Preparation method of oil guiding cotton and atomizer for electronic cigarette

Abstract

The present invention provides a method for preparing an oil-conducting cotton, comprising the following steps: printing a conductive paste on the surface of an oil-conducting cloth, and then curing the conductive paste so that the conductive paste adheres to the oil-conducting cloth; after the conductive paste on the oil-conducting cloth is cured, injecting an electrode paste onto the oil-conducting cloth, the electrode paste being in conductive contact with the conductive paste, and then curing the electrode paste so that the electrode paste adheres to the oil-conducting cloth, thereby obtaining an oil-conducting cotton with a heating function; wherein, the position where the electrode paste adheres to the oil-conducting cloth serves as the electrode of the oil-conducting cotton. Through this preparation method, an oil-conducting cotton with a heating function can be prepared, the heating net is omitted, the structure and process are simple, and it is suitable for large-scale mass production. The present invention also provides an atomizer for an electronic cigarette.

Description

Technical Field

[0001] The present invention relates to the technical field of electronic cigarettes, and in particular to a method for preparing a wicking cotton and an atomizer for an electronic cigarette. Background Art

[0002] An aerosol generating device, also known as a virtual cigarette, an electronic cigarette, a vape pen, etc., is mainly used to simulate the feeling of smoking without affecting health for smoking cessation or replacing cigarettes.

[0003] The atomizer of an electronic cigarette is the core component of the electronic cigarette, and the heating component is the core component of the atomizer. Among them, the heating element in the heating component is the core component of electrothermal conversion, and its main function is to heat the e-liquid (e-juice) to generate aerosol. At present, electronic cigarettes generally use a wicking cloth as the wicking cotton, and the wicking cloth is attached to the heating mesh; during use, the wicking cloth absorbs the e-liquid from the reservoir cotton and then guides the e-liquid to the heating mesh. The heating mesh heats up to atomize the e-liquid, and then the wicking cloth absorbs the e-liquid from the reservoir cotton again to replenish and continue atomizing. Since this method requires the heating mesh and the wicking cloth to be closely attached, if not attached, it is easy to cause oil shortage and dry burning, resulting in a burnt smell problem (and during long-term use, the wicking cloth is prone to partial detachment from the heating mesh), and at the same time, this method can only atomize at the part where the wicking cloth contacts the heating mesh, and the atomization efficiency is limited. Summary of the Invention

[0004] The purpose of the present invention is to provide a method for preparing a wicking cotton and an atomizer for an electronic cigarette, which can prepare a wicking cotton with a heating function, eliminating the heating mesh, with a simple structure and process, and suitable for large-scale mass production.

[0005] The present invention provides a method for preparing a wicking cotton, including the following steps:

[0006] Print a conductive paste on the surface of the wicking cloth, and then perform a curing treatment on the conductive paste to make the conductive paste adhere to the wicking cloth;

[0007] After the conductive paste on the wicking cloth is cured, inject an electrode paste on the wicking cloth. The electrode paste is in conductive contact with the conductive paste, and then perform a curing treatment on the electrode paste to make the electrode paste adhere to the wicking cloth, thereby obtaining a wicking cotton with a heating function; wherein, the position where the electrode paste adheres to the wicking cloth is used as the electrode of the wicking cotton.

[0008] In a feasible manner, after printing the conductive paste on the surface of the wicking cloth, a part of the conductive paste adheres to the surface of the wicking cloth, and another part penetrates into the wicking cloth, so that the entire wicking cloth has a conductive heating function.

[0009] In one feasible way, after printing the conductive paste on the surface of the oil guiding cloth, the conductive paste adheres to the surface of the oil guiding cloth, thereby forming a conductive layer on the surface of the oil guiding cloth.

[0010] In one feasible way, the conductive paste is printed on one side or opposite sides of the surface of the oil guiding cloth, thereby forming the conductive layer on one side or opposite sides of the surface of the oil guiding cloth.

[0011] In one feasible way, the electrode paste is injected at the edge position of the oil guiding cloth, thereby forming the electrode of the oil guiding cotton at the edge position of the oil guiding cloth.

[0012] In one feasible way, the electrode paste is injected at the edge positions of opposite sides of the oil guiding cloth, thereby forming the electrodes at opposite ends of the oil guiding cotton.

[0013] In one feasible way, the oil guiding cotton is formed by stacking multiple layers of the oil guiding cloth, and the electrode paste is simultaneously injected at the edge positions of the multiple layers of the oil guiding cloth, and the edge positions of the multiple layers of the oil guiding cloth jointly form the electrode of the oil guiding cotton.

[0014] In one feasible way, the specific steps of simultaneously injecting the electrode paste at the edge positions of multiple layers of the oil guiding cloth include:

[0015] Simultaneously immerse the edge positions of multiple layers of the oil guiding cloth in the electrode paste and soak for a period of time, so that the electrode paste completely penetrates into the edge positions of multiple layers of the oil guiding cloth.

[0016] In one feasible way, the oil guiding cloth is non-woven fabric.

[0017] The present invention also provides an atomizer for an electronic cigarette, which includes an oil guiding cotton, and the oil guiding cotton is made by using the preparation method of the oil guiding cotton described above; the oil guiding cotton includes at least one layer of oil guiding cloth, and a first conductive material is provided on the surface and / or inside of the oil guiding cloth, so that the oil guiding cloth has a conductive heating function; a second conductive material is provided at the edge position of the oil guiding cloth, and the second conductive material is in conductive contact with the first conductive material, and the edge position of the oil guiding cloth provided with the second conductive material serves as the electrode of the oil guiding cotton.

[0018] In one feasible way, the first conductive material is provided on both the surface and inside of the oil guiding cloth, so that the whole oil guiding cloth has a conductive heating function.

[0019] In one feasible way, the first conductive material is disposed on the surface of the oil guiding cloth, and the first conductive material on the surface of the oil guiding cloth forms a conductive layer.

[0020] In an implementable manner, the second conductive material is provided at the edge positions on both opposite sides of the oil guiding cloth, so that electrodes are formed at both opposite ends of the oil guiding cotton, and the electrodes at both opposite ends of the oil guiding cotton serve as the positive electrode and the negative electrode respectively.

[0021] In an implementable manner, the number of the oil guiding cloths is multiple layers, and the multiple layers of oil guiding cloths are stacked up and down. The edge positions of the multiple layers of oil guiding cloths are electrically connected in sequence, and the edge positions of the multiple layers of oil guiding cloths jointly form the electrodes of the oil guiding cotton after being stacked.

[0022] In an implementable manner, the atomizer for electronic cigarette further includes a housing and an oil storage cavity, and the oil guiding cotton and the oil storage cavity are both arranged in the housing; an oil outlet hole is provided at the bottom of the oil storage cavity, and the oil guiding cotton is located below the oil storage cavity and corresponds to the oil outlet hole.

[0023] The preparation method of the oil guiding cotton provided by the present invention enables the oil guiding cloth to have a conductive heating function by printing conductive paste on the surface of the oil guiding cloth; meanwhile, an electrode paste is injected onto the oil guiding cloth to form an electrode on the oil guiding cloth. By this method, an oil guiding cotton with a heating function can be prepared, that is, the oil guiding cotton integrates an oil guiding function and a conductive heating function, omitting the heating mesh and the assembly step of the oil guiding cotton and the heating mesh, avoiding the phenomenon of burnt smell caused by the non-fitting of the oil guiding cotton and the heating mesh, and at the same time reducing the suction resistance, which is beneficial to the user's suction. Moreover, the oil guiding cotton with a heating function can absorb oil as a whole and perform heating atomization as a whole, with high atomization efficiency and complete atomization. At the same time, the overall structure of the oil guiding cotton with a heating function is soft, can be curled, and is easy to be shaped with a special-shaped smoking device, thus facilitating assembly. The preparation process of the oil guiding cotton with a heating function is simple and suitable for large-scale mass production. Description of the Drawings

[0024] Figure 1 It is a schematic structural diagram of an atomizer for electronic cigarette in an embodiment of the present invention.

[0025] Figure 2 It is Figure 1 a cross-sectional schematic diagram of

[0026] Figure 3 It is Figure 2 an enlarged schematic diagram of the structure of the oil guiding cotton in

[0027] Figure 4 It is a cross-sectional schematic diagram of an atomizer for electronic cigarette in another embodiment of the present invention.

[0028] Figure 5 It is Figure 4 an enlarged schematic diagram of the structure of the oil guiding cotton in

[0029] Figures 6a to 6dThis is a schematic diagram of the manufacturing process of the oil guiding cotton in the embodiments of the present invention. Detailed implementation manners

[0030] The following will further describe in detail the specific implementation manners of the present invention in conjunction with the accompanying drawings and embodiments. The following embodiments are used to illustrate the present invention, but are not used to limit the scope of the present invention.

[0031] The terms "first", "second", "third", "fourth", etc. (if any) in the description and claims of the present invention are used to distinguish similar objects, and do not necessarily describe a specific order or sequence.

[0032] The orientation terms such as "upper", "lower", "left", "right", "front", "rear", "top", "bottom", etc. (if any) involved in the description and claims of the present invention are defined based on the positions of the structures in the accompanying drawings and the positions relative to each other, only for the sake of clarity and convenience in expressing the technical solution. It should be understood that the use of orientation terms should not limit the scope of protection claimed by the present invention.

[0033] Figure 1 This is a schematic diagram of the structure of the atomizer for electronic cigarettes in the embodiments of the present invention. Figure 2 is Figure 1 a schematic cross-sectional view of Figure 3 is Figure 2 a schematic enlarged view of the structure of the oil guiding cotton in Figures 6a to 6d This is a schematic diagram of the manufacturing process of the oil guiding cotton in the embodiments of the present invention. As Figures 1 to 3 and Figures 6a to 6d shown, the preparation method of the oil guiding cotton provided by the embodiments of the present invention includes the following steps:

[0034] S10: As Figure 6a shown, provide the oil guiding cloth 11;

[0035] S20: As Figure 6b shown, print the conductive paste on the surface of the oil guiding cloth 11, and then cure the conductive paste to make the conductive paste adhere to the oil guiding cloth 11, so that the oil guiding cloth 11 has the function of conductive heating;

[0036] S30: As Figure 6d shown, after the conductive paste on the oil guiding cloth 11 is cured, inject the electrode paste on the oil guiding cloth 11. The electrode paste makes conductive contact with the conductive paste, and then cure the electrode paste to make the electrode paste adhere to the oil guiding cloth 11, that is, the oil guiding cotton 1 with the heating function is obtained; wherein, the position where the electrode paste adheres to the oil guiding cloth 11 is used as the electrode 12 of the oil guiding cotton 1.

[0037] Specifically, for the preparation method of the oil-guiding cotton provided in this embodiment, by printing conductive paste on the surface of the oil-guiding cloth 11, the oil-guiding cloth 11 is enabled to have the function of conductive heating; at the same time, by injecting electrode paste onto the oil-guiding cloth 11, electrodes 12 are formed on the oil-guiding cloth 11. Through this method, the oil-guiding cotton 1 with a heating function can be prepared, that is, the oil-guiding cotton 1 integrates the functions of oil guiding and conductive heating, eliminating the heating mesh and the assembly steps of the oil-guiding cotton 1 and the heating mesh, avoiding the phenomenon of burnt smell caused by the non-fitting of the oil-guiding cotton 1 and the heating mesh, and at the same time reducing the draw resistance (since there is no need to use a heating mesh and smoke is directly generated on the oil-guiding cotton 1, the draw resistance is reduced), which is beneficial to the user's suction. Moreover, the oil-guiding cotton 1 with a heating function can absorb oil as a whole and heat and atomize as a whole, with high atomization efficiency and complete atomization. At the same time, the overall structure of the oil-guiding cotton 1 with a heating function is soft, can be curled, and is easily shaped with a special-shaped smoking device, thus facilitating assembly. The preparation process of the oil-guiding cotton 1 with a heating function is simple and suitable for large-scale mass production.

[0038] As an implementation manner, in the above step S20, when curing the conductive paste, after printing the conductive paste on the surface of the oil-guiding cloth 11, the oil-guiding cloth 11 can be placed at room temperature for curing for about 12 hours.

[0039] As an implementation manner, in the above step S30, when curing the electrode paste, after injecting the electrode paste onto the oil-guiding cloth 11, the oil-guiding cloth 11 can be first placed at room temperature for curing for about 4 hours, and then the oil-guiding cloth 11 can be placed in an environment of 120 °C for continuous curing for about 2 hours.

[0040] As Figure 3 shown, as an implementation manner, in the above step S20, after printing the conductive paste on the surface of the oil-guiding cloth 11, a part of the conductive paste adheres to the surface of the oil-guiding cloth 11, and the other part penetrates into the oil-guiding cloth 11, so that the whole oil-guiding cloth 11 (including the surface and the inside of the oil-guiding cloth 11) has the function of conductive heating.

[0041] As Figure 4 and Figure 5 shown, as another implementation manner, in the above step S20, after printing the conductive paste on the surface of the oil-guiding cloth 11, the conductive paste adheres to the surface of the oil-guiding cloth 11, so as to form a conductive layer 111 on the surface of the oil-guiding cloth 11, that is, the surface of the oil-guiding cloth 11 has the function of conductive heating. The conductive paste is printed on one side or the opposite two sides of the surface of the oil-guiding cloth 11, so as to form a conductive layer 111 on one side or the opposite two sides of the surface of the oil-guiding cloth 11.

[0042] As Figure 3 and Figure 6dAs shown, as an implementation manner, in the above step S30, the electrode paste is injected at the edge position of the oil guide cloth 11, so that the electrode 12 of the oil guide cotton 1 is formed at the edge position of the oil guide cloth 11.

[0043] As Figure 3 and Figure 6d shown, as an implementation manner, the electrode paste is injected at the edge positions on both opposite sides of the oil guide cloth 11, so that the opposite ends of the oil guide cotton 1 are both formed with electrodes 12.

[0044] As Figure 3 and Figures 6c to 6d shown, as an implementation manner, the oil guide cotton 1 is formed by stacking multiple layers of oil guide cloth 11 with conductive heating functions. In the above step S30, before injecting the electrode paste at the edge position of the oil guide cloth 11, first stack the multiple layers of oil guide cloth 11 printed with conductive paste together, and then inject the electrode paste at the edge positions of the multiple layers of oil guide cloth 11 simultaneously. The edge positions of the multiple layers of oil guide cloth 11 are electrically connected through the injected electrode paste, and the edge positions of the multiple layers of oil guide cloth 11 together form the electrode 12 of the oil guide cotton 1.

[0045] Specifically, forming the oil guide cotton 1 by stacking multiple layers of oil guide cloth 11 can improve the heating efficiency of the oil guide cotton 1. At the same time, during production, since the multiple layers of oil guide cloth 11 printed with conductive paste are first stacked together, and then the electrode paste is injected at the edge positions of the multiple layers of oil guide cloth 11 simultaneously, not only the operation steps are simplified, and there is no need to inject the electrode paste into the multiple layers of oil guide cloth 11 separately, but also the multiple layers of oil guide cloth 11 have good electrical conductivity.

[0046] As an implementation manner, the specific steps of simultaneously injecting the electrode paste at the edge positions of the multiple layers of oil guide cloth 11 include:

[0047] Clamp the middle position of the multiple layers of oil guide cloth 11 with clips, and then immerse the edge positions of the multiple layers of oil guide cloth 11 in the electrode paste simultaneously and soak for a period of time, so that the electrode paste completely penetrates into the edge positions of the multiple layers of oil guide cloth 11. That is, in this embodiment, the immersion method is used to inject the electrode paste on the oil guide cloth 11, which can ensure that the electrode paste completely immerses into the oil guide cloth 11, thereby ensuring that the electrode 12 formed at the edge position of the oil guide cloth 11 has good electrical conductivity, and at the same time can ensure the conductive contact between the electrode paste and the conductive paste.

[0048] As an implementation manner, the composition of the conductive paste includes whisker carbon nanotube powder (the whisker carbon nanotube powder is ultra-high purity whisker carbon nanotube powder with a purity greater than or equal to 95%), graphite powder, silicate, ethanol, dispersant, defoamer, and water reducing agent; among them, the dispersant can be at least one of BYK series dispersants (BYK series dispersants are products under BYK Chemie GmbH in Germany and can be directly purchased on the market), ammonium polycarboxylate, the defoamer can be at least one of polydimethylsiloxane, polyoxypropylene glycerol ether, and polyoxypropylene polyoxyethylene glycerol ether, and the water reducing agent can be polycarboxylic acid. The electrode paste is at least one of silver paste, platinum paste, and gold paste; preferably, the electrode paste is silver paste with a silver content exceeding 80%. Through the above material combination, each part of the oil guiding cloth 11 has an appropriate resistance, and the oil guiding cloth 11 forms a structure with a high resistance at the middle position and low resistances at both side edge positions (the resistance at the middle position of the oil guiding cloth 11 is higher than the resistance at both side positions of the oil guiding cloth 11), that is, the resistance at the middle position of the oil guiding cloth 11 is high, and sufficient heat can be generated after being energized, and the resistances at both side positions of the oil guiding cloth 11 are low, which is convenient for the electrical connection between the electrodes 12 on both sides of the oil guiding cloth 11 and the external circuit.

[0049] As an implementation manner, the particle size of the whisker carbon nanotube powder is 70 - 150 nanometers, and the mesh number of the graphite powder is 800 - 1250 meshes.

[0050] As an implementation manner, the material of the oil guiding cloth 11 is non-woven fabric. Of course, in other embodiments, the oil guiding cloth 11 can also adopt other materials.

[0051] As Figures 1 to 3 shown, an atomizer for an electronic cigarette provided by an embodiment of the present invention further includes an oil guiding cotton 1, and the oil guiding cotton 1 is made by using the above preparation method of the oil guiding cotton. The oil guiding cotton 1 includes at least one layer of oil guiding cloth 11, and a first conductive material (the first conductive material is formed after the conductive paste is dried and cured) is provided on the surface and / or inside of the oil guiding cloth 11, so that the oil guiding cloth 11 has a conductive heating function; a second conductive material (the second conductive material is formed after the electrode paste is dried and cured) is provided at the edge position of the oil guiding cloth 11, the second conductive material is in conductive contact with the first conductive material, and the edge position of the oil guiding cloth 11 provided with the second conductive material serves as the electrode 12 of the oil guiding cotton 1.

[0052] As Figure 3 shown, as an implementation manner, the first conductive material is provided on both the surface and inside of the oil guiding cloth 11, so that the oil guiding cloth 11 as a whole has a conductive heating function.

[0053] As Figure 4 and Figure 5As shown in the figure, as another implementation, the first conductive material is disposed on the surface of the oil guide cloth 11, and the first conductive material on the surface of the oil guide cloth 11 forms a conductive layer 111, so that the surface of the oil guide cloth 11 has a conductive heating function.

[0054] As Figure 3 shown in the figure, as an implementation, second conductive materials are provided at the edge positions on both opposite sides of the oil guide cloth 11, so that electrodes 12 are formed at both opposite ends of the oil guide cotton 1. The electrodes 12 at both opposite ends of the oil guide cotton 1 serve as the positive electrode and the negative electrode respectively, and the positive electrode and the negative electrode are respectively used to connect the positive and negative electrodes of a power supply (not shown in the figure).

[0055] As Figure 3 shown in the figure, as an implementation, the number of the oil guide cloths 11 is multiple layers, and the multiple layers of oil guide cloths 11 are stacked up and down. The edge positions of the multiple layers of oil guide cloths 11 are electrically connected in sequence, and the edge positions of the multiple layers of oil guide cloths 11 together form the electrode 12 of the oil guide cotton 1 after being stacked.

[0056] As Figure 3 shown in the figure, as an implementation, the atomizer for electronic cigarette further includes a housing 2, an oil storage cavity 21 and a mouthpiece 3. The oil guide cotton 1 and the oil storage cavity 21 are both disposed in the housing 2 (the oil storage cavity 21 can be an integral structure with the housing 2, that is, the oil storage cavity 21 is a part of the housing 2; the oil storage cavity 21 and the housing 2 can also be a split structure, that is, the oil storage cavity 21 is a separate component). An oil outlet hole 211 is provided at the bottom of the oil storage cavity 21, and the number of the oil outlet holes 211 is multiple. The multiple oil outlet holes 211 are arranged at intervals (to facilitate the uniform dripping of the e-liquid onto the oil guide cotton 1 through the multiple oil outlet holes 211), and the oil guide cotton 1 is located below the oil storage cavity 21 and is arranged corresponding to the oil outlet holes 211. The mouthpiece 3 communicates with the inner cavity of the housing 2.

[0057] Specifically, during use, after the electrodes 12 on both sides of the oil guide cotton 1 are energized, the oil guide cotton 1 generates heat. The e-liquid stored in the oil storage cavity 21 drips onto the oil guide cotton 1 through the oil outlet holes 211. The e-liquid is atomized into smoke after being heated by the oil guide cotton 1, and the atomized smoke flows from the inner cavity of the housing 2 into the mouthpiece 3 for the user to inhale. Therefore, the atomizer for electronic cigarette in this embodiment does not require a heating mesh and an oil storage cotton, has a simple structure, high heating efficiency and lower cost.

[0058] As Figure 3 shown in the figure, as an implementation, a silica gel gasket 22 is further provided in the housing 2. The silica gel gasket 22 is disposed between the oil guide cotton 1 and the oil storage cavity 21, and the silica gel gasket 22 is arranged corresponding to the electrodes 12 on the oil guide cotton 1, so as to have a gap between the oil guide cotton 1 and the oil storage cavity 21, thereby facilitating the timely discharge and dissipation of the smoke generated on the oil guide cotton 1.

[0059] As Figure 3As shown, as an implementation manner, a metal conductor 23 and an electrical connector 24 are further disposed in the housing 2. The metal conductor 23 is in conductive contact with the electrode 12 on the oil guide cotton 1, the electrical connector 24 is in conductive contact with the metal conductor 23, and the electrical connector 24 is further connected to an external power supply to realize the electrical connection between the oil guide cotton 1 and the power supply.

[0060] As Figure 3 shown, as an implementation manner, the numbers of the silicone gaskets 22, the metal conductors 23 and the electrical connectors 24 are all two respectively. The two silicone gaskets 22, the two metal conductors 23 and the two electrical connectors 24 are respectively arranged corresponding to the two electrodes 12 on the oil guide cotton 1.

[0061] The preparation method of the oil guide cotton provided by the embodiment of the present invention enables the oil guide cloth 11 to have a conductive heating function by printing conductive paste on the surface of the oil guide cloth 11. At the same time, by injecting electrode paste at the edge position of the oil guide cloth 11, the electrode 12 is formed at the edge position of the oil guide cloth 11. Through this method, the oil guide cotton 1 with a heating function can be prepared, that is, the oil guide cotton 1 integrates the oil guiding function and the conductive heating function, omitting the heating mesh and the assembly step of the oil guide cotton 1 and the heating mesh, avoiding the phenomenon of burnt smell caused by the non-fitting of the oil guide cotton 1 and the heating mesh, and at the same time reducing the suction resistance, which is beneficial to the user's suction. Moreover, the oil guide cotton 1 with a heating function can absorb oil as a whole and perform heating atomization as a whole, with high atomization efficiency and complete atomization. At the same time, the overall structure of the oil guide cotton 1 with a heating function is soft, can be curled, and is easy to be shaped with a special-shaped smoking device, thus facilitating assembly. The preparation process of the oil guide cotton 1 with a heating function is simple and suitable for large-scale mass production.

[0062] Embodiment

[0063] The preparation method of the oil guide cotton provided by this embodiment includes the following steps:

[0064] 1. Prepare conductive paste, and proportion the ingredients according to the following formula:

[0065] Ultra-high purity whisker carbon nanotube powder: 25 parts, with a particle size of 75 - 150 nanometers;

[0066] Graphite powder: 30 parts, with a mesh number of 800 - 1250 meshes;

[0067] Silicate: 15 parts;

[0068] Ethanol: 26 parts;

[0069] Dispersant (BYK series): 2 parts;

[0070] Defoaming agent: polydimethylsiloxane, 1.5 parts;

[0071] Water reducing agent: polycarboxylic acid, 0.5 part;

[0072] The above materials are fully mixed to obtain a conductive paste.

[0073] 2. Use a 400-mesh screen to screen-print the conductive paste prepared above on the surface of the oil-conducting cloth 11 (the oil-conducting cloth 11 is made of non-woven fabric), and the conductive paste penetrates into the oil-conducting cloth 11; overlap 5 layers of oil-conducting cloth 11 printed with conductive paste, and then cure at room temperature for 12 hours; after the conductive paste on the oil-conducting cloth 11 is cured, clamp the middle position of the multi-layer oil-conducting cloth 11 with a clip, and then immerse the edge positions of the multi-layer oil-conducting cloth 11 in the electrode slurry (the electrode slurry uses silver paste with a silver content of more than 80%) at the same time and soak for 1 hour, so that the electrode slurry completely penetrates the edge positions of the multi-layer oil-conducting cloth 11, cure at room temperature for 4 hours, and then fix the whole with a clip and continue to cure at 120°C for 2 hours to obtain an oil-conducting cotton 1 with a heating function; wherein, the edge positions of the multi-layer oil-conducting cloth 11 together form the electrode 12 of the oil-conducting cotton 1.

[0074] 3. The metal conductor 23 and the electrical connector 24 of the ejector structure are used to support the electrode 12 on the oil-conducting cotton 1, and the oil-conducting cotton 1 is installed in the smoking device. The power supply of the smoking device is a 3.7V lithium battery. The suction resistance of the smoking device is measured to be 180 Pa, and no burnt smell is found.

[0075] Comparative Example 1

[0076] Five layers of oil-conducting cloth were stacked together, and then a stainless steel heating net was attached to the surface of the oil-conducting cloth, and then installed in a smoking device, and a 3.7V lithium battery was used as the power source of the smoking device. The measured suction resistance of the smoking device was 260 Pa. By comparing the embodiment with comparative example 1, it is found that the oil-conducting cotton 1 prepared in the embodiment can reduce the suction resistance.

[0077] Comparative Example 2

[0078] Five layers of oil-conducting cloth are stacked together, and then a stainless steel heating net is attached to the surface of the oil-conducting cloth, with a gap of 0.1 mm between the stainless steel heating net and the oil-conducting cloth, and then the oil-conducting cloth is installed in a smoking device, and a 3.7V lithium battery is used as the power source of the smoking device. The oil-conducting cotton 1 prepared in the embodiment can avoid the occurrence of the burnt smell phenomenon because it integrates the oil-conducting function and the conductive heating function.

[0079] The above are only specific embodiments of the present invention, but the protection scope of the present invention is not limited thereto. Any person skilled in the art who is familiar with the technical field can easily think of changes or substitutions within the technical scope disclosed by the present invention, which 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 preparation method of oil-conducting cotton, characterized in that, It includes the following steps: Print conductive paste on the surface of the oil guiding cloth, and then cure the conductive paste so that the conductive paste adheres to the oil guiding cloth. Part of the conductive paste adheres to the surface of the oil guiding cloth, and the other part penetrates into the oil guiding cloth; After the conductive paste on the oil guiding cloth is cured, inject electrode paste on the oil guiding cloth. The electrode paste soaks into the oil guiding cloth, and the electrode paste is in conductive contact with the conductive paste. Then cure the electrode paste so that the electrode paste adheres to the oil guiding cloth, and the oil guiding cotton with a heating function is obtained. Wherein, the position where the electrode paste adheres to the oil guiding cloth is used as the electrode of the oil guiding cotton. The oil guiding cotton is formed by stacking multiple layers of the oil guiding cloth, and the electrode paste is injected at the edge positions of the multiple layers of the oil guiding cloth at the same time. The edge positions of the multiple layers of the oil guiding cloth jointly form the electrode of the oil guiding cotton; Wherein, the specific steps of injecting the electrode paste at the edge positions of the multiple layers of the oil guiding cloth at the same time include: Immerse the edge positions of the multiple layers of the oil guiding cloth in the electrode paste at the same time and soak for a period of time so that the electrode paste completely penetrates into the edge positions of the multiple layers of the oil guiding cloth.

2. The preparation method of the oil guide cotton according to claim 1, characterized in that, The electrode paste is injected at the edge positions on both opposite sides of the oil guiding cloth, so that electrodes are formed at both opposite ends of the oil guiding cotton.

3. The preparation method of the oil guide cotton according to claim 1, characterized in that, The oil guiding cloth is non-woven fabric.

4. The preparation method of the oil guide cotton according to claim 1, characterized in that, The composition components of the conductive paste include whisker carbon nanotube powder, graphite powder, silicate, ethanol, dispersant, defoaming agent and water reducing agent.

5. An atomizer for an electronic cigarette, comprising oil guiding cotton, characterized in that, The oil guiding cotton is made by using the preparation method of the oil guiding cotton according to any one of claims 1-4. The oil guiding cotton includes at least one layer of oil guiding cloth. The first conductive material is provided on the surface and inside of the oil guiding cloth, so that the oil guiding cloth has a conductive heating function. The first conductive material is formed after the conductive paste is dried and cured. The second conductive material is provided at the edge position of the oil guiding cloth. The second conductive material is formed after the electrode paste is dried and cured. The second conductive material is in conductive contact with the first conductive material. The edge position of the oil guiding cloth provided with the second conductive material is used as the electrode of the oil guiding cotton. The number of the oil guiding cloths is multiple layers, and the multiple layers of the oil guiding cloths are stacked up and down. The edge positions of the multiple layers of the oil guiding cloths are electrically connected in sequence. The edge positions of the multiple layers of the oil guiding cloths jointly form the electrode of the oil guiding cotton after being stacked; 6. The atomizer for electronic cigarette according to claim 5, wherein, The second conductive material is provided at the edge positions on both opposite sides of the oil guiding cloth, so that electrodes are formed at both opposite ends of the oil guiding cotton. The electrodes at both opposite ends of the oil guiding cotton are respectively used as the positive electrode and the negative electrode.

7. The atomizer for electronic cigarette according to claim 5, wherein, The atomizer for electronic cigarette further includes a housing and an oil storage cavity. The oil guiding cotton and the oil storage cavity are both arranged in the housing. An oil outlet hole is provided at the bottom of the oil storage cavity. The oil guiding cotton is located below the oil storage cavity and corresponds to the oil outlet hole.

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