CN113197333B - Preparation method of cooling element for heating cigarettes - Google Patents

Preparation method of cooling element for heating cigarettes Download PDF

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Publication number
CN113197333B
CN113197333B CN202110467721.3A CN202110467721A CN113197333B CN 113197333 B CN113197333 B CN 113197333B CN 202110467721 A CN202110467721 A CN 202110467721A CN 113197333 B CN113197333 B CN 113197333B
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cooling element
heating
adhesive
preparing
mixed solution
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CN113197333A (en
Inventor
万纪强
高明奇
胡少东
鲁平
李国政
赵学斌
冯晓民
崔春
程向红
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China Tobacco Henan Industrial Co Ltd
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China Tobacco Henan Industrial Co Ltd
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    • A—HUMAN NECESSITIES
    • A24—TOBACCO; CIGARS; CIGARETTES; SIMULATED SMOKING DEVICES; SMOKERS' REQUISITES
    • A24C—MACHINES FOR MAKING CIGARS OR CIGARETTES
    • A24C5/00—Making cigarettes; Making tipping materials for, or attaching filters or mouthpieces to, cigars or cigarettes
    • A24C5/01—Making cigarettes for simulated smoking devices
    • A—HUMAN NECESSITIES
    • A24—TOBACCO; CIGARS; CIGARETTES; SIMULATED SMOKING DEVICES; SMOKERS' REQUISITES
    • A24D—CIGARS; CIGARETTES; TOBACCO SMOKE FILTERS; MOUTHPIECES FOR CIGARS OR CIGARETTES; MANUFACTURE OF TOBACCO SMOKE FILTERS OR MOUTHPIECES
    • A24D3/00—Tobacco smoke filters, e.g. filter-tips, filtering inserts; Filters specially adapted for simulated smoking devices; Mouthpieces for cigars or cigarettes
    • A24D3/02—Manufacture of tobacco smoke filters
    • A24D3/0204—Preliminary operations before the filter rod forming process, e.g. crimping, blooming
    • 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
    • A24D3/0229—Filter rod forming processes
    • 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
    • A24D3/025—Final operations, i.e. after the filter rod forming process
    • A24D3/0254—Cutting means
    • A—HUMAN NECESSITIES
    • A24—TOBACCO; CIGARS; CIGARETTES; SIMULATED SMOKING DEVICES; SMOKERS' REQUISITES
    • A24D—CIGARS; CIGARETTES; TOBACCO SMOKE FILTERS; MOUTHPIECES FOR CIGARS OR CIGARETTES; MANUFACTURE OF TOBACCO SMOKE FILTERS OR MOUTHPIECES
    • 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

Landscapes

  • Paper (AREA)
  • Adhesives Or Adhesive Processes (AREA)

Abstract

The invention discloses a preparation method of a cooling element for heating cigarettes, which comprises the following steps: dissolving polyethylene glycol and at least one of cellulose acetate, polyvinyl alcohol, gelatin and chitosan according to the mass ratio of (5-9) to (1-5), and then making a membrane from the mixed solution and drying to obtain a phase-change membrane; mixing the soybean protein isolate and water according to the mass ratio of (6-7) to (3-4), and adding inorganic nano particles and glue solution to obtain an adhesive; placing the phase change film between two layers of aluminum foils, coating adhesive between the phase change film and the aluminum foils, and performing hot press molding to obtain a composite material; and embossing and gathering and wrapping the composite material, and cutting. The phase change film is arranged in the middle of the cooling element by adopting a sandwich structure, so that the contact between the smoke and the liquid polyethylene glycol can be avoided, and the negative influence of the polyethylene glycol on the smoke suction quality is avoided. Meanwhile, the metal aluminum foil improves the heat conductivity coefficient of the cooling element, thereby being beneficial to the rapid heat transfer and improving the cooling efficiency.

Description

Preparation method of cooling element for heating cigarettes
Technical Field
The invention relates to the field of heating cigarettes, in particular to a method for preparing a cooling element for heating cigarettes.
Background
In recent years, due to the improvement of health consciousness of people, novel tobacco products such as electronic cigarettes, buccal cigarettes and heating cigarettes are widely concerned and paid attention.
The traditional cigarette releases smoke by burning tobacco components, while the heating cigarette releases smoke by heating tobacco components, and the smoke release amount and the smoke concentration of the traditional cigarette are lower than those of the traditional cigarette. In order to improve the mouth feel of the smoke at the entrance, the length of the cigarette which heats the non-combustible cigarette is shorter, and the temperature reduction range of the smoke in the transmission process is smaller. In addition, the heating temperature is low, so that the water content of the smoke is high, the sensory temperature of the smoke at the inlet is higher than that of the traditional cigarette, the thermal irritation of the smoke is strong, a certain burning sensation is generated when a consumer smokes and heats a non-combustible cigarette, and the smoking quality is seriously influenced.
Therefore, how to effectively reduce the temperature of the inlet smoke and improve the smoking sensory quality is a technical problem which needs to be solved urgently by the technical personnel in the field.
Disclosure of Invention
One object of the present invention is to provide a new technical solution for heating cigarettes which effectively reduces the temperature of the inlet smoke and improves the sensory quality of smoking.
According to the first aspect of the invention, the preparation method of the cooling element for heating the cigarettes, which can effectively reduce the temperature of the inlet smoke and improve the smoking sensory quality, is provided.
The preparation method of the cooling element for heating the cigarette comprises the following steps:
step (1): dissolving polyethylene glycol and at least one of cellulose acetate, polyvinyl alcohol, gelatin and chitosan according to the mass ratio of (5-9) to (1-5) to obtain a mixed solution, and preparing and drying the mixed solution to obtain a phase-change film;
step (2): mixing the soybean protein isolate and water according to the mass ratio of (6-7) to (3-4), adding inorganic nano particles and glue solution, and uniformly mixing to obtain the adhesive, wherein the inorganic nano particles are SiO 2 、Al 2 O 3 And CaCO 3 At least one of;
and (3): placing the phase change film between two layers of aluminum foils, coating adhesive between the phase change film and the aluminum foils, and performing hot press molding to obtain a composite material;
and (4): and embossing and gathering and wrapping the composite material, and cutting to obtain the cooling element for heating the cigarette.
Optionally, the solvent of the mixed solution in the step (1) is at least one of water, acetone, ethanol and an acetic acid aqueous solution.
Optionally, the molecular weight of the polyethylene glycol is 4000, 6000, 8000 or 10000.
Optionally, in the step (1), a tape casting film forming process is adopted to form the film from the mixed solution.
Optionally, the addition amount of the inorganic nanoparticles in the adhesive in the step (2) is 0.5wt% to 2wt%, and the particle size is 30nm to 200nm.
Optionally, the glue solution in the adhesive in the step (2) is natural latex, and the addition amount is 5wt% to 10wt%.
Optionally, the mixing in the step (2) is specifically as follows:
heated and stirred at 80 ℃ for 2h.
Optionally, the amount of the adhesive applied in the step (3) is 1g/m 2 -2g/m 2 The hot pressing temperature is 60-80 ℃, and the pressure is 0.5-2 MPa.
Optionally, the thickness of the aluminum foil in the step (3) is 10um-30um.
Optionally, the embossing process in step (4) has a width of 1mm to 3mm.
The cooling element for heating the cigarette adopts a sandwich structure to arrange the phase change film in the middle of the cooling element, so that the contact between the smoke and the liquid polyethylene glycol can be avoided, and the negative influence of the polyethylene glycol on the smoke suction quality is avoided. Meanwhile, the metal aluminum foil improves the heat conductivity coefficient of the cooling element, thereby being beneficial to the rapid heat transfer and improving the cooling efficiency.
Detailed Description
Various exemplary embodiments of the present invention will now be described in detail. It should be noted that: the relative arrangement of the components and steps, the numerical expressions and numerical values set forth in these embodiments do not limit the scope of the present invention unless specifically stated otherwise.
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.
Techniques, methods, and apparatus known to those of ordinary skill in the relevant art may not be discussed in detail but are intended to be part of the specification where appropriate.
In all examples shown and discussed herein, any particular value should be construed as merely illustrative, and not limiting. Thus, other examples of the exemplary embodiments may have different values.
The preparation method of the cooling element for heating the cigarettes comprises the following steps:
step (1): dissolving polyethylene glycol and at least one of cellulose acetate, polyvinyl alcohol, gelatin and chitosan according to the mass ratio of (5-9) to (1-5) to obtain a mixed solution, and preparing a membrane from the mixed solution and drying to obtain the phase-change membrane. In practice, the solution may be heated and stirred during the dissolution process.
In order to improve the cooling efficiency, the solvent of the mixed solution in the step (1) is at least one of water, acetone, ethanol and acetic acid aqueous solution.
In order to improve the cooling efficiency, the molecular weight of the polyethylene glycol is 4000, 6000, 8000 or 10000.
In order to improve the cooling efficiency, the mixed solution is prepared into a film by adopting a casting film forming process in the step (1).
Step (2): mixing the soybean protein isolate and water according to the mass ratio of (6-7) to (3-4), adding inorganic nano particles and glue solution, and uniformly mixing to obtain the adhesive, wherein the inorganic nano particles are SiO 2 、Al 2 O 3 And CaCO 3 At least one of (1).
In order to improve the cooling efficiency, the addition amount of the inorganic nanoparticles in the adhesive in the step (2) is 0.5-2 wt%, and the particle size is 30-200 nm.
In order to improve the cooling efficiency, the glue solution in the adhesive in the step (2) is natural latex, and the addition amount is 5-10 wt%.
In order to improve the cooling efficiency, the mixing in the step (2) is specifically as follows:
heated and stirred at 80 ℃ for 2h.
And (3): and (3) placing the phase change film between the two layers of aluminum foils, coating adhesive between the phase change film and the aluminum foils, and performing hot press molding to obtain the composite material.
Polyethylene glycol as a typical phase-change material can absorb smoke heat through a solid-liquid phase-change process, however, polyethylene glycol is slightly bitter in taste, and smoke is contacted with liquid polyethylene glycol when passing through, and part of polyethylene glycol is transferred into smoke, so that the sensory quality of the smoke is negatively affected. The cooling element for heating the cigarette adopts a sandwich structure to arrange the phase change film in the middle of the cooling element, so that the contact between the smoke and the liquid polyethylene glycol can be avoided, and the negative influence of the polyethylene glycol on the smoke suction quality is avoided.
In order to improve the cooling efficiency, the amount of the adhesive applied in the step (3) is 1g/m 2 -2g/m 2 The hot pressing temperature is 60-80 ℃, and the pressure is 0.5-2 MPa.
In order to improve the cooling efficiency, the thickness of the aluminum foil in the step (3) is 10um-30um.
And (4): and embossing and gathering and wrapping the composite material, and cutting to obtain the cooling element for heating the cigarette.
In order to improve the cooling efficiency, the embossing treatment in the step (4) has a width of 1mm to 3mm.
When the heated cigarette smoke passes through the cooling element, the temperature reduction range can reach more than 40 ℃, and the temperature of the inlet smoke is lower than 50 ℃.
The experimental procedures used in the examples below are conventional unless otherwise specified, the materials and reagents used therein are commercially available, and the equipment used in the experiments are well known to those skilled in the art without otherwise specified.
Example 1
Weighing 80 parts of PEG4000 and 20 parts of cellulose acetate, adding the mixture into acetone, heating and stirring at 50 ℃ to obtain a mixed solution, preparing a membrane from the mixed solution by using a tape casting method, and drying in vacuum at 40 ℃ for 24 hours to obtain the phase-change membrane.
Weighing 70 parts of soy protein isolate, mixing with 30 parts of water, adding 1wt% of SiO 2 The particles (the particle size is 100 nm) and 5wt% of natural latex are heated and stirred for 2 hours at the temperature of 80 ℃ to obtain the adhesive.
And (3) placing the phase change film between two layers of aluminum foils, wherein the thickness of the aluminum foil is 30 mu m, forming an aluminum foil/phase change film/aluminum foil sandwich structure, coating adhesive in the middle of the sandwich layer, and then carrying out hot-pressing composite molding to obtain the composite material. Wherein the application amount of the adhesive is 1g/m 2 The hot pressing temperature is 80 ℃ and the pressure is 1MPa.
The composite material was subjected to an embossing process with an embossing width of 2mm. Gathering and wrapping the paper material, and cutting to obtain the cooling element S1 for heating the cigarette.
The prepared cooling element S1 is applied to heating cigarettes, the smoke temperature reduction range is 40 ℃, the inlet smoke temperature is 48 ℃, and the smoke suction quality is effectively improved.
Example 2
Weighing 70 parts of PEG6000 and 30 parts of polyvinyl alcohol 1799, adding into water, heating and stirring at 80 ℃ to obtain a mixed solution, preparing a membrane from the mixed solution by using a tape casting method, and drying in vacuum at 40 ℃ for 24 hours to obtain the phase-change membrane.
Weighing 70 parts of soy protein isolate, mixing with 30 parts of water, adding 1wt% of SiO 2 The particles (the particle size is 100 nm) and 5wt% of natural latex are heated and stirred for 2 hours at the temperature of 80 ℃ to obtain the adhesive.
And (3) placing the phase change film between two layers of aluminum foils, wherein the thickness of the aluminum foil is 30 mu m, forming an aluminum foil/phase change film/aluminum foil sandwich structure, coating adhesive in the middle of the sandwich layer, and then carrying out hot-pressing composite molding to obtain the composite material. Wherein the application amount of the adhesive is 1g/m 2 The hot pressing temperature is 80 ℃ and the pressure is 1MPa.
The composite material was subjected to an embossing process with an embossing width of 2mm. And gathering and wrapping the paper materials, and cutting to obtain the cooling element S2 for heating the non-combustible cigarettes.
The prepared cooling element S2 is applied to heating cigarettes, the smoke temperature is reduced to 42 ℃, the inlet smoke temperature is 47 ℃, and the smoke suction quality is effectively improved.
Example 3
Weighing 80 parts of PEG4000 and 20 parts of polyvinyl alcohol 1799, adding the mixture into water, heating and stirring the mixture at 80 ℃ to obtain a mixed solution, preparing a membrane from the mixed solution by using a tape casting method, and drying the membrane in vacuum at 40 ℃ for 24 hours to obtain the phase-change membrane.
Weighing 70 parts of soybean protein isolate, mixing with 30 parts of water, adding 2wt% of CaCO 3 The particles (the particle size is 70 nm) and 5wt% of natural latex are heated and stirred for 2 hours at the temperature of 80 ℃ to obtain the adhesive.
And (3) placing the phase change film between two layers of aluminum foils, wherein the thickness of the aluminum foil is 20 mu m, forming an aluminum foil/phase change film/aluminum foil sandwich structure, coating adhesive in the middle of the sandwich layer, and then carrying out hot-pressing composite molding to obtain the composite material. Wherein the application amount of the adhesive is 1g/m 2 The hot pressing temperature is 80 ℃ and the pressure is 1MPa.
The composite material was subjected to an embossing process with an embossing width of 2mm. And gathering and wrapping the cigarette by paper materials, and cutting the cigarette into sections to obtain a cooling element S3 for heating the cigarette.
The prepared cooling element S3 is applied to heating cigarettes, the smoke temperature reduction range is 45 ℃, the inlet smoke temperature is 49 ℃, and the smoke suction quality is effectively improved.
Example 4
Weighing 70 parts of PEG4000 and 30 parts of cellulose acetate, adding the mixture into acetone, heating and stirring at 50 ℃ to obtain a mixed solution, preparing a membrane from the mixed solution by using a tape casting method, and drying in vacuum at 40 ℃ for 24 hours to obtain the phase-change membrane.
Weighing 70 parts of soy protein isolate, mixing with 30 parts of water, adding 1.5wt% of Al 2 O 3 The particles (with the particle size of 50 nm) and 5wt% of natural latex are heated and stirred for 2 hours at the temperature of 80 ℃ to obtain the adhesive.
And (3) placing the phase change film between two layers of aluminum foils, wherein the thickness of the aluminum foil is 15 mu m, forming an aluminum foil/phase change film/aluminum foil sandwich structure, coating adhesive in the middle of the sandwich layer, and then carrying out hot-pressing composite molding to obtain the composite material. Wherein the application amount of the adhesive is 1.5g/m 2 The hot pressing temperature is 60 ℃ and the pressure is 1MPa.
The composite material was subjected to an embossing process with an embossing width of 2mm. And gathering and wrapping the cigarette by paper materials, and cutting the cigarette into sections to obtain a cooling element S4 for heating the cigarette.
The prepared cooling element S4 is applied to heating cigarettes, the smoke temperature is reduced to 43 ℃, the inlet smoke temperature is 48 ℃, and the smoke suction quality is effectively improved.
Example 5
Weighing 70 parts of PEG4000 and 30 parts of cellulose acetate, adding the mixture into acetone, heating and stirring at 50 ℃ to obtain a mixed solution, preparing a membrane from the mixed solution by using a tape casting method, and drying in vacuum at 40 ℃ for 24 hours to obtain the phase-change membrane.
Weighing 70 parts of soy protein isolate, mixing with 30 parts of water, adding 1wt% of SiO 2 The particles (the particle size is 100 nm) and 5wt% of natural latex are heated and stirred for 2 hours at the temperature of 80 ℃ to obtain the adhesive.
And (3) placing the phase change film between two layers of aluminum foils, wherein the thickness of the aluminum foil is 25 mu m, forming an aluminum foil/phase change film/aluminum foil sandwich structure, coating adhesive in the middle of the sandwich layer, and then carrying out hot-pressing composite molding to obtain the composite material. Wherein the application amount of the adhesive is 2g/m 2 The hot pressing temperature is 70 ℃ and the pressure is 2MPa.
The composite material was subjected to an embossing process with an embossing width of 2mm. Gathering and wrapping the cigarette by paper materials, and cutting the cigarette into sections to obtain the cooling element S5 for heating the cigarette.
The prepared cooling element S5 is applied to heating cigarettes, the smoke temperature is reduced to 46 ℃, the inlet smoke temperature is 45 ℃, and the smoke suction quality is effectively improved.
Example 6
Weighing 70 parts of PEG4000 and 30 parts of cellulose acetate, adding the mixture into acetone, heating and stirring at 50 ℃ to obtain a mixed solution, preparing a membrane from the mixed solution by using a tape casting method, and drying in vacuum at 40 ℃ for 24 hours to obtain the phase-change membrane.
Weighing 70 parts of soy protein isolate, mixing with 30 parts of water, adding 1wt% of SiO 2 Heating and stirring the nano particles (the particle size is 100 nm) and 7wt% of natural latex solution at 80 ℃ for 2 hours to obtain the adhesive.
And (3) placing the phase change film between two layers of aluminum foils, wherein the thickness of the aluminum foil is 25 mu m, forming an aluminum foil/phase change film/aluminum foil sandwich structure, coating adhesive in the middle of the sandwich layer, and then carrying out hot-pressing composite molding to obtain the composite material. Wherein the application amount of the adhesive is 1.5g/m 2 The hot pressing temperature is 80 ℃ and the pressure is 1MPa.
And carrying out embossing treatment on the obtained composite cooling material, wherein the embossing width is 3mm. And gathering and wrapping the cigarette by paper materials, and cutting the cigarette into sections to obtain the cooling element S6 for heating the cigarette.
The prepared cooling element S6 is applied to heating cigarettes, the smoke temperature reduction range is 41 ℃, the inlet smoke temperature is 49 ℃, and the smoke suction quality is effectively improved.
Although some specific embodiments of the present invention have been described in detail by way of example, it should be understood by those skilled in the art that the above examples are for illustration only and are not intended to limit the scope of the invention. It will be appreciated by those skilled in the art that modifications may be made to the above embodiments without departing from the scope and spirit of the invention. The scope of the invention is defined by the appended claims.

Claims (7)

1. A preparation method of a cooling element for heating cigarettes is characterized by comprising the following steps:
step (1): dissolving polyethylene glycol and at least one of cellulose acetate, polyvinyl alcohol, gelatin and chitosan according to the mass ratio of (5-9) to (1-5) to obtain a mixed solution, and preparing and drying the mixed solution to obtain a phase-change film;
step (2): mixing soybean protein isolate and water according to the mass ratio of (6-7) to (3-4), adding inorganic nano particles and glue solution, heating and stirring at 80 ℃ for 2h, and uniformly mixing to obtain the adhesive, wherein the inorganic nano particles are SiO 2 、Al 2 O 3 And CaCO 3 At least one of the inorganic nano particles, the addition amount of the inorganic nano particles is 0.5wt% -2wt%, the particle size is 30nm-200nm, the glue solution is natural latex, and the addition amount is 5wt% -10wt%;
and (3): placing the phase change film between two layers of aluminum foils, coating adhesive between the phase change film and the aluminum foils, and performing hot press molding to obtain a composite material;
and (4): and embossing and gathering and wrapping the composite material, and cutting to obtain the cooling element for heating the cigarette.
2. The method for preparing a cooling element for heating cigarettes according to claim 1, wherein the solvent of the mixed solution in the step (1) is at least one of water, acetone, ethanol and acetic acid aqueous solution.
3. The method of making a cooling element for a heated cigarette of claim 1 wherein the polyethylene glycol has a molecular weight of 4000, 6000, 8000 or 10000.
4. The method for preparing the cooling element for heating the cigarettes according to claim 1, wherein the mixed solution is prepared into the film by a tape casting film forming process in the step (1).
5. The method for preparing a cooling element for heating cigarettes according to claim 1, wherein the applying amount of the adhesive in the step (3) is 1g/m 2 -2g/m 2 The hot pressing temperature is 60-80 ℃, and the pressure is 0.5-2 MPa.
6. The method for preparing a cooling element for heating cigarettes according to claim 1, wherein the thickness of the aluminum foil in the step (3) is 10-30 um.
7. The method for preparing a cooling element for heating cigarettes according to claim 1, wherein the embossing in the step (4) has a width of 1mm to 3mm.
CN202110467721.3A 2021-04-28 2021-04-28 Preparation method of cooling element for heating cigarettes Active CN113197333B (en)

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* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN1974706A (en) * 2006-12-11 2007-06-06 江南大学 Nanometer biological adhesive and its production process
CN110028773A (en) * 2019-03-25 2019-07-19 云南养瑞科技集团有限公司 Sheet material with cooling function and its application in aerosol generation product
CN111602846A (en) * 2020-04-27 2020-09-01 深圳烟草工业有限责任公司 Cigarette smoke cooling particles and preparation method and application thereof
CN112480456B (en) * 2020-12-22 2023-03-14 苏州热象纳米科技有限公司 Aerogel-containing phase change film and preparation method and application method thereof

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