Preparation method of concave-convex double-sided connecting point one-way moisture-conducting fabric

Abstract

The present application relates to a kind of preparation methods of concave-convex double-sided connection point one-way wet guide fabric, and it is formed by selecting the difference of larger polyester filament A yarn and B yarn in single fiber linear density and weaving on double-sided circular weft machine.The back of fabric is all A yarn, and the front of fabric contains A and B yarn.The loop size of fabric front and back is uniform after shrinking to different degrees after weaving, and the fabric surface is flat, which is used as skin surface;The front of fabric presents concave-convex structure.The weaving method of the present application is simple, and by adjusting the ratio of loop height of fabric front and back and the number of loop spacing, the fabric woven has the function of micro-groove with air-permeable and moisture-permeable performance and short convex strip with wet guide and moisture dispersion performance, so that the fabric has good one-way wet guide function while ensuring its air-permeable and moisture-permeable performance.

Description

Technical Field

[0001] This invention belongs to the field of textile design technology, specifically relating to a method for preparing a unidirectional moisture-wicking fabric with concave and convex double-sided connection points. Background Technology

[0002] Currently, fabrics and garments with one-way moisture-wicking function are emerging in the market and are widely welcomed by consumers. One-way moisture-wicking fabrics can spontaneously conduct moisture or sweat from the inner layer (close to the skin) to the outer layer (the layer in contact with the external environment) and diffuse and evaporate on the outer layer, while moisture on the outer layer is difficult to seep back into the inner layer, thus keeping the inner layer relatively dry and effectively regulating the thermal and moisture balance of the microclimate between the human skin and clothing. The one-way moisture-wicking function is mainly achieved through two methods: fabric structure design based on fiber modification and functional finishing. For example, patent CN115162028A discloses a 3D directional moisture-wicking multifunctional knitted fabric and its preparation method. The prepared fabric, from the inside out, includes a partially water-repellent printed layer, a cooling silicone oil finishing layer, a fabric base, a hydrophilic quick-drying printed layer, and a cooling silicone oil finishing layer. This solves the problem of one-way moisture-wicking fabrics being unable to wick away large amounts of sweat when saturated, improves evaporation efficiency, achieves the fabric's quick-drying function, and at the same time, the fabric has a silky feel and an instant and lasting cooling effect, greatly improving the fabric quality and the comfort of the garment. Patent CN217415158U discloses a one-way moisture-wicking, quick-drying biomimetic woven fabric, comprising a moisture-wicking and quick-drying layer and a waterproof layer. The surface layer is a moisture-wicking and quick-drying layer, formed by a dense plain weave of first warp and first weft yarns interwoven with hollow O-type yarns and Y-type absorbent yarns. The bottom layer is a waterproof layer, woven with a grooved structure of second warp yarns interwoven with hollow insulating O-type yarns and Y-type absorbent yarns and waterproof second weft yarns with a lotus leaf-like plush effect. Through the wicking effect of the plain weave, moisture or sweat is quickly transferred from the waterproof layer to the moisture-wicking and quick-drying layer, keeping the skin dry at all times. The design of these functional fabrics often requires the use of functional additives, and the durability of the effect is affected by the number of washes; or they use a multi-layer special structural design to achieve the one-way moisture-wicking function, resulting in multiple layers, greater thickness, and insufficient elasticity, which restricts the wearer's movement and is usually not suitable for use as a skin-hugging layer or sportswear. Therefore, using double-knitted fabrics will be more conducive to achieving one-way moisture wicking function from the perspective of structural design. The fabric is softer, more breathable, more elastic, and more comfortable to wear. It is an ideal fabric for improving the stuffy, sticky, and uncomfortable feeling of clothing. Summary of the Invention

[0003] The present invention aims to solve the problems of cumbersome process steps in the above-mentioned one-way moisture-wicking fabric, the need for chemical additives to achieve the one-way moisture-wicking function, and the poor moisture-wicking effect. It provides a method for preparing one-way moisture-wicking fabric with concave and convex double-sided connection points.

[0004] One technical solution adopted in this invention is: a method for preparing a unidirectional moisture-wicking fabric with concave-convex double-sided connection points. The fabric is made from two yarns, A and B, with a large difference in single-fiber linear density, woven on a double-sided circular knitting machine. The upper needle plate knits the reverse side of the fabric, and the lower needle cylinder knits the right side. The reverse side of the fabric has a plain weave structure, and the right side has a textured surface. The minimum repeat pattern width of the fabric is 4m and the pattern height is 12m, where m is the number of stitches between the A yarn loops and the B yarn loops on the right side of the fabric within a unit repeat (m=1, 2, 3...). Specific weaving method: The first + 3n (n = 0, 1, 2, ..., 1 + 3n < 12m) path uses yarn A, and the (12m - 3n - 1) path uses yarn B; there are a total of 4m paths using yarn A, where the yarn is woven into loops and interlaced with floats every m loops on both the needle plate and the needle cylinder; there are a total of 8m paths using yarn B, where the yarn does not participate in weaving on the needle plate, but is woven into loops and interlaced with floats every m loops on the needle cylinder. The short loops woven with yarn B are compressed on the front side of the fabric to form short strip-shaped protrusions, and the loops woven with yarn A are stretched on the front side of the fabric due to the shrinkage of yarn B, forming grooves with larger pores. The fabric surface forms an orderly concave-convex structure, and the reverse side of the fabric is connected to the front side by loops of yarn A. The number of loop connection points within a unit weave cycle is 8m, and the connection points are evenly distributed on the front side of the fabric.

[0005] Furthermore, the linear density of yarn A is greater than that of yarn B.

[0006] Furthermore, yarn A is made of polyester filament with a fineness of 40D-100D and an F number of 12F-48F, and yarn B is made of polyester filament with a fineness of 50D-150D and an F number of 144F-576F.

[0007] Furthermore, the loops woven by the A yarn on the needle plate and the needle cylinder are respectively denoted as A yarn loop A1 on the front side of the fabric and A yarn loop A2 on the back side of the fabric. The B yarn is only woven into loops on the needle cylinder and is denoted as B yarn loop B1 on the front side of the fabric. Then, the height order of A yarn loop A1 on the front side of the fabric, A yarn loop A2 on the back side of the fabric and B yarn loop B1 on the front side of the fabric is B1 < A1 ≤ A2.

[0008] Furthermore, the fabric has a weight of 90-230 g / m². 2 .

[0009] In this invention, a high-gauge circular knitting machine is used for weaving, which increases both the warp and weft density of the fabric compared to ordinary circular knitting machine fabrics. At the same time, it increases the number of single fibers per unit length. The number of single fibers determines the number of gaps between fibers. The increase in the number of single fibers increases the number of gaps, thereby improving the capillary effect.

[0010] When weaving fabric, the needle cylinder has four heel positions when the smallest weave cycle is arranged. These can be arranged in a "step-low" manner, namely heel A, heel B, heel C, and heel D. When using cotton-wool needle pairing, the needle plate needles are high heel needle a and low heel needle b arranged alternately. When using rib needle pairing, the needle plate needles are c and d heel needles arranged alternately.

[0011] The advantages of this invention are as follows: (1) The reverse side of the fabric of the present invention contains only A yarn weaving, with uniform loop size and a flat plain weave. The front side of the fabric contains A and B yarn weaving. The A yarn and B yarn have different thicknesses and different loop sizes. After finishing without external tension, the loop shrinkage on the reverse side is more severe than that on the front side. The short loops of B yarn on the front side of the fabric are squeezed and form short strip-shaped protrusions on the fabric surface. The loops of A yarn on the front side of the fabric are stretched due to the shrinkage of B yarn, forming grooves with larger pores. The fabric surface forms an orderly concave-convex structure appearance. The fabric in the grooved part is thin and the loop pores are larger, which enhances the overall breathability and moisture permeability of the fabric, helps the exchange and dissipation of hot and humid gases, and can maintain a suitable temperature and humidity of the human body-skin microenvironment. The raised strip structure on the fabric can form a small air layer, which enhances the absorption capacity of moisture and expands the evaporation area on the front side of the fabric, so that the fabric can achieve a quick-drying effect.

[0012] (2) In the fabric preparation process of the present invention, two yarns with different single fiber densities are selected to weave the coils of different sizes. The front and back sides of the fabric are connected by yarn coils to form a connection point with a certain structure. The coils of different heights and the connection points together form the moisture-wicking channel of the fabric.

[0013] (3) The fabric weaving method of the present invention is simple, does not require the use of chemical auxiliaries, has a long-lasting one-way moisture-wicking effect, and is applicable to a wider range of scenarios. Attached Figure Description

[0014] Figure 1 This is a design drawing of the front and back patterns of the fabric woven in Example 1.

[0015] Figure 2 This is a schematic diagram of the triangular configuration and needle arrangement of the fabric woven in Example 1. In this diagram, c and b are needles with two different needle heels on the needle plate, and A, B, C, and D are needles with four different needle heels on the needle cylinder.

[0016] Figure 3 is a schematic diagram of the loops in the woven fabric of Embodiment 1, wherein... Figure 3a This is the front side of the coil. Figure 3b The reverse side of the coil, Figure 3c This is the side of the coil.

[0017] Figure 4 This is a diagram showing the needle setting method of the circular knitting machine for fabric weaving in Embodiment 1.

[0018] Figure 5 This is a design drawing of the front and back patterns of the fabric woven in Example 2.

[0019] Figure 6 This is a schematic diagram of the triangular configuration and needle arrangement of the fabric woven in Example 2. In this diagram, a is the high-heel needle of the needle plate, b is the low-heel needle of the needle plate, and A, B, C, and D are the four different heels of the needle cylinder.

[0020] Figure 7 is a schematic diagram of the loops in the woven fabric of Example 2, wherein... Figure 7a This is the front side of the coil. Figure 7b The reverse side of the coil, Figure 7c This is the side of the coil.

[0021] Figure 8 This is a diagram showing the needle setting method of the circular knitting machine for fabric described in Embodiment 2.

[0022] Figure 9 This is a schematic diagram of the functional partition structure in the smallest organizational cycle unit. Detailed Implementation

[0023] To make the above-mentioned objects, features and advantages of the present invention more apparent and understandable, the present invention will be further described below in conjunction with specific embodiments.

[0024] In this invention, a double-sided circular knitting machine is used, which is a high-numbered double-sided rib knitting machine with loops and floating line variations in the range of E28-E40, or a double-sided cotton / wool knitting machine or a double-sided rib / cotton / wool interchangeable machine, and a 2+4 or higher runway is selected.

[0025] Yarn A and yarn B include, but are not limited to, polyester filament. Yarn A or (and) yarn B can be replaced with other chemical fiber filaments, such as polypropylene, provided that the fabric has a one-way moisture-wicking function. Short fiber yarns can also be added and woven together with yarn A or (and) yarn B, such as cotton yarn or wool yarn. Alternatively, blended yarns can be used to replace yarn A or yarn B, such as polyester-cotton blended yarn. Example 1:

[0026] A method for preparing a unidirectional moisture-wicking fabric with concave-convex double-sided connection points: Yarn A is the inner yarn made of 50D / 24F polyester filament, and yarn B is the outer yarn made of 50D / 216F polyester filament. The fabric is woven on a high-speed double-sided circular knitting machine (size E32) using a double-sided composite weft weaving process. The schematic diagram of the double-sided composite weaving process is shown below. Figure 1 As shown, the triangle configuration diagram and pin header diagram are as follows: Figure 2 As shown in Figure 3, the coil is as shown in Figure 4. The needle setting method of the circular knitting machine is as follows: Figure 4 As shown.

[0027] like Figure 1As shown, in this embodiment, the minimum weave repeat of the fabric has a pattern width of 4 and a pattern height of 12. Yarns A are threaded in rows 1, 4, 7, and 10, while yarns B are threaded in rows 2, 3, 5, 6, 8, 9, 11, and 12. The cylinder needles of the double-sided circular knitting machine are, in sequence, heel needles A, B, C, and D, while the dial needles are heel needles c and d arranged at intervals. Figure 2 As shown; the needle setting method of the circular knitting machine adopts Figure 4 The needles are arranged in a ribbed pattern. Specifically, in the first row, polyester filament A does not loop on the c-heel needle of the needle plate, loops on the d-heel needle, loops on the A-heel needle and C-heel needle of the syringe, and does not loop on the B-heel needle and D-heel needle; in the fourth row, polyester filament A loops on the c-heel needle of the needle plate, does not loop on the d-heel needle, loops on the A-heel needle and C-heel needle of the syringe, and does not loop on the B-heel needle and D-heel needle; in the seventh row, polyester filament A does not loop on the c-heel needle of the needle plate, loops on the d-heel needle, does not loop on the A-heel needle and C-heel needle of the syringe, and loops on the B-heel needle and D-heel needle; in the tenth row, polyester filament A loops on the c-heel needle of the needle plate, does not loop on the d-heel needle, loops on the A-heel needle and C-heel needle of the syringe, and does not loop on the B-heel needle and D-heel needle. In lines 2, 3, 5, and 6, polyester filament B does not form loops on the c and d heel needles of the needle disc, does not form loops on the A and C heel needles of the syringe, but forms loops on the B and D heel needles; in lines 8, 9, 11, and 12, polyester filament B does not form loops on the c and d heel needles of the needle disc, forms loops on the A and C heel needles of the syringe, but does not form loops on the B and D heel needles.

[0028] At this point, polyester filament A is woven into loops A1 and A2 on the front and back sides of the fabric, respectively, while polyester filament B is woven into loop B1 on the front side. The height ratio of the three loops is B1:A1:A2 = 1:2:4. After finishing, the loops on the back side are uniform in size and the fabric surface is flat. Because the shrinkage of the loops on the back side is more severe than that on the front side, loop B1 woven from yarn B is compressed and forms short, raised strips on the fabric surface. Loop A1 woven from yarn A is stretched due to the shrinkage of yarn B, forming larger, concave pores. The fabric surface exhibits an uneven structure. The larger pores in the concave parts of the front side facilitate breathability and moisture permeability, while the short, raised strips create a micro-air layer in the fabric, enhancing its moisture absorption capacity and increasing the actual evaporation area of ​​the fabric surface, resulting in faster evaporation. Figure 9 As shown. Polyester filament A has a loose structure, high linear density, and large capillary pores between fibers. The woven fabric has a completely hydrophobic reverse side, forming a good insulating layer structure to keep the skin dry. Polyester filament B has good wetting and diffusion properties, a compact structure, lower single-fiber linear density, and smaller capillary pores between fibers. The difference in single-fiber linear density between polyester filaments A and B is a factor of 9. When combined, they can form a highly efficient differential capillary effect, thereby quickly wicking away sweat.

[0029] Meanwhile, the fabric weight is 95g / m². 2 The ratio of A yarn to B yarn is 45%:55%, resulting in a relatively lightweight fabric with good elasticity. This fabric can absorb sweat or moisture from the skin surface and conduct it to the front of the fabric, reducing sweat accumulation, keeping the skin dry and preventing backflow. It can be used in summer sportswear and has a wide range of applications. Example 2:

[0030] A method for preparing a unidirectional moisture-wicking fabric with concave-convex double-sided connection points, wherein yarn A is the inner yarn made of 50D / 24F polyester filament, and yarn B is the outer yarn made of 50D / 216F polyester filament, and the fabric is woven on a high-speed double-sided circular knitting machine of size E32 using a double-sided composite structure weaving process. Figure 5 As shown, in this embodiment, the minimum weave repeat of the fabric has a pattern width of 4 and a pattern height of 12. Yarn A is used in patterns 1, 4, 7, and 10, while yarn B is used in patterns 2, 3, 5, 6, 8, 9, 11, and 12. The cylinder needles of the double-sided circular knitting machine are, in sequence, heel needles A, B, C, and D. The dial needles are high heel needles (a) and low heel needles (b) spaced apart sequentially. Figure 6 As shown; the needle setting method of the circular knitting machine adopts Figure 8 The cotton wool is used for needle pegs. Specifically, in rows 1 and 4, polyester filament A does not form loops on the high heel needle a of the needle plate, forms loops on the low heel needle b, forms loops on the A and C heel needles of the syringe, and does not form loops on the B and D heel needles; in rows 7 and 10, polyester filament A forms loops on the high heel needle a of the needle plate, does not form loops on the low heel needle b, does not form loops on the A and C heel needles of the syringe, and forms loops on the B and D heel needles. In lines 2, 3, 5, and 6, polyester filament B does not form loops on the high heel needle a and low heel needle b of the needle disc, does not form loops on the A and C heel needles of the syringe, but forms loops on the B and D heel needles; in lines 8, 9, 11, and 12, polyester filament B does not form loops on the high heel needle a and low heel needle b of the needle disc, forms loops on the A and C heel needles of the syringe, but does not form loops on the B and D heel needles.

[0031] At this point, polyester filament A is woven into loops A1 and A2 on the front and back sides of the fabric, respectively, while polyester filament B is woven into loop B1 on the front side. The height ratio of the three loops is B1:A1:A2 = 1:2:2. After finishing, the loops on the back side are uniform in size and the fabric surface is flat. Because the shrinkage of the loops on the back side is more severe than that on the front side, loop B1 woven from yarn B is compressed and forms short, raised strips on the fabric surface. Loop A1 woven from yarn A is stretched due to the shrinkage of yarn B, forming larger, concave pores. The fabric surface exhibits an uneven structure. The larger pores in the concave parts of the front side facilitate breathability and moisture permeability, while the short, raised strips create a micro-air layer in the fabric, enhancing its moisture absorption capacity and increasing the actual evaporation area of ​​the fabric surface, resulting in faster evaporation. Figure 9As shown. Polyester filament A has a loose structure, high linear density, and large capillary pores between fibers. The woven fabric has a completely hydrophobic reverse side, forming a good insulating layer structure to keep the skin dry. Polyester filament B has good wetting and diffusion properties, a compact structure, lower single-fiber linear density, and smaller capillary pores between fibers. The difference in single-fiber linear density between polyester filaments A and B is a factor of 9. When combined, they can form a highly efficient differential capillary effect, thereby quickly wicking away sweat.

[0032] Meanwhile, the fabric has a weight of 109 g / m². 2 The ratio of A yarn to B yarn is 45%:55%, resulting in a lightweight and thin fabric with good elasticity. This fabric can quickly absorb sweat or moisture from the skin surface and conduct it to the front of the fabric, reducing sweat accumulation, keeping the skin dry and preventing backflow. It can be used in summer sportswear and has a wide range of applications.

[0033] The design of the fabric loop height in this invention is as follows: the ratio of the loop height between loop A2 of yarn A on the reverse side of the fabric and loop A1 of yarn A on the front side of the fabric is denoted as M, where M = 1, 2, ...; the ratio of the loop height between loop A1 of yarn A on the front side of the fabric and loop B1 of yarn B on the front side of the fabric is denoted as N, where N = 1, 2, 3, .... In this invention, the height ratio of the three loops is set as B1:A1:A2 = 1:2:4 or 1:2:2. By improving the yarn or weaving equipment, the values ​​of M and N can be changed to expand or shrink the loop height ratio, creating a varied weave. This loop structure design allows the side of the fabric closest to the skin on the reverse side to have better moisture absorption, while the loops on the front side allow moisture to be quickly transferred to the outside through the moisture-wicking channels in the fabric, while preventing moisture from the outside air from passing through.

Claims

1. A method for preparing a unidirectional moisture-wicking fabric with concave-convex double-sided connection points, characterized in that: The fabric is made from two yarns, A and B, with a large difference in single-fiber linear density, woven on a double-sided circular knitting machine. The upper needle plate knits the reverse side of the fabric, and the lower needle cylinder knits the right side. The reverse side of the fabric has a plain weave structure, and the right side has a textured surface. The minimum repeat pattern width of the fabric is 4m and the pattern height is 12m, where m is the number of stitches between the A yarn loops and the B yarn loops on the right side of the fabric within a unit repeat (m=1, 2, 3...). Specific weaving method: The first + 3n (n = 0, 1, 2, ..., 1 + 3n < 12m) path uses yarn A, and the second (12m - 3n - 1) path uses yarn B; the total number of paths using yarn A is 4m, and the yarn is woven in loops and interlaced with floats every m loops on both the needle plate and the needle cylinder; the total number of paths using yarn B is 8m, and the yarn does not participate in weaving on the needle plate, but is woven in loops and interlaced with floats every m loops on the needle cylinder. The short loops woven with yarn B are compressed on the front side of the fabric to form short strip-shaped protrusions, and the loops woven with yarn A are stretched on the front side of the fabric due to the shrinkage of yarn B, forming grooves with larger pores. The fabric surface forms an orderly concave-convex structure, and the reverse side of the fabric is connected to the front side by loops of yarn A. The number of loop connection points in a unit weave cycle is 8m, and the connection points are evenly distributed on the front side of the fabric; The linear density of yarn A is greater than that of yarn B, and the difference in the linear density ratio of yarn A to yarn B is 6-13 times. Yarn A uses polyester filament with a fineness of 40D-100D and an F number of 12F-48F, while yarn B uses polyester filament with a fineness of 50D-150D and an F number of 144F-576F. The loops woven by yarn A on the needle plate and needle cylinder are respectively denoted as yarn A loop A1 on the front side of the fabric and yarn A loop A2 on the back side of the fabric. Yarn B is only woven on the needle cylinder and is denoted as yarn B loop B1 on the front side of the fabric. The height order of yarn A loop A1 on the front side of the fabric, yarn A loop A2 on the back side of the fabric, and yarn B loop B1 on the front side of the fabric is B1 < A1 ≤ A2.

2. The method for preparing the unidirectional moisture-wicking fabric with concave-convex double-sided connection points according to claim 1, characterized in that: The fabric has a weight of 90-230 g / m². 2 .

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