String wire reinforced vamp and shoe with string wire reinforced vamp

Abstract

The utility model discloses a string silk reinforced vamp and a shoe with the string silk reinforced vamp. The string silk reinforced vamp comprises a base layer and a reinforced layer, and the base layer comprises one or more first yarns which are evenly laid in the warp direction and the weft direction and are welded and fixed at the overlapping position; the reinforcing layer comprises one or more second yarns which are paved on the base layer in a reciprocating manner; the second yarns are welded and fixed with the first yarns of the base layer, and the second yarns are welded and fixed with each other at the mutually staggered overlapping parts of the second yarns; the reinforcing layer is provided with a plurality of reinforcing parts formed by overlapping and laying second yarns, and the adjacent second yarns in the reinforcing parts are mutually welded and fixed; the cross section of the second yarn is in a flat shape with the up-down size smaller than the left-right size. By adopting the string wire reinforced vamp with the structure, the wrapping property of the vamp can be improved.

Description

Technical Field

[0001] The invention relates to the technical field of shoe uppers, and in particular to a string-reinforced shoe upper and a shoe having the string-reinforced shoe upper. Background Art

[0002] Footwear consists of two main components: the upper and the sole. The upper provides support for the foot, accommodating and positioning the foot relative to the sole. Furthermore, the upper can be breathable to allow perspiration to escape. The sole is typically connected to and located beneath the upper, forming a shoe cavity to accommodate the foot. Furthermore, the sole provides cushioning and rebound properties, enhancing the overall comfort of the footwear.

[0003] Different materials can be used to manufacture shoe uppers. For example, the upper of a sports shoe can be made of a variety of different materials, including the outer layer, middle layer, and inner layer. Depending on the structural properties required of each layer, for example, if the outer layer requires better wear resistance, leather, synthetic leather, rubber, etc. can be selected as the outer layer material; for the inner layer, materials with good moisture absorption properties can be used.

[0004] To improve breathability, shoe uppers are made thinner and feature more ventilation holes. For example, mesh is used as part of the upper, typically located at the toe box. These thin, breathable uppers are typically made by weaving fibers and yarns through warp and weft. However, due to the warp and weft weaving method, the connections between the yarns can easily become loose, resulting in poor shoe wrapping. Summary of the Invention

[0005] The object of the present invention is to overcome the above-mentioned defects or problems existing in the background technology and provide a string-reinforced shoe upper and a shoe having the string-reinforced shoe upper, wherein the string-reinforced shoe upper can improve the wrapping property of the shoe upper.

[0006] To achieve the above object, the present invention adopts the following technical solutions:

[0007] Technical Solution 1: A string-reinforced shoe upper, comprising: a base layer, comprising one or more first yarns evenly laid along the warp and weft directions and fused and fixed at the overlapping parts; a reinforcement layer, comprising one or more second yarns laid back and forth on the base layer; the second yarns are fused and fixed to the first yarns of the base layer, and at the overlapping parts where the second yarns are intertwined with each other, the second yarns are fused and fixed to each other; the reinforcement layer has a plurality of reinforcement parts formed by overlapping and laying second yarns, and adjacent second yarns in the reinforcement parts are fused and fixed to each other; the cross-sectional shape of the second yarn is flat, with the upper and lower dimensions being smaller than the left and right dimensions.

[0008] Technical solution 2 based on technical solution 1: In the cross-sectional shape of the second yarn, its upper and lower dimensions are smaller than half of its left and right dimensions.

[0009] Technical solution three based on technical solution one: the first yarn and the second yarn are both core-spun yarns, and the skin layers of both are thermoplastic elastomer materials, and the melting points of the core layers of both are higher than the skin layers.

[0010] Technical solution four based on technical solution three: the welding of the first yarns to each other, the welding of the second yarn and the first yarn, and the welding of the second yarns to each other are only the welding of the skin layers of the first yarn and the second yarn into one.

[0011] Technical solution five based on technical solution three: the thermoplastic elastomer material used in the skin layer of the first yarn and the second yarn is polyurethane thermoplastic elastomer, polyester thermoplastic elastomer, polyamide thermoplastic elastomer or polyethylene thermoplastic elastomer.

[0012] Technical solution six based on technical solution three: the core layers of the first yarn and the second yarn are made of one or more of polyester, nylon, ultra-high molecular weight polyethylene, carbon fiber, and glass fiber.

[0013] Technical Solution 7 based on Technical Solution 3: In the cross-sectional shape of the second yarn, calculated by area percentage, the cortex occupies 10%-80%, and the core layer occupies 20%-90%.

[0014] Technical solution eight based on technical solution one: the cross-sectional shape of the first yarn is circular, and its diameter is smaller than the left and right dimensions of the second yarn.

[0015] Technical solution nine based on technical solution one: the cross-sectional shape of the first yarn is a flat shape with the upper and lower dimensions smaller than the left and right dimensions, and its left and right dimensions are smaller than the left and right dimensions of the second yarn.

[0016] Technical solution 10 based on technical solution 1: also includes a surface layer, which is formed by one or more third yarns laid back and forth on the reinforcement layer; the third yarn is welded and fixed to the second yarn of the reinforcement layer and / or to the first yarn of the base layer, and at the overlapping parts where the third yarns are intertwined with each other, the third yarns are welded and fixed to each other.

[0017] Technical solution eleven based on technical solution ten: the cross-sectional shape of the third yarn is flat with the upper and lower dimensions smaller than the left and right dimensions, and its left and right dimensions are smaller than or equal to the left and right dimensions of the second yarn.

[0018] Technical solution 12 based on technical solution 1: The base layer also includes a first yarn evenly laid along an oblique direction at an angle of 45° to the warp and weft directions respectively, and the obliquely laid first yarn is welded with the first yarn laid in the warp and weft directions at the overlapping points.

[0019] In addition, the present invention also provides technical solution thirteen: a shoe with a string-reinforced upper, which includes a sole and also includes the string-reinforced upper as described in any one of technical solutions one to twelve, and the upper is fixed to the sole.

[0020] Technical Solution 14 based on Technical Solution 13: In the reinforcement layer of the upper, there is a portion of the second yarn whose routing extends obliquely upward from the heel area to the shoelace hole area, and multiple reinforcement parts are arranged on the routing of this portion of the second yarn.

[0021] Technical Solution 15 based on Technical Solution 14: At the edge of the reinforcing layer of the upper connected to the sole, a reinforced connection portion is formed by closely arranged second yarns in parallel.

[0022] From the above description of the present invention, it can be seen that compared with the prior art, the present invention has the following beneficial effects:

[0023] The present invention provides a string-reinforced shoe upper, a method for preparing the string-reinforced shoe upper, and shoes with the string-reinforced shoe upper. When the string-reinforced shoe upper is applied to a shoe, the wrapping property of the shoe can be improved.

[0024] The string-reinforced upper mainly includes a base layer and a reinforcement layer. Through a multi-layer arrangement, it lays the foundation for improving the wrapping of the upper. Among them, the first yarns, the second yarns, and the first yarns and the second yarns are fixed by welding, thereby improving the connection strength between the yarns and reducing the loosening phenomenon that may occur in the traditional weaving method. In addition, the reinforcement layer is also provided with multiple reinforcement parts. The reinforcement parts are formed by overlapping and laying the second yarns. The overlapping laying structure further enhances the structural strength of the reinforcement layer at the position of the reinforcement part. At the same time, the second yarns in the reinforcement part are also fixed to each other by welding. Therefore, the second yarns in the reinforcement part are not easy to loosen, and the reinforcement part can have better structural stability. At the same time, the cross-sectional shape of the second yarn is flat, with the upper and lower dimensions smaller than the left and right dimensions. Compared with round yarns, the flat second yarn can better fit the curved surface of the upper when laid, reducing material waste, while increasing the contact area with the first yarn or other second yarns, improving the welding strength. While providing the same structural strength, the thickness of the reinforcement layer is thinner and the material is more economical. Moreover, since the upper does not adopt a warp and weft woven structure, air channels of different sizes can be formed between the first yarns and the second yarns, which can further improve the air permeability of the upper; therefore, the string-reinforced upper has better structural strength and air permeability, improves the wrapping of the foot, and is more suitable for high-intensity sports.

[0025] The first yarn and the second yarn are both core-spun yarns, whose cortex is a thermoplastic elastomer material, and the melting point of the core layer is higher than that of the cortex. During welding, the cortexes of the first yarn and the second yarn will slightly melt, and the contacting parts of the yarns will fuse. After cooling, the fuse parts of the yarns can be connected as one. At the same time, the core layer can ensure that the structural strength of the upper is not affected, so that the upper maintains sufficient strength and performance.

[0026] The cross-sectional shape of the first yarn can be circular or flat. In both shape structures, the size of the first yarn is smaller than that of the second yarn, so that the second yarn can form a fusion-fixed relationship with more first yarns at the same time, thereby improving the connection strength between the reinforcing layer and the base layer.

[0027] The surface layer is provided to further enhance the overall structural strength of the upper and improve the wrapping of the upper to the foot. At the same time, the surface layer can be designed to form a characteristic pattern to increase the aesthetics and functionality of the upper.

[0028] In the base layer, the weaving direction of the first yarn can include diagonal directions in addition to warp and weft. The diagonally extended first yarn increases the connection strength between the first yarns extending in different directions, can improve the tensile performance of the upper in all directions, and better adapt to the stress conditions during exercise.

[0029] The shoe with a string-reinforced upper provided by the present invention comprises the string-reinforced upper and a sole secured to the upper. Within the upper's reinforcement layer, a portion of the second yarn runs obliquely upward from the heel to the lace holes, and multiple reinforcements are provided along this portion of the second yarn. This arrangement effectively enhances the structural strength of the upper at the side. When used in footwear requiring high lateral strength, such as basketball shoes, the strength provided by the upper in this area can effectively improve athletic performance.

[0030] In addition, at the edge of the reinforcing layer of the upper connected to the sole, a second yarn is arranged tightly in parallel to form a reinforced connection portion, which gives the upper a higher structural strength at the connection with the sole, preventing the upper from being disconnected from the sole when pulled. BRIEF DESCRIPTION OF THE DRAWINGS

[0031] In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the following briefly introduces the drawings required for use in the description of the embodiments. Obviously, the drawings described below are some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying any creative work.

[0032] Figure 1 A schematic diagram of the expanded string-reinforced shoe upper provided by an embodiment of the present invention;

[0033] Figure 2 for Figure 1 A magnified schematic diagram of part A;

[0034] Figure 3 A schematic cross-sectional view of a string-reinforced shoe upper provided by an embodiment of the present invention;

[0035] Figure 4 A schematic cross-sectional view of a string-reinforced shoe upper provided by an embodiment of the present invention;

[0036] Figure 5 A schematic cross-sectional view of a second yarn provided in an embodiment of the present invention.

[0037] Description of main reference numerals:

[0038] Base layer 1; first yarn 2; reinforcement layer 3; second yarn 4; reinforcement part 5; leather layer 6; core layer 7; surface layer 8; third yarn 9; heel part 10; shoelace hole part 11; reinforcement connection part 12. DETAILED DESCRIPTION

[0039] The following will clearly and completely describe the technical solutions in the embodiments of the present invention in conjunction with the accompanying drawings. Obviously, the described embodiments are preferred embodiments of the present invention and should not be regarded as excluding other embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making any creative efforts shall fall within the scope of protection of the present invention.

[0040] In the claims, description and drawings of the present invention, unless otherwise clearly defined, the use of terms such as "first", "second" or "third" is for the purpose of distinguishing different objects rather than for describing a specific order.

[0041] In the claims, specification and the above-mentioned drawings of the present invention, unless otherwise expressly defined, directional words such as the terms "center", "transverse", "longitudinal", "horizontal", "vertical", "top", "bottom", "inside", "outside", "up", "down", "front", "back", "left", "right", "clockwise", "counterclockwise" and the like indicating directions or positional relationships are based on the directions and positional relationships shown in the drawings, and are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific direction or be constructed and operated in a specific direction, and therefore cannot be understood as limiting the specific scope of protection of the present invention.

[0042] In the claims, description and above-mentioned drawings of the present invention, unless otherwise expressly defined, the terms "fixed connection" or "fixed connection" should be understood in a broad sense, that is, any connection method without displacement relationship and relative rotation relationship between the two parties, that is, including non-detachable fixed connection, detachable fixed connection, integral connection and fixed connection through other devices or elements.

[0043] In the claims, description and drawings of the present invention, if the terms "include", "have" and their variations are used, they are intended to mean "including but not limited to".

[0044] An embodiment of the present invention relates to a string-reinforced shoe upper, which can be applied to footwear products and provide restraint and support for the user's foot, thereby improving the wrapping of the user's foot and having the advantages of light weight and good breathability.

[0045] Reference Figure 1The string-reinforced shoe upper provided in this embodiment includes a base layer 1 and a reinforcement layer 3. The base layer 1 includes one or more first yarns 2 uniformly laid out in the warp and weft directions and fused together at the overlapping locations. The reinforcement layer 3 includes one or more second yarns 4 laid back and forth on the base layer 1. The second yarns 4 are fused together with the first yarns 2 of the base layer 1, and the second yarns 4 are fused together at the overlapping locations where the second yarns 4 intersect. The reinforcement layer 3 has a plurality of reinforcement sections 5 formed by overlapping second yarns 4. Adjacent second yarns 4 in the reinforcement sections 5 are fused together.

[0046] Among them, reference Figure 2 、 Figure 3 or Figure 5 The cross-sectional shape of the second yarn 4 is a flat shape with the upper and lower dimensions being smaller than the left and right dimensions.

[0047] Before describing the specific structure of the string-reinforced shoe upper, it is necessary to further define the positional terms used in this specification and claims to describe the shoe upper or shoe. Figure 1 , which shows a schematic diagram of the string-reinforced upper in a flattened state, based on conventional orientation references, Figure 1 The side of the shoe upper facing outward from the paper is its upper side, and the side facing the back of the paper is its lower side. The rest of the meanings of "upper" and "lower" are the same as the definitions of the upper and lower directions of the shoe upper. At the same time, when the shoe upper is applied to a footwear product, it forms a three-dimensional shape that adapts to the user's foot. At the same time, the shoe upper is defined as "inside" and "outside", where "inside" refers to the side formed by the cooperation of the shoe upper and the sole for accommodating the user's foot, and "outside" is the other side opposite to "inside". For footwear products, the definitions of "front side" and "back side" are also included, where the front side refers to the midline away from the user's body, and the back side refers to the midline toward the user's body; for example, for a shoe for the right foot, the left edge of the shoe is its back side, and the right edge of the shoe is its front side. In addition, the above description also includes parts limited by "left" and "right". Depending on the object being described, "left" and "right" have different definitions, but in general, they refer to the direction perpendicular to the up and down directions and perpendicular to the front and back directions; for the first yarn 2 or the second yarn 4, the left and right directions of its cross-section are defined with its extension direction as the front and back direction as the reference.

[0048] The base layer 1 includes one or more first yarns 2 that are evenly laid along the warp and weft directions and fused together at the overlapping locations. The warp and weft directions refer to two directions perpendicular to each other on a plane. In this embodiment, the warp and weft directions can be considered to be the front-to-back and left-to-right directions, respectively. When forming the base layer 1, the first yarns 2 can first be evenly laid along the left-to-right direction at predetermined intervals, that is, forming the warp yarns. The first yarns 2 can then be evenly laid along the front-to-back direction at predetermined intervals, that is, forming the weft yarns. The first yarns 2 can then be fused together at the overlapping locations of the warp and weft yarns by heat pressing, thereby obtaining the base layer 1.

[0049] Taking the laying of the yarn in the warp direction as an example, a separate first yarn 2 can be laid at each position in the left-right direction, or a first yarn 2 can be laid starting from a preset position, for example, from front to back to a preset end position, then turned back and laid in the opposite direction, that is, from back to front to a preset end position, and between the two layings, a preset distance will be spaced between adjacent yarns at different positions in the left-right direction, and this process is repeated to finally form the warp yarns in the base layer 1. It is easy to understand that the laying of the yarn in the weft direction is also the same, and the first yarn 2 in the warp direction and the first yarn 2 in the weft direction can even be the same yarn.

[0050] In another embodiment, the base layer 1 may further include first yarns 2 uniformly laid along an oblique direction at an angle of 45° to the warp and weft directions, and the obliquely laid first yarns 2 are welded to the first yarns 2 laid in the warp and weft directions at the overlapping locations. Figure 2 , Figure 2 for Figure 1The enlarged schematic diagram of section A in the middle shows that, in addition to first yarns 2 extending in the front-to-back and left-to-right directions, the base layer 1 also includes first yarns 2 extending diagonally. Diagonal directions here include two directions: one from front to back and left to right, and the other from front to back and right to left. Therefore, it can be considered that the base layer 1 actually has four layers of first yarns 2 laid out from bottom to top, with the first layer at the bottom and the fourth layer at the top. The first layer can be yarns running along the warp direction, the second layer can be yarns running in the weft direction, the third layer can be yarns running from front to back and left to right, and the fourth layer can be yarns running from front to back and right to left. Furthermore, first yarns 2 on different layers may overlap at different locations due to the spacing between first yarns 2 on the same layer. For example, the first yarn 2 on the first layer may overlap with the first yarn 2 on the second layer at a certain location, while the first yarns 2 on the third and fourth layers may overlap at the same location or at different locations. At the same time, it should be noted that although the base layer 1 can be considered to have a multi-layer structure, since the first yarns 2 of different layers are fixedly connected by welding, and gaps are formed between the first yarns 2 of the same layer, the overall thickness of the base layer 1 is not the thickness after the four layers of first yarns 2 overlap, but is determined according to the number of overlapping first yarns 2. For example, at some positions only two layers of first yarns 2 overlap, and at some positions four layers of first yarns 2 overlap. Therefore, the base layer 1 is not a flat structure, but has different thicknesses at different positions according to the difference in the number of overlapping first yarns 2.

[0051] The base layer 1 is made of multiple layers of overlapping first yarns 2, and is welded and fixed at the overlapping parts, so that the base layer 1 itself has sufficient structural strength and can be used as the basis of the reinforcement layer 3. By cooperating with the reinforcement layer 3, the overall structural strength of the upper is further improved.

[0052] Reference Figure 1 The reinforcing layer 3 includes one or more second yarns 4 laid back and forth on the base layer 1, and the second yarns 4 in the reinforcing layer 3 are fused and fixed to the first yarns 2 of the base layer 1 located therebelow. The "back and forth laying" here is a limitation on the routing of the second yarns 4 in the reinforcing layer 3. Back and forth means that the second yarns 4 do not have a specific and restricted routing direction. For example, the second yarns 4 can be restricted to extend in the left and right directions and then turn and route forward, or the second yarns 4 can route from left to right and then turn and continue to route from right to left. Laying means that the second yarns 4 are laid on the base layer 1. The second yarns 4 may not be connected to each other, and the reinforcing layer 3 is fixed by the base layer 1, so that the reinforcing layer 3 also forms a whole.

[0053] Of course, in actual applications, the second yarn 4 in the reinforcing layer 3 will have multiple mutually interlaced overlapping parts. Similar to the first yarn 2 in the base layer 1, the second yarn 4 in the reinforcing layer 3 will also form a fixed connection by welding at the interlaced overlapping parts.

[0054] Furthermore, in the areas where the upper needs to be further strengthened in terms of structural strength, the reinforcing layer 3 is further provided with a reinforcing portion 5. The reinforcing portion 5 is formed by overlapping and laying the second yarns 4, and adjacent second yarns 4 in the reinforcing portion 5 are welded and fixed to each other. Figure 1 At the position of the reinforcement part 5, the second yarns 4 can be overlapped back and forth at the same position, so that the reinforcement layer 3 has more layers of second yarns 4 at the position of the reinforcement part 5. At the same time, the second yarns 4 at the position of the reinforcement part 5 are fixedly connected by welding, so that the second yarns 4 at the position of the reinforcement part 5 can form a tight whole, providing higher structural strength and tensile performance. Among them, the routing of the second yarns 4 in the reinforcement part 5 can be along approximately the same direction and stacked at the same position, or along intersecting directions and overlapped and stacked multiple times at the intersecting places, or most of the second yarns 4 are routed along approximately the same direction, and a small number of second yarns 4 are routed along other intersecting directions and intersect and overlap with most of the second yarns 4. By providing the reinforcement part 5, the structural strength of the string-reinforced upper at a specific position can be effectively improved.

[0055] And, refer to Figure 3 and Figure 5 In this embodiment, the cross-sectional shape of the second yarn 4 used is a flat shape with the upper and lower dimensions being smaller than the left and right dimensions. Specifically, the second yarn 4 does not adopt a conventional yarn with a circular cross section, but adopts a yarn with a flatter shape. Figure 5The elliptical shape of the second yarn 4 shown is merely an example. In other embodiments, the cross-sectional shape of the second yarn 4 may be a rectangular shape with rounded corners, depending on the mold used to form the second yarn 4. However, it is certain that the dimensions of the cross-sectional shape of the second yarn 4 are such that its top-to-bottom dimension is smaller than its left-to-right dimension. The left-to-right dimension here refers to the approximate distance between the left and right edges of the second yarn 4, perpendicular to the direction of extension of the second yarn 4 and perpendicular to the top-to-bottom direction. Similarly, the top-to-bottom dimension here refers to the approximate distance between the top and bottom edges of the second yarn 4. Because the outer edges of the second yarn 4 may not be flat, the aforementioned dimensions define the shape of the second yarn 4 at a larger scale; as long as the cross-sectional shape of the second yarn 4 is generally flat, it will suffice. When the flat second yarn 4 is laid back and forth to form the reinforcement layer 3, compared with the yarn with a circular cross-section, at the same weight, the flat second yarn 4 can occupy a larger plane area. At the same time, the second yarns 4 have a larger connection area when they are welded and fixed, which can make the connection between the second yarns 4 and between the second yarn 4 and the first yarn 2 more secure.

[0056] Therefore, the string-reinforced shoe upper involved in this embodiment mainly includes a base layer 1 and a reinforcement layer 3, which are arranged in multiple layers to establish a foundation for improving the wrapping of the shoe upper; wherein, the first yarns 2, the second yarns 4, and the first yarns 2 and the second yarns 4 are fixed by welding, thereby improving the connection strength between the yarns and reducing the loosening phenomenon that may occur in the traditional weaving method; and, the reinforcement layer 3 is also provided with a plurality of reinforcement parts 5, which are formed by overlapping the second yarns 4. The overlapping structure further enhances the structural strength of the reinforcement layer 3 at the reinforcement part 5, and at the same time strengthens The second yarns 4 of the reinforcing portion 5 are also fixed to each other by welding, so the second yarns 4 of the reinforcing portion 5 are less likely to become loose, and the reinforcing portion 5 can have better structural stability. Furthermore, the cross-sectional shape of the second yarns 4 is flat, with the upper and lower dimensions being smaller than the left and right dimensions. Compared to round yarns, the flat second yarns 4 can better conform to the curved surface of the upper during laying, reducing material waste. This also increases the contact area with the first yarns 2 or with other second yarns 4, improving the welding strength. While providing the same structural strength, the thickness of the reinforcing layer 3 is thinner, and material is more economical. Furthermore, because the upper does not utilize a warp-and-weft weaving structure, ventilation channels of varying sizes can be formed between the first yarns 2 and the second yarns 4, further improving the upper's breathability. Therefore, the string-reinforced upper has good structural strength and breathability, improves foot wrapping, and is more suitable for high-intensity exercise.

[0057] In another aspect of the string-reinforced shoe upper described herein, the string-reinforced shoe upper further includes a surface layer 8 formed by one or more third yarns 9 laid back and forth on the reinforcing layer 3. The third yarns 9 are fused to the second yarns 4 of the reinforcing layer 3 and / or to the first yarns 2 of the base layer 1. Furthermore, the third yarns 9 are fused to each other at the intersections where the third yarns 9 intersect and overlap. The cross-section of the third yarn 9 is flat, with its top-to-bottom dimension smaller than its left-to-right dimension, and its left-to-right dimension is smaller than or equal to that of the second yarn 4.

[0058] Reference Figure 4 The surface layer 8 is similar to the reinforcement layer 3 and can be formed by the third yarn 9 being laid back and forth on the reinforcement layer 3. Moreover, since the reinforcement layer 3 does not completely cover the base layer 1, there are still gaps between the second yarns 4 of the reinforcement layer 3, so the third yarn 9 may also contact the first yarn 2 of the base layer 1. The surface layer 8 can further enhance the overall structural strength of the upper and improve the upper's wrapping of the foot. At the same time, the surface layer 8 can be designed to form a distinctive pattern, increasing the aesthetics and functionality of the upper. Similar to the second yarn 4, the cross-sectional shape of the third yarn 9 can also be flat, with the upper and lower dimensions smaller than the left and right dimensions. In addition to the advantages of the flat structure of the second yarn 4, the cross-sectional shape of the third yarn 9 is similar to that of the second yarn 4, which can improve the overall consistency of the appearance of the string-reinforced upper and also improve the connection strength between the third yarn 9, the second yarn 4, and the first yarn 2, preventing the surface layer 8 from falling off the upper. In addition, the left and right dimensions of the third yarn 9 used in the surface layer 8 are smaller than or equal to the left and right dimensions of the second yarn 4, which can prevent the third yarn 9 from crossing multiple second yarns 4 to form a fusion fixation. Instead, it is only fusion fixed with a single second yarn 4 or two second yarns 4, so as to avoid the third yarn 9 of the surface layer 8 from peeling off or opening the second yarn 4 below when being scratched by the outside world, thereby providing a certain protection for the reinforcement layer 3.

[0059] In another aspect of the string-reinforced shoe upper described herein, as a preferred embodiment, the cross-sectional shape of the second yarn 4 has a vertical dimension that is less than half of its horizontal dimension. In other words, the second yarn 4 has a relatively high degree of flatness, which increases the contact area between the second yarn 4 and the first yarn 2, the contact area between the second yarns 4, and the contact area between the second yarns 4 and the third yarn 9. This ensures a sufficiently strong connection between the reinforcing layer 3 and the base layer 1 and the surface layer 8, as well as a sufficiently strong connection between the multiple overlapping second yarns 4 in the reinforcing portion 5 of the reinforcing layer 3, thereby preventing the second yarns 4 in the reinforcing portion 5 from unraveling due to excessive tension.

[0060] Among them, the first yarn 2 and the second yarn 4 are both core-spun yarns, and the skin layers 6 of both are thermoplastic elastomer materials. The melting point of the core layer 7 of both is higher than that of the skin layer 6. The fusion of the first yarns 2 with each other, the fusion of the second yarn 4 with the first yarn 2, and the fusion of the second yarns 4 with each other are only the fusion of the skin layers 6 of the first yarn 2 and the second yarn 4 into one.

[0061] Specifically, when welding and fixing the yarns, it is necessary to first melt some of the yarns. After the yarns are melted, they will mix with each other and connect into one after cooling. The first yarn 2 and the second yarn 4 are core-spun yarns. The core-spun yarn is a yarn having a skin layer 6 and a core layer 7. In this embodiment, the skin layer 6 of the first yarn 2 and the second yarn 4 is made of a thermoplastic elastomer material. This material is easy to melt and has good connection performance. It also has good physical properties, such as elasticity, wear resistance, and aging resistance. As the skin layer 6 of the first yarn 2 and the second yarn 4, it can improve the overall physical properties of the shoe upper. At the same time, the core layer 7 of the first yarn 2 and the second yarn 4 is made of other materials with a higher melting point than the cortex 6. During welding and fixing, the melting temperature can be set to be higher than the melting point of the cortex 6 and lower than the melting point of the core layer 7. At this time, the cortex 6 of the first yarn 2 and the second yarn 4 will be melted, while the core layer 7 will not be affected, which reduces the difficulty of the welding and fixing procedure. At the same time, the core layer 7 can make the upper have better structural strength.

[0062] Depending on actual needs, the thermoplastic elastomer material used for the skin layer 6 of the first yarn 2 and the second yarn 4 can be polyurethane thermoplastic elastomer, polyester thermoplastic elastomer, polyamide thermoplastic elastomer, or polyethylene thermoplastic elastomer. The core layer 7 of the first yarn 2 and the second yarn 4 can be made of one or more of polyester, nylon, ultra-high molecular weight polyethylene, carbon fiber, and glass fiber. It should be noted that this embodiment does not limit the other physical properties of the specific materials used for the first yarn 2 and the second yarn 4. As long as the materials used can be classified as the materials listed above in the art, it is sufficient. It is also easy to understand that even the same type of material can exhibit different chemical and physical properties by adjusting its components, etc., but this does not affect the implementation of the base layer 1 and reinforcement layer 3 provided in this specification and claims.

[0063] In another aspect of the string-reinforced upper described herein, the cross-sectional shape of the second yarn 4 is characterized by a cortex 6 occupying 10%-80% of the cross-sectional area, and a core 7 occupying 20%-90%. Depending on the proportions, the second yarn 4 will obviously have different physical properties and welding performance. The impact on physical properties can be determined by those skilled in the art based on the specific materials selected. The impact on welding performance is important to note here. Specifically, when the cortex 6 occupies a larger area, the second yarn 4 will experience greater shape changes during welding because more of the cortex 6 material is melted, resulting in a larger contact area between the second yarn 4 and the other yarns during welding, thereby improving the connection strength between the yarns. When the core 7 occupies a larger area, the second yarn 4 can provide better structural strength through the core 7 material. Therefore, based on different needs, the proportions of the cortex 6 and core 7 can be adjusted to suit different application scenarios.

[0064] As a preferred embodiment, in this embodiment, the sheath 6 occupies 40% of the second yarn 4, and the core 7 occupies 60%. The second yarn 4 provided in this embodiment achieves a good balance between the connection strength of the yarn and the structural strength of the yarn itself.

[0065] In addition, the third yarn 9 also uses a core-spun yarn similar to the first yarn 2 and the second yarn 4, and the materials of its skin layer 6 and core layer 7 can also be selected from the materials used in the first yarn 2 and the second yarn 4, which will not be elaborated here.

[0066] In another aspect of the string-reinforced upper of the present specification, reference is made to Figure 3 or Figure 4 The cross-section of the first yarn 2 is circular, and its diameter is smaller than the left-right dimension of the second yarn 4. In other words, the first yarn 2 used in the base layer 1 is thinner than the second yarn 4. The second yarn 4 in the reinforcement layer 3 can simultaneously connect to multiple first yarns 2, which enables the base layer 1 to form a denser planar network structure and strengthens the connection between the reinforcement layer 3 and the base layer 1.

[0067] Alternatively, as another preferred embodiment, the cross-sectional shape of the first yarn 2 is flat, with the top and bottom dimensions being smaller than the left and right dimensions, and the left and right dimensions being smaller than the left and right dimensions of the second yarn 4. The flat shape of the first yarn 2 can reduce the thickness of the base layer 1 and increase the contact area between the first yarns 2, between the first yarn 2 and the second yarn 4, and between the first yarn 2 and the third yarn 9, thereby further improving the connection strength between the base layer 1, the reinforcing layer 3, and the surface layer 8. It can also improve the structural strength of the base layer 1 itself, and enhance the tensile strength and foot wrapping of the base layer 1.

[0068] As another part of the present invention, it also includes a method for preparing the above-mentioned string-reinforced shoe upper, which comprises:

[0069] Step 1: evenly laying the first yarns 2 along the warp and weft directions on the dissolvable base fabric, and fusing and fixing the first yarns 2 at their overlapping positions by heat pressing;

[0070] Step 2: dissolving the base fabric to obtain a base layer 1;

[0071] Step 3: The second yarn 4 with a flat cross-sectional shape whose upper and lower dimensions are smaller than the left and right dimensions is laid back and forth on the base layer 1, and multiple layers of the second yarn 4 are laid overlappingly at preset positions. The second yarn 4 and the first yarn 2 are then welded and fixed at the overlapping parts by hot pressing, and the second yarn 4 is also welded and fixed at the mutually staggered overlapping parts and between the multiple layers of the overlapping second yarn 4.

[0072] The base fabric is made of a water-soluble material. Typically, the material used can be polyvinyl alcohol (PVA), a high-molecular-weight polymer with excellent water solubility. After dissolving in water, PVA leaves no harmful residue, making it environmentally friendly and safe. Furthermore, the dissolution temperature of PVA is lower than the melting point of the thermoplastic elastomer of the core-spun yarn's cortex 6, so dissolving the base fabric will not affect the yarns in the string-reinforced upper. Furthermore, during processing, the base fabric possesses a certain mechanical strength, allowing it to serve as a foundation for laying the base layer 1.

[0073] In addition, the first yarn 2 and the second yarn 4 are both core-spun yarns, and the skin layers 6 of both are thermoplastic elastomer materials, and the melting points of the core layers 7 of both are higher than the skin layer 6; during hot pressing, the hot pressing temperature is higher than the melting point of the skin layer 6 of the first yarn 2 and the second yarn 4 and lower than the melting point of the core layer 7 of the first yarn 2 and the second yarn 4.

[0074] During the process of laying the first yarn 2 on the base fabric, the first yarn 2 can be drawn out and laid on the base fabric by a head device similar to a 3D printer. Of course, unlike a 3D printer, the first yarn 2 is not in a molten state when drawn out, but has a complete yarn structure. However, in order to ensure that the first yarn 2 maintains a good temporary connection with the base fabric during the laying process, the cortex 6 of the first yarn 2 can be kept at a higher temperature, so that the cortex 6 of the first yarn 2 has a certain viscosity to adhere to the base fabric. After the first yarn 2 is laid, pressure and heat are applied to the first yarn 2 through hot pressing to melt the cortex 6 of the first yarn 2. After the first yarn 2 cools, the base fabric is dissolved, and the desired base layer 1 is obtained.

[0075] After obtaining the base layer 1, the second yarn 4 is laid back and forth on the base layer 1 in a manner similar to the laying of the base layer 1, and multiple layers of the second yarn 4 are overlapped and laid at preset positions to form a corresponding reinforcement portion 5 on the reinforcement layer 3. Then, pressure is applied to the second yarn 4 and heat is applied by hot pressing to melt the second yarn 4 and the cortex 6 of the first yarn 2. After that, the second yarn 4 and the first yarn 2 are waited for to cool down, and the desired string-reinforced shoe upper can be obtained.

[0076] On this basis, a surface layer 8 may be added. The laying and fixing methods of the surface layer 8 are similar to those of the base layer 1 and the reinforcement layer 3, and will not be described in detail here.

[0077] As another aspect of the present invention, a shoe with a string-reinforced upper is also included. The shoe comprises a sole and the string-reinforced upper, wherein the upper is fixed to the sole.

[0078] Specifically, refer to Figure 1 In the upper's reinforcement layer 3, a portion of the second yarn 4 extends obliquely upward from the heel 10 to the shoelace eyelet 11, and multiple reinforcement portions 5 are provided along this portion of the second yarn 4. Furthermore, at the edge of the upper's reinforcement layer 3 where it connects to the sole, the second yarns 4 are closely arranged in parallel to form a reinforcement connection portion 12.

[0079] in, Figure 1 The figure shows a schematic diagram of a shoe upper in its unfolded state, representing the upper of a left shoe. The front side of the shoe upper requires a reinforcement portion 5 to enhance its structural strength. Therefore, in the upper's reinforcement layer 3, a portion of the second yarn 4 extends obliquely from the heel region 10 to the eyelet region 11. The heel region 10 refers to the area of ​​the upper corresponding to the heel of the foot, with its end generally near the rear end of the foot, while the eyelet region 11 refers to the area on the upper where the eyelets are located. Furthermore, the reinforcement portion 5 can be configured to extend a predetermined length along a predetermined direction. Specifically, the reinforcement portion 5 is formed by repeatedly stacking the second yarns 4 extending in the same direction. This increases the overall proportion of the reinforcement portion 5 and improves the structural strength of the upper. When applied to footwear requiring high lateral strength, such as basketball shoes, the strength provided in this region of the upper can effectively enhance athletic performance.

[0080] In addition, refer to Figure 1A reinforcing connection portion 12 is also provided in the reinforcing layer 3 of the upper. The reinforcing connection portion 12 is located at the edge where the upper and the sole are connected, which is actually the entire outer edge of the upper. This is because when the upper is fixed to the sole, its outer edge is inserted into the sole and forms a fixed relationship with the sole. The reinforcing connection portion 12 of the upper is formed by the second yarns 4 being arranged in parallel and tightly. That is to say, at the edge of the upper, the second yarns 4 in the reinforcing layer 3 can be repeatedly routed around the edge of the upper, and the second yarns 4 at the back are closely attached to the second yarns 4 at the front, thereby forming a plurality of tightly arranged second yarns 4 at the edge of the upper. Subsequently, the reinforcing connection portion 12 can be formed at the edge of the upper by heat pressing, thereby improving the connection strength between the upper and the sole and preventing the upper from being disconnected from the sole when pulled.

[0081] The above description and embodiments are intended to explain the scope of protection of the present invention, but do not constitute a limitation thereto. Modifications, equivalent substitutions, or other improvements to the embodiments of the present invention or portions thereof that can be obtained by a person of ordinary skill in the art through logical analysis, reasoning, or limited experimentation based on the teachings of the present invention or the above embodiments, combined with common knowledge, ordinary technical knowledge in the field, and / or prior art, should all be included within the scope of protection of the present invention.

Claims

1. A string-reinforced shoe upper, characterized in that: include: A base layer (1) comprising one or more first yarns (2) uniformly laid in the warp and weft directions and fused and fixed at overlapping locations; a reinforcing layer (3) comprising one or more second yarns (4) laid back and forth on the base layer (1); the second yarns (4) being fused and fixed to the first yarns (2) of the base layer (1), and the second yarns (4) being fused and fixed to each other at overlapping locations where the second yarns (4) are interlaced with each other; the reinforcing layer (3) having a plurality of reinforcing portions (5) formed by overlapping and laying the second yarns (4), and adjacent second yarns (4) in the reinforcing portions (5) being fused and fixed to each other; The cross-sectional shape of the second yarn (4) is a flat shape with the upper and lower dimensions being smaller than the left and right dimensions.

2. The string-reinforced shoe upper according to claim 1, wherein: In the cross-sectional shape of the second yarn (4), its upper and lower dimensions are smaller than half of its left and right dimensions.

3. The string-reinforced shoe upper according to claim 1, wherein: The first yarn (2) and the second yarn (4) are both core-spun yarns, and the skin layers (6) of both are made of thermoplastic elastomer materials, and the melting points of the core layers (7) of both are higher than that of the skin layer (6).

4. The string-reinforced shoe upper according to claim 3, wherein: The fusion of the first yarns (2) with each other, the fusion of the second yarn (4) with the first yarn (2), and the fusion of the second yarns (4) with each other are all just the fusion of the skin layers (6) of the first yarn (2) and the second yarn (4) into one.

5. The string-reinforced shoe upper according to claim 3, wherein: The thermoplastic elastomer material used in the skin layer (6) of the first yarn (2) and the second yarn (4) is polyurethane thermoplastic elastomer, polyester thermoplastic elastomer, polyamide thermoplastic elastomer or polyethylene thermoplastic elastomer.

6. The string-reinforced shoe upper according to claim 3, wherein: The core layer (7) of the first yarn (2) and the second yarn (4) is made of one or more of polyester, nylon, ultra-high molecular weight polyethylene, carbon fiber, and glass fiber.

7. The string-reinforced shoe upper according to claim 3, wherein: In the cross-sectional shape of the second yarn (4), calculated by area percentage, the portion occupied by the skin layer (6) is 10%-80%, and the portion occupied by the core layer (7) is 20%-90%.

8. The string-reinforced shoe upper according to claim 1, wherein: The cross-sectional shape of the first yarn (2) is circular, and its diameter is smaller than the left-right dimension of the second yarn (4).

9. The string-reinforced shoe upper according to claim 1, wherein: The cross-sectional shape of the first yarn (2) is a flat shape with its upper and lower dimensions smaller than its left and right dimensions, and its left and right dimensions are smaller than those of the second yarn (4).

10. The string-reinforced shoe upper according to claim 1, wherein: It also includes a surface layer (8), which is formed by one or more third yarns (9) laid back and forth on the reinforcing layer (3); the third yarns (9) are welded and fixed to the second yarns (4) of the reinforcing layer (3) and / or to the first yarns (2) of the base layer (1), and the third yarns (9) are welded and fixed to each other at the overlapping parts where the third yarns (9) are intertwined with each other.

11. The string-reinforced shoe upper according to claim 10, wherein: The cross-sectional shape of the third yarn (9) is a flat shape with its upper and lower dimensions smaller than its left and right dimensions, and its left and right dimensions are smaller than or equal to those of the second yarn (4).

12. The string-reinforced shoe upper according to claim 1, wherein: The base layer (1) further comprises first yarns (2) uniformly laid in an oblique direction at an angle of 45° to the warp and weft directions respectively, and the obliquely laid first yarns (2) are welded to the first yarns (2) laid in the warp and weft directions at overlapping locations.

13. A shoe with a string-reinforced upper, comprising a sole, characterized in that: It also includes a string-reinforced upper as described in any one of claims 1 to 12, wherein the upper is fixed to the sole.

14. The shoe with a string-reinforced upper according to claim 13, wherein: In the reinforcing layer (3) of the shoe upper, a portion of the second yarn (4) extends obliquely upward from the heel portion (10) to the shoelace hole portion (11), and a plurality of reinforcing portions (5) are provided on the portion of the second yarn (4).

15. The shoe with a string-reinforced upper as claimed in claim 14, wherein: At the edge of the reinforcing layer (3) of the upper connected to the sole, the second yarns (4) are closely arranged in parallel to form a reinforcing connection portion (12).

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