Cigarette paper and aerosol-generating article

Abstract

The present application relates to the field of cigarette technology, and discloses a cigarette paper and an aerosol generating substrate product. The cigarette paper for wrapping the aerosol generating substrate is provided with a promoter particle on the side in contact with the aerosol generating substrate, and the promoter particle comprises a SAPO 34 molecular sieve and a metal compound loaded on the SAPO 34 molecular sieve. The cigarette paper aerosol generating substrate can effectively reduce the moisture content of the smoke of a heated cigarette.

Description

Technical Field

[0001] The present invention relates to the technical field of cigarettes, and in particular to cigarette paper and aerosol generating products. Background Art

[0002] In recent years, with the increasingly stringent tobacco control situation and growing consumer awareness of health, new tobacco products have become increasingly popular. Aerosol-generating products such as heated cigarettes have undergone rapid development and optimization in recent years, initially achieving a superior smoking experience. Due to the unique heating method used in heated cigarettes, the tobacco material itself cannot release sufficient aerosol, resulting in low smoke volumes. Therefore, atomizers are typically added to supplement the smoke produced by heating. However, when exposed to air, atomizers absorb moisture, increasing the moisture content of heated cigarettes. This results in excessive moisture content in the smoke from the first two puffs (especially the first puff). This increased heat capacity results in a burning sensation in the mouth when smoking heated cigarettes, resulting in a poor user experience.

[0003] The main solution at present is to prevent heated cigarettes from absorbing moisture in the air by increasing the sealing of the cigarette box, or to reduce the amount of atomizer added to reduce the hygroscopicity of heated cigarettes. However, it has been found in practice that such treatment has little effect on reducing the temperature of the cigarette when smoking. Summary of the Invention

[0004] The purpose of the present invention is to overcome the problem of burns in the mouth when users smoke heated cigarettes in the prior art, and to provide a cigarette paper and an aerosol generating product, which can effectively reduce the moisture content of the smoke of heated cigarettes and thus effectively reduce the temperature at the mouth of the cigarette.

[0005] To achieve the above objectives, the present invention provides, in a first aspect, a cigarette paper for wrapping an aerosol-generating substrate. Promoter particles are provided on the side of the cigarette paper in contact with the aerosol-generating substrate. The promoter particles include SAPO 34 molecular sieve and a metal compound supported on the SAPO 34 molecular sieve.

[0006] Preferably, in the promoter particles, the content of the metal compound is 40-75 wt %.

[0007] Preferably, the metal compound is a metal oxide and / or a metal chloride.

[0008] Further preferably, the metal oxide is titanium dioxide and / or magnesium oxide, and the metal chloride is calcium chloride and / or aluminum chloride.

[0009] More preferably, the metal compound is titanium dioxide and calcium chloride.

[0010] Preferably, in the promoter particles, the content of titanium dioxide is 18-32 wt%, and the content of calcium chloride is 26-40 wt%.

[0011] Preferably, the mass ratio of the titanium dioxide to the calcium chloride is 1:0.85-1.6.

[0012] Preferably, the promoter particles are adhered to the cigarette paper by an adhesive coating.

[0013] Further preferably, the adhesive coating contains an adhesive and an additive, and the additive is selected from at least one of propylene glycol, sorbitol and erythritol.

[0014] Preferably, in the adhesive coating, the content of the additive is 1-5 wt %.

[0015] Preferably, the sticky coating further contains an adhesive, and the content of the adhesive in the sticky coating is 95-99 wt %.

[0016] Preferably, the adhesive is selected from at least one of sodium methylcellulose, guar gum, konjac gum, xanthan gum, flaxseed gum, sodium alginate, hydroxypropyl methylcellulose, sodium silicate, starch and polyvinyl alcohol.

[0017] Preferably, the thickness of the adhesive coating is 10-500 μm.

[0018] Preferably, the adhesive coating is formed with a concave-convex structure.

[0019] Further preferably, the concave-convex structure is a mesh structure, a strip structure or a dot structure.

[0020] Preferably, relative to 1m 2 On the cigarette paper, the content of the promoter particles is 0.5-2.5g.

[0021] Preferably, the particle size of the accelerator particles is less than or equal to 0.28 mm.

[0022] A second aspect of the present invention provides an aerosol production product, comprising a smoking section, a cooling section and a filtering section arranged in sequence, wherein the smoking section comprises the cigarette paper described in the first aspect.

[0023] Through the above technical solution, the present invention provides cigarette paper for wrapping an aerosol-generating substrate, and has promoter particles disposed on the side of the cigarette paper in contact with the aerosol-generating substrate. The promoter particles include a SAPO 34 molecular sieve and a metal compound supported on the SAPO 34 molecular sieve. These promoter particles can effectively reduce the moisture content of smoke during the first puff of a heated cigarette, effectively preventing mouth burns from the smoke, while also increasing the amount of captured glycerol. More importantly, the temperature and glycerol content are more uniform throughout the entire puffing process, resulting in a very stable and high-quality puffing experience. BRIEF DESCRIPTION OF THE DRAWINGS

[0024] Figure 1 is a cross-sectional view of an aerosol-generating article provided by one embodiment of the present invention;

[0025] Figure 2 This is a schematic diagram of the accelerator structure on the side of cigarette paper provided by one embodiment of the present invention;

[0026] Figure 3 Schematic diagram of the distribution of accelerants on the surface of cigarette paper provided by one embodiment of the present invention.

[0027] Smoke-generating section, 110 ; support structure, 120 ; cooling structure, 130 ; filtering structure, 140 ; ​​cigarette paper, 150 ; semi-blocking section, 160 ; accelerant particle layer, 151 . DETAILED DESCRIPTION

[0028] The endpoints of the ranges and any values ​​disclosed herein are not limited to the precise ranges or values, and these ranges or values ​​should be understood to include values ​​close to these ranges or values. For numerical ranges, the endpoints of each range, the endpoints of each range and individual point values, and the individual point values ​​can be combined with each other to obtain one or more new numerical ranges, which should be considered to be specifically disclosed herein.

[0029] A first aspect of the present invention provides a cigarette paper, which is used to wrap an aerosol-generating substrate. The side of the cigarette paper in contact with the aerosol-generating substrate is provided with promoter particles, and the promoter particles include SAPO 34 molecular sieve and a metal compound supported on the SAPO 34 molecular sieve.

[0030] During their research, the inventors discovered that the side of the cigarette paper provided by the present invention that contacts the aerosol-generating substrate is provided with promoter particles. The promoter particles include SAPO 34 molecular sieve and a metal compound supported on the SAPO 34 molecular sieve. These promoter particles can effectively reduce the temperature of the cigarette mouth during the first puff of heated cigarette, effectively avoiding burns, while also increasing the captured glycerol content. More importantly, the temperature and glycerol content are more uniform throughout the entire puffing process, providing a very stable and high-quality puffing experience.

[0031] According to the present invention, the promoter particles can be prepared. Preferably, the preparation method of the promoter particles comprises: grinding SAPO 34 molecular sieve and a metal compound in the presence of a solvent, and obtaining the promoter particles after the solvent evaporates.

[0032] Preferably, the content of the metal compound in the promoter particles is 40-75wt%, and may be 40wt%, 45wt%, 50wt%, 55wt%, 60wt%, 65wt%, 70wt%, 75wt%, or any value within a range formed by any two of these values. Studies have found that controlling the metal compound content in the promoter particles within the above range can further reduce the moisture content of the first puff of smoke after heating.

[0033] To further reduce the mouthpiece temperature during the first puff of heated smoke, the metal compound is preferably a metal oxide and / or a metal chloride. To further reduce the moisture content of the first puff of heated smoke, the metal oxide is preferably titanium dioxide and / or magnesium oxide, and the metal chloride is preferably calcium chloride and / or aluminum chloride.

[0034] Preferably, the metal compounds are titanium dioxide and calcium chloride. Studies have found that SAPO 34 molecular sieve is loaded with titanium dioxide and calcium chloride at the same time. Through the interaction of titanium dioxide, calcium chloride and SAPO 34 molecular sieve, the moisture content of the first flue gas after heating can be further reduced. Considering that the moisture content of the first flue gas after heating can be further reduced, it is further preferred that in the promoter particles, the content of titanium dioxide is 18-32wt%, which can be 18wt%, 20wt%, 22wt%, 24wt%, 26wt%, 28wt%, 30wt%, 32wt%, or any value in the range formed by any two of these values; the content of calcium chloride is 26-40wt%, which can be 26wt%, 28wt%, 30wt%, 32wt%, 34wt%, 36wt%, 38wt%, 40wt%, or any value in the range formed by any two of these values.

[0035] Preferably, the mass ratio of titanium dioxide to calcium chloride is 1:0.85-1.6, and can be 1:0.85, 1:1, 1:1.15, 1:1.3, 1:1.45, 1:1.6, or any value within these ranges. Controlling the mass ratio of titanium dioxide to calcium chloride within this range can further enhance the interaction between the two, thereby further reducing the moisture content of the first puff of smoke after heating.

[0036] Preferably, the promoter particles are adhered to the cigarette paper via an adhesive coating, which can improve the bonding effect between the promoter particles and the cigarette paper.

[0037] Preferably, the adhesive coating contains an adhesive and an additive, wherein the additive is selected from at least one of glycerin, propylene glycol, sorbitol, and erythritol. The addition of these additives can further enhance the interaction between the SAPO 34 molecular sieve and the metal compound, thereby further reducing the moisture content of the first puff of smoke after heating. To further reduce the moisture content of the first puff of smoke after heating, the additive is preferably sorbitol and / or erythritol.

[0038] Preferably, in the adhesive coating, the content of the additive is 1-5 wt %.

[0039] Preferably, the sticky coating further contains an adhesive, and the content of the adhesive in the sticky coating is 95-99 wt %.

[0040] Preferably, the adhesive is selected from at least one of sodium methylcellulose, guar gum, konjac gum, xanthan gum, flaxseed gum, sodium alginate, hydroxypropyl methylcellulose, sodium silicate, starch and polyvinyl alcohol.

[0041] Preferably, the thickness of the adhesive coating is 10-500 μm.

[0042] In order to further reduce the temperature of the cigarette mouth during the first puff of heated smoke, the adhesive coating is preferably formed with a concave-convex structure. In order to further reduce the moisture content of the first puff of heated smoke, the concave-convex structure is further preferably a mesh structure, a strip structure or a dot structure.

[0043] In order to further reduce the moisture content of the first flue gas after heating, preferably, relative to 1m 2The content of the accelerator particles on the cigarette paper is 0.5-2.5g, and may be 0.5g, 1g, 1.5g, 2g, 2.5g, or any value within a range formed by any two of these values. To further reduce the moisture content of the first puff of smoke after heating, the accelerator particles are preferably less than or equal to 0.28mm in size.

[0044] According to the present invention, the aerosol-generating substrate may be shredded tobacco or tobacco sheets.

[0045] The second invention of the present invention provides an aerosol production product, such as Figures 1 to 3 As shown, it includes a smoking section 110, a cooling section 120 and a filtering section 140 arranged in sequence, and the smoking section includes the cigarette 150 described in the first aspect.

[0046] Preferably, a supporting section 130 is further provided between the smoking section 110 and the cooling section 120 .

[0047] Preferably, the tail end of the smoking section 110 is further provided with a semi-blocking portion 160 allowing air to pass through, and the semi-blocking portion 160 has a blocking effect on the aerosol generating substrate in the smoking section 110 .

[0048] Preferably, accelerant particles 151 are provided on the cigarette paper 150 of the cigarette 110 .

[0049] According to the present invention, the cigarette paper 150 is used to wrap tobacco shreds or tobacco sheets as an aerosol generating substrate to form the smoking portion 110 , and the accelerant particles 151 on the inner surface of the cigarette paper 150 may be in contact with the tobacco shreds or tobacco sheets.

[0050] The present invention will be described in detail below through examples. In the following examples, SAPO 34 molecular sieve, titanium dioxide, calcium chloride, aluminum chloride, and magnesium oxide are currently available products on the market.

[0051] Preparation Example 1

[0052] 4 mg of SAPO 34 molecular sieve, 2.5 mg of titanium dioxide, and 3.5 mg of calcium chloride were dispersed in 20 mL of ethanol and ground until the solvent was completely evaporated to obtain promoter particles-1.

[0053] Preparation Example 2

[0054] 4.4 mg of SAPO 34 molecular sieve, 3 mg of titanium dioxide, and 2.6 mg of calcium chloride were dispersed in 20 mL of ethanol and ground until the solvent was completely evaporated to obtain promoter particles-2.

[0055] Preparation Example 3

[0056] 3.5 mg of SAPO 34 molecular sieve, 2.5 mg of titanium dioxide, and 4 mg of calcium chloride were dispersed in 20 mL of ethanol and ground until the solvent was completely evaporated to obtain promoter particles-3.

[0057] Preparation Example 4

[0058] 4.2 mg of SAPO 34 molecular sieve, 3.2 mg of titanium dioxide, and 2.6 mg of calcium chloride were dispersed in 20 mL of ethanol and ground until the solvent was completely evaporated to obtain promoter particles-4.

[0059] Preparation Example 5

[0060] 4.2 mg of SAPO 34 molecular sieve, 1.8 mg of titanium dioxide, and 4 mg of calcium chloride were dispersed in 20 mL of ethanol and ground until the solvent was completely evaporated to obtain promoter particles-5.

[0061] Preparation Example 6

[0062] Accelerator particles were prepared according to the method of Preparation Example 2, except that calcium chloride was replaced with silicon dioxide. The prepared accelerator particles were recorded as Accelerator Particles-6.

[0063] Preparation Example 7

[0064] Promoter particles were prepared according to the method of Preparation Example 3, except that titanium dioxide was replaced by calcium chloride. The prepared promoter particles were recorded as Promoter Particles-7.

[0065] Preparation Example 8

[0066] Promoter particles were prepared according to the method of Example 2, except that titanium dioxide was replaced by magnesium oxide, and calcium chloride was replaced by aluminum chloride.

[0067] Preparation Example 9

[0068] 4.4 mg of SAPO 34 molecular sieves, 3 mg of titanium dioxide, and 2.6 mg of calcium chloride were mixed to obtain a composition.

[0069] Test Example 1

[0070] The contents of the various components of the accelerator particles or compositions prepared above are shown in Table 1.

[0071] Table 1

[0072]

[0073] Example 1

[0074] (1) Bake the tobacco leaf fragments for 3 hours at a temperature of 90 ± 5°C, and grind the tobacco leaves to a size of 200 mesh or more using a grinder to obtain tobacco raw material powder;

[0075] (2) Weigh 100 g of the tobacco raw material powder and place it in a beaker containing 50 g of water, stirring it evenly. Then, add 15 g of a 20 wt% guar gum aqueous solution and continue stirring evenly. Then, add 0.5 g of glycerin and stir thoroughly to obtain a viscous coating containing tobacco material.

[0076] (3) The above-mentioned viscous coating containing tobacco material is evenly applied on the inner surface of the cigarette paper with a length of 22.0 mm and a width of 14.0 mm using a scraper. The amount of application is controlled so that the tobacco content in the viscous coating is 2.0 g / m 2 .

[0077] (4) Press 0.5g / m2 on the above adhesive coating. 2 Evenly sprinkle accelerator granules-1;

[0078] (5) The above product is placed in a dryer and dried at 100°C until the moisture content is less than 12 wt%, and then 5 mg of burley tobacco is rolled into it.

[0079] Example 2

[0080] (1) Bake the tobacco leaf fragments for 3 hours at a temperature of 90 ± 5°C, and grind the tobacco leaves to a size of 200 mesh or more using a grinder to obtain tobacco raw material powder;

[0081] (2) Weigh 100 g of the tobacco raw material powder and place it in a beaker containing 50 g of water and stir it evenly. Then, add 10 g of a 20 wt% aqueous solution of sodium methylcellulose and continue stirring evenly. Then, add 0.8 g of sorbitol and stir thoroughly to obtain a viscous coating containing tobacco material.

[0082] (3) The above-mentioned viscous coating containing tobacco material is evenly applied to the inner surface of the cigarette paper with a length of 22.0 mm and a width of 14.0 mm using a scraper. The amount of coating is controlled so that the tobacco content in the viscous coating is 2.5 g / m 2 .

[0083] (4) Press 1.5g / m2 on the above adhesive coating. 2 Evenly sprinkle accelerator granules-2;

[0084] (5) Place the above product in a dryer and dry it at 100°C until the moisture content is less than 12 wt%, then roll in 5 mg of burley tobacco.

[0085] Example 3

[0086] (1) Bake the tobacco leaf fragments for 3 hours at a temperature of 90 ± 5°C, and grind the tobacco leaves to a size of 200 mesh or more using a grinder to obtain tobacco raw material powder;

[0087] (2) Weigh 100 g of the above tobacco raw material powder, put it into a beaker containing 50 g of water and stir it evenly, then add 10 g of a 10 wt% xanthan gum aqueous solution and continue to stir it evenly, then add 0.3 g of erythritol and stir it thoroughly to obtain a sticky coating containing tobacco material.

[0088] (3) The above-mentioned viscous coating containing tobacco material is evenly applied to the inner surface of cigarette paper with a length of 22.0 mm and a width of 14.0 mm using a scraper. The amount of coating is controlled so that the tobacco content in the viscous coating is 1.5 g / m 2 .

[0089] (4) Press 2.5g / m2 on the above adhesive coating. 2 Evenly sprinkle accelerator granules-3;

[0090] (5) Place the above product in a dryer and dry it at 100°C until the moisture content is less than 12 wt%, then roll in 5 mg of burley tobacco.

[0091] Example 4

[0092] Cigarettes were prepared according to the method of Example 2, except that the promoter particles-2 were replaced by promoter particles-4.

[0093] Example 5

[0094] Cigarettes were prepared according to the method of Example 3, except that the promoter particles-3 were replaced by promoter particles-5.

[0095] Example 6

[0096] Cigarettes were prepared according to the method of Example 2, except that the promoter particles-2 were replaced by promoter particles-6.

[0097] Example 7

[0098] Cigarettes were prepared according to the method of Example 3, except that the promoter particles-3 were replaced by promoter particles-7.

[0099] Example 8

[0100] Cigarettes were prepared according to the method of Example 2, except that the promoter particles-2 were replaced by promoter particles-8.

[0101] Example 9

[0102] Cigarettes were prepared according to the method of Example 1, except that in step (4), the amount of promoter particles-1 was 0.2 g / m 2 .

[0103] Example 10

[0104] Cigarettes were prepared according to the method of Example 3, except that in step (4), the amount of promoter particles-1 was 3 g / m 2 .

[0105] Comparative Example 1

[0106] Cigarettes were prepared according to the method of Example 2, except that the accelerator particles-2 were replaced by the composition prepared in Preparation Example 9.

[0107] Test Example 1

[0108] The instrument used was a thermogravimetric-mass spectrometer (TG-MS) (NETZSCH STA 449 F3 + QMS 403D, Germany). The following parameters were set: atmosphere: nitrogen; shielding gas flow rate: 20 mL / min; purge gas flow rate: 50 mL / min; temperature: 40-390°C; heating rate: 20°C / min. The experimental steps were as follows: grind the sample into a powder, place the sample in the instrument, adjust the parameters, start the experiment, and record the water ion current intensity-temperature curve. The test data are shown in Tables 2 to 4.

[0109] Table 2

[0110]

[0111] Table 3

[0112]

[0113] Table 4

[0114]

[0115] In the above, a represents the peak point in the free water evaporation interval; b represents the trough point at the junction of the free water evaporation interval and the cell water evaporation interval; c represents the peak point in the cell water evaporation interval; d represents the trough point at the junction of the cell water evaporation interval and the pyrolysis water evaporation interval; e represents the peak point in the pyrolysis water evaporation interval. T0 is the temperature value of the plant material at this point, T n is the temperature of the sample at that point, A0 is the ion current intensity of the plant material at that point, and A n is the ion current intensity value of the sample at that point.

[0116] The results in Tables 2-4 show that the water ion flux intensity peak near 100°C (corresponding to point a0) is primarily caused by the volatilization of free water in the sample. A second water ion flux intensity peak appears near 282°C (corresponding to point c0), and a third peak appears at 341°C (corresponding to point e0). After the sample is mixed with the accelerant, the water ion flux signal intensity at temperatures around 100°C, 282°C, and 341°C increases overall. This indicates that the sample's water vapor generation reaction has been advanced, allowing for early dehydration during the preheating phase, thereby reducing water release during the first puff after heating.

[0117] The preferred embodiments of the present invention have been described in detail above, but the present invention is not limited thereto. Within the technical concept of the present invention, various simple variations of the technical solution of the present invention may be made, including combining the various technical features in any other appropriate manner. These simple variations and combinations should also be regarded as disclosed in the present invention and fall within the scope of protection of the present invention.

Claims

1. A cigarette paper, characterized in that: The cigarette paper is used to wrap an aerosol-generating substrate. The side of the cigarette paper that contacts the aerosol-generating substrate is provided with promoter particles. The promoter particles include SAPO 34 molecular sieve and a metal compound supported on the SAPO 34 molecular sieve. The metal compound is titanium dioxide and calcium chloride. The preparation method of the promoter particles comprises: grinding the SAPO 34 molecular sieve and the metal compound in the presence of a solvent, and obtaining the promoter particles after the solvent evaporates.

2. The cigarette paper according to claim 1, characterized in that In the promoter particles, the content of the metal compound is 40-75 wt %.

3. The cigarette paper according to claim 1, characterized in that In the promoter particles, the content of titanium dioxide is 18-32 wt %, and the content of calcium chloride is 26-40 wt %.

4. The cigarette paper according to claim 3, characterized in that The mass ratio of the titanium dioxide to the calcium chloride is 1:0.85-1.

6.

5. The cigarette paper according to any one of claims 1 to 4, characterized in that: The promoter particles are adhered to the cigarette paper by an adhesive coating.

6. The cigarette paper according to claim 5, characterized in that The adhesive coating contains an adhesive and an additive, wherein the additive is selected from at least one of glycerin, propylene glycol, sorbitol and erythritol.

7. The cigarette paper according to claim 6, characterized in that The adhesive is selected from at least one of sodium methylcellulose, guar gum, konjac gum, xanthan gum, flaxseed gum, sodium alginate, hydroxypropyl methylcellulose, sodium silicate, starch and polyvinyl alcohol.

8. The cigarette paper according to claim 5, characterized in that The thickness of the adhesive coating is 10-500 μm.

9. The cigarette paper according to claim 5, characterized in that The adhesive coating is formed with a concavo-convex structure.

10. The cigarette paper according to claim 9, characterized in that The concave-convex structure is a mesh structure, a strip structure or a dot structure.

11. The cigarette paper according to any one of claims 1 to 4, characterized in that: Relative to 1m 2 On the cigarette paper, the content of the promoter particles is 0.5-2.5g.

12. The cigarette paper according to claim 11, characterized in that The particle size of the accelerator particles is less than or equal to 0.28 mm.

13. An aerosol production product, characterized in that The invention comprises a smoking section (110), a cooling section (120) and a filtering section (140) which are arranged in sequence, wherein the smoking section (110) comprises the cigarette paper (150) according to any one of claims 1 to 12.

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