A double-sided basic structure differential moisture-conducting fabric

Abstract

A double-sided basic structure differential moisture-conducting fabric, comprising a fabric body, wherein the fabric body is a weft knitted fabric formed by the interweaving of a first yarn and a second yarn, having a clothing side and a skin-friendly side. Both the first yarn and the second yarn include at least one yarn; the diameter of the first yarn is greater than that of the second yarn; the fabric body has a number of unit repeating structures woven by the first yarn and the second yarn arranged adjacent to or alternating with each other. In a unit repeating structure, the length distribution ratio of any one of the first yarn or the second yarn on the clothing side and the skin-friendly side is 1:1, so that the clothing side and the skin-friendly side have the same basic structure, so as to achieve a two-sided differential moisture-conducting ability of liquid water transferring from the skin-friendly side of the fabric body to the clothing side ≥ 100%. The unidirectional moisture-conducting ability of the present invention is uniform and stable, and it is dry, comfortable and non-sticky to wear, and is suitable for making T-shirts, trousers, shirts, etc.

Description

Technical Field

[0001] The present invention relates to the technical field of textile fabrics, and more specifically, to a differential moisture-conducting fabric with a double-sided basic structure. Background Art

[0002] The phenomenon of unidirectional conduction widely exists in nature, such as the nerve conduction, water and energy transfer of plants. Through bionic design, unidirectional conduction effectively solves many practical problems in separation or collection processes, such as oil-water separation and fog water capture. In recent years, people have put forward higher requirements for the comfort and functionality of clothing, and multifunctional textiles such as waterproof and moisture-permeable, moisture-absorbing and quick-drying, and heat-conducting and cool-sensing have received extensive attention.

[0003] Currently, there are mainly two methods for producing unidirectional moisture-conducting fabrics in the industry: one is to print a water-repellent pattern on the reverse side of the fabric using a coating or printing process, and the pattern area accounts for 20%

[0004] -80% of the total reverse area. For example, Publication No. CN1831233A discloses a comfortable and quick-drying fabric with hydrophilic and hydrophobic property differences on the inner and outer layers and its production method, which uses a method of applying a hydrophobic coating or hydrophobic printing on the reverse side of the fabric to achieve the effect of double-sided anisotropy and unidirectional sweating.

[0005] Patent Application CN201911344139.7, "A Preparation Method of a Multifunctional Unidirectional Moisture-Conducting Cotton Fabric", discloses a unidirectional conduction fabric formed by combining a functional material with a fabric by means of coating. The main steps include: (1) hydrophobically modifying fumed nano-silica with a silane coupling agent, dispersing it in absolute ethanol to prepare a hydrophobic fumed nano-silica absolute ethanol dispersion; (2) mixing the hydrophobic fumed nano-silica absolute ethanol dispersion with a fluorine-containing water repellent to prepare a water-repellent coating agent; (3) performing single-sided interval coating finishing on the cotton fabric with the water-repellent coating agent, and after pre-drying and baking, obtaining a multifunctional unidirectional moisture-conducting cotton fabric.

[0006] The above methods have high requirements for the process parameters of coating or printing, and the printed thickness must be precisely controlled; if the thickness is too small, the washability is poor, and if the thickness is too large, it will affect the hydrophilic property and hand feeling of the front side of the fabric, thereby reducing the unidirectional moisture-conducting performance of the fabric. This method is suitable for processing fabrics with a relatively flat reverse side and is not suitable for fabric types with a suede or concave-convex structure on the reverse side.

[0007] The other is to weave a fabric with hydrophilic yarns on the front side and water-repellent yarns on the reverse side. For example, Publication No. CN205329268U discloses a moisture-absorbing and quick-drying knitted fabric, a method for developing unidirectional moisture-conducting and moisture-absorbing and quick-drying products using pure cotton materials.

[0008] Patent Application CN201811027306.0, "A Multifunctional Unidirectional Moisture-conducting Fabric", discloses a multifunctional unidirectional moisture-conducting fabric which is a double-sided knitted mesh fabric. The grey fabric with a double-sided structure is woven by a double-sided knitting machine. The inner layer of the grey fabric is formed with a mesh structure by the knitting method of tuck stitch. The surface area of the outer layer of the grey fabric is larger than that of the inner layer. The yarn forming the inner layer is polyethylene yarn or polyethylene composite fiber yarn, and the yarn forming the outer layer is a yarn with good water absorption. It has the functions of being cool and smooth, easy to dye, unidirectional moisture-conducting and anti-ultraviolet.

[0009] Mainly, hydrophilic finishing yarns and water-repellent finishing yarns present certain hydrophilic points and water-repellent points on the reverse side of the knitted fabric, forming a hydrophobic surface with certain hydrophilic points on the reverse side of the fabric, and the front side of the fabric is entirely hydrophilic, thus achieving the functions of unidirectional moisture-conducting, fast moisture absorption and quick drying. Due to the method of arranging hydrophilic yarns and water-repellent yarns at intervals, if yarns of the same color number and yarn count are used during production, it is very easy to produce the situation of wrong yarn arrangement just by distinguishing based on the difference in hydrophilicity. In addition, the molecular weight of the waterproof agent is relatively large. When doing water-repellent finishing on cheese yarns, it is very difficult to ensure the uniform water-repellent effect of the inner and outer layers of the cheese yarns, which affects the moisture absorption and unidirectional moisture-conducting effects of the final finished fabric.

[0010] Another example is that Publication No. CN101864636A discloses a shuttle fabric with double-sided anisotropy, unidirectional sweat-conducting and fast-drying functions and its production method. It uses a ply yarn formed by combining hydrophilic single yarns and water-repellent single yarns to weave the reverse side of the fabric, and the front side is entirely woven with hydrophilic yarns, and cooperates with a special tissue structure to develop a shuttle fabric with unidirectional moisture-conducting, fast moisture absorption and quick drying. By the method of combining hydrophilic single yarns and water-repellent single yarns, the problem of complex yarn arrangement and difficult production of hydrophilic yarns and water-repellent yarns on the reverse side is solved. However, when using ply yarns to weave the reverse side of the fabric, the production cost and processing cycle of ply yarns with the same yarn count are much higher than those of single yarns, and there are still problems such as uneven water-repellent effect and poor washability when doing water-repellent treatment on the above-mentioned yarns.

[0011] In summary, the existing patented fabrics achieve the unidirectional conduction function through post-treatment, structural design and other technologies. The unidirectional conduction fabrics achieved by post-treatment methods such as printing or coating have poor washability of the unidirectional conduction function, a feeling of being too hard and dry, which affects the softness and comfort during wearing. Moreover, this process is applicable to flat fabric surfaces and not applicable to fabric types with fluff or concave-convex structures on the reverse side. Also, the fabric body is relatively thick, resulting in a sense of oppression during wearing and lacking in heat preservation performance. The existing double-sided patented fabrics achieve the single-directional conduction function through structural design combined with raw material matching. For example, the clothing surface uses a mesh structure, while the skin-contact surface uses a plain weave structure, etc. Since the plain weave structure has fewer voids, it is not conducive to the contact and diffusion of sweat to the water-absorbing material on the clothing surface. The existing processing methods for unidirectional moisture-conducting fabrics have disadvantages such as a narrow range of suitable fabrics, high production and processing costs, and unsatisfactory unidirectional moisture-conducting effects. Moreover, the existing methods do not study the influence of the structure of the processed fabric on the unidirectional moisture-conducting effect. Therefore, to solve the above problems existing in the industry, there is an urgent need to provide a double-sided basic structure differential moisture-conducting fabric with good washability and reproducibility, uniform and stable unidirectional moisture-conducting ability, and a dry and comfortable wearing experience without sticking to the body. Summary of the Invention

[0012] The technical problem to be solved by the present invention is to provide a double-sided basic structure differential moisture-conducting fabric.

[0013] To solve the above technical problems, the present invention adopts the following technical solutions:

[0014] A double-sided basic structure differential moisture-conducting fabric, including a fabric body, characterized in that the fabric body is a weft-knitted fabric formed by the interweaving of a first yarn and a second yarn, having a clothing surface and a skin-contact surface. Both the first yarn and the second yarn include at least one yarn;

[0015] The ratio of the diameter of the first yarn to the diameter of the second yarn ≥ 1.2, and the ratio of the water-conducting ability of the first yarn to the water-conducting ability of the second yarn ≤ 1.5. The contact angle of the second yarn ≤ the contact angle of the first yarn. There is a distance difference between the second yarn and the outer surfaces of the clothing surface and the skin-contact surface to form a breathable area. The first yarn is in direct contact with the outside world by adhering to the outer surfaces of the clothing surface and the skin-contact surface, so that the contact distances of the first yarn and the second yarn with the outside world are different;

[0016] m first yarns and n second yarns are arranged and woven in an adjacent or alternating manner to form a unit repeating structure of the fabric body, m ≤ 4, n ≤ 5. The fabric body is composed of several unit repeating structures. In a unit repeating structure, the length distribution ratio of any one yarn in the first yarn or the second yarn on the clothing surface and the skin-contact surface is 1:1, so that the clothing surface and the skin-contact surface have the same basic structure, and the differential moisture-conducting ability of the skin-contact surface and the clothing surface of the fabric body ≥ 100%.

[0017] The positions of the first yarn and the second yarn in the skin-contact surface correspond to the positions of the second yarn and the first yarn in the garment surface.

[0018] In the described one-unit repeating structure, it includes m first yarns and n second yarns, and m ≤ 2, n ≤ 3.

[0019] The first yarn is made of any one or any combination of two or more of polyester fibers, polyamide fibers, and cellulose fibers, and the surface contact angle of the first yarn ≥ 40°.

[0020] The second yarn is made of any one or a combination of two or more of polyester fibers, polyamide fibers, natural fibers, regenerated cellulose fibers, and polyester fibers, and the surface contact angle of the second yarn ≤ 70°.

[0021] The fabric body further includes spandex elastic fibers, and the spandex elastic fibers are woven in the garment surface and / or the skin-contact surface of the fabric body.

[0022] The content of spandex elastic fibers in the fabric body is greater than 5%.

[0023] The garment surface and / or the skin-contact surface of the fabric body is a smooth surface or is subjected to flocking treatment to form a fluffy surface.

[0024] The present invention has the following beneficial effects:

[0025] The garment surface and the skin-contact surface are woven with the first yarn and the second yarn of different diameters, and the distribution lengths of the yarns in the garment surface and the skin-contact surface are the same, so that the basic structures of the garment surface and the skin-contact surface are the same, and there is no structural two-sided difference between the garment surface and the skin-contact surface, so as to achieve that the two-sided differential moisture conduction ability of liquid water transferred from the skin-contact surface of the fabric body to the garment surface ≥ 100%.

[0026] The diameter of the first yarn is greater than that of the second yarn, and preferably the first yarn is a thick yarn with low water conduction ability and the second yarn is a fine yarn with high water conduction ability, so that the probability of the high water conduction ability yarn contacting the skin decreases, the area of the fine yarn away from the skin contact is formed, an air convection-enhancing breathable area, i.e., micro-holes, is formed, the air permeability is increased, thereby reducing the wet and sticky feeling after sweating and slowing down the horizontal diffusion of moisture on the skin-contact surface. And the first yarn (thick yarn) and the second yarn (fine yarn) are both evaporation surfaces, and the moisture evaporated on the fabric, thereby increasing the differential moisture conduction ability and keeping the skin-contact surface always dry, comfortable and non-greasy. Description of the Drawings

[0027] Attached Figure 1 It is a partially cut-away schematic view of the fabric body of the present invention. Detailed Embodiments

[0028] To further understand the features, technical means, specific purposes, and functions achieved by the present invention, the present invention will be further described in detail below in conjunction with the accompanying drawings and specific embodiments.

[0029] As shown in the Figure 1 accompanying drawings, the present invention discloses a double-sided base structure differential moisture-conducting fabric, including a fabric body. The fabric body includes a first yarn Y 1 and a second yarn Y 2 . Both the first yarn Y 1 and the second yarn Y 2 include at least one yarn, that is, both the first yarn Y 1 and the second yarn Y 2 can contain one yarn, two yarns, three yarns, or other quantities. The first yarn Y 1 and the second yarn Y 2 interweave with each other to form the clothing surface 1 and the skin-friendly surface 2 of the fabric body, and are integrally formed into a weft knitted fabric.

[0030] The diameter of the first yarn Y 1 is larger than the diameter of the second yarn Y 2 . The first yarn Y 1 can be defined as a thick yarn, and the second yarn Y 2 as a thin yarn. There is a distance difference between the second yarn Y 2 and the outer surfaces of the clothing surface 1 and the skin-friendly surface 2 to form a breathable area. The first yarn Y 1 is in direct contact with the outside world by adhering to the outer surfaces of the clothing surface 1 and the skin-friendly surface 2, so that the contact distances of the first yarn Y 1 and the second yarn Y 2 with the outside world are different. Taking the skin-friendly surface as an example, since the diameter of the first yarn Y 1 is larger, it directly forms the surface of the skin-friendly surface 2, while since the diameter of the second yarn Y 2 is smaller, it is formed on the inner side, away from the area in contact with the skin, reducing the probability of contact with the skin. Thus, there is a spaced cavity area between the second yarn Y 2 and the outer surface of the skin-friendly surface, and this area is composed of micro-holes, effectively enhancing breathability.

[0031] On the fabric body, there are several unit repeating structures woven in an adjacent or alternating manner through the first yarn Y 1 and the second yarn Y 2 . The several unit repeating structures together form the fabric body. In one unit repeating structure, the length distribution ratio of any one yarn in the first yarn Y 1 or the second yarn Y 2 on the clothing surface and the skin-friendly surface is 1:1. The proportion of the first yarn Y 1, the position where the second yarn is located corresponds to the second yarn and the first yarn Y in the clothing surface 1 The position where it is located. So that the clothing surface and the skin-facing surface have the same basic structure, so that the skin-facing surface and the clothing surface of the fabric body have different moisture-conducting capabilities. As shown in the appendix Figure 1 As shown, in one embodiment, a unit repeat structure is defined to include a first yarn Y 1 and a second yarn Y 2 , the first yarn Y 1 , the second yarn Y 2 are respectively connected to the skin-facing surface and the clothing surface to form a unit repeat structure. The first yarn Y 1 is close to the outside, and the second yarn Y 2 is close to the inside, so that the second yarn Y 2 is far from the contact area with the skin-facing surface, and the first yarn Y 1 makes a larger area of contact with the skin.

[0032] The diameter D 1 of the first yarn Y 1 and the diameter D 2 of the second yarn Y 2 have a ratio ≥ 1.2, and the water-conducting ability LP 1 of the first yarn Y 1 and the water-conducting ability LP 2 of the second yarn Y 2 have a ratio ≤ 1.5. The contact angle θ 2 of the second yarn Y 2 ≤ the contact angle θ 1 of the first yarn Y 1 . In a preferred solution, the water-conducting ability of the first yarn Y 1 is less than that of the second yarn Y 2 , that is, the second yarn Y 2 is a fine yarn with a strong water-conducting ability, and the first yarn Y 1 is a thick yarn with a poor water-conducting ability. The strong, weak, thick yarn, and fine yarn mentioned here refer to the comparison between the first yarn Y 1 and the second yarn Y 2 .

[0033] In the unit repeat structure, it includes m first yarns Y 1 and n second yarns Y 2 , and m ≤ 4, n ≤ 5, and the first yarn Y 1 or the second yarn Y 2Any one of the yarns in the garment surface 1 and the skin-contacting surface 2 of the fabric body is distributed in a ratio of 1:1, and there is no structural difference between the garment surface and the skin-contacting surface, so as to achieve a differential moisture conduction capacity of ≥100% for liquid water to be transferred from the skin-contacting surface of the fabric body to the garment surface. In other words, the garment surface and the skin-contacting surface have the same structure, but the first yarn Y of the garment surface 1 The knitting position corresponds to the second yarn Y on the skin-contacting surface 2 The position of the weaving ensures that the garment side and the skin-contacting side have the same basic structure without any differentiation.

[0034] Since the first yarn Y 1 The second yarn Y is a coarse yarn with weak water conductivity, so the contact area with the skin is large and the probability of contact with the skin is high. 2 It is a fine yarn with strong water-conducting ability, which is relatively far away from the skin and has a low probability of contacting the skin. That is, when the fabric is not subjected to external force, the second yarn Y 2 is away from the skin and does not touch, and the first yarn Y 1 is close to the skin; when subjected to external force, the second yarn Y 2 The contact area with the skin will be increased. 1 A larger contact area with the second yarn Y 2 The smaller the contact area, the more moisture will be passed through the second yarn Y 2 Passing without gathering on the first yarn Y 1 and the first yarn Y 1 and the second yarn Y 2 Both serve as evaporation surfaces to evaporate moisture. The breathable area formed between the two yarns with different diameters reduces the sticky feeling after sweating and slows down the horizontal diffusion of moisture on the skin-contacting surface, which is beneficial to keep the skin-contacting surface dry and improve wearing comfort.

[0035] The first yarn Y 1 The first yarn Y is made of any one of polyester fiber, polyamide fiber and cellulose fiber or any combination of two or more thereof. 1 The surface contact angle θ 1 ≥40°, the polyester fiber may be polyester fiber having mechanical elasticity or other types of polyester fiber.

[0036] The second yarn Y 2 The second yarn Y is made of any one of polyester fiber, polyamide fiber, natural fiber, regenerated cellulose fiber and polyester fiber or a combination of two or more thereof. 2 The surface contact angle θ 2 ≤70°, the polyester fiber may be polyester fiber having mechanical elasticity or other types of polyester fibers.

[0037] The fabric body further includes spandex elastic fibers, which are woven into the clothing side or the skin-friendly side of the fabric body, or are woven into both the clothing side and the skin-friendly side simultaneously.

[0038] The content of spandex elastic fibers in the fabric body is greater than 5%, so as to improve the elasticity and quality sense of the fabric. When it is less than 5%, it is difficult to achieve effective elastic quality. Therefore, setting the content greater than 5% here is a relatively optimized value.

[0039] The clothing side and the skin-friendly side of the fabric can be flocked. The skin-friendly side and the clothing side of the fabric can be flocked to form a warm-keeping layer, thereby increasing the overall thickness of the fabric to facilitate the differential transfer of liquid water.

[0040] For the specific weaving: yarn → gray cloth weaving → high-temperature pre-setting → overflow dyeing → setting. The skin-friendly side is flocked to increase warmth retention. It is comfortable and soft to wear, while being light and without a sense of oppression. In addition, the skin-friendly side is flocked to form a warm-keeping layer, reducing the probability of the yarn contacting the skin, increasing the overall thickness of the fabric to facilitate the differential transfer of liquid water, and improving the soft comfort of the hand feeling.

[0041] The following will be described with specific examples.

[0042] Example 1:

[0043] The first yarn Y 1 Uses mechanical elastic polyester 75D / 48F, and the second yarn Y 2 Uses polyester 40D / 72F. Among them, the diameter D 1 of the first yarn Y 1 and the diameter D 2 of the second yarn Y 2 have a ratio ≥ 1.2, and the water conduction ability LP 1 of the first yarn Y 1 and the water conduction ability LP 2 of the second yarn Y 2 have a ratio < 1.5; the two yarns are intertwined with each other to form a double-sided fabric with a clothing side 1 and a skin-friendly side 2. m pieces of the first yarn Y 1 and n pieces of the second yarn Y 2 are arranged and woven in an adjacent or alternating manner to form a single unit repeat of the fabric body. In Example 1, m = 1 and n = 1; and any one of the first yarn Y 1 or the second yarn Y 2 has a distribution ratio of 1:1 on the clothing side 1 and the skin-friendly side 2 of the fabric body.

[0044] In this example, a plane formed by the yarn is created by tightly winding the yarn around a microscope slide for detection. Then, water is dropped onto this plane using a contact angle measuring instrument, and the contact angle θ is measured. For the first yarn Y 1 (model: circular PES 75D / 48F), the contact angle θ 1 is 63°. For the second yarn Y 2 (model: circular PES 40D / 72F), the contact angle θ 2 is 60°. The density of polyester is 1,360,000 g / m 3 .

[0045] The capillary equivalent radius table for different fiber cross-sections is as follows:

[0046] Fiber cross-section Capillary equivalent radius prediction model Circular 0.227R Triangular 0.634R H-shaped 0.431R Y-shaped 0.237R Cross-shaped 0.471R

[0047] For a yarn composed of multiple filaments (fibers), there are two mechanisms for capillary formation in a single yarn. One is that the distance between fibers is close enough to form capillaries. Just like when multiple thin cylinders are inserted into water closely together, capillaries may form between their surfaces; the other mechanism is that capillaries are formed due to grooves on a single fiber. Thus, the estimation formula for the number of capillaries in a single yarn is given as:

[0048]

[0049] Where:

[0050] n: The number of capillaries in a single yarn.

[0051] C: This data is an empirical parameter, representing the probability that grooves in fibers with heterogeneous cross-sections can form effective capillary channels. This parameter is mainly related to various factors affecting the ideal fiber shape during fiber and spinning processes, as well as the mutual position and tightness between fibers. According to practical experience, usually, if the cross-sectional shape of the yarn is clear, regular, and uniform, the possibility of forming capillary channels is high; for twisted yarns, the mutual distance between fibers will decrease and capillary effects are likely to form. The value range of the effective capillary coefficient of fibers in the yarn is 0.95 ≥ C ≥ 0.35, and the typical parameter C = 0.8. In cases where it cannot be determined, 0.8 can also be directly taken for approximate calculation, indicating that about 80% of the grooves can form capillary channels.

[0052] X: The number of grooves on the filament (fiber). For typical fibers, such as circular X = 0; triangular X = 0; Y-shaped X = 3; H-shaped X = 2; W-shaped X = 3; cross-shaped X = 4; C-shaped X = 1.

[0053] F: The number of filaments (fibers) in the yarn.

[0054] The total number of capillaries in this embodiment is calculated as follows. For the first yarn Y1 (75D / 48F) The equivalent radius of polyester monofilament is:

[0055]

[0056] D Y1 = 2×6.38 = 12.76 (μm)

[0057] The equivalent radius r of the capillary Y1 = 0.227R Y1 = 1.45 (μm)

[0058] It is convenient to calculate the total amount of capillaries of circular 75D / 48F polyester single yarn

[0059]

[0060] Similarly, we calculate the second yarn Y 2 (40D / 72F) The equivalent radius of polyester monofilament is:

[0061]

[0062] D Y2 = 2×3.80 = 7.6 (μm)

[0063] The equivalent radius r of the capillary Y2 = 0.227R Y2 = 0.86 (μm)

[0064] It is convenient to calculate the total amount of capillaries of circular 40D / 72F polyester single yarn

[0065]

[0066] It is known that the first yarn Y 1 The contact angle θ of polyester is 63°, cos(63) = 0.45; the second yarn Y 2 The contact angle θ of polyester is 60°, cos(60) = 0.5

[0067] According to the fabric structure, Y 1 and Y 2 Simultaneously participate in the knitting of the fabric surface and the skin-friendly surface. Thus, the ratio of the water conduction ability of the two sides of the fabric can be calculated:

[0068]

[0069] In this example, the knitted fabric was measured according to the standard AATCC 195 "Liquid Moisture Management Properties of Textile Fabrics". The one-way moisture transport capacity OWTC (one way transport capability) of the fabric body measured this time was 217%.

[0070] Comparative Example 1:

[0071] The first yarn Y 1 and the second yarn Y 2 Both are made of mechanical elastic polyester (75D / 48F) and interwoven with each other to form a weft-knitted double-sided fabric, and the contact angle is 58°. The above-mentioned knitted fabric was measured according to the standard AATCC 195 "Liquid Moisture Management Properties of Textile Fabrics". The one-way moisture transport capacity OWTC (one way transport capability) of this fabric was measured to be 92%.

[0072] Comparing the two, it can be seen that in this application, through the modification of the fabric structure and yarn count, the fabric is light, thin, and soft, and the one-way moisture transport capacity of the fabric is greatly improved, and the skin-friendly surface of the fabric body can be kept dry and comfortable for a long time.

[0073] Example 2:

[0074] On the basis of Example 1, the materials were converted to weave a double-sided structure of polyester and nylon knitted fabric.

[0075] Ordinary circular polyester 75D / 36F was used as the first yarn Y 1 and nylon 66 (50D / 48F) as the second yarn Y 2 . These two yarns were interwoven with each other to form the fabric body, and a flocking treatment was carried out. M pieces of the first yarn Y 1 and n pieces of the second yarn Y 2 were arranged in an adjacent or alternating manner to weave a single unit repeat structure of the fabric body. In Example 1, m = 1, n = 1; and any one of the first yarn Y 1 or the second yarn Y 2 was distributed in a ratio of 1:1 on the clothing surface 1 and the skin-friendly surface 2 of the fabric body.

[0076] In this embodiment, the polyester density known in the industry is 1360000 g / m 3 , and the nylon density is 1150000 g / m 3 . The first yarn Y1 (75D / 36F) The equivalent radius of polyester monofilament is:

[0077]

[0078] D Y1 = 2 × 7.36 = 14.72 (μm)

[0079] The equivalent radius r of the capillary Y1 = 0.227R Y1 = 1.67 (μm)

[0080] It is convenient to calculate the total amount of capillaries of circular 75D / 36F polyester single yarn

[0081]

[0082] Similarly, we calculate the second yarn Y 2 (50D / 48F) The equivalent radius of nylon 66 monofilament is:

[0083]

[0084] D Y2 = 2 × 5.48 = 10.96 (μm)

[0085] The equivalent radius r of the capillary Y1 = 0.227R Y1 = 1.24 (μm)

[0086] It is convenient to calculate the total amount of capillaries of circular 50D / 48F nylon 66 single yarn

[0087]

[0088] It is known that for the first yarn Y 1 The contact angle θ of polyester 1 The angle is 68°, cos(68) = 0.37; for the second yarn Y 2 The contact angle θ of polyester 2 The angle is 60°, cos(60) = 0.5.

[0089] According to the fabric structure, Y 1 and Y 2 Simultaneously participate in the weaving of the clothing side 1 and the skin-friendly side 2, from which the ratio of the water conduction ability of the two sides of the fabric can be calculated:

[0090]

[0091] The knitted fabric was measured according to the standard AATCC 195 "Liquid Moisture Management Properties of Textile Fabrics". The one-way moisture transport capacity OWTC (one way transport capability) of the fabric body measured this time is 203%.

[0092] Comparative Example 2:

[0093] The first yarn Y 1 and the second yarn Y 2 both use circular polyester (75D / 36F) to interweave with each other to form a weft-knitted double-sided fabric, and the contact angle is 62°. The above-mentioned knitted fabric was measured according to the standard AATCC 195 "Liquid Moisture Management Properties of Textile Fabrics". The one-way moisture transport capacity OWTC (one way transport capability) of this fabric was measured to be 94%.

[0094] By comparing the two, it can be seen that in this application, through the modification of the fabric structure and yarn count, and adding raising treatment, the fabric is light, thin and soft, and greatly improves the one-way moisture transport capacity of the fabric, and can keep the skin-friendly surface of the fabric body dry and comfortable for a long time.

[0095] Example 3:

[0096] On the basis of Example 1, the first yarn Y 1 : ordinary circular polyester 75D / 36F and the second yarn Y 2 : cross-section nylon yarn 70D / 68F, these two yarns are interwoven with each other to make the fabric body, and form a weft-knitted double-sided fabric.

[0097] The first yarn Y 1 (75D / 36F) The equivalent radius of the polyester monofilament is:

[0098]

[0099] D Y1 = 2 × 7.36 = 14.72 (μm)

[0100] The equivalent capillary radius r Y1 = 0.227R Y1 = 1.67 (μm)

[0101] The total capillary amount of the circular 75D / 36F polyester single yarn can be easily calculated

[0102]

[0103] Similarly, we calculate the second yarn Y 2 (70D / 68F) The equivalent radius of the cross-sectional nylon monofilament is:

[0104]

[0105] D Y2 = 2×5.48 = 10.96 (μm)

[0106] The equivalent radius r of the capillary Y2 = 0.471R Y2 = 2.58μm)

[0107] It is convenient to calculate the total amount of capillaries of the 70D / 68F nylon single yarn with a cross-section

[0108]

[0109] Given the first yarn Y 1 The contact angle θ of polyester 1 The angle is 61°, cos(61) = 0.48; the second yarn Y 2 The contact angle θ of polyester 2 The angle is 60°, cos(60) = 0.50.

[0110] According to the fabric structure, Y 1 and Y 2 Simultaneously participate in the knitting of the clothing surface 1 and the skin-friendly surface 2, and thus the ratio of the water-conducting capabilities of the two sides of the fabric can be calculated:

[0111]

[0112] The knitted fabric was measured according to the standard AATCC 195 "Liquid Moisture Management Properties of Textile Fabrics". The one-way moisture transport capability OWTC (one way transport capability) of the fabric body measured this time is 280%.

[0113] Comparative Example 3:

[0114] Using the same yarn count and structure as Comparative Example 1, according to the comparison of the test results, it can be seen that through the modification of the fabric structure and yarn count in this application, the fabric is light, thin, soft, and the one-way moisture transport capability of the fabric is greatly improved.

[0115] From the above examples, we can obtain that by using the interweaving of roving and yarn, the yarn does not touch the skin, significantly enhancing the difference in capillary water conduction ability between the two surfaces of the fabric, so as to achieve the purpose of "keeping the human skin surface always dry and comfortable". At the same time, this application has the characteristics of being light, thin, soft and having differential moisture conduction ability. This knitted fabric can meet people's needs for wearing comfort, functionality and practicality, and has a wide range of applications.

[0116] In addition, it should be understood that although this specification is described according to embodiments, not every embodiment only contains an independent technical solution. This narrative way of the specification is only for clarity. Those skilled in the art should regard the specification as a whole, and the technical solutions in each embodiment can also be appropriately combined to form other embodiments that can be understood by those skilled in the art. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present invention shall be included within the protection scope of the present invention.

Claims

1. A moisture-conducting fabric with a differential double-sided basic structure, comprising a fabric body, characterized in that, the fabric body is a weft knitted fabric formed by the interweaving of a first yarn and a second yarn, having a clothing side and a skin-contact side. Both the first yarn and the second yarn include at least one yarn. The ratio of the diameter of the first yarn to the diameter of the second yarn ≥ 1.2, and the ratio of the water-conducting ability of the first yarn to the water-conducting ability of the second yarn ≤ 1.

5. The contact angle of the second yarn ≤ the contact angle of the first yarn. There is a distance difference between the second yarn and the outer surfaces of the clothing side and the skin-contact side to form a breathable area. The first yarn is in direct contact with the outside by adhering to the outer surfaces of the clothing side and the skin-contact side, such that the contact distances of the first yarn and the second yarn with the outside are different. The fabric body is woven from m first yarns and n second yarns arranged adjacent to or alternating with each other to form a single unit repeating structure. m ≤ 4, n ≤ 5. The fabric body is composed of several unit repeating structures. In a single unit repeating structure, the length distribution ratio of any one of the first yarns or the second yarns on the clothing side and the skin-contact side is 1:1, such that the clothing side and the skin-contact side have the same basic structure. The fabric body is measured according to standard AATCC 195, and the one-way moisture-conducting ability of the fabric body ≥ 100%. The clothing side and / or the skin-contact side of the fabric body is a smooth surface or is subjected to flocking treatment to form a fluffy surface; The water conduction ability of the first yarn and the water conduction ability of the second yarn The ratio is calculated by the following formula: ， A1 and B1 in the formula refer to the outer surface and the skin-contact surface of the fabric here. That is, if A1 corresponds to the outer surface of the clothing, then B1 corresponds to the skin-contact surface. Then refers to the number of single yarn filaments of yarn Y in the skin-contact surface 1 and refers to the number of single yarn filaments of yarn Y in the outer surface of the clothing 2 and refers to the number of filament grooves of yarn Y in the skin-contact surface 1 and refers to the number of filament grooves of yarn Y in the outer surface of the clothing 2 and refers to the equivalent capillary radius of yarn Y in the skin-contact surface 1 and refers to the equivalent capillary radius of yarn Y in the outer surface of the clothing 2 and refers to the effective capillary coefficient of the fiber in yarn Y1 in the skin-contact surface and refers to the contact angle of yarn Y1 in the skin-contact surface and refers to the contact angle of yarn Y2 in the outer surface of the clothing 2. The moisture-conducting fabric with a differential double-sided basic structure according to claim 1, characterized in that, the positions of the first yarn and the second yarn on the skin-contact side correspond to the positions of the second yarn and the first yarn on the clothing side.

3. The moisture-conducting fabric with a differential double-sided basic structure according to claim 2, characterized in that, the fabric body is woven from m first yarns and n second yarns arranged adjacent to or alternating with each other to form a single unit repeating structure, and m ≤ 2, n ≤ 3.

4. The moisture-conducting fabric with a differential double-sided basic structure according to claim 3, characterized in that, the first yarn is made of any one or any combination of two or more of polyester fibers, polyamide fibers, and cellulose fibers, and the surface contact angle of the first yarn ≥ 40°.

5. The moisture-conducting fabric with a differential double-sided basic structure according to claim 4, characterized in that, the second yarn is made of any one or any combination of two or more of polyamide fibers, natural fibers, regenerated cellulose fibers, and polyester fibers, and the surface contact angle of the second yarn ≤ 70°.

6. The moisture-conducting fabric with a differential double-sided basic structure according to claim 5, characterized in that, the fabric body further includes spandex elastic fibers, and the spandex elastic fibers are woven on the clothing side and / or the skin-contact side of the fabric body.

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