Quasi-warp-knitted bonded net and net roll structure

Abstract

The present invention relates to the field of net knitting processing. Disclosed are a quasi-warp-knitted bonded net and a net roll structure. Warp yarns used in the quasi-warp-knitted bonded net of the present invention comprise first yarns and second yarns that are on the same warp direction line, weft yarns reciprocate back and forth between the warp yarns in a warp direction, the weft yarns are arranged between the first yarns and the second yarns, and the first yarns and the second yarns are bonded together on two sides of connection points. In the solution, there is no loop structure formed by the warp yarns, which saves more materials while ensuring the strength. Moreover, the weft yarns are sandwiched between the two yarns, making it difficult for the warp yarns to separate from the weft yarns, and the bonded net is not easily damaged.

Description

A type of warp-knitted bonding mesh and its roll structure Technical Field

[0001] This invention relates to the field of mesh processing technology, and more specifically, to a type of warp-knitted bonding mesh and mesh roll structure. Background Technology

[0002] Most current baling nets are woven using warp knitting machines. Unlike ordinary woven nets, baling nets bear greater forces along the warp direction during use, while the weft threads only need to be connected. Therefore, the structural characteristic of baling nets is a larger mesh size, requiring a certain load-bearing strength. Under a certain strength requirement, minimizing material usage becomes the biggest profit point.

[0003] Figure 1 shows a typical baling net structure currently on the market, consisting of several parallel warp chains. Each warp chain is composed of links formed by loops of warp yarns wound together. Weft threads are placed between adjacent warp chains along the weft direction, thus forming a mesh structure. Because it is a warp-knitted structure, the loops within each warp chain, as well as the weft threads and loops, form an interlocking structure. Under tension, the mutual pulling between these loops causes significant breakage and considerable material waste.

[0004] Some improved designs employ a baling net structure with a lining warp, such as the applicant's prior improvement, patent number 202211046218.1. This design adds a lining warp warp that is not wound around the original structure, thereby increasing strength. While this structure reduces material usage while maintaining strength, the winding process still requires a significant amount of material.

[0005] To reduce material usage, existing flat mesh structures can be referenced, such as the mesh fabric disclosed in patent 201210372860.9. This structure involves laying the warp and weft threads flat and bonding them together. Although the warp threads are not looped or knotted, this flat structure is difficult to meet strength requirements because the regular rectangular mesh structure is prone to damage at the heat-pressed or bonded joints due to uneven deformation when subjected to warp stress. Adding more weft threads does not necessarily save material.

[0006] Furthermore, the structure in patent 201210372860.9 involves laying the warp and weft threads flat in two perpendicular directions, meaning the yarns are first laid out from left to right in one direction before being bonded. Compared to a loop-type weaving process, this is less efficient. Therefore, this type of bonded weaving is rarely used in binding meshes. Summary of the Invention

[0007] 1. The technical problem that the invention aims to solve

[0008] The problem this invention aims to solve is: how to reduce material usage and lower costs while ensuring the strength of the woven mesh. It provides a warp-knitted bonded mesh and a mesh roll structure. This solution employs a double-layer bonded structure, which improves load-bearing strength without weaving loops, while saving materials and reducing costs.

[0009] 2. Technical Solution

[0010] To achieve the above objectives, the technical solution provided by the present invention is as follows:

[0011] The present invention provides a type of warp-knitted bonding mesh, comprising multiple warp yarns arranged in parallel along the warp direction, wherein the warp yarns include a first yarn and a second yarn located on the same warp line;

[0012] Between adjacent or spaced warp yarns, there is a weft yarn that folds back and forth along the warp direction. This weft yarn is placed between the first yarn and the second yarn. On both sides of the connection point between the warp and the weft yarn, the first yarn and the second yarn form a continuous hot-pressed composite section.

[0013] Furthermore, in the warp direction, the contact surfaces of the first and second yarns are heat-pressed together, and the combined warp yarns have a flat surface.

[0014] Furthermore, the weft yarn is folded back between the warp yarns, forming a folding line at the change of direction. The folding line and the warp yarn form two connection points, and the first and second yarns between the two connection points are hot-pressed together.

[0015] Furthermore, the warp or weft yarn is made of polyethylene, polypropylene, or a mixture of polyethylene and polypropylene as monofilament yarn or membrane yarn.

[0016] Furthermore, the denier of the first yarn and the second yarn is 350 to 650 denier; the denier of the weft yarn is 150 to 350 denier.

[0017] Furthermore, the basis weight of the bonding mesh is 4.0–12 g / m². 2 .

[0018] Furthermore, the tensile strength of the first yarn and the second yarn is 25-38N, and the tensile strength of the warp yarn is 1.5-3.0 times that of one of the yarns.

[0019] Furthermore, the width of the first yarn and the second yarn is 0.8 to 5 mm.

[0020] Furthermore, the width difference between the first yarn and the second yarn is 0 to 2.0m.

[0021] Furthermore, auxiliary yarns are provided between adjacent warp yarns. The auxiliary yarns are arranged parallel to the warp yarns and are heat-pressed together with the weft yarns.

[0022] Furthermore, the auxiliary yarn is located on one side of the weft yarn; or:

[0023] The auxiliary yarn includes an upper auxiliary yarn and a lower auxiliary yarn that are heat-pressed together. The weft yarn is located between the upper auxiliary yarn and the lower auxiliary yarn. On both sides of the connection point between the auxiliary yarn and the weft yarn, the upper auxiliary yarn and the lower auxiliary yarn form a continuous heat-pressed composite segment.

[0024] A type of warp-knitted bonding mesh of the present invention includes:

[0025] Warp yarns, multiple warp yarns arranged in parallel along the warp direction, and the warp yarns include a first yarn and a second yarn located on the same warp line, the contact surfaces of the first yarn and the second yarn are heat-pressed together;

[0026] The weft yarn is folded back and forth between adjacent or spaced warp yarns. At the connection point between the weft yarn and the warp yarn, at least one of the upper or lower surfaces of the weft yarn is hot-pressed together with the first or second yarn.

[0027] The denier of the first and second yarns is 200 to 580 denier; the denier of the weft yarn is 100 to 350 denier.

[0028] Furthermore, the breaking tensile strength of the warp yarn is 45%-80%.

[0029] Furthermore, the weft yarns of different warp yarns are arranged parallel to each other along the same warp length.

[0030] Furthermore, the widths of the first yarn and the second yarn are 0.8–3.8 mm; the width difference between the first yarn and the second yarn is 0–1.5 mm.

[0031] Furthermore, the weft yarn is folded back between the warp yarns, forming a folding line at the change of direction. The folding line and the warp yarn form two connection points, and the distance between the two connection points is 3-40mm.

[0032] Furthermore, the difference between the length of the zigzag line and the distance between its two connection points is the redundancy length, and the percentage of the redundancy length relative to the distance between the two connection points is no more than 20%.

[0033] The present invention provides a warp-knitted bonding mesh comprising multiple warp yarns arranged parallel along the warp direction, and weft yarns folding back and forth between the warp yarns. The warp yarns include a first yarn and a second yarn located on the same warp line. At the connection point between the warp and the weft yarns, the first yarn and the second yarn form a bonding composite section, thereby fixing the weft yarn between the first yarn and the second yarn.

[0034] Furthermore, the weft yarns are arranged in parallel along the same warp length segment.

[0035] Furthermore, the warp yarn spacing is 20–160 mm; the basis weight of the bonding mesh is 4.5–10 g / m². 2 .

[0036] Alternatively, the warp yarn spacing is 15–50 mm; the bonding mesh weight is 4.5–10 g / m². 2 Furthermore, it also includes a spool on which the adhesive mesh is wound.

[0037] Furthermore, the first and second yarns are combined under the same tension to form a straight warp.

[0038] A web roll includes a spool and an adhesive net, the adhesive net being wound on the spool; the length of the adhesive net is 3600-8000m; the diameter of the web roll formed on the spool is 20-35cm; the weight of the web roll is 25-56kg; the adhesive net includes multiple warp yarns arranged parallel along the warp direction, and weft yarns folding back and forth between the warp yarns, the warp yarns and weft yarns being connected by an adhesive method.

[0039] Another type of web roll is provided, comprising a spool and an adhesive web, the adhesive web being wound on the spool; the length of the adhesive web is 3000-8000m; the diameter of the web roll formed on the spool is 20-35cm; the weight of the web roll is 25-56kg; the adhesive web comprises multiple warp yarns arranged parallel along the warp direction, and weft yarns folding back and forth between the warp yarns, the warp yarns and weft yarns being connected by an adhesive method.

[0040] In some embodiments, the bonding mesh adopts the structure of the bonding mesh described above. It can form a three-layer structure, with the upper layer being warp yarns, the middle layer being weft yarns, and the lower layer being warp yarns. The upper and lower warp yarns are bonded together, thereby preventing the weft yarns from separating from the warp yarns.

[0041] The provided mesh roll includes a spool and an adhesive mesh wound on the spool, the adhesive mesh including a plurality of warp yarns arranged in parallel along the warp direction, and the warp yarns including a first yarn and a second yarn located on the same warp line;

[0042] Between adjacent or spaced warp yarns, there is a weft yarn that folds back and forth along the warp direction. This weft yarn is placed between the first yarn and the second yarn. On both sides of the connection point between the warp yarn and the weft yarn, the first yarn and the second yarn form a continuous hot-pressed composite section.

[0043] The composite bonding mesh has a flat surface structure, so that the diameter of the mesh roll formed within a length of 3000m is no greater than 23cm; and the diameter of the mesh roll formed within a length of 5000m is no greater than 24.5cm.

[0044] Furthermore, the denier of the first yarn and the second yarn is 350 to 650 denier.

[0045] Furthermore, the net is used for bundling and packaging, wherein the warp yarn spacing is 20–26 mm, and the basis weight of the bonding net is 4.5–6.5 g / m². 2 .

[0046] Furthermore, the bonding mesh has the structure of any of the aforementioned bonding meshes.

[0047] 3. Beneficial effects

[0048] Compared with the prior art, the technical solution provided by this invention has the following advantages:

[0049] The warp-knitted bonding mesh of the present invention uses warp yarns including a first yarn and a second yarn located on the same warp direction. The weft yarn is folded back and forth between the warp yarns along the warp direction and is positioned between the first yarn and the second yarn. At the connection point, the first yarn and the second yarn are combined together. This design eliminates the structure of warp yarn loops, saving materials while ensuring strength. Furthermore, since the weft yarn is held between the two yarns, the warp yarn is difficult to separate from the weft yarn and is less prone to damage. Attached Figure Description

[0050] Figure 1 shows a woven mesh formed by warp knitting; in this method, the warp yarns repeatedly loop in the radial direction, and the weft yarns are connected within the loops.

[0051] Figure 2 shows a weft-like knitting method where the weft thread passes through the upper and lower warp yarns.

[0052] Figure 3 is a schematic diagram of one implementation scheme in which weft yarns are intermittently arranged between adjacent warp yarns; the weft yarns are arranged according to the same pattern.

[0053] Figure 4 is a schematic diagram of the connection structure of the first warp yarn, the second warp yarn, and the weft yarn. It can be seen that the weft yarn is sandwiched between the first warp yarn and the second warp yarn.

[0054] Figure 5 shows another implementation structure, which includes auxiliary yarns located between adjacent warp yarns to enhance the connection with the weft yarns;

[0055] Figure 6 illustrates different implementation structures of the weft yarn. In this embodiment, the spacing of the warp yarns is not completely equal, and the shapes formed by the weft yarns are different after moving at the same spacing.

[0056] Figure 7 shows a schematic diagram of one type of warp yarn composite method;

[0057] Figure 8 is a schematic diagram of one implementation method of the auxiliary yarn;

[0058] Figure 9 is a schematic diagram of the structure in which the weft yarn is folded back between the spaced warp yarns;

[0059] Figure 10 is a schematic diagram of one usage state of the bonding mesh.

[0060] The labels in the diagram are explained as follows: 1. Warp yarn; 11. First yarn; 12. Second yarn; 2. Weft yarn; 3. Turnback yarn; 4. Auxiliary yarn; 41. Upper auxiliary yarn; 42. Lower auxiliary yarn. Detailed Implementation

[0061] To further understand the content of this invention, a detailed description of the invention will be provided in conjunction with the accompanying drawings and embodiments.

[0062] The structures, proportions, and sizes illustrated in the accompanying drawings are merely for illustrative purposes and to aid those skilled in the art in understanding and reading the invention. They are not intended to limit the scope of the invention and therefore have no substantial technical significance. Any modifications to the structure, changes in proportions, or adjustments to size, without affecting the effectiveness and purpose of the invention, should still fall within the scope of the technical content disclosed herein. Furthermore, terms such as "upper," "lower," "left," "right," and "middle" used in this specification are merely for clarity and not intended to limit the scope of implementation. Changes or adjustments to their relative relationships, without substantially altering the technical content, should also be considered within the scope of the invention's implementation.

[0063] Figure 1 is a schematic diagram of an existing straw baling net using a weaving process, in which the warp threads are repeatedly woven in loops along the warp direction and connected together by the weft threads.

[0064] Figure 1 shows a warp knitting method, where the warp yarns are looped around and fixed to the weft yarns. This method uses one or more sets of parallel yarns that are simultaneously looped on all the working needles of the machine in the warp direction to form a knitted fabric. The characteristic of warp knitting is the use of one or more sets of parallel yarns that are simultaneously looped on all the working needles of the machine in the warp direction to form the fabric. Due to the repeated looping, warp knitting uses more material in the warp direction.

[0065] Figure 2 illustrates the structure formed by the beat-up weft knitting method, during which the weft and warp yarns move relative to each other. Fabric formation is not completed after a single beat-up; relative movement of the weft and warp yarns continues in the fabric formation area some distance from the weft weir. To avoid this relative movement, some designs use bonding at the weft yarn connection points to improve connection stability.

[0066] Figure 2 shows a schematic diagram of a mesh structure with perpendicularly distributed meridians and parallels. This structure can only be implemented on larger equipment, is inefficient, and is prone to cracking, making it unsuitable for meshes with high load-bearing capacity in the warp direction. Since this mesh structure is a relatively mature technology with stable production, the problem this application aims to solve is how to further reduce material usage and save costs while maintaining strength.

[0067] Figure 3 shows a warp-knitted bonding mesh. It can be seen that the warp direction is perpendicular to the weft direction. Multiple parallel warp yarns 1 are distributed in the warp direction. Adjacent warp yarns 1 have reciprocating weft yarns 2. While reciprocating, the weft yarns 2 extend along the warp direction, connecting two adjacent warp yarns 1 together.

[0068] This embodiment provides a warp-knitted bonding mesh, one implementation structure of which is shown in Figure 3. It includes multiple warp yarns 1 arranged in parallel along the warp direction, and weft yarns 2 that fold back and forth along the warp direction between adjacent warp yarns 1, similar to a sawtooth structure, which are mainly used to connect the warp yarns 1 and maintain the integrity of the mesh surface.

[0069] Referring to Figure 4, the warp yarn 1 includes a first yarn 11 and a second yarn 12 located on the same warp line, and the weft yarn 2 is positioned between the first yarn 11 and the second yarn 12; on both sides of the connection point between the warp yarn 1 and the weft yarn 2, the first yarn 11 and the second yarn 12 form a continuous hot-pressed composite section. The continuous hot-pressed composite section referred to here can be shown in Figure 7, where the radial dashed line segment represents the uncomposite end, and the non-dashed line portion represents the hot-pressed composite portion.

[0070] The first yarn 11 and the second yarn 12 are combined on both sides of the connection point, so that the weft yarn 2 is sandwiched between the first yarn 11 and the second yarn 12, thereby improving the overall strength. By combining the first yarn 11 and the second yarn 12, more connection points can be formed, and there is also a certain strength in the direction perpendicular to the mesh surface, making it less prone to peeling.

[0071] Compared to traditional warp knitting, this method eliminates the need for repeated looping of the warp yarns, thus saving significant amounts of material. Furthermore, it avoids the reduction in strength caused by looping. Compared to beat-up knitting, the weft yarns move only within a small range in the horizontal direction under static load. The width in the weft direction is controlled by multiple weft needles, allowing for the selection of the number of warp yarns based on width requirements. Compared to beat-up knitting, the process is simpler, less expensive, and faster, achieving similar efficiency to warp knitting while reducing material usage.

[0072] While bonding is used in existing technologies for mesh fabrication, it's mostly employed in conjunction with weft insertion to further enhance the connection. The most conceivable approach is to directly utilize heat pressing or bonding instead of weaving. For bound mesh fabrics, the main stress is borne in the warp direction, with the weft yarn merely serving a simple connecting role. Therefore, the stress is primarily concentrated in the warp direction. If only bonding is used, the warp and weft yarns are connected on one side. However, when the warp yarns are stressed, their deformation causes the distance between the two warp yarns to increase or decrease. This change can lead to separation at the warp-weft junction, meaning warp 1 can easily detach from weft 2. This is why existing mesh fabrics employ weaving or weft insertion methods—primarily to ensure connection strength and prevent separation.

[0073] In this implementation scheme, to address the issue of peeling, a top-to-bottom bonding method is used for fixation. The connection point of the weft yarn 2 is confined between the hot-pressed composite sections, making it difficult to detach from the warp yarn 1. This ensures that the weft yarn 2 will not be easily peeled off and damage the integrity of the mesh. It is worth noting that, compared to simply setting a single, high-strength warp yarn 1 on one side of the weft yarn 2, although this method results in a slight reduction in warp tensile strength and is more complex in terms of process, it significantly improves the connection strength between the weft yarn and the warp yarn 2 in the direction perpendicular to the mesh surface.

[0074] In one embodiment, the hot-pressed composite section can be a composite section formed at a certain distance on both sides of the connection point, such as 1-2 cm. The weft yarn 2 is confined within the hot-pressed composite section and will not move along the warp direction. The hot-pressed composite section can be discontinuous at non-connection point positions, as shown in Figure 7. In Figure 7, the dashed lines in the warp direction represent non-composite connection parts, and the dashed lines represent composite parts.

[0075] In another embodiment, the contact surfaces of the first yarn 11 and the second yarn 12 are heat-pressed together in the warp direction, meaning the first yarn 11 and the second yarn 12 are integrally combined, which can traverse the warp direction. The two yarns combined together can simultaneously bear the load and have higher strength. Furthermore, the combined warp yarn 1 has a flat surface. The first yarn 11 and the second yarn 12 are generally combined under the same tension, and the first yarn 11 and the second yarn 12 do not undergo significant deformation during tension, thus allowing the two yarns to be combined under the same stretching conditions, resulting in a unified effect after combination.

[0076] If one yarn has a certain elastic deformation during the composite process, while the other yarn is in a non-stretched state, the composite warp yarn will have a certain degree of bending and will not be able to withstand the load under the same stretching conditions, making it difficult to achieve maximum strength performance.

[0077] For ease of processing, the weft yarn 2 is folded back between the warp yarns 1, forming a folding line 3 at the change of direction. The folding line 3 and the warp yarn 1 form two connection points. Between the two connection points, the first yarn 11 and the second yarn 12 are hot-pressed together, thereby preventing the folding line 3 from separating from the first yarn 11 and the second yarn 12.

[0078] The warp yarn 1 or weft yarn 2 used can be made of polyethylene, polypropylene, or a mixture of polyethylene and polypropylene, either as monofilament yarn or membrane yarn. Other materials can also be used in other embodiments for manufacturing meshes for different purposes; there are no specific limitations.

[0079] In different implementations, the denier of the two warp yarns 1 can range from 200 to 800 denier. When it is close to 200 denier, it is used for situations where the warp bearing capacity requirement is lower, and when it is around 700 denier, it can be used for situations where the stress strength is higher. The weft yarn 2 mainly plays a connecting role, and its denier can range from 100 to 500 denier.

[0080] Furthermore, the denier of the first yarn 11 and the second yarn 12 is 350–650 denier, for example, 400 denier and 520 denier; the denier of the weft yarn 2 is 150–350 denier, for example, 200 denier and 280 denier. When used for baling netting, the weight of the binding netting is 4.0–12 g / m². 2 For example, 5g / m 2 7g / m 2 9g / m 2 The spacing between warp yarns 1 and weft yarns 2 can be adjusted to meet the needs of different situations. In some implementations, the spacing between warp yarns 1 is 20-100mm, such as 35mm, 56mm, or 80mm.

[0081] In some feasible embodiments, the tensile strength of the first yarn 11 and the second yarn 12 is 20–50 N, and the tensile strength of the warp yarn 1 is 1.5–3.0 times that of one of the yarns. After the first yarn 11 and the second yarn 12 are combined, the strength of the warp yarn 1 is limited, thereby allowing for the selection of suitable warp yarn 1 and weft yarn 2 materials.

[0082] Optionally, the widths of the first yarn 11 and the second yarn 12 are 0.8–3.5 mm, for example, 1.2 mm and 2.5 mm. Within this range, they are suitable for binding. When the width is 2.5–8 mm, it can be used for shade nets, etc. The widths of the first yarn 11 and the second yarn 12 can be the same or different. To increase the strength perpendicular to the net surface, the difference between the first yarn 11 and the second yarn 12 can generally be selected to be a small range. For example, in some embodiments, the width difference between the first yarn 11 and the second yarn 12 is no greater than 1.5 mm. A small width difference results in a large contact area between the two, leading to high connection strength.

[0083] In other embodiments, referring to Figure 5, auxiliary yarns 4 are provided between adjacent warp yarns 1. The auxiliary yarns 4 are arranged parallel to the warp yarns 1 and are heat-pressed together with the weft yarns 2. In some applications, the addition of auxiliary yarns 4 can increase the mesh density and improve the leak-proof effect. In implementation, the auxiliary yarns 4 can be located on one side of the weft yarns 2; they can be provided between only some adjacent warp yarns 1, or they can be provided between all adjacent warp yarns 1.

[0084] Referring to Figure 8, in one embodiment, the auxiliary yarn 4 includes an upper auxiliary yarn 41 and a lower auxiliary yarn 42 that are heat-pressed together, with the weft yarn 2 located between the upper auxiliary yarn 41 and the lower auxiliary yarn 42. It should be noted that the auxiliary yarn and the warp yarn may be identical in material and weight per unit area; the difference lies in that the warp yarn is the yarn where the weft yarn bends and connects, while the weft yarn and the auxiliary yarn are only connected in a straight line, and the weft yarn does not fold back at the auxiliary yarn.

[0085] Auxiliary yarns 4 can be placed in the middle area between two warp yarns 1 to increase strength. Multiple auxiliary yarns 4 can also be placed close to the warp yarns 1. The material of the auxiliary yarns 4 can be polyethylene, polypropylene, or a mixture of polyethylene and polypropylene made of monofilament yarn or membrane yarn, or other monofilament yarn or membrane yarn materials. In some embodiments, the auxiliary yarns 4 are made of the same material as the warp yarns 1 and have the same denier.

[0086] In another embodiment, unlike the previous one, the weft yarn 2 folds back and forth between spaced warp yarns 1, and each warp yarn 1 has a weft yarn fold. Here, "spaced" means that there are other warp yarns between them, as opposed to an adjacent relationship. Take a spaced-out warp yarn as an example.

[0087] As shown in Figure 9, in one conceivable implementation, warp yarns 1a and 1c form an angle 3a with weft yarn A; warp yarn 1b creates a gap between warp yarns 1a and 1c, and intersects with weft yarn 2. Simultaneously, warp yarn 1b forms an angle 3b with weft yarn B. The number of warp yarns spaced between the same weft yarn folds does not exceed two, avoiding a large edge width that could lead to easy edge breakage. In practical applications, it can also be implemented in conjunction with auxiliary yarns.

[0088] Another embodiment provides a warp-knitted bonding mesh, comprising warp yarns 1 and weft yarns 2. Multiple warp yarns 1 are arranged parallel to each other along the warp direction, and each warp yarn 1 includes a first yarn 11 and a second yarn 12 located on the same warp line. The contact surfaces of the first yarn 11 and the second yarn 12 are heat-pressed together. The weft yarns 2 are folded back and forth between adjacent warp yarns 1. At the connection point between the weft yarn 2 and the warp yarn 1, the upper surface of the weft yarn 2 is heat-pressed together with the first yarn 11, and the lower surface of the weft yarn 2 is heat-pressed together with the second yarn 12.

[0089] The phrase "on the same warp line" does not require the first yarn 11 and the second yarn 12 to completely overlap; it is sufficient that the two have a composite surface of a certain width.

[0090] More specifically, the denier of the first yarn 11 and the second yarn 12 is 180 denier, and the denier of the weft yarn 2 is 120 denier; in a wide-width bonding net, the denier of the first yarn 11 and the second yarn 12 is 520 denier, and the denier of the weft yarn 2 is 300 denier. The denier of the first yarn 11 and the second yarn 12 can be controlled between 200 and 580 denier, and the denier of the weft yarn 2 can be between 100 and 350 denier.

[0091] Furthermore, the breaking elongation of warp yarn 1 is controlled within the range of 45%–80%, such as 45%–50%, 50%–65%, or 70%–80%. Elongation is an important indicator for measuring the plastic deformation capacity of a material. Since the warp direction must bear tensile force, a certain elongation makes the warp yarn less prone to breakage. Higher elongation is also possible, but this will reduce strength. When binding rigid materials, warp yarns with relatively low elongation can be selected, while warp yarns with relatively high elongation can be selected for lighter and softer materials.

[0092] Referring to Figure 3, in some embodiments, the weft yarns 2 of different warp yarns 1 are arranged parallel to each other along the same warp length. Using this method, during processing, the weft yarn 2 feed needles swing left and right simultaneously, making the requirements for the driver program relatively simple.

[0093] In practice, multiple sets of comb needles can be used to form different weft yarn paths. For example, if the warp yarns 1 are distributed in the form of large and small spacing intervals, as shown in Figure 6, b1 is the large spacing and b2 is the small spacing. Then the weft yarns in the large spacing b1 and the weft yarns in the small spacing b2 do not need to be parallel.

[0094] In terms of material dimensions, the widths of the first yarn 11 and the second yarn 12 are 0.8–3.5 mm; for example, the first yarn 11 is 3.2 mm and the second yarn 12 is 1.5 mm; or the first yarn 11 is 2.5 mm and the second yarn 12 is 2.5 mm; or the first yarn 11 is 2.2 mm and the second yarn 12 is 1.3 mm. The width difference between the first yarn 11 and the second yarn 12 can be controlled within 1.5 mm.

[0095] The weft yarn 2 folds back between the warp yarns 1, forming a fold-back line 3 at the change of direction. Fold-back line 3 and warp yarn 1 form two connection points. If used as a shade net, a denser spacing is required, such as 0.5-3mm; when used as a straw baling net, the spacing can be larger. Generally, the distance between the two connection points can be 3-60mm, such as 5mm, 12mm, 23mm, 33mm, or 40mm.

[0096] In combination with the above embodiments, the difference between the length of the turnaround line 3 and the distance between its two connection points is the redundant length. The percentage of this redundant length relative to the distance between the two connection points is no more than 20%, such as 1.5%, 2.2%, or 8%. This redundant length is formed to maintain continuous processing and does not have the function of increasing strength. If the redundant length is large, it will still waste a lot of material.

[0097] In conjunction with the above embodiments, as an alternative, a warp-knitted bonding mesh is provided, in which the first yarn 11 and the second yarn 12 are bonded together. Specifically, the bonding mesh includes multiple warp yarns 1 arranged parallel along the warp direction, and weft yarns 2 that fold back and forth between the warp yarns 1. The warp yarns 1 include a first yarn 11 and a second yarn 12 located on the same warp line; on both sides of the connection point between the warp yarns 1 and the weft yarns 2, the first yarn 11 and the second yarn 12 form a bonded composite section, so that the weft yarn 2 is fixed between the first yarn 11 and the second yarn 12.

[0098] Besides hot-press bonding, adhesive bonding can also be used. That is, the connecting surfaces of the first yarn 11 and the second yarn 12 are coated with adhesive, and their contact surfaces are bonded together. Simultaneously, the weft yarn 2 is also fixed between the first yarn 11 and the second yarn 12 by adhesive bonding. During bonding, the first yarn 11 and the second yarn 12 are bonded together under the same tension, forming a straight warp yarn 1. Both can provide tension simultaneously, achieving the composite effect. For the weft yarn 2, the weft yarns are arranged parallel to each other along the same warp length. The spacing of the warp yarns 1 can be 20mm, 30mm, 35mm, 60mm, 120mm, or 180mm; the weight of the bonding mesh is 4.5–10 g / m². 2 Compared to hot-pressing, adhesive bonding increases weight and incurs additional raw material costs.

[0099] In traditional bonded meshes, including hot-pressed and adhesive bonding methods, the entire mesh is still processed using a weaving approach. This involves interlacing warp yarns between weft yarns, or having one warp yarn above a weft yarn and another warp yarn below it in a staggered arrangement. During lamination, the mesh is fixed only at the connection points by hot pressing or adhesive bonding, relying on the interlaced weaving structure to bear the force perpendicular to the mesh surface.

[0100] Referring to Figure 10, the mesh roll structure provided in this embodiment includes a roll and an adhesive mesh, wherein the adhesive mesh is wound on the roll; the length of the adhesive mesh is 3600-8000m; the diameter D of the mesh roll formed on the roll is 20-35cm; the weight of the mesh roll is 25-56kg; and its width W can be adjusted as needed during processing. The adhesive mesh includes multiple warp yarns 1 arranged parallel along the warp direction, and weft yarns 2 that fold back and forth between the warp yarns 1, wherein the warp yarns 1 and the weft yarns 2 are connected by an adhesive method.

[0101] In this wire roll structure, the bonding mesh used adopts the structure obtained by the aforementioned embodiments or a combination thereof.

[0102] One possible implementation of the web roll includes a spool and an adhesive web wound around the spool. The adhesive web comprises multiple warp yarns 1 arranged parallel along the warp direction, with each warp yarn 1 including a first yarn 11 and a second yarn 12 located on the same warp line. Weft yarns 2 are folded back and forth along the warp direction and positioned between the first yarn 11 and the second yarn 12. The denier of the first yarn 11 and the second yarn 12 can be set to 350–480 denier, while the denier of the weft yarn 2 is less than 350 denier. At the connection point between the warp yarns 1 and the weft yarns 2, the first yarn 11 and the second yarn 12 form a continuous hot-pressed composite section. Because the first yarn 11 and the second yarn 12 are directly composited face-to-face, the resulting adhesive web has a flat surface structure, resulting in a smaller thickness. This allows the diameter of the web roll to be no greater than 23 cm within a 3000 m length, and no greater than 24.5 cm within a 5000 m length. This achieves a greater length for the same roll diameter. The above comparison of roll diameters is made when the roll diameter is in the range of 90 to 98 mm. When making the measurement, as long as the outer diameter of the roll is in the range of 90 to 98 mm, it is applicable to the comparison of the roll diameter in the above length range.

[0103] To ensure suitable tensile strength and basis weight, when using this net for bundling and packaging, the warp yarn spacing is 20–26 mm, and the basis weight of the bonding net is 4.5–6.5 g / m². 2 Measurements were taken at a width of 1.23m, and there were approximately 60 warp yarns with a tensile strength exceeding 300kg.

[0104] In other embodiments, the bonding net can be combined with the foregoing content. For the existing structure of the aforementioned binding net, it can be combined into the net roll to achieve different implementation schemes. To avoid repetition, it will not be described in detail here.

[0105] The warp-knitted bonding mesh provided in this application divides the warp yarns into a first yarn and a second yarn. The weft yarn folds back and forth between the warp yarns along the warp direction and is positioned between the first and second yarns. At the connection point between the weft and the warp yarns, the first and second yarns are combined to form a three-layer structure, achieving a weaving-like effect. This bonding mesh eliminates the warp yarn loop structure, saving material while maintaining strength and significantly reducing costs.

[0106] The present invention and its embodiments have been described above illustratively. This description is not restrictive, and the figures shown are only one embodiment of the present invention; the actual structure is not limited thereto. Therefore, if those skilled in the art are inspired by this description and design similar structures and embodiments without departing from the spirit of the present invention, such designs should fall within the protection scope of the present invention.

Claims

1. A warp-knitting-like bonded net, comprising: a plurality of warp yarns (1) arranged in parallel along a warp direction, wherein the warp yarns (1) comprise a first yarn (11) and a second yarn (12) located on a same warp line; andweft yarns (2) arranged in a reciprocating folded manner along the warp direction between adjacent or spaced warp yarns (1), wherein the weft yarns (2) are disposed between the first yarn (11) and the second yarn (12); a continuous hot-pressed composite segment is formed by the first yarn (11) and the second yarn (12) on two sides of connection points between the warp yarns (1) and the weft yarns (2).

2. The warp-knitting-like bonded net according to claim 1, wherein along the warp direction, contact surfaces of the first yarn (11) and the second yarn (12) are hot-pressed and composited, and composited warp yarns (1) form a flat surface.

3. The warp-knitting-like bonded net according to claim 1, wherein the weft yarn (2) is folded between the warp yarns (1), a fold line (3) is formed at a turning position, the fold line (3) and the warp yarns (1) form two connection points, and the first yarn (11) and the second yarn (12) between the two connection points are hot-pressed and composited.

4. The warp-knitting-like bonded net according to claim 1, wherein the warp yarns (1) or the weft yarns (2) are monofilament yarns or film yarns made of polyethylene, polypropylene, or a mixed material of polyethylene and polypropylene.

5. The warp-knitting-like bonded net according to any one of claims 1-4, wherein the first yarn (11) and the second yarn (12) have a denier of 350-650, and the weft yarn (2) has a denier of 150350.

6. The warp-knitting-like bonded net according to claim 5, wherein the bonded net has a basis weight of 4.0-12 g / m2.

7. The warp-knitting-like bonded net according to claim 5, wherein the first yarn (11) and the second yarn (12) have a tensile strength of 20-50 N, and the warp yarn (1) has a tensile strength of 1.5-3.0 times the tensile strength of the first yarn (11) or the second yarn (12).

8. The warp-knitting-like bonded net according to claim 5, wherein the first yarn (11) and the second yarn (12) have a width of 0.8-5 mm.

9. The warp-knitting-like bonded net according to claim 8, wherein a difference between the width of the first yarn (11) and the width of the second yarn (12) is 0-2.0 mm.

10. The warp-knitting-like bonded net according to claim 1, wherein auxiliary yarns (4) are arranged between adjacent warp yarns (1), and the auxiliary yarns (4) are arranged in parallel with the warp yarns (1), and are hot-pressed and composited with the weft yarns (2).

11. The warp-knitting-like bonded net according to claim 10, wherein the auxiliary yarns (4) are located on one side of the weft yarns (2); or:the auxiliary yarns (4) comprise an upper auxiliary yarn and a lower auxiliary yarn that are hot-pressed and composited, the weft yarn (2) is located between the upper auxiliary yarn and the lower auxiliary yarn, and a continuous hot-pressed composite segment is formed by the upper auxiliary yarn and the lower auxiliary yarn on two sides of connection points between the auxiliary yarns (4) and the weft yarn (2).

12. A warp-knitting-like bonded net, comprising:a plurality of warp yarns (1), wherein the plurality of warp yarns (1) are arranged in parallel along a warp direction, the warp yarns (1) comprise a first yarn (11) and a second yarn (12) located on a same warp line, and contact surfaces of the first yarn (11) and the second yarn (12) are hot-pressed and composited;weft yarns (2), wherein the weft yarns (2) are arranged in a reciprocating folded manner between adjacent or spaced warp yarns (1), and at connection points between the weft yarns (2) and the warp yarns (1), at least one of an upper surface or a lower surface of the weft yarns (2) is hot-pressed and composited with the first yarn (11) or the second yarn (12);the first yarn (11) and the second yarn (12) have a denier of 200-580; and the weft yarns (2) have a denier of 100-350.

13. The warp-knitting-like bonded net according to claim 12, wherein the warp yarns (1) have an elongation at break of 45%-80%.

14. The warp-knitting-like bonded net according to claim 12, wherein the weft yarns (2) between different warp yarns (1) are arranged in parallel along a same warp-direction length.

15. The warp-knitting-like bonded net according to claim 12, wherein the first yarn (11) and the second yarn (12) have a width of 0.8-3.8 mm, and a difference between the width of the first yarn (11) and the width of the second yarn (12) is 0-1.5 mm.

16. The warp-knitting-like bonded net according to claim 12, wherein the weft yarns (2) are folded between the warp yarns (1), a fold line (3) is formed at a turning position, the fold line (3) and the warp yarns (1) form two connection points, and a distance between the two connection points is 3-60 mm.

17. The warp-knitting-like bonded net according to claim 16, wherein a difference between a length of the fold line (3) and the distance between the two connection points is defined as a redundant length, and a percentage of the redundant length relative to the distance between the two connection points is not greater than 20%.

18. A warp-knitting-like bonded net, comprising: a plurality of warp yarns (1) arranged in parallel along a warp direction and weft yarns (2) arranged in a reciprocating folded manner betweenthe warp yarns (1), wherein the warp yarns (1) comprise a first yarn (11) and a second yarn (12) located on a same warp line; and bonded composite segments are formed by the first yarn (11) and the second yarn (12) on two sides of connection points between the warp yarns (1) and the weft yarns (2), such that the weft yarns (2) are fixed between the first yarn (11) and the second yarn (12).

19. The warp-knitting-like bonded net according to claim 18, wherein the weft yarns (2) are arranged in parallel along a same warp-direction length segment.

20. The warp-knitting-like bonded net according to claim 18, wherein a spacing between the warp yarns (1) is 20-160 mm, and the bonded net has a basis weight of 4.5-10 g / m2.

21. The warp-knitting-like bonded net according to claim 18, wherein a spacing between the warp yarns (1) is 15-50 mm, and the bonded net has a basis weight of 4.5-10 g / m2.

22. The warp-knitting-like bonded net according to claim 18, further comprising a spool, wherein the bonded net is wound on the spool.

23. The warp-knitting-like bonded net according to claim 18, wherein the first yarn (11) and the second yarn (12) are composited under a same tension force, thereby forming flat and straight warp yarns (1).

24. A net roll, comprising a spool and a bonded net, wherein the bonded net is wound on the spool;the bonded net has a length of 3600-8000 m; a diameter of the net roll formed on the spool is 20-35 cm; the net roll has a weight of 25-56 kg; and the bonded net comprises a plurality of warp yarns (1) arranged in parallel along a warp direction and weft yarns (2) arranged in a reciprocating folded manner between the warp yarns (1), and the warp yarns (1) and the weft yarns (2) are connected by bonding.

25. A net roll, comprising a spool and a bonded net, wherein the bonded net is wound on the spool;the bonded net has a length of 3000-8000 m; a diameter of the net roll formed on the spool is 20-35 cm; the net roll has a weight of 25-56 kg; and the bonded net comprises a plurality of warp yarns (1) arranged in parallel along a warp direction and weft yarns (2) arranged in a reciprocating folded manner between the warp yarns (1), and the warp yarns (1) and the weft yarns (2) are connected by bonding.

26. The net roll according to claim 24 or 25, wherein the bonded net has the structure according to any one of claims 1-23.

27. A net roll, comprising a spool and a bonded net wound on the spool, wherein the bonded net comprises a plurality of warp yarns (1) arranged in parallel along a warp direction, wherein the warp yarns (1) comprise a first yarn (11) and a second yarn (12) located on a same warp line;weft yarns (2) arranged in a reciprocating folded manner along the warp direction betweenadjacent or spaced warp yarns (1), wherein the weft yarns (2) are disposed between the first yarn (11) and the second yarn (12); a continuous hot-pressed composite segment is formed by the first yarn (11) and the second yarn (12) on two sides of connection points between the warp yarns (1) and the weft yarns (2);the bonded net formed by composition has a flat surface structure, such that for a bonded net having a length of 3000 m, a diameter of a formed net roll is not greater than 23 cm, and for a bonded net having a length of 5000 m, a diameter of a formed net roll is not greater than 24.5 cm.

28. The net roll according to claim 27, wherein the first yarn (11) and the second yarn (12) have a denier of 350-650.

29. The net roll according to claim 27, wherein the net is configured for binding and packaging, a spacing between the warp yarns (1) is 20-26 mm, and the bonded net has a basis weight of 4.5-6.5 g / m2.

30. The net roll according to claim 27, wherein the bonded net has the structure of the bonded net according to any one of claims 1-23.

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