Three-dimensional concave-convex multilayer monofilament and multifilament through hole jacquard fabric, vamp and preparation method

Abstract

The invention discloses a three-dimensional concave-convex multi-layer monofilament and multifilament through hole jacquard fabric, a vamp and a preparation method, and belongs to the field of textile knitting, the fabric comprises a convex part, a concave part and a plane part, the convex part forms an air layer sandwich structure by middle layer yarn, surface layer yarn and bottom layer yarn in an up-down tuck knitting mode, and the concave part forms an air layer sandwich structure; the surface layer is provided with a convex part and a concave part, the concave part pulls down the surface layer by bottom layer yarns in a needle separation tucking manner to form a concave area, the plane part forms a flat surface by surface layer yarns, the preparation method comprises the steps of yarn preparation and weaving forming, and the weaving forming is that the three-dimensional concave-convex multi-layer monofilament and multifilament through hole jacquard fabric with the convex part, the concave part and the plane part is simultaneously formed through a weaving process. Through ingenious combination of the convex parts, the concave parts and the plane parts and through hole structures formed through a special weaving process, the air permeability of the fabric is remarkably improved, obvious three-dimensional fluctuations are further formed on the surface of the fabric, the visual effect of the fabric is improved, and the fabric also shows unique texture in touch.

Description

Technical Field

[0001] The invention relates to a three-dimensional concave-convex multi-layer single-filament or multifilament openwork jacquard fabric, a shoe upper and a preparation method thereof, and belongs to the field of textile weaving. Background Art

[0002] In the current field of shoe upper materials, as consumers' demands for a superior wearing experience continue to rise, traditional shoe upper materials are gradually exposing numerous shortcomings. For one thing, many conventional fabrics have poor breathability. During prolonged wear, especially during exercise, they are unable to quickly expel moisture and heat from the shoe, leading to stuffiness and sweating in the feet, which in turn affects wearing comfort. Furthermore, the texture of these materials is relatively monotonous, lacking a delicate feel and elasticity, making it difficult to visually and tactilely meet people's expectations for high-quality footwear. Furthermore, the lack of three-dimensionality makes it difficult to create rich layering and dimensional effects, resulting in a less full and vivid overall shape and limiting the diversity of shoe designs. Summary of the Invention

[0003] In view of the shortcomings of the existing technology, the purpose of the present invention is to provide a three-dimensional concave-convex multi-layer single-filament openwork jacquard fabric, a shoe upper and a preparation method to solve the technical problem that the existing fabrics cannot take into account the breathability, delicate texture and three-dimensional sense at the same time.

[0004] In order to achieve the above object, the present invention is implemented through the following technical solution: a three-dimensional concave-convex multi-layer single-filament openwork jacquard fabric, the fabric comprising a surface layer, an intermediate layer and a bottom layer, which comprises: The raised portion is formed by the middle layer yarn, the surface layer yarn and the bottom layer yarn through the upper and lower loop knitting method to form an air layer sandwich structure; The concave portion is formed by pulling the bottom layer of yarn downward using a tuck stitch method to form a concave area; The plane portion is formed into a flat surface by knitting the surface yarn in a full-stitch manner.

[0005] Furthermore, at least one of the middle layer yarn, the surface layer yarn and the bottom layer yarn of the raised portion comprises monofilament or multifilament, and the middle layer yarn is woven through upper and lower loops and interwoven with the surface layer yarn and the bottom layer yarn to form an air layer sandwich structure.

[0006] The yarn combination forming the air layer sandwich structure includes but is not limited to: The raised portion is formed by the middle layer monofilaments, the surface layer multifilaments and the bottom layer multifilaments through the upper and lower tuck loops to form an air layer sandwich structure; The raised portion is formed by the middle layer monofilament, the surface layer monofilament and the bottom layer multifilament through the upper and lower tuck loops to form an air layer sandwich structure; The raised portion is formed by the middle layer multifilaments through upper and lower tuck loops together with the surface layer monofilaments and the bottom layer multifilaments to form an air layer sandwich structure; The raised portion is formed by the middle layer multifilaments through upper and lower tuck loops, together with the surface layer multifilaments and the bottom layer monofilaments or multifilaments to form an air layer sandwich structure; The raised portion is formed by the middle layer monofilament through upper and lower tuck loops together with the surface layer monofilament and the bottom layer monofilament to form an air layer sandwich structure; The raised portion is formed by the middle layer multifilament through upper and lower tuck loops together with the surface layer monofilament and the bottom layer monofilament to form an air layer sandwich structure.

[0007] Among them, the material of the monofilament and multifilament is selected from at least one of the following: polyester fiber (polyester), polyamide fiber (nylon), polyurethane elastic fiber (spandex), polyurethane (PU), viscose fiber, animal fiber (including wool, silk), plant fiber (including cotton, linen, bamboo fiber); or high shrinkage yarn, hot-melt yarn, transparent yarn composed of modified forms of the above materials.

[0008] Furthermore, both the recessed portion and the flat portion are provided with a through-hole structure, and the through-hole structure includes tuck through-holes, turn-stitch through-holes and through-holes formed by the middle layer monofilament.

[0009] Among them, the tuck holes are formed by the bottom layer multifilament through the tuck operation, the turn-over holes are formed by the surface layer monofilament or multifilament through the turn-over operation, and the holes formed by the middle layer monofilament are the holes formed by weaving and tuck-over of the middle layer monofilament in either or both the surface layer and the bottom layer. The size and distribution of the hole structure can be adjusted according to the jacquard and yarn density.

[0010] Furthermore, connecting portions are provided between the raised portion and the recessed portion, and between the planar portion and the raised portion and the recessed portion for forming edge transitions.

[0011] Furthermore, the connecting portion realizes a seamless and natural transition between the raised portion and the sunken portion through the upper and lower tuck processes of the middle layer yarn and the alternate needle tuck process of the bottom layer yarn.

[0012] Furthermore, the raised portion and the flat portion are a three-layer structure, consisting of a surface layer yarn, a middle layer yarn and a bottom layer yarn, and the recessed portion is a double-layer structure, consisting of a surface layer yarn and a bottom layer yarn.

[0013] Furthermore, there is a height difference between the convex portion, the concave portion and the flat portion, the convex portion convexes upward relative to the flat portion, and the concave portion is concave downward relative to the flat portion.

[0014] A shoe upper, at least a portion of which is composed of a three-dimensional concave-convex multi-layer single- and multifilament openwork jacquard fabric.

[0015] A preparation method, comprising the following steps: S1. Yarn preparation: select the same or different yarns as the surface layer yarn, middle layer yarn and bottom layer yarn; S2, weaving forming: a three-dimensional concave-convex multi-layer single-filament openwork jacquard fabric with raised parts, recessed parts and flat parts is formed simultaneously through a weaving process; Among them, the surface layer yarn is knitted with full needles to form a flat part, the middle layer yarn is knitted with upper and lower loops to form a raised part, and the bottom layer yarn is pulled down by the surface layer through alternate needle loops to form a recessed part.

[0016] The beneficial effects of the present invention are: The fabric in this application features a three-dimensional concave-convex design, consisting of raised, concave, and flat portions. The raised portions are formed by weaving a middle layer of yarn through upper and lower tuck loops, forming an air layer sandwich structure with the surface and bottom yarns. This structure gives the upper a distinct three-dimensional sense of height, making the shape fuller and more vivid, breaking away from the flatness limitations of traditional upper materials and providing more creative space for shoe design. Furthermore, the three-layer structure of the raised and flat portions, and the double-layer structure of the concave portions, combined with a fine-needle knitting method, further enrich the texture and layering of the upper, presenting a delicate, elastic, and soft texture to the touch, enhancing the wearing experience and sense of quality.

[0017] In this application, the surface yarn is fully woven to form a flat plane portion, which can fit closely with the instep, ensuring that the upper is not easy to loosen and deform, providing a stable wearing effect, and the recessed portion is formed by pulling down the surface layer by the spandex covered yarn in the bottom yarn using the interlaced needle tucking method, making the upper more elastic, able to adapt to the movement and deformation of the foot, reducing the sense of restraint, and making it more comfortable to wear. In addition, the connection between the raised portion and the recessed portion, and between the plane portion and the raised portion and the recessed portion is achieved through the upper and lower tucking process of the middle layer of polyester multifilament and the interlaced needle tucking process of the bottom spandex covered yarn, thereby achieving a natural transition, avoiding friction and discomfort caused by structural mutations on the upper portion, and reducing the occurrence of cracks in the connecting parts.

[0018] The fabric in the present application has excellent breathability by arranging a perforated structure including tuck holes, turn needle holes and holes formed by the middle layer of monofilament on the concave part and the flat part. The above three breathable structures make the fabric have excellent breathability. The perforated structures cooperate with each other to promote the circulation of air in the shoe, can efficiently discharge moisture and heat, and bring a dry and comfortable shoe environment to the wearer, which can effectively reduce the discomfort and odor caused by foot sweating. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Other features, objects and advantages of the present invention will become more apparent upon reading the detailed description of non-limiting embodiments with reference to the following drawings: Figure 1This is a schematic structural diagram of the three-dimensional concave-convex multi-layer single-filament openwork jacquard air layer fabric in this application; Figure 2 Schematic diagram of the cross-sectional structure of the three-dimensional concave-convex multi-layer single-filament openwork jacquard air layer fabric in this application; Figure 3 Schematic diagram of a shoe upper using the multi-layer single-filament openwork jacquard air layer fabric with three-dimensional concave and convex shapes of the present invention; Figure 4 It is a schematic diagram of the weaving of the raised part; Figure 5 It is a schematic diagram of the weaving of the concave part; Figure 6 This is a schematic diagram of the weaving of a planar openwork weaving structure; Figure 7 It is a schematic flow chart of the preparation method of the present invention.

[0020] The reference numerals are: 1, raised portion; 2, recessed portion; 3, flat portion; 4, connecting portion. DETAILED DESCRIPTION

[0021] In order to make the technical means, creative features, objectives and effects achieved by the present invention easier to understand, the present invention is further described below in conjunction with specific implementation methods.

[0022] like Figure 1 、 Figure 2 As shown, the present invention provides a technical solution for a three-dimensional concave-convex multi-layer single-filament open-hole jacquard air layer fabric: the fabric includes a surface layer, an intermediate layer and a bottom layer, and includes: The raised portion 1 is formed by the middle layer yarn, the surface layer yarn and the bottom layer yarn through the upper and lower tuck knitting method to form an air layer sandwich structure; The concave portion 2 is formed by pulling the bottom layer of yarn down using a tuck stitch method to form a concave area; The plane portion 3 is formed into a flat surface by knitting the surface yarn in a full-stitch manner.

[0023] In order to achieve the weaving of different raised parts, at least one layer of the middle layer yarn, surface layer yarn and bottom layer yarn of the raised part 1 contains monofilament or multifilament, and the middle layer yarn is woven through upper and lower loops and interwoven with the surface layer yarn and bottom layer yarn to form an air layer sandwich structure.

[0024] The yarn combination forming the air layer sandwich structure includes but is not limited to: The raised portion 1 is formed by the middle layer monofilaments through upper and lower tuck loops together with the surface layer multifilaments and the bottom layer multifilaments to form an air layer sandwich structure; The raised portion 1 is formed by the middle layer monofilament, the surface layer monofilament and the bottom layer multifilament in the form of an air layer sandwich structure through the upper and lower tuck loops; The raised portion 1 is formed by the middle layer multifilaments through upper and lower tuck loops together with the surface layer monofilaments and the bottom layer multifilaments to form an air layer sandwich structure; The raised portion 1 is formed by the middle layer multifilaments through upper and lower tuck loops together with the surface layer multifilaments and the bottom layer monofilaments or multifilaments to form an air layer sandwich structure; The raised portion 1 is formed by the middle layer monofilament through the upper and lower tuck loops together with the surface layer monofilament and the bottom layer monofilament to form an air layer sandwich structure; The raised portion 1 is formed by the middle layer multifilament through upper and lower tuck loops together with the surface layer monofilament and the bottom layer monofilament to form an air layer sandwich structure.

[0025] In order to increase the applicability of the fabric, the material of the monofilament and multifilament is selected from at least one of the following: polyester fiber (polyester), polyamide fiber (nylon), polyurethane elastic fiber (spandex), polyurethane (PU), viscose fiber, animal fiber (including wool, silk), plant fiber (including cotton, linen, bamboo fiber); or high shrinkage yarn, hot-melt yarn, transparent yarn composed of modified forms of the above materials.

[0026] In order to achieve different air permeability, both the recessed portion 2 and the flat portion 3 are provided with a through-hole structure, wherein the through-hole structure includes tuck through-holes, turn-stitch through-holes and through-holes formed by the middle layer monofilament.

[0027] Among them, the tuck holes are formed by the bottom layer multifilament through the tuck operation, the turn-over holes are formed by the surface layer monofilament or multifilament through the turn-over operation, and the holes formed by the middle layer monofilament are the holes formed by weaving and tuck-over of the middle layer monofilament in either or both the surface layer and the bottom layer. The size and distribution of the hole structure can be adjusted according to the jacquard and yarn density.

[0028] In order to achieve transitional connection between the various parts, connecting parts 4 are provided between the raised part 1 and the recessed part 2, and between the planar part 3 and the raised part 1 and the recessed part 2 to form edge transition.

[0029] In order to achieve a natural transition, the connecting portion 4 realizes a seamless and natural transition between the raised portion 1 and the sunken portion 2 through the upper and lower tuck processes of the middle layer yarn and the alternate needle tuck process of the bottom layer yarn.

[0030] In order to form different structures, the raised portion 1 and the flat portion 3 are three-layer structures, consisting of surface yarn, middle yarn and bottom yarn, and the recessed portion 2 is a double-layer structure, consisting of surface yarn and bottom yarn.

[0031] In order to form a surface structure with a three-dimensional and layered feel, the raised portion 1 , the recessed portion 2 and the flat portion 3 have a height difference with each other. The raised portion 1 is raised upward relative to the flat portion 3 , and the recessed portion 2 is recessed downward relative to the flat portion 3 .

[0032] like Figure 3 As shown, a shoe upper, at least a part of which is composed of a three-dimensional concave-convex multi-layer single-filament multi-filament openwork jacquard fabric, wherein Figure 3 Only one exemplary shoe upper is provided, and the positions of the upper parts of the shoe upper may be adjusted and modified as needed.

[0033] A preparation method, comprising the following steps: S1. Yarn preparation: select the same or different yarns as the surface layer yarn, middle layer yarn and bottom layer yarn; S2, weaving forming: a three-dimensional concave-convex multi-layer single-filament and multi-filament openwork jacquard fabric with a raised portion 1, a recessed portion 2 and a flat portion 3 is formed simultaneously through a weaving process; The surface yarn is knitted with full needles to form a flat portion 3, the middle yarn is knitted with upper and lower tucks to form a raised portion 2, and the bottom yarn is pulled down with alternate needles to form a recessed portion 3.

[0034] In the present application, the surface layer yarn is preferably transparent silk, or transparent multifilament with a low F number, the middle layer yarn is preferably transparent silk or polyester multifilament, and the bottom layer yarn is preferably three types of yarns: spandex covered yarn, polyester multifilament and high shrinkage yarn. The bottom layer yarns are all fully needled through the needle cylinder. When forming the recessed area, only the spandex covered yarn pulls down the surface layer through the needle-gathering method to form a recess in the area; the polyester multifilament and high shrinkage yarn of the bottom layer are only used for weaving the bottom and do not participate in the operation of forming the recessed area.

[0035] In the following embodiments of the present application, the surface layer uses transparent yarn, the middle layer uses polyester multifilament yarn, and the bottom layer uses polyester multifilament yarn, spandex covered yarn and high shrinkage yarn.

[0036] Example 1: like Figure 4 As shown, the surface layer uses transparent yarn as the surface layer monofilament. In the raised portion 1, the surface layer monofilament is woven into an air layer sandwich structure with the polyester multifilament of the middle layer and the polyester multifilament, spandex covered yarn and high shrinkage yarn of the bottom layer through the upper and lower loop weaving method; the middle layer uses polyester multifilament. In the raised portion 1, the polyester multifilament of the middle layer is woven together with the transparent yarn of the surface layer and the polyester multifilament, spandex covered yarn and high shrinkage yarn of the bottom layer; the bottom layer uses polyester multifilament, spandex covered yarn and high shrinkage yarn, and the three yarns are fully needled into the needle cylinder, so that the bottom layer structure is stable and elastic.

[0037] Through the above-mentioned weaving process, the present application forms a raised portion 1 with a three-dimensional effect and a rich sense of layering. Compared with traditional single-layer woven fabrics, the present application forms an air layer sandwich structure, which can ensure the three-dimensional shape and structural stability of the raised portion 1. The tight interweaving of this multi-layer structure enhances the overall strength and durability of the fabric.

[0038] Example 2: like Figure 5 As shown, in the depressed portion 2 area, the transparent yarn of the surface layer is not woven, forming a depressed effect; the polyester multifilament of the bottom layer can be woven in a one-grid-one-weaving-bottom or full-needle knitting manner, and at the same time, the spandex covered yarn is gathered on the needle disc every other needle to form a loop, and the elasticity of the spandex is used to pull the surface layer down to form a depression; the polyester multifilament of the middle layer is converted into a weaving bottom in the depressed portion area and is woven together with the polyester multifilament of the bottom layer to enhance the structural stability of the bottom layer.

[0039] Through the aforementioned weaving process, the present invention forms a recessed portion 2 with excellent elasticity and conformability. The elastic tension of the spandex-covered yarn enables the recessed portion 2 to better conform to the body's curves, providing a comfortable wearing experience. Compared with traditional flat-woven fabrics, the recessed portion 2 design of the present invention not only enhances the fabric's three-dimensionality and layering, but also significantly improves its elasticity. This elasticity enables the upper to better adapt to the movement and deformation of the foot, reducing the sense of restraint and improving wearing comfort. At the same time, the tight weaving of the underlying yarn enhances the structural stability of the fabric, making the upper less likely to deform during wear and extending the product's service life.

[0040] Example 3: like Figure 6 As shown, in the area of ​​the plane part 3, the transparent yarn A of the surface layer is knitted in a full-needle knitting method on the needle disk to form a flat surface. The transparent yarn A of the surface layer is knitted on each needle on the needle disk to ensure the flatness and integrity of the plane part 3; the polyester multifilament C1 of the bottom layer is knitted in a one-grid-one-weaving-bottom manner. At the same time, where through holes are required, the adjacent bottom cylinder needles are knitted with full needles, the needle disk starts half a needle and performs a looping operation, and the yarn knitted by the cylinder is pulled to the needle disk to form a loop, thereby forming a through-hole structure; the polyester multifilament B of the middle layer is converted into a weaving bottom in the area of ​​the plane part 3, and works together with the polyester multifilament C1, spandex covered yarn C2 and high shrinkage yarn C3 of the bottom layer to enhance the structural stability of the plane part 3.

[0041] The present invention utilizes the aforementioned weaving method to form a planar portion 3 having an open-pore structure, thereby enhancing the fabric's breathability. Furthermore, the size of the open-pore structure can be precisely controlled by adjusting the weaving process and the tightness of the yarns. Compared to traditional flat fabrics, the design and combination of multiple open-pore structures in the present invention significantly improves the fabric's breathability.

[0042] Example 4: The fabric in this application also uses a jacquard process, which is a local jacquard of intermediate-color monofilaments. It can be an upper and lower transparent intermediate-color jacquard, or only the surface monofilament intermediate-color jacquard. Among them, the upper and lower transparent intermediate-color jacquard means that in the area where the upper and lower transparent jacquard is required, the transparent yarn A of the surface layer is jacquard woven on the needle disk, and the polyester multifilament C1 of the bottom layer is cooperated with the needle cylinder, so that the jacquard pattern can be clearly seen on the front and back of the fabric; the surface monofilament intermediate-color jacquard refers to the area where jacquard is required on the surface monofilament, the transparent yarn A of the surface layer is jacquard woven on the needle disk, and the polyester multifilament C1 of the bottom layer is full-needle woven, so that the jacquard pattern is only visible on the front of the fabric.

[0043] This design adds rich color changes and pattern decorations to the fabric, and the combination of the jacquard pattern with the recessed portion 2 and the flat portion 3 can further enhance the three-dimensional sense and layering of the fabric without affecting the breathability.

[0044] Example 5: This application includes the following three types of through-hole structures: tuck through-holes, needle through-holes, and through-holes formed by the middle layer monofilament: Tuck holes are formed by pulling the bottom layer of multifilament yarn to the other side of the top or bottom layer through a tuck operation (i.e., forming a loop on the needle plate or syringe). The holes have relatively flat edges and are relatively uniform in size. Due to the large depth of the holes, air can flow smoothly between the two sides of the fabric, thereby enhancing the fabric's breathability. Through-hole stitching creates holes in the monofilament or multifilament yarn of the facing layer through a transfer operation (i.e., transferring the coils from the needle dial to the needle cylinder, or vice versa). The holes have relatively flat edges and are relatively uniform in size. Because the holes are primarily concentrated on the surface of the fabric, they are relatively shallow, potentially less breathable than through-hole stitching. However, by varying the number and frequency of transfer stitches, a variety of hole patterns can be created. The holes formed by the middle layer monofilaments are formed by weaving small holes through the middle layer monofilaments in the top layer, small holes through the middle layer monofilaments in the bottom layer, and holes that are transparent from top to bottom through the middle layer monofilaments in both the top and bottom layers. These holes increase the breathability and air flow of the fabric, allowing air to circulate through the small holes in the middle layer, thereby improving the wearing comfort of the fabric. In addition, these holes can be combined with other hole structures to form a composite hole effect, further optimizing the breathability and wearing experience of the fabric.

[0045] This application uses the mutual cooperation of the above three perforated structures to jointly constitute a perforated system of the fabric, thereby improving its breathability, three-dimensional sense, aesthetics and wearing comfort, and meeting the usage needs in different scenarios.

[0046] Through the examples, it can be found that the three-dimensional concave and convex multi-layer single-filament perforated jacquard air layer fabric of the present application adopts a fine needle weaving method, combined with its unique multi-layer structure design, it shows significant advantages in production capacity and efficiency. Fine needle weaving can achieve a finer weaving effect, making the perforated structure and three-dimensional layering of the fabric more precise and rich, bringing a more delicate and Q-feeling feel, and through the use of different yarn combinations of the surface layer, middle layer and bottom layer, and the use of weaving processes such as loop collection and needle turning, while improving the weaving accuracy, the efficiency of the weaving process is guaranteed.

[0047] Compared with traditional weaving methods, the weaving process of the present application can simultaneously complete the weaving of the raised portion 1, the recessed portion 2 and the flat portion 3 in one weaving cycle, reducing the complexity of the process and improving the weaving efficiency; the tightness of the fine needle weaving also enhances the overall structural stability of the fabric, reduces the defective rate in the production process, and further improves production capacity; and the yarn is efficiently utilized in the weaving process, reducing the waste of raw materials and reducing production costs. This efficient weaving method and optimization of structural design make the fabric of the present application more competitive in large-scale production, and can meet the market's large demand for high-quality, functional upper materials, providing strong support for the company's efficient production and economic benefits.

[0048] Example 6: like Figure 7 As shown, this embodiment provides a method for preparing a three-dimensional concave-convex multi-layer single-filament or multi-filament openwork jacquard fabric, and the specific steps are as follows: S1. Yarn preparation: select the same or different yarns as the surface layer yarn, middle layer yarn and bottom layer yarn; S2, weaving forming: a three-dimensional concave-convex multi-layer single-filament and multi-filament openwork jacquard fabric with a raised portion 1, a recessed portion 2 and a flat portion 3 is formed simultaneously through a weaving process; Weaving of the flat part 3: Transparent silk is used as the surface yarn, and the flat part 3 is formed by full-stitch knitting. Full-stitch knitting can ensure that the flat part 3 has a high density and stability, making the surface of the fabric smooth and flat, fitting closely to the foot, and comfortable to wear; The raised portion 1 is braided with polyester multifilament yarn as the middle layer yarn, and the raised portion 1 with an air layer sandwich structure is formed together with the surface layer yarn and the bottom layer yarn through the upper and lower tuck weaving method. The upper and lower tuck weaving makes the middle layer yarn form a loop between the surface layer and the bottom layer yarn, thereby preparing the air layer.

[0049] Weaving of the recessed part 2: Utilizing the spandex covered yarn of the bottom layer, the nylon multifilament of the surface layer is pulled down in a needle-tight manner to form a recessed area. The elasticity of the spandex covered yarn makes the recessed part 2 have good elasticity and resilience, which can better fit the curve of the foot, provide a comfortable wearing experience, and at the same time increase the three-dimensional sense and layering of the fabric.

[0050] S3. Through-hole setting and connection transition: A through-hole structure is set on the recessed part 2 and the flat part 3, and a seamless and natural transition is achieved between the raised part 1, the recessed part 2 and the flat part 3 through the connection part 4. Among them, the design of the connection part 4 avoids the friction and discomfort caused by the structural mutation of the fabric, reduces the occurrence of cracks in the connecting part, ensures the integrity and durability of the fabric, and makes the shoe upper more comfortable, fit-fitting and not easy to deform during wearing.

[0051] Through the above-mentioned weaving method, this embodiment successfully prepared a multi-layer single-filament openwork jacquard fabric with a three-dimensional concave-convex effect, good air permeability and comfort. The fabric not only visually presents a rich sense of layering and three-dimensionality, which can meet people's aesthetic needs for high-quality footwear products, but also has excellent air permeability, elasticity and fit.

[0052] The fabric in this application features a three-dimensional concave-convex design, comprising a raised portion 1, a recessed portion 2, and a flat portion 3. The raised portion 1 is formed by weaving a middle layer of yarn with the top and bottom yarns through a tuck-and-loop knitting method, forming an air layer sandwich structure. This unique structure gives the upper a distinct three-dimensional sense of height, making the shape fuller and more vivid, breaking away from the flatness limitations of traditional upper materials and providing more creative space for shoe design. Furthermore, the three-layer structure of the raised portion 1 and the flat portion 3, and the double-layer structure of the recessed portion 2, combined with a fine-needle knitting method, further enrich the texture and layering of the upper, presenting a delicate and elastic texture to the touch, enhancing the wearing experience and sense of quality.

[0053] In the present application, the surface yarn is knitted with full needles to form a flat plane portion 3, which can fit closely with the instep, ensuring that the upper is not easy to loosen and deform, and providing a stable wearing effect. The recessed portion 2 is formed by pulling down the surface layer by the spandex covered yarn in the bottom yarn using the interleaved needle tucking method, making the upper more elastic, able to adapt to the movement and deformation of the foot, reducing the sense of restraint, and making it more comfortable to wear. In addition, the connecting parts 4 between the raised part 1 and the recessed part 2, and between the plane part 3 and the raised part 1 and the recessed part 2 are achieved through the upper and lower tucking process of the middle layer of polyester multifilament and the interleaved needle tucking process of the bottom spandex covered yarn, thereby achieving a natural transition, avoiding friction and discomfort caused by structural mutations on the upper, and reducing the occurrence of cracks in the connecting parts.

[0054] The fabric in the present application has excellent breathability by providing a perforated structure including tuck holes, turn needle holes and holes formed by the middle layer of monofilament on the recessed part 2 and the flat part 3. The three breathable structures mentioned above make the fabric have excellent breathability. The perforated structures cooperate with each other to promote the circulation of air in the shoe, can efficiently discharge moisture and heat, bring a dry and comfortable shoe environment to the wearer, and can effectively reduce the discomfort and odor caused by foot sweating.

[0055] The above shows and describes the basic principles and main features of the present invention and the advantages of the present invention. It will be apparent to those skilled in the art that the present invention is not limited to the details of the exemplary embodiments described above and that the present invention can be implemented in other specific forms without departing from the spirit or essential characteristics of the present invention. Therefore, from all perspectives, the embodiments should be regarded as illustrative and non-restrictive. The scope of the present invention is defined by the appended claims, not the foregoing description, and it is intended that all variations that come within the meaning and range of equivalents of the claims be included within the present invention. Any reference signs in the claims should not be construed as limiting the claim to which they relate.

[0056] In addition, it should be understood that although this specification is described in terms of implementation methods, not every implementation method contains only one independent technical solution. This narrative method of the specification is only for the sake of clarity. Those skilled in the art should regard the specification as a whole. The technical solutions in each embodiment can also be appropriately combined to form other implementation methods that can be understood by those skilled in the art.

Claims

1. A three-dimensional concave-convex multi-layer single-filament and multi-filament openwork jacquard fabric, characterized by: The fabric comprises a surface layer, a middle layer and a bottom layer, which includes: A raised portion (1), wherein the raised portion (1) is formed by the middle layer yarn, the surface layer yarn and the bottom layer yarn through an upper and lower tuck knitting method to form an air layer sandwich structure; A recessed portion (2), wherein the recessed portion (2) is formed by pulling down the surface layer with the bottom yarn in a spacer-needle tuck manner to form a recessed area; The plane portion (3) is formed by knitting the surface yarn in a full-needle manner to form a flat surface.

2. The three-dimensional concave-convex multi-layer single- and multi-filament openwork jacquard fabric according to claim 1, characterized in that: At least one of the middle layer yarn, the surface layer yarn and the bottom layer yarn of the raised portion (1) comprises monofilament or multifilament, and the middle layer yarn is woven through upper and lower loops and interwoven with the surface layer yarn and the bottom layer yarn to form an air layer sandwich structure.

3. The three-dimensional concave-convex multi-layer single- and multi-filament openwork jacquard fabric according to claim 1, characterized in that: The recessed portion (2) and the flat portion (3) are both provided with a through-hole structure, wherein the through-hole structure comprises a tuck through-hole, a turn-needle through-hole, and a through-hole formed by a middle layer of monofilament.

4. The three-dimensional concave-convex multi-layer single- and multi-filament openwork jacquard fabric according to claim 1, characterized in that: Connecting portions (4) are provided between the raised portion (1) and the recessed portion (2), and between the plane portion (3) and the raised portion (1) and the recessed portion (2) for forming edge transitions.

5. The three-dimensional concave-convex multi-layer single- and multi-filament openwork jacquard fabric according to claim 4, characterized in that: The connecting portion (4) achieves a seamless and natural transition between the raised portion (1) and the sunken portion (2) through the upper and lower tucking process of the middle layer yarn and the interleaved tucking process of the bottom layer yarn.

6. The three-dimensional concave-convex multi-layer single- and multi-filament openwork jacquard fabric according to claim 1, characterized in that: The raised portion (1) and the flat portion (3) are three-layer structures, consisting of a surface layer yarn, a middle layer yarn and a bottom layer yarn; the recessed portion (2) is a double-layer structure, consisting of a surface layer yarn and a bottom layer yarn.

7. The three-dimensional concave-convex multi-layer single- and multi-filament openwork jacquard fabric according to claim 1, characterized in that: The raised portion (1), the recessed portion (2) and the plane portion (3) have a height difference with each other; the raised portion (1) is raised upward relative to the plane portion (3), and the recessed portion (2) is recessed downward relative to the plane portion (3).

8. A shoe upper, characterized in that: At least a portion of the shoe upper is composed of the three-dimensional concave-convex multi-layer single- and multi-filament openwork jacquard fabric according to any one of claims 1 to 7.

9. A method for preparing the three-dimensional concave-convex multi-layer single-filament or multi-filament openwork jacquard fabric according to any one of claims 1 to 7, characterized in that: The process is as follows: S1. Yarn preparation: select the same or different yarns as the surface layer yarn, middle layer yarn and bottom layer yarn; S2, weaving forming: forming a three-dimensional concave-convex multi-layer single-filament multifilament openwork jacquard fabric with a raised portion (1), a recessed portion (2) and a flat portion (3) simultaneously through a weaving process; The surface layer yarn is knitted with full needles to form a flat portion (3), the middle layer yarn is knitted with upper and lower loops to form a raised portion (2), and the bottom layer yarn is pulled down with alternate needles to form a recessed portion (3).

Images