Fabric with one-way moisture conducting effect and method for making same

Abstract

The application discloses a fabric with one-way moisture guiding effect and a preparation method thereof, which comprises a double-sided double-layer structure, an outer layer formed by hydrophilic yarns into a hydrophilic layer, and an inner layer formed by water-repellent yarns into a moisture guiding layer, and the outer layer and the inner layer are connected through fabric organization points of the hydrophilic yarns of the outer layer, and hydrophilic moisture guiding points are uniformly distributed on the water-repellent surface of the outer layer. The one-way moisture guiding fabric of the application has hydrophilic moisture guiding points uniformly distributed on the water-repellent surface of the inner layer, can quickly guide sweat to the outer layer, and keeps the internal fabric continuously dry. The water-repellent effect of the water-repellent yarns of the inner layer is more excellent, and can effectively prevent reverse seepage of sweat. The fabric still has good one-way moisture guiding performance after multiple washes, and meets the moisture absorption and sweat releasing requirements of GB / T21655.2-2019 Textiles - Assessment of the moisture management properties - Part 2: Dynamic moisture transmission method.

Description

Technical Field

[0001] This invention relates to the textile field, and in particular to a woven fabric with unidirectional moisture-wicking effect and a method for preparing the same. Background Technology

[0002] Currently, people are paying more and more attention to sports, especially indoor sports and light urban sports, which naturally places higher demands on the comfort of related clothing. Therefore, one-way moisture-wicking fabrics, which can quickly wick away sweat and keep the body dry, have become very popular. One-way moisture-wicking fabrics have a double-layer structure, with the inner and outer layers having different hydrophilic and hydrophobic properties. The outer layer is made of hydrophilic yarns, forming a hydrophilic layer, while the inner layer is made of water-repellent yarns, forming a moisture-wicking layer. Sweat and moisture generated during body movement are conducted from the hydrophobic side to the hydrophilic side. Through the interlacing points and weave gaps on both sides of the fabric, the moisture creates a pressure difference, easily wicking it away and keeping the skin dry. Currently, there are two main types of one-way moisture-wicking processing methods:

[0003] 1. The fabric is finished to make one side hydrophilic and the other water-repellent. This method is usually done in the finishing stage. The water-repellent agent applied to the inner layer can easily penetrate to the outer layer, resulting in a stiffer feel to the fabric. At the same time, the water-repellent agent will seal the gaps in the entire fabric, resulting in poor breathability, moisture permeability and poor washability.

[0004] 2. By using hydrophilic and water-repellent materials on one side of the fabric and employing a bird's-eye weave structure, the fabric lacks moisture-wicking points on the skin-contact side. Sweat can only be transferred to the surface through the fabric's mesh by gravity, resulting in poor moisture wicking. If the inner yarn is highly water-repellent, sweat is difficult to transfer; conversely, if the inner yarn is less water-repellent, sweat is prone to seeping back through. Summary of the Invention

[0005] In view of the shortcomings of the prior art described above, the purpose of this invention is to provide a fabric with unidirectional moisture-wicking effect and a method for preparing the same, so as to solve the problems in the prior art.

[0006] To achieve the above and other related objectives, the present invention is obtained by including the following technical solutions.

[0007] The present invention provides a fabric with unidirectional moisture-wicking effect, comprising a double-sided double-layer structure, wherein the outer layer is a hydrophilic layer formed by hydrophilic yarns, and the inner layer is a moisture-wicking layer formed by water-repellent yarns. The outer layer and the inner layer are connected by the weave points of the outer layer hydrophilic yarns, forming uniformly distributed hydrophilic moisture-wicking points on the water-repellent surface.

[0008] In the unidirectional moisture-wicking fabric of the present invention, the distribution range of the hydrophilic moisture-wicking points is 4-50 per square centimeter. If the number of moisture-wicking points is too small, moisture is difficult to transfer to the hydrophilic surface; if the number of moisture-wicking points is too large, the hydrophobic effect of the water-repellent surface is poor.

[0009] In the unidirectional moisture-wicking fabric of the present invention, the unidirectional moisture-wicking fabric is a dot-connected double-sided double-layer structure. The dot-connected double-sided double-layer fabric structure includes dot-connected double-sided double-layer (loop connection points) of various sizes and spacings or double-sided double-layer (both loop and loop connection points are made simultaneously) of various sizes and spacings.

[0010] In the unidirectional moisture-wicking fabric of the present invention, the moisture-wicking layer is woven from water-repellent yarn. The raw material of the water-repellent yarn is selected from one or more of cotton, polyester, nylon, and acrylic. Specifically, the water-repellent yarn composition can be 100% cotton. In the unidirectional moisture-wicking fabric of the present invention, the hydrophilic layer is woven from hydrophilic yarn. The raw material of the hydrophilic yarn is selected from one or more of cellulose fibers such as cotton, viscose, modal, Tencel, and bamboo fiber, or is a blend of cellulose fibers with polyester or nylon. Specifically, the hydrophilic yarn composition can be... In the preparation method of the 100% cotton fabric with unidirectional moisture-wicking effect of the present invention, the fabric is a double-sided double-layer structure. The outer layer is a hydrophilic layer formed by hydrophilic yarns, and the inner layer is a moisture-wicking layer formed by water-repellent yarns. The outer layer and the inner layer are connected by the weave points of the outer layer hydrophilic yarns, forming uniformly distributed hydrophilic moisture-wicking points on the water-repellent surface. The dot-connected double-sided double-layer fabric structure includes dot-connected double-sided double-layer with various sizes and spacings, or double-sided double-layer with both bird's-eye and dot connections of various sizes and spacings.

[0011] In the preparation method of the fabric with unidirectional moisture-wicking effect of the present invention, the water-repellent yarn is characterized by being produced by the following three methods: 1. preparing water-repellent colored yarn by dyeing and mixing loose fibers after water-repellent modification treatment; 2. preparing water-repellent raw yarn by directly spinning loose fibers after water-repellent modification treatment; 3. preparing water-repellent clean color yarn by dyeing the water-repellent raw yarn prepared by water-repellent modification treatment of loose fibers.

[0012] In the preparation method of the fabric with unidirectional moisture-wicking effect of the present invention, the hydrophilic yarn can be produced by the following three methods: 1. preparing hydrophilic colored yarn by hydrophilic modification of loose fibers and then spinning after color mixing; 2. preparing hydrophilic raw yarn by directly spinning loose fibers after hydrophilic modification; 3. preparing hydrophilic solid color yarn by dyeing the hydrophilic raw yarn prepared by hydrophilic modification of loose fibers.

[0013] In the preparation method of the fabric with one-way moisture-wicking effect of the present invention, after the fabric is woven from hydrophilic and water-repellent raw yarns, it still needs to be refined and dyed; when the fabric is woven from hydrophilic and water-repellent pure color yarns, or hydrophilic and water-repellent colored yarns, no further dyeing and finishing is required. The fabric has one-way moisture-wicking effect after only simple hot washing with soap oil to remove oil.

[0014] In the preparation method of the unidirectional moisture-wicking fabric of the present invention, the three fabric weaving treatment methods described herein can include the addition of a hydrophilic softening agent during processing, while the water-repellent layer still maintains excellent hydrophobic and moisture-wicking effects. The prepared unidirectional moisture-wicking fabric retains good unidirectional moisture-wicking performance after multiple washes, meeting the moisture-wicking requirements of GB / T21655.2-2019 Textiles: Evaluation of Moisture Absorption and Quick-Drying Properties Part 2: Dynamic Moisture Transfer Method.

[0015] In the preparation method of the fabric with unidirectional moisture-wicking effect of the present invention, the fabric has a double-sided, double-layer structure. The outer layer is a hydrophilic layer formed by hydrophilic yarns, and the inner layer is a moisture-wicking layer formed by water-repellent yarns. The outer and inner layers are connected by small-pitch dots. The specific steps are as follows:

[0016] On a double-sided machine, the upper needles are arranged in rows 1 and 2 with varying heights, and the lower needles are arranged in rows 3, 1, 2, and 1.

[0017] Four needles per row cycle, eight patterns per knitting cycle;

[0018] The first pattern is knitted with all-cotton hydrophilic yarn, with all purl stitches coming out to form a loop and the second row of knit stitches coming out to form a loop.

[0019] The second pattern uses all-cotton water-repellent yarn for knitting only in the knit stitches, with all stitches coming out to form loops;

[0020] The third pattern uses all-cotton hydrophilic yarn for knitting only with purl stitches, and all stitches are brought out to form loops.

[0021] The fourth module is the same as the second module;

[0022] The fifth pattern is knitted with all-cotton hydrophilic yarn, with all purl stitches coming out to form a loop and the third purl stitch coming out to form a loop;

[0023] The sixth mock exam is the same as the second mock exam;

[0024] The seventh module is the same as the third module;

[0025] The eighth model is the same as the second model;

[0026] One side of the fabric (downstitch) has both water-repellent yarn and hydrophilic yarn. The water-repellent yarn (any one of water-repellent solid color yarn, water-repellent colored yarn, or water-repellent raw yarn) accounts for 7 / 8, and the hydrophilic yarn (using a hydrophilic yarn of the same variety as the water-repellent yarn, such as using solid color yarn for water-repellent yarn, and also using solid color yarn for hydrophilic yarn) accounts for 1 / 8. The hydrophilic yarn forms a uniform and dense dot pattern, while the other side (upstitch) is 100% hydrophilic yarn. When making the finished garment, the water-repellent side is used as the inner layer.

[0027] In the preparation method of the fabric with unidirectional moisture-wicking effect of the present invention, the fabric has a double-sided, double-layer structure. The outer layer is a hydrophilic layer formed by hydrophilic yarns, and the inner layer is a moisture-wicking layer formed by water-repellent yarns. The outer and inner layers are connected by a large-pitch bird's-eye pattern and dot pattern on both sides. The specific steps are as follows:

[0028] On the double-sided machine, the upper needles are arranged in rows 1 and 2 with varying heights, and the lower needles are arranged in rows 3, 1, 1, 1, 1, 1, 1, 2, 1, 1, 1, 1, 1.

[0029] A 12-needle row cycle, and a 24-pattern knitting cycle;

[0030] The first pattern is knitted with all-cotton hydrophilic yarn, with all the purl stitches coming out to form a loop and the knit stitches coming out halfway through the second row to form a loop;

[0031] The second pattern uses all-cotton water-repellent yarn for knitting only in the knit stitches, with all stitches coming out to form loops;

[0032] The third pattern is knitted with all-cotton hydrophilic yarn, with all purl stitches coming out to form a loop and the second row of knit stitches coming out to form a loop.

[0033] The fourth module is the same as the second module;

[0034] Patterns 5, 7, 9, and 11 are knitted using all-cotton hydrophilic yarn with only purl stitches, and all stitches are looped.

[0035] Models 6, 8, 10, and 12 are the same as Model 2;

[0036] The thirteenth pattern is knitted with all-cotton hydrophilic yarn, with all the purl needles coming out to form a loop and the knit needles coming out on the third and a half rows to form a loop;

[0037] The fourteenth model is the same as the second model;

[0038] The fifteenth pattern is knitted with all-cotton hydrophilic yarn, with all purl stitches coming out to form a loop and the third row of knit stitches coming out to form a loop.

[0039] The sixteenth model is the same as the second model;

[0040] Models 17, 19, 21, and 23 are the same as Model 5;

[0041] The eighteenth, twentieth, twenty-twoth, and twenty-fourth models are the same as the second model;

[0042] One side of the fabric (downstitch) has both water-repellent yarn and hydrophilic yarn. The water-repellent yarn (any one of water-repellent solid color yarn, water-repellent colored yarn, or water-repellent raw yarn) accounts for 17 / 18, and the hydrophilic yarn (using a hydrophilic yarn of the same variety as the water-repellent yarn, such as using solid color yarn for the water-repellent yarn, and also using solid color yarn for the hydrophilic yarn) accounts for 1 / 18. The hydrophilic yarn forms a scattered small number of dots, while the other side (upstitch) has 100% of the hydrophilic yarn forming a scattered small number of bird's-eye style. When making the finished garment, the water-repellent yarn side is used as the inner layer. Attached Figure Description

[0043] Figure 1 This is a schematic diagram of the preparation method of Embodiment 1 of the present invention.

[0044] Figure 2 This is a schematic diagram of the preparation method of Embodiment 2 of the present invention.

[0045] The beneficial effects of the technical solution of this invention are as follows:

[0046] The unidirectional moisture-wicking fabric of this invention uses dot-connected double-sided double-layer (circular connection points) with various sizes and spacings, or double-sided double-layer (both tufted and circular connection points are made simultaneously) with various sizes and spacings. Compared with conventional tufted fabric, its moisture-wicking function is superior. The rapid and large amount of water absorption of the outer fibers can ensure that the inner fabric remains dry without backflow. The breathability and softness of the fabric are better than those of the printing process, and no embarrassing patterns will appear after the clothes are wet.

[0047] The dot-connected double-sided, double-layered unidirectional moisture-wicking fabric of this invention is suitable for various yarns with differences in hydrophilicity and water repellency, including but not limited to spun yarn, solid-color yarn, and grey yarn. It retains good unidirectional moisture-wicking properties even after multiple washes, meeting the moisture-wicking requirements of GB / T21655.2-2019 Textiles: Evaluation of Moisture Absorption and Quick-Drying Properties Part 2: Dynamic Moisture Transfer Method. Detailed Implementation

[0048] The following specific embodiments illustrate the implementation of the present invention. Those skilled in the art can easily understand other advantages and effects of the present invention from the content disclosed in this specification.

[0049] Before further describing specific embodiments of the present invention, it should be understood that the scope of protection of the present invention is not limited to the specific embodiments described below; it should also be understood that the terminology used in the embodiments of the present invention is for describing specific embodiments and not for limiting the scope of protection of the present invention. Test methods in the following embodiments that do not specify specific conditions are generally performed under conventional conditions or as recommended by the respective manufacturers.

[0050] When numerical ranges are given in the embodiments, it should be understood that, unless otherwise stated in the present invention, both endpoints of each numerical range and any value between the two endpoints may be selected. Unless otherwise defined, all technical and scientific terms used in this invention have the same meaning as commonly understood by one of ordinary skill in the art. In addition to the specific methods, apparatus, and materials used in the embodiments, based on the knowledge of the prior art possessed by one of ordinary skill in the art and the description of this invention, any prior art methods, apparatus, and materials similar to or equivalent to those described, apparatus, and materials in the embodiments of this invention may be used to implement the present invention.

[0051] In this invention, unless otherwise specified, all quantities, parts, and percentages are in units of mass, and all raw materials and equipment can be purchased from the market.

[0052] Example 1: (Small-pitch dot connection on both sides)

[0053] Hydrophilic yarns are made of hydrophilic colored yarns, and water-repellent yarns are made of water-repellent colored yarns.

[0054] Features: Finished product features a dotted pattern on the reverse side + rapid moisture wicking function on the reverse side.

[0055] On a double-sided machine, the upper needles are arranged in rows 1 and 2 with varying heights, and the lower needles are arranged in rows 3, 1, 2, and 1.

[0056] Four needles per row cycle, eight patterns per knitting cycle;

[0057] The first pattern is knitted with all-cotton hydrophilic yarn, with all purl stitches coming out to form a loop and the second row of knit stitches coming out to form a loop.

[0058] The second pattern uses all-cotton water-repellent yarn for knitting only in the knit stitches, with all stitches coming out to form loops;

[0059] The third pattern uses all-cotton hydrophilic yarn for knitting only with purl stitches, and all stitches are brought out to form loops.

[0060] The fourth module is the same as the second module;

[0061] The fifth pattern is knitted with all-cotton hydrophilic yarn, with all purl stitches coming out to form a loop and the third purl stitch coming out to form a loop;

[0062] The sixth mock exam is the same as the second mock exam;

[0063] The seventh module is the same as the third module;

[0064] The eighth model is the same as the second model;

[0065] One side of the fabric (downstitch) has both water-repellent yarn and hydrophilic yarn, with water-repellent yarn accounting for 7 / 8 and hydrophilic yarn accounting for 1 / 8. The hydrophilic yarn forms a uniform and dense dot pattern, while the other side (upstitch) is 100% hydrophilic yarn. When making the finished garment, the water-repellent side is used as the inner layer.

[0066] Functional performance test: According to the test results of a third-party testing organization, after 5 washes, the moisture absorption and quick-drying properties of the fabric meet the requirements of GB / T21655.2-2019 Textiles Moisture Absorption and Quick-Drying Properties Part 2: Dynamic Moisture Transfer Method.

[0067] Example 2: (Double layer of wide-pitch bird's-eye joint + dot joint)

[0068] Hydrophilic yarn uses hydrophilic raw yarn, and water-repellent yarn uses water-repellent raw yarn.

[0069] Features: Bird's-eye pattern on the front, dotted pattern on the back + quick moisture wicking function on the back

[0070] On the double-sided machine, the upper needles are arranged in rows 1 and 2 with varying heights, and the lower needles are arranged in rows 3, 1, 1, 1, 1, 1, 1, 2, 1, 1, 1, 1, 1.

[0071] A 12-needle row cycle, and a 24-pattern knitting cycle;

[0072] The first pattern is knitted with all-cotton hydrophilic yarn, with all the purl stitches coming out to form a loop and the knit stitches coming out halfway through the second row to form a loop;

[0073] The second pattern uses all-cotton water-repellent yarn for knitting only in the knit stitches, with all stitches coming out to form loops;

[0074] The third pattern is knitted with all-cotton hydrophilic yarn, with all purl stitches coming out to form a loop and the second row of knit stitches coming out to form a loop.

[0075] The fourth module is the same as the second module;

[0076] Patterns 5, 7, 9, and 11 are knitted using all-cotton hydrophilic yarn with only purl stitches, and all stitches are looped.

[0077] Models 6, 8, 10, and 12 are the same as Model 2;

[0078] The thirteenth pattern is knitted with all-cotton hydrophilic yarn, with all the purl needles coming out to form a loop and the knit needles coming out on the third and a half rows to form a loop;

[0079] The fourteenth model is the same as the second model;

[0080] The fifteenth pattern is knitted with all-cotton hydrophilic yarn, with all purl stitches coming out to form a loop and the third row of knit stitches coming out to form a loop.

[0081] The sixteenth model is the same as the second model;

[0082] Models 17, 19, 21, and 23 are the same as Model 5;

[0083] The eighteenth, twentieth, twenty-twoth, and twenty-fourth models are the same as the second model;

[0084] One side of the fabric (downstitch) has both water-repellent yarn and hydrophilic yarn, with water-repellent yarn accounting for 17 / 18 and hydrophilic yarn accounting for 1 / 18. The hydrophilic yarn forms a scattered small number of dots, while the other side (upstitch) has 100% hydrophilic yarn forming a scattered small number of bird's-eye style. When making the finished garment, the water-repellent yarn side is used as the inner layer.

[0085] The woven unidirectional moisture-wicking double-layered fabric requires subsequent refining and dyeing processes to reveal the difference between its hydrophilic and hydrophobic properties.

[0086] The following are the fabric dyeing and finishing processes:

[0087] S1 bleaching process: refining agent: 1g / L, sodium hydroxide 3g / L, hydrogen peroxide 5g / L, 98℃ treatment for 30min; bath ratio is 1:10; the refining agent is fatty acid methyl ester polyoxyethylene ether and sodium alkyl sulfonate in a mass ratio of 1:1; the sodium alkyl sulfonate can specifically be sodium dodecyl sulfonate.

[0088] S2 dyeing: Dyeing grade washing is the same as conventional cotton reactive dyeing process;

[0089] One-way moisture wicking effect verification: After testing, the fabric's moisture absorption and quick-drying properties and moisture wicking properties after 5 washes both meet the requirements of GB / T21655.2-2019 Textiles Moisture Absorption and Quick-Drying Properties Part 2: Dynamic Moisture Transfer Method.

[0090] The functional effects of the fabrics obtained in Examples 1-2 are shown in the table below.

[0091]

[0092] Example 3: Water-repellent yarn spinning process:

[0093] The preparation process of water-repellent cotton white fiber is as follows: the cotton fiber undergoes water-repellent pretreatment, hot washing, acid treatment, and water washing, followed by oiling treatment with an oiling agent containing water-repellent agent.

[0094] Hydrophobic pretreatment: Based on the total mass of the hydrophobic pretreatment aqueous solution, the amount of cotton fiber added is 5 wt%. The pretreatment aqueous solution contains 1.5 g / L of refining agent and 4 g / L of sodium hydroxide, and is boiled at 98°C for 60 minutes.

[0095] The refining agent is a mixture of fatty acid methyl ester polyoxyethylene ether and sodium dodecyl sulfonate in a mass ratio of 1:1;

[0096] Hot wash: Wash at 85℃ for 20 minutes;

[0097] Over-acid treatment: impregnation with an aqueous solution containing 3 g / L glacial acetic acid;

[0098] Washing: Rinse with cold water until neutral;

[0099] Finally, an oiling treatment is performed. Based on the total mass of cotton fibers, 6 wt% of a fluorine-free water-repellent agent and 1 wt% of a softener are added, and the mixture is kept at 50°C for 25 minutes. The fluorine-free water-repellent agent is Transfar's TF-50GS, and the softener is Tona Chemical's OE-T.

[0100] Cotton blend: 70% ordinary cotton fiber and 30% water-repellent cotton fiber, of which 10% of the ordinary cotton fiber is dyed fiber, and light linen gray yarn is produced according to the colored spinning process. The water-repellent cotton raw material is 328B grade roller-processed fine cotton treated with water-repellent auxiliaries;

[0101] Opening: Water-repellent cotton and ordinary cotton raw materials are thoroughly mixed evenly through the opening process. It adopts Huafu's unique color spinning opening process, which makes the raw materials both fully mixed and loosened to remove impurities.

[0102] Carding: The mixed raw materials are further opened, carded and impurities are removed using an FA201 carding machine to produce a sliver with a yield of 20.5g / 5m.

[0103] Drawing: The green sliver is pre-drawn using an FA306 drawing frame, and then the pre-drawn sliver is drawn a second and third time using a D35C to make the fiber bundles of the sliver fully parallel and straight, finally obtaining a 20.5g / 5m sliver;

[0104] Roving: The sliver is drawn and stretched using an FA494 roving frame to produce roving with a basis weight of 3.0g / 10m and a twist of 5.75.

[0105] Fine yarn: FA506 fine yarn machine is used, ordinary ring spinning process is adopted, yarn count is 50S1, twist is 112 twists / 10cm;

[0106] Example 4: Water-repellent cotton greige yarn method. Using 100% water-repellent cotton fiber, water-repellent greige yarn is prepared by following the conventional spinning process, including opening, carding, drawing, roving, spinning, and self-winding.

[0107] Example 5: Method 2 for producing water-repellent cotton plain yarn

[0108] Using 100% water-repellent white cotton fiber, water-repellent raw yarn is first prepared, and then dyed through a tube dyeing process. The pretreatment dyeing process steps are: scouring - dyeing - color fixing - oiling (water-repellent finishing) - drying. The scouring process uses No. 3 refining agent: 1.5g / L, caustic soda flakes: 3g / L, 85℃*30min. The dyeing process uses conventional reactive dyes, with a liquor ratio of 1:10. The dye formulation is: Reactive Orange ED-2R 1.5wt% and Reactive Red LC-DB 0.9wt%. The dye is poured into the auxiliary dyeing tank, and the oiling process has a liquor ratio of 1:10. The dye is soluble at 50℃ for 10 minutes, linearly injected, and kept at the temperature for 5 minutes. 2wt% sodium sulfate is added from the auxiliary tank, and the sodium sulfate is dissolved in water and run for 5 minutes. 3wt% sodium sulfate is added every 10 minutes. Then the temperature is raised to 65℃ and held for 5 minutes. 1.5wt% soda ash is added, followed by 3.5wt% soda ash after 10 minutes, and the remaining 5wt% soda ash is added after another 10 minutes. The temperature is maintained for 65 minutes and then drained. The product is washed once with water, 2.0% wt% acetic acid is added, and the product is run at 60℃ for 30 minutes. The product is washed twice with water, and 2.0 g / L soaping agent M916 is added. The product is run at 98℃ for 10 minutes and washed twice with water. The liquor ratio for the washing process is 1:20.

[0109] Finally, an oiling treatment is performed. Based on the quality of the cotton fibers, 1 wt% of softener is added during the oiling process of the yarn package, and the mixture is kept at 50°C for 25 minutes. The softener is OE-T from Tona Chemical.

[0110] Example 6: Hydrophilic yarn spinning production method:

[0111] The preparation process of moisture-wicking and quick-drying cotton fiber includes pretreatment: the cotton fiber is scouring in a pretreatment aqueous solution, with 3 wt% H2O2, 1 wt% scouring agent and 0.8 wt% sodium hydroxide added based on the total mass of the cotton fiber, and scouring at 100°C for 60 minutes; the scouring agent is a mixture of fatty acid methyl ester polyoxyethylene ether and sodium dodecyl sulfonate in a mass ratio of 1:1.

[0112] Hot wash: Wash at 80℃ for 20 minutes;

[0113] The process involves acidification and deoxygenation treatment, specifically immersion in an aqueous solution containing glacial acetic acid and an oxygen-removing enzyme; the acetic acid concentration is 3 g / L.

[0114] The content of deoxygenase was 3 g / L; the treatment temperature was 40℃ and the treatment time was 20 min;

[0115] Washing: Wash with water until neutral;

[0116] Finally, an oiling treatment is performed. Based on the total mass of cotton fibers, 0.5 wt% of amino-modified dimethylsiloxane-polyether copolymer and 1 wt% moisture-absorbing and quick-drying finishing agent HSD are added, and the mixture is kept at 50°C for 20 minutes.

[0117] Example 7: Hydrophilic yarn spinning process steps:

[0118] Cotton blending: 100% moisture-wicking and quick-drying cotton fibers are blended according to the color ratio of yarn spinning and then produced using a full blending process.

[0119] Cleaning: Selected moisture-absorbing and quick-drying cotton fibers are processed through a disc cotton picker, a multi-compartment cotton blender, a cotton opening and mixing machine, a cotton feeding machine, and a lap forming machine to fully open, remove impurities, and mix evenly, ultimately producing cotton laps of uniform thickness and appropriate size. The cotton lap weight is 420g / m and the cotton lap length is 61 yards.

[0120] Carding: The mixed raw materials are further opened, carded and impurities are removed using an FA201 carding machine to produce a raw sliver with a weight of 20g / 5m.

[0121] Drawing: The green strips are pre-drawn and second-drawn using a D81S drawing machine, followed by a final drawing using a self-regulating leveling machine. These three drawing processes further improve the straightness and parallelism of the strips, thus enhancing their quality. The final weight of the cooked strips after three drawing processes is 18g / 5m.

[0122] Roving: The sliver is drawn and stretched using an FA494 roving frame, with a basis weight of 5.0 g / 10 m and a twist of 4.91.

[0123] Fine spinning: FA506 fine spinning machine is used, with compact Siro spinning process, yarn count 30S1, and twist of 78 twists / 10cm.

[0124] Example 8: Method for producing hydrophilic raw yarn

[0125] Made from 100% moisture-wicking and quick-drying white cotton, the yarn is spun according to conventional processes, including opening, carding, drawing, roving, spinning, and self-winding, resulting in a hydrophilic raw yarn.

[0126] Example 9: Method for producing hydrophilic pure color yarn

[0127] First, hydrophilic raw yarn is prepared using 100% moisture-absorbing and quick-drying white cotton. Then, the hydrophilic raw yarn is dyed using a tube dyeing process. The pretreatment steps are: scouring - dyeing - color fixing - oiling (moisture-absorbing and quick-drying finishing agent) - drying. The scouring process is as follows: No. 3 refining agent: 2.0g / L, caustic soda flakes: 4g / L, 85℃*30min. The dyeing process uses conventional reactive dyes, with a liquor ratio of 1:10. The dye formulation is: Reactive Orange ED-2R 1.5wt% and Reactive Red LC-DB 0.9wt%. The dye is poured into the auxiliary dyeing tank, and the oiling process has a liquor ratio of 1:10. The dye is soluble at 50℃ for 10 minutes, linearly injected, and kept at the temperature for 5 minutes. 2wt% sodium sulfate is added from the auxiliary tank, and the sodium sulfate is dissolved in water and run for 5 minutes. 3wt% sodium sulfate is added every 10 minutes. Then the temperature is raised to 65℃ and held for 5 minutes. 1.5wt% soda ash is added, followed by 3.5wt% soda ash after 10 minutes, and the remaining 5wt% soda ash is added after another 10 minutes. The temperature is maintained for 65 minutes and then drained. The product is washed once with water, 2.0% wt% acetic acid is added, and the product is run at 60℃ for 30 minutes. The product is washed twice with water, and 2.0 g / L soaping agent M916 is added. The product is run at 98℃ for 10 minutes and washed twice with water. The liquor ratio for the washing process is 1:20.

[0128] The above embodiments are merely illustrative of the principles and effects of the present invention and are not intended to limit the invention. Any person skilled in the art can modify or alter the above embodiments without departing from the spirit and scope of the present invention. Therefore, all equivalent modifications or alterations made by those skilled in the art without departing from the spirit and technical concept disclosed in the present invention should still be covered by the claims of the present invention.

Claims

1. A method for preparing a fabric with unidirectional moisture-wicking effect, characterized in that... The fabric includes a double-sided, double-layer structure. The outer layer is a hydrophilic layer formed by hydrophilic yarns, and the inner layer is a moisture-wicking layer formed by water-repellent yarns. The outer and inner layers are connected by weave points of the hydrophilic yarns in the outer layer, forming uniformly distributed hydrophilic and moisture-wicking points on the water-repellent surface. The specific steps are as follows: On a double-sided machine, the upper needles are arranged in rows 1 and 2 with varying heights, and the lower needles are arranged in rows 3, 1, 2, and 1. Four needles per row cycle, eight patterns per knitting cycle; The first pattern is knitted with all-cotton hydrophilic yarn, with all purl stitches coming out to form a loop and the second row of knit stitches coming out to form a loop. The second pattern uses all-cotton water-repellent yarn for knitting only in the knit stitches, with all stitches coming out to form loops; The third pattern uses all-cotton hydrophilic yarn for knitting only with purl stitches, and all stitches are brought out to form loops. The fourth module is the same as the second module; The fifth pattern is knitted with all-cotton hydrophilic yarn, with all purl stitches coming out to form a loop and the third purl stitch coming out to form a loop; The sixth mock exam is the same as the second mock exam; The seventh module is the same as the third module; The eighth model is the same as the second model; One side of the raw fabric has both water-repellent yarn and hydrophilic yarn, with water-repellent yarn accounting for 7 / 8 and hydrophilic yarn accounting for 1 / 8. The hydrophilic yarn forms a uniform and dense dot pattern, while the other side is 100% hydrophilic yarn. When making finished garments, the water-repellent side is used as the inner layer.

2. The method for preparing a woven fabric with unidirectional moisture-wicking effect according to claim 1, characterized in that... The distribution range of the hydrophilic moisture-wicking points is 4-50 per square centimeter.

3. The method for preparing a woven fabric with unidirectional moisture-wicking effect according to claim 1, characterized in that... The fabric with unidirectional moisture-wicking effect has a dot-connected double-sided double-layer structure.

4. The method for preparing a woven fabric with unidirectional moisture-wicking effect according to claim 3, characterized in that... The dot-connected double-sided double-layer fabric structure includes dot-connected double-sided double-layers with various sizes and spacings.

5. The method for preparing a woven fabric with unidirectional moisture-wicking effect according to claim 1, characterized in that... The moisture-wicking layer is woven from water-repellent yarn, and the yarn material is selected from one or more of 100% cotton, polyester, nylon, and acrylic.

6. The method for preparing a woven fabric with unidirectional moisture-wicking effect according to claim 1, characterized in that... The hydrophilic layer is woven from hydrophilic yarns. The raw materials for the hydrophilic yarns are selected from one or more of the following cellulose fibers: 100% cotton, viscose, modal, Tencel, and bamboo fiber, or blended cellulose fibers with polyester or nylon.

7. The method for preparing a woven fabric with unidirectional moisture-wicking effect according to claim 3, characterized in that... The fabric is a double-sided, double-layer structure. The outer layer is a hydrophilic layer formed by hydrophilic yarns, and the inner layer is a moisture-wicking layer formed by water-repellent yarns. The outer and inner layers are connected by weft dots of the outer layer's hydrophilic yarns, forming uniformly distributed hydrophilic and moisture-wicking dots on the water-repellent surface. The dot-connected double-sided, double-layer fabric structure includes dot-connected double-sided, double-layer fabrics with various sizes and spacings.

8. The method for preparing a woven fabric with unidirectional moisture-wicking effect according to claim 7, characterized in that... The water-repellent yarn can be produced using the following three methods: A. Water-repellent colored yarn is prepared by modifying loose fibers to be water-repellent and then spinning them after color mixing; B. Water-repellent raw yarn is prepared by directly spinning loose fibers after water-repellent modification treatment; C. The water-repellent raw yarn prepared by water-repellent modification of loose fibers is then dyed in packages to produce water-repellent solid color yarn.

9. The method for preparing a woven fabric with unidirectional moisture-wicking effect according to claim 8, characterized in that... The hydrophilic yarn can be produced using the following three methods: A. Hydrophilic colored yarn is prepared by hydrophilic modification of loose fibers followed by color mixing and spinning. B. Hydrophilic raw yarn is prepared by directly spinning loose fibers after hydrophilic modification treatment; C. The hydrophilic raw yarn prepared by hydrophilic modification of loose fibers is then dyed in packages to produce hydrophilic solid color yarn.

10. The method for preparing a woven fabric with unidirectional moisture-wicking effect according to claim 9, characterized in that... After the fabric is woven from hydrophilic and water-repellent yarns, it still needs to be refined and dyed to achieve a one-way moisture-wicking effect.

11. The method for preparing a woven fabric with unidirectional moisture-wicking effect according to claim 9, characterized in that... Using hydrophilic and water-repellent yarns, the fabric does not require subsequent dyeing and finishing after weaving. It only needs a simple hot wash with soap and oil to remove oil, and the fabric will have a one-way moisture-wicking effect.

12. The method for preparing a woven fabric with unidirectional moisture-wicking effect according to claim 9, characterized in that... The fabric is woven from hydrophilic and water-repellent yarns, requiring no further dyeing or finishing. It only needs a simple hot wash with soap and oil to remove the oil, and the fabric will have a one-way moisture-wicking effect.

13. A method for preparing a woven fabric with unidirectional moisture-wicking effect, characterized in that... The fabric has a double-sided, double-layer structure. The outer layer is a hydrophilic layer made of hydrophilic yarns, and the inner layer is a moisture-wicking layer made of water-repellent yarns. The outer and inner layers are connected by a combination of large-pitch bird's-eye and dot-matrix joints. The specific steps are as follows: On the double-sided machine, the upper needles are arranged in rows 1 and 2 with varying heights, and the lower needles are arranged in rows 3, 1, 1, 1, 1, 1, 1, 2, 1, 1, 1, 1, 1. A 12-needle row cycle, and a 24-pattern knitting cycle; The first pattern is knitted with all-cotton hydrophilic yarn, with all the purl stitches coming out to form a loop and the knit stitches coming out halfway through the second row to form a loop; The second pattern uses all-cotton water-repellent yarn for knitting only in the knit stitches, with all stitches coming out to form loops; The third pattern is knitted with all-cotton hydrophilic yarn, with all purl stitches coming out to form a loop and the second row of knit stitches coming out to form a loop. The fourth module is the same as the second module; Patterns 5, 7, 9, and 11 are knitted using all-cotton hydrophilic yarn with only purl stitches, and all stitches are looped. Models 6, 8, 10, and 12 are the same as Model 2; The thirteenth pattern is knitted with all-cotton hydrophilic yarn, with all the purl needles coming out to form a loop and the knit needles coming out on the third and a half rows to form a loop; The fourteenth model is the same as the second model; The fifteenth pattern is knitted with all-cotton hydrophilic yarn, with all purl stitches coming out to form a loop and the third row of knit stitches coming out to form a loop. The sixteenth model is the same as the second model; Models 17, 19, 21, and 23 are the same as Model 5; The eighteenth, twentieth, twenty-twoth, and twenty-fourth models are the same as the second model; One side of the fabric has both water-repellent yarn and hydrophilic yarn, with water-repellent yarn accounting for 17 / 18 and hydrophilic yarn accounting for 1 / 18. The hydrophilic yarn forms a scattered small number of dots, while the other side of the hydrophilic yarn forms a scattered small number of bird's-eye patterns. When making the finished garment, the water-repellent yarn side is used as the inner layer.

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