry agar into suitable size, rolling into a roll, wrapping a layer of cigarette forming paper (see figures 1-2) outside the roll to obtain a cigarette cooling part 3-3, wherein the length of the part is 20mm, and the outer diameter is 22.0 mm.
Example 4
(1) 500g of microcrystalline cellulose powder is put into 100mL of 64% (W/W) sulfuric acid solution with concentration and stirred for 1 hour for acid hydrolysis, and suspension with the cellulose content of 5g/mL is obtained; carrying out ultrasonic treatment on the suspension in ice bath for 10 minutes for dispersing and filtering to obtain cellulose; and washing the cellulose twice by using deionized water, and performing centrifugal separation to obtain the cellulose microfibril.
(2) Stirring and heating agar powder, activated carbon fiber, cellulose microfibril and water in a weight ratio of 2:1.5:1.5:1 to boil, cooling the obtained mixture to 30 ℃, adding essence, continuing stirring for 10 minutes, wherein the adding amount of the essence is 25 percent of the total weight of the agar powder and the water, and then standing for 24 hours at 20-30 ℃ to obtain the water-containing agar.
(3) Pre-freezing water-containing agar into solid in liquid nitrogen, and drying the obtained solid in a freeze dryer for 24 hr at-45 deg.C under 0.6MPa to obtain dry agar with thickness of 2mm and porous spongy black solid.
(4) Cutting dry agar into suitable size, rolling into a roll, wrapping a layer of cigarette forming paper (see figures 1-2) outside the roll to obtain a cigarette cooling part 3-4, wherein the length of the part is 20mm, and the outer diameter is 22.0 mm.
Example 5
The dry agar is prepared according to the steps (1) to (2) in the example 1, the dry agar is cut into a proper size and is wound into a reel, and a layer of cigarette forming paper (shown in figures 1-2) is wrapped outside the reel to obtain the cooling part 3-5 for cigarettes, wherein the length of the cooling part is 13mm, and the outer diameter of the cooling part is 22.0 mm.
Example 6
The dry agar is prepared according to the steps (1) to (2) in the example 2, the dry agar is cut into a proper size and is wound into a reel, a layer of cigarette forming paper (shown in figures 1-2) is wrapped outside the reel, and the cooling part 3-6 for the cigarette is obtained, and the length of the cooling part is 15mm, and the outer diameter of the cooling part is 22.0 mm.
Example 7
Dry agar was prepared according to the steps (1) to (2) in example 3, cut into a suitable size, wound into a roll, and wrapped with a layer of cigarette paper (see fig. 1 to 2) to obtain a cooling member 3-7 for cigarettes, which had a length of 11mm and an outer diameter of 22.0 mm.
Comparative example
(1) Stirring agar powder and water in a weight ratio of 1:1, heating to boil, and standing at 20-30 ℃ for 12 hours to obtain water-containing agar.
(2) The aqueous agar was dried at 60 ℃ for 24 hours to obtain dry agar with a thickness of 0.5 mm.
(3) Cutting dry agar into suitable size, rolling into a roll, wrapping a layer of cigarette forming paper (see figures 1-2) outside the roll to obtain a cigarette cooling part 3-A, wherein the length of the part is 20mm, and the outer diameter is 22.0 mm.
Examples of the experiments
According to the figure 3, the cigarette cooling parts 3-1, 3-2, 3-3, 3-4 and 3-A and the conventional cigarette product heating part 1 (the length is 15mm), the cigarette cooling part 2 (the wall thickness is 1mm, the length is 5mm and the outer diameter is 22mm) and the cigarette filtering part 4 (the length is 5mm and the outer diameter is 22mm) made of cellulose acetate tow are respectively assembled into the heating non-combustible cigarettes C1, C2, C3, C4 and CA.
The heated and nonflammable cigarettes C1, C2, C3, C4 and CA were subjected to heated smoking, and the temperatures at the temperature measuring points 10, 20, 30 and 40 shown in fig. 3 were measured during smoking, and the results are shown in table 1.
TABLE 1
As can be seen from Table 1, the cooling effect of the cooling part for tobacco of the present invention is significantly better than that of the cooling part for tobacco 3-A prepared by preparing dry agar by other methods. Therefore, the cooling effect of the cooling part for the cigarette is more remarkable.
It should be understood that the above examples are only for clarity of illustration and are not intended to limit the embodiments. Other variations and modifications will be apparent to persons skilled in the art in light of the above description. And are neither required nor exhaustive of all embodiments. And obvious variations or modifications therefrom are within the scope of the invention.
Claims (31)
1. A cooling part for cigarettes comprises an inner core and a packaging layer wrapped outside the inner core; the inner core is made of a cooling material for cigarettes, and is a winding drum formed by winding a layered cooling material for cigarettes;
the cooling material for the cigarette is prepared by the following steps (1), (2) and (3):
(1) mixing agar, water, a carbon material and a first substance under a boiling condition to obtain a first mixture; wherein the weight ratio of the agar to the water is 0.5-5: 1, and the specific surface area of the carbon material is 100-3000 m2The one-dimensional carbon material/g and/or the specific surface area is 100-3000 m2A two-dimensional carbon material per gram, wherein the first substance is at least one selected from the group consisting of silica having a Mohs hardness of 5 to 8, clay having a Mohs hardness of 1 to 4, and nanocellulose;
(2) freezing the first mixture in liquid nitrogen or at-60 to-15 ℃ to obtain a solid;
(3) and (3) freeze-drying the solid obtained in the step (2) at the temperature of-80 to-15 ℃, the vacuum degree of freeze-drying is 0.2 to 5MPa, and the freeze-drying time is 10 to 48 hours to obtain a dried substance.
2. The cooling part for tobacco according to claim 1, wherein the thickness of the layered cooling material for tobacco is 0.2-3 mm.
3. The tobacco cooling member of claim 1, wherein the wrapping layer is a plug wrap.
4. The cooling member for tobacco according to claim 1, wherein the outer diameter of the cooling member for tobacco is 4 to 50 mm.
5. The cooling element for tobacco of claim 1, wherein the step of preparing the cooling material for tobacco, between steps (1) and (2), further comprises:
(1-1) mixing the first mixture with essence to obtain a second mixture, and freezing in the step (2).
6. The cooling member for tobacco according to claim 1, wherein in the step (1), the weight ratio of agar to water is 1 to 3:1.
7. The cooling member for tobacco according to claim 1, wherein in the step (1), the weight of the carbon material is 8% to 90% of the sum of the weight of the agar and the weight of the water.
8. The cooling member for tobacco according to claim 1, wherein in the step (1), the weight of the carbon material is 10% to 70% of the sum of the weight of the agar and the weight of the water.
9. The cooling member for tobacco according to claim 1, wherein in the step (1), the carbon material has a specific surface area of 100 to 3000m2One-dimensional carbon material per gram.
10. The cooling member for tobacco according to claim 1, wherein in step (1), the one-dimensional carbon material is activated carbon fiber.
11. The cooling member for tobacco according to claim 1, wherein in step (1), the two-dimensional carbon material is graphene oxide and/or expanded graphite.
12. The cooling member for tobacco according to claim 1, wherein in the step (1), the weight of the first substance is 10% to 90% of the sum of the weight of the agar and the weight of the water.
13. The cooling member for tobacco according to claim 1, wherein in the step (1), the weight of the first substance is 12% to 70% of the sum of the weight of the agar and the weight of the water.
14. The cooling member for tobacco according to claim 1, wherein in step (1), the clay is at least one selected from kaolinite group clay, montmorillonite group clay, illite group clay and chlorite group clay.
15. The cooling member for tobacco according to claim 1, wherein in step (1), the nanocellulose is selected from at least one of cellulose microfibrils, nanocellulose crystals and bacterial nanocellulose.
16. The cooling member for tobacco according to claim 1, wherein in the step (1), the first substance is at least one selected from the group consisting of silica having a Mohs hardness of 5 to 8, kaolinite group clay having a Mohs hardness of 1 to 4, and cellulose microfibrils.
17. The cooling member for tobacco according to claim 15, wherein the cellulose microfibrils are prepared by the following steps (i), (iii), (iv):
(i) mixing microcrystalline cellulose with an acid solution to obtain a mixture containing cellulose;
(iii) (ii) performing solid-liquid separation on the mixture obtained in the step (i) to obtain a solid phase substance;
(iv) and washing and drying the solid phase substance to obtain the cellulose microfibril.
18. The cooling member for a cigarette of claim 17, wherein the step of preparing the cellulose microfibrils further comprises, between steps (i) and (iii):
(ii) (iv) subjecting the mixture obtained in step (i) to ultrasonic treatment to obtain a mixture for solid-liquid separation in step (iii).
19. The cooling member for tobacco of claim 17, comprising one or more of the following (a) to (i):
(a) in the step (i), the crystallinity of the microcrystalline cellulose is 40-85%;
(b) in the step (i), the ratio of the microcrystalline cellulose to the acid solution is 1-10: 1 g/mL;
(c) in step (i), the acid solution is a sulfuric acid solution;
(d) in the step (i), the mixing time is 0.5-5 hours;
(e) the content of cellulose in the mixture obtained in the step (i) is 1-10 g/mL;
(f) in step (iii), solid-liquid separation is performed by filtration;
(g) in step (iv), washing with water;
(h) in step (iv), the number of washing is one or more;
(i) in the step (iv), drying is performed at normal temperature.
20. The cooling member for tobacco use according to claim 18, wherein in step (ii), the time of the ultrasonic treatment is 1 to 30 minutes.
21. The cooling member for tobacco according to claim 19, wherein in item (a), in step (i), the average degree of polymerization of the microcrystalline cellulose is 60 to 300.
22. The cooling member for tobacco according to claim 19, wherein in item (c), the concentration of the sulfuric acid solution in step (i) is 50% W/W to 80% W/W.
23. The cooling member for tobacco according to claim 19, wherein in item (h), in step (iv), the number of washing times is two.
24. The cooling element for tobacco of claim 1, wherein the method for preparing the cooling material for tobacco further comprises, between steps (1) and (2), step (1-2): the first mixture was allowed to stand.
25. The cooling member for tobacco of claim 5, comprising one or more of the following A-D:
A. between the steps (1-1) and (2), the method further comprises the step (1-2): standing the second mixture;
B. in the step (1-1), the weight of the essence is 12-70% of the sum of the weight of the agar and the weight of the water in the step (1);
C. in the step (1-1), the mixing temperature is 15-50 ℃;
D. in the step (1-1), the mixing time is 2-60 minutes.
26. The cooling member for tobacco according to claim 24 or 25, wherein the temperature of standing in step (1-2) is 10 ℃ to 50 ℃.
27. The cooling member for tobacco according to claim 24 or 25, wherein in the step (1-2), the standing time is 5 to 48 hours.
28. A smoking article comprising the cooling member for a cigarette of any one of claims 1 to 27.
29. A smoking article according to claim 28, which is a heat non-combustible cigarette.
30. Use of the cooling member for tobacco of any one of claims 1 to 27 in the manufacture of a tobacco product.
31. Use according to claim 30, wherein the tobacco product is a heat-not-burn cigarette.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201910097840.7A CN109820232B (en) | 2019-01-31 | 2019-01-31 | Method for preparing cooling material for cigarettes, prepared cooling material for cigarettes and application |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201910097840.7A CN109820232B (en) | 2019-01-31 | 2019-01-31 | Method for preparing cooling material for cigarettes, prepared cooling material for cigarettes and application |
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| US20060090769A1 (en) * | 2004-11-02 | 2006-05-04 | Philip Morris Usa Inc. | Temperature sensitive powder for enhanced flavor delivery in smoking articles |
| PL2844091T3 (en) * | 2012-04-30 | 2019-03-29 | Philip Morris Products S.A. | Smoking article mouthpiece including aerogel |
| CN104223359A (en) * | 2014-08-22 | 2014-12-24 | 云南中烟工业有限责任公司 | Novel cigarette heater provided with aerogel heat-insulating layer |
| CN105837861B (en) * | 2016-04-03 | 2018-06-19 | 苏鑫 | A kind of composite natral high-molecular gel class material |
| CN108618199B (en) * | 2018-04-19 | 2021-03-26 | 云南巴菰生物科技有限公司 | Cigarette with heating and non-combustion functions for annular heating and non-combustion device |
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