All-cotton moisture-absorbing and quick-drying yarn, production method thereof and socks made of all-cotton moisture-absorbing and quick-drying yarn

Abstract

The invention provides an all-cotton moisture-absorbing and quick-drying yarn, the all-cotton moisture-absorbing and quick-drying yarn is of a skin-core structure and is subjected to moisture-absorbing and quick-drying finishing, and in the skin-core structure, a core layer is an all-cotton water-repellent spun yarn of a double-helix structure; and the skin layer is all-cotton roving coated on the surface of the core layer. The all-cotton moisture-absorbing and quick-drying yarn not only retains the skin-friendly performance of all-cotton, but also has good moisture-absorbing and quick-drying performance and cool feeling performance.

Description

TECHNICAL FIELD

[0001] The present application relates to the field of textiles, in particular to a full cotton moisture absorption and quick-drying yarn, a production method thereof and socks formed therefrom. BACKGROUND

[0002] Traditional full cotton textiles are widely used due to their excellent skin-friendliness and moisture absorption, but in high humidity or sports scenarios, the problem of serious water retention and slow drying speed is particularly prominent. For example, full cotton socks are prone to remain in a wet state for a long time after absorbing sweat, causing the wearer to feel sticky and uncomfortable, and the humid environment is prone to breed bacteria, affecting health.

[0003] Currently, to improve the quick-drying property, a scheme of blending chemical synthetic fibers (such as polyester, nylon) with cotton fibers is generally adopted, but such a method sacrifices the natural skin-friendliness and air permeability advantages of cotton fibers, and chemical fibers are prone to cause static electricity, stuffiness and other problems. In the prior art, cotton fabrics are given quick-drying function through finishing process, but there are defects such as complex processing flow, poor washability or affecting the original mechanical properties of cotton fibers.

[0004] Therefore, how to develop a full cotton-based moisture absorption and quick-drying yarn with a cool touch and its products while retaining the natural properties of full cotton has become a technical problem to be solved. SUMMARY

[0005] In view of the above-mentioned shortcomings of the prior art, the purpose of the present application is to provide a full cotton moisture absorption and quick-drying yarn, a production method thereof and socks formed therefrom, which solves the problem of poor quick-drying property of full cotton yarn and fabric in the prior art and cannot simultaneously consider cool comfort.

[0006] To achieve the above-mentioned purposes and other related purposes, the present application is obtained by including the following technical solutions.

[0007] The present application provides a full cotton moisture absorption and quick-drying yarn in a first aspect, which is in a skin-core structure and is subjected to moisture absorption and quick-drying finishing, wherein in the skin-core structure, the core layer is a full cotton water-repellent yarn with a double helix structure; and the skin layer is a full cotton roving wrapped on the surface of the core layer.

[0008] Preferably, the full cotton water-repellent yarn with a double helix structure is obtained by the following method: cotton fibers are subjected to cleaning, carding, drawing, roving and spinning.

[0009] In a further preferred embodiment, the spinning adopts a mode of feeding two rovings into the ring spinning, and is formed by drafting and twisting through a twisting forming mechanism.

[0010] In a preferred embodiment, for the preparation of the full cotton water-repellent spun yarn of double helix structure, the weight of the sliver before drawing is 15g / 5m~21g / 5m; the weight of the roving after drawing is 15.0g / 5m~21.0g / 5m.

[0011] In an embodiment of the preparation of the core layer spun yarn, the twist factor of the roving is 85~125, and the weight is 3.0g / 10m~10g / 10m. For example, the twist factor of the roving is 100, 105, 110 or 115.

[0012] In an embodiment of the preparation of the core layer spun yarn, the count of the spun yarn as the core layer is 30~120S, and the twist factor is 300~450. For example, the twist factor can be 350, 360, 370, 380, 390 or 400.

[0013] In an embodiment of the preparation of the core layer spun yarn, the cotton fiber of the core layer has a Ma value less than 3.7. For example, the Ma value can be 3.6, 3.5, 3.3, 3.2, 3.1 or 3.0.

[0014] Preferably, the amount of the cotton fiber of the core layer is 30wt%~60wt% based on the mass of the full cotton moisture-absorbing and quick-drying yarn.

[0015] In a preferred embodiment, the full cotton roving coated on the surface of the core layer is obtained by the following method: cotton fiber is subjected to cleaning, carding, drawing and roving.

[0016] In a preferred embodiment of the preparation of the full cotton roving coated on the surface of the core layer, the weight of the roving after drawing is 15.0g / 5m~21.0g / 5m.

[0017] In a preferred embodiment of the preparation of the full cotton roving coated on the surface of the core layer, the twist factor of the roving is 85~125, and the weight is 3.0g / 10m~10g / 10m.

[0018] In a preferred embodiment of the preparation of the full cotton roving coated on the surface of the core layer, the cotton fiber of the skin layer has a Ma value greater than or equal to 3.7. In a preferred embodiment, the cotton fiber of the skin layer has a Ma value greater than or equal to 4.2.

[0019] In a preferred technical solution, the amount of the cotton fiber of the skin layer is 40wt%~70wt% based on the mass of the full cotton moisture-absorbing and quick-drying yarn.

[0020] In a preferred technical solution, the count of the full cotton moisture-absorbing and quick-drying yarn is 16~60S, and the twist factor is 220~350. Preferably, the twist factor is 260, 270, 280, 290 or 300.

[0021] The full cotton moisture absorption and quick-drying yarn of the application is of a skin-core structure, adopts low torque and low twist, on the one hand, reduces the fiber arrangement tightness on the yarn surface, the yarn is loose, the pores between fibers are large and many, the contact area with water is large, the water molecules can quickly enter the inside of the yarn, and the moisture absorption speed is improved; on the other hand, the moisture moves relatively easily in the loose yarn, can quickly migrate to the surface of the yarn to evaporate, and the larger pores are beneficial to air circulation, accelerate the evaporation of water vapor, and the fabric drying speed is faster.

[0022] The raw cotton fiber used in the application includes but is not limited to Xinjiang cotton, American cotton, Brazilian cotton and Australian cotton, etc.

[0023] The micronaire value in the application is tested according to GB / T 20392-2023 Cotton Fiber Physical Property Test Method Large Capacity Fiber Tester.

[0024] The smaller the micronaire value of the cotton fiber, the smaller the fineness of the cotton fiber, the smaller the diameter of the spun core layer yarn, and the easier to be coated by the outer fiber; the larger the micronaire value, the thicker the fiber, the thicker the cell wall, the relatively smaller the hollow, the relatively weaker the water absorption capacity, the shorter the distance of the moisture migration in the fiber to the surface, and the faster the water vapor can be formed on the fiber surface and evaporated, and at the same time, the relatively smaller and uniform gap between the fibers can more orderly guide the water vapor to be discharged when the air circulates.

[0025] In one embodiment, the amount of the core layer cotton fiber is 30wt% to 60wt%, and the amount of the skin layer cotton fiber is 40wt% to 70wt%, based on the mass of the full cotton moisture absorption and quick-drying yarn.

[0026] In a preferred embodiment, the amount of the core layer cotton fiber is 30wt% to 40wt%, 40wt% to 50wt%, 50wt% to 60wt%, such as 30wt%, 35wt%, 40wt%, 45wt%, 50wt%, 55wt%, 60wt%, and the amount of the skin layer cotton fiber is 40wt% to 50wt%, 50wt% to 60wt%, 60wt% to 70wt%, such as 40wt%, 45wt%, 50wt%, 55wt%, 60wt%, 65wt%, 70wt%, based on the mass of the full cotton moisture absorption and quick-drying yarn.

[0027] In one embodiment, the twist direction of the full cotton moisture absorption and quick-drying yarn is Z or S twist, which is opposite to the twist direction of the full cotton water-repellent fine yarn of the core layer.

[0028] The inner and outer layer fibers are crosswise staggered, which maximizes the retention of the inner layer yarn groove, forms a larger moisture conducting space, expands the water storage space and evaporation area.

[0029] In a preferred embodiment, the full cotton water repellent spun yarn of the core layer is obtained after water repellent finishing, which comprises: pre-treatment, hot washing, over-acid, water washing and oiling treatment. After water repellent finishing, a thin film with water repellent effect is formed on the surface of the yarn, and at the same time the structure of the yarn is solidified and the stiffness of the yarn is enhanced.

[0030] In a preferred embodiment of the water repellent finishing, the oiling treatment uses an oiling agent containing a water repellent agent.

[0031] In a preferred embodiment of the water repellent finishing, the pre-treatment is scouring in an aqueous solution at 50-100°C for 10-30 min. In an embodiment, based on the mass of the raw cotton fiber as the core layer, in the pre-treatment, the aqueous solution contains 1-5 wt% of a refining agent and 1-10 wt% of sodium hydroxide; the bath ratio is 1:5-20. Preferably, the refining agent is a mixture of fatty acid methyl ester polyoxyethylene ether and sodium alkyl sulfonate, which can be specifically sodium dodecyl sulfonate. Preferably, the mass ratio of fatty acid methyl ester polyoxyethylene ether and sodium alkyl sulfonate is 1:(0.5-5). More preferably, the mass ratio of fatty acid methyl ester polyoxyethylene ether and sodium alkyl sulfonate is 1:(1-3), such as 1:1, 1:2 or 1:3.

[0032] In the processing and finishing process of the present application, the bath ratio is 1:5-20, preferably, the bath ratio can be 1:8-18. Such as 1:8, 1:9, 1:10, 1:11, 1:12, 1:13, 1:14, 1:15, 1:16, 1:17 or 1:18.

[0033] In a preferred embodiment of the water repellent finishing, the hot washing is washing with water at 60-90°C for 20-60 min. The hot washing temperature can be 60°C, 65°C, 70°C, 75°C, 80°C, 85°C, 90°C. Preferably, the washing time is 20 min, 25 min, 30 min, 35 min, 40 min, 45 min, 50 min, 55 min or 60 min.

[0034] In a preferred embodiment of the water repellent finishing, the over-acid is dipping treatment with 0.3-2 g / L of an aqueous acetic acid solution at 35-50°C for 20-60 min. In a specific embodiment, the concentration of the aqueous acetic acid solution is 0.3 g / L, 0.5 g / L, 1 g / L, 1.5 g / L or 2 g / L. Preferably, the dipping temperature is 35°C, 40°C, 45°C or 50°C. In a specific embodiment, the dipping treatment time is 20 min, 25 min, 30 min, 35 min, 40 min, 45 min, 50 min, 55 min or 60 min.

[0035] In one preferred embodiment of the water repellent finish, the water washing is carried out by immersing the fabric in tap water at 35-50°C for 20-60 minutes. Preferably, the temperature of the water is 35°C, 40°C, 45°C or 50°C. In one embodiment, the fabric is immersed for 20 minutes, 25 minutes, 30 minutes, 35 minutes, 40 minutes, 45 minutes, 50 minutes, 55 minutes or 60 minutes.

[0036] In one preferred embodiment of the water repellent finish, the oiling treatment is carried out by immersing the fabric in an oiling agent at 40-80°C for 20-60 minutes. Preferably, the oiling agent contains 2wt%-12wt% water repellent agent, 0.5wt%-5wt% softening agent, 0.5wt%-5wt% lofting agent, and the rest is water, with a bath ratio of 1:5-20. More preferably, the oiling agent contains 2wt%-12wt% water repellent agent, 1wt%-3wt% softening agent, 1wt%-3wt% lofting agent, based on the total mass of the raw cotton fibers of the core layer. The amount of water repellent agent is 2wt%, 3wt%, 4wt%, 5wt%, 6wt%, 7wt%, 8wt%, 9wt%, 10wt%, 11wt% or 12wt%. The amount of softening agent is 1wt%, 1.5wt%, 2wt%, 2.5wt% or 3wt%. The amount of lofting agent is 1wt%, 1.5wt%, 2wt%, 2.5wt% or 3wt%.

[0037] In one preferred embodiment of the oiling agent, the water repellent agent comprises a fluorine-free water repellent agent or a fluorine-containing water repellent agent; the fluorine-free water repellent agent is selected from one or more of TH-501A from Tianhua, DM-3696 from Dema, PHOBOL RSH from Huntsman and RUCO-DYR ECO from Rudolf; the fluorine-containing water repellent agent is selected from one or more of C6 fluorine-containing water repellent agent HKGUARD HG-6457 from Zhejiang Huikai New Material, fluorine-containing organic compound HS1100 from Shanghai Hete Chemical Co., Ltd., six-carbon water repellent AG-E7500 from Japan Asahi Glass, and FCB060 from Guangzhou Lianzhuang Technology Co., Ltd.

[0038] In one preferred embodiment of the oiling agent, the softening agent is selected from one or more of amido hexyl-polyethoxymethyl sulfate, amino-modified dimethyl silicone-polyether copolymer, dimethyl-3-[(2-aminoethyl)amino]propyl methyl siloxane, and dimethyl-3-[(2-aminoethyl)amino]propyl methyl polysiloxane.

[0039] In one preferred embodiment of the oiling agent, the lofting agent is a mixture of silicone and one or more selected from polysiloxane, fatty alcohol and fatty amine.

[0040] In a preferred embodiment, the moisture wicking finish comprises scouring and bleaching in a moisture wicking aqueous solution at 60-90 °C for 10-60 min; the moisture wicking aqueous solution comprises 0.5-2 wt% of a refining agent or oil removing agent, 0.5-2 wt% of sodium hydroxide, and no more than 8 wt% of hydrogen peroxide, based on the mass of the outer layer of cotton fibers; and the bath ratio is 1:5-20. In a more preferred embodiment of the moisture wicking aqueous solution, the refining agent or oil removing agent is a mixture of fatty acid methyl ester polyoxyethylene ether and sodium alkyl sulfonate. Preferably, the sodium alkyl sulfonate is sodium dodecyl sulfonate. Preferably, the mass ratio of the fatty acid methyl ester polyoxyethylene ether and the sodium alkyl sulfonate is 1:(0.5-5). More preferably, the mass ratio of the fatty acid methyl ester polyoxyethylene ether and the sodium alkyl sulfonate is 1:(1-3), such as 1:1, 1:2, or 1:3.

[0041] In a more preferred embodiment, the moisture wicking finish further comprises a peracid deoxidizing treatment, a water washing, and a moisture wicking treatment. More preferably, the acid in the peracid deoxidizing treatment is glacial acetic acid, the temperature is 40-80 °C, and the treatment time is 10-20 min. More preferably, the water washing conditions are the same as those described above for the water repellent finish. Preferably, the moisture wicking treatment uses a mixed system comprising a softening agent, a lofting agent, and a moisture wicking finishing agent at 40-60 °C for 20-60 min.

[0042] In a preferred embodiment, in the mixed system, the mass ratio of the softening agent is 1 wt%-5 wt%, the mass ratio of the lofting agent is 0.5 wt%-5 wt%, and the mass ratio of the moisture wicking finishing agent is 1 wt%-5 wt%, based on the mass of the raw cotton fibers as the skin layer; and the bath ratio is 1:5-1:20. More preferably, the mass ratio of the softening agent is 1 wt%-3 wt%, the mass ratio of the lofting agent is 1 wt%-3 wt%, and the mass ratio of the moisture wicking finishing agent is 1 wt%-5 wt%, based on the mass of the raw cotton fibers as the skin layer.

[0043] In a preferred embodiment of the moisture wicking treatment, the softening agent is selected from one or more of amido hexyl-polyethyloxymethyl sulfate, amino-modified dimethicone-polyether copolymer, dimethyl-3-[(2-aminoethyl)amino]propyl methyl siloxane, and dimethyl-3-[(2-aminoethyl)amino]propyl methyl polysiloxane.

[0044] In a preferred embodiment of the moisture wicking treatment, the lofting agent is a mixture of siloxane and one or more selected from polysiloxane, fatty alcohol, and fatty amine.

[0045] In a preferred embodiment of the moisture absorption and quick drying treatment, the moisture absorption and quick drying finishing agent is a mixed oil system with polyether polyester compound and / or carboxylic acid ethoxy compound as main components. Preferably, the moisture absorption and quick drying finishing agent is selected from PM-226, DM-3402, MJ-8307, MT-110A, ULTRATEX HSD, and one or more of TF-620.

[0046] The yarn after moisture absorption and quick-drying treatment has excellent water absorption performance. According to the test method of water drop diffusion time in GB / T 21655.1-2023 "Evaluation of moisture absorption and quick-drying properties of textiles Part 1: Single combination test method", the water drop can be quickly transferred to the inside of the yarn within 4 seconds at the moment of contact.

[0047] A second aspect of the present invention provides a method for producing pure cotton moisture-absorbing quick-drying yarn, comprising: using the above-mentioned pure cotton water-repellent spun yarn and pure cotton coarse yarn as a skin layer to form a composite core-spun structure.

[0048] According to the production method described above, the composite core-spun structure is formed by uniformly covering the skin layer on the surface of the core layer through a ring-spun composite core-spun spinning device.

[0049] According to the production method described above, the ring spinning composite core-spun yarn device includes a ring spinning machine and a filament core-spun yarn device.

[0050] According to the production method described above, the ring spinning frame is sequentially provided with a feeding unit, a drafting unit, and a twisting and forming mechanism along the yarn processing direction. The drafting unit includes a back roller and its matching back top roller, a middle roller and its matching upper and lower pins, and a front roller and its matching front top roller.

[0051] According to the production method described above, along the processing direction of the yarn, the filament core-spun spinning device is provided with a filament storage platform, a filament tension roller, a leather roller and a yarn guide component in sequence.

[0052] According to the production method described above, the filament core-spun spinning device also includes a tension control component, which is used to detect the rotation speed of the front roller, thereby controlling and adjusting the rotation speed of the core filament tension roller to control the pre-drafting multiple of the filament.

[0053] According to the production method described above, the core layer can be unwound from the yarn bobbin on the storage platform, pass through the upper wire guide hook, the lower wire guide hook, the wire guide roller and the wire guide leather roller of the tension control component, and the wire guide component, and merge with the stretched outer fiber at the jaws of the front roller. The inner layer of yarn is evenly covered by the outer layer of cotton fiber, and the wire guide roller and the front roller rotate in the same direction and speed.

[0054] According to the production method described above, the full cotton moisture absorption and quick-drying yarn is formed by the skin layer passing through the back roller, the middle roller, and the front roller nip, and being uniformly coated on the surface by the skin layer, and then being twisted and formed by the twisting forming mechanism.

[0055] According to the production method described above, the pre-drafting multiple of the core layer yarn is 1-1.02 times. For example, the pre-drafting multiple is 1 times, 1.01 times, or 1.02 times.

[0056] The third aspect of the present application discloses a fabric woven by the yarn described above.

[0057] Preferably, the fabric contains at least 50wt% of the full cotton moisture absorption and quick-drying yarn described above. For example, the fabric can contain 50wt%, 60wt%, 70wt%, 80wt%, 85wt%, 90wt%, 95wt%, or 100wt% of the full cotton moisture absorption and quick-drying yarn.

[0058] Preferably, the moisture absorption and quick-drying performance test is carried out according to GB / T 21655.1-2023 “Textiles-determination of moisture management properties-part 1: single unit combination test method”.

[0059] Preferably, the instant contact cool feeling performance test is carried out according to GB / T 35263-2017 “Textiles-determination and evaluation of instant contact cool feeling performance”.

[0060] Preferably, the instant contact cool feeling coefficient of the fabric described above is 0.25J / (cm 2 ·s) or more.

[0061] The fourth aspect of the present application discloses a sock made of the full cotton moisture absorption and quick-drying yarn and the polyamide filament described above.

[0062] Preferably, the instant contact cool feeling coefficient of the sock is 0.15J / (cm 2 ·s) or more. More preferably, the instant contact cool feeling coefficient of the sock is 0.19J / (cm 2 ·s) or more.

[0063] Preferably, the sock includes a cuff, a leg, a heel, a sole, a top, a toe, and a sole-top connecting layer.

[0064] Preferably, the full cotton moisture absorption and quick-drying yarn is 16S-60S. For example, the full cotton moisture absorption and quick-drying yarn can be 20S, 25S, 30S, 35S, 40S, 45S, 50S, 55S, or 60S.

[0065] Preferably, the nylon filament is a 30D-100D DTY filament, such as 30D, 35D, 40D, 45D, 50D, 55D, 60D, 65D, 70D, 75D, 80D, 85D, 90D, 95D or 100D.

[0066] Preferably, the cotton moisture-absorbing and quick-drying yarn is located on the outside of the socks, and the nylon filament is located on the inside of the socks. The nylon filament gives the socks wear resistance and elasticity during exercise.

[0067] Preferably, the pure cotton moisture-absorbing quick-drying yarn and the nylon filament are fed simultaneously for weaving; the weaving can be carried out in a composite manner of multiple tissue structures.

[0068] More preferably, the sock opening and the sock shaft are designed with rib weave, which gives the socks good elasticity; the heel, sock surface and sock toe are designed with plain weave, and the fabric contact surface is relatively flat, which reduces friction on the heel and toes; the instep is designed with mesh weave, and sweat is transmitted to the outer layer through the gaps in the inner layer of the sock, absorbed by the moisture-absorbing and quick-drying yarn in the outer layer, and quickly diffuses and evaporates to take away heat, producing a cool feeling; the sock surface and sole connecting layer are designed with rib weave, and the fabric can stretch and contract freely as the shape of the instep changes.

[0069] More preferably, the socks have a transverse density of 25 to 35 threads per inch and a longitudinal density of 40 to 50 threads per inch.

[0070] Preferably, the mass proportion of the pure cotton moisture-absorbing and quick-drying yarn in the socks is 66wt% to 91wt%, and the mass proportion of the nylon filament is 9wt% to 34wt%. For example, the mass proportion of the pure cotton moisture-absorbing and quick-drying yarn in the socks is 70wt%, 75wt%, 80wt%, 85wt% or 90wt%.

[0071] The beneficial effects of the above technical solution of the present invention are:

[0072] The pure cotton moisture-absorbing and quick-drying yarn of the present invention not only retains the skin-friendliness of pure cotton, but also has good moisture-absorbing and quick-drying performance and cooling performance. BRIEF DESCRIPTION OF THE DRAWINGS

[0073] Figure 1 Shown is a schematic diagram of a ring-spun composite core-spun yarn spinning device and process for producing the all-cotton moisture-absorbing and quick-drying yarn of the present invention;

[0074] Figure 1 The accompanying drawings are numerals in the figure: 1 is the core yarn of the pure cotton moisture-absorbing and quick-drying yarn; 2 is the upper and lower tension disks; 3 is the wire guide hook; 4 is the tension control component; 5 is the skin roving of the pure cotton moisture-absorbing and quick-drying yarn; 6 is the upper yarn guide rod; 7 is the lower yarn guide rod; 8 is the double-hole bell mouth; 9 is the back roller and the back leather roller; 10 is the middle roller and the upper and lower pins; 11 is the front roller and the front leather roller; 14 is the wire guide wheel.

[0075] Figure 2 Figure 1 shows a schematic diagram of the cross section of the full cotton moisture absorption and quick-drying yarn of the present application;

[0076] Figure 2 Figure 1 shows a schematic diagram of the cross section of the full cotton moisture absorption and quick-drying yarn of the present application;

[0077] Figure 3 Figure 1 shows a schematic diagram of the cross section of the full cotton moisture absorption and quick-drying yarn of the present application;

[0078] Figure 3 Figure 1 shows a schematic diagram of the cross section of the full cotton moisture absorption and quick-drying yarn of the present application; DETAILED DESCRIPTION

[0079] The following will illustrate the embodiments of the present application by specific examples, and those skilled in the art can easily understand other advantages and effects of the present application from the disclosure of the present application.

[0080] Before further describing the embodiments of the present application, it should be understood that the scope of protection of the present application is not limited to the following specific embodiments; it should also be understood that the terms used in the embodiments of the present application are for the purpose of describing the specific embodiments, and are not intended to limit the scope of protection of the present application. The test methods in the following examples, if not specified, are generally carried out under conventional conditions, or under the conditions recommended by the manufacturers.

[0081] When the examples give numerical ranges, it should be understood that, unless otherwise specified by the present application, both endpoints of each numerical range and any number between the two endpoints can be selected. Unless otherwise defined, all technical and scientific terms used in the present application have the same meaning as generally understood by those skilled in the art. In addition to the specific methods, devices, materials used in the examples, any method, device and material of the prior art similar or equivalent to those described in the examples of the present application can also be used to implement the present application according to the mastery of the prior art by those skilled in the art and the description of the present application.

[0082] The structure and process of the ring spinning composite core yarn spinning device used in the full cotton moisture absorption and quick-drying yarn in the embodiments of the present application are as follows: Figure 1As shown, along the production direction, the core layer yarn 1 passes through the unwinding, then passes through the upper and lower tension discs 2, the guide hook 3, the tension control component 4, the guide roller 14, and is drafted with the skin layer roving 5 passing through the upper guide rod 6, the lower guide rod 7, the double-hole trumpet 8, the back roller and the back skin roller 9, the double-hole trumpet 8, the middle roller and the upper and lower pin 10, and then converges at the nip of the front roller 11. The skin layer roving 5 is evenly wrapped on the surface of the core layer yarn 1, and then is twisted and wound to obtain the yarn D with a skin-core structure. The yarn D is subjected to the moisture absorption and quick-drying finishing to obtain the moisture absorption and quick-drying yarn E.

[0083] The schematic diagram of the cross section of the full cotton moisture absorption and quick-drying yarn in the embodiment of the present application is shown in Figure 2 As shown, the full cotton moisture absorption and quick-drying yarn 3 includes a core layer and a skin layer. The core layer full cotton water repellent yarn 1 is completely wrapped by the full cotton fiber 2 of the skin layer.

[0084] In the following embodiments, the processing part, such as the bath ratio, is carried out according to 1:15.

[0085] Embodiment 1

[0086] This embodiment is a preparation example of one of the yarns. In this embodiment:

[0087] 1. Preparation of the core layer water repellent yarn B

[0088] 1) Fiber pretreatment: select the combed cotton fiber with a MA value of 3.5, and sequentially process through the cleaning, carding, and drawing processes. The cotton sliver before drawing has a weight of 18.5 g / 5 m;

[0089] 2) Roving and yarn forming: the roving weight is 4.0 g / 10 m, and the roving twist factor is 110. The 60S1 yarn A with a twist direction of S twist is spun by using the siro-spinning process, and the twist factor is 370;

[0090] 3) Water repellent finishing: sequentially perform the pretreatment, hot washing, over-acid treatment, washing, and oiling treatment on the yarn A;

[0091] The pretreatment temperature is 80℃, and the time is 30 min. The pretreatment water solution contains 2wt% of a refining agent and 4wt% of sodium hydroxide;

[0092] The hot washing is washing with 70℃ water for 30 min. The over-acid treatment is performed by using 1g / L water solution containing glacial acetic acid to immerse for 40 min at 40℃;

[0093] The oiling treatment is to immerse the yarn in the oiling agent at 70℃ for 40 min. The oiling agent contains 8wt% of a fluorine-free water repellent agent, 3wt% of a softening agent, and 2wt% of a lofting agent, based on the mass of the cotton fiber;

[0094] The refining agent is TS-Q221, the fluorine-free water repellent agent is PHOBOL RSH of Huntsman, the softening agent is TF-433, and the lofting agent is A50;

[0095] The bath ratio in the above water repellent finishing process is 1:15.

[0096] The water repellent yarn B with 60S and a twist factor of 370 is obtained through the above water repellent finishing.

[0097] 2. Preparation of the core-sheath structure yarn D

[0098] 1) Processing of the roving C as the sheath: select combed cotton fibers with a MA value of 5.0, and process through the processes of scutching, carding, and drawing to form, with a set weight of 18.5 g / 5 m for the mature sliver and a set weight of 5.2 g / 10 m for the roving, and a twist factor of 110 for the roving;

[0099] 2) Core-spun yarn: use the yarn B as the core layer, guide the core layer through the tension disc, the guide hook, and the guide roller, and after the sheath roving C is drawn by the back roller, uniformly cover the core layer at the front roller nip, and twist to form the Z-twist yarn D with a yarn count of 30S1 and a twist factor of 280.

[0100] The core layer of the yarn uses cotton fibers in an amount of 50 wt%, and the sheath uses cotton fibers in an amount of 50 wt%.

[0101] 3. Moisture absorption and quick drying finishing

[0102] 1) Pretreatment: treat the yarn D in the moisture absorption and quick drying aqueous solution at 90°C for 50 min; the moisture absorption and quick drying aqueous solution contains 2 wt% of the refining agent, 2 wt% of sodium hydroxide, and 6 wt% of hydrogen peroxide, based on the mass of the cotton fibers as the sheath; the refining agent is K-23, and the bath ratio is 1:15;

[0103] 2) Functional modification:

[0104] Treat the yarn D in the aqueous solution of glacial acetic acid at 70°C for 10 min to remove oxygen; then, wash the yarn D in tap water at 35°C for 20 min;

[0105] Then, add 2 wt% of the softening agent, 1.5 wt% of the lofting agent, and 2 wt% of the moisture absorption and quick drying finishing agent to form an aqueous solution of the mixed system, based on the mass of the cotton fibers as the sheath, and immerse the washed yarn D in the mixed system at 40°C for 30 min; the softening agent is TF-4922, the moisture absorption and quick drying finishing agent is PM-226, and the lofting agent is RH-NB-123; the bath ratio is 1:15.

[0106] Finally, obtain the moisture absorption and quick drying yarn E with a hydrophilic outer layer.

[0107] The plain fabric structure made of the moisture absorption and rapid drying yarn E is tested for moisture absorption and rapid drying performance and contact instantaneous cooling performance according to GB / T 21655.1-2023 Textiles - Assessment of the moisture management performance - Part 1: Single unit combination test method and GB / T 35263-2017 Textiles - Determination and evaluation of the contact instantaneous cooling performance. The test results are shown in Tables 1 and 2. The fabric prepared from the moisture absorption and rapid drying yarn has good moisture absorption and rapid drying performance and cooling performance.

[0108] Table 1 Moisture absorption and rapid drying performance test results

[0109] Inspection and testing items Standard value and tolerance Test results determination Water absorption before washing (%) ≥80(Level I) 109 conform to Water absorption after washing|(%) ≥80(Level I) 114 conform to Water diffusion time before washing (s) ≤6(Level I) 4 conform to Water drop diffusion time after washing (s) ≤6(Level I) 2.7 conform to Drying rate before washing (g / h) ≥0.2(Level I) 0.33 conform to Drying rate after washing (g / h) ≥0.2(Level I) 0.32 conform to Wicking height before washing (mm) ≥80(Level I) 115 vertical, 97 horizontal conform to Wicking height after washing (mm) ≥80(Level I) 118 vertically, 101 horizontally conform to

[0110] Table 2 Contact instantaneous cooling performance test results

[0111]

[0112] In the above table, 5 samples are selected from the fabric, and the average value of the 5 samples is detected.

[0113] Example 2

[0114] This example is another preparation example of a full cotton moisture absorption and rapid drying yarn. Among them:

[0115] 1. Preparation of core layer water repellent yarn B:

[0116] 1) Fiber pretreatment: select combed cotton fiber with a MA value of 3.5, and process through the processes of scutching, carding, and drawing in sequence, with a cotton strip weight of 24 g / 5 m before drawing;

[0117] 2) Roving and yarn forming: the roving weight is 3.0 g / 10 m, and the roving twist factor is 110; 66S1 yarn A with Z twist is spun by using the siro-spinning process, and the twist factor is 371;

[0118] 3) Water repellent finishing: the yarn A is sequentially subjected to pretreatment, hot washing, acid treatment, washing, and oiling treatment;

[0119] The pretreatment temperature is 95℃, and the time is 20 min. The pretreatment water solution contains 4wt% refining agent and 1.5wt% sodium hydroxide; the bath ratio is 1:15;

[0120] The hot washing is washing with 80℃ water for 30 min;

[0121] The acid treatment is carried out by using 2g / L water solution containing glacial acetic acid for 30 min at 35℃;

[0122] The oiling treatment involves immersion in an oiling agent at 60°C for 20 minutes. Based on the mass of the cotton fibers used as the core layer, the oiling agent contains 8% by weight of a fluorine-free water repellent, 3% by weight of a softener, and 2.5% by weight of a bulking agent. The remainder is water. The oiling is completed by immersion. The bath ratio is 1:15.

[0123] The above-mentioned refining agent is YH-1116E, the fluorine-free water repellent is TF-501A of Chuanhua, the softener is SG-6, and the bulking agent is GE;

[0124] After the above water-repellent finishing, 66S water-repellent yarn B was obtained.

[0125] 2. Preparation of sheath-core structure yarn D:

[0126] 1) Processing of roving C: Combed cotton fiber with a horsepower value of 5.0 is selected and made through the processes of blowing, carding and drawing. The sliver weight is 18.5g / 5m and the roving weight is 4.0g / 10m; the roving twist coefficient is 110;

[0127] 2) Core-spun yarn: With yarn B as the core layer, it passes through the ring spinning filament core-spun yarn equipment. The core layer is guided by the tension disk, the guide hook and the guide wheel. The cortical roving C is drafted by the rear roller and evenly covered with the core layer at the jaws of the front roller. It is twisted to form S-twisted yarn D with a yarn count of 40S1 and a twist coefficient of 270.

[0128] The mass ratio of the raw cotton fiber used as the skin layer to the raw cotton fiber used as the core layer is 40:60.

[0129] 3. Moisture-absorbing and quick-drying finishing:

[0130] 1) Pretreatment: Yarn D was scoured and bleached in a moisture-absorbing quick-drying aqueous solution at 90° C. for 40 min; the moisture-absorbing quick-drying aqueous solution contained 2 wt% of a refining agent, 2 wt% of sodium hydroxide, and 4 wt% of hydrogen peroxide, based on the mass of the raw cotton fiber serving as the cortex; the refining agent was YH-1116E; and the bath ratio was 1:15;

[0131] 2) Functional modification:

[0132] Yarn D was deoxygenated by peracid treatment with glacial acetic acid aqueous solution at 40°C for 20 min and then immersed in tap water at 35°C for 20 min.

[0133] Based on the mass of the raw cotton fiber serving as the cortex, a mixture system is formed by adding 2 wt% of a softener, 2 wt% of a bulking agent, and 3 wt% of a moisture-absorbing and quick-drying finishing agent, with water being the remainder. The bath ratio is 1:15. The washed yarn D is immersed in the mixture system at 40°C for 30 minutes. The softener is TY-168, the moisture-absorbing and quick-drying finishing agent is ULTRATEX HSD, and the bulking agent is GE.

[0134] The bath ratio in the above functional modification process is 1:15, which is calculated based on the mass of the raw cotton fiber of the cortex.

[0135] Finally, the moisture-absorbing and quick-drying yarn E with a hydrophilic outer layer is obtained.

[0136] Plain weave fabrics were made using the aforementioned fast-absorbing yarn E and tested for moisture absorption and quick-drying properties and instantaneous cooling properties using the same testing methods as in Example 1. The test results are shown in Tables 3 and 4. The fabrics made using the fast-absorbing yarn E exhibited excellent moisture absorption and quick-drying properties and cooling properties.

[0137] Table 3 Moisture absorption and quick-drying performance test results

[0138] Inspection and testing items Standard value and tolerance Inspection and testing results determination Water absorption before washing (%) ≥80(Level I) 101 conform to Water absorption after washing|(%) ≥80(Level I) 111 conform to Water diffusion time before washing (s) ≤6(Level I) 3.5 conform to Water drop diffusion time after washing (s) ≤6(Level I) 2.0 conform to Drying rate before washing (g / h) ≥0.2(Level I) 0.35 conform to Drying rate after washing (g / h) ≥0.2(Level I) 0.37 conform to Wicking height before washing (mm) ≥80(Level I) Vertical 120, horizontal 102 conform to Wicking height after washing (mm) ≥80(Level I) 125 vertical, 110 horizontal conform to

[0139] Table 4 Test results of instantaneous cool feeling performance

[0140]

[0141] Five samples of the fabric prepared in the examples of the present application were selected, and the test results were averaged.

[0142] Example 3

[0143] In this embodiment, the socks are woven with the cotton moisture-absorbing and quick-drying yarn of Example 1 accounting for 82wt% and the nylon filament accounting for 18wt%. The nylon filament is located on the inside of the socks, and the cotton moisture-absorbing and quick-drying yarn is located on the outside of the socks. The cotton moisture-absorbing and quick-drying yarn has a yarn count of 40S and the nylon filament is 30D-DTY filament. The weaving is carried out in a composite manner using multiple tissue structures, specifically:

[0144] like Figure 3 As shown, the socks include a cuff, a barrel, a heel, a sole, a sock cover, a toe, and a connecting layer between the sock cover and the sock cover. The cuff and barrel utilize a 2x2 rib weave, with two stitches on the front and two stitches on the back, in a continuous loop. The heel, sock cover, and toe utilize a plain weave, with the front knitted continuously. The foot utilizes a mesh weave, knitted using a double-pique technique. The connecting layer utilizes a 2x1 rib weave, with two stitches on the front and one stitch on the back, in a continuous loop. The socks have a horizontal density of 30 threads per inch and a vertical density of 43 threads per inch.

[0145] The socks are subjected to moisture absorption and quick drying performance test and contact instant cool feeling performance test, and the test method refers to Example 1. The test results are shown in Table 5 and Table 6. The socks made of the full cotton moisture absorption and quick drying yarn of the application have overall design which not only ensures the comfort and aesthetic effect of wearing, soft outside and hard inside, good stiffness, but also has the full cotton skin-friendly, cool feeling, moisture absorption and moisture permeability and quick drying performance, and is suitable for sports socks, outdoor socks and other scenes.

[0146] Table 5 Moisture absorption and quick drying performance test results

[0147] Inspection and testing items Standard value and tolerance Inspection and testing results determination Water absorption before washing (%) ≥80(Level I) 90 conform to Water absorption after washing|(%) ≥80(Level I) 91 conform to Water diffusion time before washing (s) ≤6(Level I) 3 conform to Water drop diffusion time after washing (s) ≤6(Level I) 2 conform to Drying rate before washing (g / h) ≥0.2(Level I) 0.35 conform to Drying rate after washing (g / h) ≥0.2(Level I) 0.36 conform to Wicking height before washing (mm) ≥80(Level I) 101 vertically, 95 horizontally conform to Wicking height after washing (mm) ≥80(Level I) 105 vertically, 98 horizontally conform to

[0148] Table 6 Contact instant cool feeling performance test results

[0149]

[0150] The average value of 5 random tests in the above fabric is taken.

[0151] Comparative Example 1

[0152] The same as Example 1, only without moisture absorption and quick drying treatment.

[0153] Moisture absorption and quick drying performance test results

[0154]

[0155]

[0156] Contact instant cool feeling performance test results

[0157]

[0158] Comparative Example 2

[0159] The same as Example 1, the core layer and the skin layer are both 3.7 martens hardness.

[0160] Moisture absorption and quick drying performance test results

[0161] Inspection and testing items Standard value and tolerance Test results determination Water absorption before washing (%) ≥80(Level I) 115 conform to Water absorption after washing|(%) ≥80(Level I) 119 conform to Water diffusion time before washing (s) ≤6(Level I) 4 conform to Water drop diffusion time after washing (s) ≤6(Level I) 2.8 conform to Drying rate before washing (g / h) ≥0.2(Level I) 0.30 conform to Drying rate after washing (g / h) ≥0.2(Level I) 0.28 conform to Wicking height before washing (mm) ≥80(Level I) Vertical 100, horizontal 85 conform to Wicking height after washing (mm) ≥80(Level I) 101 vertically, 87 horizontally conform to

[0162] Contact instant cool feeling performance test results

[0163]

[0164] Comparative Example 3

[0165] The same as Example 1, the core layer and the skin layer have the same twist direction.

[0166] Moisture absorption and quick drying performance test results

[0167] Inspection and testing items Standard value and tolerance Test results determination Water absorption before washing (%) ≥80(Level I) 108 conform to Water absorption after washing|(%) ≥80(Level I) 113 conform to Water diffusion time before washing (s) ≤6(Level I) 5.3 conform to Water drop diffusion time after washing (s) ≤6(Level I) 4.6 conform to Drying rate before washing (g / h) ≥0.2(Level I) 0.28 conform to Drying rate after washing (g / h) ≥0.2(Level I) 0.25 conform to Wicking height before washing (mm) ≥80(Level I) Vertical 110, horizontal 90 conform to Wicking height after washing (mm) ≥80(Level I) 112 vertically, 93 horizontally conform to

[0168] Test results of instant cool feeling performance

[0169]

[0170] The above embodiments are merely illustrative of the principles and effects of the present invention and are not intended to limit the present invention. Anyone skilled in the art may 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 one of ordinary skill in the art without departing from the spirit and technical principles disclosed herein are intended to be covered by the claims of the present invention.

Claims

1. A pure cotton moisture-absorbing and quick-drying yarn, which is a sheath-core structure and has been subjected to moisture-absorbing and quick-drying finishing, wherein: In the core-sheath structure, the core layer is a double-helix structured cotton water-repellent spun yarn, and the skin layer is a cotton coarse yarn wrapped around the surface of the core layer.

2. The yarn according to claim 1, characterized in that The double helix structured all-cotton water-repellent spun yarn is obtained by the following method: cotton fibers are obtained through blow-drying, carding, drawing, roving and spun yarn; And / or, the pure cotton roving used as the skin layer for covering the surface of the core layer is obtained by the following method: cotton fibers are obtained through cleaning, carding, drawing, and roving.

3. The yarn according to claim 2, characterized in that The method of obtaining the all-cotton water-repellent spun yarn with a double helix structure further comprises one or more of the following conditions: A1) The spun yarn is fed by two rovings through ring spinning, and is drawn and twisted by a twisting forming mechanism; A2) the basis weight of the card sliver before drawing is 15 g / 5 m to 21 g / 5 m; A3) the basis weight of the drawn strands is 15.0 g / 5 m to 21.0 g / 5 m; A4) the roving has a twist coefficient of 85 to 125 and a basis weight of 3.0 g / 10 m to 10 g / 10 m; A5) The spun yarn count as the core layer is 30-120S and the twist coefficient is 300-450; A6) the raw cotton fiber of the core layer has a Ma value of less than 3.7; A7) The amount of the core layer cotton fiber is 30 wt% to 60 wt% based on the mass of the pure cotton moisture-absorbing and quick-drying yarn; And / or, the method for preparing the cotton roving coated on the surface of the core layer further comprises one or more of the following conditions: B1) The basis weight of the drawn strands is 15.0 g / 5 m2 to 21.0 g / 5 m2; B2) The twist coefficient of the roving is 85 to 125, and the basis weight is 3.0 g / 10 m to 10 g / 10 m; B3) the raw cotton fiber of the cortex has a horsepower value greater than or equal to 3.7; B4) Based on the mass of the pure cotton moisture-absorbing and quick-drying yarn, the amount of the cortical cotton fiber is 40wt% to 70wt%.

4. The yarn according to claim 1, characterized in that The cotton moisture-absorbing quick-drying yarn has a yarn count of 16 to 60S and a twist coefficient of 220 to 350; And / or, the twist direction of the pure cotton moisture-absorbing and quick-drying yarn is Z twist or S twist, which is opposite to the twist direction of the pure cotton water-repellent spun yarn of the core layer; And / or, the water-repellent cotton spun yarn is obtained by water-repellent finishing, including: pre-treatment, hot washing, peracidification, water washing and oiling; And / or, the moisture absorption and quick-drying finishing comprises scouring and bleaching in a moisture absorption and quick-drying aqueous solution at 60 to 90° C. for 10 to 60 minutes; Preferably, the moisture absorption and quick-drying finishing further comprises a peracid deoxidation treatment, water washing, and a moisture absorption and quick-drying treatment; And / or, the moisture absorption and quick-drying finishing is performed after the skin-core structure is formed.

5. The yarn according to claim 4, characterized in that The pretreatment is scouring in an aqueous solution at 50-100° C. for 10-30 minutes. Based on the mass of the core layer cotton fiber, the aqueous solution contains 1-5 wt% of a refining agent and 1-10 wt% of sodium hydroxide; the bath ratio is 1:5-20; And / or, the peracid is treated by immersing in a 0.3-2 g / L acetic acid aqueous solution at 35-50° C. for 20-60 min; And / or, the oiling treatment is a treatment with an oiling agent at 40 to 80° C. for 20 to 60 minutes; And / or, the acid in the peracid deoxygenation treatment process is glacial acetic acid, the treatment temperature is 40-80° C., the treatment time is 10-20 min, and the bath ratio is 1:5-20; And / or, based on the mass of the raw cotton fiber as the cortex, the moisture-absorbing quick-drying aqueous solution contains 0.5-2 wt% of a refining agent or a degreasing agent, 0.5-2 wt% of sodium hydroxide, and no more than 8 wt% of hydrogen peroxide; the bath ratio is 1:5-20; And / or, the moisture absorption and quick-drying treatment uses a mixed water system containing a softener, a bulking agent and a moisture absorption and quick-drying finishing agent at 40-60° C. for 20-60 minutes; the bath ratio is 1:5-20.

6. The yarn according to claim 5, characterized in that The refining agent or degreasing agent is a mixture of fatty acid methyl ester polyoxyethylene ether and sodium alkyl sulfonate; And / or, the oiling agent contains 2wt% to 12wt% of a fluorine-free water repellent or a fluorine-containing water repellent, 0.5wt% to 5wt% of a softener, and 0.5wt% to 5wt% of a bulking agent; the bath ratio is 1:5-20; And / or, in the mixed system, based on the mass of the cotton fiber, the mass ratio of the softener is 1wt% to 5wt%, the mass ratio of the bulking agent is 0.5wt% to 5wt%, and the mass ratio of the moisture-absorbing and quick-drying finishing agent is 1wt% to 5wt%; the bath ratio is 1:5-20.

7. The yarn according to any one of claims 5 to 6, characterized in that The softener is selected from one or more of amidohexyl-polyethoxymethyl sulfate, amino-modified dimethylsiloxane-polyether copolymer, dimethyl-3-[(2-aminoethyl)amino]propylmethylsiloxane, and dimethyl-3-[(2-aminoethyl)amino]propylmethylpolysiloxane; And / or, the bulking agent is a mixture of silicone and one or more selected from polysiloxane, fatty alcohol and fatty amine; and / or, the moisture-absorbing and quick-drying finishing agent is a mixed oil system with polyether polyester compounds and / or carboxylic acid ethoxy compounds as main components. Preferably, the moisture-absorbing and quick-drying finishing agent is selected from one or more of PM-226, DM-3402, MJ-8307, MT-110A, ULTRATEX HSD, TexnologyX23 and TF-620.

8. A method for producing a pure cotton moisture-absorbing quick-drying yarn, comprising: A composite core-spun structure is formed by using the pure cotton water-repellent spun yarn as claimed in any one of claims 1 to 7 and the pure cotton roving as the skin layer.

9. A fabric woven from the yarn according to any one of claims 1 to 7.

10. A sock made of the yarn according to any one of claims 1 to 7, characterized in that: The socks are woven from the cotton moisture-absorbing quick-drying yarn and nylon filament; And / or, the cotton moisture-absorbing and quick-drying yarn has a yarn count of 16S-60S; And / or, the nylon filament is 30D-100D DTY filament; And / or, the mass proportion of the pure cotton moisture-absorbing and quick-drying yarn in the socks is 66wt% to 91wt%, and the mass proportion of the nylon filament is 9wt% to 34wt%.

11. The socks according to claim 10, characterized in that The socks include a sock opening, a sock barrel, a heel, a sock sole, a sock surface, a sock toe, and a sock sole and sock surface connecting layer; the sock opening and sock barrel are designed with a rib weave, and are knitted with two needles on the front and two needles on the back in a continuous cycle; the sock heel, sock surface, and sock toe are designed with a plain weave, and are knitted continuously on the front; the sock surface is designed with a mesh weave, and the knitting process is according to the double bead knitting process; the sock surface and sock surface connecting layer is designed with a rib weave, and are knitted with two needles on the front and one needle on the back in a continuous cycle.

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