A liquid guiding body and a method for producing the same

Abstract

The application discloses a liquid guide body and a preparation method thereof, and relates to the technical field of atomization, wherein the liquid guide body comprises a one-way permeation layer, a liquid storage layer and a temperature-resistant core layer; the one-way permeation layer is provided with oppositely arranged first and second surfaces, the surface energy of the first surface is lower than that of the second surface of the one-way permeation layer; the second surface is sequentially connected with the liquid storage layer and the temperature-resistant core layer; and the one-way permeation layer is used for unidirectionally guiding external fluid to the liquid storage layer for storage. In the application process of the liquid guide body, the one-way permeation layer can stably transmit the external fluid to the liquid storage layer for storage based on the surface energy difference, meanwhile, the temporary liquid storage property of the liquid storage layer enhances the liquid storage capacity of the liquid guide body, and the temperature-resistant property of the temperature-resistant core layer can avoid defects such as paste core and taste variation of the liquid guide body caused by atomization core heating atomization, so that the atomization stability is enhanced, and the user experience is improved as a whole.

Description

TECHNICAL FIELD

[0001] The present application relates to the field of atomization technology, in particular to a liquid guide and a preparation method thereof. BACKGROUND

[0002] The atomization core is an important component in the electronic atomizer, and the liquid guide as the liquid guide in the atomization core, the performance stability is directly related to the smoking taste and service life of the electronic atomizer. The traditional liquid guide has poor liquid guide stability, and is prone to insufficient liquid supply. In the process of suction, there are defects such as core paste and taste variation, which leads to poor user experience. SUMMARY

[0003] The present application provides a liquid guide and a preparation method thereof, which is used to improve the technical problem that the traditional liquid guide easily leads to poor user experience in the use process of the electronic atomizer.

[0004] The first aspect of the present application provides a liquid guide, comprising: a one-way permeable layer, a liquid storage layer and a temperature-resistant core layer;

[0005] The one-way permeable layer has a first surface and a second surface arranged oppositely, and the surface energy of the first surface is lower than that of the second surface.

[0006] The second surface is sequentially connected with the liquid storage layer and the temperature-resistant core layer.

[0007] The one-way permeable layer is used for one-way guiding the external fluid to the liquid storage layer for storage.

[0008] Optionally, the one-way permeable layer comprises at least two permeable fiber units arranged in sequence, and the surface energy of the two permeable fiber units is different, thereby forming a one-way permeable layer with two surfaces having different surface energies.

[0009] Optionally, one of the permeable fiber units is prepared from a first raw material, and the other permeable fiber unit is prepared from a second raw material.

[0010] Optionally, both of the permeable fiber units are prepared from a first raw material.

[0011] The densities of the two permeable fiber units are different.

[0012] Optionally, both of the permeable fiber units are prepared from a mixture of a first raw material and a second raw material.

[0013] The weight ratio of the first raw material to the second raw material in the two permeable fiber units is different.

[0014] Optionally, the weight ratio of the first raw material to the second raw material is 1:19-19:1.

[0015] Optionally, the first raw material and the second raw material are selected from any one of natural cellulose fiber, natural protein fiber, renewable fiber and synthetic fiber.

[0016] Optionally, the number of the unidirectional permeable layers is multiple, and the multiple unidirectional permeable layers are stacked in sequence.

[0017] The surface energy of the multiple unidirectional permeable layers gradually increases in the direction close to the liquid storage layer.

[0018] Optionally, the liquid storage layer is prepared from a third raw material, and the third raw material is any one or a plurality of natural cellulose fiber, natural protein fiber, renewable fiber and synthetic fiber.

[0019] Optionally, the liquid storage layer is a porous fiber web.

[0020] Optionally, the temperature-resistant core layer is prepared from a fourth raw material, and the fourth raw material is any one or a plurality of natural cellulose fiber, renewable fiber, synthetic fiber and special fiber.

[0021] Optionally, the thickness of the unidirectional permeable layer and the thickness of the temperature-resistant core layer are both less than the thickness of the liquid storage layer.

[0022] The grammage of the unidirectional permeable layer and the grammage of the temperature-resistant core layer are both less than the grammage of the liquid storage layer.

[0023] Optionally, the total thickness of the unidirectional permeable layer is 0.1-1.5 mm, and the total grammage is 15-200 gsm.

[0024] The total thickness of the liquid storage layer is 0.5-5 mm, and the total grammage is 30-280 gsm.

[0025] The total thickness of the temperature-resistant core layer is 0.2-1.5 mm, and the total grammage is 15-200 gsm.

[0026] The second aspect of the present application provides a preparation method of a liquid guide body, comprising:

[0027] Respectively based on the first raw material and the second raw material, webbing treatment is performed to obtain two permeable fiber units;

[0028] After the two permeable fiber units are stacked in sequence, reinforcement treatment is performed to obtain a unidirectional permeable layer.

[0029] Webbing treatment is performed on a third raw material to obtain a liquid storage layer.

[0030] Based on a fourth raw material, webbing treatment and reinforcement treatment are sequentially performed to obtain a temperature-resistant core layer.

[0031] The unidirectional permeation layer, the liquid storage layer and the temperature-resistant core layer are stacked in sequence and subjected to bonding treatment to obtain the liquid guide body.

[0032] From the above technical solutions, the present application has the following advantages:

[0033] The above technical solutions of the present application provide a liquid guide body, which comprises a unidirectional permeation layer, a liquid storage layer and a temperature-resistant core layer; wherein the unidirectional permeation layer has oppositely arranged first and second surfaces, and the surface energy of the first surface is lower than that of the second surface; the second surface is sequentially connected with the liquid storage layer and the temperature-resistant core layer; the unidirectional permeation layer is used for unidirectionally guiding external fluid to the liquid storage layer for storage. In the application process of the liquid guide body, the unidirectional permeation layer is used to unidirectionally guide the external fluid to the liquid storage layer, the liquid storage layer stores the external fluid and transmits it to the temperature-resistant core layer, and the temperature-resistant core layer supplies the external fluid to the atomization core for atomization. On the one hand, the unidirectional permeation layer can stably transmit the external fluid to the liquid storage layer for storage based on the difference in surface energy, and at the same time, the temporary liquid storage property of the liquid storage layer enhances the liquid storage capacity of the liquid guide body. On the other hand, the temperature-resistant property of the temperature-resistant core layer can avoid defects such as paste core and taste variation of the liquid guide body caused by heating and atomization of the atomization core. The liquid storage layer can guide the atomization liquid to diffuse in the liquid storage layer based on the strong liquid storage capacity, so as to reduce the back seepage of the atomization liquid. The unidirectional permeation layer can also prevent the back seepage of the external fluid caused by heat transfer based on the unidirectional permeation property, thereby enhancing the atomization stability and improving the user experience. BRIEF DESCRIPTION OF DRAWINGS

[0034] In order to more clearly illustrate the technical solutions in the embodiments of the present application or the prior art, the following will briefly introduce the drawings needed to be used in the embodiments or prior art description. Obviously, the drawings in the following description are only some embodiments of the present application, and those skilled in the art can also obtain other drawings according to these drawings without any creative labor.

[0035] Figure 1 A structural schematic diagram of a liquid guide body provided by the embodiment of the present application is provided.

[0036] Figure 2 A structural schematic diagram of a bonding mark of the liquid guide body provided by the embodiment of the present application is provided.

[0037] In the figure: 1, unidirectional permeation layer; 2, liquid storage layer; 3, temperature-resistant core layer; 4, bonding mark. DETAILED DESCRIPTION

[0038] The embodiment of the present application provides a liquid guide body and a preparation method thereof, which are used to improve the technical problem that the conventional liquid guide body easily causes poor user experience in the use process of the electronic atomizer.

[0039] In order to make the application purposes, features and advantages of the present application more obvious and easy to understand, the technical solutions in the embodiments of the present application will be described clearly and completely below in conjunction with the drawings of the embodiments of the present application. Obviously, the embodiments described below are only a part of the embodiments of the present application, rather than all the embodiments. Based on the embodiments in the present application, all other embodiments obtained by those skilled in the art without creative work fall within the scope of the present application.

[0040] Figure 1 A structural diagram of a liquid guide provided by the first embodiment of the present application.

[0041] Referring to Figure 1 The liquid guide disclosed in the embodiment comprises a one-way permeable layer 1, a liquid storage layer 2 and a temperature-resistant core layer 3.

[0042] The one-way permeable layer 1 has oppositely arranged first and second surfaces, and the surface energy of the first surface is lower than that of the second surface.

[0043] The second surface is sequentially connected with the liquid storage layer 2 and the temperature-resistant core layer 3.

[0044] The one-way permeable layer 1 is used to guide external fluid to the liquid storage layer 2 for storage.

[0045] In the embodiment, the one-way permeable layer 1 comprises oppositely arranged first and second surfaces, which can be understood as upper and lower surfaces, left and right surfaces or front and back surfaces, i.e., the one-way permeable layer 1 has two opposite surfaces, so that when the external fluid such as atomized liquid passes through the first and second surfaces in sequence, it will pass through the one-way permeable layer 1 from a certain direction.

[0046] In the embodiment, the first and second surfaces are arranged to have different surface energies, so that the one-way permeable layer 1 formed by this structure has a surface energy difference between the two surfaces. The greater the surface energy, the smaller the contact angle of the atomized liquid on the surface, and thus the stronger the adsorption capacity of the atomized liquid. Under the action of the surface energy difference, the atomized liquid in the one-way permeable layer 1 will show a trend of flowing from the area with lower surface energy to the area with higher surface energy. Under this structure, after the atomized liquid wets and penetrates from the side of the surface with relatively lower surface energy, it can flow freely after being guided to the side of the surface with relatively higher surface energy, so as to fully spread, flow and penetrate, so that the one-way permeable layer 1 has the one-way permeation property.

[0047] In the specific structure of the embodiment, the first side of the liquid storage layer 2 is connected with the second surface of the one-way permeable layer 1 having a higher surface energy, and the second side is connected with the temperature-resistant core layer 3. The liquid storage layer 2 can capture the atomized liquid permeated by the one-way permeable layer 1 for short-time storage, and transmit the atomized liquid to the temperature-resistant core layer 3 for atomization according to the atomization requirement.

[0048] In the present embodiment, one side of the temperature-resistant core layer 3 is connected with the liquid storage layer 2, and the other side of the temperature-resistant core layer 3 is directly in contact with the atomization core. The temperature-resistant core layer 3 is made of a material having a certain temperature resistance, which can prevent carbonization or decomposition of the material during the process of guiding the atomized liquid of the liquid storage layer 2 to the atomization core for atomization, thereby avoiding problems such as variation of the taste of the atomized liquid after atomization, carrying of harmful substances, etc.

[0049] Based on the overall structure design of the present embodiment, in the atomization and heating process of the electronic atomizer, the atomized liquid is unidirectionally guided to the liquid storage layer 2 by the one-way permeable layer 1, the liquid storage layer 2 stores and transmits the atomized liquid to the temperature-resistant core layer 3, and the temperature-resistant core layer 3 supplies the atomized liquid to the atomization core for atomization, thereby improving the user experience. On the one hand, during the transmission of the atomized liquid, the one-way permeable layer 1 can stably transmit the atomized liquid to the liquid storage layer 2 for storage based on the surface energy difference, and meanwhile, the temporary liquid storage property of the liquid storage layer 2 enhances the liquid storage capacity of the liquid guide, which is beneficial to guarantee the stability of the atomization effect. Specifically, for example, when the demand for the atomized liquid of the electronic atomizer decreases significantly, or even there is no demand for the atomized liquid for a certain period of time, the atomized liquid in the liquid storage layer 2 can be continuously and slowly supplied to the atomization core through the temperature-resistant core layer 3, which helps to keep the atomization core in a wet state, and the electronic atomizer can keep the state of immediately responding to the atomization requirement without waiting for the atomization core to reabsorb moisture, thereby ensuring seamless connection of the atomization effect. On the other hand, during atomization, the temperature-resistant property of the temperature-resistant core layer 3 can avoid defects such as paste core of the liquid guide, variation of the taste, etc. caused by heating and atomization of the atomization core. In addition, since the flowability of the heated atomized liquid is enhanced, it is easy to flow from the atomization core along the temperature-resistant core layer 3 towards the one-way permeable layer 1. The liquid storage layer 2 can guide the atomized liquid to diffuse in the liquid storage layer 2 based on the strong liquid storage capacity, so as to achieve the effect of reducing the back permeation of the atomized liquid. The one-way permeable layer 1 can prevent the back permeation of the atomized liquid caused by heat transfer based on the one-way permeation property, thereby enhancing the atomization stability.

[0050] In a more specific embodiment, the structure of the one-way permeable layer 1 having a surface energy difference can be realized by the following manner. The one-way permeable layer 1 comprises at least two permeable fiber units arranged in sequence, and the surface energy of the two permeable fiber units is different, thereby forming the one-way permeable layer having two surfaces with different surface energies.

[0051] In a specific embodiment of the present embodiment, one of the permeable fiber units is made of a first raw material, and the other permeable fiber unit is made of a second raw material.

[0052] In another specific embodiment of the present embodiment, both of the two said permeable fiber units are prepared from the first raw material; the densities of the two said permeable fiber units are different.

[0053] In another specific embodiment of the present embodiment, both of the two said permeable fiber units are prepared from the mixture of the first raw material and the second raw material; the weight ratio of the first raw material to the second raw material in the two said permeable fiber units is different. Preferably, the weight ratio of the first raw material to the second raw material is 1:19~19:1.

[0054] In the present embodiment, the unidirectional permeable layer 1 comprises at least two stacked permeable fiber units, and it can be understood that the two permeable fiber units can be connected to form an integral unidirectional permeable layer 1; in specific implementation, the two permeable fiber units can be stacked and then reinforced by one or more of needle punching, water jetting, thermal bonding, and chemical bonding processes to form a relatively stable unidirectional permeable layer 1.

[0055] The surfaces of the two permeable fiber units of the unidirectional permeable layer 1 are different in surface energy, thereby forming the unidirectional permeable layer 1 with two surfaces different in surface energy to realize the unidirectional permeation of the atomized liquid; in specific implementation, the structure of the difference in surface energy can be realized by the following ways:

[0056] One of the permeable fiber units is prepared from the first raw material, and the other permeable fiber unit is prepared from the second raw material, at this time, the first raw material and the second raw material are different in material, thereby showing different surface energies, and further making the unidirectional permeable layer 1 have the first surface and the second surface different in surface energy;

[0057] Or, both of the two said permeable fiber units are prepared from the first raw material, and the densities of the two said permeable fiber units are different, at this time, the two permeable fiber units are prepared from the same raw material but different in density distribution, and the high-density permeable fiber unit structure is more compact, and shows a relatively high surface energy compared with the low-density permeable fiber unit, thereby making the unidirectional permeable layer 1 exhibit different surface energies;

[0058] Alternatively, both of the two said permeable fiber units are prepared by mixing the first raw material and the second raw material, and the weight ratio of the first raw material to the second raw material in the two said permeable fiber units is different. In this structural design, both of the two permeable fiber units are prepared by mixing the first raw material and the second raw material to form a composite raw material, but the mixing ratio of the two raw materials in the two permeable fiber units is different, so that the composite raw material exhibits different surface energies. For example, the higher the weight ratio of the raw material with relatively high surface energy, the higher the surface energy of the composite raw material tends to exhibit. Further, at this time, the weight ratio of the first raw material to the second raw material in the permeable fiber unit can be 1:19~19:1, that is, the proportion of the first raw material and the second raw material in the permeable fiber unit is more than 5%, at this time, excellent flow rate can be achieved.

[0059] In some embodiments, the first raw material and the second raw material in the above embodiments are selected from any one of natural cellulose fiber, natural protein fiber, renewable fiber and synthetic fiber.

[0060] In some embodiments, the first raw material in the above embodiments is selected from any one of natural cellulose fiber, natural protein fiber, renewable fiber and synthetic fiber, and the second raw material is selected from a plurality of natural cellulose fiber, natural protein fiber, renewable fiber and synthetic fiber.

[0061] In some embodiments, the first raw material in the above embodiments is selected from a plurality of natural cellulose fiber, natural protein fiber, renewable fiber and synthetic fiber, and the second raw material is selected from any one of natural cellulose fiber, natural protein fiber, renewable fiber and synthetic fiber.

[0062] In some embodiments, the first raw material and the second raw material in the above embodiments are selected from a plurality of natural cellulose fiber, natural protein fiber, renewable fiber and synthetic fiber.

[0063] In the present embodiment, the first raw material and the second raw material can both use a single constituent material or a mixed fiber of a plurality of materials, as long as two permeable fiber units with different surface energies are formed by the first raw material and the second raw material, which is not limited in the present embodiment.

[0064] In a more specific embodiment, the liquid storage layer 2 is prepared from a third raw material, which is any one of natural cellulose fiber, natural protein fiber, renewable fiber and synthetic fiber, or a plurality thereof. The specific constituent material and quantity of the third raw material can be set according to the demand for the liquid storage capacity of the liquid storage layer 2 in the liquid conducting body, such as by structural cooperation between a plurality of constituent materials to exhibit better liquid storage capacity than a single constituent material.

[0065] In a more specific embodiment, the temperature-resistant core layer 3 is made of a fourth raw material, which is any one of natural cellulose fiber, renewable fiber, synthetic fiber and special fiber, or a plurality of them. The specific composition of the fourth raw material and the amount can be set according to the temperature resistance requirement of the temperature-resistant core layer 3 in the liquid guiding body, such as through reasonable selection and matching between a plurality of composition materials, which can exhibit better temperature resistance characteristics compared to a single composition material.

[0066] In some embodiments, the natural cellulose fiber in the above embodiments is one of cotton fiber, hemp fiber, coconut shell fiber, wood pulp fiber, bamboo fiber, or consists of a plurality of them.

[0067] In some embodiments, the natural protein fiber in the above embodiments is one of wool fiber and silk fiber, or consists of a plurality of them.

[0068] In some embodiments, the renewable fiber in the above embodiments is one of viscose fiber, lyocell fiber, and cuprammonium fiber, or consists of a plurality of them.

[0069] In some embodiments, the synthetic fiber in the above embodiments is one of polyethylene terephthalate (PET), polypropylene (PP), polyamide (PA), and polylactic acid (PLA), or consists of a plurality of them.

[0070] In some embodiments, the special fiber in the above embodiments is one of poly-m-phenylene isophthalamide (PMIA), polytetrafluoroethylene (PTFE), polybenzimidazole fiber (PBI), and silicate-based viscose fiber (Visil fiber), or consists of a plurality of them.

[0071] In the present embodiment, when selecting the raw materials of the one-way permeation layer 1, the liquid storage layer 2 and the temperature-resistant core layer 3, the functional characteristics of each layer need to be considered and reasonably matched to make the liquid guiding body as a whole to achieve a good application state, for example, the liquid guiding body made of PET / viscose for the one-way permeation layer 1, cuprammonium fiber for the liquid storage layer 2, and PTFE for the temperature-resistant core layer 3 has a relatively good saturated liquid absorption rate, which can be selected according to actual production needs, and is not limited here.

[0072] In a more specific embodiment, the liquid storage layer 2 is a porous fiber web made of a third raw material.

[0073] In the present embodiment, the liquid storage layer 2 adopts a fluffy porous fiber mesh structure. On the one hand, a large number of pores formed inside the liquid storage layer 2 can effectively store the atomized liquid. At the same time, the specific surface area of the liquid storage layer 2 can be greatly increased, which helps to transfer the atomized liquid faster, so that the atomizing core can quickly adapt to the change of the demand for atomized liquid when working. On the other hand, the fiber mesh structure can guide the uniform diffusion of the atomized liquid inside the liquid storage layer 2, so that the atomized liquid can be uniformly released into the atomizing core through the temperature-resistant core layer 3 for uniform heating and atomization, reducing the situation that the local atomized liquid concentration is too high due to local overheating and other factors, which is prone to backflow due to gravity, capillary action and other factors, so as to achieve the effect of inhibiting the backflow of the atomized liquid.

[0074] In a more specific embodiment, the temperature-resistant core layer 3 made of natural cellulose fiber, renewable fiber, synthetic fiber or special fiber also presents a porous structure, so as to absorb the atomized liquid from the liquid storage layer 2 and temporarily store it. At the same time, the existence of pores is beneficial to increase the contact area between the atomized liquid and the atomizing core, reduce local overheating phenomenon, improve atomization efficiency, and thus improve the user's experience.

[0075] In a more specific embodiment, the total thickness of the one-way permeable layer 1 is 0.1-1.5 mm, the total grammage is 15-200 gsm, the total thickness of the liquid storage layer 2 is 0.5-5 mm, the total grammage is 30-280 gsm, and the total thickness of the temperature-resistant core layer 3 is 0.2-1.5 mm, the total grammage is 15-200 gsm, so as to obtain a liquid guide body with a thickness of 0.8-8 mm.

[0076] In a specific embodiment of the present embodiment, under the condition that a certain production process is limited, for example, the maximum thickness of the fluffy fabric that can be realized by the spunlace process is 1.0 mm, the use thickness of each layer of the liquid guide body can be achieved by stacking multiple layers. Specifically, the number of layers of the one-way permeable layer 1 can be 1-2 layers, the number of layers of the liquid storage layer 2 can be 1-5 layers, and the number of layers of the temperature-resistant core layer 3 can be 1-3 layers. It can be understood that when the number of layers of the one-way permeable layer 1, the liquid storage layer 2 or the temperature-resistant core layer 3 is multiple, the total thickness and total thickness of the one-way permeable layer 1, the liquid storage layer 2 or the temperature-resistant core layer 3 refer to the total thickness and total thickness of all the one-way permeable layer 1, the liquid storage layer 2 or the temperature-resistant core layer 3.

[0077] In a more specific embodiment of the present embodiment, when the number of one-way permeable layers 1 is multiple layers, the multiple one-way permeable layers 1 are sequentially stacked, and the surface energy of the multiple one-way permeable layers 1 gradually increases in the direction close to the liquid storage layer 2. Specifically, taking two one-way permeable layers 1 as an example, including a first one-way permeable layer and a second one-way permeable layer, the first one-way permeable layer includes a first permeable fiber unit and a second permeable fiber unit arranged in sequence, the second one-way permeable layer includes a third permeable fiber unit and a fourth permeable fiber unit arranged in sequence, the first one-way permeable layer is connected with the third permeable fiber unit through the second permeable fiber unit, and the fourth permeable fiber unit is connected with the liquid storage layer 2. At this time, the surface energy between the first permeable fiber unit, the second permeable fiber unit, the third permeable fiber unit and the fourth permeable fiber unit gradually increases in sequence, so as to achieve the one-way liquid guiding effect.

[0078] The second embodiment of the present application provides a preparation method of a liquid guiding body, comprising:

[0079] Respectively based on the first raw material and the second raw material, a webbing treatment is performed to obtain two permeable fiber units;

[0080] After the two permeable fiber units are sequentially stacked, a reinforcing treatment is performed to obtain a one-way permeable layer;

[0081] A webbing treatment is performed on the third raw material to obtain a liquid storage layer;

[0082] Based on the fourth raw material, a webbing treatment and a reinforcing treatment are sequentially performed to obtain a temperature-resistant core layer;

[0083] The one-way permeable layer, the liquid storage layer and the temperature-resistant core layer are sequentially stacked and subjected to a bonding treatment to obtain the liquid guiding body.

[0084] In a more specific embodiment, the webbing treatment includes any one of dry webbing, wet webbing, air flow webbing and carding webbing;

[0085] The reinforcing treatment includes any one of needle punching, water jetting, thermal bonding and chemical bonding processes, or a plurality of combinations thereof.

[0086] In the present embodiment, first, the first raw material, the second raw material, the third raw material and the fourth raw material for preparing the liquid guiding body are obtained; after the first raw material and the second raw material are subjected to dry webbing, wet webbing, air flow webbing or carding webbing treatment, two permeable fiber units are formed, and the two permeable fiber units are stacked and then subjected to one or more of needle punching, water jetting, thermal bonding and chemical bonding processes for reinforcing, so as to obtain a one-way permeable layer with a total thickness of 0.1-1.5 mm and a total gram weight of 15-200 gsm;

[0087] The third raw material is processed by dry-laid, wet-laid, air-laid or carded nonwoven process to obtain a reservoir layer with a total thickness of 0.5-5 mm and a total basis weight of 30-280 gsm, which presents a fluffy porous fiber web and a non-reinforced structure;

[0088] The fourth raw material is processed by dry-laid, wet-laid, air-laid or carded nonwoven process, and then is reinforced by one or more of needle punching, water jet, thermal bonding and chemical bonding processes to obtain a temperature-resistant core layer with a total thickness of 0.2-1.5 mm and a total basis weight of 15-200 gsm;

[0089] The unidirectional permeable layer, the reservoir layer and the reservoir layer are laminated and bonded, and then are cut to obtain a liquid guide with a length of 15-100 mm, a width of 2-100 mm and a thickness of 0.8-8 mm. The length and width of the liquid guide can be set according to the structure of the electronic atomization device, and are not limited herein. In addition, in the preparation process of the liquid guide, the unidirectional permeable layer and the reservoir layer can be laminated and bonded first, and then laminated and bonded with the temperature-resistant core layer. Alternatively, the reservoir layer and the temperature-resistant core layer can be laminated and bonded first, and then laminated and bonded with the unidirectional permeable layer. Both of them can obtain a liquid guide with high liquid storage capacity.

[0090] In a more specific embodiment, the reservoir layer can be lightly reinforced to form a fluffy porous fiber web using one or several nonwoven methods. Specifically, the light reinforcement focuses on reinforcing within a necessary range, such as maximizing the fluffy porous characteristics, without excessively affecting the mechanical properties of the original material, etc. For example, lower pressure or selective partial water jet, lower needle punching density for needle punching, etc.

[0091] In a more specific embodiment, the bonding process includes any one of rolling, adhesive bonding and thermal bonding.

[0092] In the embodiment, the unidirectional permeable layer, the liquid storage layer and the temperature-resistant core layer are sequentially arranged according to the structural design, and then are tightly compressed at both ends by rolling, specifically, the rolling, bonding and compaction can be performed by using a roller with protrusions, and in the rolling process, the protrusions of the roller make the layers interweave and bond with each other to form a stable composite structure, wherein the shape and size of the protrusions of the roller and the parameters such as the pressure and speed of the rolling can be optimized and adjusted according to the production needs of the product. In addition to the rolling bonding and compaction, an adhesive can also be added to the liquid guide body for bonding, or a hot bonding method can also be used, which can achieve the effect that the liquid guide body is not easy to delaminate and delayer. The traditional liquid guide body is usually composed of 4-8 layers of spunlace non-woven fabric stacked together and then cut into a long strip-shaped multi-layer cotton by a cutter, or the adhesion between the non-woven fabrics is increased by spraying water mist for humidification. Such a traditional liquid guide body is prone to delamination and delayering defects, and compared with the traditional liquid guide body, the liquid guide body formed by the bonding treatment in the embodiment has better stability.

[0093] In one specific embodiment of the embodiment, referring to Figure 2 , one side of the unidirectional permeable layer, the liquid storage layer and the temperature-resistant core layer is provided with an adhesive mark, which is different from the commonly used non-woven fabric horizontal and vertical line identification scheme. By providing the adhesive mark with obvious identification on each layer, the different functional layers can be quickly distinguished during stacking, and the connection surface between the layers can be identified based on one side of the adhesive mark, which helps to ensure that the layers and the atomization core are connected in the correct order, reduces the possibility of misoperation, and improves the assembly efficiency. In this design, the adhesive mark can include but is not limited to graphic marks, printed characters, etc., so as to facilitate the identification of each side of each functional layer.

[0094] Based on the above-mentioned embodiments of the application, the liquid guide body samples of examples 1-13 and comparative examples 1-2 are prepared, wherein the liquid storage layer and the temperature-resistant core layer in the comparative examples are commercially available spunlace non-woven fabrics, and the saturated liquid absorption rate of the liquid guide body is tested according to GB / T 24218.6-2010 Non-woven fabric test method. Before testing, the standard atmosphere for textile humidification and testing according to GB / T 6529 is balanced for 24 hours, and the performance test results are shown in Table 1.

[0095] Table 1

[0096]

[0097] As can be seen from Table 1, in Examples 1-10, when the thickness of the unidirectional permeation layer and the thickness of the temperature-resistant core layer are both less than the thickness of the liquid storage layer, and the grammage of the unidirectional permeation layer and the grammage of the temperature-resistant core layer are both less than the grammage of the liquid storage layer, the liquid guide can obtain a relatively optimal saturated liquid absorption rate, and as shown in Example 1, the greater the proportion of the grammage of the liquid storage layer in the liquid guide, the greater the saturated liquid absorption rate that can be obtained, preferably, the proportion of the grammage of the liquid storage layer in the liquid guide is 52%-81%. It can be understood that the higher the saturated liquid absorption rate of the liquid guide, the more atomized liquid can be absorbed and stored, which helps to stabilize the liquid supply.

[0098] As can be seen from Table 1, in Example 13, the liquid storage layer of the liquid guide uses a non-reinforced structure of the fiber web, and compared with the commercially available liquid guide in Comparative Example 1, the thickness is larger, and the liquid storage capacity is obviously improved.

[0099] As can be seen from Table 1, Example 5 and Comparative Example 2 use the same material, thickness and grammage in the liquid storage layer and the temperature-resistant core layer, but the unidirectional permeation layer introduced in Example 5 does not cause a decrease in the saturated liquid absorption rate of the liquid guide, so it can prevent the back infiltration of atomized liquid while maintaining the stable liquid supply and good liquid storage capacity of the liquid guide.

[0100] The above-described examples are only used to illustrate the technical solutions of the present application, but not to limit it; although the present application has been described in detail with reference to the foregoing examples, those skilled in the art should understand that they can still modify the technical solutions recorded in the foregoing examples, or make equivalent substitutions for part of the technical features; and these modifications or substitutions do not make the essence of the corresponding technical solutions deviate from the spirit and scope of the technical solutions of the embodiments of the present application.

Claims

1. A liquid guiding body, characterized in that, The application relates to a liquid guiding body, which comprises a one-way permeation layer, a liquid storage layer and a temperature-resistant core layer. The one-way permeation layer is provided with oppositely arranged first and second surfaces, and the surface energy of the first surface is lower than that of the second surface. The second surface is sequentially connected with the liquid storage layer and the temperature-resistant core layer. The one-way permeation layer is used for unidirectionally guiding external fluid to the liquid storage layer for storage. The thickness of the one-way permeation layer and the thickness of the temperature-resistant core layer are both smaller than the thickness of the liquid storage layer. The grammage of the one-way permeation layer and the grammage of the temperature-resistant core layer are both smaller than the grammage of the liquid storage layer. The one-way permeation layer comprises at least two sequentially arranged permeation fiber units, and the surface energy of the two permeation fiber units is different, so that the one-way permeation layer has two surfaces with different surface energy.

2. The liquid guide according to claim 1, wherein One of the permeation fiber units is prepared from a first raw material, and the other permeation fiber unit is prepared from a second raw material.

3. The liquid guide according to claim 2, wherein Both of the permeation fiber units are prepared from the first raw material.

4. The liquid guide according to claim 2, wherein The densities of the two permeation fiber units are different. Both of the permeation fiber units are prepared from a mixture of the first raw material and the second raw material.

5. The liquid guide according to claim 2, wherein The weight ratio of the first raw material to the second raw material in the two permeation fiber units is different. The weight ratio of the first raw material to the second raw material is 1:19-19:

1.

6. The liquid guide according to claim 5, wherein The first raw material and the second raw material are both selected from any one of natural cellulose fiber, natural protein fiber, renewable fiber and synthetic fiber.

7. The liquid guide according to any one of claims 3 to 5, wherein The number of the one-way permeation layers is multiple, and the multiple one-way permeation layers are sequentially stacked.

8. The liquid guide according to claim 1, wherein The surface energy of the multiple one-way permeation layers gradually increases along the direction close to the liquid storage layer. The liquid storage layer is prepared from a third raw material, and the third raw material is any one or a plurality of natural cellulose fiber, natural protein fiber, renewable fiber and synthetic fiber.

9. The liquid guide according to claim 1, wherein The liquid storage layer is a porous fiber web.

10. The liquid guide according to claim 1, wherein The temperature-resistant core layer is prepared from a fourth raw material, and the fourth raw material is any one or a plurality of natural cellulose fiber, renewable fiber, synthetic fiber and special fiber.

11. The liquid guide according to claim 1, wherein The total thickness of the one-way permeation layer is 0.1-1.5 mm, and the total grammage is 15-200 gsm.

12. The liquid guide according to claim 1, wherein The total thickness of the liquid storage layer is 0.5-5 mm, and the total grammage is 30-280 gsm. The total thickness of the temperature-resistant core layer is 0.2-1.5 mm, and the total grammage is 15-200 gsm. The application also relates to a preparation method of the liquid guiding body.

13. A method of preparing a liquid guiding body as claimed in claim 1, characterized in that The two permeation fiber units are sequentially stacked and reinforced to obtain the one-way permeation layer. The third raw material is used for webbing to obtain the liquid storage layer. The fourth raw material is sequentially used for webbing and reinforcing to obtain the temperature-resistant core layer. The one-way permeation layer, the liquid storage layer and the temperature-resistant core layer are sequentially stacked and bonded to obtain the liquid guiding body. ​ ​

Images