CN108703415B - Breathable smoking article with micro-explosion microcapsules - Google Patents
Breathable smoking article with micro-explosion microcapsules Download PDFInfo
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- CN108703415B CN108703415B CN201810412777.7A CN201810412777A CN108703415B CN 108703415 B CN108703415 B CN 108703415B CN 201810412777 A CN201810412777 A CN 201810412777A CN 108703415 B CN108703415 B CN 108703415B
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Abstract
The invention discloses a breathable smoking article with micro-explosion microcapsules, which comprises a cigarette core, wherein a combustion material in the cigarette core is carbon filaments or carbon particles with a microporous structure, the breathable smoking article also comprises a pore-forming agent accounting for 0-5% of the total volume of the cigarette core and ventilating particles accounting for 0-5% of the total volume of the cigarette core and having a porous structure, and the pore-forming agent forms macropores in the cigarette core through pyrolysis. The cigarette core adopts carbon particles or carbon filaments with microporous structures, and the microporous structures of the carbon particles or the carbon filaments are formed by adding the pore-forming agent into the ingredients and decomposing the pore-forming agent at high temperature, so that the air permeability of the smoking article with the microexplosion microcapsules is effectively improved. Meanwhile, the invention has simple manufacturing process and does not generate harmful residues, thereby ensuring the health of producers and smokers.
Description
Technical Field
The present invention relates to a smoking article, in particular a non-tobacco material filled smoking article.
Background
A common smoking article, such as a cigarette or cigarette, is a cigarette that is wrapped with cigarette paper around tobacco shreds in a substantially round rod or rod. Typically, the smoking end of the cigarette is also provided with a filter, such as a filter made of cellulose acetate. When a smoker lights the cigarette and performs a suction action, the tobacco filaments in the cigarette are combusted and carbonized to form a glowing combustion zone without flames, and the gradually-backward glowing combustion zone generates high-temperature airflow to perform destructive distillation on the adjacent tobacco filaments and evaporate volatile substances in the tobacco filaments to form visible aerosol, namely white smoke and light blue smoke, under the cooling of the inhaled air. The nicotine contained in the smoke is absorbed into blood through the respiratory tract and alveolus of human body, and stimulates the brain nerve cells, thereby producing the special pleasant feeling of nicotine. However, decomposition and double decomposition reactions of various chemical substances in tobacco under high temperature conditions generate a large amount of tar and various harmful substances, and thus enjoying a pleasant feeling of low-harmful nicotine and reducing tar and harmful substances have been a problem to tobacco manufacturers. In order to greatly improve public health environment, reduce tobacco harm and legal conflict caused by the tobacco harm, related technical improvement and scientific invention improve the condition. R.J Reynolds tobacco Co, describes low tar cigarettes with segmented carbon fuel combustion elements, as disclosed in U.S. Pat. Nos. 9,220,301 and 9,149,072, and Philips Moles tobacco, US9,185,939.
In order to reduce the risk of smoking the article, attempts have been made to improve filters, for example GB1410048 which discloses a filter in which a longitudinally extending region is provided with a highly permeable paper, divided into at least one region which provides a passage for smoke and at least one region which is filled with carbon, and which uses the carbon as an adsorbent for components of cigarette smoke. Chinese patent CN201821901U discloses a composite microcapsule cigarette filter, wherein one end of the filter rod is attached with a filter sheet, and the cigarette paper coated outside the filter sheet is provided with an air suction hole to realize the adsorption of the filter to harmful substances in the cigarette.
The present inventors also filed patents on electronic cigarettes heated by battery power in 2003 and 2004, including chinese inventions ZL03211903.8, ZL03212882.7 and ZL200420031182.0, etc., all of which are intended to provide low tar cigarettes to smokers with the advantages of conventional cigarettes with as few incomplete combustion and pyrolysis products as possible.
The inventor applies for a micro-explosion micro-capsule cigarette in 2016, and Chinese patent ZL 2016204193031/publication No. CN205695718U and PCT/CN2016/096011 of the invention have the appearance, the ignition mode and the smoking mode which are very similar to those of the traditional cigarette, so that smokers cannot feel that the novel micro-explosion micro-capsule cigarette is obviously different from the traditional cigarette. Moreover, the gas components of the cigarette after combustion have little influence on the aerosol components, the chemical components of the smoke aerosol sucked out mainly depend on the liquid components in the micro-explosion microcapsules, and the component proportion can be preset, so that the cigarette can provide a tar-free micro-explosion microcapsule cigarette which is highly similar to the traditional cigarette for smokers. The micro-explosion micro-capsule cigarette also needs to be optimized in the aspects of internal structure and the like, so that better experience feeling is provided for smokers.
Disclosure of Invention
The present invention aims to provide a smoking article with microexplosive microcapsules which improve the air permeability and combustion performance in the core, reduce the resistance to draw upon smoking, and maintain combustion stability.
To achieve the above object, the present invention provides the following solutions:
the breathable smoking article with the micro-explosion microcapsules comprises a cigarette core, wherein combustion materials in the cigarette core are carbon filaments or carbon particles with a microporous structure, the breathable smoking article also comprises a pore-forming agent accounting for 0-5% of the total volume of the cigarette core and ventilating particles with a porous structure accounting for 0-5% of the total volume of the cigarette core, and the pore-forming agent is decomposed at high temperature to form macropores in the cigarette core.
Furthermore, the micropore structure of the carbon filaments or the carbon particles is formed by a plurality of micropores formed after a pore-forming agent in the ingredients is decomposed at high temperature, so that the carbon filaments or the carbon particles form a ventilation structure of the cigarette core.
Further, the manufacturing process of the carbon filament or carbon granule is as follows:
1) mixing the carbon powder meeting the particle size standard, a pore-forming agent and an adhesive to prepare filaments or particles with the diameter of 0.5-2 mm;
2) after drying at low temperature, the pore-forming agent is heated and decomposed to form micropores in the carbon filaments or carbon particles, so as to facilitate combustion stability and reduce heat.
Further, in the carbon filaments or the carbon particles, the volume ratio of the pore-forming agent to the carbon powder is 1-3: 1, preferably 1.5-2.5: 1.
further, the pore-forming agent is ammonium carbonate, ammonium bicarbonate, ammonium chloride or other high-temperature decomposable compounds.
Further, the binder is cellulose.
Further, the ventilation particles are foam metal particles, foam glass particles or porous silicate particles.
Further, the micro-explosion microcapsule is a monomer micro-explosion microcapsule, a string-shaped conjoined micro-explosion microcapsule or a sheet-shaped conjoined micro-explosion microcapsule.
Furthermore, the capsule wall material of the micro-explosion microcapsule is aluminum foil or low-temperature alloy foil.
Further, the cigarette core is wrapped by cigarette paper, and the cigarette paper is provided with a flame-retardant coating.
The invention has the following technical effects:
1. the air permeability of the cigarette core is improved. The cigarette core adopts carbon granules or carbon filaments with porous structures, the pore-forming agent is added in the ingredients, and the pore-forming agent is decomposed at high temperature to form the microporous structures of the carbon granules or the carbon filaments, the manufacturing process is simple, and no harmful residue is generated, so that the health of producers and smokers is ensured.
2. The carbon particles or carbon filaments with the microporous structure effectively solve the problem of the air permeability of the smoking article with the microexplosion microcapsules. Compared with micropores in carbon particles or carbon filaments, the particle size of macropores formed by the pore-forming agent added in the cigarette core is larger than that of micropores in the ventilation particles, so that the ventilation performance of the cigarette core is better, a good auxiliary air passage is provided for the cigarette core, and the cigarette core has good ventilation performance and combustion stability.
Drawings
The following schematic drawings can be better understood with reference to the examples, which are illustrative and do not limit the technical solution of the present invention. Specifically, the structures, proportions, sizes, and the like, which are illustrated in the accompanying drawings, are intended to be included within the scope of the present disclosure, and are not intended to limit the scope of the present disclosure.
FIG. 1 is a schematic representation of the structure of an exemplary monomeric microexplosive microcapsule of the present invention;
FIG. 2 is a side view of an exemplary monomeric microexplosive microcapsule of the present invention;
FIG. 3 is a schematic structural view of an exemplary single string of conjoined microexplosive microcapsules of the present invention;
FIG. 4 is a schematic structural view of an exemplary sheet-like integral microexplosive microcapsule of the present invention;
figure 5 is a longitudinal cross-sectional view of a smoking article in accordance with an exemplary embodiment of the present invention; the figure shows that the cigarette core is mixed with carbon particles and monomer micro-explosion microcapsules;
figure 6 is a longitudinal cross-sectional view of a smoking article in accordance with an exemplary embodiment of the present invention; the cigarette core in the figure is mixed with carbon particles, monomer micro-explosion microcapsules and a pore-forming agent, wherein the pore-forming agent is decomposed at high temperature to form macropores;
figure 7 is a longitudinal cross-sectional view of a smoking article in accordance with an exemplary embodiment of the present invention; the cigarette core in the figure is mixed with carbon particles, monomer micro-explosion microcapsules, pore-forming agents and porous ventilation particles, wherein the pore-forming agents are decomposed at high temperature to form macropores.
Detailed Description
The present invention will be described in further detail with reference to the accompanying drawings and specific embodiments.
As shown in fig. 1 and 2, the single micro-capsule 1 for smoking article used in the present invention can be filled in the core of the smoking article, and is composed of a capsule wall 11 and an aerosol 12 generator wrapped by the capsule wall, when the core is burnt, the temperature of the burning zone makes the aerosol generator of the micro-capsule near the burning zone vaporized until the capsule wall 11 is exploded, and the aerosol generated by the aerosol generator 12 overflows from the capsule wall. Alternatively, the capsule wall 11 bursts and undergoes a subsequent melting deformation, and the aerosol generated by the aerosol generator escapes from the capsule wall 11. The aerosol-generating article may be a liquid, a gel or a mixture of solids and liquids, depending on the product requirements. The capsule wall 11 is made of metal foil, alloy foil, low-temperature glass, high-temperature-resistant polymer material or ceramic material. Preferably, the micro-capsule 1 of the present embodiment uses a metal foil such as a copper foil or a nickel foil, or an alloy foil as a material of the capsule wall 11, and the capsule wall 11 of the micro-capsule is likely to be melted or not melted at a high temperature after the explosion, and the entire non-melted capsule wall 11 is left in the soot. Because the micro-explosion microcapsules 1 used in the invention are mixed in the combustion material of the cigarette core, in the process of the backward combustion of the cigarette core, the high-temperature condition of the glowing combustion area explodes the nearby micro-explosion microcapsules, and the aerosol overflows, and the material of the capsule wall 11 only generates melting deformation or does not melt and does not generate chemical reaction without adopting the excipient and the film-forming material used by the microcapsules or the microcapsules in the prior art, thereby avoiding the generation of harmful chemical substances caused by the chemical reaction of the material of the capsule wall 11 under the high-temperature condition.
The transverse diameter of the micro-explosion microcapsule 1 perpendicular to the length direction of the cigarette core is less than 2mm, and the preferred transverse diameter is 0.05-0.5 mm. The encapsulated aerosol hair growth substance may weigh between 0.0001mg and 50mg, preferably between 0.001mg and 5mg, more preferably between 0.001mg and 2 mg. Further, the shape of the micro-explosion micro-capsule is not limited to the shape shown in the figure, and may be a strip, a sphere, a hemisphere, a long circle, a half long circle, a flat, a column, a square, a granule, a filament, or other suitable shape.
The invention can also use a single string of conjoined micro-explosion microcapsules 2 as shown in figure 3, which is formed by a thin tube made by stretching metal foil, low-temperature glass, high-temperature-resistant high polymer material or ceramic material, and is continuously encapsulated into conjoined micro-explosion microcapsules 2 after being filled with the aerosol propellant, wherein each single string is provided with a plurality of micro-explosion microcapsules 21 with certain intervals.
As shown in fig. 4, the microexplosion microcapsule filled in the tobacco core can also be a sheet-shaped conjoined microexplosion microcapsule 3, and one sheet-shaped conjoined microexplosion microcapsule is provided with microexplosion microcapsules 31 in multiple rows and columns.
The present inventors have previously filed patent applications including the chinese invention patent ZL 2016204193031/publication No. CN205695718U, and international patent application PCT/CN2016/096011, which describe compositions relating to the structure of microburst microcapsules and the aerosol generating organisms within the capsules, and which are incorporated herein in their entirety. Any suitable microexplosive microcapsules described in the above patent applications can be used in the present invention.
The invention provides a smoking article cigarette, as shown in figure 5, the cigarette comprises a cigarette core 4, cigarette paper 5 and a filter 6, wherein the cigarette core 4 and the filter 6 are externally wrapped with the cigarette paper 5. The cigarette core 4 is filled with a combustion material 7 and a plurality of monomer micro-explosion microcapsules 1, and the combustion material of the cigarette core 4 is preferably a carbon filament or carbon granule 7 with a microporous structure.
The carbon filament or carbon granule 7 with microporous structure is produced by pulverizing charcoal into carbon powder of 120 meshes or more, adding pore-forming agent in proportion, and using proper amount of cellulose as adhesive. Extruding the mixture into fine wires with the diameter of 0.5 to 2mm or granulating the fine wires by an extruder, drying the fine wires, and then placing the mixture at a high temperature to decompose the pore-forming agent. If the pore-forming agent is ammonium bicarbonate, preferably ammonium bicarbonate powder with a sieve of more than 80 meshes, the ammonium bicarbonate will release carbon dioxide and ammonia gas at 120 ℃ and overflow from the material, thereby generating a plurality of micropores (not shown) in the carbon filaments or the carbon granules. The shape and cross section of the carbon filaments and carbon particles 7 are not limited, and they may be circular, square, polygonal, irregular, etc., and in any shape, they are required to satisfy the air permeability and combustion performance required for the product, and to contribute to combustion stability and heat reduction. Wherein, the volume ratio of the pore-forming agent to the carbon raw material is preferably 1.5-2.5: 1. the pore-forming agent may also be ammonium carbonate, ammonium chloride or other high temperature decomposable salts. In actual production, pore-forming agents with proper particle sizes are selected according to the shape and the diameter of the smoking article, so that good air permeability and combustibility are provided for cigarette cores of different products.
In order to precisely adjust the burning rate, a flame retardant coating 51 may be coated in the cigarette paper 5 as an option. The flame retardant coating 51 may be in the form of stripes, mesh, spots, etc. The fire-retardant coating adhesive slurry can be prepared by using cellulose as adhesive and using single or mixed powder containing inorganic salt such as inorganic substances of calcium carbonate, magnesium carbonate, calcium hydroxide, silicate, titanium dioxide, graphite powder and aluminium powder, and cellulose to prepare the adhesive slurry fire-retardant coating.
The filter 6 is a rear part of a cigarette (cigarette), and can be used as a mouthpiece component, or different functional designs can be added, such as filtering solid cigarette ash in the cigarette, further filtering a part of harmful substances such as tar in the smoke and reducing the uncomfortable feeling of the smoker after smoking, and the filter can be made of common materials such as cellulose acetate, polyester net, polypropylene net, polylactic acid (PLA) fiber bundle and the like. Of course, filters of a particular functional, structural design are also included. The present invention does not impose any limitations on the structure, materials and function of the filter.
If the air permeability of the cigarette core is further enhanced, pore-forming agents and/or porous ventilation particles 9 can be added in proportion and mixed with the carbon filaments or carbon particles 7 with the microporous structures. The ventilating particles 9, such as foamed metal particles, foamed glass particles or porous silicate particles, etc., can form occupied spaces of the cigarette core, and the ventilating particles 9 are randomly distributed to form a secondary random air channel structure.
As shown in figure 6, the cigarette comprises a cigarette core 4, cigarette paper 5 and a filter 6, wherein the cigarette core 4 and the filter 6 are externally wrapped with the cigarette paper 5. The cigarette core 4 is filled with a combustion material 7, a plurality of monomer micro-explosion microcapsules 1 and a pore-forming agent ammonium bicarbonate, and is mixed according to the proportion meeting the product requirements. The whole cigarette is placed at the temperature of 120 ℃ at which the ammonium bicarbonate can be completely decomposed, and the ammonium bicarbonate is decomposed at high temperature to form macropores 8 in the cigarette core. Wherein the adding proportion of the ammonium bicarbonate is not more than 5 percent of the total volume of the cigarette core. In this embodiment, the combustion material 7 is carbon filaments or carbon particles having a microporous structure, and the pore-forming agent added to the tobacco core is sieved through 20 to 60 mesh, preferably 20 to 40 mesh, which is larger than the pore-forming agent in the carbon filaments or carbon particles.
As shown in figure 7, the thick cigarette comprises a cigarette core 4, cigarette paper 5 and a filter 6, wherein the cigarette core 4 and the filter 6 are externally wrapped with the cigarette paper 5. On the basis of example two of fig. 6, the addition of ventilation particles 10 may be considered as an auxiliary stochastic airway. Specifically, the cigarette core 4 is filled with a combustion material 7, a plurality of monomer micro-explosion microcapsules 1, a pore-forming agent ammonium carbonate and foam glass 10, the components are mixed according to the proportion meeting the product requirements, the whole cigarette is placed under the temperature condition that the ammonium carbonate can be completely decomposed, the ammonium carbonate is decomposed to form macropores 8 in the cigarette core, the adding proportion of the foam glass 10 is not more than 5% of the total volume of the cigarette core, and the macropores formed by the ammonium carbonate are not more than 5% of the total volume of the cigarette core. Similarly, the pore former added to the tobacco core has a somewhat larger particle size than the pore former in the carbon filaments or particles. Of course, alternatively, only the air-permeable particles may be added on the basis of the example one in fig. 5, without adding the pore-forming agent.
When the micro-explosion micro-capsule cigarette is ignited and breathes in, the hot air flow and the radiant heat generated by the combustion of the cigarette core 4 cause the micro-explosion micro-capsules 1, 2 and 3 to explode or melt and form aerosol smoke under the cooling of the inhaled air, and the aerosol smoke is sucked out from the gaps of the micro-explosion micro-capsules in the inhalation passage.
The invention is not limited to the embodiments discussed above. The foregoing description of the specific embodiments is intended to explain and illustrate the principles involved. The embodiments described above are provided to disclose the best mode for carrying out the invention, so that those skilled in the art can apply the embodiments of the invention and various alternatives to achieve the object of the invention. Obvious modifications or alterations based on the teachings of the present invention should also be considered as falling within the scope of the present invention.
Claims (11)
1. A breathable smoking article with micro-explosion microcapsules comprises a smoke core, wherein the smoke core is filled with a combustion material and micro-explosion microcapsules, and is characterized in that the combustion material in the smoke core is carbon filaments or carbon particles with a microporous structure, the breathable smoking article also comprises a pore-forming agent accounting for 0-5% of the total volume of the smoke core and ventilating particles accounting for 0-5% of the total volume of the smoke core, in the manufacturing process, the breathable smoking article is integrally placed under the temperature condition that the pore-forming agent can be completely decomposed, and the pore-forming agent is decomposed at high temperature to form macropores in the smoke core; the ventilation particles form occupied spaces of the cigarette core, and the ventilation particles are randomly distributed to form an auxiliary airway structure;
the aeration particles are foam metal particles, foam glass particles or porous silicate particles.
2. The ventilated smoking article of claim 1, wherein the microporous structure of the carbon filaments or particles is a plurality of micropores formed by pyrolysis of pore formers in the formulation such that the carbon filaments or particles form an air-permeable structure of the wick.
3. The ventilated smoking article of claim 2, wherein the carbon filaments or particles are produced by a process comprising:
1) mixing the carbon powder meeting the particle size standard, a pore-forming agent and an adhesive to prepare filaments or particles with the diameter of 0.5-2 mm;
2) after drying at low temperature, the pore-forming agent is heated and decomposed to form micropores in the carbon filaments or carbon particles, so as to facilitate combustion stability and reduce heat.
4. The ventilated smoking article of claim 3, wherein the carbon filaments or particles have a pore former to carbon powder volume ratio of 1-3: 1.
5. the ventilated smoking article of claim 4, wherein the pore former is ammonium carbonate, ammonium bicarbonate, ammonium chloride, or other high temperature decomposable compounds.
6. The ventilated smoking article of claim 5, wherein the binder is cellulose.
7. The breathable smoking article of claim 6, wherein the microburst microcapsules are monolithic microburst microcapsules, string-shaped conjoined microburst microcapsules, or sheet-shaped conjoined microburst microcapsules.
8. The breathable smoking article of claim 7, wherein the wall material of the microburst microcapsules is aluminum foil or low temperature alloy foil.
9. The breathable smoking article of claim 7, wherein said core is wrapped with a cigarette paper, said cigarette paper having a flame retardant coating thereon.
10. The breathable smoking article of claim 1, wherein the breathable smoking article is a cigarette comprising a core, a cigarette paper and a filter tip, the core and the filter tip are externally wrapped with the cigarette paper, the core is filled with a combustion material, a plurality of monomer micro-explosion microcapsules and a pore-forming agent ammonium bicarbonate; putting the whole cigarette under the temperature condition that ammonium bicarbonate can be completely decomposed, and decomposing the ammonium bicarbonate at high temperature to form macropores in the cigarette core; wherein the adding proportion of the ammonium bicarbonate is not more than 5 percent of the total volume of the cigarette core; the particle size of the pore-forming agent added into the cigarette core is larger than that of the pore-forming agent in the carbon filaments or carbon particles, and the cigarette is sieved by a 20-60 mesh sieve.
11. The breathable smoking article of claim 1, wherein the breathable smoking article is a coarse cigarette comprising a cigarette core, a cigarette paper and a filter tip, the cigarette paper is wrapped outside the cigarette core and the filter tip, the cigarette core is filled with a combustion material, a plurality of monomer micro-explosion microcapsules, a pore-forming agent and foam glass, the whole cigarette is placed at a temperature condition that ammonium carbonate can be completely decomposed, the ammonium carbonate is decomposed to form macropores in the cigarette core, the addition proportion of the foam glass is not more than 5% of the total volume of the cigarette core, and the macropores formed by the ammonium carbonate are not more than 5% of the total volume of the cigarette core; the particle size of the pore-forming agent added to the tobacco core is larger than that of the pore-forming agent in the carbon filaments or carbon particles.
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| CN109123761B (en) * | 2018-11-01 | 2020-05-29 | 四川三联新材料有限公司 | Smoking product rolling method and smoking product |
| CN215381479U (en) * | 2021-04-06 | 2022-01-04 | 韩力 | Disposable consumable of gas heating type smoking article and smoking article thereof |
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