Electromagnetic atomization smoke cartridge containing magnetic metal paper and manufacturing method thereof

Abstract

The invention provides an electromagnetic atomization smoke cartridge containing magnetic metal paper and a manufacturing method of the electromagnetic atomization smoke cartridge. The electromagnetic atomization smoke cartridge comprises a matrix section, a cooling section and a filter tip section which are sequentially and coaxially connected in the longitudinal direction. The metal paper is wound on the outer sides of the substrate section, the cooling section and the filter tip section to form a columnar cigarette cartridge, and the metal paper is formed by compounding a ferromagnetic metal foil and cigarette paper; and the metal paper part containing the ferromagnetic metal foil is correspondingly wound on the substrate section. A smoke tube of the electromagnetic atomization smoke cartridge is composed of metal paper formed by partially compounding strong magnetic metal foil and cigarette paper, a formed annular foil heating receptor is used for annularly wrapping a matrix section, and the annular foil embedded in the smoke tube plays a triple role of an electromagnetic induction circumferential heating body, a mechanical support reinforcing body and a leakage blocking layer at the same time. By means of the design, high heating efficiency, excellent heating uniformity and excellent reliability can be guaranteed, and application of resistance heating type smoking sets and electromagnetic induction heating type smoking sets can be compatible.

Description

Technical Field

[0001] The invention relates to the field of electronic cigarette atomization, and in particular to an electromagnetic atomization cigarette cartridge containing magnetic metal paper and a manufacturing method thereof. Background Art

[0002] According to the definition of the World Health Organization (WHO) on its official website, heat-not-burn tobacco products usually use a battery-powered heating system to heat the specially made cigarette ingredients to about 350°C for carbonization without combustion. The carbonization temperature is much lower than the combustion temperature of traditional cigarettes, which is 600-700°C. It is a new type of tobacco product. In aerosol-generating products, inhalable aerosols are usually generated by transferring heat from a heating element to an aerosol matrix and carbonizing it. During heating, volatile compounds are released from the aerosol-forming matrix and entrained in the air for the user to inhale.

[0003] The mainstream application methods of existing heat-not-burn cigarette cartridges include resistive center heating and electromagnetic center heating, especially insert-type electromagnetic center heating. Insert-type electromagnetic center heating usually embeds a thick sheet heating receptor in the aerosol matrix of the electromagnetic atomization cigarette cartridge to generate heat. This cigarette cartridge structure has several limitations, such as: first, the coordinated winding process of the heating receptor strip and the aerosol matrix is ​​highly complex; second, the thickness of the commercially available heating receptor strip is usually between 60 and 100 microns. This thick sheet configuration makes it difficult to cut the columnar smoke body online at high speed, and the tool is susceptible to wear; third, the contact area between the heating receptor and the aerosol matrix is ​​limited, and after the inhalation is completed, it can be seen that some carbonization is incomplete; finally, since the annular aluminum foil has a certain shielding effect on the high-frequency magnetic field emitted by the electromagnetic smoking device, the outer layer of this type of cigarette cartridge should not be made of aluminum foil to prevent moisture and leakage, otherwise it will affect the accuracy and stability of electromagnetic induction coupling.

[0004] There is also a type of non-insertion barrel baking heating mode, which mainly adopts the resistance circumferential heating mode, that is, the circumferential heating smoking device is used to heat the cigarette cartridge. The smoking device is provided with an annular circumferential heating element on the inner wall of the cigarette cartridge compartment, and the aerosol is formed by physically baking the built-in cigarette cartridge at low temperature. In this mode of circumferential heating from the outside of the cigarette cartridge, the heat must first penetrate the cigarette paper before reaching the aerosol matrix. It is an indirect thermal contact method, so there are defects such as slow smoke output speed and aerosol with paper paste and glue smell; moreover, this type of resistance circumferential heating smoking device does not have the possibility of being widely used in electromagnetic atomization cigarette cartridges for commercial use, because it faces many challenges in temperature measurement and control mechanism, power consumption stability and heat energy loss, so it is impossible to form a relatively stable and uniform aerosol generation electromagnetic heating system.

[0005] In view of this, the present invention proposes an electromagnetic atomization cartridge containing magnetic metal paper and a manufacturing method thereof, which can realize both efficient electromagnetic heating and the convenience of direct circumferential heating. Summary of the invention

[0006] In order to solve the above-mentioned problems in the prior art, the present invention provides an electromagnetic atomization cigarette cartridge containing magnetic metal paper and a manufacturing method thereof.

[0007] An electromagnetic atomization cigarette cartridge containing magnetic metal paper comprises a matrix section, a cooling section, and a filter section which are coaxially connected in sequence along the longitudinal direction; further comprising metal paper which is wound around the outside of the matrix section, the cooling section, and the filter section to form a columnar cigarette cartridge, wherein the metal paper is partially composited with a ferromagnetic metal foil and cigarette paper; the metal paper containing the ferromagnetic metal foil is at least partially wound around the matrix section.

[0008] Preferably, the ferromagnetic metal foil is a single metal or a single alloy material and is configured as a single-layer structure.

[0009] Preferably, the ferromagnetic metal foil is a composite metal material and is configured as a multi-layer structure.

[0010] Preferably, the single layer thickness of the cigarette paper is 0.02-0.08 mm.

[0011] Preferably, the single layer thickness of the ferromagnetic metal foil is 0.003-0.03 mm.

[0012] Preferably, the metallic paper contains flame retardant and / or nicotine.

[0013] Preferably, the metal paper is a composite of a ferromagnetic metal foil and tobacco paper or cigarette paper.

[0014] Preferably, after the metal paper is wound around the matrix segment, the overlapping area of ​​the ferromagnetic metal foil and the matrix segment is not less than 70% of the side surface area.

[0015] Preferably, after the metal paper is wound around the substrate segment, the ferromagnetic metal foil is located on the inner side of the smoke tube close to the substrate segment.

[0016] Preferably, no magnetic heating receptor is provided inside the matrix segment.

[0017] A method for manufacturing the electromagnetic atomization cigarette cartridge containing magnetic metal paper, the method comprising:

[0018] S1: rolling the aerosol matrix substrate and cutting it into columnar matrix segments, or molding the aerosol matrix substrate into columnar matrix segments;

[0019] S2: partially compounding the ferromagnetic metal foil with cigarette paper to form metal paper, or partially compounding the ferromagnetic metal foil with tobacco paper or cigarette paper to form metal paper;

[0020] S3: The metal paper is wound onto the outer side surfaces of the coaxially connected matrix section, cooling section and filter section to form an electromagnetic atomization cartridge, wherein the strong magnetic metal foil is located on the inner wall of the cigarette tube, corresponding to the matrix section.

[0021] Compared with the prior art, the present invention has the following beneficial effects: the external cigarette tube of the cigarette cartridge is composed of metal paper partially compounded by a strong magnetic metal foil and cigarette paper, and the formed annular foil heating sensor is used to annularly wrap the aerosol matrix segment, and the annular foil embedded in the cigarette tube plays the triple role of electromagnetic induction circumferential heating body, mechanical support reinforcement body and leakage barrier layer. This design can ensure high heating efficiency, excellent heating uniformity and excellent reliability, and is compatible with the application of resistance heating type and electromagnetic induction heating type smoking devices. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] Figure 1 A schematic diagram of the winding of an electromagnetic atomization cartridge.

[0023] Figure 2 It is a schematic longitudinal cross-sectional view of the electromagnetic atomization cartridge of the first embodiment.

[0024] Figure 3 This is a schematic diagram of the overall magnetic flux distribution of the annular foil heating susceptor in the first embodiment.

[0025] Figure 4 A diagram is drawn for the magnetic flux distribution of the annular foil heating susceptor along the arc length direction of its side in Example 1.

[0026] Figure 5 It is a schematic cross-sectional view of the electromagnetic atomization cartridge of the second embodiment.

[0027] Figure 6 This is the thermogravimetric analysis (TGA) curve of the three-layer metal paper sample in Example 2.

[0028] Figure 7 This is the differential scanning calorimetry (DSC) curve of the three-layer metal paper sample in Example 2.

[0029] Figure 8 It is a schematic longitudinal cross-sectional view of the electromagnetic atomization cartridge of the fourth embodiment. DETAILED DESCRIPTION

[0030] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0031] Embodiment 1

[0032] like Figures 1 to 2 The electromagnetic atomization cartridge shown comprises a matrix section 1, a cooling section 2, and a filter section 3 which are coaxially connected in the longitudinal direction in sequence. The matrix section 1 is an aerosol matrix, including various continuous forms of matrices, not limited to geometric forms and arrangement modes, including multiple thin sheets, multiple hemp ropes, multiple bundles of fibers, multiple stems, single sponges, single blocks of porous shapes, single tube curls, etc. It can also be classified according to the forms of ordered tobacco shreds, disordered tobacco shreds, herbal pastes, herbal powders, etc., all of which are included in the aerosol matrix described in the present invention.

[0033] The electromagnetic atomization cartridge also includes a peripheral metal paper 4, which is wound around the outside of the matrix section 1, the cooling section 2 and the filter section 3 to form a columnar cartridge. After winding and bonding, the metal paper forms a cigarette tube. The number of windings of the cigarette tube depends on the thickness of the metal paper 4. For thinner metal paper, one or more layers can be wound, and for thicker metal paper, only one layer can be wound. Both methods are expected to form a cigarette tube with sufficient strength.

[0034] The metal paper 4 is composed of a low-weight cigarette paper 401 and a ferromagnetic metal foil 402 . After the cigarette is formed, the portion of the metal paper 4 containing the ferromagnetic metal foil 402 is correspondingly wound on the substrate segment 1 .

[0035] This structural design constructs an electromagnetic atomization cartridge for a circumferential heating mode, and its key features are: (1) a metal paper 4 partially laminated with a ferromagnetic metal foil 402 is used to roll the cigarette to construct a cigarette tube; (2) an ultra-thin annular ferromagnetic metal foil 402 is used as a heating receptor, which can be coupled with a high-frequency magnetic field when used in an electromagnetic smoking device; (3) this heating mode implements circumferential heating from the inside of the cartridge itself, and the heat originates from the inside of the cartridge, i.e., the ferromagnetic metal foil 402 arranged on the inner side of the cigarette tube wall, but acts on the circumferential side of the matrix segment 1.

[0036] The aforementioned low gram weight is a relative concept, representing a certain numerical range. In engineering practice, it is adjusted according to experimental results. In this invention, low gram weight paper is defined as paper with a gram weight of 20-60 g / m 2The thickness of the ferromagnetic metal foil 402 is set between 0.003-0.03mm. In this example, the two are partially laminated in a single layer, and the thickness at the laminated part is between 0.023-0.083mm (the thickness of the adhesive layer is not taken into account this time), and the thickness of the paper is still retained at the unlaminated part. The metal paper 4 in this thickness range and the partially laminated one is suitable for parallel flat rolling and bonding process, and is closed and overlapped on the periphery of the columnar cigarette bomb to form a thin-walled cigarette tube.

[0037] In one implementation, the ferromagnetic metal foil 402 adopts a single layer structure of a single alloy or single metal material to form a single heating receptor, and its Curie temperature is usually between 300-600°C, which is just suitable for low-temperature heating of aerosol products to achieve effective heating and produce rich aerosols.

[0038] For example, a special Fe-Ni-Zr alloy with iron, nickel and zirconium as main raw materials is prepared into a ferromagnetic metal foil 402 with a thickness of 0.03 mm, and then mixed with 25 g / m 2 The hemp pulp-based cigarette paper of gram weight is partially single-layered and then cut into a suitable size as the metal paper 4 for covering the aforementioned cigarette cartridge component. After the cigarette is formed, the strong magnetic metal foil 402 is constructed as a ring-shaped foil single heating susceptor, and its Curie temperature is in the range of 300-600°C. The weight percentage distribution of this iron-nickel-zirconium-based special alloy is 2.00-35.00% iron, 60.00-90.00% nickel, and 0.40-10.00% zirconium. The single alloy heating susceptor formed based on this alloy has a low initial magnetic permeability at room temperature (20°C), not higher than 20,000 Gauss / Oersted, and the preferred range is between 2,000-10,000 Gauss / Oersted. Such material properties will not cause drastic changes in thermal and magnetic physical quantities during temperature changes, which is not conducive to setting anti-counterfeiting identification and control windows. Its initial magnetic permeability shows a peak characteristic as the temperature increases, that is, it has a behavior characteristic of first increasing and then decreasing. After reaching a stable working temperature, the magnetic field still continues to have a heating function to achieve stable operation. The peak characteristic can be a single-peak characteristic curve or a double-peak characteristic curve. The stable working temperature of the heating sensor is on the right side of the peak and close to the nearest peak.

[0039] For example, 1J50 soft magnetic alloy material is prepared into a strong magnetic metal foil 402 with a thickness of 0.015 mm, and then 2 The hemp pulp straw pulp mixed cigarette paper with a certain weight is partially single-layered and then cut into appropriate sizes to prepare the metal paper 4 for winding the aforementioned cigarette cartridge components, wherein 1J50 is finally constructed into a ring-shaped foil single heating receptor with a Curie temperature of about 450°C.

[0040] For example, pure nickel (Ni) single metal material is prepared into a foil material with a thickness of 0.025 mm, which is used for similar purposes as mentioned above and constructed into a ring-shaped foil single heating sensor, and its Curie temperature is about 354°C.

[0041] In one implementation, the ferromagnetic metal foil 402 is a multi-layer structure formed by a composite of multiple alloy materials.

[0042] For example, a first heating susceptor composed of a first material (aluminum, iron or iron alloy) and a second heating susceptor composed of a second material (nickel or nickel alloy) are closely physically contacted (by electroplating, deposition or welding) to form a composite heating susceptor component, wherein the first heating susceptor has a first Curie temperature and the second heating susceptor has a second Curie temperature. Due to the close physical contact, the first and second heating susceptor materials have the same temperature when heated. The first heating susceptor material that can be optimized for the heating of the substrate segment 1 can have a first Curie temperature that is higher than any predetermined maximum heating temperature. Once the composite heating susceptor has reached the second Curie temperature, the magnetic properties of the second heating susceptor material change. At the second Curie temperature, the second heating susceptor material reversibly changes from a ferromagnetic phase to a paramagnetic phase. This phase change of the second heating susceptor material can be detected during the induction heating of the substrate segment 1 without physical contact with the second heating susceptor material. The detection of the phase change can allow the control of the heating of the substrate segment 1. For example, the induction heating can be automatically stopped when a phase change associated with the second Curie temperature is detected. Thus, overheating of the substrate segment 1 can be avoided, even if the first heating susceptor material, which is primarily responsible for the heating of the substrate segment 1, does not have a Curie temperature or a first Curie temperature that is higher than the maximum desired heating temperature. After the inductive heating has stopped, the heating susceptor cools down until it reaches a temperature that is lower than the second Curie temperature. At this point the second heating susceptor material regains its ferromagnetic properties again. This phase change can be detected without contact with the second heating susceptor material and the inductive heating can then be started again. Thus, the inductive heating of the substrate segment 1 can be repeatedly started and stopped by the inductive heating device.

[0043] For example, pure nickel (Ni) is compounded with iron-chromium-aluminum-Kanthal alloy to prepare a foil material with a thickness of 0.02 mm, which has strong magnetism and is cut into appropriate sizes for similar purposes as mentioned above, ultimately forming a ring-shaped foil composite heating sensor component, wherein the Curie temperature of nickel is 354°C, while the Curie temperature of iron-chromium-aluminum-Kanthal alloy is 1,000°C.

[0044] like Figure 2As shown, cigarette paper 401 and ferromagnetic metal foil 402 are partially and single-sidedly compounded to form metal paper 4, which is finally wound into an external cigarette tube. Specifically, in order to optimize the winding process and reduce the step height at the bonding overlap, the single-layer thickness of the cigarette paper is between 0.02-0.08 mm, and the ferromagnetic metal foil 402 is fixedly bonded to the cigarette paper 401 by an adhesive. After the metal paper 4 is wound and formed, after the ferromagnetic metal foil 402 surrounds the matrix segment 1, the overlapping area with the matrix segment 1 is not less than 70% compared to its side surface area, preferably more than 75%, so as to achieve higher efficiency heating, such as 85%. After the ferromagnetic metal foil 402 is wound around the matrix segment 1, it is in direct contact with its side, which can achieve large-area and rapid heat transfer in the subsequent heating process.

[0045] Since the adhesive is in direct contact with the ferromagnetic metal foil 402, and the ferromagnetic metal foil 402 may reach a high temperature of more than 400°C during the heating process, the adhesive must meet two key requirements: high temperature resistance and food grade. The high temperature resistance type requires the adhesive to not release harmful substances at a high temperature of 400°C, while the food grade requirement ensures its safety. Adhesives that meet these composite conditions include silane coupling agent modified adhesives, polysiloxane modified adhesives or high temperature epoxy resins. In the composite process, the amount of adhesive used should be minimized, because the composite paper does not require high bonding strength.

[0046] The cigarette paper 401 contains a flame retardant. Conventional cigarette paper is usually composed of cellulose (mainly derived from hemp pulp, wood pulp or straw pulp), calcium carbonate and a combustion aid (such as potassium citrate or sodium citrate). However, this conventional cigarette paper is not suitable for heat-not-burn applications. In the present invention, a modification is made by adding,

[0047] (1) Flame retardant ingredients: Flame retardants such as phosphorus, halogen, boron and inorganic elements are added to inhibit the burning of cigarette paper 401 and reduce the release of harmful substances and odors.

[0048] (2) Nicotine component: Adding nicotine or nicotine salt into the cigarette paper 401 can not only provide a certain amount of nicotine release, but also buffer the thermal decomposition process of cellulose, thereby reducing the generation of harmful substances.

[0049] In order to verify the feasibility of coupling between the annular foil heating susceptor 402 and the high-frequency alternating magnetic field generated by the electromagnetic smoking device, the present invention has conducted a simulation. The coupling effect has been simulated using COMSOL Multiphysics software, and the magnetic flux density distribution is shown in FIG. Figure 3 and 4 As shown, Figure 4 The arc length corresponds to Figure 3In this simulation, the magnetic excitation coil is a solenoid coil, the annular foil heating receptor 402 formed by the metal paper 4 is arranged in the coil, and a current of 2A is applied, and the resonant frequency of the heating circuit is 5MHz.

[0050] The results show that Figure 3 The distribution of magnetic flux in the annular foil heating sensor 402 is shown in FIG. 4 . It can be seen that a strong magnetic flux appears in the heating sensor 402 , which can reach up to 0.29 T (Tesla). The magnetic flux distribution of the annular foil heating sensor 402 along the arc length direction is shown in FIG. Figure 4 It can be seen that the magnetic flux density in most areas on the side is between 0.18-0.29T, and the distribution is relatively concentrated. Figure 3 and Figure 4 It can be found that the position of the circumferentially distributed annular foil heating receptor 402 in the present invention is very close to the inner side of the coil, which can form a strong electromagnetic induction coupling, indicating that the application possibility of the circumferentially heated electromagnetic atomization cartridge is relatively high.

[0051] The electromagnetic atomization cartridge of the present invention can achieve the following technical benefits: (1) Heating efficiency: Optimize the structure of the cartridge, perform circumferential heating from the inside of the cartridge, directly heat the aerosol matrix, reduce heat loss, and improve heating efficiency, so as to improve the smoke quality and user taste; (2) Heating uniformity: Through reasonable heating mode design, ensure that the aerosol matrix is ​​heated evenly, avoid local overheating or insufficient heating, so as to provide a consistent and stable heating effect; (3) Compatibility: Consider compatibility with smoking devices of different heating types, such as resistance heating type and electromagnetic induction heating type, to expand the scope of application and market competitiveness of the cartridge; (4) Reliability: Avoid deformation, leakage or other hidden dangers of the cartridge, improve product reliability, and ensure user experience.

[0052] Embodiment 2

[0053] like Figure 5 As shown, this embodiment is different from another embodiment in which the ferromagnetic metal foil 402 and the cigarette paper 401 are partially and single-sidedly compounded in the first embodiment, in which a thinner layer of tobacco paper 403 is compounded between the two to form a three-layer metal paper 4 with a "sandwich" structure. After the metal paper is rolled into a cigarette tube, the ferromagnetic metal foil 402 is located in the inner layer and contacts the matrix segment 1, the tobacco paper 403 is located in the middle layer, and the cigarette paper 401 is located in the outer layer, which is ordinary cigarette paper and does not contain tobacco components. With this structural design, when the ferromagnetic metal foil 402 is heated, the tobacco paper 403 can also be carbonized to release a small amount of aerosol containing nicotine, and at the same time, it has a certain slowing effect on the further transfer of heat to the cigarette paper 402, which is conducive to controlling the overheating of the cigarette paper and preventing the generation of a burnt smell.

[0054] Based on this embodiment, the weight and heat changes of the three-layer metal paper during heating were examined by experimental thermal analysis, and the test was carried out in the range of 25-370°C at a speed of 10°C / min using thermogravimetric analysis (TGA) and differential scanning calorimetry (DSC).

[0055] Figure 6 This is the TGA curve of the three-layer metal paper 4 sample in this embodiment. It can be seen that as the temperature rises, the sample begins to lose weight. When the temperature reaches 90-100°C, the mass begins to stabilize, and the weight loss accounts for a small proportion of 2.91%, indicating that the weight loss in this temperature range is mainly due to the volatilization of water in the cigarette paper 401 and the tobacco paper 403; as the temperature further increases, starting from 210°C, the weight loss continues, and the weight loss is significant when it reaches 300°C. When it exceeds 350°C, the weight loss is 19.17%, indicating that within this temperature range, the cigarette paper 401 undergoes partial thermal decomposition, the tobacco in the tobacco paper 403 is carbonized, and some components volatilize. Generally, the temperature range of 300-350°C corresponds to the temperature of the heating sensor 402 in the circumferential electromagnetic heating application.

[0056] Figure 7 This is the DSC curve of the three-layer metal paper 4 sample in this embodiment. It can be seen that when it rises to 90-100℃, there is an obvious endothermic peak, indicating that an obvious phase change occurs in this temperature range; in the temperature range of 150-300℃, the curve is in a smooth and straight state; from 300℃, the phase change endothermic phenomenon begins to appear again, reaching a peak at about 360℃, indicating that at this temperature, an obvious phase change occurs again. The thermal behavior reflected by the DSC curve corresponds to the standard weight loss behavior in TGA, and the two are consistent.

[0057] During the use of the cigarette cartridge, the cigarette tube will inevitably be heated, causing the moisture, volatile substances in the modified cigarette paper and some components of the adhesive to volatilize and release. These volatiles will affect the taste of smoking and bring potential safety risks. In order to minimize the release of volatiles, on the one hand, it is necessary to strictly control the moisture and volatile content in the paper and reduce the amount of adhesive; on the other hand, this is an unavoidable situation when smoking cigarette cartridges. In order to minimize the release of these volatile substances, on the one hand, it is necessary to control the moisture and volatile content in the paper and reduce the amount of glue, and on the other hand, it is necessary to optimize the temperature control strategy of the cigarette tube to reduce its degree of heat.

[0058] The manufacturing method of the cigarette cartridge in this embodiment mainly includes: aerosol matrix segment molding, metal paper composite molding, and cigarette cartridge component coaxial winding molding. Specifically,

[0059] S1: winding the aerosol matrix substrate and cutting it into columnar matrix segments 1, or molding the aerosol matrix substrate into columnar matrix segments 1;

[0060] S2: partially compounding the ferromagnetic metal foil 402 with the cigarette paper 401 to form the metal paper 4, or partially compounding the ferromagnetic metal foil 402 with the tobacco paper 403 and the cigarette paper 401 to form the metal paper 4;

[0061] S3: The metal paper 4 is wound onto the outer side of the coaxially connected matrix segment 1, cooling segment 2 and filter segment 3 to form an electromagnetic atomization cartridge, wherein the strong magnetic metal foil 402 is located on the inner wall of the cigarette tube, corresponding to the matrix segment 1.

[0062] In the preparation process of the metal paper 4, in order to ensure high-quality composite materials, the cleanliness of the cigarette paper 401, tobacco paper 403 and ferromagnetic metal foil 402 must be strictly controlled, and key process parameters such as pressure, tension, temperature and speed must be accurately adjusted. It is worth noting that the present invention adopts local composite technology, that is, the area of ​​the ferromagnetic metal foil 402 is smaller than the area of ​​the cigarette paper 401, and continuous composite is performed only in specific areas. This is because, in terms of functional requirements, only the tube wall area corresponding to the matrix segment 1 needs metal foil, while other areas do not need this material.

[0063] Compared with the existing electromagnetic induction central heating technology, the contact area between the heating receptor and the aerosol matrix in the electromagnetic induction circumferential heating mode of the present invention is significantly increased, thereby improving the overall carbonization rate. Taking the columnar aerosol matrix as an example, let its diameter be D and its height be H. In the central heating mode, the maximum contact area S between the thick sheet heating receptor buried at the axis position and the aerosol matrix is 中 =2DH, which is twice the area of ​​the thick sheet heating susceptor. In the circumferential heating mode, the maximum contact area S between the annular foil heating susceptor 402 disposed at the side and the aerosol matrix is 周 =πDH, where π is approximately 3.14. Obviously, S 周 About S 中 1.5 times of.

[0064] In order to improve the heating and carbonization effect of the aerosol matrix, sufficient thermal contact area must be ensured. In the present invention, the coverage rate of the contact area between the annular foil heating susceptor 402 and the aerosol matrix column relative to the side surface area of ​​the column is set to be not less than 70%, preferably not less than 85%.

[0065] Embodiment 3

[0066] In order to further verify the influence of strongly magnetic metal foil on the inductance of the coil system in electromagnetic smoking tools, the signal feedback of the heating sensor containing strongly magnetic metal foil to the coil was analyzed.

[0067] Generally, the circuit system of an electromagnetic smoking device can identify one or more changes in physical quantities mapped by changes in inductance. Through a preset target condition threshold or criterion, the electromagnetic smoking device can preliminarily identify whether there is a legitimate heating receptor entering the effective area of ​​the coil size, or determine whether a legitimate heating receptor has left. Based on this, the electromagnetic smoking device can start a responsive program, such as starting heating or power-off protection. In order to achieve sensitive signal capture and reasonable subsequent processing, the present invention sets the range of inductance changes of the system caused by the insertion of metal paper into the coil of the electromagnetic smoking device at room temperature to between 1-30nH as one of the target conditions for anti-counterfeiting identification. Those outside this range will be judged as invalid heating receptors, and the system will quickly start a protection countermeasure program.

[0068] The above physical quantities include characteristic parameters related to the magnetism or temperature of the heating receptor, such as temperature, magnetic flux, magnetic resistance, impedance, capacitance, current, voltage, and frequency. By setting multiple relevant target conditions, the system can monitor the influence of the receptor on these physical quantities during operation, further perform anti-counterfeiting identification of electromagnetic atomization cartridges, and use this information for operating temperature regulation and recording of the number of puffs.

[0069] In the experiment of this embodiment, two kinds of strong magnetic metal foils A and B were selected. A is a single material 4J36 iron-nickel-cobalt alloy, and B is a composite material composed of nickel, copper and stainless steel 440C. Each metal foil is prepared into two thicknesses of 0.01mm and 0.025mm. The metal foil is compounded with cigarette paper to prepare metal paper, and then the metal paper is parallel wound and bonded into a cigarette tube, wherein the size of the annular foil heating sensor formed is: outer diameter 7mm, height 12mm. The test frequency is set to 1MHz or 5MHz. Without any metal inserted, the starting inductance of the coil corresponding to the frequency of 1MHz and 5MHz is 88nH and 92nH respectively. Subsequently, cigarette tubes containing metal foils of different types and thicknesses are inserted into the coil respectively, and the corresponding inductance changes are measured at two frequencies. The results are shown in Table 1.

[0070] Table 1: Data on the effect of annular foil heating susceptor on coil inductance and related parameters

[0071]

[0072]

[0073] It can be seen that as the thickness of the metal foil increases, the change in inductance increases accordingly, but this corresponding relationship is nonlinear. It can be seen that the present invention has a wide range of use conditions and can be applied to different electromagnetic smoking devices. It only needs to make corresponding configuration options when setting up the device at the factory.

[0074] Embodiment 4

[0075] Corresponding to the inner structural layout of the first embodiment, in this embodiment, the ferromagnetic metal foil 402 is wound around the outer side of the cigarette paper 401 for partial single-sided lamination, so that the metal paper 4 is finally wound into an outer cigarette tube, such as Figure 8 As shown, the thickness of a single layer of cigarette paper is between 0.02-0.08 mm, and the strong magnetic metal foil 402 is fixedly combined with the cigarette paper 401 by an adhesive. The advantage is that the precision requirement of the winding process is lower, and similar heating effect can also be achieved.

[0076] In the description of the present invention, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", "clockwise", "counterclockwise" and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the referred device or element must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as limiting the present invention.

[0077] The above shows and describes the basic principles, main features and advantages of the present invention. Those skilled in the art should understand that the present invention is not limited by the above embodiments. The above embodiments and descriptions are only preferred examples of the present invention and are not intended to limit the present invention. Without departing from the spirit and scope of the present invention, the present invention may have various changes and improvements, which fall within the scope of the present invention. The scope of protection of the present invention is defined by the attached claims and their equivalents.

Claims

1. An electromagnetic atomization cigarette cartridge containing magnetic metal paper, characterized in that: It includes a substrate section, a cooling section, and a filter section which are coaxially connected in sequence along the longitudinal direction; it also includes metal paper which is wound around the outside of the substrate section, the cooling section, and the filter section to form a columnar cigarette cartridge, wherein the metal paper is partially composited with a strong magnetic metal foil and cigarette paper; the metal paper is at least partially wound around the substrate section.

2. The electromagnetic atomization cigarette cartridge containing magnetic metal paper according to claim 1, characterized in that: The ferromagnetic metal foil is a single metal or a single alloy material and is configured as a single-layer structure.

3. The electromagnetic atomization cigarette cartridge containing magnetic metal paper according to claim 1, characterized in that: The ferromagnetic metal foil is a composite metal material and is configured as a multi-layer structure.

4. The electromagnetic atomization cigarette cartridge containing magnetic metal paper according to claim 1, characterized in that: The single layer thickness of the cigarette paper is 0.02-0.08 mm.

5. The electromagnetic atomization cigarette cartridge containing magnetic metal paper according to claim 1, characterized in that: The single layer thickness of the ferromagnetic metal foil is 0.003-0.03 mm.

6. The electromagnetic atomization cigarette cartridge containing magnetic metal paper according to claim 1, characterized in that: The metal paper contains flame retardant and / or nicotine components.

7. The electromagnetic atomization cigarette cartridge containing magnetic metal paper according to claim 1, characterized in that: After the metal paper is wound on the matrix section, the overlapping area of ​​the ferromagnetic metal foil and the matrix section is not less than 70% of the side surface area.

8. The electromagnetic atomization cigarette cartridge containing magnetic metal paper according to claim 1, characterized in that: After the metal paper is wound around the substrate segment, the ferromagnetic metal foil is located on the inner side of the smoke tube close to the substrate segment.

9. The electromagnetic atomization cigarette cartridge containing magnetic metal paper according to claim 1, characterized in that: There is no magnetic heating receptor inside the matrix segment.

10. A method for manufacturing an electromagnetic atomization cigarette cartridge containing magnetic metal paper as claimed in any one of claims 1 to 9, characterized in that: The method comprises, S1: rolling the aerosol matrix substrate and cutting it into columnar matrix segments, or molding the aerosol matrix substrate into columnar matrix segments; S2: partially compounding the ferromagnetic metal foil with cigarette paper to form metal paper, or partially compounding the ferromagnetic metal foil with tobacco paper or cigarette paper to form metal paper; S3: The metal paper is wound onto the outer side surfaces of the coaxially connected matrix section, cooling section and filter section to form an electromagnetic atomization cartridge, wherein the strong magnetic metal foil is located on the inner wall of the cigarette tube, corresponding to the matrix section.

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