One-way moisture-conducting and sweat-discharging fabric and preparation method thereof

Abstract

The invention discloses a preparation method of a one-way moisture-conducting and sweat-discharging fabric. The preparation method comprises the following steps: A, weaving gray fabric by adopting a sandwich weaving method; b, the grey cloth is sequentially subjected to cloth loosening treatment and dry cloth fixing treatment, and intermediate grey cloth is obtained; c, sequentially performing scouring and bleaching treatment, water washing treatment, neutralizing treatment and dyeing treatment on the intermediate gray fabric to obtain dyed gray fabric; and D, sequentially carrying out washing and drying treatment, shaping and softening treatment and fixed blank heating treatment on the dyed gray fabric to obtain the one-way moisture-conducting and sweat-discharging fabric. According to the preparation method of the one-way moisture-conducting and sweat-discharging fabric, it is ensured that the prepared one-way moisture-conducting and sweat-discharging fabric not only can have the sweat-discharging property and the heat retention property at the same time, but also can effectively solve the technical problems of the sweat showing phenomenon and uncomfortable wearing.

Description

Technical Field

[0001] The invention relates to the technical field of textile fabrics, and in particular to a one-way moisture conduction and perspiration wicking fabric and a preparation method thereof. Background Art

[0002] With the increasingly accelerated pace of modern people's lives and the significantly enhanced awareness of fitness, sportswear has become an indispensable part of consumers' daily wear. During exercise, the human body will sweat a lot, and ordinary fabrics tend to become wet and close to the skin after absorbing sweat, which not only brings great discomfort to the wearer, but also may affect athletic performance. More importantly, the retention and slow evaporation of sweat will take away a lot of heat from the human body, thereby increasing the risk of catching a cold. Therefore, the market demand for fabrics with efficient moisture wicking function (i.e. moisture wicking fabrics) is increasing day by day.

[0003] The moisture-wicking fabrics currently on the market are mainly achieved in the following ways: (1) Through graft copolymerization technology, hydrophilic groups are introduced into the hydrophobic macromolecules of the spinning raw materials used in the bottom yarn layer to improve the hydrophilicity of the spinning raw materials, so that the spinning raw materials can better absorb and conduct sweat, in order to improve the moisture-wicking performance of the raw materials; (2) The spinning raw materials used in the bottom yarn layer are hydrophobically modified to reduce the absorption capacity of the spinning raw materials for sweat, thereby avoiding the retention of sweat inside the spinning raw materials, allowing it to be conducted outward to achieve the purpose of sweating. However, the above two methods still have problems such as low chemical stability, poor durability, complex processing technology and low efficiency. At the same time, the moisture-wicking fabrics prepared by the above two methods have insufficient isolation mechanism of the bottom yarn layer, and the conducted sweat is easy to reverse osmosis to the human body surface, resulting in the accumulation of sweat between the bottom yarn layer and the human body surface, which in turn causes the visible sweat phenomenon. In addition, the retained sweat also increases the contact area and friction adhesion between the bottom yarn layer of the fabric and the human body surface, making it difficult to avoid adhesion to the human body surface even if the bottom yarn layer has hydrophobic properties, greatly reducing the wearing comfort of the fabric. In addition, since sweat cannot be quickly transferred from the bottom yarn layer to the top yarn layer and evaporate instantly, the fabric is easily saturated and cannot absorb new sweat, which aggravates the sweating phenomenon and wearing discomfort.

[0004] In order to overcome the above-mentioned defects, the moisture-wicking fabrics in the prior art attempt to use a hydrophobic spinning material as the base yarn layer and a hydrophilic spinning material as the surface yarn layer, and utilize the natural difference in moisture absorption and moisture conductivity between the woven base yarn layer and the surface yarn layer to achieve unidirectional conduction and evaporation of sweat, thereby achieving the purpose of sweating. However, during the process of sweating, the heat of the human body is also dissipated into the air as the sweat evaporates, causing the wearer to easily lose body temperature and feel cold. That is, although the existing unidirectional moisture-wicking fabrics can achieve sweating, their thermal insulation performance is reduced, and it is impossible to take into account both the sweat-wicking performance and the thermal insulation performance at the same time, which limits their application in cold environments. In addition, the moisture-wicking fabrics obtained by the prior art still have technical problems such as the sweat-visible phenomenon and the reduced wearing comfort caused by the easy reverse osmosis of sweat and the inability of sweat to evaporate instantly. Summary of the invention

[0005] One of the purposes of the present invention is to propose a method for preparing a one-way moisture-wicking fabric, which has simple steps and strong operability, ensuring that the prepared one-way moisture-wicking fabric can not only take into account both sweat-wicking and warmth retention, but also effectively solve the technical problems of sweat visibility and uncomfortable wearing, thereby meeting actual use needs.

[0006] The second purpose of the present invention is to provide a unidirectional moisture conduction and perspiration wicking fabric, wherein the permeable surface soaking time before washing is ≥ level 4, the permeable surface soaking time after washing is ≥ level 4, the permeable surface water absorption rate before washing is ≥ level 4, the permeable surface water absorption rate after washing is ≥ level 4, the unidirectional transfer index before washing is ≥ level 5, the unidirectional transfer index after washing is ≥ level 5, and the thermal insulation property is greater than 25.5%. It can not only take into account both perspiration and warmth retention, but also effectively solve the technical problems of sweat visibility and uncomfortable wearing, and meet the actual use needs.

[0007] To achieve this object, the present invention adopts the following technical solutions:

[0008] A method for preparing a one-way moisture-wicking fabric comprises the following steps:

[0009] A. The grey cloth is woven by sandwich weaving; wherein the raw material of the horizontal surface yarn is a compact spinning yarn made of cotton and modal, the raw material of the horizontal middle yarn is ordinary polyester I, and the raw material of the horizontal bottom yarn is a blended yarn I composed of waterproof polyester and spandex, and a blended yarn II composed of ordinary polyester II and spandex, and in the weaving process, the blended yarn I and the blended yarn II are alternated in units of two times;

[0010] Wherein, the denier of the waterproof polyester is the same as the denier of the ordinary polyester II, and the denier of the ordinary polyester I is smaller than the denier of the ordinary polyester II;

[0011] B. performing a loosening process and a dry-cloth fixing process on the grey cloth in sequence to obtain an intermediate grey cloth;

[0012] C. performing boiling and bleaching treatment, washing treatment, neutralization treatment and dyeing treatment on the intermediate grey cloth in sequence to obtain a dyed grey cloth;

[0013] D. The dyed grey fabric is sequentially subjected to washing and drying treatment, shaping and softening treatment, and grey heating treatment to obtain a unidirectional moisture conduction and perspiration wicking fabric.

[0014] Further, in step A, the specific steps of weaving the grey cloth by sandwich weaving are as follows: the woven pattern is composed of a pattern cycle with twelve horizontal paths and four groups of weaving systems, the pattern cycle includes horizontal path yarn, horizontal path bottom yarn and horizontal path middle yarn, one horizontal path bottom yarn, one horizontal path middle yarn and one horizontal path yarn constitute a group of weaving systems, one horizontal path bottom yarn, one horizontal path middle yarn and one horizontal path yarn correspond to one work position respectively, each group of weaving systems performs three work position needle selection, and each work position has two weaving needle positions;

[0015] The spinning raw materials of the horizontal bottom yarns of the first two groups of weaving systems in the four weaving systems are blended yarn I; the spinning raw materials of the horizontal bottom yarns of the remaining two groups of weaving systems in the four weaving systems are blended yarn II.

[0016] Further, the four knitting systems are respectively a first knitting system, a second knitting system, a third knitting system and a fourth knitting system, and the two knitting needle positions are respectively a first knitting needle position and a second knitting needle position;

[0017] The upper needle discs of the first knitting needle position and the upper needle discs of the second knitting needle position of the horizontal bottom yarn of all knitting systems participate in knitting; the upper needle discs of the first knitting needle position and the lower needle discs of the second knitting needle position of the horizontal intermediate yarn of the first knitting system and the third knitting system participate in tucking, the lower needle discs of the first knitting needle position and the upper needle discs of the second knitting needle position of the horizontal intermediate yarn of the second knitting system and the fourth knitting system participate in tucking, and the lower needle discs of the first knitting needle position and the lower needle discs of the second knitting needle position of the horizontal surface yarn of all knitting systems participate in knitting;

[0018] The spinning material of the horizontal base yarn of the first and second weaving systems is the blended yarn I, and the spinning material of the horizontal base yarn of the third and fourth weaving systems is the blended yarn II.

[0019] Furthermore, in step B, the specific method of the cloth loosening treatment is: placing the grey cloth in a relaxed state for more than 12 hours;

[0020] The specific method of the dry cloth setting treatment is: heating the grey cloth obtained after the loose cloth treatment at a temperature not higher than 190°C to dry set the grey cloth.

[0021] Further, in step C, the specific method of the scouring and bleaching treatment is: scouring and bleaching the intermediate grey cloth with a scouring and bleaching liquid, the scouring and bleaching temperature is 95-100° C., and the scouring and bleaching time is 45-55 min; the scouring and bleaching liquid includes 1.5-2.5 g / L of a refining agent, 0.3-0.8 g / L of a stabilizer, 5-7 g / L of liquid alkali and 4-8 g / L of hydrogen peroxide;

[0022] The specific method of the washing water treatment is: washing the grey cloth obtained after the scouring and bleaching treatment with water at 70 to 90° C. for 8 to 15 minutes;

[0023] The specific method of the neutralization treatment is: placing the grey cloth after the washing treatment in an acetic acid aqueous solution and soaking it for 5 to 15 minutes, and the concentration of the acetic acid aqueous solution is 0.8 to 1.2 g / L, and the temperature is 45 to 55° C.;

[0024] The specific method of the dyeing treatment is: dyeing the neutralized grey cloth with a dye aqueous solution for 20 to 30 minutes, and the temperature of the dye aqueous solution is 60 to 80°C; then adding sodium sulfate to the dye aqueous solution and stirring for 15 to 25 minutes; continuing to add sodium carbonate to the dye aqueous solution and stirring for 25 to 35 minutes; finally keeping the temperature at 60 to 80°C for 50 to 70 minutes.

[0025] Furthermore, in step D, the specific method of the water washing and drying treatment is: washing with warm water at 70 to 90°C, and then washing with cold water at 5 to 10°C, and after washing, placing in a drying room for drying treatment; wherein the drying temperature of the drying treatment is 100 to 110°C;

[0026] The specific method of the setting and softening treatment is: using 20-30 g / L of a hydrophilic softening agent to soften and set the dyed grey cloth after washing and drying, wherein the setting temperature is 130-150° C. and the setting time is 5-10 min;

[0027] The specific method of the heat treatment for setting is: heating and setting the dyed grey cloth after the setting and softening treatment at a temperature not higher than 150°C.

[0028] Further, in step A, the count of the compact spinning yarn is 45 to 55S;

[0029] The denier of the ordinary polyester I is 45 to 55D;

[0030] The denier of the spandex is 25 to 35D;

[0031] The deniers of the waterproof polyester and the ordinary polyester II are both 70-80D.

[0032] Furthermore, in step A, calculated by mass ratio, the mixing ratio of the modal and the cotton is 1:(4-5).

[0033] Furthermore, in step A, calculated by mass ratio, the yarn ratio of the transverse surface yarn, the transverse intermediate yarn and the transverse bottom yarn is 1:(0.05-0.20):(1-1.2).

[0034] A unidirectional moisture-wicking fabric is prepared using the above-mentioned method for preparing a unidirectional moisture-wicking fabric. The unidirectional moisture-wicking fabric has a permeable surface wetting time of ≥4 levels before washing, a permeable surface wetting time of ≥4 levels after washing, a permeable surface water absorption rate of ≥4 levels before washing, a permeable surface water absorption rate of ≥4 levels after washing, a unidirectional transfer index of ≥5 levels before washing, a unidirectional transfer index of ≥5 levels after washing, and a thermal insulation property of >25.5%.

[0035] The technical solution provided by the present invention may include the following beneficial effects:

[0036] 1. This technical solution achieves the effect of rapid conduction of sweat from the bottom yarn layer to the surface yarn layer by designing the difference in hygroscopicity and moisture conductivity between the bottom yarn layer and the surface yarn layer. When the sweat reaches the surface yarn layer, the surface yarn layer can quickly absorb the sweat due to its excellent hydrophilicity. Subsequently, the sweat will quickly evaporate into the air by utilizing the air flow and temperature difference on the surface of the surface yarn layer, thus achieving the purpose of sweat discharge.

[0037] 2. Since the blended yarn I has strong moisture conductivity, the blended yarn I forms a "moisture-conducting groove" of the bottom yarn layer after weaving; since the waterproof polyester has strong hydrophobicity, the blended yarn II forms a "hydrophobic membrane" of the bottom yarn layer after weaving. The above alternating weaving method makes the moisture-conducting grooves and the hydrophobic membrane in the bottom yarn layer alternately arranged. The moisture-conducting grooves have the characteristics of absorbing the sweat secreted by the human body and conducting it outwards, so that the bottom yarn layer has good moisture conductivity. The hydrophobic membrane has the characteristic of avoiding reverse penetration of the conducted sweat, so that the bottom yarn layer can achieve unidirectional conduction of sweat (i.e. unidirectional moisture conduction), thereby avoiding the conducted sweat from easily reversely penetrating to the human body surface, causing sweat to accumulate between the bottom yarn layer and the human body surface, and then causing sweating and wearing discomfort.

[0038] 3. This technical solution forms a "sweat storage pool" by adding an air layer and optimizing the spinning raw materials of the horizontal middle yarn. It not only greatly increases the sweat storage capacity of the fabric, but also effectively accelerates the evaporation rate of sweat, solving the technical problems of sweat visibility and wearing discomfort caused by the fabric being unable to continue to absorb new sweat due to saturation, thereby meeting actual usage needs.

[0039] 4. When sweat is conducted from the bottom yarn layer to the air layer, the air layer provides a buffer area, so that the heat released when the sweat evaporates can stay inside the fabric for a longer time, thereby slowing down the drop in the wearer's body temperature. At the same time, the air layer contains a large number of tiny air pockets or air channels, which can capture and retain air. Air is a poor conductor of heat, which is conducive to effectively isolating the cold air from the outside, reducing the outflow of heat, and greatly improving the warmth retention of the fabric. In addition, due to the unidirectional moisture-wicking fabric's unidirectional moisture-wicking fabric, it effectively blocks the cold and wet water vapor from the outside, making it difficult to penetrate the veil layer of the fabric, and then unable to cross the air layer to reach the bottom yarn layer, and come into direct contact with the human body surface, which not only ensures the smooth discharge of sweat, but also significantly improves the warmth retention performance of the fabric. That is, in this technical solution, by setting the air layer and the unidirectional moisture-wicking fabric, while ensuring the sweat-wicking performance of the fabric, it also has a high warmth retention, so that it can be used in cold environments. BRIEF DESCRIPTION OF THE DRAWINGS

[0040] Figure 1 The invention discloses a weaving pattern used when a method for preparing a one-way moisture-conducting and perspiration-wicking fabric adopts a sandwich weaving method to weave a grey cloth.

[0041] Figure 2 The invention discloses a method for preparing a one-way moisture-conducting and perspiration-wicking fabric, which is used when weaving a grey cloth by a sandwich weaving method. DETAILED DESCRIPTION

[0042] The present invention provides a method for preparing a one-way moisture-wicking fabric, comprising the following steps:

[0043] A. The grey cloth is woven by sandwich weaving; wherein the raw material of the horizontal surface yarn is a compact spinning yarn made of cotton and modal, the raw material of the horizontal middle yarn is ordinary polyester I, and the raw material of the horizontal bottom yarn is a blended yarn I composed of waterproof polyester and spandex, and a blended yarn II composed of ordinary polyester II and spandex, and in the weaving process, the blended yarn I and the blended yarn II are alternated in units of two times;

[0044] Wherein, the denier of the waterproof polyester is the same as the denier of the ordinary polyester II, and the denier of the ordinary polyester I is smaller than the denier of the ordinary polyester II;

[0045] B. performing a loosening process and a dry-cloth fixing process on the grey cloth in sequence to obtain an intermediate grey cloth;

[0046] C. performing boiling and bleaching treatment, washing treatment, neutralization treatment and dyeing treatment on the intermediate grey cloth in sequence to obtain a dyed grey cloth;

[0047] D. The dyed grey fabric is sequentially subjected to washing and drying treatment, shaping and softening treatment, and grey heating treatment to obtain a unidirectional moisture conduction and perspiration wicking fabric.

[0048] In order to overcome the technical problems that the prior art is difficult to take into account both perspiration and warmth retention, and is prone to cause visible sweat and reduced wearing comfort, the present technical solution proposes a method for preparing a one-way moisture-wicking fabric, including four steps: A (weaving grey cloth), B (loosening cloth and setting it in a dry manner), C (boiling and bleaching, washing, neutralizing and dyeing), and D (washing and drying, setting the oversoftening and heating the setting). The type of spinning raw materials, weaving method, and dry cloth setting treatment process are optimized to ensure that the one-way moisture-wicking fabric can not only take into account both perspiration and warmth retention, but also effectively solve the technical problems of visible sweat and uncomfortable wearing. At the same time, the preparation method of the present technical solution is simple and easy to operate, which is conducive to promotion and use in the clothing industry.

[0049] Specifically, the spinning materials of the horizontal surface yarn and the horizontal bottom yarn are woven by sandwich weaving to obtain the veil layer and the bottom yarn layer respectively, and the bottom yarn layer is in direct contact with the surface of the human body, and the veil layer is located outside the bottom yarn layer. Among them, the spinning material of the horizontal surface yarn is a compact spinning yarn woven from cotton and modal (specifically: the compact spinning yarn is a yarn obtained by compact spinning method using cotton and modal). Since both cotton and modal have porous structures and good hygroscopicity, the compact spinning yarn is hydrophilic as a whole. Since ordinary polyester II (polyester fiber) and spandex are both hydrophobic fibers and lack hydrophilic groups, the blended yarn II composed of ordinary polyester II and spandex is hydrophobic as a whole, and the hygroscopicity of the blended yarn II is far less than that of the compact spinning yarn. Therefore, in the fabric made by the sandwich weave, the bottom yarn layer has significantly lower hygroscopicity than the surface yarn layer. This hygroscopicity gradient causes sweat to be spontaneously conducted unidirectionally from the bottom yarn layer to the surface yarn layer.

[0050] Furthermore, although ordinary polyester II is a hydrophobic fiber, it still has the ability to absorb sweat, and the sweat absorbed by ordinary polyester II is mainly retained in the gaps between its fibers, which is less constrained, so it can quickly conduct sweat and show high moisture conductivity. Although spandex itself has low moisture absorption performance, the gaps between its fibers are conducive to the conduction and evaporation of sweat, thus also showing a good moisture conduction effect.

[0051] In contrast, the hygroscopic swelling properties of cotton fibers make them thick and heavy when wet, and difficult to dry, which affects their moisture conductivity. In addition, Modal can quickly absorb sweat and conduct sweat through the microporous structure between fibers, but its moisture conductivity is weaker than that of ordinary polyester II. Therefore, in this technical solution, the blended yarn II composed of ordinary polyester II and spandex is used as one of the spinning materials for the horizontal bottom yarn, so that the moisture conductivity of the bottom yarn layer is better than that of the veil layer.

[0052] Therefore, based on the above principle, it can be seen that the technical solution achieves the effect of rapid conduction of sweat from the bottom yarn layer to the surface yarn layer by designing the difference in hygroscopicity and moisture conductivity between the bottom yarn layer and the surface yarn layer. And when the sweat reaches the surface yarn layer, the surface yarn layer can quickly absorb the sweat due to its excellent hydrophilicity. Subsequently, by utilizing the air flow and temperature difference on the surface of the surface yarn layer, the sweat will quickly evaporate into the air, achieving the purpose of sweating.

[0053] Secondly, ordinary polyester II lacks an effective isolation mechanism, and the conducted sweat easily permeates back to the human body surface, causing sweat to accumulate between the bottom yarn layer and the human body surface, which in turn causes sweating and discomfort. Waterproof polyester, due to its hydrophobic film on the surface, can completely prevent moisture (including sweat and cold and wet water vapor) from penetrating into it. However, when only the blended yarn I composed of waterproof polyester and spandex is used, the bottom yarn layer will form a complete hydrophobic barrier, making it impossible for human sweat to penetrate the bottom yarn layer and conduct outward.

[0054] In order to solve the above problems, the spinning raw materials of the horizontal bottom yarn in the technical scheme are blended yarn Ⅰ composed of waterproof polyester and spandex and blended yarn Ⅱ composed of ordinary polyester Ⅱ and spandex, and during the weaving process, blended yarn Ⅰ and blended yarn Ⅱ are alternated in units of two times. Among them, since the blended yarn I has strong moisture conductivity, the blended yarn I forms a "moisture-conducting groove" of the bottom yarn layer after weaving; since the waterproof polyester has strong hydrophobicity, the blended yarn II forms a "hydrophobic membrane" of the bottom yarn layer after weaving. The above alternating weaving method makes the moisture-conducting grooves and the hydrophobic membrane in the bottom yarn layer alternately arranged, and the moisture-conducting grooves have the characteristics of absorbing the sweat secreted by the human body and conducting it outward, so that the bottom yarn layer has good moisture conductivity, and the hydrophobic membrane has the characteristics of avoiding reverse penetration of the conducted sweat, so that the bottom yarn layer can achieve unidirectional conduction of sweat (i.e. unidirectional moisture conduction), thereby avoiding the conducted sweat from easily reversely penetrating to the human body surface, causing sweat to accumulate between the bottom yarn layer and the human body surface, and then causing sweating phenomenon and wearing discomfort. It should be noted that, during the weaving process, the blended yarn Ⅰ and the blended yarn Ⅱ are alternated in units of two times, which means that the weaving method of the bottom yarn is cyclically carried out in the order of "blended yarn Ⅰ, blended yarn Ⅰ, blended yarn Ⅱ, blended yarn Ⅱ, blended yarn Ⅰ, blended yarn Ⅰ, blended yarn Ⅱ, blended yarn Ⅱ..."

[0055] Furthermore, in the technical solution, since the blended yarn I and the blended yarn II are hydrophobic as a whole, the obtained bottom yarn layer has a certain degree of hydrophobicity, but its hydrophobic performance is still limited, and it cannot completely conduct moisture in a unidirectional manner, and there is still a risk of reverse leakage. Therefore, the technical solution optimizes the processing technology of the grey cloth, specifically: the grey cloth after the loose cloth treatment is subjected to a dry cloth setting treatment. Since the dry cloth setting treatment is to heat the grey cloth in a waterless environment, it can increase the repulsive force of the ends of the macromolecular chains in the waterproof polyester and the ordinary polyester II, thereby increasing the hydrophobicity of the waterproof polyester and the ordinary polyester II, and then improving the unidirectional moisture conduction ability of the fabric, which is conducive to further avoiding the sweating phenomenon and wearing discomfort.

[0056] Furthermore, although the technical solution utilizes the strong moisture conductivity of the bottom yarn layer and the strong moisture absorption of the surface yarn layer to facilitate the sweat transferred to the surface yarn layer to be quickly absorbed by the surface yarn layer and diffused into the air, achieving the evaporation of sweat and achieving the purpose of perspiration, however, since sweat cannot be quickly transferred from the bottom yarn layer to the surface yarn layer and evaporated instantly, the fabric is easily saturated and cannot absorb new sweat, so even if the spinning raw materials and the grey fabric processing process are optimized, it is difficult to meet the use requirements of no sweat and reaching the standard of comfort.

[0057] In order to overcome the above defects, the horizontal middle yarn in the technical solution is sandwich woven to obtain an air layer with a mesh structure. The air layer is located between the bottom yarn layer and the face yarn layer. The air layer can not only support and connect the face yarn layer and the bottom yarn layer, effectively support the entire fabric, make the fabric have sufficient thickness, ensure its width and stiffness, and make it not easy to collapse, but also help to increase the thickness of the fabric, and form a "sweat storage pool" inside the fabric to hold sweat, so that even if the sweat cannot be quickly transferred from the bottom yarn layer to the face yarn layer and evaporated instantly, it can be temporarily stored in the "sweat storage pool". At the same time, compared with the traditional one-way moisture-conducting and sweat-wicking fabric composed only of the bottom yarn layer and the face yarn layer, the sweat storage capacity of the one-way moisture-conducting and sweat-wicking fabric obtained by the technical solution is greatly improved, which greatly reduces the risk of the fabric quickly reaching a saturated state due to sweat absorption. In addition, the "sweat storage pool" also greatly expands the evaporation area of ​​sweat, so that sweat has more opportunities to touch the veil layer, thereby improving the efficiency of evaporation; in addition, the spinning material of the horizontal middle yarn is ordinary polyester I, and water molecules only exist in its gaps, with small binding force, so that the air layer woven by ordinary polyester I can quickly conduct the sweat conducted from the bottom yarn layer to the veil layer, further accelerating the efficiency of sweat evaporation; further, the hydrophobicity of the air layer obtained by using ordinary polyester I in this technical solution is between the bottom yarn layer and the veil layer, so that the bottom yarn layer, the air layer and the veil layer form a moisture absorption and infiltration gradient, which is also conducive to the conduction and evaporation of sweat. That is, this technical solution forms a "sweat storage pool" by adding an air layer and optimizing the spinning material of the horizontal middle yarn, which not only greatly increases the sweat storage capacity of the fabric, but also effectively accelerates the evaporation rate of sweat, solves the technical problems of sweating caused by the fabric being unable to continue to absorb new sweat due to saturation and wearing discomfort, thereby meeting actual use needs.

[0058] Thirdly, although the one-way moisture-wicking fabric obtained by the present technical solution can achieve perspiration, its thermal insulation performance is reduced. It is impossible to take into account both perspiration-wicking performance and thermal insulation at the same time, which limits its application in cold environments.

[0059] In order to overcome the above defects, the present technical solution sets an air layer. When the sweat is conducted from the bottom yarn layer to the air layer, the air layer provides a buffer area, so that the heat released when the sweat evaporates can stay inside the fabric for a longer time, thereby slowing down the drop in the wearer's body temperature. At the same time, the air layer contains a large number of tiny air sacs or air channels, which can capture and retain air. Air is a poor conductor of heat, which is conducive to effectively isolating the cold air from the outside, reducing the outflow of heat, and greatly improving the warmth retention of the fabric. In addition, due to the unidirectional moisture conduction and perspiration wicking fabric, the cold and wet water vapor from the outside is effectively blocked, making it difficult to penetrate the veil layer of the fabric, and then unable to cross the air layer to reach the bottom yarn layer, and come into direct contact with the human body surface, which not only ensures the smooth discharge of sweat, but also significantly improves the warmth retention performance of the fabric. That is, in the present technical solution, by setting the air layer and the unidirectional moisture conduction of the fabric, the fabric has a high warmth retention performance while ensuring the perspiration performance of the fabric, so that it can be used in cold environments.

[0060] Finally, denier refers to the weight of 9,000 meters of silk at a standard moisture regain of 8.5%, and the larger the denier, the thicker the yarn. In order to make the surface yarn layer woven from blended yarn I and the bottom yarn layer woven from blended yarn I and blended yarn II in units of two times completely cover the middle layer woven from ordinary polyester I, the denier of waterproof polyester is the same as that of ordinary polyester II, and the denier of ordinary polyester I is smaller than that of ordinary polyester II, so as to avoid yarn leakage and ensure the appearance and performance of the product.

[0061] In addition, since the spinning raw materials of the horizontal bottom yarn are blended yarn Ⅰ composed of waterproof polyester and spandex and blended yarn Ⅱ composed of ordinary polyester Ⅱ and spandex, that is, the denier of waterproof polyester and ordinary polyester Ⅱ have similar structures, when the denier of the two is the same, it is not only beneficial to ensure the consistency of the fineness of the product, but also beneficial to ensure the production efficiency of the product.

[0062] It should be noted that the spinning raw materials in this technical solution include cotton, modal, polyester and spandex. Since cotton and modal are relatively soft, they are conducive to giving the fabric softness and improving its feel and comfort. As an elastic fiber, the addition of spandex makes the fabric highly elastic, which meets the use requirements of unidirectional moisture-wicking fabric as sports fabric.

[0063] Further explanation, in step A, the specific steps of weaving the grey cloth by sandwich weaving are as follows: the woven pattern is composed of a pattern cycle with twelve horizontal paths and four groups of weaving systems, the pattern cycle includes horizontal path yarn, horizontal path bottom yarn and horizontal path middle yarn, one horizontal path bottom yarn, one horizontal path middle yarn and one horizontal path yarn constitute a group of weaving systems, one horizontal path bottom yarn, one horizontal path middle yarn and one horizontal path yarn correspond to one work position respectively, each group of weaving systems performs three work position needle selection, and each work position has two weaving needle positions;

[0064] The spinning raw materials of the horizontal bottom yarns of the first two groups of weaving systems in the four weaving systems are blended yarn I; the spinning raw materials of the horizontal bottom yarns of the remaining two groups of weaving systems in the four weaving systems are blended yarn II.

[0065] In a preferred embodiment of the present technical solution, the present technical solution uses a 24G, 34-inch fine-gauge double-sided loom to weave the fabric, specifically as follows Figure 1 Weaving diagram and Figure 2 As shown in the diamond-shaped diagram, the weaving principle is that the pattern cycle adopts horizontal bottom yarn, horizontal middle yarn and horizontal surface yarn to weave into grey cloth, so that the fabric forms a bottom yarn layer, an air layer and a veil layer which are distributed from the inside to the outside. Through the mutual cooperation of the three tissue phases of the bottom yarn layer, the air layer and the veil layer, the prepared unidirectional moisture-wicking fabric can not only take into account the sweat-wicking and warmth-retaining properties at the same time, but also effectively solve the technical problems of sweat-visibility and uncomfortable wearing.

[0066] Further, the four knitting systems are respectively a first knitting system, a second knitting system, a third knitting system and a fourth knitting system, and the two knitting needle positions are respectively a first knitting needle position and a second knitting needle position;

[0067] The upper needle discs of the first knitting needle position and the upper needle discs of the second knitting needle position of the horizontal bottom yarn of all knitting systems participate in knitting; the upper needle discs of the first knitting needle position and the lower needle discs of the second knitting needle position of the horizontal intermediate yarn of the first knitting system and the third knitting system participate in tucking, the lower needle discs of the first knitting needle position and the upper needle discs of the second knitting needle position of the horizontal intermediate yarn of the second knitting system and the fourth knitting system participate in tucking, and the lower needle discs of the first knitting needle position and the lower needle discs of the second knitting needle position of the horizontal surface yarn of all knitting systems participate in knitting;

[0068] The spinning material of the horizontal base yarn of the first and second weaving systems is the blended yarn I, and the spinning material of the horizontal base yarn of the third and fourth weaving systems is the blended yarn II.

[0069] The technical scheme limits the specific weaving process, wherein a horizontal bottom yarn, a horizontal intermediate yarn and a horizontal surface yarn respectively correspond to a work position, and the first weaving needle position and the second weaving needle position of the weaving work position of the horizontal bottom yarn are used to weave the horizontal bottom yarn to obtain the bottom yarn layer; the first weaving needle position and the second weaving needle position of the weaving work position of the horizontal intermediate yarn are used to weave the horizontal intermediate yarn to obtain the air layer; the first weaving needle position and the second weaving needle position of the weaving work position of the horizontal surface yarn are used to weave the horizontal surface yarn to obtain the veil layer, thereby obtaining a fabric with a sandwich structure, thereby ensuring the performance of the fabric.

[0070] Further, in step B, the specific method of the cloth loosening treatment is: placing the grey cloth in a relaxed state for more than 12 hours;

[0071] The specific method of the dry cloth setting treatment is: heating the grey cloth obtained after the loose cloth treatment at a temperature not higher than 190°C to dry set the grey cloth.

[0072] Since spandex is used as a raw material in the one-way moisture-wicking fabric of the present technical solution, and spandex is an elastic fiber, the woven grey cloth needs to be loosened so that the grey cloth can relax back to a relatively natural state and have a stable size.

[0073] In addition, when the heating temperature exceeds 195°C, spandex will be irreversibly damaged. Therefore, the technical solution limits the temperature of the dry cloth blanking treatment to no more than 190°C, while ensuring the hydrophobicity of the bottom yarn layer after the dry cloth blanking treatment, and also avoids damage to other raw materials, thereby ensuring the performance of the product.

[0074] Further, in step C, the specific method of the scouring and bleaching treatment is: scouring the intermediate grey cloth with a scouring and bleaching liquid, the scouring and bleaching temperature is 95-100°C, and the scouring and bleaching time is 45-55min; the scouring and bleaching liquid includes 1.5-2.5g / L of a refining agent, 0.3-0.8g / L of a stabilizer, 5-7g / L of liquid alkali and 4-8g / L of hydrogen peroxide;

[0075] The specific method of the washing water treatment is: washing the grey cloth obtained after the scouring and bleaching treatment with water at 70 to 90° C. for 8 to 15 minutes;

[0076] The specific method of the neutralization treatment is: placing the grey cloth after the washing treatment in an acetic acid aqueous solution and soaking it for 5 to 15 minutes, and the concentration of the acetic acid aqueous solution is 0.8 to 1.2 g / L, and the temperature is 45 to 55° C.;

[0077] The specific method of the dyeing treatment is: dyeing the neutralized grey cloth with a dye aqueous solution for 20 to 30 minutes, and the temperature of the dye aqueous solution is 60 to 80°C; then adding sodium sulfate to the dye aqueous solution and stirring for 15 to 25 minutes; continuing to add sodium carbonate to the dye aqueous solution and stirring for 25 to 35 minutes; finally keeping the temperature at 60 to 80°C for 50 to 70 minutes.

[0078] In a preferred embodiment of the present technical solution, the specific method of scouring and bleaching treatment is: scouring and bleaching the intermediate grey cloth with a scouring and bleaching liquid, the scouring and bleaching temperature is 95-100°C, and the scouring and bleaching time is 45-55min; the scouring and bleaching liquid includes 1.5-2.5g / L of a refining agent, 0.3-0.8g / L of a stabilizer, 5-7g / L of liquid alkali and 4-8g / L of hydrogen peroxide. By limiting the scouring and bleaching temperature, scouring and bleaching time and scouring and bleaching liquid, impurities in the grey cloth are removed, so that the grey cloth is white, soft and breathable, and a qualified semi-finished product is provided for the subsequent dyeing process.

[0079] Furthermore, the specific method of washing water treatment is: washing the grey cloth obtained after the boiling and bleaching treatment with 70-90°C water for 8-15 minutes, and limiting the washing water temperature and washing time to ensure the washing effect, and facilitate the removal of the boiling and bleaching liquid to avoid the residual boiling and bleaching liquid affecting the subsequent processes.

[0080] Furthermore, the specific method of neutralization treatment is: placing the grey cloth after washing water treatment in an acetic acid aqueous solution and soaking it for 5 to 15 minutes, and the concentration of the acetic acid aqueous solution is 0.8 to 1.2 g / L, and the temperature is 45 to 55°C, and acetic acid is used to neutralize the liquid alkali components still remaining on the grey cloth after washing water treatment, so that the grey cloth is neutral, and at the same time, the high-valent iron ions remaining in the bleaching and washing treatment are complexed to prevent the grey cloth from yellowing.

[0081] Furthermore, the specific method of dyeing treatment is: dyeing the neutralized grey cloth with a dye aqueous solution for 20 to 30 minutes, the temperature of the dye aqueous solution is 60 to 80°C; then adding sodium sulfate to the dye aqueous solution and stirring for 15 to 25 minutes; continuing to add sodium carbonate to the dye aqueous solution and stirring for 25 to 35 minutes; finally keeping warm at a temperature of 60 to 80°C for 50 to 70 minutes, so that the grey cloth is 100% dyed, the dyeing is bright, and the floating color is less, thereby improving the dyeing effect of the grey cloth.

[0082] Further, in step D, the specific method of the water washing and drying treatment is: washing with warm water at 70-90°C, and then washing with cold water at 5-10°C. After washing, placing in a drying room for drying treatment; wherein the drying temperature of the drying treatment is 100-110°C;

[0083] The specific method of the setting and softening treatment is: using 20-30 g / L of a hydrophilic softening agent to soften and set the dyed grey cloth after washing and drying, wherein the setting temperature is 130-150° C. and the setting time is 5-10 min;

[0084] The specific method of the heat treatment for setting is: heating and setting the dyed grey cloth after the setting and softening treatment at a temperature not higher than 150°C.

[0085] In a preferred embodiment of the present technical solution, the specific method of washing and drying is: washing with warm water at 70-90°C, and then washing with cold water at 5-10°C, to ensure that the floating hair can be washed away as much as possible. After washing, the clothes are placed in a drying room for drying, and the drying temperature is 100-110°C to ensure the drying effect.

[0086] Furthermore, the specific method of the soft shaping treatment is: use 20-30g / L of hydrophilic soft oil to soften the dyed grey cloth after washing and drying, wherein the shaping temperature is 130-150°C and the shaping time is 5-10min, to ensure the soft shaping effect, so that the prepared fabric has high softness, improves its wearing comfort, and is also conducive to the subsequent raising treatment. In addition, the soft shaping treatment can also make ordinary polyester II slightly hydrophilic and hygroscopic, while the waterproof polyester will not be affected and continue to maintain the hydrophobic and water-repellent effect, and finally the bottom yarn layer, air layer and veil layer can not only form sweat conduction, but also avoid reverse leakage of sweat, and realize the one-way conduction of sweat.

[0087] Furthermore, the specific method of heat treatment for setting the blank is: the dyeing after the setting softening treatment is heated and set at a temperature not higher than 150°C to ensure that the fabric will not harden and maintain the softness of the grey cloth.

[0088] Further, in step A, the count of the compact spinning yarn is 45-55S;

[0089] The denier of the ordinary polyester I is 45 to 55D;

[0090] The denier of the spandex is 25 to 35D;

[0091] The deniers of the waterproof polyester and the ordinary polyester II are both 70-80D.

[0092] Due to the different thickness of the yarn, its softness, thickness, stiffness, coverage and elasticity are also different, and the sweat-wicking, warmth-keeping, sweat-visibility and wearing comfort of the obtained fabric are also different. Too thick or too thin yarn is not conducive to ensuring the quality of the product. Therefore, in a preferred embodiment of the present technical solution, the count of the compact spinning yarn is limited to 45-55S, the denier of spandex is limited to 15-70D, and the denier of polyester is limited to 30-75D, so as to further ensure that the obtained fabric can not only take into account the sweat-wicking and warmth-keeping properties at the same time, but also effectively avoid the technical problems of sweat-visibility and wearing discomfort.

[0093] It should be noted that the count refers to the multiple of a certain standard length of 1 pound of yarn when the official moisture regain is 8.5%. The larger the count, the thinner the yarn, and the standard length varies depending on the type of yarn. Cotton and cotton blended yarn is 840 yards, fine sulfur wool yarn is 560 yards, coarse sulfur cotton wool yarn is 256 yards, and linen yarn is 300 yards.

[0094] It should be further explained that denier refers to the weight in grams of 9,000 meters of silk at the official moisture regain of 8.5%, wherein the larger the denier number, the thicker the yarn.

[0095] Further, in step A, calculated by mass ratio, the mixing ratio of the modal and the cotton is 1:(4-5).

[0096] Compared with cotton, modal is more conducive to increasing the softness and hygroscopicity of compact spinning yarn. Therefore, in the technical solution, a certain proportion of modal is added to the compact spinning yarn to ensure the moisture absorption and perspiration properties and softness of the prepared fabric.

[0097] Further explanation, in step A, calculated by mass ratio, the yarn ratio of the horizontal surface yarn, the horizontal intermediate yarn and the horizontal bottom yarn is 1:(0.05-0.20):(1-1.2).

[0098] In a preferred embodiment of the present technical solution, by limiting the yarn ratio of the horizontal bottom yarn, the horizontal middle yarn and the horizontal surface yarn, on the one hand, it ensures that the air layer obtained by the horizontal middle yarn supports the fabric, avoiding that when the amount of the horizontal middle yarn is too small, the stiffness of the fabric is affected; on the other hand, it also ensures that the bottom yarn layer, the air layer and the surface yarn layer form a hygroscopic gradient, which is beneficial to the conduction of sweat and achieves the effect of perspiration.

[0099] A unidirectional moisture-wicking fabric is prepared using the above-mentioned method for preparing a unidirectional moisture-wicking fabric. The unidirectional moisture-wicking fabric has a permeable surface wetting time of ≥4 levels before washing, a permeable surface wetting time of ≥4 levels after washing, a permeable surface water absorption rate of ≥4 levels before washing, a permeable surface water absorption rate of ≥4 levels after washing, a unidirectional transfer index of ≥5 levels before washing, a unidirectional transfer index of ≥5 levels after washing, and a thermal insulation property of >25.5%.

[0100] The present technical scheme also proposes a one-way moisture-wicking fabric prepared by a method for preparing a one-way moisture-wicking fabric, wherein the wetting time of the permeable surface before washing is ≥ level 4, the wetting time of the permeable surface after washing is ≥ level 4, the water absorption rate of the permeable surface before washing is ≥ level 4, the water absorption rate of the permeable surface after washing is ≥ level 4, the one-way transfer index before washing is ≥ level 5, the one-way transfer index after washing is ≥ level 5, and the thermal insulation property is greater than 25.5%. It can not only take into account both perspiration and warmth retention, but also effectively avoid visible sweating, thus meeting actual use needs.

[0101] The technical solution of the present invention is further illustrated below through specific implementation methods.

[0102] Example 1

[0103] A. The grey fabric is woven by sandwich weaving method; the woven pattern is composed of a pattern cycle with twelve horizontal paths and four groups of weaving systems, and the pattern cycle includes horizontal path yarn, horizontal path bottom yarn and horizontal path middle yarn; wherein, the spinning raw material of the horizontal path yarn is 50S tight spinning yarn spun from cotton and modal, the spinning raw material of the horizontal path middle yarn is 50D ordinary polyester Ⅰ, and the spinning raw material of the horizontal path bottom yarn is a blended yarn Ⅰ composed of 75D waterproof polyester and 30D spandex and a blended yarn Ⅱ composed of 75D ordinary polyester Ⅱ and 30D spandex; calculated by mass ratio, the mixing ratio of modal and cotton is 1:4; calculated by mass ratio, the yarn ratio of horizontal path yarn, horizontal path middle yarn and horizontal path bottom yarn is 1:0.2:1; one horizontal path bottom yarn, one horizontal path middle yarn and one horizontal path yarn constitute a group of weaving systems, one horizontal path bottom yarn, one horizontal path middle yarn and one horizontal path yarn correspond to one working position respectively, and each group of weaving systems performs three working positions Needle selection, each work position has two knitting needle positions; the four knitting systems are respectively the first knitting system, the second knitting system, the third knitting system and the fourth knitting system, and the two knitting needle positions are respectively the first knitting needle position and the second knitting needle position; the upper needle discs of the first knitting needle position and the upper needle discs of the second knitting needle position of the horizontal bottom yarn of all knitting systems are involved in knitting; the upper needle discs of the first knitting needle position and the lower needle discs of the second knitting needle position of the horizontal middle yarn of the first knitting system and the third knitting system are involved in tucking, and the lower needle discs of the first knitting needle position and the upper needle discs of the second knitting needle position of the horizontal middle yarn of the second knitting system and the fourth knitting system are involved in tucking; the lower needle discs of the first knitting needle position and the lower needle discs of the second knitting needle position of the horizontal surface yarn of all knitting systems are involved in knitting; the spinning raw materials of the horizontal bottom yarn of the first knitting system and the second knitting system are blended yarn I, and the spinning raw materials of the horizontal bottom yarn of the third knitting system and the fourth knitting system are blended yarn II;

[0104] B. performing a loosening process and a dry-cloth setting process on the grey cloth in sequence to obtain an intermediate grey cloth; wherein the specific method of the loosening process is: placing the grey cloth in a relaxed state for 12 hours; and the specific method of the dry-cloth setting process is: heating and dry-setting the grey cloth obtained after the loosening process at a temperature of 185°C;

[0105] C. The intermediate grey cloth is subjected to scouring, washing, neutralization and dyeing treatments in sequence to obtain a dyed grey cloth; wherein the specific method of scouring and bleaching treatment is: the intermediate grey cloth is scouring with scouring liquid, the scouring temperature is 95°C, and the scouring time is 50 minutes; the scouring liquid includes 2g / L of a refining agent, 0.5g / L of a stabilizer, 5g / L of liquid alkali and 8g / L of hydrogen peroxide; the specific method of washing treatment is: the grey cloth obtained after scouring and bleaching is washed with 70°C water for 9 minutes; the specific method of neutralization treatment is: the grey cloth after washing is placed in an acetic acid aqueous solution and soaked for 10 minutes, and the concentration of the acetic acid aqueous solution is 0.8g / L and the temperature is 45°C; the specific method of dyeing treatment is: the grey cloth after neutralization treatment is dyed with a dye aqueous solution for 25 minutes, the temperature of the dye aqueous solution is 60°C, and then sodium sulfate is added to the dye aqueous solution and stirred for 20 minutes; sodium carbonate is continuously added to the dye aqueous solution and stirred for 25 minutes; finally, the solution is kept warm at 60°C for 60 minutes;

[0106] D. The dyed grey fabric is sequentially subjected to washing and drying treatment, shaping and softening treatment and shaping and heating treatment to obtain a one-way moisture conduction and perspiration wicking fabric; wherein, the specific method of the washing and drying treatment is: washing with 75°C warm water, and then washing with 5°C cold water. After washing, the fabric is placed in a drying room for drying treatment, wherein the drying temperature of the drying treatment step is 100°C; the specific method of shaping and softening treatment is: softening and shaping the washed and dried dyed grey fabric with 20g / L hydrophilic softening oil, wherein the shaping temperature is 130°C, the shaping time is 5min, and the hydrophilic softening oil is a hydrophilic softening oil agent of Guangzhou Zhuangjie Chemical Co., Ltd., with a brand number of 8011; the specific method of the shaping and heating treatment is: heating and shaping the dyed grey fabric after the shaping and softening treatment at a temperature of 140°C.

[0107] Example 2

[0108] A. The grey fabric is woven by sandwich weaving method; the woven pattern is composed of a pattern cycle with twelve horizontal paths and four groups of weaving systems, and the pattern cycle includes horizontal path yarn, horizontal path bottom yarn and horizontal path middle yarn; wherein, the spinning raw material of the horizontal path yarn is 45S compact spinning yarn spun from cotton and modal, the spinning raw material of the horizontal path middle yarn is 55D ordinary polyester Ⅰ, and the spinning raw material of the horizontal path bottom yarn is a blended yarn Ⅰ composed of 70D waterproof polyester and 35D spandex and a blended yarn Ⅱ composed of 70D ordinary polyester Ⅱ and 25D spandex; calculated by mass ratio, the mixing ratio of modal and cotton is 1:5; calculated by mass ratio, the yarn ratio of horizontal path yarn, horizontal path middle yarn and horizontal path bottom yarn is 1:0.05:1.1; one horizontal path bottom yarn, one horizontal path middle yarn and one horizontal path yarn constitute a group of weaving systems, one horizontal path bottom yarn, one horizontal path middle yarn and one horizontal path yarn correspond to one work position respectively, and each group of weaving systems is subjected to three The work position needle selection has two knitting needle positions in total for each work position; the four knitting systems are respectively the first knitting system, the second knitting system, the third knitting system and the fourth knitting system, and the two knitting needle positions are respectively the first knitting needle position and the second knitting needle position; the upper needle discs of the first knitting needle position and the upper needle discs of the second knitting needle position of the horizontal bottom yarn of all knitting systems are involved in knitting; the upper needle discs of the first knitting needle position and the lower needle discs of the second knitting needle position of the horizontal middle yarn of the first knitting system and the third knitting system are involved in tucking, and the lower needle discs of the first knitting needle position and the upper needle discs of the second knitting needle position of the horizontal middle yarn of the second knitting system and the fourth knitting system are involved in tucking; the lower needle discs of the first knitting needle position and the lower needle discs of the second knitting needle position of the horizontal surface yarn of all knitting systems are involved in knitting; the spinning raw material of the horizontal bottom yarn of the first knitting system and the second knitting system is the blended yarn I, and the spinning raw material of the horizontal bottom yarn of the third knitting system and the fourth knitting system is the blended yarn II;

[0109] B. performing a loosening process and a dry-setting process on the grey cloth in sequence to obtain an intermediate grey cloth; wherein the specific method of the loosening process is: placing the grey cloth in a relaxed state for 13 hours; and the specific method of the dry-setting process is: heating and dry-setting the grey cloth obtained after the loosening process at a temperature of 180°C;

[0110] C. The intermediate grey cloth is subjected to scouring, bleaching, washing, neutralization and dyeing treatments in sequence to obtain dyed grey cloth; wherein the specific method of scouring and bleaching treatment is: the intermediate grey cloth is scouring with scouring and bleaching liquid, the scouring and bleaching temperature is 95°C, and the scouring and bleaching time is 45 minutes; the scouring and bleaching liquid comprises 1.5g / L of scouring agent, 0.5g / L of stabilizer, 5g / L of liquid alkali and 6g / L of hydrogen peroxide; the specific method of washing treatment is: the grey cloth obtained after scouring and bleaching treatment is washed with 70°C water for 10 minutes; the neutralization treatment is carried out. The specific method is as follows: the grey cloth after washing is placed in an acetic acid aqueous solution and soaked for 10 minutes, and the concentration of the acetic acid aqueous solution is 1.0 g / L and the temperature is 50°C; the specific method of dyeing is as follows: the grey cloth after neutralization is dyed with a dye aqueous solution for 20 minutes, and the temperature of the dye aqueous solution is 70°C; then sodium sulfate is added to the dye aqueous solution and stirred for 20 minutes; sodium carbonate is continuously added to the dye aqueous solution and stirred for 30 minutes; and finally, the solution is kept warm at a temperature of 60°C for 60 minutes;

[0111] D. The dyed grey fabric is sequentially subjected to washing and drying treatment, shaping and softening treatment and shaping and heating treatment to obtain a one-way moisture conduction and perspiration wicking fabric; wherein, the specific method of the washing and drying treatment is: washing with 80°C warm water, and then washing with 8°C cold water. After washing, the fabric is placed in a drying room for drying treatment; wherein, the drying temperature of the drying treatment is 100°C; the specific method of the shaping and softening treatment is: softening and shaping the dyed grey fabric after washing and drying with 20g / L of a hydrophilic softening oil agent, wherein, the shaping temperature is 140°C, the shaping time is 6min, and the hydrophilic softening oil is a hydrophilic softening oil agent of Guangzhou Zhuangjie Chemical Co., Ltd., with a brand number of 8011; the specific method of the shaping and heating treatment is: heating and shaping the dyed grey fabric after the shaping and softening treatment at a temperature of 145°C.

[0112] Example 3

[0113] A. The grey fabric is woven by sandwich weaving method; the woven pattern is composed of a pattern cycle with twelve horizontal paths and four groups of weaving systems, and the pattern cycle includes horizontal path yarn, horizontal path bottom yarn and horizontal path middle yarn; wherein, the spinning raw material of the horizontal path yarn is 55S compact spinning yarn spun from cotton and modal, the spinning raw material of the horizontal path middle yarn is 45D ordinary polyester Ⅰ, and the spinning raw material of the horizontal path bottom yarn is a blended yarn Ⅰ composed of 70D waterproof polyester and 25D spandex and a blended yarn Ⅱ composed of 70D ordinary polyester Ⅱ and 25D spandex; calculated by mass ratio, the mixing ratio of modal and cotton is 1:4.5; calculated by mass ratio, the yarn ratio of horizontal path yarn, horizontal path middle yarn and horizontal path bottom yarn is 1:0.1:1.1; one horizontal path bottom yarn, one horizontal path middle yarn and one horizontal path yarn constitute a group of weaving systems, one horizontal path bottom yarn, one horizontal path middle yarn and one horizontal path yarn correspond to one work position respectively, and each group of weaving systems is subjected to three The work position needle selection has two knitting needle positions in total for each work position; the four knitting systems are respectively the first knitting system, the second knitting system, the third knitting system and the fourth knitting system, and the two knitting needle positions are respectively the first knitting needle position and the second knitting needle position; the upper needle discs of the first knitting needle position and the upper needle discs of the second knitting needle position of the horizontal bottom yarn of all knitting systems are involved in knitting; the upper needle discs of the first knitting needle position and the lower needle discs of the second knitting needle position of the horizontal middle yarn of the first knitting system and the third knitting system are involved in tucking, and the lower needle discs of the first knitting needle position and the upper needle discs of the second knitting needle position of the horizontal middle yarn of the second knitting system and the fourth knitting system are involved in tucking; the lower needle discs of the first knitting needle position and the lower needle discs of the second knitting needle position of the horizontal surface yarn of all knitting systems are involved in knitting; the spinning raw material of the horizontal bottom yarn of the first knitting system and the second knitting system is the blended yarn I, and the spinning raw material of the horizontal bottom yarn of the third knitting system and the fourth knitting system is the blended yarn II;

[0114] B. performing a loosening process and a dry-setting process on the grey cloth in sequence to obtain an intermediate grey cloth; wherein the specific method of the loosening process is: placing the grey cloth in a relaxed state for 14; and the specific method of the dry-setting process is: heating and dry-setting the grey cloth obtained after the loosening process at a temperature of 190° C.;

[0115] C. The intermediate grey cloth is subjected to scouring, washing, neutralization and dyeing treatments in sequence to obtain a dyed grey cloth; wherein the specific method of scouring and bleaching treatment is: the intermediate grey cloth is scouring with scouring and bleaching liquid, the scouring and bleaching temperature is 100°C, and the scouring and bleaching time is 45 minutes; the scouring and bleaching liquid includes 2g / L of refining agent, 0.3g / L of stabilizer, 5g / L of liquid alkali and 6g / L of hydrogen peroxide; the specific method of washing treatment is: the grey cloth obtained after scouring and bleaching is washed with 80°C water for 10 minutes; the specific method of neutralization treatment is: the grey cloth after washing is placed in an acetic acid aqueous solution and soaked for 10 minutes, and the concentration of the acetic acid aqueous solution is 0.8g / L, and the temperature is 45°C; the specific method of dyeing treatment is: the grey cloth after neutralization treatment is dyed with a dye aqueous solution for 20 minutes, and the temperature of the dye aqueous solution is 80°C; then sodium sulfate is added to the dye aqueous solution and stirred for 15 minutes; sodium carbonate is continuously added to the dye aqueous solution and stirred for 25 minutes; finally, the solution is kept warm at 60°C for 70 minutes;

[0116] D. The dyed grey fabric is sequentially subjected to washing and drying treatment, shaping and softening treatment and shaping and heating treatment to obtain a one-way moisture conduction and perspiration wicking fabric; wherein, the specific method of washing and drying treatment is: washing with 80°C warm water, and then washing with 5°C cold water. After washing, the fabric is placed in a drying room for drying treatment; wherein, the drying temperature of the drying treatment is 100°C; the specific method of shaping and softening treatment is: softening and shaping the washed and dried dyed grey fabric with 20g / L hydrophilic softening oil agent, wherein, the shaping temperature is 150°C, the shaping time is 5min, and the hydrophilic softening oil is a hydrophilic softening oil agent of Guangzhou Zhuangjie Chemical Co., Ltd., with a brand number of 8011; the specific method of shaping and heating treatment is: heating and shaping the dyed grey fabric after shaping and softening treatment at a temperature of 130°C.

[0117] Comparative Example 1

[0118] Except that the weaving method in step A is different from that in Example 1, the rest of this comparative example is the same as Example 1. Specifically, Comparative Example 2 is woven into a grey cloth using a double-sided weaving method, and its specific weaving method is: the woven pattern is composed of a pattern loop with eight horizontal paths and two groups of weaving systems, and the pattern loop includes horizontal path yarns and horizontal path bottom yarns; wherein, the spinning raw material of the horizontal path yarn is 50S tight spinning yarn spun from cotton and modal, and the spinning raw material of the horizontal path bottom yarn is a blended yarn Ⅰ composed of 75D waterproof polyester and 30D spandex and a blended yarn Ⅱ composed of 75D ordinary polyester Ⅱ and 30D spandex; calculated by mass ratio, the mixing ratio of modal and cotton is 1:4; calculated by mass ratio, the yarn ratio of horizontal path yarn and horizontal path bottom yarn is 1:1; one horizontal path yarn and one horizontal path bottom yarn form a weaving system, and one horizontal path bottom yarn One work position corresponds to each horizontal yarn, and each weaving system selects needles at two work positions, with two knitting needle positions in total for each work position; the four weaving systems are respectively the first weaving system, the second weaving system, the third weaving system and the fourth weaving system, and the two knitting needle positions are respectively the first knitting needle position and the second knitting needle position; the upper needle discs of the first knitting needle position and the upper needle discs of the second knitting needle position of the horizontal bottom yarn of all weaving systems participate in the weaving; the lower needle discs of the first knitting needle position and the lower needle discs of the second knitting needle position of the horizontal bottom yarn of all weaving systems participate in the weaving; the spinning raw materials of the horizontal bottom yarns of the first weaving system and the second weaving system are blended yarn I, and the spinning raw materials of the horizontal bottom yarns of the third weaving system and the fourth weaving system are blended yarn II.

[0119] Comparative Example 2

[0120] This comparative example is the same as Example 1 except that the spinning material of the horizontal bottom yarn in step A is different from that of Example 1. Specifically, the spinning material of the horizontal bottom yarn is a blended yarn I composed of waterproof polyester and spandex.

[0121] Comparative Example 3

[0122] This comparative example is the same as Example 1 except that the spinning material of the horizontal bottom yarn in step A is different from that of Example 1. Specifically, the spinning material of the horizontal bottom yarn is a blended yarn II composed of ordinary polyester II and spandex.

[0123] The fabrics prepared in the embodiment and the comparative example were weighed using an electronic balance; the fabrics prepared in the embodiment and the comparative example were tested for the wetting time of the permeable surface before washing, the wetting time of the permeable surface after washing, the water absorption rate of the permeable surface before washing, the water absorption rate of the permeable surface after washing, the one-way transfer index before washing, and the one-way transfer index after washing using the "GB / T 21655.2-2019 Evaluation of Moisture Absorption and Quick Drying of Textiles Part 2 Dynamic Moisture Transfer Method". Among them, the washing method is to wash 5 times according to the "GB / T 8629-2017.4 Household Washing and Drying Procedure for Textile Testing" program and hang to dry. In addition, the fabrics prepared in the embodiment and the comparative example were tested for thermal insulation using the "GBT35762-2017 Test Method for Thermal Transfer Performance of Textiles".

[0124] Table 1 Performance test results of fabrics obtained by different preparation methods in the embodiments and comparative examples

[0125]

[0126] From the performance test results of the embodiments and comparative examples in Table 1 above, it can be seen that the unidirectional moisture-wicking fabric prepared by the preparation method of a unidirectional moisture-wicking fabric has a permeable surface wetting time before washing ≥ level 4, a permeable surface wetting time after washing ≥ level 4, a permeable surface water absorption rate before washing ≥ level 4, a permeable surface water absorption rate after washing ≥ level 4, a unidirectional transfer index before washing ≥ level 5, a unidirectional transfer index after washing ≥ level 5, and a thermal insulation property greater than 25.5%. It can not only take into account both perspiration and warmth retention, but also effectively avoid the technical problems of visible sweating and uncomfortable wearing, thereby meeting actual use needs.

[0127] Since the sandwich weaving method is replaced by the double-sided weaving method in Comparative Example 1, an air layer cannot be formed, resulting in a decrease in the warmth retention, wearing comfort and sweat-avoiding performance of the obtained fabric.

[0128] Since the spinning raw material of the horizontal bottom yarn in Comparative Example 2 is a blended yarn Ⅰ composed of waterproof polyester and spandex, the bottom yarn layer will form a completely hydrophobic barrier, resulting in the inability of human sweat to penetrate the bottom yarn layer and conduct outward, resulting in the reduced perspiration, wearing comfort and sweat-avoiding performance of the resulting fabric.

[0129] For the spinning raw material of the horizontal bottom yarn in Comparative Example 3, the blended yarn II composed of ordinary polyester II and spandex, ordinary polyester II lacks an effective isolation mechanism, and the conducted sweat easily permeates to the human body surface, causing sweat to accumulate between the bottom yarn layer and the human body surface, thereby causing sweating and wearing discomfort. At the same time, the conducted sweat easily permeates to the human body surface, which also leads to a decrease in warmth retention.

[0130] It should be noted that when the one-way transfer index of the fabric before and after washing is high, it will not easily show sweat, nor will it easily cause the retained sweat to cause the fabric to stick to the human body surface, thereby ensuring wearing comfort. That is, in this technical solution, the one-way transfer index of the fabric before and after washing can be used to characterize the wearing comfort and sweat visibility of the fabric.

[0131] The technical principle of the present invention is described above in conjunction with specific embodiments. These descriptions are only for explaining the principle of the present invention and cannot be interpreted as limiting the scope of protection of the present invention in any way. Based on the explanations herein, those skilled in the art can associate other specific implementations of the present invention without paying creative labor, and these methods will fall within the scope of protection of the present invention.

Claims

1. A method for preparing a one-way moisture-wicking fabric, characterized in that: The following steps are involved: A. The grey cloth is woven by sandwich weaving; wherein the raw material of the horizontal surface yarn is a compact spinning yarn made of cotton and modal, the raw material of the horizontal middle yarn is ordinary polyester I, and the raw material of the horizontal bottom yarn is a blended yarn I composed of waterproof polyester and spandex, and a blended yarn II composed of ordinary polyester II and spandex, and in the weaving process, the blended yarn I and the blended yarn II are alternated in units of two times; Wherein, the denier of the waterproof polyester is the same as the denier of the ordinary polyester II, and the denier of the ordinary polyester I is smaller than the denier of the ordinary polyester II; B. performing a loosening process and a dry-cloth fixing process on the grey cloth in sequence to obtain an intermediate grey cloth; C. performing boiling and bleaching treatment, washing treatment, neutralization treatment and dyeing treatment on the intermediate grey cloth in sequence to obtain a dyed grey cloth; D. The dyed grey fabric is sequentially subjected to washing and drying treatment, shaping and softening treatment, and grey heating treatment to obtain a unidirectional moisture conduction and perspiration wicking fabric.

2. The method for preparing a one-way moisture-wicking fabric according to claim 1, characterized in that: In step A, the specific steps of weaving the grey cloth by sandwich weaving are as follows: the woven pattern is composed of a pattern cycle with twelve horizontal paths and four groups of weaving systems, the pattern cycle includes horizontal path surface yarn, horizontal path bottom yarn and horizontal path middle yarn, one horizontal path bottom yarn, one horizontal path middle yarn and one horizontal path surface yarn constitute a group of weaving systems, one horizontal path bottom yarn, one horizontal path middle yarn and one horizontal path surface yarn correspond to one work position respectively, each group of weaving systems performs three work position needle selection, and each work position has two weaving needle positions; The spinning raw materials of the horizontal bottom yarns of the first two groups of weaving systems in the four weaving systems are blended yarn I; the spinning raw materials of the horizontal bottom yarns of the remaining two groups of weaving systems in the four weaving systems are blended yarn II.

3. The method for preparing a one-way moisture-wicking fabric according to claim 2, characterized in that four groups The knitting systems are respectively a first knitting system, a second knitting system, a third knitting system and a fourth knitting system, and the two knitting needle positions are respectively a first knitting needle position and a second knitting needle position; The upper needle discs of the first knitting needle position and the upper needle discs of the second knitting needle position of the horizontal bottom yarn of all knitting systems participate in knitting; the upper needle discs of the first knitting needle position and the lower needle discs of the second knitting needle position of the horizontal intermediate yarn of the first knitting system and the third knitting system participate in tucking, the lower needle discs of the first knitting needle position and the upper needle discs of the second knitting needle position of the horizontal intermediate yarn of the second knitting system and the fourth knitting system participate in tucking, and the lower needle discs of the first knitting needle position and the lower needle discs of the second knitting needle position of the horizontal surface yarn of all knitting systems participate in knitting; The spinning material of the horizontal base yarn of the first weaving system and the second weaving system is the blended yarn I, and the spinning material of the horizontal base yarn of the third weaving system and the fourth weaving system is the blended yarn II.

4. The method for preparing a one-way moisture-wicking fabric according to claim 1, characterized in that: In step B, the specific method of the cloth loosening treatment is: placing the grey cloth in a relaxed state for more than 12 hours; The specific method of the dry cloth setting treatment is: heating the grey cloth obtained after the loose cloth treatment at a temperature not higher than 190°C to dry set.

5. The method for preparing a one-way moisture-wicking fabric according to claim 1, characterized in that: In step C, the specific method of the scouring and bleaching treatment is: scouring the intermediate grey cloth with a scouring and bleaching liquid, the scouring and bleaching temperature is 95-100° C., and the scouring and bleaching time is 45-55 minutes; the scouring and bleaching liquid includes 1.5-2.5 g / L of a refining agent, 0.3-0.8 g / L of a stabilizer, 5-7 g / L of liquid alkali and 4-8 g / L of hydrogen peroxide; The specific method of the washing water treatment is: washing the grey cloth obtained after the scouring and bleaching treatment with water at 70 to 90° C. for 8 to 15 minutes; The specific method of the neutralization treatment is: placing the grey cloth after the washing treatment in an acetic acid aqueous solution and soaking it for 5 to 15 minutes, and the concentration of the acetic acid aqueous solution is 0.8 to 1.2 g / L, and the temperature is 45 to 55° C.; The specific method of the dyeing treatment is: dyeing the neutralized grey cloth with a dye aqueous solution for 20 to 30 minutes, and the temperature of the dye aqueous solution is 60 to 80°C; then adding sodium sulfate to the dye aqueous solution and stirring for 15 to 25 minutes; continuing to add sodium carbonate to the dye aqueous solution and stirring for 25 to 35 minutes; finally keeping the temperature at 60 to 80°C for 50 to 70 minutes.

6. The method for preparing a one-way moisture-wicking fabric according to claim 1, characterized in that: In step D, the specific method of the washing and drying treatment is: washing with warm water at 70-90°C, and then washing with cold water at 5-10°C. After washing, placing in a drying room for drying treatment; wherein the drying temperature of the drying treatment is 100-110°C; The specific method of the setting and softening treatment is: using 20-30 g / L of a hydrophilic softening agent to soften and set the dyed grey cloth after washing and drying, wherein the setting temperature is 130-150° C. and the setting time is 5-10 min; The specific method of the heat treatment for setting is: heating and setting the dyed grey cloth after the setting and softening treatment at a temperature not higher than 150°C.

7. The method for preparing a one-way moisture-wicking fabric according to claim 1, characterized in that: In step A, the count of the compact spinning yarn is 45-55S; The denier of the ordinary polyester I is 45 to 55D; The denier of the spandex is 25 to 35D; The deniers of the waterproof polyester and the ordinary polyester II are both 70-80D.

8. The method for preparing a one-way moisture conduction and perspiration wicking fabric according to claim 1, characterized in that: In step A, calculated by mass ratio, the mixing ratio of the modal and the cotton is 1:(4-5).

9. The method for preparing a one-way moisture-wicking fabric according to claim 1, characterized in that: In step A, calculated by mass ratio, the yarn ratio of the horizontal ground yarn, the horizontal intermediate yarn and the horizontal bottom yarn is 1:(0.05-0.20):(1-1.2).

10. A one-way moisture-wicking fabric, characterized in that , prepared using the preparation method of a unidirectional moisture-wicking fabric described in any one of claims 1 to 9, the unidirectional moisture-wicking fabric has a permeable surface wetting time ≥ level 4 before washing, a permeable surface wetting time ≥ level 4 after washing, a permeable surface water absorption rate ≥ level 4 before washing, a permeable surface water absorption rate ≥ level 4 after washing, a unidirectional transfer index ≥ level 5 before washing, a unidirectional transfer index ≥ level 5 after washing, and thermal insulation > 25.5%.

Images