CN108851193B - Preparation method of heating non-combustible core material - Google Patents
Preparation method of heating non-combustible core material Download PDFInfo
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- CN108851193B CN108851193B CN201810526746.4A CN201810526746A CN108851193B CN 108851193 B CN108851193 B CN 108851193B CN 201810526746 A CN201810526746 A CN 201810526746A CN 108851193 B CN108851193 B CN 108851193B
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- A—HUMAN NECESSITIES
- A24—TOBACCO; CIGARS; CIGARETTES; SIMULATED SMOKING DEVICES; SMOKERS' REQUISITES
- A24B—MANUFACTURE OR PREPARATION OF TOBACCO FOR SMOKING OR CHEWING; TOBACCO; SNUFF
- A24B15/00—Chemical features or treatment of tobacco; Tobacco substitutes, e.g. in liquid form
- A24B15/10—Chemical features of tobacco products or tobacco substitutes
- A24B15/16—Chemical features of tobacco products or tobacco substitutes of tobacco substitutes
Abstract
The invention discloses a preparation method of a heating non-combustible core material, which comprises the steps of heating and mixing a certain amount of edible gum and deionized water to prepare a solution A; then heating and mixing with a certain amount of heat-conducting salt powder to prepare coating liquid B; and finally, coating the coating liquid B on the surface of the cigarette core material with the smoke agent, and drying and curing at low temperature in vacuum to obtain the cigarette core material which can not burn by heating. The cigarette core material prepared by the preparation method of the heating non-combustible cigarette core material has excellent heat transfer performance, cigarettes rolled by the cigarette core material are heated without burning, the smoke quantity is large, the fragrance components escape uniformly and stably, the cigarette fragrance is rich and soft, the tensile strength of the cigarette core material is effectively improved, the cigarette core material is easier to cut into strips and form, and the cigarette core material has strong practicability and wide applicability.
Description
Technical Field
The invention relates to a preparation method of a tobacco core material, in particular to a preparation method of a tobacco core material which is not combusted by heating in the technical field of tobacco.
Background
In recent years, with the increasing concern about smoking and health, the development of new tobacco products capable of effectively reducing the release amount of harmful components in tobacco has become the key development point of tobacco industry in various countries. Among them, representative novel tobacco products include electronic cigarettes and heat-not-burn cigarette products.
The cigarette product is heated by a heating source (the temperature is generally not more than 500 ℃), and the nicotine and the flavor components contained in the cigarette core material are heated and volatilized to generate smoke to meet the requirements of consumers. Because the cigarette core material is in a heating state but not a combustion state, harmful ingredients generated by high-temperature combustion of the traditional cigarette are greatly reduced in the cigarette which is not heated and combusted, and the harm of the product to the health of consumers is effectively reduced. Therefore, heat not burn smoking articles are becoming increasingly popular with consumers.
At present, heating modes for heating non-burning cigarettes in the mainstream include an electric heating type and a carbon heating type, and a cigarette core material is usually manufactured by using a tobacco sheet.
The electric heating type heating non-combustion cigarette product heats the cigarette core material to volatilize nicotine and flavor components by heating the center or the annular wall of the cigarette core. However, because of the poor heat transfer performance of the core material, heat cannot be rapidly diffused to the whole core material during heating, so that thin sheets near the heat source are easily overheated to generate a scorching phenomenon, while thin sheets far away from the heat source are insufficiently heated, so that the smoke amount and the fragrance components are unevenly released, and occasionally peculiar smell is generated, thereby seriously affecting the sensory quality of the product.
In addition, the cigarette core materials produced by different process methods have different structures and performances, the loading amounts of smoke agents and flavor components are different, the whole cigarette core material suitable for heating non-burning cigarettes is limited, and the utilization rate of the cigarette core material is low.
Therefore, the development of a core material having high thermal conductivity to improve the quality of an electrically heated heat non-combustible smoking article has become an urgent problem in the industry.
Disclosure of Invention
In order to solve the defects of the prior art, the invention aims to provide a preparation method of a heating non-combustible smoke core material with high heat conductivity.
In order to achieve the above object, the present invention adopts the following technical solutions:
a method for preparing a heat non-combustible wick material, comprising the steps of:
s1, mixing edible gum and deionized water in a certain mass ratio, heating and stirring to prepare a transparent and flowable solution A;
s2, mixing heat-conducting salt powder and the solution A in a certain mass ratio, heating and stirring to prepare a heat-conducting salt coating liquid B;
and S3, uniformly coating the coating liquid B on the surface of the tobacco core material with the smoke agent according to a certain mass ratio, and carrying out vacuum low-temperature drying and curing treatment to obtain the heating non-combustible tobacco core material.
The edible gum in the step S1 is one or more of carrageenan, xanthan gum, guar gum, sodium alginate, gum arabic and pectin.
The heat conducting salt in the step S2 is a binary salt formed by sodium nitrate and potassium nitrate, or a ternary salt formed by sodium nitrate, sodium nitrite and potassium nitrate; the heat-conducting salt powder is sieved by a 40-100 mesh sieve.
The smoke generating agent in the step S3 is glycerin and/or propylene glycol.
The tobacco core material in the step S3 is one or more of tobacco powder, tobacco fragments, tobacco stems and plant fibers, and is manufactured by a paper making method, a thick pulp method or a rolling method.
The mass ratio of the edible gum to the deionized water in the step S1 is 1:1-1:50, and the heating temperature is 50-100 ℃.
The mass ratio of the heat-conducting salt powder to the solution A in the step S2 is 1:1-1: 10; the heating temperature is 200-250 ℃.
The mass ratio of the smoke agent in the cigarette core material of the step S3 is 15-25%.
In the step S3, the coating liquid B accounts for 10-50% of the mass of the cigarette core material; the coating mode comprises spraying, dipping and brushing.
The vacuum degree of the vacuum low-temperature drying treatment in the step S3 is 10-50Pa, the temperature is-20-20 ℃, and the drying time is 1-10 h.
The invention has the advantages that:
compared with the prior art, the preparation method of the heating non-combustible core material has the following advantages,
(1) through at cigarette core material surface evenly loaded heat conduction salt, effectively improve the heat conductivility of cigarette core material for when the heating source heated the cigarette core material, the heat diffusion was rapider, and the cigarette core homogeneity of being heated is showing and is improving.
(2) The tobacco core material is made from tobacco powder, tobacco fragments, tobacco stems, plant fibers and the like, is suitable for the tobacco core materials manufactured by a paper making method, a thick paste method and a rolling method, and improves the utilization rate of different types of tobacco core materials in heating non-combustible cigarettes.
(3) The cigarette finished product prepared by the heating non-combustible core material prepared by the method has large smoke amount, balanced and stable fragrance release and soft smoke, and compared with the existing product, the sensory quality of the cigarette finished product is obviously improved.
The cigarette core material prepared by the method has excellent heat transfer performance, cigarettes coiled by the cigarette core material are heated without burning, the smoke quantity is large, the fragrance components escape uniformly and stably, the cigarette fragrance is rich and soft, the tensile strength of the cigarette core material is effectively improved, the cigarette core material is easier to cut into strips and form, and the cigarette core material has strong practicability and wide applicability.
Detailed Description
The present invention will be described in detail with reference to the following embodiments.
Example 1
Weighing 50g of Arabic gum and 500g of deionized water, mixing, stirring and heating to 50 ℃, and fully and uniformly mixing the Arabic gum and the deionized water to obtain the edible gum solution A.
100g of heat conducting salt (binary salt) is ground and sieved by a 40-mesh sieve, the heat conducting salt powder is uniformly scattered in the edible gum solution A, the mixture is heated to 200 ℃ to melt the heat conducting salt, and the mixture is uniformly stirred to prepare a heat conducting salt coating liquid B.
Taking 2kg of the cigarette core material prepared by the papermaking method, uniformly adding glycerol according to 15% of the mass of the cigarette core material, and then uniformly spraying the heat-conducting salt coating liquid B on the surface of the cigarette core material. And (3) placing the treated tobacco core material in a vacuum low-temperature drying box, drying for 1h at the vacuum degree of 10Pa and the temperature of minus 20 ℃, and taking out to obtain the heating non-combustion tobacco core material loaded with heat-conducting salt.
Example 2
Weighing 50g of carrageenan and 250g of deionized water, mixing, stirring and heating to 100 ℃, and fully and uniformly mixing the carrageenan and the deionized water to obtain the edible gum solution A.
Grinding 30g of heat conducting salt (ternary salt) and sieving the ground heat conducting salt with a 100-mesh sieve, uniformly scattering the heat conducting salt powder in the edible gum solution A, heating the mixture to 250 ℃ to melt the heat conducting salt, and uniformly stirring the mixture to obtain a heat conducting salt coating liquid B.
660g of the cigarette core material prepared by the rolling method is uniformly added with propylene glycol according to 25 percent of the mass of the cigarette core material, and then is soaked in the heat-conducting salt coating liquid B. And after the heat-conducting salt coating liquid B is fully absorbed by the cigarette core material, placing the cigarette core material in a vacuum low-temperature drying box, drying for 10 hours at the temperature of 20 ℃ under the vacuum degree of 50Pa, and taking out to obtain the cigarette core material loaded with the heat-conducting salt and used for heating and not burning.
Example 3
Weighing 50g of guar gum and 100g of deionized water, mixing, stirring and heating to 80 ℃, and fully and uniformly mixing the guar gum and the deionized water to obtain the edible gum solution A.
Grinding 30g of heat conducting salt (binary salt) and sieving the ground heat conducting salt with a 80-mesh sieve, uniformly scattering the heat conducting salt powder in the edible gum solution A, heating the mixture to 230 ℃ to melt the heat conducting salt, and uniformly stirring the mixture to obtain a heat conducting salt coating liquid B.
Taking 600g of thick paste method tobacco core material, uniformly adding glycerol according to 20% of the mass of the tobacco core material, and then uniformly brushing the heat-conducting salt coating liquid B on the surface of the tobacco core material. And (3) placing the treated tobacco core material in a vacuum low-temperature drying box, drying for 5h at the temperature of minus 10 ℃ under the vacuum degree of 20Pa, and taking out to obtain the heating non-combustion tobacco core material loaded with heat-conducting salt.
Example 4
Weighing 50g of sodium alginate and 2500g of deionized water, mixing, stirring and heating to 80 ℃, and fully and uniformly mixing the sodium alginate and the deionized water to obtain the edible gelatin solution A.
1500g of heat conducting salt (ternary salt) is ground and sieved by a 60-mesh sieve, heat conducting salt powder is uniformly scattered in the edible gum solution A, the mixture is heated to 250 ℃ to melt the heat conducting salt, and the mixture is uniformly stirred to prepare heat conducting salt coating liquid B.
5kg of thick paste method tobacco core material is taken, a mixture of glycerol and propylene glycol (the mass ratio is 1:1) is uniformly added according to 18% of the mass of the tobacco core material, and then the heat-conducting salt coating liquid B is uniformly sprayed on the surface of the tobacco core material. And (3) placing the treated tobacco core material in a vacuum low-temperature drying box, drying for 8h at the temperature of 0 ℃ under the vacuum degree of 30Pa, and taking out to obtain the heating non-combustion tobacco core material loaded with heat-conducting salt.
Example 5
Weighing 50g of a mixture of carrageenan, guar gum and pectin (the mass ratio is 1:3:1) and 100g of deionized water, mixing, stirring and heating to 80 ℃, and fully and uniformly mixing the carrageenan, the guar gum and the pectin to obtain the edible gum solution A.
Grinding 30g of heat conducting salt (binary salt) and sieving the ground heat conducting salt with a 100-mesh sieve, uniformly scattering the heat conducting salt powder in the edible gum solution A, heating the mixture to 230 ℃ to melt the heat conducting salt, and uniformly stirring the mixture to obtain a heat conducting salt coating liquid B.
Taking 600g of thick paste method tobacco core material, uniformly adding glycerol according to 20% of the mass of the tobacco core material, and then uniformly brushing the heat-conducting salt coating liquid B on the surface of the tobacco core material. And (3) placing the treated tobacco core material in a vacuum low-temperature drying oven, drying for 6h at the temperature of minus 10 ℃ and the vacuum degree of 20Pa, and taking out to obtain the heating non-combustion tobacco core material loaded with heat-conducting salt.
Comparative example 1
Weighing 50g of Arabic gum and 500g of deionized water, mixing, stirring and heating to 50 ℃, and fully and uniformly mixing the Arabic gum and the deionized water to obtain the edible gum solution A.
Taking 2kg of the cigarette core material prepared by the papermaking method, uniformly adding glycerol according to 15% of the mass of the cigarette core material, and uniformly spraying the edible gelatin solution A on the surface of the cigarette core material. And (3) placing the treated tobacco core material in a vacuum low-temperature drying oven, drying for 1h at the vacuum degree of 10Pa and the temperature of minus 20 ℃, and taking out to obtain a tobacco core material control sample for heating and non-combustion.
Comparative example 2
Weighing 50g of carrageenan and 250g of deionized water, mixing, stirring and heating to 100 ℃, and fully and uniformly mixing the carrageenan and the deionized water to obtain the edible gum solution A.
660g of cigarette core material obtained by a rolling method is evenly added with propylene glycol according to 25 percent of the mass of the cigarette core material, and then the cigarette core material is soaked in the edible gelatin solution A. And (3) placing the treated tobacco core material in a vacuum low-temperature drying oven, drying for 10h at the temperature of 20 ℃ under the vacuum degree of 50Pa, and taking out to obtain a tobacco core material control sample for heating and non-combustion.
Comparative example 3
Weighing 50g of guar gum and 100g of deionized water, mixing, stirring and heating to 80 ℃, and fully and uniformly mixing the guar gum and the deionized water to obtain the edible gum solution A.
Taking 600g of thick paste method cigarette core material, uniformly adding glycerol according to 20% of the mass of the cigarette core material, and then uniformly brushing the edible gum solution A on the surface of the cigarette core material. And (3) placing the treated tobacco core material in a vacuum low-temperature drying oven, drying for 5h at the temperature of minus 10 ℃ under the vacuum degree of 20Pa, and taking out to obtain a tobacco core material control sample for heating and non-combustion.
Comparative example 4
Weighing 50g of a mixture of carrageenan, guar gum and pectin (the mass ratio is 1:3:1) and 100g of deionized water, mixing, stirring and heating to 80 ℃, and fully and uniformly mixing the carrageenan, the guar gum and the pectin to obtain the edible gum solution A.
Taking 600g of thick paste method cigarette core material, uniformly adding glycerol according to 20% of the mass of the cigarette core material, and then uniformly brushing the edible gum solution A on the surface of the cigarette core material. And (3) placing the treated tobacco core material in a vacuum low-temperature drying oven, drying for 6h at the temperature of minus 10 ℃ and the vacuum degree of 20Pa, and taking out to obtain a tobacco core material control sample for heating and non-combustion.
The core materials for the heat-not-combustible wick prepared in accordance with the present invention (examples 1 to 5) and the control (comparative examples 1 to 4) thereof were analyzed, and the respective thermal conductivities are shown in the following table 1:
TABLE 1
As can be seen from table 1 above, in the above,
the heat conductivity of the core material prepared in comparative examples 1-4 was 0.08-0.125 W.m-1·K-1And the heat conductivity of the tobacco core material is slightly improved after a certain amount of glycerin or propylene glycol is added to the surface of the tobacco core material. After the heat-conducting salt is used for treating the cigarette core material, the cigarette is formedThe surface of the core material is uniformly loaded with heat conducting salt, and the heat conductivity coefficient is obviously improved.
The core materials prepared in examples 1-5 had a thermal conductivity of at least 0.1849 W.m-1·K-1The maximum value reaches 0.2516 W.m-1·K-1. The thermal conductivity of the tobacco core material obtained in example 3 was increased by a factor of 2 to 3 compared to conventional tobacco sheets and the control.
The cigarette core material prepared by the invention is rolled into a cigarette which can not be burned by heating, the sensory quality of the cigarette after central heating is evaluated, the evaluation items are 'smoke amount', 'aroma', 'strength', 'miscellaneous gas', 'irritation' and 'aftertaste', and the evaluation range of each item is 0-10 min; wherein, the 'smoke amount', 'aroma', 'strength' and 'aftertaste' are positive indexes, and the 'offensive odor' and 'acrimony' are negative indexes (the higher the score is, the lower the offensive odor and acrimony are). The results of the smoke panel are shown in table 2 below:
TABLE 2
As can be seen from the above table 2,
the cigarette which is made of the conventional tobacco sheet and is not burnt by heating has poor heat conducting performance, basically no smoke is generated after heating, and the fragrance components and nicotine are less in heat escape. Because the heat transfer performance of the thin slice is poor, heat is gathered at the central part, the thin slice is burnt due to overheating, the miscellaneous gas and the irritation in the smoke are obvious, and the whole sensory quality is poor.
After the glycerin and the edible gum are added on the cigarette core material, the smoking effect of the cigarettes rolled by the several cigarette core materials in the comparative example is slightly increased, the fragrance and the strength are improved, the miscellaneous gas and the irritation are reduced, but the whole effect is not obviously improved.
After the heat-conducting salt is further added to the cigarette core material, the heat-conducting performance of the cigarette sample in the embodiment is remarkably improved, the smoke quantity is large, the escape degree of fragrance components and nicotine is high, the smoke is soft, the irritation is low, the integral sensory quality is good, and the expected effect of the invention is achieved.
The foregoing illustrates and describes the principles, general features, and advantages of the present invention. It should be understood by those skilled in the art that the above embodiments do not limit the present invention in any way, and all technical solutions obtained by using equivalent alternatives or equivalent variations fall within the scope of the present invention.
Claims (4)
1. A method for preparing a core material which does not burn when heated is characterized by comprising the following steps:
s1, mixing edible gum and deionized water in a certain mass ratio, heating and stirring to prepare a solution A;
s2, mixing heat-conducting salt powder and the solution A in a certain mass ratio, heating and stirring to prepare a coating liquid B;
s3, coating the coating liquid B on the surface of the tobacco core material with the smoke agent according to a certain mass ratio, and drying and curing at low temperature in vacuum to prepare the heating non-combustible tobacco core material;
the edible gum in the step S1 is one or more of carrageenan, xanthan gum, guar gum, sodium alginate, arabic gum and pectin;
the heat conducting salt in the step S2 is a binary salt formed by sodium nitrate and potassium nitrate or a ternary salt formed by sodium nitrate, sodium nitrite and potassium nitrate; the heat-conducting salt powder is sieved by a 40-100 mesh sieve;
the mass ratio of the edible gum to the deionized water in the step S1 is 1:1-1:50, and the heating temperature is 50-100 ℃;
the mass ratio of the heat-conducting salt powder to the solution A in the step S2 is 1:1-1: 10; the heating temperature is 200-250 ℃;
the mass ratio of the smoke agent in the cigarette core material of the step S3 is 15-25%;
in the step S3, the coating liquid B accounts for 10-50% of the mass of the cigarette core material; the coating mode comprises spraying, dipping and brushing.
2. The method of claim 1, wherein the smoking agent in step S3 is glycerin and/or propylene glycol.
3. The method of claim 1, wherein the core material of step S3 is one or more selected from tobacco powder, tobacco fragment, tobacco stem, and plant fiber, and is prepared by paper-making method, pulp-making method, or rolling method.
4. The method for preparing a material for heating a non-combustible wick according to claim 1, wherein the vacuum degree of the vacuum low temperature drying treatment in the step S3 is 10 to 50Pa, the temperature is-20 to 20 ℃, and the drying time is 1 to 10 hours.
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| CN111194941B (en) * | 2020-01-14 | 2022-06-28 | 深圳新火瑞升技术有限公司 | Application of heating aid in heating non-combustion smoking material and product |
| CN113545514A (en) * | 2020-04-23 | 2021-10-26 | 云南中烟工业有限责任公司 | Heating cigarette with self-bonding function |
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| US7290549B2 (en) * | 2003-07-22 | 2007-11-06 | R. J. Reynolds Tobacco Company | Chemical heat source for use in smoking articles |
| UA112440C2 (en) * | 2011-06-02 | 2016-09-12 | Філіп Морріс Продактс С.А. | SMOKING SOURCE OF HEAT FOR SMOKING PRODUCTS |
| CN102585779B (en) * | 2011-11-18 | 2014-02-05 | 牟邦志 | Preparation method of high-purity heat-conduction energy storage molten salt |
| CN103923618B (en) * | 2013-02-01 | 2019-01-11 | 深圳市爱能森科技有限公司 | Quartz sand composite multi-component nitric acid Molten Salt Heat Transfer heat storage medium and preparation method |
| CN104720113B (en) * | 2015-01-29 | 2018-05-04 | 湖南中烟工业有限责任公司 | One kind heats the tobacco product that do not burn |
| CN105433430B (en) * | 2015-12-04 | 2017-08-29 | 河南中烟工业有限责任公司 | A kind of tobacco-containing material for being applied to heating non-burning device and preparation method thereof |
| CN106281254A (en) * | 2016-07-21 | 2017-01-04 | 北京工业大学 | A kind of two end number mixing Molten Salt Heat Transfer heat storage medium |
| CN110150767B (en) * | 2019-06-26 | 2022-03-18 | 红云红河烟草(集团)有限责任公司 | Cigarette core fiber for heating non-combustible cigarettes and application |
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