KR20210127243A - Aerosol-generating articles, methods of manufacture and uses thereof - Google Patents

Abstract

An aerosol-generating article comprising: an aerosol atomization unit and a smoke cooling unit, wherein the smoke cooling unit is located downstream of a flow of smoke generated from the aerosol atomization unit. additionally also comprising a filtration unit located downstream of the smoke flow passing through the smoke cooling unit; or a hollow unit located upstream of the smoke flow passing through the smoke cooling unit. The structure is comprised of a collection of particulate matter, and the structure includes a gap for passage of cigarette smoke. The interval for the passage of smoke of the cigarette may be a three-dimensional and non-linear interval. The structure is bar type. Ensure that the smoke has a smooth passage when the cigarette aerosol passes through the cooling unit. Since the porous material has a through hole, it has a large smoke cooling area and at the same time can maintain a low intake resistance, thereby securing the flow of smoke and improving the experience of cigarette consumers.

Description

Aerosol-generating articles, methods of manufacture and uses thereof

The present invention belongs to the field of tobacco technology and relates to products for treating smoke, in particular for lowering the smoke temperature of cigarettes.

As the global tobacco regulatory environment becomes stricter and consumers are more concerned about their health, new tobacco products that significantly reduce the emission of harmful substances in tobacco are gradually becoming the development point of the tobacco industry around the world. Heated non-combustible cigarettes use a special heat source to heat the cut tobacco (at temperatures below 400°C, even lower), which is a new type of tobacco product in which the cut tobacco only heats and does not burn, so the emission of harmful substances in the smoke can be greatly reduced. Currently, heated non-combustible cigarettes generally have a problem with the high temperature of the smoke gas, which causes irritation or burning of the smoke, thereby reducing the comfort of inhalation. Lowering will further reduce the amount of smoke of the product and further affect the inhalation experience of the product.Therefore, reducing the smoke temperature of the heated non-combustible cigarette is an important technology of the heated non-combustible cigarette.Chinese patent CN104203015 discloses an aerosol-generating article with an aerosol cooling unit. As disclosed, the cooling unit of the generated article is composed of a layer of corrugated polylactic acid film.Chinese patent CN107259638A discloses the function of lowering the smoke temperature and increasing the flavor of the smoke, including the film layer smoking rod made of polyvinyl chloride, polylactic acid, etc. Disclosed is a low-temperature cigarette equipped with a low-temperature cigarette.The smoking rod, which can reduce the smoke temperature, mainly reduces the smoke temperature of the tobacco product by absorbing heat through the glass transition of a polymer material, that is, transition from a glass state to a highly elastic state. Since there is a problem of melting or fusion bonding when glass transition occurs in This prevents flow and reduces the cooling surface area, resulting in an excessively high smoke temperature.

In order to overcome the above technical needs and deficiencies of the prior art, it is an object of the present invention to provide an aerosol-generating article and a related method capable of rapidly reducing the smoke temperature of a cigarette.

The technical solutions adopted by the present invention to achieve the above purpose are as follows:

An aerosol-generating article comprising an aerosol atomization unit and a smoke cooling unit, wherein the smoke cooling unit is located downstream of a flow of smoke generated from the aerosol atomization unit.

Moreover, also comprising a filtration unit located downstream of the smoke flow passing through the smoke cooling unit.

Optionally, also comprising a hollow unit positioned upstream of the smoke flow passing through the smoke cooling unit.

Optionally, the smoke cooling unit is a structure composed of aggregation of particulate matter, the structure comprising a gap for passage of cigarette smoke and at least one smoke continuous passageway.

Optionally, the spacing of the smoke cooling unit for passage of cigarette smoke is a three-dimensional and non-linear mesh spacing.

Optionally, the smoke cooling unit is of bar type.

Optionally, the porosity of the smoke cooling unit is 40%-90%.

Optionally, the smoke cooling unit comprises a base granule, a binder granule, and a packaging material; Forming an adhesion point between the binder granules and the binder granules, the binder granules and the basic granules, and the basic granules and the basic granules, physically bonding them at a plurality of positions, and the packaging material is packaged on the outside to form a porous bar.

Optionally, the particulate material is a particulate material capable of lowering the cigarette smoke temperature and having a low adsorption rate for active ingredients in the cigarette smoke.

Optionally, the base granules are active granules or inactive granules inactivated by covering the film layer.

Optionally, in the inert granules, the thickness of the outer film layer is 0-0.2 mm, the film layer accounts for 0-50% of the total mass of the granules, and the thickness of the outer film layer or the mass occupied by the total granules is all 0 , indicating that the film layer is not overlaid on the inert granules;

When the base granules are active granules, deactivation treatment is required, and in the inactivated active granules, the thickness of the outer film layer is 0.001-0.2 mm, and the outer film layer accounts for 0.001-50% of the total granule mass.

Optionally, the inert granules are granules having an adsorption to nicotine in the smoke aerosol of less than ^{3.0 mg/cm 3 .}

Optionally, the active granules include organic or inorganic granules, and the inorganic granules are aluminum oxide, zirconium oxide, calcium carbonate spheres, glass spheres, silicon dioxide, iron, copper, aluminum, gold, platinum, magnesium silicate spheres or calcium sulfate; The organic granules are cellulose acetate, cellulose acetate propionate, cellulose acetate butyrate, microcrystalline cellulose, sucrose powder, dextrose, lactose, powder sugar, glucose, mannitol, starch, methyl cellulose, ethyl cellulose, polylactic acid, polyethylene, poly Propylene, polyhydroxybutyrate, poly ε-capolactone, polyglycolic acid, polyhydroxyalkanoate, including a thermoplastic resin according to starch.

Optionally, the active granules are granules having an adsorption to nicotine in the smoke aerosol of at least ^{3.0 mg/cm 3 .}

Optionally, the active granules include molecular sieves, activated carbon, diatomaceous earth, zeolite, perlite, ceramics, sepiolite, acid clay, ion exchange resin; The inert granules include aluminum oxide, zirconium oxide, calcium carbonate spheres, glass spheres, silicon dioxide, iron, copper, aluminum, gold, platinum, magnesium silicate spheres or calcium sulfate.

Optionally, said film layer is made of a film-forming material.

Optionally, the film-forming material is cellulose acetate, cellulose acetate propionate, cellulose acetate butyrate, hydroxy propyl cellulose, hydroxy propyl methyl cellulose, methyl cellulose, ethyl cellulose, polyvinyl pyrrolidone, polyethylene acetal diethyl amine acetate , styrene maleic acid copolymer, styrene vinylpyridine copolymer, cellulose phthalic acid, hydroxypropylmethylcellulose phthalate, cellulose acetate/polyethylene glycol, methyl cellulose/polyethylene glycol, carboxymethyl cellulose/polyethylene glycol, hypromellose/polyethylene glycol , ethyl cellulose/polyethylene glycol or acrylic resin/polyethylene glycol, containing polylactic acid.

Optionally, the basic granular form comprises spherical, quasi-spherical, round cake-shaped, flaky, strip-shaped, needle-shaped, polymorphic, facet-shaped or random.

Optionally, the base granules have an average diameter in at least one dimension from a lower limit of 50 microns, 100 microns, 150 microns, 200 microns or 250 microns to an upper limit of 5000 microns, 2000 microns, 1000 microns, 900 microns or 700 microns. provided.

Optionally, the binder granules are polyethylene, polypropylene, polylactic acid, polyolefin, polyester, polyamide, polyacrylic acid, polyvinyl compound, polytetrafluoroethylene, polyether ether ketone, polyethylene terephthalate, polybutylene terephthalate , polycyclohexylene dimethylene terephthalate, polytrimethylene terephthalate, polyacrylic acid compound, polymethyl methacrylate, acrylonitrile-butadiene-styrene, styrene-acrylonitrile, styrene-butadiene, styrene -Containing at least one selected from maleic acid, cellulose acetate, cellulose acetate butyrat, plastic cellulose plastic, cellulose propyanate, ethyl cellulose, any one derivative thereof, or any one copolymer thereof, and combinations thereof .

Optionally, the shape of the binder granules includes spherical, shaped, granular, potato-shaped, irregular shape, and combinations thereof.

Optionally, the binder granules have an average diameter in at least one dimension from a lower limit of 5 microns, 10 microns, 50 microns, 100 microns or 150 microns to an upper limit of 500 microns, 400 microns, 300 microns, 250 microns or 200 microns. provided.

Optionally, the binder granules are about 0.10 g/cm ³ to about 0.55 g/cm ³ and any subset therebetween (eg about 0.17 g/cm ³ to about 0.50 g/cm ^{3 )} or from about 0.20 g/cm ³ to about 0.47 g/cm ³ ).

The packaging material is a plug wrap in weight of 20-40 g and a thickness of 0.08-0.12 mm.

Also provided is the use of the aerosol-generating article in a heated non-combustible cigarette.

Compared to the reference aerosol-generating article having a filter rod containing cellulose acetate tow, the aerosol-generating article comprising the smoke cooling function unit of the present invention has an excellent cooling effect and reduces the temperature by at least 2°C.

Compared with the reference cigarette 3R4F, the aerosol-generating article comprising the smoke cooling function unit of the present invention has an excellent adsorption effect on phenol, and the reduction can reach 93.2%.

The present invention provides an aerosol-generating article having a smoke cooling function unit. The article includes a plurality of units, and is formed by combining the rods through composite molding of the rods. The unit comprises an aerosol atomization unit and a smoke temperature cooling unit located downstream of the aerosol atomization unit in the composite molded article. In some applications, the smoke cooling unit is constructed of a porous material comprising coated base granules. The porous material has a porosity of 40% to 90%, and a closed pressure drop of less than 2 mmH2O/mm in length. The smoke cooling unit comprises a base granule and a polymer binder. After mixing the base granule and the polymer binder, it is The coated elongate porous material is formed by heating to bond between the base granules and the binder and between the binder and the binder at a plurality of contact points. When the aerosol of the heated incombustible cigarette passes through the cooling unit, the base granular surface film layer and the binder cause a phase change endotherm, and the inner material of the cooling unit has a three-dimensional arrangement structure, which facilitates the conduction of thermal energy in the transverse direction. This achieves a better cooling effect. At the same time, the porous material maintains its original shape and ensures smooth passage of smoke. Because the porous material has a through hole, it has a large cooling area while maintaining a low suction resistance, thereby securing the passage of smoke and improving the experience of cigarette consumers.

1 is a schematic diagram of a structural embodiment of a two-stage aerosol-generating article having a unit for reducing smoke temperature according to the present invention;
Figure 2 is a schematic diagram of a structural embodiment of a three-stage aerosol-generating article having a unit for reducing smoke temperature according to the present invention;
3 is a schematic diagram of a structural embodiment of a four-stage aerosol-generating article having a unit for reducing smoke temperature according to the present invention;
4 is a schematic diagram of a structural embodiment of another four-stage aerosol-generating article having a unit for reducing smoke temperature according to the present invention;
5 is a structural schematic diagram of a four-stage aerosol-generating article according to the prior art (reference sample including cellulose acetate tow).

The present invention relates to aerosol-generating articles and related methods capable of rapidly reducing the smoke temperature of cigarettes.

The aerosol-generating article is formed by a plurality of units combining the rods through composite molding of the rods. The plurality of said units includes an aerosol atomization unit and a smoke temperature cooling unit located downstream of the aerosol atomization unit. In some applications, the smoke cooling unit is constructed of a porous material comprising coated cellulose acetate granules. The porous material has transverse and longitudinal through-holes, has a porosity of 40% to 90%, has a cellulose acetate granule load of at least 5 mg/mm, and has a closing pressure drop of less than _{2 mmH 2 O/mm in length.} . The aerosol that has passed through the smoke cooling unit is cooled to lower its temperature.

The pore volume of the porous material is the remaining free space after the cellulose acetate granules occupy the space. To determine the pore volume, the average value of the upper and lower diameters according to the particle size of the cellulose acetate granules is first calculated, and then the density of cellulose acetate is used to determine the pore volume. Calculate the volume (assuming a sphere according to its mean diameter). The porosity is calculated by the formula for calculating the porosity described in Chinese Patent CN103330283.

As used herein, the term “closing pressure drop” refers to the case where the sample is passed by an air stream under stable conditions when the volume flow rate at the outlet is 17.5 mL/sec, and when the sample is completely sealed in the measuring device so that the air flow is not packaged If it cannot pass through, it indicates the static pressure difference between both ends of the sample. In the present invention, the closing pressure drop was measured according to the recommended method 41 of CORESTA ('Joint Center for Tobacco Science Research') issued in June 2007. A relatively high closing pressure drop means that the smoker must aspirate the smoking device with a relatively high force.

Next, the present invention will be further described in combination with the embodiments shown in the drawings.

Example 1

As shown in FIG. 1 , in a two-stage aerosol-generating article ( 10 ) having a smoke temperature cooling unit of the present invention, it includes two units: an aerosol atomization unit ( 20 ) and a smoke cooling unit ( 30 ). The two units are sequentially coaxially assembled into the job rods 11 by using the cigarette paper 50 in the composite molding machine of the job rods. The aerosol atomization unit 20 is located at the distal end 13 of the jaw, the smoke cooling unit 30 is located downstream of the aerosol atomization unit, and the jaw 11 has a mouthpiece end 12 . In the case of composite assembly of the bar 11 with a molding machine, the bar 11 has a length of approximately 45 mm, an outer diameter of approximately 7.2 mm, and an inner diameter of approximately 6.9 mm.

The aerosol atomization unit 20 comprises tobacco material in the form of rods or pleats and is wrapped in a paper bag (not shown) to form a stick by being wound by a cigarette making device. The tobacco material comprises an additive, wherein the additive comprises glycerin and propylene glycol to form an aerosol.

The smoke cooling unit 30 is located downstream of the aerosol atomization unit and is wrapped by a paper plug wrap 31 as a porous rod comprising cellulose acetate granules. The perforated jaw rod has a length of approximately 33 mm and an outer diameter of approximately 7.2 mm and an inner diameter of approximately 6.9 mm. In this embodiment, the smoke cooling unit is formed by heat-bonding cellulose acetate granules wrapped in a film layer and an ultra-high molecular weight polyethylene binder under certain conditions. .Ultra-high molecular weight polyethylene binder mechanically bonds granules and binder granules at various contact points at their melting temperature. Since the binder hardly flows at its melting temperature, penetrability of the gap formed between the granules was ensured, so that a plurality of passages extending along the length of the smoke cooling unit 30 were formed. The porous bar is made of cellulose acetate granules with an average diameter of 1.2 mm in which 25 wt % of GUR2105 and 75 wt % of polyethylene glycol/hydroxypropyl methyl cellulose film are packed on the surface from Ticona, LLC. The porous bar is produced by mixing GUR 2015 resin and cellulose acetate granules, and then filling (free sintering) the mold with the mixture under the condition that no pressure is applied to the heated mixture. After heating the mold to 200° C. and after 40 minutes, the porous rod is removed from the mold, cooled, and packaged with a paper plug wrap 31 having a weight of 20 g and a thickness of 0.08 mm. Cut the corresponding bar to the same length.

The smoke cooling unit contains 10 mg/mm cellulose acetate granules, the closing pressure drop is 5.5 mmH ₂ O and the porosity is 72%.

In the aerosol-generating article shown in Figure 1, a heating element is inserted into the side of the aerosol atomization unit to heat the tobacco material in the aerosol atomization unit so that volatile compounds are released from the tobacco material. The consumer inhales at the mouth end 12 of the aerosol-generating article 10 and these volatile compounds are condensed and atomized to form an aerosol and delivered to the consumer's mouth via a jaw rod 11 . The temperature of the aerosol is reduced by inhaling the aerosol and performing heat exchange through the smoke cooling unit 30 .

The Canadian deep inhalation mode (HCI) was used to mimic smoking according to the cigarette inhalation module specified in the national standard GB/T19609-2004. The effect of the smoke cooling unit on the aerosol mainstream temperature of each oral inhalation was investigated and compared to a reference aerosol-generating article comprising cellulose acetate tow (see Figure 5). The thermocouple temperature probe is located 5 mm away from the center of the tow 40. The test results are shown in Table 1.

[Table 1 Mainstream Aerosol Temperature Test Results]

Example 2

As shown in Figure 2, in a three-stage aerosol-generating article (10) having a smoke temperature cooling unit of the present invention, three units: an aerosol atomization unit (20), a smoke cooling unit (30) and a tow (40) includes The aerosol atomization unit 20 is located at the distal end 13 of the jaw rod, the smoke cooling unit 30 is located downstream of the aerosol atomization unit, and the tow 40 is located downstream of the smoke cooling unit, the jaw rod ( 11) has a mouthpiece end (12). The three units are tightly packed sequentially and coaxially using a cigarette paper 50 and assembled into a rod 11 . In the case of composite assembly, the rod 11 has a length of approximately 45 mm, an outer diameter of approximately 7.2 mm, and an inner diameter of approximately 6.9 mm.

The aerosol atomization unit 20 comprises tobacco material in the form of rods or pleats and is wrapped in a paper bag (not shown) to form a stick by being wound by a cigarette making device. The tobacco material comprises an additive, wherein the additive comprises glycerin and propylene glycol to form an aerosol.

The smoke cooling unit 30 is located adjacent downstream of the aerosol atomization unit and is wrapped by a paper plug wrap 31 as a porous rod comprising cellulose acetate granules. In this embodiment, the smoke cooling unit 30 is formed by heat-bonding cellulose acetate granules wrapped in a film layer and an ultra-high molecular weight polyethylene binder under certain conditions. .Ultra-high molecular weight polyethylene binder mechanically bonds granules and binder granules at various contact points at their melting temperature. Since the binder hardly flows at its melting temperature, penetrability of the gap formed between the granules was ensured, so that a plurality of passages extending along the length of the smoke cooling unit 30 were formed. The porous bar is made of cellulose acetate granules with an average diameter of 1.2 mm in which 25 wt % of GUR2105 and 75 wt % of polyethylene glycol/hydroxypropyl methyl cellulose film are packed on the surface from Ticona, LLC. The porous working rod is produced by mixing GUR 2015 resin and cellulose acetate granules, and then filling (free sintering) the mold with the mixture under the condition that no pressure is applied to the heated mixture. After heating the mold to 200° C. and after 40 minutes, the porous rod is removed from the mold, cooled, and packaged with a paper plug wrap 31 having a weight of 20 g and a thickness of 0.08 mm. Cut the corresponding bar to the same length.

The smoke cooling unit of the porous job rod contains 10 mg/mm cellulose acetate granules, has a length of approximately 25 mm, an outer diameter of approximately 7.2 mm, an inner diameter of approximately 6.9 mm, and a closing pressure drop of 4.2 mmH ₂ O; The porosity is 72%.

The tow 40 applied is a traditional cellulose acetate tow bar, the length is 8 mm, the outer diameter of the bar is about 7.2 mm, and the inner diameter is about 6.9 mm.

In the aerosol-generating article shown in Fig. 2, a heating element is inserted into the side of the aerosol atomization unit to heat the tobacco material in the aerosol atomization unit so that volatile compounds are released from the tobacco material. The consumer inhales at the mouth end 12 of the aerosol-generating article 10 and these volatile compounds are condensed and atomized to form an aerosol and delivered to the consumer's mouth via a jaw rod 11 .

As the aerosol is inhaled and heat exchange is performed through the smoke cooling unit 30, the temperature of the aerosol is reduced, moisture in the aerosol is blocked, and the filtration efficiency of phenol in the aerosol is improved.

The Canadian deep inhalation mode (HCI) was used to mimic smoking according to the cigarette inhalation module specified in the national standard GB/T19609-2004. The fraction is blocked using a Cambridge filter and phenol is quantitatively determined by HPLC fluorescence. The effect of the smoke cooling unit on the aerosol liquor temperature and total liquor aerosol phenol content of each oral inhalation was investigated and compared with a reference aerosol-generating product comprising a cellulose acetate tow cooling unit and a reference cigarette 3R4F, respectively (see Figure 5). ). The thermocouple temperature probe is located 5 mm away from the center of the tow 40. The test results are shown in Tables 2 and 3.

[Table 2 Mainstream Aerosol Temperature Test Results]

[Table 3 Comparative experiment on alcohol content of aerosol phenol]

Example 3

As shown in Figure 3, in a four-stage aerosol-generating article (10) having a smoke temperature cooling unit of the present invention, an aerosol atomization unit (20), a hollow cellulose acetate tube (60), a smoke cooling unit (30) and It includes four units called tow (40). The four units are sequentially coaxially packed using cigarette paper 50 and assembled into a job rod 11. The aerosol atomization unit 20 is located at the distal end 13 of the jaw rod and is hollow The cellulose acetate tube 60 is located downstream of the aerosol atomization unit, the smoke cooling unit 30 is located downstream of the hollow cellulose acetate tube, and the tow 40 is located downstream of the smoke cooling unit. ) has a mouthpiece end 12. When assembled by a cigarette machine, the jaw rod 11 has a length of approximately 45 mm, an outer diameter of approximately 7.2 mm, and an inner diameter of approximately 6.9 mm. The unit 20 contains tobacco material in rod form or pleat form and is wrapped in a paper bag (not shown) by being wound by a cigarette making device to form a stick, wherein the tobacco material contains an additive, wherein the additive forms an aerosol It contains glycerin and propylene glycol for the purpose of making.The hollow cellulose acetate tube 60 is located adjacent to the downstream of the aerosol atomization unit and is made of cellulose acetate.The aerosol is first mixed in a hollow part and cooled to a buffer.

The smoke cooling unit 30 is located downstream of the hollow tube 60 and is a porous rod containing cellulose acetate granules. In this embodiment, the smoke cooling unit 30 is formed by heat-bonding cellulose acetate granules wrapped in a film layer and an ultra-high molecular weight polyethylene binder under certain conditions. .Ultra-high molecular weight polyethylene binder mechanically bonds granules and binder granules at various contact points at their melting temperature. Since the binder hardly flows at its melting temperature, penetrability of the gap formed between the granules was ensured, so that a plurality of passages extending along the length of the smoke cooling unit 30 were formed. The porous bar is made of cellulose acetate granules with an average diameter of 1.2 mm in which 25 wt % of GUR2105 and 75 wt % of polyethylene glycol/hydroxypropyl methyl cellulose film are packed on the surface from Ticona, LLC. The porous bar is produced by mixing GUR 2015 resin and cellulose acetate granules, and then filling (free sintering) the mold with the mixture under the condition that no pressure is applied to the heated mixture. The mold is heated to 200° C. and after 40 minutes, the porous rod is removed from the mold, cooled, and packaged with a paper plug wrap 31 having a weight of 20 g and a thickness of 0.08 mm. Cut the corresponding bar to the same length.

The smoke cooling unit contains 10 mg/mm cellulose acetate granules, the closing pressure drop is 3.0 mmH ₂ O and the porosity is 72%.

The tow 40 is a traditional cellulose acetate rod, the length is 8 mm, the outer diameter of the rod is approximately 7.12 mm, and the inner diameter is approximately 6.9 mm.

The hollow tube 60 is made of cellulose acetate. The length is 7 mm and the outer diameter of the hollow tube is approximately 7.12 mm and the inner diameter is approximately 3.5 mm.

In the aerosol-generating article shown in Figure 3, a heating element is inserted into the side of the aerosol atomization unit to heat the tobacco material in the aerosol atomization unit so that volatile compounds are released from the tobacco material. The consumer inhales at the mouth end 12 of the aerosol-generating article 10 and these volatile compounds are condensed and atomized to form an aerosol and delivered to the consumer's mouth via a jaw rod 11 .

As the aerosol is inhaled and heat exchange is performed through the smoke cooling unit 30, the temperature of the aerosol is reduced, moisture in the aerosol is blocked, and the filtration efficiency of phenol in the aerosol is improved.

The Canadian deep inhalation mode (HCI) was used to mimic smoking according to the cigarette inhalation module specified in the national standard GB/T19609-2004. The fraction is blocked using a Cambridge filter and phenol is quantitatively determined by HPLC fluorescence. The effect of the smoke cooling unit on the aerosol liquor temperature and total liquor aerosol phenol content of each oral inhalation was investigated and compared with a reference aerosol-generating product comprising a cellulose acetate tow cooling unit and a reference cigarette 3R4F, respectively (see Figure 5). ). The thermocouple temperature probe is located 5 mm away from the center of the tow 40. The test results are shown in Tables 4 and 5.

[Table 4 Mainstream Aerosol Temperature Test Results]

[Table 5 Comparative experiment on alcohol content of aerosol phenol]

Example 4

4, in a four-stage aerosol-generating article 10 having a smoke temperature cooling unit of the present invention, an aerosol atomization unit 20, a smoke cooling unit 30 and a pleated converging poly It includes four units called the lactic acid film layer sheet 70 and the tow 40. The four units use a job-bong composite molding machine and are sequentially coaxially packed using a cigarette paper 50 to create a job. Assembled in 11. The aerosol atomization unit 20 is located at the distal end 13 of the jaw rod, and the smoke cooling unit 30 is located downstream of the aerosol atomization unit, and the converging polylactic acid is corrugated. The film layer sheet 70 is located downstream of the smoke cooling unit, the tow 40 is located downstream of the corrugated converging polylactic acid film layer sheet 70, and the jaw rod 11 is located at the mouthpiece end ( 12) In the case of composite assembly by a molding machine, the bar 11 has a length of approximately 45 mm, an outer diameter of approximately 7.2 mm, and an inner diameter of approximately 6.9 mm.

The aerosol atomization unit 20 comprises tobacco material in the form of rods or pleats and is wrapped in a paper bag (not shown) to form a stick by being wound by a cigarette making device. The tobacco material comprises an additive, wherein the additive comprises glycerin and propylene glycol to form an aerosol.

The smoke cooling unit 30 is located downstream of the aerosol atomization unit and is a porous rod comprising cellulose acetate granules. The perforated rod has a length of approximately 7 mm and an outer diameter of approximately 7.2 mm and an inner diameter of approximately 6.9 mm. In this embodiment, the smoke cooling unit is formed by heat-bonding cellulose acetate granules wrapped in a film layer and an ultra-high molecular weight polyethylene binder under certain conditions. .Ultra-high molecular weight polyethylene binder mechanically bonds granules and binder granules at various contact points at their melting temperature. Since the binder hardly flows at its melting temperature, penetrability of the gap formed between the granules was ensured, so that a plurality of passages extending along the length of the smoke cooling unit 30 were formed. The porous bar is made of cellulose acetate granules with an average diameter of 1.2 mm in which 25 wt % of GUR2105 and 75 wt % of polyethylene glycol/hydroxypropyl methyl cellulose film are packed on the surface from Ticona, LLC. The porous bar is produced by mixing GUR 2015 resin and cellulose acetate granules, and then filling (free sintering) the mold with the mixture under the condition that no pressure is applied to the heated mixture. The mold is heated to 200° C. and after 40 minutes, the porous rod is removed from the mold, cooled, and packaged with a paper plug wrap 71 having a weight of 20 g and a thickness of 0.08 mm. Cut the corresponding bar to the same length.

The smoke cooling unit contains 10 mg/mm cellulose acetate granules, the length is 7 mm, the closing pressure drop is 1.2 mmH ₂ O, and the porosity is 72%.

The corrugated converging polylactic acid film layer sheet 70 has a length of about 18 mm, an outer diameter of 7.2 mm, and an inner diameter of about 6.9 mm.The thickness of the polylactic acid film layer sheet is 50 μm.

The tow 40 is a traditional cellulose acetate rod, the length is 8 mm, the outer diameter of the rod is approximately 7.12 mm, and the inner diameter is approximately 6.9 mm.

In the aerosol-generating article shown in Figure 4, a heating element is inserted into the side of the aerosol atomization unit to heat the tobacco material in the aerosol atomization unit so that volatile compounds are released from the tobacco material. The consumer inhales at the mouth end 12 of the aerosol-generating article 10 and these volatile compounds are condensed and atomized to form an aerosol and delivered to the consumer's mouth via a jaw rod 11 . The temperature of the aerosol is reduced by inhaling the aerosol and performing heat exchange through the smoke cooling unit 30 .

The Canadian deep inhalation mode (HCI) was used to mimic smoking according to the cigarette inhalation module specified in the national standard GB/T19609-2004. The effect of the smoke cooling unit on the aerosol mainstream temperature of each oral inhalation was investigated and compared to a reference aerosol-generating article comprising cellulose acetate tow. The thermocouple temperature probe is located 5 mm away from the center of the tow 40. The test results are shown in Table 6.

Sample oral-
inhale
collect 1st 2nd 3rd 4th 5th 6th 7th 8th 9th 10th 11th 12th reference sample inhale
Best
Temperature
℃ 57.5 63.2 62.8 58.5 57.9 54.8 52.5 48.9 48.6 47.8 47.4 46.5 Sample 45.7 55.3 55.2 50.9 50.5 48.8 46.5 44.2 43.9 43.7 43.5 42.7 temperature difference ℃ 11.8 7.9 7.6 7.6 7.4 6.0 6.0 4.7 4.7 4.1 3.9 3.8

[Table 6 Mainstream Aerosol Temperature Test Results]

Example 5

As shown in Figure 3, in a four-stage aerosol-generating article (10) having a smoke temperature cooling unit of the present invention, an aerosol atomization unit (20), a hollow cellulose acetate tube (60), a smoke cooling unit (30) and It includes four units called tow (40). The four units are sequentially coaxially packed using cigarette paper 50 and assembled into a job rod 11. The aerosol atomization unit 20 is located at the distal end 13 of the jaw rod and is hollow The cellulose acetate tube 60 is located downstream of the aerosol atomization unit, the smoke cooling unit 30 is located downstream of the hollow cellulose acetate tube, and the tow 40 is located downstream of the smoke cooling unit, and the jaw rod 11 ) has a mouthpiece end 12. When assembled by a cigarette machine, the jaw rod 11 has a length of approximately 45 mm, an outer diameter of approximately 7.2 mm, and an inner diameter of approximately 6.9 mm. The unit 20 comprises tobacco material in rod form or pleat form and is wrapped in a paper bag (not shown) by being wound by a cigarette making device to form a stick, wherein the tobacco material comprises an additive, wherein the additive forms an aerosol It contains glycerin and propylene glycol for the purpose of making.The hollow cellulose acetate tube 60 is located adjacent to the downstream side of the aerosol atomization unit and is made of cellulose acetate.The aerosol is first mixed in a hollow part and cooled to a buffer.

The smoke cooling unit 30 is located downstream of the hollow tube 60 and is a porous rod containing cellulose acetate granules. In this embodiment, the smoke cooling unit 30 is formed by heat-bonding cellulose acetate granules wrapped in a film layer and an ultra-high molecular weight polyethylene binder under certain conditions. .Ultra-high molecular weight polyethylene binder mechanically bonds granules and binder granules at various contact points at their melting temperature. Since the binder hardly flows at its melting temperature, penetrability of the gap formed between the granules was ensured, so that a plurality of passages extending along the length of the smoke cooling unit 30 were formed. The porous bar is made of cellulose acetate granules with an average diameter of 1.2 mm in which 25 wt % of GUR2105 and 75 wt % of polyethylene glycol/hydroxypropyl methyl cellulose film are packed on the surface from Ticona, LLC. The porous rod is produced by mixing GUR 2015 resin and cellulose acetate granules, then filling (free sintering) a mold with the mixture under the condition that no pressure is applied to the heated mixture. The mold is heated to 200° C. and after 40 minutes, the porous rod is removed from the mold, cooled, and packaged with a paper plug wrap 31 having a weight of 20 g and a thickness of 0.08 mm. Cut the corresponding bar to the same length.

The smoke cooling unit contains 8.6 mg/mm cellulose acetate granules, the closing pressure drop is 4.7 mmH ₂ O and the porosity is 73.6%

The tow 40 is a traditional cellulose acetate rod, the length is 8 mm, the outer diameter of the rod is approximately 7.12 mm, and the inner diameter is approximately 6.9 mm.

The hollow tube 60 is made of cellulose acetate. The length is 7 mm and the outer diameter of the hollow tube is approximately 7.12 mm and the inner diameter is approximately 3.5 mm.

In the aerosol-generating article shown in Figure 3, a heating element is inserted into the side of the aerosol atomization unit to heat the tobacco material in the aerosol atomization unit so that volatile compounds are released from the tobacco material. The consumer inhales at the mouth end 12 of the aerosol-generating article 10 and these volatile compounds are condensed and atomized to form an aerosol and delivered to the consumer's mouth via a jaw rod 11 .

The temperature of the aerosol is reduced by inhaling the aerosol and performing heat exchange through the smoke cooling unit 30 .

The Canadian deep inhalation mode (HCI) was used to mimic smoking according to the cigarette inhalation module specified in the national standard GB/T19609-2004. The effect of the smoke cooling unit on the aerosol mainstream temperature of each oral inhalation was investigated and compared to a reference aerosol-generating article containing cellulose acetate tow (see Figure 5). The thermocouple temperature probe is located at the mouth 5 mm away from the center of the tow 40. The test results are shown in Table 7.

Sample Oral inhalation frequency 1st 2nd 3rd 4th 5th 6th 7th 8th 9th 10th 11th 12th reference sample suction maximum temperature
℃ 57.5 63.2 62.8 58.5 57.9 54.8 52.5 48.9 48.6 47.8 47.4 46.5 Sample 49.6 58.1 57.8 54.2 53.8 52.1 49.8 48.0 47.8 47.2 46.9 46.1 temperature difference ℃ 7.9 5.1 5.0 4.3 4.1 2.7 2.7 0.9 0.8 0.6 0.5 0.47

[Table 7 Mainstream Aerosol Temperature Test Results]

As shown in Figure 5, in the prior art four-stage aerosol-generating article 10 (reference sample), an aerosol atomization unit 20, a hollow cellulose acetate tube 60, a high single denier cellulose acetate filter rod 72 and It includes four units called tow (40). The aerosol atomization unit 20 is located at the distal end 13 of the jaw rod, the hollow cellulose acetate tube 60 is located downstream of the aerosol atomization unit, and the high single denier cellulose acetate filter rod 72 is a hollow cellulose acetate tube Located downstream of 60 , the tow 40 is located downstream of the single denier cellulose acetate filter rod 72 , at the mouth end 12 of the jaw rod 11 . The four units are sequentially coaxially packed using cigarette paper (50) and assembled into a bar (11).

The description of the above embodiments is intended to enable those skilled in the art to understand and apply the present invention. Those skilled in the art will readily be able to make various modifications to these embodiments and use the generic principles described herein among other embodiments without any inventive effort. Therefore, the present invention is not limited to the embodiments described herein, and those skilled in the art based on the revelation of the present invention, all improvements and modifications without departing from the scope of the present invention should be included within the protection scope of the present invention.

Claims (27)

An aerosol-generating article comprising an aerosol atomization unit and a smoke cooling unit, wherein the smoke cooling unit is located downstream of a flow of smoke originating from the aerosol atomization unit. The aerosol-generating article of claim 1 , further comprising a filtration unit positioned downstream of the smoke flow passing through the smoke cooling unit. 3. The aerosol-generating article of claim 2, further comprising a hollow unit positioned upstream of the smoke flow passing through the smoke cooling unit. 4. The smoke cooling unit according to any one of the preceding claims, wherein the smoke cooling unit is of a structure composed of aggregation of particulate matter, the structure comprising a gap for passage of cigarette smoke and comprising at least one smoke continuous passage. Aerosol-generating article, characterized in that. 5. An aerosol-generating article according to claim 4, characterized in that the spacing of the smoke cooling unit for passage of cigarette smoke is a three-dimensional, non-linear or reticulated spacing. 5. An aerosol-generating article according to claim 4, characterized in that the smoke cooling unit is of bar type. 7. The aerosol-generating article according to claim 6, wherein the smoke cooling unit has a porosity of 40%-90%. 5. The method according to claim 4, wherein the smoke cooling unit comprises a base granule, a binder granule, and a packaging material; Forming an adhesion point between the binder granules and the binder granules, the binder granules and the basic granules, and the basic granules and the basic granules, physically bonding them at a plurality of positions, and packing the packaging material to the outside to form a porous bar An aerosol-generating article characterized. 5. An aerosol-generating article according to claim 4, characterized in that the particulate material is a particulate material capable of lowering the cigarette smoke temperature and having a low adsorption rate for an active ingredient in the cigarette smoke. The aerosol-generating article according to claim 8, wherein the base granules are active granules or inactive granules inactivated by covering the film layer. 11. The method according to claim 10, wherein in the inert granule, the thickness of the outer film layer is 0-0.2 mm, the film layer accounts for 0-50% of the total mass of the granules, and the thickness of the outer film layer is 0.001-0.2 mm, The aerosol-generating article, characterized in that the outer film layer accounts for 0.001-50% of the total mass of the granules. 11. The aerosol-generating article according to claim 10, wherein the inert granules are granules having an adsorption to nicotine in the smoke aerosol of ^{less than 3.0 mg/cm 3 .} 11. The method of claim 10, wherein the active granules include organic or inorganic granules, and the inorganic granules are aluminum oxide, zirconium oxide, calcium carbonate spheres, glass spheres, silicon dioxide, iron, copper, aluminum, gold, platinum, silicic acid magnesium spheres or calcium sulfate; The organic granules are cellulose acetate, cellulose acetate propionate, cellulose acetate butyrate, microcrystalline cellulose, sucrose powder, dextrose, lactose, powder sugar, glucose, mannitol, starch, methyl cellulose, ethyl cellulose, polylactic acid, polyethylene, poly An aerosol-generating article comprising a thermoplastic resin according to propylene, polyhydroxybutyrate, pol ε-capolactone, polyglycolic acid, polyhydroxyalkanoate, and starch. The aerosol-generating article according to claim 10 , wherein the active granules are granules having an adsorption to nicotine in the smoke aerosol of 3.0 mg/cm ^{3 or more.} 11. The method of claim 10, wherein the active granules include molecular sieves, activated carbon, diatomaceous earth, zeolite, perlite, ceramics, sepiolite, acid clay, and ion exchange resin; wherein said inert granules comprise aluminum oxide, zirconium oxide, calcium carbonate spheres, glass spheres, silicon dioxide, iron, copper, aluminum, gold, platinum, magnesium silicate spheres or calcium sulfate. 11. The aerosol-generating article of claim 10, wherein the film layer is made of a film-forming material. The method of claim 16, wherein the film-forming material is cellulose acetate, cellulose acetate propionate, cellulose acetate butyrate, hydroxy propyl cellulose, hydroxy propyl methyl cellulose, methyl cellulose, ethyl cellulose, polyvinyl pyrrolidone, polyethylene acetal di Ethyl amine acetate, styrene maleic acid copolymer, styrene vinylpyridine copolymer, cellulose phthalic acid, hydroxypropylmethylcellulose phthalate, cellulose acetate/polyethylene glycol, methyl cellulose/polyethylene glycol, carboxymethyl cellulose/polyethylene glycol, hypromellose /Polyethylene glycol, ethyl cellulose/polyethylene glycol or acrylic resin/polyethylene glycol, polylactic acid. 11. The method of claim 10, wherein the basic granular form comprises a spherical, quasi-spherical, round cake-like, flake-like, strip-like, needle-like, polymorphic, facet-shaped or random shape. Aerosol-generating articles. 11. The method of claim 10, wherein the base granules are in at least one dimension from a lower limit of 50 microns, 100 microns, 150 microns, 200 microns or 250 microns to an upper limit of 5000 microns, 2000 microns, 1000 microns, 900 microns or 700 microns. An aerosol-generating article characterized in that it has an average diameter. The method of claim 8, wherein the binder granules are polyethylene, polypropylene, polylactic acid, polyolefin, polyester, polyamide, polyacrylic acid, polyvinyl compound, polytetrafluoroethylene, polyether ether ketone, polyethylene terephthalate, polybutyl Lene terephthalate, polycyclohexylene dimethylene terephthalate, polytrimethylene terephthalate, polyacrylic acid compound, polymethyl methacrylate, acrylonitrile-butadiene-styrene, styrene-acrylonitrile, styrene- At least one selected from butadiene, styrene-maleic acid, cellulose acetate, cellulose acetate butyrat, plastic cellulose plastic, cellulose propyanate, ethyl cellulose, any one derivative thereof, or any one copolymer thereof, and combinations thereof An aerosol-generating article comprising: The aerosol-generating article according to claim 8, wherein the shape of the binder granules includes a spherical shape, a molded shape, a granular shape, a potato shape, an irregular shape, and combinations thereof. 9. The method of claim 8, wherein the binder granules have a lower limit of 5 microns, 10 microns, 50 microns, 100 microns or 150 microns in at least one dimension to an upper limit of 500 microns, 400 microns, 300 microns, 250 microns or 200 microns. An aerosol-generating article characterized in that it has an average diameter. The method according to claim 8, wherein the binder granules have a ratio of 0.1% to 99% in the porous cooling part; An aerosol-generating article, characterized in that the content of the basal granules is 1 to 99%. The aerosol-generating article according to claim 8, characterized in that the proportion of the binder granules in the porous cooling part is 15%-33%. The aerosol-generating article according to claim 8, characterized in that the content of the basal granules is 67%-85%. 9. The aerosol-generating material according to claim 8, characterized in that the packaging material is a plug wrap weighing 20-40 g and having a thickness of 0.08-0.12 mm. 27. Use of the aerosol-generating article of any one of claims 1-26 in a heated non-combustible cigarette.

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