Non-woven binding net and net roll

Abstract

The invention discloses a non-woven binding net and a net roll, and belongs to the technical field of net weaving. According to the non-woven binding net, multiple pieces of warp yarn are arranged in parallel in the warp direction, and weft yarn is folded back and forth between the warp yarn and extends in the warp direction; the warp yarns comprise lamellar first count yarns and lamellar second count yarns, the weft yarns are lamellar and stacked between the first count yarns and the second count yarns, and the lower surfaces of the first count yarns and the upper surfaces of the second count yarns are subjected to hot-pressing compounding, so that the weft yarns are fixed; the denier number of the first yarn and the denier number of the second yarn are both 350-560 deniers, the gram weight of the formed binding net is 4.5-7.0 g / m < 2 >, the interval between every two adjacent warp yarns is 10-35 mm, under a certain width, the tensile force capable of being borne in the warp direction is not smaller than 270 kg, and the limit of an existing warp knitting material is broken through. In addition, the bonding net does not have a warp winding structure, the strength can be remarkably improved, stripping of the warp and the weft is avoided through a compounding mode, and more materials are saved.

Description

Technical Field

[0001] The present invention relates to the technical field of net weaving, and more particularly to a non-woven binding net and a net roll. Background Art

[0002] At present, there are generally two ways to form the binding net, one is the warp knitting method, such as Figure 1 As shown, the warp is used to continuously circle the weft to fix the warp. The warp bears the force in the warp direction, and the weft is used to prevent the warp from spreading. This method uses one or several groups of parallel yarns to form loops on all the working needles of the machine fed in the warp direction to form a knitted fabric. This method is called warp knitting, and the knitted fabric formed is called warp knitted fabric. Due to the repeated winding of warp knitting, more material will be used in the warp direction.

[0003] Figure 2 Another weaving method is shown, that is, the structure formed by the weft-beating weaving method. During the weft-beating process, the weft yarn and the warp yarn will move relative to each other. The formation of the fabric is not completed after one weft-beating. The weft yarn and the warp yarn will still move relative to each other in the fabric formation area at a certain distance from the cloth fell. In order to avoid relative movement, some solutions will be bonded at the connection with the weft yarn to improve the stability of the connection.

[0004] Figure 2 The schematic diagram of the weaving structure with the warp and weft distributed vertically can only be implemented on larger equipment. After weaving, it is cut according to the required width. This method is inefficient and is not suitable for bundling straw due to its dense weaving. It is also easy to crack and is not suitable for weaving with a large bearing capacity in the warp direction.

[0005] Specifically, the mesh cloth disclosed in patent 201210372860.9 has a structure in which the warp and weft are laid flat and bonded. Although the warp is not knotted in a circle, the flat structure is difficult to meet the strength requirements because the regular rectangular mesh structure is easily damaged by the uneven deformation of the hot pressing or bonding connection points when it is deformed in the warp direction. If more wefts are added, it will not save materials.

[0006] In response to this problem, patent 202222689647.2 discloses an adhesive braided mesh that adopts a non-warp knitting structure, in which the warp yarns are directly bonded to the weft yarns. Although this structure can improve strength and avoid problems such as warp knitting winding, its use effect is not good. If adhesive connection is used, it is technically difficult to achieve fixed-point gluing; if hot pressing composite is used, due to the small thickness of the yarn, a higher temperature cannot be used, otherwise the warp yarn will be affected by overall thermal deformation and strength; but if the heating temperature is low, although it can be pressed together, when the warp yarn is stretched under force, the pressing point is easy to crack, causing the weft yarn to peel off. When baling, the mesh surface will be torn instantly, which is actually not practical.

[0007] In view of the above problems, how to improve the warp strength of the woven net on the basis of certain materials is a difficult problem currently faced. Summary of the invention

[0008] 1. Technical problem to be solved by the invention

[0009] The purpose of the present invention is to overcome the problem that it is difficult to further improve the mesh strength and material consumption in the prior art, and to provide a non-woven binding net and a net roll. By improving the mesh structure, less material can be used to achieve a greater mesh strength, breaking through the limitations of the warp knitting and weft knitting methods in the prior art.

[0010] 2. Technical solution

[0011] In order to achieve the above object, the technical solution provided by the present invention is:

[0012] The non-woven binding net of the present invention is formed by arranging warp yarns and weft yarns in a longitudinal and transverse manner; a plurality of the 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 a thin sheet shape, and the weft yarn is stacked between the first yarn and the second yarn in a thin sheet shape, and the lower surface of the first yarn and the upper surface of the second yarn are composited by hot pressing so that the weft yarn is fixed;

[0014] The denier of the first yarn and the second yarn are both 350-560 denier, and the tensile strength is 25-45N; the denier of the weft yarn is not greater than the denier of any yarn, and the weight of the binding net formed is 4.5-7.0g / m 2 The interval between adjacent warp yarns is 10 to 35 mm. When 1.23 m is used as the bearing tensile test width, the warp direction can bear a tensile force of no less than 270 kg.

[0015] Unless otherwise specified, the load-bearing tension is measured when the mesh width is 1.23m, that is, the load-bearing tension is the load-bearing capacity of the specified width, and the binding net does not require it to be larger than 1.2m. For example, a 0.5m wide net can be arranged to 1.23m wide according to the existing warp spacing on the mesh surface, and its load-bearing tension is measured in the warp direction.

[0016] As a further improvement, the elongation rates of the first yarn and the second yarn are substantially the same, and the difference between them is no more than 10%.

[0017] As a further improvement, the widths of the first yarn and the second yarn are 0.8-3 mm, and the width difference between the two 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, and on both sides of the warp direction of point G, the first yarn and the second yarn are combined together to limit the warp movement of the weft yarn.

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

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

[0021] As a further improvement, the weft yarn is folded back and forth between two adjacent warp yarns to form a folding line at the direction change position.

[0022] As a further improvement, the weft yarn is folded 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 with a turned-back weft yarn to form a turned-back line.

[0024] A non-woven binding net of the present invention is formed by arranging warp yarns and weft yarns in a longitudinal and transverse manner; a plurality of the 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; the weft yarns form a folding line at the direction change position, and the folding line intersects with the warp yarns to form two G points, and the length of the folding line 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 composited by hot pressing so that the weft yarn is fixed;

[0026] The denier of the first yarn and the second yarn are both 350-560 denier, the tensile strength is 25-45N, and the weight of the binding net formed is 4.5-7.0g / m 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 not greater than 55°, and the weight of the binding net formed is 4.5-6.0 g / m 2 .

[0028] As a further improvement, the difference between the length of the return line and the distance between its two connection points is a redundant length, and the percentage of the redundant length to the distance between the two connection points is not greater than 20%.

[0029] As a further improvement, the weft yarn has a weft span of no more than 5 warp yarns, and the angle between the weft yarn and the warp yarn is 25-50°.

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

[0031] The present invention discloses a non-woven binding net roll, the net surface structure of which adopts the aforementioned binding net structure.

[0032] As a further improvement, the weight of the binding net is 4.2-5.5 g / m 2 The tension on the mesh surface in the warp direction is 250 to 340 kg.

[0033] As a further improvement, when the length of the net roll is within the range of 3000 to 4000 m, the diameter of the net roll is not greater than 23.5 cm; when the length of the net roll is within the range of 4000 to 5000 m, the diameter of the net roll is not greater than 25.5 cm.

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

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

[0036] Existing binding nets are all formed by warp knitting, which requires repeated winding, so the material loss of the warp yarn is relatively large and it is easy to have knot loss. In the existing bonding scheme, it cannot be implemented during processing. It requires positioning on both sides to form a reciprocating return of the weft yarn, which limits the processing efficiency and is easy to peel off. In response to this situation, this scheme uses a duplex structure of warp yarn, covering the weft yarn between two layers of warp yarn, so as to avoid warp yarn peeling and improve the strength of the warp yarn.

[0037] 3. Beneficial effects

[0038] Compared with the prior art, the technical solution provided by the present invention has the following beneficial effects:

[0039] The non-woven binding net of the present invention divides the warp yarn into a first yarn and a second yarn, and the weft yarn is folded back and forth between the warp yarns along the warp direction, and the weft yarn is arranged between the first yarn and the second yarn. On both sides of the connection point between the weft yarn and the warp yarn, the first yarn and the second yarn are compounded together to form a three-layer structure, which has a similar weaving effect. The bonding net does not have a warp yarn winding structure, which can significantly improve the strength, and through the compounding method, the warp yarn and the weft yarn are prevented from peeling off; in addition, since there is no winding and knotting, it saves more materials, and the unit weight is 7g / m 2 Within 10000 square meters, the tensile strength can exceed 270kg, breaking the limit of existing warp knitting materials. BRIEF DESCRIPTION OF THE DRAWINGS

[0040] Figure 1 The diagram is a schematic diagram of the structure of a warp knitted bale net;

[0041] Figure 2 It is a schematic diagram of the mesh structure of the weft weaving method;

[0042] Figure 3 A schematic diagram of a mesh structure in which the weft yarns are folded back between adjacent warp yarns;

[0043] Figure 4 A schematic diagram of an unfolded structure in which a weft yarn is stacked between a first yarn and a second yarn;

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

[0045] Figure 6 A schematic diagram of an implementation method when a non-parallel structure is adopted between different weft yarns;

[0046] Figure 7 This is a schematic diagram of the structure when the weft yarn spans 3 warp yarns;

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

[0048] Explanation of the symbols in the schematic diagram:

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

[0050] 2. Weft yarn;

[0051] 3. Turning line;

[0052] 4. Auxiliary yarn. DETAILED DESCRIPTION

[0053] In order to further understand the content of the present invention, the present invention is described in detail in conjunction with the accompanying drawings and embodiments.

[0054] The structures, proportions, sizes, etc. illustrated in the drawings of this specification are only used to match the contents disclosed in the specification for people familiar with this technology to understand and read, and are not used to limit the limiting conditions for the implementation of the present invention, so they have no substantial technical significance. Any modification of the structure, change of the proportion relationship or adjustment of the size, without affecting the effects and purposes that can be achieved by the present invention, should still fall within the scope of the technical content disclosed by the present invention. At the same time, the terms such as "upper", "lower", "left", "right", "middle" and so on quoted in this specification are only for the convenience of description, and are not used to limit the scope of implementation. The change or adjustment of their relative relationship should also be regarded as the scope of implementation of the present invention without substantially changing the technical content.

[0055] Combination Figure 3 , a non-woven binding net of the present embodiment is formed by the warp yarns 1 and the weft yarns 2 arranged vertically and horizontally, that is, the warp yarns 1 distributed in the warp direction and the weft yarns 2 distributed in the weft direction are arranged crosswise. Specifically, a plurality of warp yarns 1 are arranged in parallel along the warp direction, and the spacing between them can be 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 wavy shape in the warp direction, and they intersect with two warp yarns 1 near the crests and troughs respectively. The weft yarns 2 begin to fold back at the intersection, so generally two intersections are formed with the warp yarns 1. Although the position between the two intersections belongs to the crest or trough position, since the yarn is relatively soft, it is not required to present an obvious highest point. As long as it can fold back to form two connection points to achieve the connection between the warp yarns 1 and the weft yarns 2. In one embodiment, the weft yarns 2 can only connect two adjacent warp yarns 1, that is Figure 3 In other embodiments, the weft yarn 2 can also span multiple warp yarns 1, for example, span 3 or 4 warp yarns 1.

[0056] Figure 4 A composition of warp yarn 1 and weft yarn 2 is shown, wherein the warp yarn 1 is divided into a first yarn 11 on the upper side and a second yarn 12 on the lower side, and the weft yarn 2 is sandwiched between the first yarn 11 and the second yarn 12, so that the binding net is a three-layer structure as a whole. The warp yarn 1 or weft yarn 2 used can be a monofilament yarn or a membrane yarn made of polyethylene, polypropylene, or a mixed material of polyethylene and polypropylene. In other embodiments of making nets for different purposes, other materials can also be used without specific restrictions.

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

[0058] The intersection of the warp yarn 1 and the weft yarn 2 is recorded as point G, and the first yarn 11 and the second yarn 12 can be composited as a whole or partially. But as a key point, point G should be located on a continuous composite segment, that is, within a distance on both sides of it, the first yarn 11 and the second yarn 12 should be composited together. On the one hand, after the position between the two G points is composited, even if the G point is not composited with the two yarns of the warp yarn 1, the mesh surface will not easily crack due to the barrier formed by the composite part between the two points. On the other hand, compared with the previous problem of easy peeling of the single-point connection, this composite structure forms a larger surface contact between the two yarns of the warp yarn 1, and the peeling problem of the warp yarn 1 and the weft yarn 2 is converted into the peeling problem between the first yarn 11 and the second yarn 12, thereby improving the connection stability between the warp yarn 1 and the weft yarn 2.

[0059] During implementation, the deniers of the first yarn 11 and the second yarn 12 are both 350-560 deniers, such as 400 deniers, 460 deniers, and 48 deniers. The two yarns can be equal or have a certain difference, and the difference does not exceed 30%, such as the first yarn 11 is 530 deniers and the second yarn 12 is 540 deniers. The tensile strength of the two yarns is 25-45N, and can be 50-80N after compounding. The weft yarn 2 mainly plays a connecting role, and its denier is not greater than the denier of any yarn. The binding net formed by the yarn with this structure and related parameters has a gram weight of 4.5-7.0g / m 2 The interval between adjacent warp yarns is 10 to 35 mm. When 1.23 m is used as the tensile test width, the tensile force that the warp direction can bear is not less than 270 kg.

[0060] Unless otherwise specified, the load-bearing tension is measured when the mesh width is 1.23m, that is, the load-bearing tension is the load-bearing capacity of the specified width, and the binding net is not required to be larger than 1.2m. For example, a 0.5m wide net can be arranged to 1.23m wide according to the existing warp spacing of the net surface, and its load-bearing tension is measured in the warp direction. For example, a 1.5m wide net can be cut to 1.23m wide 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 to 2 cm, or it can be longer or shorter. The weft yarn 2 is confined to 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 specific implementation, the elongation rates of the first yarn 11 and the second yarn 12 are approximately the same, and the difference is no more than 5%. Preferably, the two yarns are made of the same yarn. If one yarn has a certain elastic deformation during compounding, and the other yarn is in a non-stretched state, the warp yarn after compounding will have a certain curvature, and will not be able to resist the load under the same tensile condition, and it will be difficult to exert the maximum strength performance. Furthermore, the first yarn 11 and the second yarn 12 are generally compounded under the same tensioning force, and the first yarn 11 and the second yarn 12 do not undergo a large deformation during tensioning, so that the two yarns are compounded under the same tensile condition, and have an integrated effect after compounding.

[0063] In an optional manner, the width of the first yarn 11 and the second yarn 12 is 0.8-3 mm, and is commonly used in the range of 0.8-2.2 mm, such as 1.4 mm and 1.8 mm. The first yarn 11 and the second yarn 12 can have a certain width difference, but the width difference between the two is not greater than 1.2 mm. It can be further controlled within 0.6 mm to avoid affecting the composite effect due to one of the yarns being too thin.

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

[0065] As another embodiment, the two sides of the weft yarn 2 are respectively compounded with the first yarn 11 and the second yarn 12. When a single warp yarn 1 is compounded with the weft yarn 2, the force is converted to tearing perpendicular to the mesh surface, which is easy to peel off. After the warp yarn with a composite structure is used, the force at the intersection is converted to the force of the intersection and the continuous composite section, thereby improving the stability of the connection.

[0066] Based on the above structure, the weft yarn 2 mainly plays a connecting role to prevent the warp yarns 1 from spreading out, so the weft yarns can extend in a wave shape, such as Figure 3 As shown, the angle r between the weft yarn 2 and the warp yarn 1 can be 25°, 40°, or 60°. In order to save materials and not affect the force in the warp direction, in the unfolded state, the angle r between the weft yarn 2 and the warp yarn 1 is not greater than 55°, and can generally be controlled at 20° to 55°. When the warp is stretched and deformed, there can be more redundancy and less tearing of the intersection.

[0067] The part of the wave crest or trough formed by the weft yarn 2 turning back between the warp yarns 1, located outside the G point, is called the turning line 3, that is, the turning line 3 is formed at the direction change. The distance between the two G points of the turning line 3 can be adjusted differently according to needs. For the binding net for straw baling, as an embodiment, the distance between the two G points formed by the turning line 3 and the warp yarn 1 is 5 to 60 mm. By setting the spacing and the peak pitch, the density of the net shape can be adjusted.

[0068] In other embodiments, in combination Figure 5 , auxiliary yarns 4 are arranged between adjacent warp yarns 1, the auxiliary yarns 4 are arranged parallel to the warp yarns 1, and are hot-pressed and compounded with the weft yarns 2. In some application scenarios, the mesh density can be increased by adding auxiliary yarns 4, and the leakage-proof effect is good. During implementation, the auxiliary yarns 4 can be located on one side of the weft yarns 2; the auxiliary yarns 4 can be arranged only between 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 compounded between two layers of auxiliary yarns 4. There can be no difference between the auxiliary yarns and the warp yarns in terms of material and unit gram weight. The difference is that the warp yarn is the yarn where the bending connection point of the weft yarn is located, and the weft yarn and the auxiliary yarn are only connected in a straight line direction, and the weft yarn does not fold back at the auxiliary yarn.

[0069] In implementation, multiple sets of combing needles can also be used to form different weft yarn paths. For example, the warp yarns 1 are distributed in the form of large and small spacing intervals, such as Figure 7 As shown, b1 is a large pitch, and b2 is a small pitch, so the weft yarns in the large pitch b1 and the weft yarns in the small pitch b2 may not be parallel.

[0070] As an improvement, the weft yarn 2 may also adopt a larger wave crest pitch, and the two weft yarns may be arranged 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 net structure is shown, in which the weft yarn 2 is folded back and forth between two spaced warp yarns 1, each warp yarn 1 is connected to a folded weft yarn 2, and the weft span of the weft yarn 2 is 3 warp yarns 1. Warp yarns 1a and 1c form a fold angle 3a with weft yarn A; warp yarn 1b makes warp yarn 1a and warp yarn 1c form a gap, and warp yarn 1b intersects with weft yarn A. At the same time, warp yarn 1b forms a fold angle 3b with weft yarn B. In other embodiments, the number of warp yarns spaced between the folds of the same weft yarn does not exceed 3, so as to avoid forming a larger edge width and causing the edge to break easily. In specific use, it can also be implemented in combination with auxiliary yarn 4.

[0072] In combination with the above embodiments, as another implementation method of the non-woven binding net, the binding net is formed by arranging warp yarns 1 and weft yarns 2 vertically and horizontally; multiple warp yarns 1 are arranged in parallel along the warp direction, and the interval between adjacent warp yarns 1 is 10 to 40 mm, which can be further controlled to be 15 to 28 mm. The weft yarns 2 are folded back and forth between the warp yarns 1 and extend along the warp direction; the weft yarns 2 form a return line 3 at the direction change point, and the return line 3 intersects with the warp yarns 1 to form two G points, and the length of the return 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, and 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 composited by hot pressing so that the weft yarn 2 is fixed. The deniers of the first yarn 11 and the second yarn 12 are both 350-560 deniers, and the tensile strength is 25-45N. The tensile strength of the composite warp yarn 1 is greater than 50N. The denier of the weft yarn 2 is not greater than the denier of any yarn, for example, 150-300 deniers, and the weight of the binding net formed is 4.5-7.5g / m 2 .

[0074] The difference between the length of the return line 3 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 not greater than 25%. In order to achieve fast processing, the return line 3 is a reserved design, and this part of the return line 3 forms a closed loop, which can still prevent the weft yarn 2 from separating from the warp yarn 1 after the composite point of the weft yarn 2 is cracked. The reserved return line 3 can also adapt to the deformation of the warp yarn.

[0075] In another embodiment, the weft yarn 2 has a weft span of 4 warp yarns 1, and the angle between the weft yarn 2 and the warp yarn 1 is 25-50 degrees. Further, the denier of the weft yarn 2 is 150-350 denier, and the upper and lower sides of the weft yarn 2 are respectively compounded with the first yarn 11 and the second yarn 12.

[0076] The present embodiment provides a non-woven binding net roll, the mesh surface structure of the net roll adopts the aforementioned binding net.

[0077] As a specific implementation, the binding net roll includes a drum and the aforementioned binding net, and the binding net is wound on 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. In order to facilitate the use of taking and placing, the inner diameter of the drum is about 76mm. In order to have sufficient support force, the outer diameter of the drum can be about 88-100mm, such as 95mm, 98mm, which can be adjusted according to the length of the binding net carried and the material of the drum. The diameter of the net roll is the overall diameter measured when the binding net is wound on the drum, including the size of the drum. The drum is a metal drum or a non-metallic drum. As a specific implementation of non-metal, it can be a paper drum or a 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, so that the roll diameter can be smaller, and the overall diameter can be 1cm-1.5cm smaller than the non-metallic tube.

[0078] As a characteristic of the mesh roll, the overall appearance is flatter, so that it has a smaller thickness. When the length of the mesh roll is within the range of 3000-4000m, the diameter of the mesh roll is not greater than 23.5cm; when the length of the mesh roll is within the range of 4000-5000m, the diameter of the mesh roll is not greater than 25.5cm.

[0079] In one embodiment, the denier of the first yarn 11 and the second yarn 12 are both 350-560 denier, the tensile strength is 25-35N, the tensile strength of the two warp yarns after being combined is about 50-65N, and the weight of the binding net is 4.2-5.5g / m 2 , the tensile force that the net surface bears in the warp direction is 250-340kg. Specifically, the denser the warp yarns are arranged, the higher the tensile strength is, but the weight is also much greater. For bale nets, the tensile strength is generally required to be around 300kg.

[0080] The width W of the net roll can be adjusted according to the needs during processing, for example, 0.7m. Generally, the width of the net for bundling straw is 1.2-1.5m. As required by this scheme, the weight of the net roll is 25-56kg; the weight of the bundling net is 4.5-7.0g / m 2 The tension on the mesh surface in the warp direction is 250-340 kg. The tension here is expressed in weight units and can be obtained by mechanical test data conversion or gravity tensile test. In the mesh roll structure, the bonding mesh used adopts the structure obtained by the above-mentioned embodiment or a combination thereof.

[0081] In one embodiment, the interval between adjacent warp yarns 1 is 15-28 mm, for example, 23 mm, 25 mm, the angle r between the weft yarn 2 and the warp yarn 1 is not greater than 55°, and the weight of the binding net formed is 4.5-6.0 g / m 2The difference between the length of the return line 3 and the distance between its two connection points is a redundant length, and the percentage of the redundant length relative to the distance between the two connection points is less than 8%, thereby avoiding waste of materials.

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

[0083]

[0084] In the above table, double yarn means that the weft yarn is connected to 2 warp yarns in the weft direction; triple yarn means that the weft yarn is connected to 3 warp yarns in the weft direction; TAMA means TamaCycle Netwrap bale net product, RKW is the bale net product of rkw group, and both TAMA and RKW net types are made of similar Figure 1 The tensile strength refers to the minimum value that can be tolerated. 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 width of the binding net is approximately 1.23m.

[0085] According to the comparison of the above embodiments, the conventional warp knitting structure or the weft bonding structure has a large diameter due to the irregular structure or the use of a larger denier material to achieve the specified tension, which limits the length of the net roll. However, the scheme of the present application can significantly reduce the weight and reduce the overall size while maintaining the tension. For the net roll of the same size, it can have a longer length and reduce the replacement frequency.

[0086] The non-woven binding net provided by the present application divides the warp yarn into a first yarn and a second yarn, and the weft yarn is folded back and forth between the warp yarns along the warp direction, and the weft yarn is arranged between the first yarn and the second yarn, and the first yarn and the second yarn are compounded together on both sides of the connection point between the weft yarn and the warp yarn to form a three-layer structure, which has a similar weaving effect. The bonding net does not have a warp yarn winding structure, which saves more materials while ensuring strength, and can significantly reduce costs.

[0087] The present invention and its embodiments are described schematically above, and the description is not restrictive. The drawings show only one embodiment of the present invention, and the actual structure is not limited thereto. Therefore, if a person skilled in the art is inspired by it and designs a structural method and an embodiment similar to the technical solution without creativity without departing from the purpose of the invention, they shall all 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 vertically and horizontally; characterized in that: The plurality of 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, comprising a first yarn (11) and a second yarn (12) in a thin sheet shape, the weft yarn (2) is stacked between the first yarn (11) and the second yarn (12) in a thin sheet shape, and the lower surface of the first yarn (11) and the upper surface of the second yarn (12) are composited by hot pressing so that the weft yarn (2) is fixed; The deniers of the first yarn (11) and the second yarn (12) are both 350-560 deniers, and the tensile strength is 25-45N; the denier of the weft yarn (2) is not greater than the denier of any of the yarns, and the weight of the binding net formed is 4.5-7.0 g / m 2 The interval between adjacent warp yarns (1) is 10 to 35 mm; 1.23 m is used as the bearing tension test width, so that the bearing tension in the warp direction is not less than 270 kg.

2. A non-woven binding net according to claim 1, characterized in that: The elongation rates of the first yarn (11) and the second yarn (12) are substantially the same, and the difference between them is no more 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 0.8-3 mm, and the difference in width between the two is no more than 1.2 mm.

4. The non-woven binding net according to claim 1, characterized in that: 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, and on both sides of the warp direction of point G, the first yarn (11) and the second yarn (12) are combined together to restrict the warp movement of the weft yarn (2).

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

6. A non-woven binding net according to claim 4, characterized in that: The weft yarn (2) is folded back between the warp yarns (1) to form a folding line (3) at the direction change position, and the distance between the folding line (3) and the two G points formed by the warp yarns (1) is 5 to 60 mm.

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

8. A non-woven binding net according to any one of claims 1 to 6, characterized in that: The weft yarn (2) is folded back and forth between two warp yarns (1) that are spaced apart from each other, and the weft yarn (2) has a weft span of no more than 5 warp yarns (1).

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

10. A non-woven binding net, formed by warp yarns (1) and weft yarns (2) arranged vertically and horizontally; characterized in that: The plurality of 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 weft yarns (2) form a folding line (3) at the direction change position, 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; The warp yarn (1) adopts a double-layer composite structure, comprising 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 composited by hot pressing so that the weft yarn (2) is fixed; The denier of the first yarn (11) and the second yarn (12) are both 350-560 denier, the tensile strength is 25-45N, and the weight of the binding net formed is 4.5-7.0g / m 2 .

11. A non-woven binding net according to claim 10, characterized in that: The interval between adjacent warp yarns (1) is 15 to 28 mm, the angle between the weft yarns (2) and the warp yarns (1) is no greater than 55°, and the weight of the binding net formed is 4.5 to 6.0 g / m 2 .

12. The non-woven binding net according to claim 10, characterized in that: The difference between the length of the return line (3) and the distance between its two connection points is a redundant length, and the percentage of the redundant length to the distance between the two connection points is not greater than 20%.

13. The non-woven binding net according to claim 10, characterized in that: The weft yarn (2) has a weft span of no more than 5 warp yarns (1), and the angle between the weft yarn (2) and the warp yarn (1) is 25 to 50 degrees.

14. The non-woven binding net according to claim 10, characterized in that: The denier of the weft yarn (2) is 150 to 350 deniers, and the upper side and the lower side of the weft yarn (2) are respectively compounded with the first yarn (11) and the second yarn (12).

15. A non-woven binding net roll, characterized in that: The net surface structure of the net roll adopts the binding net structure according to any one of claims 1 to 14.

16. A non-woven binding net roll according to claim 15, characterized in that: The weight of the binding net is 4.2-5.5 g / m 2 , taking 1.23m as the bearing tensile test width, the bearing tensile force in the warp direction is 250~340kg.

17. The non-woven binding net roll according to claim 15, characterized in that: When the length of the net roll is within the range of 3000-4000 m, the diameter of the net roll is not greater than 23.5 cm; when the length of the net roll is within the range of 4000-5000 m, the diameter of the net roll is not greater than 25.5 cm.

18. The non-woven binding net roll according to claim 15, characterized in that: The binding net is wound on a reel, the diameter of the reel is 88-100 mm, and the reel is a non-metallic reel.

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