A non-woven netting and net roll

Abstract

The application discloses a kind of non-woven binding net and net roll, belong to the technical field of net weaving.The non-woven binding net of the application, a plurality of the warp yarn is arranged along the warp direction parallelly, and weft yarn is reciprocated and extends along the warp direction between warp yarns;Warp yarn includes sheet-like first branch yarn and second branch yarn, and weft yarn is stacked between first branch yarn and second branch yarn in sheet form, and the lower surface of first branch yarn and the upper surface of second branch yarn are fixed by hot pressing and compounding;The denier of first branch yarn and second branch yarn is 350-560 denier, and the formed binding net grammage is 4.5-7.0g / m 2 , the interval of adjacent warp yarn is 10-35mm, under a certain width, the tensile force that can be carried along the warp direction is not less than 270kg, which breaks through the existing warp knitting material limit;In addition, the binding net does not have the structure of warp yarn winding, which can significantly improve the strength, and through the compounding mode, the peeling of warp yarn and weft yarn is avoided, and the material is saved.

Description

Technical Field

[0001] This invention relates to the field of mesh weaving technology, and more specifically, to a non-woven binding mesh and mesh roll. Background Technology

[0002] Currently, binding nets generally have two forming methods: one is warp knitting, such as... Figure 1 As shown, warp knitting uses the continuous looping of warp yarns to fix the weft yarns in place. The warp yarns bear the force in the warp direction, while the weft yarns prevent the warp yarns from unraveling. This method uses one or more groups of parallel yarns fed into all the working needles of the machine in the warp direction, forming loops simultaneously to create a knitted fabric. This method is called warp knitting, and the resulting knitted fabric is called warp-knitted fabric. Due to the repeated looping, warp knitting uses more material in the warp direction.

[0003] Figure 2 This demonstrates another weaving method: beat-up weaving. During beat-up, 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.

[0004] Figure 2 The diagram illustrates a mesh structure with the warp and weft lines perpendicularly distributed. This method can only be implemented on larger equipment, requiring cutting to the desired width after weaving. It is inefficient, and due to its dense weave, it is unsuitable for bundling straw. Furthermore, it is prone to cracking and is not suitable for meshes with high load-bearing capacity in the warp direction.

[0005] Specifically, as 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 the strength requirements because the regular rectangular mesh structure is easily damaged at the hot-pressed or bonded joints due to uneven deformation when subjected to warp stress. Adding more weft threads does not save material.

[0006] To address this issue, patent 202222689647.2 discloses an adhesive mesh, which employs a non-warp-knitted structure where warp and weft yarns are directly bonded. While this structure improves strength and avoids issues like warp winding, its performance is not ideal. If adhesive bonding is used, achieving precise point bonding is technically difficult. If hot-pressing is used, the thin yarn thickness limits the application of high temperatures, as the warp yarns would deform under heat, affecting strength. However, if the heating temperature is too low, although pressing is possible, the pressing points easily crack under warp tension, leading to weft yarn separation. During bundling, the mesh surface tears instantly, rendering it impractical.

[0007] To address the aforementioned issues, the current challenge is how to improve the warp strength of the mesh while using a given amount of material. Summary of the Invention

[0008] 1. The technical problem that the invention aims to solve

[0009] The purpose of this invention is to overcome the problem that existing technologies are difficult to further improve in terms of mesh strength and material usage, and to provide a non-woven binding net and net roll. By improving the mesh structure, it is possible to achieve greater mesh strength with less material, breaking through the limitations of warp knitting and weft knitting methods in existing technologies.

[0010] 2. Technical Solution

[0011] To achieve the above objectives, the technical solution provided by this invention is as follows:

[0012] The present invention provides a non-woven binding net, which is formed by the longitudinal and transverse arrangement of warp and weft yarns; multiple warp yarns are arranged in parallel along the warp direction, and the weft yarns are folded back and forth between the warp yarns and extend along the warp direction;

[0013] The warp yarn adopts a double-layer composite structure, including a first yarn and a second yarn in sheet form. The weft yarn is stacked in sheet form between the first yarn and the second yarn, and the lower surface of the first yarn and the upper surface of the second yarn are fixed by hot pressing.

[0014] The first and second yarns both have a denier of 350–560 and a tensile strength of 25–45 N; the weft yarn has a denier not greater than that of either yarn, and the resulting binding net has a basis weight of 4.5–7.0 g / m². 2 The interval between adjacent warp yarns is 10-35mm. When 1.23m is used as the test width for bearing tensile strength, the tensile strength that the warp direction can bear is not less than 270kg.

[0015] Unless otherwise specified, the tensile strength referred to is the measurement taken when the net width is 1.23m. That is, the tensile strength referred to is the load-bearing capacity of the specified width, and it is not required that the binding net be greater than 1.2m. For example, a net with a width of 0.5m can be arranged to a width of 1.23m according to the existing warp spacing of the net, and its tensile strength can be measured in the warp direction.

[0016] As a further improvement, the stretch rates of the first and second yarns are approximately the same, with a difference of no more than 10%.

[0017] As a further improvement, the width of the first yarn and the second yarn is 0.8 to 3 mm, and the difference between the two widths is no more than 1.2 mm.

[0018] As a further improvement, the intersection of the weft yarn and the warp yarn is point G. At least one of the first yarn or the second yarn is combined with the weft yarn at point G. On both sides of point G in the warp direction, the first yarn and the second yarn are combined together, restricting the movement of the weft yarn in the warp direction.

[0019] As a further improvement, in the unfolded state, the angle between the weft yarn and the warp yarn is no greater than 55°.

[0020] As a further improvement, the weft yarn is folded back between the warp yarns, forming a folding line at the change of direction, and the distance between the folding line and the two G points formed by the warp yarns is 5-60mm.

[0021] As a further improvement, the weft yarn folds back and forth between two adjacent warp yarns, forming a folding line at the change of direction.

[0022] As a further improvement, the weft yarn folds back and forth between two spaced warp yarns, and the weft span of the weft yarn does not exceed 5 warp yarns.

[0023] As a further improvement, each warp yarn is connected to a folded weft yarn, forming a folded line.

[0024] The present invention provides a non-woven binding net, which is formed by the longitudinal and transverse arrangement of warp and weft yarns; multiple warp yarns are arranged in parallel along the warp direction, and the weft yarns fold back and forth between the warp yarns and extend along the warp direction; the weft yarns form fold lines at the change of direction, and the fold lines intersect with the warp yarns to form two G points, and the length of the fold lines is greater than the length of the warp yarns between the two G points;

[0025] The warp yarn adopts a double-layer composite structure, including a first yarn and a second yarn. The weft yarn is stacked between the first yarn and the second yarn, and the lower surface of the first yarn and the upper surface of the second yarn are fixed by hot pressing.

[0026] The first and second yarns both have a denier of 350–560 and a tensile strength of 25–45 N, and the resulting binding net has a basis weight of 4.5–7.0 g / m². 2 .

[0027] As a further improvement, the interval between adjacent warp yarns is 15–28 mm, the angle between the weft yarn and the warp yarn is no greater than 55°, and the weight of the resulting binding net is 4.5–6.0 g / m². 2 .

[0028] As a further improvement, the difference between the length of the turnaround line and the distance between its two connection points is the redundant length, and the percentage of the redundant length relative to the distance between the two connection points is no more than 20%.

[0029] As a further improvement, the weft span does not exceed 5 warp yarns, and the angle between the weft and warp yarns is 25-50°.

[0030] As a further improvement, the denier of the weft yarn is 150 to 350, and the upper and lower sides of the weft yarn are combined with the first yarn and the second yarn, respectively.

[0031] The present invention provides a non-woven binding net roll, wherein the net roll has a net surface structure that adopts the aforementioned binding net structure.

[0032] As a further improvement, the basis weight of the binding net is 4.2–5.5 g / m². 2 The mesh surface can withstand a tensile force of 250-340 kg in the warp direction.

[0033] As a further improvement, when the length of the net roll is in the range of 3000 to 4000 m, its diameter is no greater than 23.5 cm; when the length of the net roll is in the range of 4000 to 5000 m, its diameter is no greater than 25.5 cm.

[0034] As a further improvement, the binding net is wound on a roll with a diameter of 88-100 mm, and the roll is a non-metallic roll.

[0035] In some embodiments, the material can be metal. Due to the high strength of metal, its thickness can be reduced, further minimizing the overall size.

[0036] Existing binding nets are all formed using warp knitting, a process that requires repeated looping, resulting in significant material loss in the warp yarns and a tendency for warp yarn breakage. Existing bonding methods are impractical during processing, requiring positioning on both sides to create reciprocating folds in the weft yarns, limiting processing efficiency and increasing the risk of delamination. To address this, this solution employs a double-layered warp structure, with the weft yarns covering two layers of warp yarns, thereby preventing warp yarn delamination and increasing warp yarn strength.

[0037] 3. Beneficial effects

[0038] Compared with the prior art, the technical solution provided by this invention has the following advantages:

[0039] The non-woven binding net of this invention divides the warp yarns into a first yarn and a second yarn. The weft yarn is folded back and forth between the warp yarns along the warp direction and is positioned between the first and second yarns. At both sides of 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 binding net eliminates the warp yarn loop structure, significantly improving strength, and the composite method prevents the separation of warp and weft yarns. Furthermore, since there is no looping or knotting, it saves material, achieving a weight of 7 g / m². 2 Within this range, the tensile strength it can bear exceeds 270kg, breaking through the limits of existing warp-knitted materials. Attached Figure Description

[0040] Figure 1 This is a schematic diagram of a bale net structure made using warp knitting.

[0041] Figure 2 A schematic diagram of the mesh structure using a weft-knitting method;

[0042] Figure 3 This is a schematic diagram of a mesh structure where the weft yarn is folded back between adjacent warp yarns;

[0043] Figure 4 A schematic diagram of the unfolded structure in which the weft yarns are layered between the first and second yarns;

[0044] Figure 5 A schematic diagram of the distribution structure of auxiliary yarns and warp yarns;

[0045] Figure 6 A schematic diagram illustrating one implementation method when a non-parallel structure is used between different weft yarns;

[0046] Figure 7 This is a schematic diagram of the structure when the weft yarn crosses three warp yarns;

[0047] Figure 8 This is a schematic diagram of the structure for binding the net roll.

[0048] Explanation of the labels in the diagram:

[0049] 1. Warp yarn; 11. First yarn; 12. Second yarn;

[0050] 2. Weft yarn;

[0051] 3. Turnaround line;

[0052] 4. Auxiliary yarn. Detailed Implementation

[0053] 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.

[0054] 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, provided they do not affect the effectiveness or 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.

[0055] Combination Figure 3 This embodiment of a non-woven binding net is formed by the longitudinal and transverse arrangement of warp yarns 1 and weft yarns 2, that is, by the intersection of warp yarns 1 distributed in the warp direction and weft yarns 2 distributed in the weft direction. Specifically, multiple warp yarns 1 are arranged parallel to each other along the warp direction, with a spacing of 10mm, 20mm, 28mm, etc. The weft yarns 2 fold back and forth between the warp yarns 1 and extend along the warp direction. The weft yarns 2 are distributed in a wave pattern in the warp direction, intersecting with two warp yarns 1 near the crest and trough of the wave, respectively. The weft yarns 2 begin to fold back at the intersection, thus generally forming two intersection points with the warp yarns 1. Although the position between the two intersection points is at the crest or trough of the wave, because the yarn is relatively soft, it is not required to have a distinct highest point. As long as two connection points can be formed to connect the warp yarns 1 and the weft yarns 2, it is sufficient. In one embodiment, the weft yarn 2 can connect only two adjacent warp yarns 1, that is... Figure 3 The embodiment shown is illustrated. In other embodiments, the weft yarn 2 may also span multiple warp yarns 1, for example, spanning 3 or 4 warp yarns 1.

[0056] Figure 4 This diagram illustrates a configuration of warp yarn 1 and weft yarn 2, wherein the warp yarn 1 is divided into an upper first yarn 11 and a lower second yarn 12, and the weft yarn 2 is sandwiched between the first yarn 11 and the second yarn 12, making the binding net a three-layer structure. The warp yarn 1 or weft yarn 2 can be made of polyethylene, polypropylene, or a mixture of polyethylene and polypropylene, using monofilament yarns or membrane yarns. In other embodiments for manufacturing nets for different purposes, other materials can also be used; there are no specific limitations.

[0057] As Figure 4 In a specific implementation, the warp yarn 1 adopts a double-layer composite structure, including a sheet-like first yarn 11 and a second yarn 12. For example, the first yarn 11 and the second yarn 12 can be made of membrane yarn and have a sheet structure. The weft yarn 2 is sheet-like and stacked between the first yarn 11 and the second yarn 12, and the lower surface of the first yarn 11 and the upper surface of the second yarn 12 are fixed by hot pressing.

[0058] The intersection of warp yarn 1 and weft yarn 2 is denoted as point G. The first yarn 11 and the second yarn 12 can be fully bonded together or partially bonded. However, the key point is that point G should be located on a continuous bonded section; that is, within a certain distance on both sides, the first yarn 11 and the second yarn 12 must be bonded together. Firstly, after the two points G are bonded, even if point G is not bonded to the two warp yarns of warp 1, the bonded portion between the two points forms a barrier, preventing the mesh from easily cracking. Secondly, compared to the previous single-point connection which was prone to peeling, this bonded structure creates a larger surface contact between the two warp yarns of warp 1, transforming the peeling problem between warp yarn 1 and weft yarn 2 into the peeling problem between the first yarn 11 and the second yarn 12, thereby improving the connection stability of warp yarn 1 and weft yarn 2.

[0059] In implementation, the denier of both the first yarn 11 and the second yarn 12 is 350–560 denier, such as 400 denier, 460 denier, or 48 denier. The two yarns can be equal or slightly different, with a difference not exceeding 30%, for example, the first yarn 11 is 530 denier and the second yarn 12 is 540 denier. The tensile strength of the two yarns is 25–45 N, and after compounding, it can withstand 50–80 N. The weft yarn 2 mainly serves a connecting function, and its denier is no greater than that of either yarn. Using this structure and related parameters, the resulting binding net has a basis weight of 4.5–7.0 g / m². 2 The interval between adjacent warp yarns is 10-35mm. When 1.23m is used as the test width for bearing tensile strength, the tensile strength that the warp can bear is not less than 270kg.

[0060] Unless otherwise specified, the tensile strength referred to is the measurement taken when the net width is 1.23m. That is, the tensile strength referred to is the load-bearing capacity of a specified width, and it is not required that the binding net be greater than 1.2m. For example, a net with a width of 0.5m can be arranged to a width of 1.23m according to the existing warp spacing of the net, and its tensile strength can be measured in the warp direction. A net with a width of 1.5m can be cut to a width of 1.23m for measurement.

[0061] In one embodiment, the hot-pressed composite section can be a composite section formed at a certain distance on both sides of point G, such as 1-2 cm, or it can be longer or shorter. The weft yarn 2 is confined in the hot-pressed composite section and will not run along the warp direction. The hot-pressed composite section can be discontinuous at non-connection point positions.

[0062] In practice, the stretch rates of the first yarn 11 and the second yarn 12 are approximately the same, with a difference of no more than 5%, and preferably both are made of the same type of yarn. If one yarn has a certain elastic deformation during the bonding process while the other yarn is in a non-stretched state, the bonded warp will have some curvature and will not be able to withstand the load under the same stretching conditions, making it difficult to achieve maximum strength performance. Furthermore, the first yarn 11 and the second yarn 12 are generally bonded under the same tension, and the first yarn 11 and the second yarn 12 do not undergo significant deformation during tensioning, thus ensuring that the two yarns are bonded under the same stretching conditions, resulting in a unified bond.

[0063] In optional configurations, the widths of the first yarn 11 and the second yarn 12 are 0.8–3 mm, commonly ranging from 0.8–2.2 mm, such as 1.4 mm and 1.8 mm respectively. The first yarn 11 and the second yarn 12 can have a certain width difference, but this difference should not exceed 1.2 mm. Furthermore, it can be controlled within 0.6 mm to avoid affecting the composite effect due to one yarn being too thin.

[0064] In one embodiment, the intersection of the weft yarn 2 and the warp yarn 1 is point G. At least one of the first yarn 11 or the second yarn 12 is combined with the weft yarn 2 at point G, that is, the weft yarn 2 can be combined with one of the yarns on its side. On both sides of point G in the warp direction, the first yarn 11 and the second yarn 12 are combined together, restricting the warp movement of the weft yarn 2.

[0065] In another implementation, the two sides of the weft yarn 2 are respectively combined with the first yarn 11 and the second yarn 12. When a single warp yarn 1 is combined with the weft yarn 2, the force is changed to tearing perpendicular to the mesh surface, making it easy to peel off. After using the composite warp structure, the force at the intersection point is changed to the force at the intersection point and the continuous composite segment, thereby improving the stability of the connection.

[0066] Based on the above structure, the weft yarn 2 mainly serves a connecting function, preventing the warp yarns 1 from unraveling. Therefore, the weft yarn can extend in a wavy pattern, such as... Figure 3 As shown, the angle r between weft yarn 2 and warp yarn 1 can be 25°, 40°, or 60°. To save material and without affecting the stress in the warp direction, the angle r between weft yarn 2 and warp yarn 1 in the unfolded state should not exceed 55°, and is generally controlled between 20° and 55°. This allows for more redundancy when the warp is stretched and deformed, resulting in less tearing at the intersection points.

[0067] The portion of the wave crest or trough formed by the weft yarn 2 folding back between the warp yarns 1, located outside point G, is called the foldback line 3, i.e., the foldback line 3 is formed at the change of direction. The distance between the two G points of the foldback line 3 can be adjusted differently as needed. For baling nets used for straw baling, as one implementation method, the distance between the two G points formed by the foldback line 3 and the warp yarn 1 is 5-60mm. By setting this spacing and the crest pitch, the density of the net can be controlled.

[0068] In other embodiments, combined with Figure 5 Auxiliary yarns 4 are placed between adjacent warp yarns 1, parallel to the warp yarns 1, and hot-pressed together with the weft yarns 2. In some applications, the addition of auxiliary yarns 4 increases the mesh density and improves leak-proof performance. In implementation, the auxiliary yarns 4 can be located on one side of the weft yarns 2; they can be placed between only some adjacent warp yarns 1, or between all adjacent warp yarns 1. The auxiliary yarns 4 can also be a composite structure, with the weft yarns 2 bonded between two layers of auxiliary yarns 4. The auxiliary yarns and warp yarns can be identical in material and weight per unit area; the difference is that the warp yarns are the yarns where the weft yarns bend and connect, while the weft yarns and auxiliary yarns are only connected in a straight line, and the weft yarns do not fold back at the auxiliary yarns.

[0069] In practice, multiple sets of comb needles can be used to create different weft yarn paths. For example, warp yarn 1 can be distributed in a pattern of large and small spacing, such as... Figure 7 As shown, b1 is the large spacing and b2 is the small spacing. Therefore, the weft yarns in the large spacing b1 and the weft yarns in the small spacing b2 do not need to be parallel.

[0070] As an improvement, the weft yarn 2 can also use a larger crest pitch and arrange the two weft yarns symmetrically or in a certain staggered manner, which can also achieve its function of connecting the warp yarn 1, without specific restrictions.

[0071] Figure 8 A binding mesh structure is shown, in which the weft yarn 2 folds back and forth between two spaced warp yarns 1, each warp yarn 1 being connected to a folded weft yarn 2, and the weft span of the weft yarn 2 is three warp yarns 1. Warp yarns 1a and 1c form an angle 3a with weft yarn A; warp yarn 1b creates an interval between warp yarns 1a and 1c, and intersects with weft yarn A. Simultaneously, warp yarn 1b forms an angle 3b with weft yarn B. In other embodiments, the number of warp yarns spaced between the same weft yarn folds does not exceed three, avoiding a large edge width that could lead to easy edge breakage. In practical use, it can also be implemented in conjunction with auxiliary yarns 4.

[0072] In conjunction with the above embodiments, as another implementation of the non-woven binding net, the binding net is formed by the longitudinal and transverse arrangement of warp yarns 1 and weft yarns 2; multiple warp yarns 1 are arranged in parallel along the warp direction, with the interval between adjacent warp yarns 1 being 10-40mm, which can be further controlled to be 15-28mm; the weft yarns 2 fold back and forth between the warp yarns 1 and extend along the warp direction; the weft yarns 2 form a folding line 3 at the change of direction, and the folding line 3 intersects with the warp yarns 1 to form two G points, and the length of the folding line 3 is greater than the length of the warp yarns 1 between the two G points.

[0073] The warp yarn 1 adopts a double-layer composite structure, including a first yarn 11 and a second yarn 12. The weft yarn 2 is stacked between the first yarn 11 and the second yarn 12, and the lower surface of the first yarn 11 and the upper surface of the second yarn 12 are bonded together by hot pressing to fix the weft yarn 2. The denier of both the first yarn 11 and the second yarn 12 is 350-560 denier, and the tensile strength is 25-45 N. The tensile strength of the composite warp yarn 1 is greater than 50 N. The denier of the weft yarn 2 is not greater than that of either yarn, for example, 150-300 denier. The weight of the resulting binding net is 4.5-7.5 g / m². 2 .

[0074] The difference between the length of the return line 3 and the distance between its two connection points is the redundancy length, and this redundancy length is no more than 25% of the distance between the two connection points. To achieve rapid processing, the return line 3 is a pre-designed feature, and this portion of the return line 3 forms a closed loop, preventing the weft yarn 2 from separating from the warp yarn 1 even after the weft yarn 2's bonding point breaks. The pre-designed return line 3 can also adapt to the deformation of the warp yarn.

[0075] In another embodiment, the weft yarn 2 spans four warp yarns 1 in the weft direction, and the angle between the weft yarn 2 and the warp yarns 1 is 25° to 50°. Further, the denier of the weft yarn 2 is 150 to 350 denier, and the upper and lower sides of the weft yarn 2 are combined with the first yarn 11 and the second yarn 12, respectively.

[0076] This embodiment provides a non-woven binding net roll, the net roll's surface structure adopting the aforementioned binding net.

[0077] In a specific embodiment, the binding net roll includes a drum and the aforementioned binding net, with the binding net wound around the drum. The length of the binding net is 3600m, 4000m, 5000m, etc., and the diameter D of the net roll formed on the drum is 20-35cm. For ease of handling, the inner diameter of the drum is approximately 76mm. For sufficient support, the outer diameter of the drum can be approximately 88-100mm, such as 95mm or 98mm, which can be adjusted according to the length of the binding net being carried and the material of the drum. The diameter of the net roll is the overall diameter measured with the binding net wound around the drum, including the drum's dimensions. The drum can be a metal or non-metal drum. As a specific embodiment of non-metallic binding net, it can be a paper or plastic drum. If a metal drum is used, a welded pipe with an inner diameter of 78mm and a wall thickness of 1.1-1.2mm can be used, allowing for a smaller roll diameter and an overall size 1cm-1.5cm smaller than that of a non-metallic drum.

[0078] As a characteristic of the net roll, it has a flatter overall surface, resulting in a smaller thickness. When the length of the net roll is in the range of 3000-4000m, its diameter is no greater than 23.5cm; when the length of the net roll is in the range of 4000-5000m, its diameter is no greater than 25.5cm.

[0079] In one embodiment, the first warp yarn 11 and the second warp yarn 12 both have a denier of 350-560 and a tensile strength of 25-35 N. The tensile strength of the two warp yarns combined is approximately 50-65 N, and the basis weight of the binding net is 4.2-5.5 g / m². 2 The tensile strength that the mesh can withstand in the warp direction is 250-340 kg. Specifically, the denser the warp yarns are arranged, the higher the tensile strength, but the greater the weight per unit area. For straw baling nets, a tensile strength of around 300 kg is generally required.

[0080] The width W of the net roll can be adjusted during processing as needed, for example, to 0.7m. Generally, the width of the net used for binding straw is 1.2–1.5m. As required by this scheme, the weight of the net roll is 25–56kg; the gram weight of its binding net is 4.5–7.0g / m². 2 The tensile force that the mesh surface can withstand in the warp direction is 250–340 kg. This tensile force is expressed in weight units and can be obtained through conversion from mechanical testing data or gravity tensile testing. In this mesh roll structure, the bonding mesh used adopts the structure obtained from the aforementioned embodiments or a combination thereof.

[0081] In one embodiment, the interval between adjacent warp yarns 1 is 15–28 mm, for example 23 mm or 25 mm, and the angle r between the weft yarn 2 and the warp yarn 1 is no greater than 55°, resulting in a binding net with a basis weight of 4.5–6.0 g / m². 2The difference between the length of the turnaround line 3 and the distance between its two connection points is the redundant length. This redundant length is less than 8% of the distance between the two connection points, thus avoiding material waste.

[0082] As a specific implementation of the binding net, taking a warp spacing of 24-25mm as an example, different embodiments are shown in the table below.

[0083]

[0084] In the table above, double yarn means the weft yarn is connected to two warp yarns in the weft direction; triple yarn means the weft yarn is connected to three warp yarns in the weft direction; TAMA represents TamaCycle Netwrap baling netting products, and RKW is RKW Group's baling netting product. Both TAMA and RKW netting types use similar designs. Figure 1 The tensile strength refers to the minimum value that the binding net can withstand. For example, the data 300kg in the table means that the actual tensile strength is not less than 300kg. Unless otherwise specified, the tensile strength refers to the data measured when the binding net is approximately 1.23m wide.

[0085] Based on the comparison of the above embodiments, conventional warp-knitted or weft-bonded structures, due to their irregular structure or the use of materials with a larger denier to achieve the specified tensile strength, generally have a larger roll diameter, which limits the roll length. However, the solution of this application, while maintaining tensile strength, significantly reduces the basis weight and shrinks the overall size. For rolls of the same size, it can achieve a greater length, reducing the frequency of replacement.

[0086] The non-woven binding net 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 both sides of 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 binding net eliminates the warp yarn loop structure, saving material while maintaining strength and significantly reducing costs.

[0087] 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 non-woven binding net, formed by warp yarns (1) and weft yarns (2) arranged longitudinally and transversely; characterized in that: Multiple warp yarns (1) are arranged in parallel along the warp direction, and the weft yarns (2) are folded back and forth between the warp yarns (1) and extend along the warp direction; The warp yarn (1) adopts a double-layer composite structure, including a sheet-like first yarn (11) and a second yarn (12). The weft yarn (2) is sheet-like and stacked between the first yarn (11) and the second yarn (12). The lower surface of the first yarn (11) and the upper surface of the second yarn (12) are fixed by hot pressing. The intersection of the weft yarn (2) and the warp yarn (1) is point G. At least one of the first yarn (11) or the second yarn (12) is combined with the weft yarn (2) at point G. On both sides of point G in the warp direction, the first yarn (11) and the second yarn (12) are combined together, restricting the warp movement of the weft yarn (2). The weft yarn (2) is folded back between the warp yarns (1) and forms a folding line (3) at the change of direction. The folding line (3) and the warp yarn (1) form two points G. The first yarn (11) and the second yarn (12) both have a denier of 350~560 and a tensile strength of 25~45N; the weft yarn (2) has a denier not greater than that of any of the yarns, and the resulting binding net has a basis weight of 4.5~7.0g / m². 2 The interval between adjacent warp yarns (1) is 10~35mm; 1.23m is used as the test width for bearing tensile strength, so that the tensile strength that the warp direction can bear is not less than 270kg.

2. The non-woven binding net according to claim 1, characterized in that: The difference in elongation between the first yarn (11) and the second yarn (12) is no greater than 10%.

3. The non-woven binding net according to claim 1, characterized in that: The widths of the first yarn (11) and the second yarn (12) are 0.8~3mm, and the difference between their widths is no more than 1.2mm.

4. The non-woven binding net according to claim 1, characterized in that: In the unfolded state, the angle between the weft yarn (2) and the warp yarn (1) is no greater than 55°.

5. A non-woven binding net according to claim 4, characterized in that: The distance between the two G points formed by the turnback line (3) and the warp yarn (1) is 5~60mm.

6. A non-woven binding net according to any one of claims 1 to 5, characterized in that: The weft yarn (2) folds back and forth between two adjacent warp yarns (1), forming a folding line (3) at the change of direction.

7. A non-woven binding net according to any one of claims 1 to 5, characterized in that: The weft yarn (2) folds back and forth between two warp yarns (1) spaced apart, and the weft span of the weft yarn (2) does not exceed 5 warp yarns (1).

8. A non-woven binding net according to claim 7, characterized in that: Each warp yarn (1) is connected to a folded weft yarn (2), forming a folded line (3).

9. A non-woven binding net roll, characterized in that: The mesh structure of the net roll adopts the binding net structure described in any one of claims 1 to 8.

10. A non-woven binding net roll according to claim 9, characterized in that: The binding net has a weight of 4.5~5.5 g / m². 2 Using 1.23m as the test width for bearing tensile strength, the bearing tensile strength in the radial direction is 270~340kg.

11. A non-woven binding net roll according to claim 9, characterized in that: When the length of the net roll is in the range of 3000~4000m, its diameter is no greater than 23.5cm; when the length of the net roll is in the range of 4000~5000m, its diameter is no greater than 25.5cm.

12. A non-woven binding net roll according to claim 9, characterized in that: The binding net is wound around a roll, the roll having a diameter of 88-100mm, and the roll is a non-metallic tube.

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