A solid supported aerosol generating material and a heated tobacco rod material based thereon

Abstract

The application discloses a solid-loaded atomization agent material and a heated cigarette core material based on the same. The atomization agent is solidified in a porous material through a spray drying method, and further has a hydrophobic function through surface treatment. The solidification amount of the atomization agent can be controlled by adjusting the pore size of the porous material and spray drying process parameters. The solid-loaded atomization agent material is added to the cigarette core material, so that the smoke release amount of the cigarette core material is increased, the moisture absorption amount of the cigarette core material is reduced, and the quality and quality stability of the heated cigarette are improved.

Description

TECHNICAL FIELD

[0001] The present application belongs to the technical field of new-type tobacco products, and particularly relates to a solid-loaded atomizing agent material and a heating cigarette tobacco core material based on the same. BACKGROUND

[0002] The heating cigarette is a kind of cigarette that delivers tobacco aroma and nicotine to consumers through the way of “heating without burning”, which can meet the smoking experience of smokers and reduce harmful substances generated by high-temperature combustion. In recent years, the heating cigarette has been warmly pursued by consumers.

[0003] The tobacco core material, as a core component of the heating cigarette, is the carrier and direct deliverer of nicotine and aroma components, and plays a decisive role in smoking quality. Due to the low heating temperature, the heating cigarette tobacco core material usually needs to add an exogenous atomizing agent to achieve a larger smoke release. The atomizing agent is generally a polyhydric alcohol such as glycerol and propylene glycol, which has strong hygroscopicity. This makes the influence of environmental humidity change on the moisture content fluctuation of tobacco particles increase, and the difference in moisture content has an important influence on the heat transfer, pyrolysis, smoke component release and sensory quality of tobacco raw materials. At the same time, with the extension of storage time, the smoke amount of the first few puffs is low, which may be due to the gradual migration of the atomizing agent to the inside of the tobacco capillary, making it difficult for the atomizing agent to be released from the tobacco core material.

[0004] In view of the problem of low smoke amount, patent CN109419043B uses porous diatomite to adsorb the atomizing agent to increase the content of the atomizing agent; patent CN114668166A pre-disposes a pore-forming agent in the tobacco core material, and after the tobacco core material is formed, chemical, biological and other treatments are used to achieve the purpose of forming pores to increase the smoke release amount. However, existing research has shown that the increase of the atomizing agent content will significantly increase the hygroscopicity of the tobacco core material, which is not conducive to the storage quality stability of the tobacco core material. SUMMARY

[0005] In order to overcome the shortcomings of the prior art, the present application provides a solid-loaded atomizing agent material and a heating cigarette tobacco core material based on the same, which aims to reduce the adsorption amount of moisture by the tobacco core material on the basis of improving the smoke release amount, improve the quality stability of the tobacco core material under high temperature and high humidity conditions, and avoid the migration of the atomizing agent to the inside of the tobacco capillary during long-term storage, thereby improving the storage quality stability of the product, and further adjusting the solid loading amount of the atomizing agent by adjusting the spray drying temperature.

[0006] In order to achieve the purpose, the present application adopts the following technical solutions:

[0007] A preparation method of a solid-loaded atomizing agent material, characterized in that it comprises the following steps:

[0008] (1) mixing the porous material, glycerin and / or propylene glycol with water in a mass ratio of 1:1-3:5-19, and uniformly mixing to obtain a powder;

[0009] (2) mixing the powder obtained in step (1) with water in a mass ratio of 1:1.0-5.5 to obtain a mixed solution;

[0010] (3) adding 2%-8% of an oleic acid solution or an ethanol solution of stearic acid to the mixed solution obtained in step (2) by dropwise adding, uniformly stirring, and then drying to obtain a powder, thereby obtaining a solid carrier atomization agent material; the mass concentration of the ethanol solution of stearic acid is 50%;

[0011] or: heating the mixed solution obtained in step (2) to 40℃, dropwise adding 5%-15% of a sodium stearate aqueous solution or a magnesium stearate aqueous solution to the mixed solution by dropwise adding, uniformly stirring, and then drying to obtain a powder, thereby obtaining a solid carrier atomization agent material; the mass concentration of the sodium stearate aqueous solution or the magnesium stearate aqueous solution is 50%.

[0012] Further, in step (1), the porous material has a pore size of 1.0-20 nm, a pore volume of 0.05-0.79 cm 3 / g, and a specific surface area of 10-500 m 2 / g.

[0013] Further, in step (1), the temperature of the spray drying is 80-180℃, the flow rate is 15-55 mL / min, and the suction rate is 15-45 L / s.

[0014] Further, in step (3), the temperature of the drying is 110℃.

[0015] The solid carrier atomization agent material prepared by the method can be used in a heated cigarette core material to improve atomization and prevent moisture decomposition. The cigarette core material comprises the following raw materials in a mass percentage: 50-70% of a substrate powder, 5-15% of an atomization agent, 0-6% of a flavoring agent, 3-10% of a binder, and 5-20% of the solid carrier atomization agent material.

[0016] Further, the substrate powder is at least one of tobacco powder and natural plant flavoring agent; and the binder is at least one of a hydroxymethyl cellulose, a guar gum, a hydroxypropyl methyl cellulose, and an aqueous solution of ethyl cellulose.

[0017] The cigarette core material is prepared by a granulation process, and the preparation can be performed according to the following steps:

[0018] Step 1, mixing the substrate powder and the solid carrier atomization agent material in a mixing device to obtain a mixed powder;

[0019] Step 2, atomized agent and essence are atomized and sprayed into the mixed powder, so that the powder is gradually wetted;

[0020] Step 3, the binder is added dropwise into the wet powder, so that the powder is bonded into particles;

[0021] Step 4, the prepared particles are dried to obtain granular tobacco core material, and the drying process is microwave drying or oven drying.

[0022] The tobacco core material prepared above is prepared into a heated cigarette, and compared with a cigarette without adding the solidified atomized agent material, the smoke release amount is increased when matching the same heating smoking set is smoked, and the moisture absorption amount of the tobacco core material is reduced by 4-15% under the condition of 30°C and 80% RH.

[0023] Compared with the prior art, the beneficial effects of the present application are embodied in:

[0024] 1. In the present application, the atomized agent is solidified in the porous material by the spray drying method, and further has a hydrophobic function through surface treatment. The solidified amount of the atomized agent can be controlled (the content of the atomized agent in the solidified atomized agent material is 18 mg / g-600 mg / g) by adjusting the pore size of the porous material and the spray drying process parameters. When added to the tobacco core material, the smoke release amount of the tobacco core material is increased, and the moisture absorption amount of the tobacco core material is reduced, and the quality and quality stability of the heated cigarette are improved.

[0025] 2. The solidified atomized agent material prepared in the present application uses the porous material to adsorb the atomized agent, and the release rate of the atomized agent can be adjusted by controlling the pore size of the porous material.

[0026] 3. The tobacco core material containing the solidified atomized agent prepared in the present application can reduce the addition amount of the atomized agent in the preparation process of the tobacco core material, improve the moisture resistance of the tobacco core material, and the atomized agent in the porous material is physically adsorbed with the substrate, and is more volatile after being heated. By compounding materials with different pore sizes, the smoke release stability effect can be achieved.

[0027] 4. The raw materials used in the present application are low in price and simple in preparation method, and industrial production can be carried out. BRIEF DESCRIPTION OF DRAWINGS

[0028] Figure 1 The wetting angles of the solidified atomized agent materials prepared for each embodiment to water are shown in the figure, wherein (A) is the solidified atomized agent material 1, (B) is the solidified atomized agent material 2, and (C) is the solidified atomized agent material 3.

[0029] Figure 2 The moisture adsorption and desorption curves of the tobacco core materials containing the solidified atomized agent prepared for each embodiment are shown in the figure.

[0030] Figure 3The test results of the amount of smoke released by the heating cigarette prepared from the tobacco core material of each embodiment. DETAILED DESCRIPTION

[0031] The embodiments of the present application are described in detail below, which are implemented on the premise of the technical solutions of the present application, and detailed implementation manners and specific operation processes are given, but the protection scope of the present application is not limited to the following embodiments.

[0032] Embodiment 1

[0033] The tobacco core material of the present embodiment is prepared as follows:

[0034] Step 1, 550 g of tobacco powder and 200 g of natural plant flavor are weighed and placed in a mixer for uniform mixing at a mixing rate of 700 r / min to obtain a mixed powder.

[0035] Step 2, 150 g of glycerol and 20 g of essence flavor are atomized and sprayed into the mixed powder at a rotation speed of 500 r / min to obtain a wet material.

[0036] Step 3, 80 g of a 2% mass concentration hydroxymethyl cellulose aqueous solution is continuously added to the wet material at a rotation speed of 500 r / min to prepare granular tobacco core material with different particle sizes.

[0037] Step 4, the prepared tobacco core material is dried by microwave drying, and 10-60 mesh particles are selected for sensory and moisture adsorption / desorption experiments, which are recorded as a control sample.

[0038] The prepared tobacco core material is made into a heating cigarette, which is matched with a heating smoking set for smoking, and the amount of smoke is moderate and the tobacco aroma is sufficient. Figure 2 The DVS test results show that under the test conditions of 30℃ and 80% RH, the initial moisture absorption rate of the tobacco core material is relatively fast, and the equilibrium moisture content is large.

[0039] Embodiment 2

[0040] The solid-supported atomizing agent material of the present embodiment is prepared as follows:

[0041] Step 1, 100 g of nano-porous calcium carbonate, 150 g of glycerol, 50 g of propylene glycol and 800 g of water are weighed and mixed uniformly to form a blend 1, wherein the nano-porous calcium carbonate has a pore diameter of 2.5 nm, a pore volume of 0.18 cm 3 / g and a specific surface area of 305 m 2 / g.

[0042] Step 2, the blend 1 is spray-dried by using a spray-drying device, the spray-drying temperature is 120℃, the flow rate is 30 mL / min and the air suction rate is 30 L / s, and a powder 1 is obtained after drying.

[0043] Step 3, the spray-dried powder 1 was mixed with water at a mass ratio of 1:2.8 to obtain a blend 2.

[0044] Step 4, 2% of oleic acid based on the mass of the blend 2 was added dropwise to the blend 2 under stirring, and the stirring was continued for 0.5 h, and then the mixture was dried in an oven at 110°C to obtain a powder, i.e. a solid-supported atomizer material 1, which had an atomizer content of 469 mg / g.

[0045] Figure 1 The wetting angle test result A in Table 1 shows that the solid-supported atomizer material 1 has good hydrophobicity.

[0046] The tobacco core material of the present example was prepared as follows:

[0047] Step 1, 550 g of tobacco powder, 150 g of natural plant flavor, and 130 g of the solid-supported atomizer material 1 were weighed and mixed in a mixer at a mixing rate of 700 r / min to obtain a mixed powder.

[0048] Step 2, 100 g of glycerol and 20 g of essence flavor were atomized and sprayed into the mixed powder at a rotation speed of 500 r / min to obtain a wet material.

[0049] Step 3, 50 g of a 2% hydroxymethyl cellulose aqueous solution was further added to the wet material at a rotation speed of 500 r / min to prepare a granular tobacco core material with different particle sizes.

[0050] Step 4, the tobacco core material was dried by microwave drying, and 10-60 mesh particles were screened out for sensory and moisture adsorption / desorption experiments, and the sample was recorded as tobacco core material 1.

[0051] The amount of the solid-supported atomizer material 1 was further adjusted as follows:

[0052] Step 1, 550 g of tobacco powder, 150 g of natural plant flavor, and 130 g of the solid-supported atomizer material 1 were weighed and mixed in a mixer at a mixing rate of 700 r / min to obtain a mixed powder.

[0053] Step 2, 100 g of glycerol and 20 g of essence flavor were atomized and sprayed into the mixed powder at a rotation speed of 500 r / min to obtain a wet material.

[0054] Step 3, 50 g of a 2% hydroxymethyl cellulose aqueous solution was further added to the wet material at a rotation speed of 500 r / min to prepare a granular tobacco core material with different particle sizes.

[0055] Step 4, the tobacco core material is dried by microwave drying, and 10-60 mesh particles are screened out for sensory and moisture adsorption and desorption experiments, and the sample is recorded as tobacco core material 2.

[0056] The prepared tobacco core material 1 and tobacco core material 2 are made into heated cigarette rods, and are matched with a heating smoking set for smoking. Compared with the control sample without adding the solid supported atomizing agent material, the smoke volume is more abundant, and the smoke aroma is sufficient. Figure 2 The DVS test results show that, under the test conditions of 30℃ and 80% RH, the moisture absorption rate of the tobacco core material 1 and the tobacco core material 2 is significantly reduced compared with the control sample, and the equilibrium moisture content is reduced.

[0057] Example 3

[0058] The solid supported atomizing agent material of the example is prepared by the following method:

[0059] Step 1, 100g of nano-porous calcium carbonate, 100g of glycerol, 50g of propylene glycol and 700g of water are mixed uniformly to form a blend 1, wherein the nano-porous calcium carbonate has a pore size of 10.2nm, a pore volume of 0.43cm 3 / g and a specific surface area of 160m 2 / g.

[0060] Step 2, the blend 1 is spray dried by a spray drying device, the spray drying temperature is 100℃, the flow rate is 20mL / min, and the air suction rate is 45L / s. After drying, powder 1 is obtained.

[0061] Step 3, the powder 1 after spray drying is mixed with water at a mass ratio of 1:3.2 to obtain a blend 2.

[0062] Step 4, under stirring, 5.6% of stearic acid ethanol solution (mass concentration of 50%) of the mass of the blend 2 is added dropwise to the blend 2, and stirring is continued for 0.5h, and then dried in an oven at 110℃ to powder, to obtain a solid supported atomizing agent material 2, and the atomizing agent content is 231mg / g.

[0063] Figure 1 The wetting angle test result B of the solid supported atomizing agent material 2 shows that the solid supported atomizing agent material 2 has good hydrophobicity.

[0064] The tobacco core material of the example is prepared by the following method:

[0065] Step 1, 550g of tobacco powder, 100g of natural plant flavor and 190g of solid supported atomizing agent material 2 are placed in a mixer and mixed uniformly at a mixing rate of 700r / min to obtain a mixed powder.

[0066] Step 2, 80 g of glycerol and 20 g of flavoring were atomized and sprayed into the mixed powder at a rotation speed of 500 r / min to obtain a wet material.

[0067] Step 3, 60 g of a 2% by mass hydroxymethyl cellulose aqueous solution was continuously added to the wet material at a rotation speed of 500 r / min to prepare granular tobacco core material with different particle sizes.

[0068] Step 4, the tobacco core material was dried by microwave drying, and 10-60 mesh particles were screened out for sensory and water adsorption / desorption experiments, and the sample was recorded as tobacco core material 3.

[0069] The prepared tobacco core material 3 was made into a heated cigarette, which was matched with a heating smoking set for smoking. Compared with the control sample without adding the solid supported atomizing agent material, the smoke volume was more abundant and the smoke aroma was sufficient. Figure 2 The DVS test results of the tobacco core material 3 showed that, under the test conditions of 30°C and 80% RH, the moisture absorption rate of the tobacco core material 3 was significantly reduced compared with the control sample, and the equilibrium moisture content was reduced.

[0070] Example 4

[0071] The solid supported atomizing agent material of the present example was prepared as follows:

[0072] Step 1, 100 g of nano-porous calcium carbonate, 100 g of glycerol, 50 g of propylene glycol and 700 g of water were mixed uniformly to form a blend 1, wherein the nano-porous calcium carbonate has a pore size of 10.2 nm, a pore volume of 0.43 cm 3 / g and a specific surface area of 160 m 2 / g.

[0073] Step 2, the blend 1 was spray dried by using a spray drying device, the spray drying temperature was 150°C, the flow rate was 30 mL / min, and the air suction rate was 30 L / s. After drying, powder 1 was obtained.

[0074] Step 3, the spray-dried powder 1 was mixed with water in a mass ratio of 1:3.6 to obtain a blend 2.

[0075] Step 4, under stirring, 5.6% of a stearic acid ethanol solution (50% by mass) based on the mass of the blend 2 was added dropwise to the blend 2, and the stirring was continued for 0.5 h. Subsequently, it was dried in an oven at 110°C to a powder, thereby obtaining a solid supported atomizing agent material 3, which has an atomizing agent content of 192 mg / g.

[0076] Figure 1 The wetting angle test results C of the solid supported atomizing agent material 3 showed that the solid supported atomizing agent material 3 had good hydrophobicity.

[0077] The tobacco core material of the present example was prepared as follows:

[0078] Step 1, 550 g of tobacco powder, 100 g of natural plant flavor, and 190 g of the solid supported misting agent material 3 were weighed and mixed in a mixer at a mixing rate of 700 r / min to obtain a mixed powder.

[0079] Step 2, 80 g of glycerol and 20 g of essence flavor were misted and sprayed into the mixed powder at a rotation speed of 500 r / min to obtain a wet material.

[0080] Step 3, 60 g of a 2% by mass hydroxymethyl cellulose aqueous solution was continuously added to the wet material at a rotation speed of 500 r / min to prepare a granular tobacco core material with different particle sizes.

[0081] Step 4, the tobacco core material was dried by microwave drying, and 10 mesh to 60 mesh particles were screened out for sensory and water adsorption / desorption experiments, and the sample was recorded as tobacco core material 4.

[0082] The prepared tobacco core material 4 was made into a heated cigarette, and was matched with a heating smoking set for smoking. Compared with the control sample without the addition of the solid supported misting agent material, the smoke volume was more abundant, and the tobacco aroma was sufficient. Figure 2 The DVS test results showed that, under the test conditions of 30°C and 80% RH, the moisture absorption rate of the tobacco core material 4 was significantly reduced compared with the control sample, and the equilibrium moisture content was reduced.

[0083] Comparative Example 1

[0084] The solid supported misting agent material of the present example was prepared as follows:

[0085] Step 1, 100 g of nano-porous calcium carbonate, 150 g of glycerol, 50 g of propylene glycol, and 800 g of water were weighed and mixed uniformly to form a blend 1, wherein the nano-porous calcium carbonate has a pore size of 2.5 nm, a pore volume of 0.18 cm 3 / g, and a specific surface area of 305 m 2 / g.

[0086] Step 2, the blend 1 was spray dried by using a spray drying device, the spray drying temperature was 120°C, the flow rate was 30 mL / min, and the air suction rate was 30 L / s. After drying, the solid supported misting agent material 4 was obtained.

[0087] The tobacco core material of the present example was prepared as follows:

[0088] Step 1, 550 g of tobacco powder, 150 g of natural plant flavor, and 130 g of the solid supported misting agent material 4 were weighed and mixed in a mixer at a mixing rate of 700 r / min to obtain a mixed powder.

[0089] Step 2, 100 g of glycerol and 20 g of essence and flavor were atomized and sprayed into the mixed powder at a rotation speed of 500 r / min to obtain a wet material.

[0090] Step 3, 50 g of a 2% hydroxymethyl cellulose aqueous solution was continuously added to the wet material at a rotation speed of 500 r / min to prepare granular tobacco core material with different particle sizes.

[0091] Step 4, the tobacco core material was dried by microwave drying, and 10-60 mesh particles were screened out for sensory and water adsorption / desorption experiments, and the sample was recorded as tobacco core material 5.

[0092] Figure 2 The DVS test results show that, under the test conditions of 30°C and 80% RH, the moisture absorption rate of tobacco core material 5 is increased, and the equilibrium moisture content is increased compared with tobacco core material 1, indicating that the moisture-proof performance of the material is improved after hydrophobic treatment.

Claims

1. Use of a solid supported fogging agent material in a heat cigarette core material, characterized in that: The solid carrier atomization agent material is used in a heated cigarette core material to increase the atomization amount and prevent moisture decomposition, and the cigarette core material comprises the following raw materials in percentage by mass: base powder 50-70%, atomization agent 5-15%, essence and spices 0-6%, adhesive 3-10%, and solid carrier atomization agent material 5-20%; The preparation method of the solid carrier atomization agent material comprises the following steps: (1) After uniformly mixing porous material, glycerol and / or propylene glycol with water at a mass ratio of 1:1~3:5~19, the mixture is spray-dried to obtain powder; the porous material has a pore size of 1.0~20 nm and a pore volume of 0.05~0.79 cm³. 3 / g, specific surface area of ​​10~500m² 2 / g; the spray drying temperature is 80~180℃, the flow rate is 15~55mL / min, and the pumping rate is 15~45L / s; (2) uniformly mixing the powder obtained in step (1) with water in a mass ratio of 1:1.0-5.5 to obtain a mixed solution; (3) adding 2%-8% of an oleic acid solution or an ethanol solution of stearic acid to the mixed solution obtained in step (2) in terms of the mass of the mixed solution, stirring uniformly, and then drying to powder, thereby obtaining the solid carrier atomization agent material; the mass concentration of the ethanol solution of stearic acid is 50%; Alternatively, heating the mixed solution obtained in step (2) to 40℃, adding 5%-15% of a sodium stearate aqueous solution or a magnesium stearate aqueous solution to the mixed solution in terms of the mass of the mixed solution, stirring uniformly, and then drying to powder, thereby obtaining the solid carrier atomization agent material; the mass concentration of the sodium stearate aqueous solution or the magnesium stearate aqueous solution is 50%.

2. Use according to claim 1, characterized in that: In step (3), the drying temperature is 110℃.

3. Use according to claim 1, characterized in that: The base powder is at least one of tobacco powder and natural plant spices; and the adhesive is at least one of a hydroxymethyl cellulose, a guar gum, a hydroxypropyl methyl cellulose, and an aqueous solution of ethyl cellulose.

4. Use according to claim 1, characterized in that: The cigarette core material is prepared by a granulation process.

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