Heat-not-burn cigarette with internal receptors

Abstract

The invention discloses a heat-not-burn cigarette with an internal sensor, comprising a tobacco segment, a smoke guide segment, a cooling segment, and a cigarette holder connected in sequence, wherein the tobacco segment is filled with tobacco shreds and a strip-shaped sensor wrapped around the tobacco shreds, the smoke guide segment is a hollow cellulose acetate tube, the cooling segment is filled with polylactic acid particles, the filter segment is filled with acetate fiber bundles, the outer layers of the tobacco segment, the smoke guide segment, the cooling segment, and the filter segment are all covered with cigarette paper, the sensor comprises a hollow cylindrical matrix and an induction layer composited on the surface of the matrix, the composite method comprises one of physical adsorption, chemical deposition, infiltration, and lamination, is suitable for disordered tobacco shreds, is heated evenly and quickly, and has a large amount of smoke.

Description

Technical Field

[0001] The invention relates to the field of heat-not-burn tobacco products, and in particular to a heat-not-burn cigarette with an internal receptor. Background Art

[0002] Heat-not-burn cigarettes are designed to reduce the types of known harmful smoke components produced by the combustion and thermal degradation of tobacco in conventional cigarettes. They are cigarettes that heat tobacco materials through electronic devices rather than burning them. There is an increasing demand for methods of generating aerosols by heating the tobacco medium in heat-not-burn cigarettes rather than by burning cigarettes, and research on heat-not-burn cigarettes and heated aerosol generating devices that match them is actively underway.

[0003] The heating methods in the prior art include: setting a heater formed by a resistor inside the cigarette contained in the aerosol generating device, and supplying power to the heater to heat the cigarette; setting a magnetic body inside the cigarette to apply a magnetic field from the outside to make it heat up, and applying a magnetic field to the cigarette by supplying power to the wires of the aerosol generating device, thereby generating aerosol.

[0004] The heater formed by the resistor and the magnetic body are collectively referred to as a receptor. The direct contact between the receptor and the tobacco raw material in the cigarette can provide an effective means for the tobacco raw material to form an inhalable aerosol. The receptor is built into the cigarette and has various shapes. For example, the Chinese patent with publication number CN201520621329.X discloses a new type of cigarette for electromagnetic heating without burning. A metal disc or ring is arranged in the middle of the cigarette body, which can achieve rapid heating. However, only a cigarette cartridge with ordered tobacco shreds can meet this type of heating method, because in order to meet the tobacco filling amount, the surplus space in the cigarette cartridge is insufficient. Filling with ordered tobacco shreds can meet both the tobacco filling amount and the accommodating space required by the built-in sheet sensor. When disordered tobacco shreds are used, the built-in sheet sensor cannot penetrate the tobacco shreds due to its shape or the front and rear surplus space in the cigarette cartridge is uneven due to the disordered filling of the tobacco shreds. For example, when the built-in sheet receptor is inserted, the disordered tobacco shreds will be concentrated and squeezed on the head of the cigarette cartridge, so that the built-in sheet receptor will be subjected to greater resistance from the disordered tobacco shreds, which is also not conducive to the continuous production of cigarette cartridges; for another example, the Chinese patent with publication number CN202021127931.5 discloses an electromagnetic heating smoking device and a matching cigarette, the electromagnetic heating smoking device includes a smoke generator, the smoke generator includes a cigarette accommodating cavity, the outer periphery of the cigarette accommodating cavity is provided with an induction coil, and the winding mode of the induction coil is gradually changed from sparse to dense; the tobacco material segment of the matching cigarette has a heat receptor, and the heat receptor is a granular magnetic heating material. The heat receptor and the tobacco material segment are mixed together to form a tobacco segment, but the heat receptor filled in this scheme is metal magnetic particles. Since the particles are small, the heating area generated is small, the heating is uneven, and the tobacco material cannot be fully heated, which is not conducive to the generation of sufficient aerosol. Summary of the invention

[0005] In order to solve the above problems, the present invention provides a heat-not-burn cigarette with an internal sensor, which is suitable for disordered tobacco shreds, is heated evenly and quickly, and produces a large amount of smoke.

[0006] The technical solution of the present invention is a heat-not-burn cigarette with an internal sensor, comprising a tobacco segment, a smoke guide segment, a cooling segment, and a cigarette holder connected in sequence, the tobacco segment is filled with tobacco shreds and a strip-shaped sensor wrapped in the tobacco shreds, the smoke guide segment is a hollow cellulose acetate tube, the cooling segment is filled with polylactic acid particles, the filter segment is filled with acetate fiber tow, the outer layers of the tobacco segment, the smoke guide segment, the cooling segment, and the filter segment are all covered with cigarette paper, the sensor comprises a hollow cylindrical matrix and a sensing layer composited on the surface of the matrix, the composite method comprises one of physical adsorption, chemical deposition, infiltration, and lamination, the tobacco shreds can be ordered tobacco shreds or disordered tobacco shreds, the mass of the sensing layer accounts for 5% to 90% of the matrix, and the aspect ratio of the sensor is not less than 25.

[0007] The overall idea of ​​this solution is to heat the tobacco segment through the built-in sensor to heat the tobacco shreds mixed with it, thereby generating an aerosol. The aerosol is a suspension of solid particles or liquid droplets in a gas such as air, which is what people in this field call "smoke". During smoking, the volatile compounds of the tobacco shreds are released from the aerosol-forming matrix through heat transfer from the heat source, and are entrained in the air through inhalation, and are transported to the cooling section through the smoke guide section, thereby cooling. The user inhales the condensed aerosol compounds, namely, smoke, through the inhalation of the filter section. In this solution, the sensor is in the shape of a strip, including a hollow cylindrical substrate and a sensing layer composited on the surface of the substrate. In the prior art, the built-in sheet sensor needs to use a tobacco bomb with ordered tobacco shreds to meet this type of heating method. When using a disordered tobacco shreds, the aerosol compound, i.e., smoke, is inhaled. The sheet-type sensor built into the shreds will encounter greater resistance from the disordered shreds, which is not conducive to the continuous production of cigarette bombs. The present solution can be applicable to disordered shreds, and the cigarette production efficiency is high. When the built-in granular sensor in the prior art is inductively heated, the particles are small, so the heating area is small, the tobacco material cannot be fully heated, which is not conducive to the generation of sufficient aerosol. The heating area of ​​the present solution is large, and the distribution is more orderly, and the heating is uniform and sufficient. In addition, the sensor of the present solution includes a hollow cylindrical substrate, so that the induction layer can be compounded on the inner surface of the hollow cylindrical substrate, and can also be compounded on the outer surface of the hollow cylindrical substrate. The types and areas of the composite materials are increased, so that the prepared cigarettes can be adapted to both resistive heaters and electromagnetic heaters, and have a wider range of uses.

[0008] Preferably, the sensor further includes an adhesive layer for bonding the substrate and the sensing layer. Due to the different selection of the substrate material and the sensing material, there is a possibility that the thermal expansion coefficients of the two materials are different, resulting in poor bonding between the two materials, and the sensing material may fall off easily at high temperatures. Therefore, an adhesive layer may be coated between the sensing material and the substrate material to strengthen the bonding between the two.

[0009] Preferably, the sensor further includes a heat-uniform layer coated on the outer surface of the sensing layer. Due to different processes for attaching the sensing material to the substrate, the sensing material may be unevenly attached to the substrate surface, thereby causing uneven heating. Therefore, it is necessary to attach a layer of heat-uniform material to the outer wall of the sensing material.

[0010] Preferably, the inner surface of the substrate or the outer surface of the substrate is compounded with an induction layer, and the material of the induction layer includes one or more of electromagnetic induction materials and infrared induction materials. The material of the induction layer includes one or more of electromagnetic induction materials and infrared induction materials. The infrared induction material includes one or more of oxides, nitrides, borides, and carbides of titanium-zirconium, iron, nickel-cobalt, and rare earth series. The electromagnetic induction material includes ferrite, ferromagnetic steel, or stainless steel, so that the sensor can be used in both electromagnetic heating cigarette products and infrared heating cigarette products.

[0011] Preferably, the inner surface of the substrate and the outer surface of the substrate are both compounded with an induction layer, the material of the induction layer includes one or more of electromagnetic induction materials and infrared induction materials, the material of the induction layer includes one or more of electromagnetic induction materials and infrared induction materials, the infrared induction materials include one or more of oxides, nitrides, borides, and carbides of titanium zirconium series, iron series, nickel cobalt series, and rare earth series, the electromagnetic induction materials include ferrite, ferromagnetic steel, or stainless steel, so that the sensor can be applied to both electromagnetic heating cigarette products and infrared heating cigarette products. Preferably, the number of the sensor is at least 1, distributed as needed, to ensure that the heating temperature is more uniform and to meet different temperature requirements.

[0012] Preferably, the length of the sensor is less than or equal to the length of the tobacco segment, and the diameter of the sensor is (1 / 10)-(1 / 20) of the diameter of the heat-not-burn cigarette. The sensor is in the shape of an elongated strip or line and can be used in aerosol-generating products of disordered tobacco shreds, overcoming the disadvantage that existing built-in sheet-like sensors can only be filled with ordered tobacco shreds, otherwise the sensor will be subject to greater resistance from the disordered tobacco shreds. This solution is conducive to the continuous generation of cigarettes.

[0013] Preferably, the material of the substrate includes one or more of high-temperature linear materials, ceramic materials, and metal materials. The ceramic material may be a porous ceramic material, including one or more of alumina ceramics, silicon carbide ceramics, and silicon nitride ceramics. The metal material is a foam metal, including a foam material with a skeleton of metals and alloys such as Cu, Ni, NiCrFe, ZnCu, NiCu, NiCrW, and NiFe. The material of the sensing layer includes one or more of electromagnetic induction materials and infrared materials.

[0014] Preferably, the material of the heat-leveling layer includes one or more of graphite sheets, silicone esters, silica gel, thermally conductive gaskets, thermally conductive foams, thermally conductive tapes, and thermally conductive metals, and the composite method of the heat-leveling layer and the sensing material can be one of physical adsorption, chemical deposition, infiltration, and lamination.

[0015] Preferably, the material of the bonding layer includes the following components in mass fractions: 30-40 parts of sodium silicate solution, 50-60 parts of ceramic powder, 1-3 parts of composite metal oxide powder, 1-3 parts of phosphate powder, and 0.1-0.3 parts of boric acid powder, wherein the ceramic powder includes one or more of quartz sand, fused quartz, petalite, and mullite, and the composite metal oxide powder includes one or more of lead oxide, tin oxide, indium oxide, and bismuth oxide. Due to the different selection of the base material and the sensing material, there will be a difference in the thermal expansion coefficients of the two materials, resulting in poor bonding between the two materials, and the sensing material is easy to fall off at high temperatures. Yes, in this scheme, the components of the adhesive layer make the adhesive layer have the characteristics of low expansion coefficient and high temperature resistance, which is suitable for the heat-not-burn cigarettes of this scheme. The specific principle is as follows: using sodium silicate solution as the base glue, adjusting the linear expansion coefficient of the adhesive layer by adding ceramic powder with high temperature resistance and low expansion rate, adding composite metal oxide powder so that the adhesive layer can start pre-sintering of ceramics at a low temperature, thereby increasing the low-temperature bonding strength of the adhesive layer, adding phosphate powder to increase the water resistance of the adhesive layer, adding boric acid powder to accelerate the curing of the adhesive layer, and the synergistic effect of several raw materials makes the adhesive layer have the characteristics of low expansion coefficient and high temperature resistance.

[0016] The beneficial effects of the present invention are:

[0017] 1. The built-in sensor of this solution can be adapted to disordered shredded tobacco, with low filling resistance, which is conducive to the continuous production of heat-not-burn cigarettes;

[0018] 2. The built-in sensor of this solution has a large heating area, which can fully heat the tobacco and produce a large amount of smoke;

[0019] 3. The sensor of this solution includes a hollow cylindrical substrate, so that the sensing layer can be compounded on the inner surface of the hollow cylindrical substrate, or on the outer surface of the hollow cylindrical substrate. The types and areas of the compounded materials are increased, so that the prepared cigarette can be adapted to both resistive heaters and electromagnetic heaters, and has a wider range of uses;

[0020] 4. The bonding layer of the present scheme prevents the base material and the sensing material from falling off due to the different thermal expansion coefficients. The components of the bonding layer make the bonding layer have the characteristics of low expansion coefficient and high temperature resistance. Sodium silicate solution is used as the base glue, and the linear expansion coefficient of the bonding layer is adjusted by adding ceramic powder with high temperature resistance and low expansion rate. The addition of composite metal oxide powder allows the bonding layer to start pre-sintering of ceramics at a low temperature, thereby increasing the low-temperature bonding strength of the bonding layer. The addition of phosphate powder increases the water resistance of the bonding layer, and the addition of boric acid powder accelerates the curing of the bonding layer. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] Figure 1A schematic diagram of the structure of a heat-not-burn cigarette with an internal sensor in this solution;

[0022] Figure 2 is a schematic diagram of the structure of the tobacco segment in Example 1;

[0023] Figure 3 is a schematic diagram of the structure of the tobacco segment in Example 2;

[0024] Figure 4 These are the test results of the preheating time and smoke volume of the heat-not-burn cigarettes prepared in Examples 1-5 and Comparative Examples 1-2.

[0025] In the figure: 1. tobacco section; 2. smoke diversion section; 3. cooling section; 4. mouthpiece; 5. receptor; 6. substrate; 7. adhesive layer; 8. uniform heating layer; 9. induction layer. DETAILED DESCRIPTION

[0026] The present invention is further described in detail below in conjunction with embodiments.

[0027] Those skilled in the art will appreciate that the following examples are only used to illustrate the present invention and should not be considered to limit the scope of the present invention. If no specific techniques or conditions are specified in the examples, they are carried out according to the techniques or conditions described in the literature in this area or according to the product instructions. If the manufacturer of the reagents or instruments used is not specified, they are all conventional products that can be purchased.

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

[0029] Example 1

[0030] like Figure 1 As shown, a heat-not-burn cigarette with an internal receptor 5 comprises a tobacco segment 1, a smoke guide segment 2, a cooling segment 3, and a cigarette holder 4 connected in sequence, wherein the tobacco segment 1 is filled with tobacco shreds and a strip-shaped receptor 5 wrapped around the tobacco shreds, the smoke guide segment 2 is a hollow cellulose acetate tube, the cooling segment 3 is filled with polylactic acid particles, the filter segment is filled with cellulose acetate tow, and the outer layers of the tobacco segment 1, the smoke guide segment 2, the cooling segment 3, and the filter segment are all covered with cigarette paper, as shown in FIG. Figure 2As shown, the receptor 5 includes a hollow cylindrical substrate 6 and a sensing layer 9 compounded on the surface of the substrate 6, the compounding method includes one of physical adsorption, chemical deposition, infiltration, and lamination, the tobacco shreds can be ordered tobacco shreds or disordered tobacco shreds, the mass of the sensing layer 9 accounts for 5% to 90% of the substrate 6, and the aspect ratio of the receptor 5 is not less than 25.

[0031] The number of the receptor 5 is one, which ensures that the heating temperature is more uniform and meets different temperature requirements.

[0032] The length of the receptor 5 is less than or equal to the length of the tobacco segment 1, and the diameter of the receptor 5 is (1 / 10)-(1 / 20) of the diameter of the heat-not-burn cigarette. The receptor 5 is in the shape of an elongated strip or line, and can be applied to aerosol-generating products of disordered tobacco shreds. This overcomes the disadvantage that the existing built-in sheet receptor 5 can only be filled with ordered tobacco shreds, otherwise the receptor 5 will be subject to greater resistance from the disordered tobacco shreds. This solution is conducive to the continuous generation of cigarettes.

[0033] The material of the substrate 6 includes a ceramic material, and the ceramic material may be a porous ceramic material, including one or more of alumina ceramics, silicon carbide ceramics, and silicon nitride ceramics.

[0034] The outer surface of the substrate 6 is compounded with an induction layer 9, and the induction material is an electromagnetic induction material, which is compounded on the outer surface of the substrate 6 by adsorption. The prepared heat-not-burn cigarette is suitable for an electromagnetic heater, and the electromagnetic induction material includes ferrite, ferromagnetic steel or stainless steel.

[0035] The receptor 5 also includes a heat-uniform layer 8 coated on the outer surface of the sensing layer 9. Due to different processes for attaching the sensing material to the substrate 6, the sensing material may be unevenly attached to the surface of the substrate 6, resulting in uneven heating. Therefore, a layer of heat-uniform material is attached to the outer wall of the sensing material.

[0036] The heat-leveling layer 8 includes one or more of graphite sheets, silicone esters, silica gel, thermally conductive pads, thermally conductive foams, thermally conductive tapes, and thermally conductive metals. The heat-leveling layer 8 may be composited with the sensing material in a manner of physical adsorption, chemical deposition, infiltration, and lamination.

[0037] The sensor 5 also includes an adhesive layer 7 for bonding the substrate 6 and the sensing layer 9. Due to the different selection of substrate 6 material and sensing material, there is a difference in thermal expansion coefficients between the two materials, which leads to poor bonding between the two materials. The sensing material may fall off easily at high temperatures. Therefore, an adhesive layer 7 may be coated between the sensing material and the substrate 6 material to strengthen the bonding between the two.

[0038] The bonding layer 7 includes the following components in parts by mass: 30-40 parts of sodium silicate solution, 50-60 parts of ceramic powder, 1-3 parts of composite metal oxide powder, 1-3 parts of phosphate powder, and 0.1-0.3 parts of boric acid powder, wherein the ceramic powder includes one or more of quartz sand, fused quartz, petalite, and mullite, and the composite metal oxide powder includes one or more of lead oxide, tin oxide, indium oxide, and bismuth oxide. The bonding layer 7 is prepared as follows: 30-40 parts of sodium silicate solution, 50-60 parts of ceramic powder, 1-3 parts of composite metal oxide powder, 1-3 parts of phosphate powder, and 0.1-0.3 parts of boric acid powder are mixed, left to stand for 3-5 minutes to remove bubbles, applied to the surface of the specimen to be bonded, and left to cure at room temperature for 2 days.

[0039] Example 2

[0040] like Figure 3 As shown, a heat-not-burn cigarette with an internal receptor 5 comprises a tobacco segment 1, a smoke guide segment 2, a cooling segment 3, and a cigarette holder 4 connected in sequence, the tobacco segment 1 is filled with shredded tobacco and a strip-shaped receptor 5 wrapped in the shredded tobacco, the smoke guide segment 2 is a hollow cellulose acetate tube, the cooling segment 3 is filled with polylactic acid particles, the filter segment is filled with cellulose acetate tow, the outer layers of the tobacco segment 1, the smoke guide segment 2, the cooling segment 3, and the filter segment are all covered with cigarette paper, the receptor 5 comprises a hollow cylindrical substrate 6 and a sensing layer 9 composited on the surface of the substrate 6, the composite method comprises one of physical adsorption, chemical deposition, infiltration, and lamination, the shredded tobacco can be ordered shredded tobacco or disordered shredded tobacco, the mass of the sensing layer 9 accounts for 5% to 90% of the substrate 6, and the aspect ratio of the receptor 5 is not less than 25.

[0041] The number of the receptors 5 is 3, which are distributed in parallel to ensure that the heating temperature is more uniform and meet different temperature requirements.

[0042] The length of the receptor 5 is less than or equal to the length of the tobacco segment 1, and the diameter of the receptor 5 is (1 / 10)-(1 / 20) of the diameter of the heat-not-burn cigarette. The receptor 5 is in the shape of an elongated strip or line, and can be applied to aerosol-generating products of disordered tobacco shreds. This overcomes the disadvantage that the existing built-in sheet receptor 5 can only be filled with ordered tobacco shreds, otherwise the receptor 5 will be subject to greater resistance from the disordered tobacco shreds. This solution is conducive to the continuous generation of cigarettes.

[0043] The material of the substrate 6 includes a metal material, and the metal material is a foam metal, including a foam material with a skeleton of metals and alloys such as Cu, Ni, NiCrFe, ZnCu, NiCu, NiCrW, and NiFe.

[0044] The inner surface of the substrate 6 is compounded with a sensing layer 9, and the material of the sensing layer 9 is an infrared sensing material. The infrared sensing material is coated on the inner surface of the substrate 6 by coating. The infrared sensing material includes one or more oxides, nitrides, borides, and carbides of titanium-zirconium, iron, nickel-cobalt, and rare earth series. The prepared heat-not-burn cigarette is suitable for a resistive heater.

[0045] The receptor 5 also includes a heat-uniform layer 8 coated on the outer surface of the sensing layer 9. Due to different processes for attaching the sensing material to the substrate 6, the sensing material may be unevenly attached to the surface of the substrate 6, resulting in uneven heating. Therefore, a layer of heat-uniform material is attached to the outer wall of the sensing material.

[0046] The heat-leveling layer 8 includes one or more of graphite sheets, silicone esters, silica gel, thermally conductive pads, thermally conductive foams, thermally conductive tapes, and thermally conductive metals. The heat-leveling layer 8 may be composited with the sensing material in a manner of physical adsorption, chemical deposition, infiltration, and lamination.

[0047] Example 3

[0048] A heat-not-burn cigarette with an internal receptor 5 comprises a tobacco segment 1, a smoke guide segment 2, a cooling segment 3, and a cigarette holder 4 connected in sequence, wherein the tobacco segment 1 is filled with tobacco shreds and a strip-shaped receptor 5 wrapped around the tobacco shreds, the smoke guide segment 2 is a hollow cellulose acetate tube, the cooling segment 3 is filled with polylactic acid particles, the filter segment is filled with acetate fiber tow, the outer layers of the tobacco segment 1, the smoke guide segment 2, the cooling segment 3, and the filter segment are all covered with cigarette paper, the receptor 5 comprises a hollow cylindrical substrate 6 and a sensing layer 9 composited on the surface of the substrate 6, the composite method comprises one of physical adsorption, chemical deposition, infiltration, and lamination, the tobacco shreds may be ordered or disordered, the mass of the sensing layer 9 accounts for 5% to 90% of the substrate 6, and the aspect ratio of the receptor 5 is not less than 25.

[0049] The number of the receptors 5 is at least one, which is distributed as needed to ensure that the heating temperature is more uniform and meets different temperature requirements.

[0050] The length of the receptor 5 is less than or equal to the length of the tobacco segment 1, and the diameter of the receptor 5 is (1 / 10)-(1 / 20) of the diameter of the heat-not-burn cigarette. The receptor 5 is in the shape of an elongated strip or line, and can be applied to aerosol-generating products of disordered tobacco shreds. This overcomes the disadvantage that the existing built-in sheet receptor 5 can only be filled with ordered tobacco shreds, otherwise the receptor 5 will be subject to greater resistance from the disordered tobacco shreds. This solution is conducive to the continuous generation of cigarettes.

[0051] The material of the substrate 6 includes a ceramic material, and the ceramic material may be a porous ceramic material, including one or more of alumina ceramics, silicon carbide ceramics, and silicon nitride ceramics.

[0052] The inner surface of the substrate 6 and the outer surface of the substrate 6 are both compounded with a sensing layer 9, and the material of the sensing layer 9 includes electromagnetic induction material and infrared induction material. The electromagnetic induction material is adsorbed on the outer surface of the substrate 6 by adsorption, and the infrared induction material is coated on the inner surface of the substrate 6 by coating. The prepared heat-not-burn cigarette is suitable for electromagnetic heaters and infrared heaters. The electromagnetic induction material includes ferrite, ferromagnetic steel or stainless steel, and the infrared induction material includes one or more oxides, nitrides, borides, and carbides of titanium-zirconium series, iron series, nickel-cobalt series, and rare earth series, so that the sensor 5 can be used in both electromagnetic heaters and infrared heaters.

[0053] The sensor 5 also includes an adhesive layer 7 for bonding the substrate 6 and the sensing layer 9. Due to the different selection of substrate 6 material and sensing material, there is a difference in thermal expansion coefficients between the two materials, which leads to poor bonding between the two materials. The sensing material may fall off easily at high temperatures. Therefore, an adhesive layer 7 may be coated between the sensing material and the substrate 6 material to strengthen the bonding between the two.

[0054] The bonding layer 7 includes the following components in parts by mass: 30-40 parts of sodium silicate solution, 50-60 parts of ceramic powder, 1-3 parts of composite metal oxide powder, 1-3 parts of phosphate powder, and 0.1-0.3 parts of boric acid powder, wherein the ceramic powder includes one or more of quartz sand, fused quartz, petalite, and mullite, and the composite metal oxide powder includes one or more of lead oxide, tin oxide, indium oxide, and bismuth oxide. The bonding layer 7 is prepared as follows: 30-40 parts of sodium silicate solution, 50-60 parts of ceramic powder, 1-3 parts of composite metal oxide powder, 1-3 parts of phosphate powder, and 0.1-0.3 parts of boric acid powder are mixed, left to stand for 3-5 minutes to remove bubbles, applied to the surface of the specimen to be bonded, and left to cure at room temperature for 2 days.

[0055] Example 4

[0056] A heat-not-burn cigarette with an internal receptor 5 comprises a tobacco segment 1, a smoke guide segment 2, a cooling segment 3, and a cigarette holder 4 connected in sequence, wherein the tobacco segment 1 is filled with tobacco shreds and a strip-shaped receptor 5 wrapped around the tobacco shreds, the smoke guide segment 2 is a hollow cellulose acetate tube, the cooling segment 3 is filled with polylactic acid particles, the filter segment is filled with acetate fiber tow, the outer layers of the tobacco segment 1, the smoke guide segment 2, the cooling segment 3, and the filter segment are all covered with cigarette paper, the receptor 5 comprises a hollow cylindrical substrate 6 and a sensing layer 9 composited on the surface of the substrate 6, the composite method comprises one of physical adsorption, chemical deposition, infiltration, and lamination, the tobacco shreds may be ordered or disordered, the mass of the sensing layer 9 accounts for 5% to 90% of the substrate 6, and the aspect ratio of the receptor 5 is not less than 25.

[0057] The number of the receptors 5 is at least one, which is distributed as needed to ensure that the heating temperature is more uniform and meets different temperature requirements.

[0058] The length of the receptor 5 is less than or equal to the length of the tobacco segment 1, and the diameter of the receptor 5 is (1 / 10)-(1 / 20) of the diameter of the heat-not-burn cigarette. The receptor 5 is in the shape of an elongated strip or line, and can be applied to aerosol-generating products of disordered tobacco shreds. This overcomes the disadvantage that the existing built-in sheet receptor 5 can only be filled with ordered tobacco shreds, otherwise the receptor 5 will be subject to greater resistance from the disordered tobacco shreds. This solution is conducive to the continuous generation of cigarettes.

[0059] The material of the substrate 6 includes a ceramic material, and the ceramic material may be a porous ceramic material, including one or more of alumina ceramics, silicon carbide ceramics, and silicon nitride ceramics.

[0060] The inner surface of the substrate 6 and the outer surface of the substrate 6 are both compounded with an induction layer 9, and the material of the induction layer 9 includes electromagnetic induction material and infrared induction material. The electromagnetic induction material is adsorbed on the outer surface of the substrate 6 by adsorption, and the infrared induction material is coated on the inner surface of the substrate 6 by coating. The prepared heat-not-burn cigarette is suitable for electromagnetic heaters and infrared heaters. The electromagnetic induction material includes ferrite, ferromagnetic steel or stainless steel, and the infrared induction material includes one or more oxides, nitrides, borides, and carbides of titanium-zirconium series, iron series, nickel-cobalt series, and rare earth series, so that the sensor 5 can be used for both electromagnetic heaters and infrared heaters.

[0061] Example 5

[0062] A heat-not-burn cigarette with an internal receptor 5 comprises a tobacco segment 1, a smoke guide segment 2, a cooling segment 3, and a cigarette holder 4 connected in sequence, wherein the tobacco segment 1 is filled with tobacco shreds and a strip-shaped receptor 5 wrapped around the tobacco shreds, the smoke guide segment 2 is a hollow cellulose acetate tube, the cooling segment 3 is filled with polylactic acid particles, the filter segment is filled with cellulose acetate tow, and the outer layers of the tobacco segment 1, the smoke guide segment 2, the cooling segment 3, and the filter segment are all covered with cigarette paper, such as Figure 2 As shown, the receptor 5 includes a hollow cylindrical substrate 6 and a sensing layer 9 compounded on the surface of the substrate 6, the compounding method includes one of physical adsorption, chemical deposition, infiltration, and lamination, the tobacco shreds can be ordered tobacco shreds or disordered tobacco shreds, the mass of the sensing layer 9 accounts for 5% to 90% of the substrate 6, and the aspect ratio of the receptor 5 is not less than 25.

[0063] The number of the receptor 5 is one, which ensures that the heating temperature is more uniform and meets different temperature requirements.

[0064] The length of the receptor 5 is less than or equal to the length of the tobacco segment 1, and the diameter of the receptor 5 is (1 / 10)-(1 / 20) of the diameter of the heat-not-burn cigarette. The receptor 5 is in the shape of an elongated strip or line, and can be applied to aerosol-generating products of disordered tobacco shreds. This overcomes the disadvantage that the existing built-in sheet receptor 5 can only be filled with ordered tobacco shreds, otherwise the receptor 5 will be subject to greater resistance from the disordered tobacco shreds. This solution is conducive to the continuous generation of cigarettes.

[0065] The material of the substrate 6 includes a ceramic material, and the ceramic material may be a porous ceramic material, including one or more of alumina ceramics, silicon carbide ceramics, and silicon nitride ceramics.

[0066] The inner surface of the substrate 6 and the outer surface 6 of the substrate are both compounded with an induction layer 9, and the material of the induction layer 9 includes electromagnetic induction material and infrared induction material. The electromagnetic induction material is adsorbed on the outer surface of the substrate 6 by adsorption, and the infrared induction material is coated on the inner surface of the substrate 6 by coating. The prepared heat-not-burn cigarette is suitable for electromagnetic heaters and infrared heaters. The electromagnetic induction material includes ferrite, ferromagnetic steel or stainless steel, and the infrared induction material includes one or more oxides, nitrides, borides, and carbides of titanium-zirconium series, iron series, nickel-cobalt series, and rare earth series, so that the sensor 5 can be used for both electromagnetic heaters and infrared heaters.

[0067] The receptor 5 also includes a heat-uniform layer 8 coated on the outer surface of the sensing layer 9. Due to different processes for attaching the sensing material to the substrate 6, the sensing material may be unevenly attached to the surface of the substrate 6, resulting in uneven heating. Therefore, a layer of heat-uniform material is attached to the outer wall of the sensing material.

[0068] The heat-leveling layer 8 includes one or more of graphite sheets, silicone esters, silica gel, thermally conductive pads, thermally conductive foams, thermally conductive tapes, and thermally conductive metals. The heat-leveling layer 8 may be composited with the sensing material in a manner of physical adsorption, chemical deposition, infiltration, and lamination.

[0069] The sensor 5 also includes an adhesive layer 7 for bonding the substrate 6 and the sensing layer 9. Due to the different selection of substrate 6 material and sensing material, there is a difference in thermal expansion coefficients between the two materials, which leads to poor bonding between the two materials. The sensing material may fall off easily at high temperatures. Therefore, an adhesive layer 7 may be coated between the sensing material and the substrate 6 material to strengthen the bonding between the two.

[0070] The bonding layer 7 includes the following components in parts by mass: 30-40 parts of sodium silicate solution, 50-60 parts of ceramic powder, 1-3 parts of composite metal oxide powder, 1-3 parts of phosphate powder, and 0.1-0.3 parts of boric acid powder, wherein the ceramic powder includes one or more of quartz sand, fused quartz, petalite, and mullite, and the composite metal oxide powder includes one or more of lead oxide, tin oxide, indium oxide, and bismuth oxide. The bonding layer 7 is prepared as follows: 30-40 parts of sodium silicate solution, 50-60 parts of ceramic powder, 1-3 parts of composite metal oxide powder, 1-3 parts of phosphate powder, and 0.1-0.3 parts of boric acid powder are mixed, left to stand for 3-5 minutes to remove bubbles, applied to the surface of the specimen to be bonded, and left to cure at room temperature for 2 days.

[0071] Comparative Example 1

[0072] A heat-not-burn cigarette with an internal receptor 5 comprises a tobacco segment 1, a smoke guide segment 2, a cooling segment 3, and a cigarette holder 4 connected in sequence, wherein the tobacco segment 1 is filled with tobacco shreds and a receptor 5 wrapped around the tobacco shreds, the smoke guide segment 2 is a hollow cellulose acetate tube, the cooling segment 3 is filled with polylactic acid particles, the filter segment is filled with cellulose acetate tow, the outer layers of the tobacco segment 1, the smoke guide segment 2, the cooling segment 3, and the filter segment are all covered with cigarette paper, and the receptor 5 is a sheet-shaped magnetic receptor 5, such as a magnetic iron sheet or a magnetic iron ring.

[0073] Comparative Example 2

[0074] A heat-not-burn cigarette with an internal receptor 5 comprises a tobacco segment 1, a smoke guide segment 2, a cooling segment 3, and a cigarette holder 4 connected in sequence, wherein the tobacco segment 1 is filled with tobacco shreds and a receptor 5 wrapped around the tobacco shreds, the smoke guide segment 2 is a hollow cellulose acetate tube, the cooling segment 3 is filled with polylactic acid particles, the filter segment is filled with cellulose acetate tow, the outer layers of the tobacco segment 1, the smoke guide segment 2, the cooling segment 3, and the filter segment are all covered with cigarette paper, and the receptor 5 is a granular Fe 3 O4 Metallic magnetic particles.

[0075] Test Data

[0076] The heat-not-burn cigarettes prepared in Examples 1-5 and Comparative Examples 1-2 were heated in an electromagnetic heater or a resistive heater, the bottom coil was turned on, the surrounding coils were turned off, a voltage of 3.7 V was applied, and the time required for the same position of the cigarette to be heated to 350° C. was detected to test the preheating time; the heat-not-burn cigarettes prepared in Examples 1-5 and Comparative Examples 1-2 were heated in an electromagnetic heater or a resistive heater, and the smoke volume was observed. The results are as follows: Figure 4 .

[0077] The above is only a specific embodiment of the present invention, but the protection scope of the present invention is not limited thereto. Any changes or substitutions that can be easily thought of by a person skilled in the art within the technical scope disclosed by the present invention should be included in the protection scope of the present invention. Therefore, the protection scope of the present invention should be based on the protection scope of the claims.

Claims

1. A heat-not-burn cigarette with an internal receptor, characterized in that: It comprises a tobacco segment (1), a smoke guide segment (2), a cooling segment (3), and a cigarette holder (4) which are connected in sequence. The tobacco segment (1) is filled with tobacco shreds and a strip-shaped receptor (5) wrapped around the tobacco shreds. The receptor (5) comprises a hollow cylindrical base (6) and a sensing layer (9) compounded on the surface of the base (6). The sensor (5) further comprises an adhesive layer (7) for bonding the substrate (6) and the sensing layer (9); The receptor (5) further comprises a heat-uniform layer (8) coated on the outer surface of the sensing layer (9); The material of the bonding layer (7) comprises the following components in parts by mass: 30-40 parts of sodium silicate solution, 50-60 parts of ceramic powder, 1-3 parts of composite metal oxide powder, 1-3 parts of phosphate powder, and 0.1-0.3 parts of boric acid powder; The material of the substrate (6) includes one or more of a ceramic material and a metal material, and the material of the induction layer (9) includes one or more of an electromagnetic induction material and an infrared material; The material of the heat-uniform layer (8) includes one or more of graphite sheets, silicone esters, silica gel, thermally conductive pads, thermally conductive foams, thermally conductive tapes, and thermally conductive metals.

2. A heat-not-burn cigarette with an internal receptor according to claim 1, characterized in that: The inner surface of the substrate (6) or the outer surface of the substrate (6) is composited with a sensing layer (9).

3. The heat-not-burn cigarette with an internal receptor according to claim 1, characterized in that: The inner surface of the substrate (6) and the outer surface of the substrate (6) are both composited with a sensing layer (9).

4. The heat-not-burn cigarette with an internal receptor according to claim 1, characterized in that: The number of the receptor (5) is at least one.

5. The heat-not-burn cigarette with an internal receptor according to claim 1, characterized in that: The length of the sensor (5) is less than or equal to the length of the tobacco segment (1).

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