Preparation method of one-way moisture guiding fabric with moisture absorption and sweat releasing functions

Abstract

The invention discloses a preparation method of a one-way moisture-conducting fabric with moisture absorption and sweat releasing functions, a wettability gradient mode and a differential capillary effect mode are combined to construct a combined one-way moisture-conducting fabric, a hydrophobic inner layer adopts a mesh structure, a first wettability gradient is formed after hydrophobic finishing, the wettability of a moisture-permeable glue layer is superior to that of the hydrophobic inner layer, and the moisture-permeable glue layer has good moisture absorption and sweat releasing effects. The inner side of the hydrophilic outer layer adopts a twill weave structure, the wettability of the hydrophilic outer layer is superior to that of the moisture-permeable glue layer after hydrophilic finishing, and a third wettability gradient is formed; the outer side of the hydrophilic outer layer is of a twill weave structure, the wettability of the hydrophilic outer layer is superior to that of the inner side of the hydrophilic outer layer after hydrophilic finishing and plasma treatment, a fourth wettability gradient is formed, a multi-layer wettability gradient is formed, each layer can generate suction force for sweat, and the one-way moisture guiding efficiency and reliability are greatly improved.

Description

A method for preparing a one-way moisture-wicking fabric with moisture-wicking function Technical Field

[0001] This invention belongs to the field of functional fabrics, and specifically relates to a method for preparing a unidirectional moisture-wicking fabric with moisture-wicking function. Background Technology

[0002] One-way moisture-wicking fabric is a high-performance textile that rapidly wicks sweat from the skin's surface from the inner layer to the outer layer, preventing it from seeping back. It significantly enhances the comfort of functional clothing used in sports and outdoor activities. This directional moisture-wicking function is primarily achieved by creating a wetting gradient or differential capillary effect. The wetting gradient typically involves a relatively hydrophobic inner layer and a hydrophilic outer layer, forming a gradient of gradually increasing wetting from the inside out, thus achieving unidirectional moisture wicking. The differential capillary effect utilizes the capillary pressure difference generated by the different pore structures of the inner and outer layers to achieve the same purpose.

[0003] In practical use, the two methods mentioned above have been found to have low one-way moisture-wicking efficiency and insufficient reliability, and are prone to liquid or moisture backflow, resulting in poor comfort. Therefore, there is an urgent need to develop a method that can improve the one-way moisture-wicking effect. Summary of the Invention

[0004] The purpose of this invention is to provide a method for preparing a one-way moisture-wicking fabric with moisture-wicking function. In view of the defects in the prior art, this invention combines the wettability gradient method and the differential capillary effect method to construct a combined one-way moisture-wicking fabric. First, the physical moisture-wicking foundation is established through the structure of the inner and outer layers. Then, the inner layer is hydrophobic and the outer layer is hydrophilic. This can greatly enhance the efficiency and reliability of one-way moisture wicking, significantly reduce the frequency of liquid or moisture backflow, and further improve the wearing comfort of the garment.

[0005] To solve the above-mentioned technical problems, the following technical solution is adopted.

[0006] A method for preparing a unidirectional moisture-wicking fabric with moisture-wicking function includes the following steps.

[0007] (1) Preparation of hydrophobic inner layer: Polypropylene fiber is taken and obtained by spinning and extrusion to obtain cross-shaped polypropylene fiber filaments. After being combined and twisted, yarn is formed. Then, the inner layer fabric with a mesh structure is woven by knitting. Finally, it is finished to obtain the hydrophobic inner layer fabric.

[0008] (2) Preparation of hydrophilic outer layer: Take viscose fiber, weave it into a twill outer layer fabric by a spinning machine, and then perform finishing to obtain hydrophilic outer layer fabric.

[0009] (3) Lamination: The hydrophobic inner layer fabric and the hydrophilic outer layer fabric are bonded together in a mesh pattern using a moisture-permeable adhesive to obtain a one-way moisture-wicking fabric.

[0010] After optimization, step (1), post-processing includes: firstly, refining, washing, neutralizing and drying the inner layer fabric, preparing a fluorine-containing water-repellent working solution, and padding the inner layer fabric into the fluorine-containing water-repellent working solution, controlling the liquid content to 75%; after padding, pre-drying the inner layer fabric at 100°C for 5 minutes, baking at 150°C for 150 seconds and cooling and curing treatment in sequence to obtain the hydrophobic inner layer fabric.

[0011] After optimization, the formulation of the fluorinated water-repellent working solution is as follows: 50 g / L of perfluoroalkyl acrylate polymer, 5 g / L of crosslinking agent hexamethylolmelamine, and 3 g / L of catalyst magnesium trifluoromethanesulfonate; after preparing the fluorinated water-repellent working solution, its pH is adjusted to 6.0.

[0012] After optimization, step (2), the finishing process includes plasma treatment: first, the outer fabric is washed, rinsed and dried with warm water to control the moisture content of the fabric to be no higher than 5%; the outer fabric is treated with oxygen plasma for 100s; after plasma treatment, the outer fabric is sprayed with acrylic monomer solution to complete the grafting reaction; after the reaction, the ungrafted free monomers and self-polymers are removed by curing and cleaning to obtain the plasma-treated outer fabric.

[0013] After optimization, step (2) further includes hydrophilic finishing: preparing a polyurethane hydrophilic finishing solution, and using a padding method to immerse the plasma-treated outer fabric into the polyurethane hydrophilic finishing solution, controlling the liquid content to 80%; after padding, pre-drying the outer fabric at 100°C for 5 minutes, and finally baking the fabric at 145°C for 160 seconds to obtain the hydrophilic finished outer fabric.

[0014] After optimization, the formulation of the polyurethane hydrophilic finishing liquid is as follows: 30 g / L polyurethane hydrophilic finishing agent, 1 g / L sodium alkyl sulfonate, and 0.5 g / L polyether-modified silicone oil as a softener.

[0015] After optimization, the impregnation is completed in a continuous impregnation mill. According to the impregnation operation requirements, a one-dip-one-roll or two-dip-two-roll method is selected, and the impregnation time is determined. The impregnation roller mechanism and the rolling mill mechanism of the continuous impregnation mill are adjusted according to the impregnation method and impregnation time. After the adjustment is completed, the impregnation operation begins. The liquid content of the fabric after the first section of impregnation is detected. If the liquid content meets the requirements, the impregnation operation continues. If the liquid content does not meet the requirements, the impregnation roller mechanism and the rolling mill mechanism are readjusted, and the above detection operation is repeated until the liquid content meets the requirements.

[0016] After optimization, the continuous impregnation mill includes a frame, an impregnation tank, an impregnation roller mechanism, and a roll mechanism. The impregnation roller mechanism is installed in the impregnation tank. The impregnation roller mechanism includes a double roller assembly and an angle control component for controlling the double roller assembly. The angle control component controls the double roller assembly to adjust the impregnation time of the fabric. The roll mechanism includes a first main roll, a second main roll, and a driven roll. The driven roll is connected to a position control component, which controls the position of the driven roll to adjust it to a one-impregnation-one-roll mode or a two-impregnation-two-roll mode.

[0017] Preferably, the impregnation roller mechanism has two sets: the first impregnation roller mechanism is used for primary impregnation, and the second impregnation roller mechanism is used for secondary impregnation. The dual-roller assembly includes a main impregnation roller and an auxiliary impregnation roller. The main impregnation roller is connected to the angle control assembly, and the auxiliary impregnation roller is connected to the main impregnation roller. The angle control assembly includes a rotating shaft and a control handle. One end of the rotating shaft is connected to the main impregnation roller, and the other end is connected to the control handle. The main impregnation roller is rotated by the control handle, thereby adjusting the position of the auxiliary impregnation roller and changing the relative position of the main impregnation roller and the auxiliary impregnation roller to adjust the impregnation time of the fabric. The handle of the control handle has a first screw hole, in which a positioning screw is connected. A second screw hole group is provided at a corresponding position on the frame. The second screw hole group includes second screw holes arranged at equal angles. The second screw holes match the positioning screw to connect and fix the positioning screw, thereby fixing the control handle and the main impregnation roller.

[0018] In the preferred embodiment, the position control assembly includes a connecting shaft, a connecting rod, a coupling, a reducer, and a motor. One end of the driven roller is connected to the connecting shaft, and the other end of the connecting shaft is connected to the connecting rod. The other end of the connecting rod is fixed to the coupling. The connector is used to connect the motor shaft, and the motor shaft connects the reducer and the motor. The axis of the motor shaft is on the same horizontal line as the axis of the first main roller, driving the driven roller to rotate around the first main roller, changing the position of the driven roller, thereby adjusting it to a one-dip-one-roll or two-dip-two-roll mode. Pulleys are connected to both ends of the driven roller, and a through-hole is provided at the corresponding position of the frame. The shape of the through-hole matches the rotation trajectory of the driven roller, and a slide rail is provided inside the through-hole, which matches the pulleys.

[0019] The above technical solution has the following beneficial effects.

[0020] This invention combines wettability gradient and differential capillary effect to construct a combined unidirectional moisture-wicking fabric. First, the physical moisture-wicking foundation is established through the structure of the inner and outer layers. Then, the inner layer is hydrophobic and the outer layer is hydrophilic. This can greatly enhance the efficiency and reliability of unidirectional moisture wicking, significantly reduce the frequency of liquid or moisture backflow, and further improve the wearing comfort of the garment.

[0021] The fabric of this invention comprises a hydrophobic inner layer, a breathable adhesive layer, and a hydrophilic outer layer. The hydrophobic inner layer adopts a mesh structure and, after hydrophobic finishing, forms a first gradient of wettability. The breathable adhesive layer has better wettability than the hydrophobic inner layer, forming a second gradient of wettability. The hydrophilic outer layer adopts a twill weave structure on the inside and, after hydrophilic finishing, has better wettability than the breathable adhesive layer, forming a third gradient of wettability. The hydrophilic outer layer adopts a twill weave structure on the outside and, after hydrophilic finishing and plasma treatment, has better wettability than its inner layer, forming a fourth gradient of wettability. This creates a multi-layered wettability gradient, where each layer can absorb sweat, greatly enhancing the efficiency and reliability of one-way moisture wicking. Attached Figure Description

[0022] The invention will now be further described with reference to the accompanying drawings.

[0023] Figure 1 is a schematic diagram of the continuous impregnation mill.

[0024] Figure 2 is a schematic diagram of the impregnation tank.

[0025] Figure 3 is a schematic diagram of the impregnation roller mechanism.

[0026] Figure 4 is a schematic diagram of the angle control component.

[0027] Figure 5 is a schematic diagram of the installation of the angle control component.

[0028] Figure 6 is a schematic diagram of the roll mechanism.

[0029] Figure 7 is a schematic diagram of the position control component.

[0030] The attached figures are labeled as follows: frame 1, through port 11, second screw hole 12, impregnation tank 2, impregnation roller mechanism 3, first impregnation roller mechanism 31, second impregnation roller mechanism 32, double roller assembly 33, main impregnation roller 331, auxiliary impregnation roller 332, angle control assembly 34, rotating shaft 341, control handle 342, first screw hole 343, positioning screw 344, rolling mechanism 4, first main rolling roller 41, second main rolling roller 42, slave rolling roller 43, position control assembly 5, connecting shaft 51, connecting rod 52, coupling 53, reducer 54, motor 55, pulley 6. Detailed Implementation

[0031] This invention aims to provide a method for preparing a one-way moisture-wicking fabric with moisture-wicking function. By combining the wettability gradient method and the differential capillary effect method, a combined one-way moisture-wicking fabric is constructed. First, the physical moisture-wicking foundation is established through the organizational structure of the inner and outer layers. Then, the inner layer is hydrophobic and the outer layer is hydrophilic. This can greatly enhance the efficiency and reliability of one-way moisture wicking, significantly reduce the frequency of liquid or moisture backflow, and further improve the wearing comfort of the garment.

[0032] The fabric of this invention comprises a hydrophobic inner layer, a breathable adhesive layer, and a hydrophilic outer layer. The hydrophobic inner layer adopts a mesh structure and, after hydrophobic finishing, forms a first gradient of wettability. The breathable adhesive layer has better wettability than the hydrophobic inner layer, forming a second gradient of wettability. The hydrophilic outer layer adopts a twill weave structure on the inside and, after hydrophilic finishing, has better wettability than the breathable adhesive layer, forming a third gradient of wettability. The hydrophilic outer layer adopts a twill weave structure on the outside and, after hydrophilic finishing and plasma treatment, has better wettability than its inner layer, forming a fourth gradient of wettability. This creates a multi-layered wettability gradient, where each layer can absorb sweat, greatly enhancing the efficiency and reliability of one-way moisture wicking.

[0033] The technical solution of the present invention will be described in detail below with reference to specific embodiments.

[0034] Example 1.

[0035] A method for preparing a unidirectional moisture-wicking fabric with moisture-wicking function includes the following steps.

[0036] (1) Preparation of hydrophobic inner layer.

[0037] Polypropylene fibers are obtained by spinning and extrusion to obtain cross-shaped polypropylene filaments. These filaments are then combined and twisted to form yarns, which are then knitted into an inner layer of fabric with a mesh structure. The combined and twisted yarns are coarser, and the mesh structure creates larger storage spaces that can temporarily store sweat, thus improving the unidirectional moisture-wicking effect. By changing the yarn and fabric structure, a moisture gradient is created, which preserves the original properties of the fabric.

[0038] Finally, the inner fabric undergoes finishing processes to obtain the hydrophobic inner layer fabric: First, the inner fabric is refined, washed, neutralized, and dried to remove oils, lubricants, antistatic agents, etc., applied during spinning and weaving. These residues will hinder the spreading and adhesion of the water-repellent finishing agent on the fiber surface; at the same time, it is necessary to ensure that the pH value of the fabric surface is neutral (pH 6-7), as excessive acidity or alkalinity will affect the cross-linking and curing of the water-repellent finishing agent.

[0039] Subsequently, a fluorine-containing water-repellent working solution was prepared. The formula of the fluorine-containing water-repellent working solution is as follows: 50 g / L of perfluoroalkyl acrylate polymer, 5 g / L of crosslinking agent hexamethylol melamine, 3 g / L of catalyst magnesium trifluoromethanesulfonate, and the remainder is water. In the preparation process, first, 2 / 3 of the deionized water was taken and added to the perfluoroalkyl acrylate polymer, and stirred and mixed. Then, hexamethylol melamine and magnesium trifluoromethanesulfonate were added in sequence, and stirred and spread until uniform. Finally, the remaining deionized water was added, and stirring was continued until the working solution was stable. After the fluorine-containing water-repellent working solution was prepared, its pH was adjusted to 6.0.

[0040] The inner layer fabric is dipped into a fluorinated water-repellent working solution using a two-dip and two-ply method, with the liquid content controlled at 75%. After dipping and plying, the inner layer fabric is pre-dried at 100℃ for 5 minutes, baked at 150℃ for 150 seconds, and cooled and cured to obtain a hydrophobic inner layer fabric.

[0041] (2) Preparation of hydrophilic outer layer.

[0042] Viscose fiber is woven into an outer twill fabric using a spinning machine. Twill fabric is a structure with small pores and high density, which can generate strong capillary force, thereby pulling sweat or moisture from the inner layer and helping to achieve a highly efficient one-way moisture wicking effect.

[0043] Plasma treatment: First, soak the fabric in deionized water at 40-50℃ for 15-20 minutes, add 0.5-1g / L of nonionic surfactant fatty alcohol polyoxyethylene ether, and stir gently; rinse repeatedly with deionized water 3-4 times to remove residual surfactant; dry in an oven at 60-80℃ for 2-3 hours, or vacuum dry for 1 hour, ensuring that the fabric moisture content is ≤5%, as moisture will consume plasma energy and reduce activation efficiency. The outer layer of fabric is treated with oxygen plasma for 100 seconds, with a discharge power of 60W, a working pressure of 30Pa, and a gas flow rate of 20sccm. After plasma treatment, the outer layer of fabric is sprayed with an acrylic monomer solution to complete the grafting reaction. After the reaction, the fabric is rinsed with 50℃ deionized water 3-4 times until the pH value of the rinsing water is stable (close to neutral) to remove free monomers (to avoid residual monomers causing odor or irritation to the fabric). The fabric is then dried in an oven at 80-100℃ for 30-60 minutes to promote the stabilization of covalent bonds between the grafted groups and the fiber surface, finally obtaining the plasma-treated outer layer of fabric.

[0044] Hydrophilic finishing: Prepare a polyurethane hydrophilic finishing solution. The formula of the polyurethane hydrophilic finishing solution is as follows: 30 g / L polyurethane hydrophilic finishing agent, 1 g / L sodium alkyl sulfonate, and 0.5 g / L polyether modified silicone oil softener.

[0045] The outer fabric, after plasma treatment, was dipped and rolled into a polyurethane hydrophilic finishing solution using a two-dip and two-roll method, with the liquid content controlled at 80%. After rolling, the outer fabric was pre-dried at 100°C for 5 minutes, and finally baked at 145°C for 160 seconds to obtain the hydrophilic finished outer fabric.

[0046] (3) Lamination: Water-based polyurethane adhesive is used to bond the hydrophobic inner layer fabric to the hydrophilic outer layer fabric in a grid pattern to obtain a one-way moisture-wicking fabric.

[0047] This invention combines a wettability gradient approach and a differential capillary effect approach to construct a composite unidirectional moisture-wicking fabric. The hydrophobic inner layer adopts a mesh structure, and after hydrophobic finishing, it forms the first wettability gradient. The wettability of the moisture-permeable adhesive layer is better than that of the hydrophobic inner layer, forming the second wettability gradient. The hydrophilic outer layer adopts a twill weave structure inside, and after hydrophilic finishing, its wettability is better than that of the moisture-permeable adhesive layer, forming the third wettability gradient. The hydrophilic outer layer adopts a twill weave structure outside, and after hydrophilic finishing and plasma treatment, its wettability is better than that of its inner layer, forming the fourth wettability gradient. This creates a multi-layered wettability gradient, with each layer capable of absorbing sweat, greatly enhancing the efficiency and reliability of unidirectional moisture wicking.

[0048] Example 2.

[0049] A method for preparing a unidirectional moisture-wicking fabric with moisture-wicking function includes the following steps.

[0050] (1) Preparation of hydrophobic inner layer.

[0051] Polypropylene fibers are obtained by spinning and extrusion to obtain cross-shaped polypropylene filaments. These filaments are then combined and twisted to form yarns, which are then knitted into an inner layer of fabric with a mesh structure. The combined and twisted yarns are coarser, and the mesh structure creates larger storage spaces that can temporarily store sweat, thus improving the unidirectional moisture-wicking effect. By changing the yarn and fabric structure, a moisture gradient is created, which preserves the original properties of the fabric.

[0052] Finally, the inner fabric undergoes finishing processes to obtain the hydrophobic inner layer fabric: First, the inner fabric is refined, washed, neutralized, and dried to remove oils, lubricants, antistatic agents, etc., applied during spinning and weaving. These residues will hinder the spreading and adhesion of the water-repellent finishing agent on the fiber surface; at the same time, it is necessary to ensure that the pH value of the fabric surface is neutral (pH 6-7), as excessive acidity or alkalinity will affect the cross-linking and curing of the water-repellent finishing agent.

[0053] Subsequently, a fluorine-containing water-repellent working solution was prepared. The formula of the fluorine-containing water-repellent working solution is as follows: 50 g / L of perfluoroalkyl acrylate polymer, 5 g / L of crosslinking agent hexamethylol melamine, 3 g / L of catalyst magnesium trifluoromethanesulfonate, and the remainder is water. In the preparation process, first, 2 / 3 of the deionized water was taken and added to the perfluoroalkyl acrylate polymer, and stirred and mixed. Then, hexamethylol melamine and magnesium trifluoromethanesulfonate were added in sequence, and stirred and spread until uniform. Finally, the remaining deionized water was added, and stirring was continued until the working solution was stable. After the fluorine-containing water-repellent working solution was prepared, its pH was adjusted to 6.0.

[0054] The inner layer fabric is dipped into a fluorinated water-repellent working solution using a one-dip-one-pinch method, with the liquid content controlled at 75%. After dipping, the inner layer fabric is pre-dried at 100℃ for 5 minutes, baked at 150℃ for 150 seconds, and cooled and cured to obtain the hydrophobic inner layer fabric.

[0055] (2) Preparation of hydrophilic outer layer.

[0056] Viscose fiber is woven into an outer twill fabric using a spinning machine. Twill fabric is a structure with small pores and high density, which can generate strong capillary force, thereby pulling sweat or moisture from the inner layer and helping to achieve a highly efficient one-way moisture wicking effect.

[0057] Plasma treatment: First, soak the fabric in deionized water at 40-50℃ for 15-20 minutes, add 0.5-1g / L of nonionic surfactant fatty alcohol polyoxyethylene ether, and stir gently; rinse repeatedly with deionized water 3-4 times to remove residual surfactant; dry in an oven at 60-80℃ for 2-3 hours, or vacuum dry for 1 hour, ensuring that the fabric moisture content is ≤5%, as moisture will consume plasma energy and reduce activation efficiency. The outer layer of fabric is treated with oxygen plasma for 100 seconds, with a discharge power of 60W, a working pressure of 30Pa, and a gas flow rate of 20sccm. After plasma treatment, the outer layer of fabric is sprayed with an acrylic monomer solution to complete the grafting reaction. After the reaction, the fabric is rinsed with 50℃ deionized water 3-4 times until the pH value of the rinsing water is stable (close to neutral) to remove free monomers (to avoid residual monomers causing odor or irritation to the fabric). The fabric is then dried in an oven at 80-100℃ for 30-60 minutes to promote the stabilization of covalent bonds between the grafted groups and the fiber surface, finally obtaining the plasma-treated outer layer of fabric.

[0058] Hydrophilic finishing: Prepare a polyurethane hydrophilic finishing solution. The formula of the polyurethane hydrophilic finishing solution is as follows: 30 g / L polyurethane hydrophilic finishing agent, 1 g / L sodium alkyl sulfonate, and 0.5 g / L polyether modified silicone oil softener.

[0059] The outer fabric, after plasma treatment, is dipped and rolled into a polyurethane hydrophilic finishing solution using a one-dip-one-roll method, with the liquid content controlled at 80%. After rolling, the outer fabric is pre-dried at 100℃ for 5 minutes, and finally baked at 145℃ for 160 seconds to obtain the hydrophilic finished outer fabric.

[0060] (3) Lamination: Solvent-based polyurethane adhesive is used to bond the hydrophobic inner layer fabric to the hydrophilic outer layer fabric in a grid pattern to obtain a one-way moisture-wicking fabric.

[0061] Example 3.

[0062] The impregnation in Examples 1 and 2 is completed in a continuous impregnation mill, as shown in Figures 1-7. The continuous impregnation mill includes a frame 1, an impregnation tank 2, an impregnation roller mechanism 3, and a rolling mill mechanism 4. The impregnation roller mechanism 3 is installed in the impregnation tank 2. The impregnation roller mechanism 3 includes a double roller assembly 33 and an angle control component 34 for controlling the double roller assembly 33. The angle control component 34 controls the double roller assembly 33 to adjust the impregnation time of the fabric.

[0063] As shown in Figure 2, the impregnation roller mechanism 3 has two sets. The first impregnation roller mechanism 3 is used for primary impregnation and is labeled as the first impregnation roller mechanism 31. The second impregnation roller mechanism 3 is used for secondary impregnation and is labeled as the second impregnation roller mechanism 32. Both the first impregnation roller mechanism 31 and the second impregnation roller mechanism 32 include a double roller assembly 33 and an angle control assembly 34. The double roller assembly 33 includes a main impregnation roller 331 and an auxiliary impregnation roller 332. One end of the main impregnation roller 331 is connected to the angle control assembly 34, and the auxiliary impregnation roller 332 is connected to the main impregnation roller 331 and rotates with the main impregnation roller 331.

[0064] As shown in Figure 4, the angle control component 34 includes a rotating shaft 341 and a control handle 342. One end of the rotating shaft 341 is connected to the main impregnation roller 331, and the other end is connected to the control handle 342. The control handle 342 is installed on the surface of one side of the frame 1. By operating the control handle 342, the main impregnation roller 331 can be rotated. The rotating main impregnation roller 331 can drive the secondary impregnation roller 332 to rotate around it, thereby adjusting the position of the secondary impregnation roller 332 and changing the relative position of the main impregnation roller 331 and the secondary impregnation roller 332, so as to adjust the impregnation time of the fabric. When the secondary impregnation roller 332 is located above and below the main impregnation roller 331, the fabric is soaked in the impregnation liquid for the shortest time. As the relative position of the two increases, the soaking time gradually increases. Therefore, the soaking time can be quantitatively adjusted, which is a very ingenious design.

[0065] The control handle 342 has a first screw hole 343 on its handle, through which a positioning screw 344 is connected. The positioning screw 344 is used to fix the control handle 342, thereby fixing the main impregnation roller 331. To achieve positioning and fixing, a second screw hole group is provided at a corresponding position on the frame 1. The second screw hole group includes several second screw holes 12, which are arranged in an arc shape at equal intervals. Their arrangement matches the rotation range of the control handle 342. The second screw holes 12 match the positioning screw 344 to connect and fix the positioning screw 344, thereby fixing the control handle 342 and the main impregnation roller 331. The main impregnation roller 331 is fixed based on the above threaded structure, which is convenient to operate and can avoid unnecessary rotation. To further facilitate operation, the impregnation time corresponding to each rotation direction (i.e., each second screw hole 12) can be determined and marked near the corresponding second screw hole 12, so that the operator can quickly find the position to which the control handle 342 needs to be rotated.

[0066] As shown in Figure 6, the rolling mechanism 4 includes a first main roll 41, a second main roll 42, and a driven roll 43. The first main roll 41 and the second main roll 42 are set at the same height and are used for primary and secondary immersion rolling, respectively. Both are synchronously driven by the same drive motor and rotate in the same direction to ensure operational stability during secondary immersion rolling. The driven roll 43 is connected to a position control component 5, which controls the position of the driven roll 43, adjusting it to either a one-immersion rolling mode or a two-immersion rolling mode. In the one-immersion rolling mode, the driven roll 43 is located directly above the first main roll 41, allowing for one-immersion rolling operations. In the two-immersion rolling mode, the driven roll 43 is located between the first main roll 41 and the second main roll 42, arranged in an equilateral triangle (as shown in Figure 6), with the same spacing between the first main roll 41, the second main roll 42, and the driven roll 43, allowing for two-immersion rolling operations.

[0067] The position control assembly 5 includes a connecting shaft 51, a connecting rod 52, a coupling 53, a reducer 54, and a motor 55. The connecting shaft 51 is connected to one end of the roll 43 (the end without the drive motor assembly), and the connecting rod 52 is connected to the other end of the connecting shaft 51. The other end of the connecting rod 52 is fixed to the coupling 53. A connector is used to connect the motor 55 shaft, and the motor 55 shaft connects the reducer 54 and the motor 55. The axis of the motor 55 shaft is on the same horizontal line as the axis of the first main roll 41, driving the slave roll 43 to rotate around the first main roll 41, changing the position of the slave roll 43, thereby adjusting it to a one-dip-one-roll mode or a two-dip-two-roll mode.

[0068] Pulleys 6 are connected to the frame 1 at both ends of the roll 43. A corresponding opening 11 is provided on the frame 1, the shape of which matches the rotation trajectory of the roll 43. A slide rail (not shown in the figure) is provided inside the opening 11, and the slide rail matches the pulleys 6. The structure of the pulleys 6 improves the stability of the roll 43's rotation. To further ensure the stability of the roll 43's rotation, it is made of lightweight material.

[0069] The above are merely specific embodiments of the present invention, but the technical features of the present invention are not limited thereto. Any simple changes, equivalent substitutions, or modifications made based on the present invention to solve essentially the same technical problems and achieve essentially the same technical effects are all covered within the protection scope of the present invention.

Claims

1. A method for preparing a unidirectional moisture-wicking fabric with moisture-wicking function, characterized in that... The process includes the following steps: (1) Preparation of hydrophobic inner layer: Polypropylene fiber is taken and obtained by spinning and extrusion to form cross-shaped polypropylene fiber filaments. After being combined and twisted, yarn is formed. Then, the inner layer fabric with a mesh structure is woven by knitting. Finally, it is finished to obtain the hydrophobic inner layer fabric; (2) Preparation of hydrophilic outer layer: Viscose fiber is taken and woven by spinning machine to obtain the outer layer fabric with a twill structure. After finishing, it is finished to obtain the hydrophilic outer layer fabric; (3) Lamination and bonding: The hydrophobic inner layer fabric and the hydrophilic outer layer fabric are bonded by using a moisture-permeable adhesive in a mesh manner to obtain a one-way moisture-wicking fabric.

2. The method for preparing a unidirectional moisture-wicking fabric with moisture-wicking function according to claim 1, characterized in that: The step (1), post-processing includes: firstly, refining, washing, neutralizing and drying the inner layer fabric, preparing a fluorine-containing water-repellent working solution, and padding the inner layer fabric into the fluorine-containing water-repellent working solution, controlling the liquid content to 75%; after padding, pre-drying the inner layer fabric at 100℃ for 5 minutes, baking at 150℃ for 150 seconds and cooling and curing treatment in sequence to obtain the hydrophobic inner layer fabric.

3. The method for preparing a unidirectional moisture-wicking fabric with moisture-wicking function according to claim 2, characterized in that: The formulation of the fluorine-containing water-repellent working solution is as follows: 50 g / L of perfluoroalkyl acrylate polymer, 5 g / L of crosslinking agent hexamethylolmelamine, and 3 g / L of catalyst magnesium trifluoromethanesulfonate; after preparing the fluorine-containing water-repellent working solution, its pH is adjusted to 6.

0.

4. The method for preparing a unidirectional moisture-wicking fabric with moisture-wicking function according to claim 2, characterized in that: Step (2), the finishing process includes plasma treatment: first, the outer fabric is washed, rinsed and dried with warm water to control the moisture content of the fabric to be no higher than 5%; the outer fabric is treated with oxygen plasma for 100s; after plasma treatment, the outer fabric is sprayed with an acrylic monomer solution to complete the grafting reaction; after the reaction, the ungrafted free monomers and self-polymers are removed by curing and cleaning to obtain the plasma-treated outer fabric.

5. The method for preparing a unidirectional moisture-wicking fabric with moisture-wicking function according to claim 4, characterized in that: The post-treatment step (2) also includes hydrophilic finishing: preparing a polyurethane hydrophilic finishing solution, and using a padding method to immerse the plasma-treated outer fabric into the polyurethane hydrophilic finishing solution, controlling the liquid content to 80%; after padding, pre-drying the outer fabric at 100°C for 5 minutes, and finally baking the fabric at 145°C for 160 seconds to obtain the hydrophilic finished outer fabric.

6. The method for preparing a unidirectional moisture-wicking fabric with moisture-wicking function according to claim 5, characterized in that: The formula of the polyurethane hydrophilic finishing liquid is as follows: 30 g / L polyurethane hydrophilic finishing agent, 1 g / L sodium alkyl sulfonate, and 0.5 g / L polyether modified silicone oil as a softener.

7. A method for preparing a unidirectional moisture-wicking fabric with moisture-wicking function according to claim 2 or 5, characterized in that: The impregnation is completed in a continuous impregnation mill. According to the impregnation operation requirements, a one-dip-one-roll or two-dip-two-roll method is selected, and the impregnation time is determined. The impregnation roll mechanism and the rolling mill mechanism of the continuous impregnation mill are adjusted according to the impregnation method and impregnation time. After the adjustment is completed, the impregnation operation begins. The liquid content of the fabric after the first section of impregnation is detected. If the liquid content meets the requirements, the impregnation operation continues. If the liquid content does not meet the requirements, the impregnation roll mechanism and the rolling mill mechanism are readjusted, and the above detection operation is repeated until the liquid content meets the requirements.

8. The method for preparing a unidirectional moisture-wicking fabric with moisture-wicking function according to claim 7, characterized in that: The continuous impregnation mill includes a frame, an impregnation tank, an impregnation roller mechanism, and a roll mechanism. The impregnation roller mechanism is installed in the impregnation tank. The impregnation roller mechanism includes a double roller assembly and an angle control component for controlling the double roller assembly. The angle control component controls the double roller assembly to adjust the impregnation time of the fabric. The roll mechanism includes a first main roll, a second main roll, and a driven roll. The driven roll is connected to a position control component, which controls the position of the driven roll to adjust it to a one-impregnation-one-roll mode or a two-impregnation-two-roll mode.

9. A method for preparing a unidirectional moisture-wicking fabric with moisture-wicking function according to claim 8, characterized in that: The impregnation roller mechanism has two sets: the front impregnation roller mechanism is used for primary impregnation, and the rear impregnation roller mechanism is used for secondary impregnation. The dual-roller assembly includes a main impregnation roller and an auxiliary impregnation roller. The main impregnation roller is connected to the angle control assembly, and the auxiliary impregnation roller is connected to the main impregnation roller. The angle control assembly includes a rotating shaft and a control handle. One end of the rotating shaft is connected to the main impregnation roller, and the other end is connected to the control handle. The main impregnation roller is rotated by the control handle, thereby adjusting the position of the auxiliary impregnation roller and changing the relative position of the main impregnation roller and the auxiliary impregnation roller to adjust the impregnation time of the fabric. The control handle has a first screw hole, in which a positioning screw is connected. The frame has a second screw hole group at a corresponding position. The second screw hole group includes second screw holes arranged at equal angles. The second screw holes match the positioning screw and are used to connect and fix the positioning screw, thereby fixing the control handle and the main impregnation roller.

10. The method for preparing a unidirectional moisture-wicking fabric with moisture-wicking function according to claim 8, characterized in that: The position control assembly includes a connecting shaft, a connecting rod, a coupling, a reducer, and a motor. One end of the driven roller is connected to the connecting shaft, and the other end of the connecting shaft is connected to the connecting rod. The other end of the connecting rod is fixed to the coupling. The connector is used to connect the motor shaft, and the motor shaft connects the reducer and the motor. The axis of the motor shaft is on the same horizontal line as the axis of the first main roller, driving the driven roller to rotate around the first main roller, changing the position of the driven roller, thereby adjusting it to a one-dip-one-roll or two-dip-two-roll mode. Pulleys are connected to both ends of the driven roller, and a through-hole is provided at the corresponding position of the frame. The shape of the through-hole matches the rotation trajectory of the driven roller, and a slide rail is provided inside the through-hole, which matches the pulleys.

Images