A high-moisturizing spunlace nonwoven fabric and method thereof

Abstract

The present invention relates to a highly moisturizing spunlace nonwoven fabric, including a hydrophilic nonwoven fabric surface layer, hydrophilic fiber strands, a hydrophilic fiber net and a fiber moisturizer. The upper surface and the lower surface of the hydrophilic fiber net are both connected to a layer of hydrophilic nonwoven fabric surface layer, the fiber moisturizer is embedded in the hydrophilic fiber net, and the hydrophilic nonwoven fabric surface layer and the hydrophilic fiber net are connected by a plurality of hydrophilic fiber strands, and the hydrophilic fiber strands are distributed in a mesh structure. The preparation process includes two steps, namely, fiber net processing and classification processing. The present invention has good structural strength and toughness, and also has good moisture retention, effectively increases the use function and service life of nonwoven products, and at the same time, in the production process, effectively improves the efficient repeated recycling of production raw materials, and reduces the loss of raw materials caused by the loss of textile production raw materials, increases production costs, and effectively prevents environmental pollution caused by the loss of raw materials.

Description

Technical Field

[0001] The invention relates to a highly moisturizing spunlace nonwoven fabric and a method thereof, belonging to the technical field of textiles. Background Art

[0002] Currently, among various skin cleaning, wound cleaning and other products, non-woven fabrics with good water absorption are the most basic and have a wide range of application markets. In actual production and use, in order to improve the water absorption of non-woven fabrics, fiber raw materials with good water absorption are often used and produced through spunlace non-woven fabric production technology. Although it can meet the needs of use, on the one hand, it leads to a relatively simple structure of non-woven fabrics, which is easily limited by the performance of a single fiber raw material, so the performance and function of use are relatively simple; on the other hand, in the production process, each process needs to be equipped with independent production equipment, which makes the production process complicated. A large amount of materials and manpower are consumed in the management and operation of production equipment. At the same time, there is a lack of effective collection capacity for waste liquid, waste gas and fiber debris generated in the production process, which leads to high production costs and pollution to the production environment.

[0003] Therefore, it is necessary to develop a highly moisturizing spunlace nonwoven fabric and a production method to meet the needs of practical use. Summary of the invention

[0004] In view of the deficiencies in the prior art, the present invention provides a highly moisturizing spunlace nonwoven fabric and a production method thereof, so as to overcome the above defects and meet the needs of actual equipment operation.

[0005] In order to achieve the above object, the present invention is implemented through the following technical solutions:

[0006] A highly moisturizing spunlace nonwoven fabric comprises a hydrophilic nonwoven fabric surface layer, hydrophilic fiber strands, a hydrophilic fiber net and a fiber moisturizer, wherein the upper surface and the lower surface of the hydrophilic fiber net are both connected to a layer of hydrophilic nonwoven fabric surface layer, and the hydrophilic fiber net is at least one layer, and the hydrophilic nonwoven fabric surface layer and the hydrophilic fiber net are arranged in parallel, the fiber moisturizer is embedded in the hydrophilic fiber net, and the hydrophilic nonwoven fabric surface layer and the hydrophilic fiber net are connected by a plurality of hydrophilic fiber strands, and the hydrophilic fiber strands are distributed in a mesh structure.

[0007] Furthermore, the mesh size of the hydrophilic fiber net is 0.5-2.5 mm, and the total thickness of the hydrophilic fiber net is 0.5-1.5 times the thickness of the hydrophilic non-woven fabric surface layer.

[0008] Furthermore, the fiber moisturizing agent is any one of a solid moisture absorbent and a liquid moisture absorbent, or a mixture of the two in any proportion.

[0009] Furthermore, the hydrophilic fiber strands are cotton threads with a diameter of 0.5-1.5 mm, and the hydrophilic fiber strands adopt any one of a mesh structure and a multi-row structure parallel to the axis of the hydrophilic fiber mesh.

[0010] A green and pollution-free preparation process for a highly moisturizing spunlace nonwoven fabric, characterized in that the green and pollution-free preparation process for a highly moisturizing spunlace nonwoven fabric comprises the following steps:

[0011] S1, fiber web processing, the axis loosens and mixes the fiber raw materials and then conveys them to the combing equipment, and the hydrophilic non-woven fabric surface layer fiber web and the hydrophilic fiber web are processed by the combing equipment, and then the prepared fiber web is sprayed and pre-wetted with 1-2MPa high-pressure deionized water by the drying spray equipment, and the fiber moisturizing agent is mixed and configured at the same time, and finally the mixed and configured fiber moisturizing agent is sprayed onto the pre-wetted fiber web, and the fiber web is fully infiltrated, and the infiltrated fiber webs are classified, stored and conveyed to subsequent processing equipment;

[0012] S2, classified processing, firstly, the hydrophilic non-woven fabric surface layer blank is prepared by adopting the positive and negative hydroentanglement reinforcement process to the fiber web for the hydrophilic non-woven fabric surface layer, and then the hydrophilic non-woven fabric surface layer blank is dried by a drying device to obtain a finished hydrophilic non-woven fabric surface layer, and the hydrophilic non-woven fabric surface layer is dried by a drying spray device, and the finished hydrophilic non-woven fabric surface layer after drying is rolled up and temporarily stored; then the prepared finished hydrophilic non-woven fabric surface layer is unfolded by an unwinding device, and the hydrophilic fiber web prepared in step S1 is sprayed twice by a drying spray device at the same time, and after the moisturizer spraying is completed, the upper surface and the lower surface of the hydrophilic fiber web are respectively synthesized with the hydrophilic non-woven fabric surface layer by a textile processing equipment, and after the synthesis processing is completed, the hydrophilic fiber web and the hydrophilic non-woven fabric surface layer are reinforced and connected again by the hydrophilic fiber strands to obtain a non-woven fabric matrix, and finally the non-woven fabric matrix is ​​dried by a drying spray device and rolled up to obtain a finished non-woven fabric.

[0013] Furthermore, in the step S2, when the finished hydrophilic nonwoven fabric surface layer is connected to the hydrophilic fiber web, the surface tension of the finished hydrophilic nonwoven fabric surface layer is in the same direction as the surface tension of the hydrophilic fiber web, and the surface tension of the finished hydrophilic nonwoven fabric surface layer is 1.5-3 times the surface tension of the hydrophilic fiber web.

[0014] Further, the drying spray equipment includes a bearing frame, a liquid collecting tank, a liquid mixing tank, an atomizing spray pump, a spray frame, a horizontal driving guide rail, spray heads, a water draining mechanism, a reflux fan, a reflux port and a driving circuit. The bearing frame is a frame structure parallel to the horizontal plane, and its upper end surface is connected to the liquid collecting tank. The liquid collecting tank is a trough-shaped structure with a "U"-shaped cross section, and its axis is parallel to the horizontal plane. The spray frame is a "冂"-shaped frame structure, covering the upper end surface of the liquid collecting tank, and the lower end surface of the spray frame is slidably connected to the upper end surface of the bearing frame through a horizontal driving mechanism. A number of spray heads are provided on the lower end surface of the top of the spray frame, and a number of reflux ports are provided on the side wall of the spray frame. The axes of each spray head and reflux port form an angle of 30° - 90° with the upper end surface of the liquid collecting tank. Each spray head is connected to the atomizing spray pump through a guide pipe, the atomizing spray pump is connected to the liquid mixing tank through a guide pipe, each reflux port is connected to the reflux fan through a guide pipe, the reflux fan is connected to the bottom of the liquid collecting tank through a guide pipe, the liquid mixing tank, the atomizing spray pump and the reflux fan are all connected to the outer side surface of the bearing frame. There is at least one water draining mechanism, which is located above the liquid collecting tank and is connected to the upper end surface of the bearing frame through the spray frame. The driving circuit is connected to the outer side surface of the bearing frame and is electrically connected to the liquid collecting tank, the liquid mixing tank, the atomizing spray pump, the horizontal driving guide rail, the water draining mechanism and the reflux fan respectively.

[0015] Further, a sewage discharge port is provided at the bottom of the liquid collecting tank, a number of semiconductor refrigeration mechanisms are provided at the bottom and inner side surface of the liquid collecting tank, and an electrostatic adsorption net is further provided at the top of the liquid collecting tank. The semiconductor refrigeration mechanism and the electrostatic adsorption net are both electrically connected to the driving circuit.

[0016] Further, the water draining mechanism includes a lifting drive mechanism, sliders, water draining rollers, pressure sensors, brackets, temperature and humidity sensors, and drive motors. There are at least two lifting drive mechanisms, symmetrically distributed on both sides of the liquid collecting tank, connected to the inner side surface of the spraying frame, and each lifting drive mechanism is vertically distributed with respect to the horizontal plane. There are two brackets in total. The side surfaces of the two brackets are connected to the lifting drive mechanism through sliders and are slidably connected to the inner side surface of the spraying frame through the lifting drive mechanism. At the same time, the two brackets are parallel to each other and vertically distributed, and the brackets form an angle of 0° - 45° with the upper end surface of the liquid collecting tank. The bracket is a horizontally cross-sectioned "U"-shaped groove structure. There are at least two water draining rollers arranged in the bracket. The axis of the water draining roller is parallel to the bottom of the bracket groove and forms an angle of 30° - 90° with the axis of the bracket. At the same time, the roller surface of the water draining roller extends at least 10 mm beyond the bracket. At the same time, each water draining roller is connected to the drive motor through a transmission mechanism. The drive motor is connected to the outer side surface of the bracket. In addition, the water draining rollers between the two brackets are distributed oppositely. At least one pressure sensor and at least one temperature and humidity sensor are arranged on the roller surface of the water draining roller, and the temperature and humidity sensors and pressure sensors are evenly distributed around the axis of the water draining roller. The lifting drive mechanism, pressure sensor, temperature and humidity sensor, and drive motor are all electrically connected to the drive circuit.

[0017] Further, the bottom of the bracket groove is a grid plate structure. At the same time, a hot air blower is arranged at the bottom of the bracket groove. The axis of the hot air blower forms an angle of 10° - 90° with the upper end surface of the liquid collecting tank. In addition, the bracket and the slider are hinged through a turntable mechanism. At the same time, an inclination sensor is arranged on the bracket. At the same time, the hot air blower, turntable mechanism, and inclination sensor are all electrically connected to the drive circuit.

[0018] The present invention has good structural strength and toughness, and at the same time has good moisture retention, effectively increasing the use function and service life of the non-woven fabric product. At the same time, during the production process, it effectively improves the efficient recycling of production raw materials, prevents raw material losses caused by the loss of textile production raw materials, increases production costs, and at the same time effectively prevents environmental pollution caused by the loss of raw materials. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] The present invention will be described in detail below with reference to the drawings and specific embodiments.

[0020] Figure 1 It is a schematic partial cross-sectional structure diagram of the non-woven fabric of the present invention;

[0021] Figure 2 It is a schematic diagram of the arrangement structure of a hydrophilic fiber strand in the non-woven fabric of the present invention;

[0022] Figure 3 It is a schematic diagram of another arrangement structure of a hydrophilic fiber strand in the non-woven fabric of the present invention;

[0023] Figure 4It is a schematic diagram of the process of using the present invention;

[0024] Figure 5 This is a schematic diagram of the local structure of the drying spray equipment from a bird's-eye view;

[0025] Figure 6 It is a schematic diagram of the partial structure of the cross section of the drying spray equipment;

[0026] Figure 7 It is a schematic diagram of the local structure of the drainage mechanism;

[0027] Figure 8 It is a schematic diagram of the partial structure of the side section between the two brackets of the drainage mechanism; DETAILED DESCRIPTION

[0028] In order to make the technical means, creative features, objectives and effects achieved by the present invention easy to understand, the present invention is further explained below in conjunction with specific implementation methods.

[0029] like Figure 1-3 As shown, a highly moisturizing spunlace nonwoven fabric comprises a hydrophilic nonwoven fabric surface layer 101, hydrophilic fiber strands 102, a hydrophilic fiber web 103 and a fiber moisturizer 104, wherein the upper surface and the lower surface of the hydrophilic fiber web 103 are both connected to a layer of the hydrophilic nonwoven fabric surface layer 101, and the hydrophilic fiber web 103 has at least one layer, and the hydrophilic nonwoven fabric surface layer 101 and the hydrophilic fiber web 103 are arranged in parallel, the fiber moisturizer 104 is embedded in the hydrophilic fiber web 103, and the hydrophilic nonwoven fabric surface layer 101 and the hydrophilic fiber web 103 are connected by a plurality of hydrophilic fiber strands 102, and the hydrophilic fiber strands 102 are distributed in a mesh structure.

[0030] In this embodiment, the mesh size of the hydrophilic fiber web 103 is 0.5-2.5 mm, and the total thickness of the hydrophilic fiber web 103 is 0.5-1.5 times the thickness of the hydrophilic non-woven fabric surface layer 101 .

[0031] In this embodiment, the fiber moisturizing agent 104 is any one of a solid moisture absorbent and a liquid moisture absorbent, or a mixture of the two in any proportion.

[0032] In this embodiment, the hydrophilic fiber strands 102 are cotton threads with a diameter of 0.5-1.5 mm, and the hydrophilic fiber strands 102 adopt any one of a mesh structure and a multi-row structure parallel to the axis of the hydrophilic fiber mesh.

[0033] like Figure 4 As shown in FIG8 , a green and pollution-free preparation process for a highly moisturizing spunlace nonwoven fabric is characterized in that the green and pollution-free preparation process for a highly moisturizing spunlace nonwoven fabric comprises the following steps:

[0034] S1, fiber web processing, the axis loosens and mixes the fiber raw materials and then conveys them to the combing equipment, and the hydrophilic non-woven fabric surface layer fiber web and the hydrophilic fiber web are processed by the combing equipment, and then the prepared fiber web is sprayed and pre-wetted with 1-2MPa high-pressure deionized water by the drying spray equipment, and the fiber moisturizing agent is mixed and configured at the same time, and finally the mixed and configured fiber moisturizing agent is sprayed onto the pre-wetted fiber web, and the fiber web is fully infiltrated, and the infiltrated fiber webs are classified, stored and conveyed to subsequent processing equipment;

[0035] S2, classified processing, firstly, the hydrophilic non-woven fabric surface layer blank is prepared by adopting the positive and negative hydroentanglement reinforcement process to the fiber web for the hydrophilic non-woven fabric surface layer, and then the hydrophilic non-woven fabric surface layer blank is dried by a drying device to obtain a finished hydrophilic non-woven fabric surface layer, and the hydrophilic non-woven fabric surface layer is dried by a drying spray device, and the finished hydrophilic non-woven fabric surface layer after drying is rolled up and temporarily stored; then the prepared finished hydrophilic non-woven fabric surface layer is unfolded by an unwinding device, and the hydrophilic fiber web prepared in step S1 is sprayed twice by a drying spray device at the same time, and after the moisturizer spraying is completed, the upper surface and the lower surface of the hydrophilic fiber web are respectively synthesized with the hydrophilic non-woven fabric surface layer by a textile processing equipment, and after the synthesis processing is completed, the hydrophilic fiber web and the hydrophilic non-woven fabric surface layer are reinforced and connected again by the hydrophilic fiber strands to obtain a non-woven fabric matrix, and finally the non-woven fabric matrix is ​​dried by a drying spray device and rolled up to obtain a finished non-woven fabric.

[0036] Further optimized, in the S2 step, when the finished hydrophilic non-woven fabric surface layer is connected to the hydrophilic fiber web, the surface tension of the finished hydrophilic non-woven fabric surface layer is in the same direction as the surface tension of the hydrophilic fiber web, and the surface tension of the finished hydrophilic non-woven fabric surface layer is 1.5-3 times the surface tension of the hydrophilic fiber web.

[0037] By setting the tension, the surface quality of the hydrophilic non-woven fabric surface layer and the hydrophilic fiber web during processing can be improved. At the same time, after the processing is completed, the tension difference between the hydrophilic non-woven fabric surface layer and the hydrophilic fiber web can be utilized to achieve the shrinkage of the finished non-woven fabric within a limited volume range. While not affecting the overall structural strength and stability of the non-woven fabric, the elastic deformation ability and toughness of the non-woven fabric can be effectively improved. At the same time, the elastic deformation of the fiber can also achieve the effect of improving the water absorption performance.

[0038] Specifically, the drying and spraying equipment includes a carrying frame 1, a liquid collecting tank 2, a liquid mixing tank 3, an atomizing spray pump 4, a spray frame 5, a horizontal driving guide rail 6, spray heads 7, a water draining mechanism 8, a reflux fan 9, a reflux port 10 and a driving circuit 11. The carrying frame 1 is a frame structure parallel to the horizontal plane, and its upper end surface is connected to the liquid collecting tank 2. The liquid collecting tank 2 is a trough-shaped structure with a "U" - shaped cross - section, and its axis is parallel to the horizontal plane. The spray frame 5 is a "冂" - shaped frame structure, covering the upper end surface of the liquid collecting tank 2. The lower end surface of the spray frame 5 is slidably connected to the upper end surface of the carrying frame 1 through the horizontal driving mechanism 6. A number of spray heads 7 are arranged on the lower end surface of the top of the spray frame 5, and a number of reflux ports 10 are arranged on the side wall of the spray frame 5. The axes of each spray head 7 and reflux port 10 form an angle of 30° - 90° with the upper end surface of the liquid collecting tank 2. Each spray head 7 is connected to the atomizing spray pump 4 through a diversion pipe, the atomizing spray pump 4 is connected to the liquid mixing tank 3 through a diversion pipe, each reflux port 10 is connected to the reflux fan 9 through a diversion pipe, the reflux fan 9 is connected to the bottom of the liquid collecting tank 2 through a diversion pipe. The liquid mixing tank 3, the atomizing spray pump 4 and the reflux fan 9 are all connected to the outer side surface of the carrying frame 1. There is at least one water draining mechanism 8, which is located above the liquid collecting tank 2 and is connected to the upper end surface of the carrying frame 1 through the spray frame 5. The driving circuit 11 is connected to the outer side surface of the carrying frame 1 and is electrically connected to the liquid collecting tank 2, the liquid mixing tank 3, the atomizing spray pump 4, the horizontal driving guide rail 6, the water draining mechanism 8 and the reflux fan 9 respectively.

[0039] During operation, the non - woven fabric raw materials to be sprayed are conveyed above the liquid collecting tank and are parallel to the upper end surface of the liquid collecting tank. At the same time, each spray frame covers the non - woven fabric raw materials to be sprayed. At the same time, the non - woven fabric raw materials to be sprayed are conveyed through the water draining mechanism and then to external production equipment for subsequent processing. At the same time, liquid raw materials such as fiber moisturizing agent solution are configured in the liquid mixing tank. When the non - woven fabric raw materials to be sprayed are conveyed and pass through the spray frame, on the one hand, the liquid in the liquid mixing tank is pressurized by the atomizing spray pump and then sprayed onto the non - woven fabric raw materials to be sprayed to meet the production and processing requirements. At the same time, part of the droplets generated after spraying drip into the liquid collecting tank for collection. Another part is collected by the negative pressure air flow formed by the cooperation of the reflux fan and the reflux port and is conveyed into the liquid collecting tank, so as to achieve the collection of liquid materials, prevent environmental pollution, and at the same time, the purpose of recycling liquid materials can be realized. At the same time, when collecting the droplets by the negative pressure air flow formed by the cooperation of the reflux fan and the reflux port, fiber debris, volatile substances, etc. generated during the production process can be collected at the same time and conveyed into the liquid collecting tank, and purified by the liquid in the liquid collecting tank, further reducing the pollution caused by production activities.

[0040] Wherein, a sewage discharge port 21 is provided at the bottom of the liquid collecting tank 2, a plurality of semiconductor refrigeration mechanisms 22 are provided at the bottom and the inner side surface of the liquid collecting tank 2, and an electrostatic adsorption net 23 is further provided at the top of the liquid collecting tank. The semiconductor refrigeration mechanisms 22 and the electrostatic adsorption net 23 are both electrically connected to the drive circuit 11.

[0041] The electrostatic adsorption net provided can improve the adsorption and purification efficiency of liquid droplets and fiber debris; the semiconductor refrigeration mechanism provided can cool the liquid collecting tank and the liquid collected therein, reducing material loss and environmental pollution caused by gas volatilization and evaporation.

[0042] It should be noted that the water draining mechanism 8 includes a lifting drive mechanism 81, a slider 82, a water draining roller 83, a pressure sensor 84, a bracket 85, a temperature and humidity sensor 86, and a drive motor 87. There are at least two lifting drive mechanisms 81, symmetrically distributed on both sides of the liquid collecting tank 2 and connected to the inner side surface of the spray rack 5, and each lifting drive mechanism 81 is vertically distributed with respect to the horizontal plane. There are two brackets 85 in total. The side surfaces of the two brackets 85 are connected to the lifting drive mechanism 81 through the slider 82 and are slidably connected to the inner side surface of the spray rack 5 through the lifting drive mechanism 81. At the same time, the two brackets 85 are parallel and vertically distributed, and the bracket 85 forms an angle of 0° - 45° with the upper end surface of the liquid collecting tank 2. The bracket 85 is a transverse "U"-shaped trough-like structure. At least two water draining rollers 83 are provided inside the bracket 85. The axis of the water draining roller 83 is parallel to the bottom of the bracket 85 and forms an angle of 30° - 90° with the axis of the bracket 85. At the same time, the roller surface of the water draining roller 83 extends at least 10 mm beyond the bracket 85. At the same time, each water draining roller 83 is further connected to the drive motor 87 through a transmission mechanism. The drive motor 87 is connected to the outer side surface of the bracket 85. In addition, the water draining rollers 83 between the two brackets 85 are distributed oppositely. At least one pressure sensor 84 and at least one temperature and humidity sensor 86 are provided on the roller surface of the water draining roller 83, and the temperature and humidity sensor 86 and the pressure sensor 84 are evenly distributed around the axis of the water draining roller 83. The lifting drive mechanism 81, the pressure sensor 84, the temperature and humidity sensor 86, and the drive motor 87 are all electrically connected to the drive circuit 11.

[0043] In this embodiment, the bottom of the bracket 85 is a grid plate structure, and a hot air blower 88 is further provided at the bottom of the bracket 85. The axis of the hot air blower 88 forms an angle of 10° - 90° with the upper end surface of the liquid collecting tank 2. In addition, the bracket 85 and the slider 82 are hinged through a turntable mechanism 89. At the same time, an inclination sensor 80 is further provided on the bracket 85. The hot air blower 88, the turntable mechanism 89, and the inclination sensor 80 are all electrically connected to the drive circuit 11.

[0044] When the draining mechanism is used for draining, on the one hand, the distance between the two brackets is adjusted by the lifting drive mechanism, so that the draining rollers of the two brackets physically squeeze the non-woven fabric raw material that has completed the spraying, and the liquid in the non-woven fabric raw material is squeezed out by physical squeezing to achieve the purpose of draining; on the other hand, the non-woven fabric raw material after squeezing is dried by the set hot air blower, so as to further achieve the purpose of improving the drying effect of the non-woven fabric raw material; in addition, through squeezing, the density between the hydrophilic non-woven fabric surface layer, the hydrophilic fiber strands, and the hydrophilic fiber web can be increased, providing a structural basis for achieving water absorption and expansion in subsequent use, and improving the water absorption of the non-woven fabric in use;

[0045] The turntable mechanism can flexibly adjust the working angle of the bracket. On the one hand, it can adjust the conveying direction of the non-woven fabric raw materials; on the other hand, it can improve the efficiency of the extruded liquid returning to the collecting tank; at the same time, the pressure sensor and temperature and humidity sensor can detect the extrusion pressure of the drain roller on the non-woven fabric raw materials, and at the same time detect the amount of sweat of the non-woven fabric raw materials.

[0046] Further optimized, the lifting drive mechanism 81 is any one of a screw mechanism, a gear rack mechanism, a hydraulic column and a pneumatic column.

[0047] In this embodiment, the driving circuit 11 is a circuit system based on a programmable controller, and the driving circuit is also provided with a multi-channel voltage-stabilized power supply and a communication gateway.

[0048] The present invention has good structural strength and toughness, and also has good moisture retention, which effectively increases the service life of non-woven fabric products. At the same time, in the production process, it effectively improves the efficient repeated recycling of production raw materials, and reduces the loss of raw materials caused by the loss of textile production raw materials, increases production costs, and effectively prevents environmental pollution caused by the loss of raw materials.

[0049] It should be understood by those skilled in the art that the present invention is not limited by the above-described embodiments. The above-described embodiments and descriptions are merely illustrative of the principles of the present invention. Various changes and improvements may be made to the present invention without departing from the spirit and scope of the present invention. These changes and improvements fall within the scope of the present invention to be protected. The scope of protection of the present invention is defined by the appended claims and their equivalents.

Claims

1. A green and pollution-free preparation process for a highly moisturizing spunlace non-woven fabric, characterized in that: It includes the following steps: S1. Fiber web processing: After the fiber raw materials are loosened and mixed by the axis, they are transported to the carding equipment. Through the carding equipment, the fiber web for the hydrophilic non-woven fabric surface layer and the hydrophilic fiber web are processed. Then, the prepared fiber web is pre-wetted by spraying with high-pressure deionized water of 1-2 MPa using a drying and spraying device, and at the same time, the fiber moisturizer is mixed and configured. Finally, the mixed and configured fiber moisturizer is sprayed onto the pre-wetted fiber web, and the fiber web is fully infiltrated. The infiltrated fiber webs are classified and stored and transported to the subsequent processing equipment; S2. Classification processing: First, the fiber web for the water non-woven fabric surface layer is processed by the positive and negative spunlace reinforcement process to prepare the initial blank of the hydrophilic non-woven fabric surface layer. Then, the initial blank of the water non-woven fabric surface layer is dried by a drying device to obtain the finished hydrophilic non-woven fabric surface layer. The finished hydrophilic non-woven fabric surface layer is dried by a drying and spraying device, and the dried finished hydrophilic non-woven fabric surface layer is wound up and temporarily stored; Then, the prepared finished hydrophilic non-woven fabric surface layer is unrolled by an unrolling device and simultaneously passed through a drying and spraying device for secondary spraying and drying with the hydrophilic fiber web prepared in step S1. After the moisturizer is sprayed, the upper and lower surfaces of the hydrophilic fiber web are respectively synthesized with the hydrophilic non-woven fabric surface layer by a textile processing device, and after the synthesis processing is completed, the hydrophilic fiber web and the hydrophilic non-woven fabric surface layer are strengthened and connected by the hydrophilic fiber strands again to obtain the non-woven fabric matrix. Finally, the non-woven fabric matrix is dried by a drying and spraying device and then wound up to obtain the finished non-woven fabric; The drying and spraying device includes a bearing frame, a liquid collecting tank, a mixing tank, an atomizing spray pump, a spray frame, a horizontal driving guide rail, a spray head, a water draining mechanism, a reflux fan, a reflux port and a driving circuit. Among them, the bearing frame is a frame structure parallel to the horizontal plane, and its upper end surface is connected to the liquid collecting tank. The liquid collecting tank is a trough-shaped structure with a "U" cross-section, and its axis is parallel to the horizontal plane. The spray frame is a "冂" - shaped frame structure, covering the upper end surface of the liquid collecting tank. The lower end surface of the spray frame is slidably connected to the upper end surface of the bearing frame through a horizontal driving mechanism. The lower end surface of the top of the spray frame is provided with several spray heads, and several reflux ports are provided on the side wall of the spray frame. The axes of each spray head and reflux port form an angle of 30° - 90° with the upper end surface of the liquid collecting tank. Among them, each spray head is connected to the atomizing spray pump through a diversion pipe, the atomizing spray pump is connected to the mixing tank through a diversion pipe, each reflux port is connected to the reflux fan through a diversion pipe, the reflux fan is connected to the bottom of the liquid collecting tank through a diversion pipe, the mixing tank, the atomizing spray pump and the reflux fan are all connected to the outer side surface of the bearing frame, the water draining mechanism is at least one, located above the liquid collecting tank and connected to the upper end surface of the bearing frame through the spray frame, and the driving circuit is connected to the outer side surface of the bearing frame and is respectively electrically connected to the liquid collecting tank, the mixing tank, the atomizing spray pump, the horizontal driving guide rail, the water draining mechanism and the reflux fan; The described water draining mechanism includes a lifting drive mechanism, sliders, water draining rollers, pressure sensors, brackets, temperature and humidity sensors, and drive motors. There are at least two lifting drive mechanisms, symmetrically distributed on both sides of the liquid collecting tank, connected to the inner side surface of the spraying rack, and each lifting drive mechanism is vertically distributed with respect to the horizontal plane. There are two brackets in total. The side surfaces of the two brackets are connected to the lifting drive mechanism through sliders and are slidably connected to the inner side surface of the spraying rack through the lifting drive mechanism. At the same time, the two brackets are parallel to each other and distributed vertically, and the brackets form an angle of 0° - 45° with the upper end surface of the liquid collecting tank. The bracket is a "U"-shaped groove-like structure in cross-section. At least two water draining rollers are arranged inside the bracket. The axis of the water draining roller is parallel to the bottom of the bracket groove and forms an angle of 30° - 90° with the axis of the bracket. At the same time, the roller surface of the water draining roller extends at least 10 mm beyond the bracket. At the same time, each water draining roller is connected to the drive motor through a transmission mechanism. The drive motor is connected to the outer side surface of the bracket. In addition, the water draining rollers between the two brackets are distributed oppositely. At least one pressure sensor and at least one temperature and humidity sensor are arranged on the roller surface of the water draining roller, and the temperature and humidity sensors and pressure sensors are evenly distributed around the axis of the water draining roller. The lifting drive mechanism, pressure sensor, temperature and humidity sensor, and drive motor are all electrically connected to the drive circuit.

2. The green pollution-free preparation process of a highly moisture-retaining spunlace non-woven fabric according to claim 1, characterized in that: In the S2 step, when connecting the finished hydrophilic non-woven fabric surface layer and the hydrophilic fiber web, the surface tension directions of the finished hydrophilic non-woven fabric surface layer and the hydrophilic fiber web are the same, and at the same time, the surface tension of the finished hydrophilic non-woven fabric surface layer is 1.5 - 3 times that of the hydrophilic fiber web surface tension.

3. The green pollution-free preparation process of a highly moisture-retaining spunlace non-woven fabric according to claim 2, characterized in that: A sewage outlet is provided at the bottom of the liquid collecting tank. A number of semiconductor refrigeration mechanisms are provided at the bottom and inner side surface of the liquid collecting tank. At the same time, an electrostatic adsorption net is provided at the top of the liquid collecting tank. The semiconductor refrigeration mechanism and the electrostatic adsorption net are both electrically connected to the drive circuit.

4. The green pollution-free preparation process of a highly moisture-retaining spunlace non-woven fabric according to claim 3, characterized in that: The bottom of the bracket groove is a grid plate structure. At the same time, a hot air blower is provided at the bottom of the bracket groove. The axis of the hot air blower forms an angle of 10° - 90° with the upper end surface of the liquid collecting tank. In addition, the bracket and the slider are hinged through a turntable mechanism. At the same time, an inclination sensor is provided on the bracket. At the same time, the hot air blower, the turntable mechanism, and the inclination sensor are all electrically connected to the drive circuit.

5. The green pollution-free preparation process of a highly moisture-retaining spunlace non-woven fabric according to claim 1, characterized in that: The highly moisturizing spunlace nonwoven fabric comprises a hydrophilic nonwoven fabric surface layer, hydrophilic fiber strands, a hydrophilic fiber net and a fiber moisturizer, wherein the upper surface and the lower surface of the hydrophilic fiber net are both connected to a layer of hydrophilic nonwoven fabric surface layer, and the hydrophilic fiber net has at least one layer, and the hydrophilic nonwoven fabric surface layer and the hydrophilic fiber net are distributed in parallel, the fiber moisturizer is embedded in the hydrophilic fiber net, and the hydrophilic nonwoven fabric surface layer and the hydrophilic fiber net are connected by a plurality of hydrophilic fiber strands, and the hydrophilic fiber strands are distributed in a mesh structure.

6. A green and pollution-free preparation process for a highly moisturizing spunlace nonwoven fabric according to claim 5, Features: The mesh size of the hydrophilic fiber net is 0.5-2.5 mm, and the total thickness of the hydrophilic fiber net is 0.5-1.5 times the thickness of the hydrophilic non-woven fabric surface layer.

7. A green and pollution-free preparation process for a highly moisturizing spunlace nonwoven fabric according to claim 5, Features: The fiber moisturizing agent is any one of a solid moisture absorbent and a liquid moisture absorbent, or a mixture of the two in any proportion.

8. A green and pollution-free preparation process for a highly moisturizing spunlace nonwoven fabric according to claim 5, Features: The hydrophilic fiber strands are cotton threads with a diameter of 0.5-1.5 mm, and the hydrophilic fiber strands adopt any one of a mesh structure and a multi-row structure parallel to the axis of the hydrophilic fiber mesh.

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