Dual-structure heated cartridge

Abstract

This heated cartridge has a dual structure. The cartridge is formed by sequentially joining a smoke-generating section (1) and a smoke-restricting section (2), wrapping them in an outer wrapper (3), and twisting them. During smoking, the smoke-generating section (1) comes into contact with the heating element of the heater to release smoke, which then flows through the smoke-restricting section (2). The smoke-restricting section (2) reduces the smoke temperature and guides the smoke, allowing cooled, high-concentration smoke to be delivered to the consumer's mouth, resulting in advantages such as high smoke yield and low smoke temperature. The heated cartridge has a simple structure, is easy to industrialize, and has good prospects for industrial application.

Description

[Technical Field]

[0001] This application claims priority to Chinese Patent Application No. 2020111851050, filed on October 30, 2020, and Chinese Patent Application No. 202110121860.0, filed on January 28, 2021.

[0002] The present invention relates to the technical field of tobacco processing, and more particularly to a heating cartridge having a dual structure. [Background technology]

[0003] Heated tobacco products are a new type of product developed in recent years. Due to the use of an external heat source to heat and burn tobacco and release smoke, the amount of harmful substances released from the product is significantly reduced, significantly improving product safety compared to traditional smoked tobacco. Heated tobacco products have characteristics and advantages such as a rich flavor, no sidestream smoke, and no soot pollution, and have been well accepted in the market and have received positive feedback. Currently, annual sales of products such as iQOS (manufactured by Philip Morris International), Glo (manufactured by British American Tobacco), Ploom (manufactured by Japan Tobacco), and Lil (manufactured by Korean Tobacco) exceed 200 million packs per year, accounting for more than 3% of the overseas tobacco market.

[0004] However, due to the technical solution of releasing smoke through heating and baking, these products have the drawbacks of insufficient smoke density and high smoke temperature, which limits the selection of these heated products by more consumers. Heat-not-burn products typically employ multi-layered composite filter rods to regulate and control smoke density and temperature, but technical issues with the selection of related materials and structural design prevent the problem from being effectively resolved. Currently, for typical heated products, the total smoke particle phase per cigarette is 18 mg or less, and the smoke temperature and the surface temperature of the filter tip exceed 45°C. At the same time, the complex filter rod structure makes manufacturing difficult and expensive.

[0005] For example, U.S. Patent Application Publication No. 20140305448, entitled "Aerosol-generating article for use with an aerosol-generating device," discloses a heated cartridge having a four-part structure, which includes a smoke-generating section, a support section, a cooling section, and a filtering section. The manufacturing process is complicated, and the cooling section may melt during the inhalation process, thus affecting the smoking experience. The product has drawbacks such as low smoke volume and high smoke temperature.

[0006] In Chinese Patent Application Publication No. 110680018, entitled "A support for an incense core and an incense core having the same structure," one embodiment discloses a triple-layered heated cartridge structure, which is composed of a smoke-forming section, a high-temperature-resistant flue section, and a filter section. The manufacturing process of the smoke cartridge is simplified, and the temperature of the smoke is reduced to a certain extent, but the smoke volume of the filter section is reduced, and the pain point of high smoke density is not resolved.

[0007] Chinese Utility Model No. 211153800, entitled "A heat-not-burn cigarette and a smoking article," discloses a heated tobacco product and a smoking article. The heated tobacco product comprises a matrix section, a smoke collection section, a circulation element, and an outer packaging element. The matrix section includes a smoke-forming section and a smoke-passing section. When smoke passes through the smoke-passing section, some of the aroma and smoke are absorbed, thereby affecting aroma release and reducing smoke density. The smoke collection section is composed of one or more of an acetate fiber tube, a polylactic acid tube, and a paper tube. In practice, the cooling effect of the selected material for the smoke collection section is unclear. As can be seen from the detection data of an embodiment of the present invention, the discrepancy between smoke volume and smoke density cannot be specifically resolved.

[0008] Chinese Utility Model No. 210581038, entitled "Composite smoke circulation rod, smoke circulation product, and smoke circulation system," discloses a heated product with a composite smoke circulation section. The heated product is composed of a composite smoke circulation section and a smoke-forming section. The composite smoke section is two cylindrical bodies with through holes, which are made of cellulose acetate tow or polylactic acid tow material. As a result of the effect of this embodiment, the smoke density is increased to a certain extent, but the smoke temperature exceeds 42°C. While the problem of smoke density is solved, the problem of high smoke temperature remains. Therefore, with regard to the technical shortcomings in the prior art, the inventors have analyzed and summarized the prior art, and conducted many tests and analyses to complete the present invention. Summary of the Invention

[0009] SUMMARY OF THE INVENTION It is an object of the present invention to provide a heated cartridge having a dual structure.

[0010] The present invention is achieved by the following technical solutions.

[0011] The present invention relates to a heated cartridge having a dual structure.

[0012] The heated cartridge is formed by sequentially joining the smoke-generating section and the smoke-restraining section together, wrapping them in an outer wrapping paper, and twisting them. The heated cartridge is cylindrical, having a length of 30 to 90 mm and a diameter of 4 to 10 mm.

[0013] According to a preferred embodiment of the present invention, the length of the smoke generating portion is 5 to 60 mm, and the length of the smoke restraining portion is 25 to 80 mm.

[0014] According to another preferred embodiment of the present invention, the diameters of the smoke forming portion and the smoke arresting portion are the same and their circularity is greater than 90%.

[0015] According to another preferred embodiment of the present invention, the smoke-producing section comprises a smoke-producing material and a wrapping layer enclosing the smoke-producing material, the smoke-producing material being comprised of tobacco or non-tobacco material, a smoke-producing agent, and a forming aid, in a weight ratio of 50-80:15-30:0.1-10. The smoke-producing material is in the form of powder, particles, paste, or sheet, and the wrapping layer is a cylindrical layer made of cellulose paper, a paper tube, a plastic tube, or other material.

[0016] According to another preferred embodiment of the invention, the smoke arresting section is an injection molded or extruded section having flow channels parallel to the longitudinal axis of the smoke arresting section, which is either directly connected to the smoke generating section and packaged, or is packaged by using a paper material or sleeved into a tubular layer, which is then connected to the smoke generating section and packaged.

[0017] According to another preferred embodiment of the present invention, in the cross section of the smoke restraint section, the ratio of the total area of ​​the passage holes to the non-passage area is 0.3 to 2.0.

[0018] According to another preferred embodiment of the present invention, the cross-sectional shape of the flow passages in the smoke restraining section is circular, polygonal or irregular, and the number of the flow passages is one or more.

[0019] According to another preferred embodiment of the present invention, the distance between the wall of the flow path of the smoke restraint section and the outer wall of the smoke restraint section is 0.1 to 3.0 mm. According to another preferred embodiment of the present invention, the mass of the smoke restraining portion per cigarette is 0.8 to 2.0 g.

[0020] According to another preferred embodiment of the present invention, the material for making the smoke restraint portion is a food-grade silicone rubber material such as methyl silicone rubber, methyl vinyl silicone rubber, methyl vinyl phenyl silicone rubber, nitrile silicone rubber, or fluorosilicone rubber, and the specific heat capacity of these materials is 1.5 to 2.5 KJ (kg·°C), and the moisture content of these materials is 1.0 to 4.0 wt%. DETAILED DESCRIPTION OF THE INVENTION

[0021] The present invention will now be described in more detail.

[0022] The present invention relates to a heated cartridge with a double structure. Figure 1 shows the specific structure of the heated cartridge, where 1 is the smoke generating section, 2 is the smoke arresting section, 2-1 is the flow channel wall, 2-2 is the flow channel, and 3 is the wrapping paper.

[0023] The heated cartridge is formed by sequentially joining the smoke-forming section and the smoke-restraining section together, wrapping them in an outer wrapping paper, and twisting them, and the heated cartridge is cylindrical with a length of 30 to 90 mm and a diameter of 4 to 10 mm.

[0024] After the heated tobacco product is loaded into the smoking set, one end of the smoke-forming unit contacts the heating element of the smoking set heater, and the other end of the smoke-forming unit is connected to one end of the smoke-constraining unit, which is used by the consumer for smoking. During the smoking process, the smoke-forming unit, which is in contact with the heating element of the heater, is heated to emit smoke, which flows through the smoke-constraining unit. The smoke-constraining unit serves to lower the temperature of the smoke and guide it, delivering the cooled, concentrated smoke into the consumer's mouth.

[0025] According to the present invention, the length of the smoke generating portion is 5 to 60 mm, and the length of the smoke restraining portion is 25 to 80 mm.

[0026] The primary function of the smoke-producing section in the heatable cartridge of the present invention is to provide the consumer with the required amount of smoke and aromatic substances during the smoking process. Therefore, the smoke-producing section should contain 150-400 mg of smoke-producing material to ensure a sufficient total smoke volume. If the length of the smoke-producing section is less than 5 mm, the amount of smoke-producing material will be insufficient, resulting in insufficient smoke and aromatic release. If the length of the smoke-producing section is longer than 60 mm, the smoke path through the smoke-producing material will be too long, increasing the resistance to suction and reducing the smoke concentration, thereby affecting the suction effect. Preferably, the length of the smoke-producing section is 12-50 mm, more preferably 18-40 mm.

[0027] The main advantage of the smoke-restricting portion in the heated cartridge of the present invention is that it has sufficient surface area and heat capacity for heat exchange with the smoke, thereby lowering the temperature of the smoke and guiding the smoke for inhalation by the consumer. If the length of the smoke-restricting portion exceeds 80 mm, the path through which the smoke passes becomes too long, resulting in a reduced amount of smoke produced per puff. If the length of the smoke-restricting portion is less than 25 mm, the path through which the smoke passes becomes too short, resulting in an insufficient cooling effect and a relatively high smoke temperature, thereby affecting the inhalation experience. Preferably, the length of the smoke-restricting portion is 26 to 68 mm, more preferably 30 to 60 mm.

[0028] In the present invention, the diameters of the smoke-forming part and the smoke-restricting part are the same, and their circularity is greater than 90%. In the present invention, circularity is to be understood as the ratio of the minimum diameter to the maximum diameter of the smoke-forming part and the smoke-restricting part, expressed as a percentage. The higher the circularity, the better the aesthetic properties of the smoke cartridge formed. According to the present invention, the smoke generating section and the smoke restraining section are directly connected and packaged, i.e., one end of the smoke generating section is directly connected to one end of the smoke restraining section, and an outer wrapping paper is wrapped around and fixed, thereby obtaining a heated cartridge with a double structure.

[0029] Alternatively, the smoke arresting section may be wrapped in paper or sleeved into a tubular layer, then connected to the smoke generating section for packaging, and then wrapped in an outer wrapping paper to obtain a heated cartridge having a dual structure.

[0030] To ensure safe inhalation, the paper or tubular layer material used in the present invention should meet the requirements of not melting, deforming, or releasing harmful substances at a temperature of 250° C. Examples of outer wrapping paper or tubular layer materials include currently available commercially available products such as aluminum foil composite paper sold under the trade name Aluminum Foil Paper by Yunnan Endian Technology Industry Development Co., Ltd., and plastic film composite cellulose paper sold under the trade name Transparent Forming Paper by Shanghai Weixi Biotechnology Co., Ltd., including cellulose paper, aluminum foil composite paper, plastic film composite cellulose paper, adhesive-backed stickers, and plastic films.

[0031] The smoke generating section and the smoke restraining section will be described in detail below.

[0032] According to the present invention, the smoke generating section is composed of a smoke generating material and a wrapping material layer that wraps the smoke generating material, and the smoke generating material is composed of tobacco or non-tobacco material, a smoke generating agent, and a molding aid, and the weight ratio thereof is 50-80:15-30:0.1-10.

[0033] In the present invention, the basic function of the tobacco or non-tobacco material in the smoking material is to provide the basic components of aroma substances. Tobacco materials used in the present invention include, for example, tobacco leaves, expanded tobacco stems, and cut tobacco. Tobacco leaves include flue-cured tobacco, burley tobacco, and airing cigarettes. Non-tobacco materials include, for example, tea leaves, mint leaves, mugwort leaves, loquat leaves, cocoa, kudzu root, licorice, and sugarcane powder. All of these materials are commonly used in the art.

[0034] The primary function of the smoke generating agent in a smoking material is to provide the basic components of smoke. The smoke generating agent used in the present invention is, for example, glycerin, propylene glycol, glycerol diacetate, or glycerol triacetate. These smoke generating agents are commonly used in the art and are currently widely sold on the market, such as glycerol sold under the trade name Glycerol by Guangzhou Hongzhou Chemical Co., Ltd.

[0035] The primary function of the forming aid in the smoke-generating material is to plasticize the plant raw materials and other ingredients into the desired shape after mixing and drying. Examples of forming aids used in the present invention include guar gum, carboxymethylcellulose, chitosan, and carrageenan. These forming aids are commonly used in the art and are currently widely sold on the market, such as carrageenan sold by Yiwu Yilong Biotechnology Co., Ltd. under the trade name Carrageenan.

[0036] In the present invention, when the amounts of the smoking agent and the molding aid are within the range, if the amount of tobacco or non-tobacco material is lower than 50, the smoking material will produce a hollow smoke when inhaled, the aroma will be weak, and the original aroma characteristics of the plant will not be restored. If the amount of tobacco or non-tobacco material is higher than 80, the smoking material will have insufficient processing resistance and will be easily crushed. Therefore, it is appropriate to apply the amount of tobacco or non-tobacco material in the range of 50 to 80, preferably 56 to 74, and more preferably 60 to 70.

[0037] Similarly, when the amounts of tobacco or non-tobacco materials and molding aids are within the range, if the amount of smoke-generating agent is lower than 15, the amount of smoke generated will be low, thus affecting the smoking experience. If the amount of smoke-generating agent is higher than 30, the smoke-generating material will be prone to absorbing moisture, which will not contribute to the stability of product quality. Therefore, an application amount of smoke-generating agent of 15 to 30, preferably 18 to 26, more preferably 20 to 24, is appropriate.

[0038] When the amount of tobacco or non-tobacco material and smoking agent is within the range, if the amount of molding aid applied is less than 0.1, the smoking base will have low tensile strength and will not be suitable for manufacturing and subsequent processing. If the amount of molding aid applied is higher than 10, the characteristic unpleasant odor will be severe during smoking, thereby affecting the smoking experience. Therefore, the amount of molding aid applied is preferably 0.1 to 10, preferably 0.3 to 7.0, and more preferably 0.6 to 5.0.

[0039] The smoking material may be in the form of powder, particles, paste or sheet, and may be obtained by processing the raw materials according to their proportions in accordance with tobacco processing techniques well known to those skilled in the art, see CN Patent Application Publication No. 109393543, entitled "A superfine powder plant slice and a preparation method thereof", CN Patent Application Publication No. 110876487, entitled "A method for preparing a smoke formation section of a granular heat-not-burn cigarette", and CN Patent Application Publication No. 110652041, entitled "Heat-not-burn smoking generator, a preparation method therefor, a tobacco product, and a smoking body".

[0040] The packaging material layer can effectively package and shape the smoke-generating material to meet the requirements of subsequent processing, and the packaging material layer can be made of cellulose paper, paper tubes, plastic tubes, or other materials. These materials are commonly used in the art and are currently widely sold on the market, such as the cellulose paper sold by Yunnan Endian Technology Industry Development Co. Ltd. under the trade name "filter stick forming paper."

[0041] In the present invention, the smoke restraint section is an injection-molded or extruded member having a flow path parallel to the longitudinal axis of the smoke restraint section, the flow path being linear or a continuous non-linear flow path such as a spiral or a meandering flow path. A specific structure of a linear flow path in the smoke restraint section is shown in Figure 1. A specific structure of a continuous non-linear flow path in the smoke restraint section is shown in Figure 2.

[0042] The present invention forms a smoke restraint section using a food-grade silicone rubber material with a specific heat capacity of 1.5 to 2.5 kJ / (kg·°C) and a moisture content of 1.0 to 4.0% by weight. As smoke passes through the smoke restraint section, the high-temperature smoke exchanges heat with the food-grade silicone rubber material, consuming some of the smoke heat. At the same time, the moisture in the food-grade silicone rubber material is heated and vaporizes, consuming some of the smoke heat. In addition, the flow path is long. These effects continue as the smoke moves forward, gradually reducing the smoke temperature until it is suitable for smoking by the consumer.

[0043] Specific heat capacity is the heat absorbed or released by a unit mass of a material when its temperature changes by a unit, and is a basic parameter of material performance. The specific heat capacity of the material of the smoke restraint section of the present invention is sufficient to absorb heat as smoke passes through the smoke restraint section, ensuring that the inlet smoke temperature is suitable for human inhalation. The specific heat capacity of the material of the smoke restraint section of the present invention is 1.5 to 2.5 KJ / (kg·°C), and the moisture content is 1.0 to 4.0 wt%.

[0044] If the specific heat capacity of the smoke restraint section material is lower than 1.5 kJ / (kg·°C), the cooling effect will not be sufficient, resulting in smoke burns and affecting the smoking experience. If the specific heat capacity of the smoke restraint section material is higher than 2.5 kJ / (kg·°C), the moisture in the smoke will easily condense into droplets, which will enter the mouth through the smoke restraint section flow path during inhalation and affect the smoking experience. Therefore, the specific heat capacity of the smoke restraint section material should be 1.5 to 2.5 kJ / (kg·°C), preferably 1.8 to 2.3 kJ / (kg·°C), and more preferably 1.9 to 2.2 kJ / (kg·°C).

[0045] Similarly, if the moisture content of the smoke restraining section material is lower than 1.0% by weight, the moisture content will be too low, and the cooling effect achieved by moisture evaporation will not be obvious. If the moisture content of the smoke restraining section material is higher than 4.0% by weight, the moisture content of the smoke restraining section material will be too high, and the unevaporated water may diffuse into the smoke-forming section, which will easily cause tobacco mold and affect product quality. Therefore, the moisture content of the smoke restraining section material is 1.0 to 4.0% by weight, preferably 1.4 to 3.6%, and more preferably 1.8 to 3.0%.

[0046] The moisture content of the material of the smoke arrestor of the present invention is determined in accordance with the detection method specified in GB / T 23357-2009 (Tobacco and tobacco products - Determination of moisture content - Karl Fischer method).

[0047] The injection-molded part is obtained by processing food-grade silicone rubber materials, such as methyl silicone rubber, methyl vinyl silicone rubber, methyl vinyl phenyl silicone rubber, nitrile silicone rubber or fluorosilicone rubber, according to Chinese Patent Application Publication No. 107639787, an invention entitled "A process method for forming a silica gel layer by injection molding on the surface of a glass bottle."

[0048] The extrusion molding part is obtained by processing food-grade silicone rubber materials, such as methyl silicone rubber, methyl vinyl silicone rubber, methyl vinyl phenyl silicone rubber, nitrile silicone rubber or fluorosilicone rubber, according to Chinese Patent No. 102642291, an invention entitled "A preparation process of a large diameter silicone tube".

[0049] These food-grade silicone rubber materials are all products currently on the market, such as the methyl vinyl silicone rubber sold by Shenzhen Chuangyou Silicone Rubber Science and Technology Co., Ltd. under the trade name 110 methyl vinyl silicone rubber, and the methyl vinyl phenyl silicone rubber sold by Anhui Aiyueta Silicone Oil Co., Ltd. under the trade name IOTA120.

[0050] Of course, in addition to these food-grade silicone rubber materials, any other processable materials that should meet the above-mentioned basic requirements and do not have any adverse effects on subsequent processing and use can be used in the present invention and are also within the protection scope of the present invention.

[0051] In the present invention, the cross-sectional shape of the flow passage of the smoke restraint section is circular, polygonal or irregular, and the number of flow passages is one or more.

[0052] In the present disclosure, polygons should be understood as equilateral isometric geometric shapes having three or more sides, such as triangles, pentagons, gear shapes, rhombus shapes, etc. For example, gear shapes specifically refer to Figure 3, and other equilateral isometric geometric shapes refer to Figure 4. Irregular shapes should be understood as irregular geometric shapes such as flora and fauna patterns, snowflakes, non-circular polygons, etc.

[0053] According to the present invention, in the cross section of the smoke-forming portion, the ratio of the total area of ​​the flow passage holes to the non-flow passage area is 0.3 to 2.0. If the ratio of the total area of ​​the flow passage holes to the non-flow passage area is less than 0.3, the total area of ​​the flow passage holes is small, resulting in high suction resistance during the inhalation process and insufficient smoke concentration. If the ratio of the total area of ​​the flow passage holes to the non-flow passage area is greater than 2.0, the total area of ​​the flow passage holes is too large, the smoke flow rate is too high, and the smoke-restricting portion cannot fully exert its cooling effect, resulting in high smoke temperatures and high temperatures at the lip side of the tobacco cartridge, resulting in a poor inhalation experience.

[0054] According to the present invention, the distance between the wall of the flow passage of the smoke restraint section and the outer wall of the smoke restraint section is 0.1 to 3.0 mm. Here, the term "distance" should be understood to mean the shortest distance between the wall of the flow passage and the outer wall of the smoke restraint section in the flow passage. If the distance is less than 0.1 mm, the outer wall of the smoke restraint section will be easily heated by smoke, and the temperature of the smoke restraint section will be too high, affecting the smoking experience. If the distance is greater than 3.0 mm, the inner diameter of the flow passage will be too small, increasing the drawing resistance of the tobacco cartridge, reducing the amount of smoke, and reducing the area for heat exchange with the smoke, thereby reducing heat exchange with the smoke and causing the smoke temperature to be relatively high, thereby significantly affecting the smoking experience.

[0055] In the present invention, the mass of the smoke-retaining portion per cigarette is 0.8-2.0 g. If the mass is less than 0.8 g, the smoke cannot be effectively cooled, and the suction effect will be affected. If the mass is more than 2.0 g, the cigarette will be too heavy, which will affect the manufacturing process and the suction experience.

[0056] The method for determining the temperature and density of each smoke is specifically described below.

[0057] In accordance with GB / T 19609-2004 (Tobacco - Determination of total and nicotine-free dry weight substances using a repeat analysis smoking machine) and GB / T 16447-2004 (Tobacco and tobacco products - Conditioning and test atmospheres), a smoke density detector manufactured by Dongguan Feihong instrument equipment Co. Ltd. was used to measure the smoke temperature and smoke density, respectively, for each puff test.

[0058] The smoke density index is measured using the above device, provided that the wavelength λ of the laser light source is equal to 630 μm and the detection optical path is 4 cm.

[0059] Smoking procedure: A MYUZ smoking set manufactured by Dongguan Juwei Electronics Co., Ltd. was selected, and the inhalation procedure was as follows: After the heater completed preheating, the device entered the inhalation state, the inhalation volume per puff was 35 ml, the inhalation time was 2 seconds, the inhalation smoke flow rate was 17.5 ml / s, the inhalation interval was 13 seconds, the number of inhalations was 16, and the total inhalation operation time was 240 seconds.

[0060] Temperature measurement: A K-type thermocouple temperature detector is used to measure the mainstream smoke temperature and the cartridge lip side temperature.

[0061] Smoke Density Index Measurement: Smoke density measured by the light transmission method is a non-contact measurement method. When a light beam from a light source passes through an aerosol medium, the light beam is scattered and refracted on the spherical surface of the aerosol particles, and the particles absorb the light. Therefore, the intensity of the transmitted light of the laser beam penetrating the aerosol smoke is attenuated. The higher the aerosol concentration, the more obvious the attenuation effect of the transmitted light; the lower the aerosol concentration, the weaker the attenuation effect of the transmitted light. Under certain detection conditions, the ratio of the incident light intensity to the absorbed light intensity is called the extinction ratio, and the determined extinction ratio is the determined smoke density index, expressed as a percentage.

[0062] The beneficial effects of the present invention are as follows:

[0063] In the smoking process, the dual-structure heated cartridge releases smoke by contacting the smoke-forming section with the heating element of the heater, and the smoke flows through the smoke-restricting section. The smoke-restricting section has the effect of lowering the smoke temperature and guiding the smoke, and the cooled, highly concentrated smoke is delivered to the consumer's mouth. The heated cartridge of the present invention has the dual advantages of high smoke volume and low smoke temperature, greatly improving the consumer's smoking experience. The dual-structure smoke cartridge has a simple structure and is easy to industrialize, providing a new technical solution for heated cartridge structure. [Brief explanation of the drawings]

[0064] [Figure 1] 1 is a schematic cross-sectional view of a smoke arresting portion having a straight passage of a heated cartridge of the present invention. [Figure 2] 1 is a schematic cross-sectional view of a smoke arresting portion having a continuous non-linear passageway of a heated cartridge of the present invention. [Figure 3] 1 is a schematic cross-sectional view of a smoke arresting portion having sawtooth channels of a heated cartridge of the present invention. [Figure 4] 1 is a schematic cross-sectional view of a smoke arresting portion having circular or polygonal flow channels of a heated cartridge of the present invention. [Example]

[0065] The present invention will be better understood from the following examples.

[0066] Example 1 The heated cartridge having a dual structure according to the present invention The heated cartridge with a double structure of the present invention is formed by sequentially wrapping and twisting a smoke-forming section 1 and a smoke-restricting section 2 with an outer wrapping paper 3 made of cellulose paper sold by Yunnan Endian Technology Industry Development Co. Ltd. under the product name Filter Stick Forming Paper. The diameters of the smoke-forming section and the smoke-restricting section are the same, and the circularity of the smoke-forming section and the smoke-restricting section is 90.2%. The heated cartridge is cylindrical with a length of 45 mm and a diameter of 7 mm, the length of the smoke-forming section is 12 mm, and the length of the smoke-restricting section is 33 mm. The smoke-generating section is composed of a smoke-generating material and a wrapping material layer that encases the smoke-generating material. The smoke-generating material is composed of flue-cured tobacco raw material, glycerol smoke-generating agent, and guar gum molding aid, with a weight ratio of 70:20:7.4. The smoke-generating material is powdered smoke-generating material, and the wrapping material layer is a tubular layer made of cellulose paper.

[0067] The smoke restraining section is an injection-molded part directly connected to and packaged with the smoke-forming section, with channels parallel to its longitudinal axis. In the cross-section of the smoke-forming section, the ratio of the total area of ​​the channel holes to the non-channel area is 0.9. The channels of the smoke restraining section have two parallel, linear channels with circular cross-sections, and the distance between the walls of the channels of the smoke restraining section and the outer wall of the smoke restraining section is 2.4 mm. The mass of the smoke restraining section per cigarette is 1.0 g. The material of the smoke restraining section is a methylsilicone rubber material with a specific heat capacity of 2.2 KJ / (kg·°C). The moisture content of the smoke restraining section is 1.7% by weight according to the method described herein.

[0068] The method described in the specification of this application detects the mainstream smoke temperature, mouth end temperature, and smoke density index of the heated cartridge in this embodiment, and the detection results are sorted into Tables 1, 2, and 3.

[0069] At the same time, the mainstream smoke temperature, lip end temperature and smoke density index of a control sample, a heated HEETS original flavor cartridge manufactured by Philip Morris International, were also detected, and the detection results are also listed in Tables 1, 2 and 3, respectively.

[0070] Example 2 The heated cartridge having a dual structure according to the present invention The heated cartridge with a double structure of the present invention is formed by sequentially connecting and twisting a smoke-generating section 1 and a smoke-restricting section 2 using aluminum foil composite paper sold under the product name Aluminum Foil Paper by Yunnan Endian Technology Industry Development Co. as the outer wrapping paper 3, where the diameters of the smoke-generating section and the smoke-restricting section are the same and the circularity of the smoke-generating section and the smoke-restricting section is greater than 90.6%. The heated cartridge is cylindrical with a length of 74 mm and a diameter of 5 mm, the length of the smoke-generating section is 20 mm, and the length of the smoke-restricting section is 54 mm, where: The smoke-generating part is composed of a smoke-generating material and a packaging material layer that encases the smoke-generating material. The smoke-generating material is composed of smokeless tea plant raw material, propylene glycol smoke-generating agent, and carboxymethyl cellulose forming aid, with a weight ratio of 80:25:5.5. The smoke-generating material is a granular smoke-generating material. The packaging material layer is a tubular layer made of paper sold by Yutong Environmental Protection Technology (Suqian) Co. Ltd. under the product name Paper Straw.

[0071] The smoke restraint section is an extrusion-molded part with channels parallel to the longitudinal axis of the smoke restraint section, which is wrapped in paper and then packaged together with the smoke-forming section. In the cross-section of the smoke-forming section, the ratio of the total area of ​​the channel holes to the non-channel area is 0.3, and the number of channels in the smoke restraint section is two, i.e., linear channels with hexagonal cross-sections and spiral channels with circular cross-sections are arranged sequentially from the outside to the inside. The distance between the walls of the channels in the smoke restraint section and the outer wall of the smoke restraint section is 1.0 mm, the mass of the smoke restraint section per cigarette is 2.0 g, the material of the smoke restraint section is a methyl vinyl silicone rubber material with a specific heat capacity of 1.5 kJ / (kg·°C), and the moisture content of the smoke restraint section is 2.1 wt% according to the method described herein.

[0072] Example 3 The heated cartridge having a dual structure according to the present invention The heated cartridge with a double structure of the present invention is formed by sequentially connecting and twisting the smoke-generating section 1 and the smoke-restricting section 2, by wrapping a plastic thin film composite cellulose paper sold by Shanghai Weixi Biotechnology Co., Ltd. under the product name Transparent Molding Paper as the outer wrapping paper 3. The diameters of the smoke-generating section and the smoke-restricting section are the same, and the circularity of the smoke-generating section and the smoke-restricting section is greater than 91.2%. The heated cartridge is cylindrical with a length of 73 mm and a diameter of 6 mm, the length of the smoke-generating section is 48 mm, and the length of the smoke-restricting section is 25 mm, where: The smoke-generating part is composed of a smoke-generating material and a wrapping material layer enclosing the smoke-generating material, the smoke-generating material being composed of burley tobacco, expanded tobacco stem tobacco raw material, propylene glycol smoke-generating agent, and chitosan molding aid, in a weight ratio of 50:15:3.7, and the smoke-generating material being a paste-like smoke-generating material. The wrapping material layer is a tubular layer made of plastic sold by Dongguan Linghang Silicone Products Co., Ltd. under the trade name of silicone hose.

[0073] The smoke restraint section is an injection-molded part with flow channels parallel to the longitudinal axis of the smoke restraint section. The smoke restraint section is packed into a cylindrical layer, then connected to the smoke-forming section and packaged together. In the cross section of the smoke restraint section, the ratio of the total area of ​​the flow channel holes to the non-flow channel area is 1.5. The flow channels of the smoke restraint section are two parallel linear flow channels with serrated cross-sectional edges (see Figure 3). The distance between the walls of the flow channels of the smoke restraint section and the outer wall of the smoke restraint section is 3.0 mm. The mass of the smoke restraint section per cigarette is 1.3 g. The material of the smoke restraint section is a methyl vinyl phenyl silicone rubber material with a specific heat capacity of 1.8 KJ / (kg·°C). The moisture content of the smoke restraint section is 2.4 wt% according to the method described herein.

[0074] Example 4 The heated cartridge having a dual structure according to the present invention The heated cartridge with a double structure of the present invention is formed by sequentially connecting and twisting the smoke-generating section 1 and the smoke-restricting section 2, and wrapping them in a plastic film sold by Shanghai Weixi Biotechnology Co., Ltd. under the product name Transparent Forming Paper as the outer wrapping paper 3. The diameters of the smoke-generating section and the smoke-restricting section are the same, and the circularity of the smoke-generating section and the smoke-restricting section is greater than 92.8%. The heated cartridge is cylindrical with a length of 55 mm and a diameter of 10 mm, the length of the smoke-generating section is 5 mm, and the length of the smoke-restricting section is 50 mm, where: The smoking section is composed of a smoking material and a layer of packaging material enclosing the smoking material, the smoking material being composed of dried tobacco, expanded tobacco stem tobacco raw material, glycerol smoking agent, and carrageenan forming aid, in a weight ratio of 60:30:1.8, the smoking material being in sheet form, and the packaging material layer being a tubular layer made of cellulose paper sold by Yunnan Endian Technology Industry Development Co. Ltd. under the product name Filter Stick Forming Paper.

[0075] The smoke restraining section is an extruded member directly packaged with the smoke-forming section, having flow channels parallel to its longitudinal axis. In the cross section of the smoke restraining section, the ratio of the total area of ​​the flow channel holes to the non-flow channel area is 2.0. The flow channels of the smoke restraining section are two parallel, continuous, meandering flow channels with a circular cross section. The distance between the walls of the flow channels of the smoke restraining section and the outer wall of the smoke restraining section is 1.6 mm. The mass of the smoke restraining section per cigarette is 1.8 g. The material of the smoke restraining section is a food-grade silicone rubber material of fluorosilicone rubber with a specific heat capacity of 2.5 kJ / (kg·°C). The moisture content of the smoke restraining section is 3.5 wt% according to the method described herein.

[0076] Example 5 The heated cartridge having a dual structure according to the present invention The heated cartridge with a double structure of the present invention is formed by sequentially connecting and twisting the smoke-forming section 1 and the smoke-restricting section 2 together, by wrapping them in aluminum foil composite paper sold by Yunnan Endian Technology Industry Development Co., Ltd. under the trade name Aluminum Foil Paper as the outer wrapping paper 3. The diameters of the smoke-forming section and the smoke-restricting section are the same, and the circularity of the smoke-forming section and the smoke-restricting section is greater than 92.0%. The heated cartridge is cylindrical with a length of 84 mm and a diameter of 4 mm, the length of the smoke-forming section is 60 mm, and the length of the smoke-restricting section is 24 mm, where: The smoke-generating part is composed of a smoke-generating material and a packaging material layer that encases the smoke-generating material. The smoke-generating material is composed of mint leaf smokeless plant raw material, glycerol triacetate smoke-generating agent, and chitosan molding aid, with a weight ratio of 58:18:0.1. The smoke-generating material is a granular smoke-generating material. The packaging material layer is a tubular layer made of paper sold by Yutong Environmental Protection Technology (Suqian) Co. Ltd. under the product name Paper Straw.

[0077] The smoke restraining section is an extrusion molded part having flow channels parallel to the longitudinal axis of the smoke restraining section, the smoke restraining section is wrapped in paper material, and then packaged together with the smoke-forming section. In the cross section of the smoke-forming section, the ratio of the total area of ​​the flow channel holes to the non-flow channel area is 0.5. The number of flow channels in the smoke restraining section is one, and the flow channel in the smoke restraining section is a spiral flow channel with a circular cross section. The distance between the wall of the flow channel in the smoke restraining section and the outer wall of the smoke restraining section is 0.1 mm, the mass of the smoke restraining section per cigarette is 0.8 g, the material of the smoke restraining section is a methyl vinyl silicone rubber material with a specific heat capacity of 2.0 KJ / (kg·°C), and the moisture content of the smoke restraining section is 4.0 wt% according to the method described herein.

[0078] Example 6 The heated cartridge having a double structure according to the present invention The heated cartridge with a double structure of the present invention is formed by sequentially connecting and twisting a smoke-forming part 1 and a smoke-restricting part 2 together, and wrapping them with a plastic thin film composite cellulose paper sold by Shanghai Weixi Biotechnology Co., Ltd. under the product name Transparent Molding Paper as an outer wrapping paper 3. The diameters of the smoke-forming part and the smoke-restricting part are the same, and the circularity of the smoke-forming part and the smoke-restricting part is greater than 92.5%, and the heated cartridge is cylindrical with a length of 90 mm and a diameter of 8 mm, the length of the smoke-forming part is 34 mm, and the length of the smoke-restricting part is 56 mm, where: The smoke-forming part is composed of a smoke-generating material and a wrapping layer enclosing the smoke-generating material, the smoke-generating material being composed of burley tobacco, expanded tobacco stem tobacco raw material, glyceride diacetate smoke-generating agent, and carboxymethyl cellulose molding aid, in a weight ratio of 68:28:10, and the smoke-generating material being a paste-like smoke-generating material. The wrapping layer is a tubular layer made of plastic sold by Dongguan Linghang Silicone Products Co., Ltd. under the trade name of silicone tube.

[0079] The smoke restraint section is an injection-molded part with flow channels parallel to the longitudinal axis of the smoke restraint section. The smoke restraint section is packed into a cylindrical layer, then connected to the smoke-forming section, and packaged together. In the cross section of the smoke restraint section, the ratio of the total area of ​​the flow channel holes to the non-flow channel area is 1.8. The smoke restraint section has three flow channels, namely, a linear flow channel with a circular cross section, a linear passage with a square cross section, and a spiral flow channel with a circular cross section, arranged from the outside to the inside. The distance between the wall surface of the flow channel of the smoke restraint section and the outer wall of the smoke restraint section is 2.0 mm. The mass of the smoke restraint section per cigarette is 1.6 g. The material of the smoke restraint section is a methyl vinyl phenyl silicone rubber material with a specific heat capacity of 2.8 kJ / (kg·°C), and its moisture content was 1.0 wt% using the method described herein.

[0080] According to the method described in the Summary of the Invention (Means for Solving the Problems), the mainstream smoke temperature, mouth end temperature and smoke density index of the heated cartridges of Examples 1 to 6 were detected, and the detection results are sorted into Tables 1, 2 and 3.

[0081] The results in Tables 1 to 3 clearly show that the smoke temperature of the dual-structure heated cartridge of the present invention was 5 to 12°C lower than that of the HEETS sample, the mouth end temperature was 6 to 17°C lower, and the maximum smoke density was 24% lower. The samples of Examples 1 to 6 generally had lower smoke temperatures and mouth end temperatures than the control sample, and a higher smoke density index. The dual-structure heated cartridge of the present invention has the dual characteristics of lower smoke temperature and higher smoke density.

[0082] [Table 1]

[0083] [Table 2]

[0084] [Table 3] [Explanation of symbols]

[0085] 1 Smoke forming part 2 Smoke restraint part 2-1 Channel wall 2-2 Straight channel 2-3 Non-linear flow path 3 wrapping paper 4 grooves 4-1 Medial groove 4-2 Outer groove

Claims

1. A heated cartridge having a dual structure, the dual structure of the heated cartridge including a smoke-forming section and a smoke-restraining section joined together in sequence, the heated cartridge having an outer wrapping paper that wraps the smoke-forming section and the smoke-restraining section, the heated cartridge being cylindrical with a length of 30 to 90 mm and a diameter of 4 to 10 mm, The material for making the smoke arresting portion is a food-grade silicone rubber material such as methyl silicone rubber, methyl vinyl silicone rubber, methyl vinyl phenyl silicone rubber, nitrile silicone rubber, or fluorosilicone rubber, and the specific heat capacity of these materials is 1.5 to 2.5 KJ / (kg °C), and the moisture content of these materials is 1.0 to 4.0 wt %. Heated cartridge.

2. 2. The heated cartridge according to claim 1, wherein the length of the smoke generating portion is 5 to 60 mm, and the length of the smoke restraining portion is 25 to 80 mm.

3. 2. The heated cartridge of claim 1, wherein the smoke-forming portion and the smoke-restricting portion have the same diameter and a circularity thereof of greater than 90%.

4. 2. The heated cartridge of claim 1, wherein the smoke-forming section is composed of a smoke-generating material and a wrapping material layer that wraps the smoke-generating material, the smoke-generating material being composed of tobacco or non-tobacco material, a smoke-generating agent, and a molding aid, the weight ratio thereof being 50-80:15-30:0.1-10, the smoke-generating material being in the form of powder, particles, a paste, or a sheet, and the wrapping material layer being a tubular layer made of cellulose paper, a paper tube, a plastic tube, or other material.

5. 5. The heated cartridge of claim 4, wherein the smoke confining portion is an injection molded or extruded portion having a flow path parallel to the longitudinal axis of the smoke confining portion, and the smoke confining portion is either directly connected to the smoke forming portion or is wrapped in paper or sleeved onto the tubular layer and further connected to the smoke forming portion.

6. 6. The heated cartridge according to claim 5, wherein in a cross section of the smoke restraining portion, the ratio of the total area of ​​the passage holes to the non-passage area is 0.3 to 2.

0.

7. The heated cartridge according to claim 5 , wherein the cross-sectional shape of the flow passage of the smoke restraining portion is circular, polygonal, or irregular, and the number of the flow passages is one or more.

8. 8. The heated cartridge according to claim 5, wherein the distance between the wall of the flow path of the smoke restraint section and the outer wall of the smoke restraint section is 0.1 to 3.0 mm.

9. 6. The heated cartridge according to claim 5, wherein the mass of the smoke arresting portion per cigarette is 0.8 to 2.0 g.

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