CN111602846A - Cigarette smoke cooling particles and preparation method and application thereof - Google Patents
Cigarette smoke cooling particles and preparation method and application thereof Download PDFInfo
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- CN111602846A CN111602846A CN202010342581.2A CN202010342581A CN111602846A CN 111602846 A CN111602846 A CN 111602846A CN 202010342581 A CN202010342581 A CN 202010342581A CN 111602846 A CN111602846 A CN 111602846A
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Images
Classifications
-
- 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
- A24D3/06—Use of materials for tobacco smoke filters
- A24D3/061—Use of materials for tobacco smoke filters containing additives entrapped within capsules, sponge-like material or the like, for further release upon smoking
-
- 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
- A24D3/04—Tobacco smoke filters characterised by their shape or structure
- A24D3/048—Tobacco smoke filters characterised by their shape or structure containing additives
Abstract
A cigarette smoke cooling granule and its preparation method and application are provided. The temperature-reducing particles comprise an inner core and an outer shell covering the inner core, the outer shell comprises a water-soluble polymer and a heat-conducting material, and the inner core comprises an organic phase-change compound. When high-temperature flue gas flows through the cooling particles, the organic phase-change compound can absorb a large amount of heat to reduce the temperature of the flue gas; the organic phase-change compound is coated by the shell, so the organic phase-change compound is blocked in the shell after absorbing heat and melting, and the shell can prevent the organic phase-change compound from overflowing the filter stick in the phase change process; in addition, the bad smell absorption of the organic phase compound can be blocked in the shell, so that the negative influence of the bad smell absorption on the smoke can be avoided; the heat conduction material in this shell has then played good heat conduction effect to the heat that makes the flue gas can be quick transfers to organic phase transition compound, thereby can improve the heat-transfer ability of cooling granule, strengthens organic phase transition compound's heat absorption efficiency.
Description
Technical Field
The invention relates to the technical field of cigarettes, in particular to a tobacco product which is not combusted by heating, and more particularly relates to a cigarette smoke cooling particle and a preparation method and application thereof.
Background
In recent years, new tobacco products have been developed rapidly, wherein the tobacco products which are not burnt by heating have good development prospect because the smoking habit is closest to the traditional cigarette products. The technology for heating the incombustible tobacco is to heat a tobacco substrate by an external heating element at the temperature of 200-400 ℃, and the cut tobacco or the sheet generates distillation and pyrolysis products in a non-combustion state. However, the heating wrapping area is large, and the heat dissipation path is single, so that the inlet temperature of high-temperature atomized smoke is high, and the problems of burning feeling and uncomfortable aftertaste are caused. Compared with the traditional cigarette, the cigarette which is heated and does not burn has less smoke volume because the tobacco sheet raw material is not burnt, if the smoke temperature is reduced by the technical means of increasing the length of the filter stick or strengthening the ventilation of the filter stick, the smoke volume of the product can be further reduced, thereby influencing the smoking feeling of the product.
In the prior art, a heat absorbing material is mainly added to cool mainstream smoke, for example, iQOS matched cigarettes proposed by Felmo company adopt a folded polylactic acid film as a cooling material for smoke, but the material is easy to collapse and shrink when heated, so that the cooling effect is influenced, and the sensory evaluation of taste absorption is poor.
The patent with publication number CN105686078A adopts ammonium salt as a cigarette cooling agent, which can obviously reduce the smoke temperature at the end of a filter stick, but a small amount of ammonia gas is generated when the ammonium salt is heated, so that irritation and health risks are brought.
Patent publication No. CN106690415A reports a cooling filter rod added with heat absorbing gel, but the gel can be phase-changed and melted into liquid in the smoke temperature range, and there is a risk of leakage from the filter rod, which affects the smoking experience of consumers.
Therefore, it is very important to develop a cigarette cooling material which can effectively reduce the smoke temperature and does not influence the smoking experience.
Disclosure of Invention
The technical problem to be solved by the invention is to provide a cigarette smoke cooling particle aiming at the problems in the prior art, wherein the cigarette smoke cooling particle is added to a filter stick part of a cigarette, so that the smoke temperature at the filter stick tip can be effectively reduced in the smoking process, and the problem of possible overflow of a phase-change material due to melting can be solved, thereby improving the smoking experience.
The invention aims to solve another technical problem of providing the preparation method of the cigarette smoke cooling particles.
The invention also aims to solve the technical problem of providing the application of the cigarette smoke cooling particles in the production of cigarettes.
In order to solve the technical problems, the technical scheme adopted by the invention is to provide the cigarette smoke cooling particles, the cooling particles comprise an inner core and an outer shell coating the inner core, the outer shell comprises a water-soluble polymer and a heat conduction material, and the inner core comprises an organic phase change compound.
In the cooling particles, the water-soluble polymer has stable shape in a smoke temperature range and forms a temperature-resistant shell with a heat-conducting material to coat an inner core containing an organic phase-change compound; when high-temperature flue gas flows through the cooling particles, the organic phase-change compound can absorb a large amount of heat to reduce the temperature of the flue gas; the organic phase-change compound is coated by the shell, so that the organic phase-change compound is blocked in the shell after absorbing heat and melting, namely, the shell can effectively prevent the organic phase-change compound from overflowing the filter stick in the phase transition process; in addition, the bad smell absorption of the organic phase compound can be blocked in the shell, so that the negative influence of the bad smell absorption on the smoke can be avoided; the heat conduction material in the shell plays a good heat conduction role so that the heat of the smoke can be rapidly transferred to the organic phase change compound, thereby improving the heat conduction capability of the cooling particles and enhancing the heat absorption efficiency of the organic phase change compound.
In the cigarette smoke cooling particles provided by the invention, the organic phase compound is selected from C22～C28Normal and iso paraffins, C16～C18Straight chain fatty alcohol, and C12～C18One of the linear fatty acids.
In the cigarette smoke cooling particles provided by the invention, the water-soluble polymer is polyvinylpyrrolidone, and preferably, the polyvinylpyrrolidone is cationic polyvinylpyrrolidone. The polyvinylpyrrolidone is a high-molecular dispersing agent with good water solubility, is safe and nontoxic, and improves the safety of the cooling particles.
In the cigarette smoke cooling particles provided by the invention, the heat conduction material comprises one of activated carbon, expanded graphite, carbon nano tubes and graphene oxide.
The invention provides cigarette smoke cooling particles, which comprise the following components in percentage by mass: 30 to 70 percent of organic phase compound, 24 to 66 percent of polyvinylpyrrolidone and 0.5 to 10 percent of heat conduction material. Preferably, the cooling particles comprise the following components in percentage by mass: 45-60% of organic phase change material, 40-60% of polyvinylpyrrolidone and 1-5% of heat conduction material.
In the cigarette smoke cooling particles provided by the invention, the particle size of the cooling particles is 20-30 meshes. So can guarantee to add have the inside sufficient air permeability of the filter rod of cooling granule to guarantee to aspirate and experience.
In order to solve another technical problem, the technical scheme adopted by the invention is to provide a preparation method of the cigarette smoke cooling particles, which comprises the following steps:
melting a certain amount of organic phase change compound, adding the melted organic phase change compound, a water-soluble polymer and a dispersing agent into water or an aqueous alcohol solution, and dispersing to obtain a uniform system;
then adding a heat conduction material, and continuously stirring until the mixture is uniformly dispersed;
and adding a certain amount of separating agent, stopping stirring after adding, depositing, filtering and drying to obtain a solid substance, and crushing the solid substance to obtain the cooling particles.
In the above step, the dispersant comprises polysorbate-80 and/or cetearyl polyglucoside, and the addition amount is 1-10% of the mass of the organic phase change compound.
In the above step, the separating agent is an inorganic salt aqueous solution, the inorganic salt comprises one of sodium sulfate, ammonium sulfate and magnesium sulfate, and the mass concentration of the inorganic salt aqueous solution is 10-20%, preferably 17%. The volume of the inorganic salt water solution is 0.5-1.5 times, preferably 1 time of the volume of the uniform system.
Thus, the cooling particles with the core-shell composite structure can be prepared through the steps.
In order to solve the other technical problem, the invention adopts the technical scheme that the application of the cigarette smoke cooling particles in the production of cigarette filter sticks is provided.
In the application provided by the invention, the dosage of the cooling particles in the cigarette filter stick is 10-200 mg/cigarette. The applicant finds out through research that if the dosage of the cooling particles of each cigarette filter stick is less than 10mg, the cooling effect on smoke is not obvious; if the dosage of each cigarette filter stick is more than 200mg, the whole suction resistance of the cigarette filter stick is too large, so that the suction obstacle is caused, and the experience of consumers is influenced. Therefore, the dosage of the cooling particles added to each cigarette filter stick is 10-200 mg, preferably 80-120 mg.
In the application provided by the invention, the cigarette filter stick comprises two filter sections and a hollow cooling section clamped between the two filter sections, wherein the cooling particles are added in the hollow cooling section.
The cigarette smoke cooling particles provided by the invention can achieve the following beneficial effects:
1. the cooling particles have a core-shell composite structure, and the phenomenon that the organic phase-change compound in the core overflows in the phase-change process is prevented by utilizing the coating effect of the shell, and the negative influence of the bad odor absorption of the organic phase-change compound on the smoke is avoided.
2. The heat conduction material contained in the shell can improve the heat conduction capability of the cooling particles and enhance the heat absorption efficiency of the organic phase-change compound of the core;
3. the cooling particles are applied to the cigarette filter stick, so that the temperature of mainstream smoke can be effectively reduced, the burning sensation and irritation of the smoke are reduced, the smoking experience of consumers is improved, and the smoking quality of products is improved;
4. the cooling particles provided by the invention have the advantages of convenient and easily obtained raw materials, safety, harmlessness, low cost and simple preparation process, and are suitable for industrial mass production.
Drawings
FIG. 1 is a Differential Scanning Calorimetry (DSC) curve of the temperature reducing particles of the cigarette of example 1;
FIG. 2 is a schematic diagram of the measurement of mainstream smoke temperature of a cigarette sample using a type K thermocouple detection instrument.
FIG. 3 is a plot of mouth-to-mouth temperature of mainstream smoke during smoking of samples of cigarettes of example 1 and the control;
FIG. 4 is a graph comparing the average temperature of mainstream smoke during smoking of cigarette samples of examples 1-5 and the control.
Detailed Description
For a more clear understanding of the technical features, objects and effects of the present invention, embodiments of the present invention will now be described in detail with reference to the accompanying drawings. It is to be understood that the described embodiments are merely exemplary of the invention, and not restrictive of the full scope of the invention. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
Example 1
Weighing 20g of octacosane, melting, dispersing with 20g of polyvinylpyrrolidone, 1g of cetearyl polyglucoside and 0.5g of polysorbate-80 in 100g of water, performing ultrasonic treatment for 3 hours to form stable emulsion, adding 2g of activated carbon, uniformly dispersing, adding 100mL of 17% sodium sulfate aqueous solution at the speed of 20mL/min, depositing, filtering and drying to obtain a solid, and crushing into particles of about 30 meshes to obtain the cooling particles. As can be seen from the DSC curve (FIG. 1), the phase transition temperature of the temperature-decreasing particles is 61.6 ℃ and the enthalpy of phase transition is 108J/g. Weighing 100 mg/piece of cooling particles to prepare a composite filter stick, and rolling and connecting the composite filter stick to the rear end of a cigarette bar of a heating non-combustion cigarette to obtain a cigarette sample. Referring to fig. 2, the cigarette sample comprises a tobacco section 1, a hollow filter rod section 2, a first acetate fiber filter rod section 3, a cooling section 4 and a second acetate fiber filter rod section 5 which are sequentially connected from left to right, wherein the cooling particles are added into the cooling section 4, and the addition amount is 100 mg/cigarette.
Example 2
Weighing 20g of hexadecanol, melting, dispersing with 40g of polyvinylpyrrolidone and 1g of cetyl polyglucoside in 200g of water/ethanol binary solution (the mass ratio of water to ethanol is 1: 1), adopting a mechanical stirring mode, stirring at the speed of 3000 r/min for 12 hours to form stable emulsion, adding 0.5g of expanded graphite, uniformly dispersing, adding 200mL of magnesium sulfate aqueous solution with the concentration of 15% at the speed of 10mL/min, depositing, filtering and drying to obtain a solid, and crushing into particles with the particle size of about 30 meshes to obtain the cooling particles. Weighing 50 mg/piece of cooling particles to prepare a composite filter stick, and rolling and connecting the composite filter stick to the rear end of a cigarette bar of a heating non-combustion cigarette to obtain a cigarette sample. The structure of the cigarette sample in the embodiment is the same as that of the cigarette sample in the embodiment 1, and the only difference is that the cigarette smoke cooling particles provided by the embodiment are added in the cooling section, and the addition amount is 50 mg/cigarette.
Example 3
Weighing 20g of melted octadecanoic acid, dispersing the melted octadecanoic acid, 10g of polyvinylpyrrolidone, 2g of polysorbate-80 and 0.5g of cetyl glucoside in 100g of water/ethanol binary solution (the mass ratio of water to ethanol is 1: 4), performing ultrasonic treatment for 4 hours to form stable emulsion, adding 0.2g of carbon nano tube to disperse uniformly, adding 100mL of 12% ammonium sulfate aqueous solution at the speed of 15mL/min, depositing, filtering and drying to obtain a solid, and crushing the solid into particles of about 30 meshes to obtain the cooling particles. Weighing 80 mg/piece of cooling particles to prepare a composite filter stick, and rolling and connecting the composite filter stick to the rear end of a cigarette bar of a heating non-combustion cigarette to obtain a cigarette sample. The structure of the cigarette sample in the embodiment is the same as that of the cigarette sample in the embodiment 1, and the only difference is that the cigarette smoke cooling particles provided by the embodiment are added in the cooling section, and the adding amount is 80 mg/cigarette.
Example 4
Weighing 20g of octadecanol, melting, dispersing with 8g of polyvinylpyrrolidone and 1.2g of polysorbate-80 in 100g of water/ethanol binary solution (the mass ratio of water to ethanol is 1: 2), mechanically stirring at a stirring speed of 6000 rpm for 6 hours to form stable emulsion, adding 0.3g of graphene oxide, uniformly dispersing, adding 100mL of 17% sodium sulfate aqueous solution once again, depositing, filtering and drying to obtain a solid, and crushing into particles of about 30 meshes to obtain the cooling particles. Weighing 150 mg/piece of cooling particles to prepare a composite filter stick, and rolling the composite filter stick to the rear end of a cigarette stick of a heating non-combustion cigarette to obtain a cigarette sample. The structure of the cigarette sample in the embodiment is the same as that of the cigarette sample in the embodiment 1, and the only difference is that the cigarette smoke cooling particles provided by the embodiment are added in the cooling section, and the addition amount is 150 mg/cigarette.
Comparative example
The structure of the cigarette sample in the comparative example was the same as that of the cigarette sample in example 1, with the only difference that: the cooling material added in the cooling section is a folding polylactic acid film, and the addition amount is 150 mg/piece.
Detecting the temperature of the main stream smoke of the cigarette:
simulated smoking (35 mL of smoking capacity, 2s of smoking time and 30s of smoking interval) was performed on a linear smoking machine according to the smoking method specified in the standard YC/T29-1996, the heater was iQOS, and the mouth-to-mouth temperature at the center position of the end of the filter rod (as shown in FIG. 2) at the time of smoking the cigarette samples of the above-mentioned examples 1 to 4 and the control example was measured on line by a K-type thermocouple, and the results of the measurements are shown in FIGS. 3 and 4. FIG. 3 is a plot of mouth-to-mouth temperature of mainstream smoke during smoking of samples of cigarettes of example 1 and the control; FIG. 4 is a graph comparing the average temperature of mainstream smoke at the time of smoking of the cigarette samples of examples 1-4 and the control.
The results show that, compared to the cigarette samples in the control example:
the mainstream smoke temperature of the cigarette sample of example 1 was significantly lower than that of the control cigarette sample after each puff (see figure 3); after a plurality of puffs, the average temperature of the mainstream smoke of the cigarette sample in the example 1 is reduced by 17.3% compared with that of the cigarette sample in the comparative example (see fig. 4);
after multiple smoking, the average temperature of the mainstream smoke of the cigarette sample in the example 2 is reduced to a certain extent compared with that of the cigarette sample in the comparative example, and the temperature reduction extent is 7.9%;
after multiple smoking, the average temperature of the mainstream smoke of the cigarette sample in the example 3 is greatly reduced compared with that of the cigarette sample in the comparative example, and the temperature reduction amplitude reaches 19.4%;
after a plurality of puffs, the average temperature of the mainstream smoke of the cigarette sample in example 4 is greatly reduced compared with that of the cigarette sample in the comparative example, and the temperature reduction amplitude is as high as 25.5%.
Sensory quality evaluation:
the cigarette samples of examples 1-4 and the control example were subjected to comparative analysis by using the YCT138-1998 cigarette sensory evaluation standard evaluation method, and the results thereof showed that:
the cigarette sample in the embodiment 1 is obviously optimized in the aspects of smoke irritation and burning sensation compared with the control example, so that the comfort and harmony of smoke are improved, the overall smoking quality of the cigarette is improved, and the smoking experience of consumers is improved;
the cigarette sample in the embodiment 2 has certain reduction in smoke irritation and burning sensation compared with the comparison example, and the overall smoking quality of the cigarette is improved;
the cigarette sample in the embodiment 3 reduces the irritation and burning sensation of the smoke, improves the comfort and harmony of the smoke, and improves the overall smoking quality of the cigarette;
the cigarette sample in the embodiment 4 is obviously optimized in the aspects of smoke irritation and burning sensation compared with the control example, so that the comfort and harmony of smoke are improved, and the overall smoking quality of the cigarette is improved.
While the present invention has been described with reference to the embodiments shown in the drawings, the present invention is not limited to the embodiments, which are illustrative and not restrictive, and it will be apparent to those skilled in the art that various changes and modifications can be made therein without departing from the spirit and scope of the invention as defined in the appended claims.
Claims (10)
1. The cigarette smoke cooling particles are characterized by comprising an inner core and an outer shell coating the inner core, wherein the outer shell contains a water-soluble polymer and a heat conduction material, and the inner core contains an organic phase change compound.
2. The cigarette smoke cooling particle of claim 1, wherein the organic phase transition compound is selected from C22～C28Normal and iso paraffins, C16～C18Straight chain fatty alcohol, and C12～C18One of the linear fatty acids.
3. The cigarette smoke cooling particle of claim 1, wherein the water soluble polymer is polyvinylpyrrolidone.
4. The cigarette smoke cooling particle of claim 1, wherein the thermally conductive material comprises one of activated carbon, expanded graphite, carbon nanotubes, and graphene oxide.
5. The cigarette smoke cooling particle of claim 1, wherein the cooling particle comprises the following components in percentage by mass: 30 to 70 percent of organic phase compound, 24 to 66 percent of polyvinylpyrrolidone and 0.5 to 10 percent of heat conduction material.
6. The cigarette smoke cooling particle according to claim 1, wherein the particle size of the cooling particle is 20-30 meshes.
7. A method for preparing the cigarette smoke cooling particles as claimed in any one of claims 1 to 6, which comprises the following steps:
melting a certain amount of organic phase change compound, adding the melted organic phase change compound, a water-soluble polymer and a dispersing agent into water or an aqueous alcohol solution, and dispersing to obtain a uniform system;
and adding a heat conduction material, adding a certain amount of separating agent after the heat conduction material is uniformly dispersed, stopping stirring after the addition is finished, obtaining a solid object after deposition, filtration and drying, and crushing the solid object to obtain the cooling particles.
8. Use of the cigarette smoke cooling particles according to any one of claims 1 to 6 in the production of cigarette filter rods.
9. The use according to claim 8, wherein the amount of the cooling particles in the cigarette filter stick is 10-200 mg/cigarette.
10. The use according to claim 8, wherein the cigarette filter stick comprises two filter sections and a hollow cooling section sandwiched between the two filter sections, wherein the cooling particles are added to the hollow cooling section.
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