Warp-knitting-like bonding net and net roll structure

Abstract

The invention discloses a warp-knitting-like bonding net and a net roll structure, and belongs to the field of net knitting processing. According to the warp-knitting-like bonding net, the adopted warp yarn comprises the first yarn and the second yarn which are located on the same warp direction line, the weft yarn reciprocates between the warp yarn in the warp direction, 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 the two sides of the connecting point. According to the scheme, a warp winding structure does not exist, and more materials are saved under the condition that the strength is guaranteed; in addition, the weft yarn is clamped between the two pieces of yarn, the warp yarn is difficult to strip from the weft yarn, and damage is not prone to occurring.

Description

Technical Field

[0001] The invention relates to the technical field of netting processing, and more particularly to a warp knitting-like bonding net and a net roll structure. Background Art

[0002] Most of the current bale nets are woven by warp knitting machines. Unlike ordinary woven nets, bale nets will bear greater forces along the warp direction when in use, and only need to be connected together in the weft direction. Therefore, the structural characteristics of bale nets are large meshes, which require a certain load-bearing strength. Under a certain strength, how to reduce the amount of materials used becomes the biggest profit point.

[0003] Figure 1 The main bale net structure currently on the market was displayed, which includes several warp chains parallel to the warp direction. Each warp chain is composed of chain links formed by winding warp threads in a circle. Weft inserts are arranged between two adjacent warp chains along the weft direction, thus forming a mesh structure. Because it is a warp knitted structure, there are loop structures between the coil links in each warp chain, and between the weft insert and the coil links. After being subjected to tension, the mutual pulling between the winding structures will cause large node losses and a large waste of materials.

[0004] In some improvement schemes, a bale net structure with a lining warp is used, such as the applicant's previous improvement scheme, patent number: 202211046218.1. The woven net provided in this scheme is based on the original structure and has an additional lining warp that does not coil, thereby improving strength. Although this structure can reduce the amount of material while ensuring strength, the coil still requires a large amount of material.

[0005] In order to reduce the amount of materials used, reference can be made to the existing flat-laid mesh structure, such as the mesh cloth disclosed in patent 201210372860.9, which is a structure in which the warp and weft are laid flat and bonded. Although the warp is not knotted in a circle, the flat-laid structure is difficult to meet the strength requirements, because when this regular rectangular mesh structure is deformed by force in the warp direction, the hot pressing or bonding connection points are easily damaged due to uneven deformation. If more wefts are added, it will not save materials.

[0006] In addition, the structure in patent 201210372860.9 is that the warp and weft are laid flat in two perpendicular directions, that is, the yarn is laid from left to right in one direction first, and then bonded. Compared with the winding weaving process, the efficiency is lower. Therefore, this kind of adhesive weaving is basically not used in the weaving net for binding. Summary of the invention

[0007] 1. Technical problem to be solved by the invention

[0008] The problem to be solved by the present invention is how to reduce the amount of materials and reduce costs while ensuring the strength of the mesh. A warp knitted bonded mesh and mesh roll structure are provided. The scheme adopts a double-layer bonding structure, which improves the bearing strength without weaving and winding, saves materials, and reduces costs.

[0009] 2. Technical solution

[0010] In order to achieve the above object, the technical solution provided by the present invention is:

[0011] A warp knitted bonded web of the present invention comprises a plurality of warp yarns arranged in parallel along the warp direction, wherein the warp yarns comprise a first yarn and a second yarn located on the same warp line;

[0012] A weft yarn that folds back and forth along the warp direction is arranged between adjacent or spaced warp yarns and is arranged between a first yarn and a 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.

[0013] Furthermore, in the warp direction, the contact surfaces of the first yarn and the second yarn are heat-pressed and composited, and the composite warp yarn has a flat surface.

[0014] Furthermore, the weft yarn is folded back between the warp yarns to form a folding line at the direction change position, the folding line and the warp yarn form two connection points, and the first yarn and the second yarn between the two connection points are heat-pressed and composited.

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

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

[0017] Furthermore, the weight of the bonding mesh is 4.0 to 12 g / m 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 0.8-5 mm.

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

[0021] Furthermore, auxiliary yarns are arranged between adjacent warp yarns, the auxiliary yarns are arranged parallel to the warp yarns, and are hot-pressed and composited with the weft yarns.

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

[0023] The auxiliary yarns include upper and lower auxiliary yarns that are heat-pressed and composited, the weft yarns are located between the upper and lower auxiliary yarns, and the upper and lower auxiliary yarns form a continuous heat-pressed composite section on both sides of the connection point between the auxiliary yarns and the weft yarns.

[0024] A warp knitted bonding mesh of the present invention comprises:

[0025] Warp yarns, wherein a plurality of warp yarns are 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, and the contact surfaces of the first yarn and the second yarn are heat-pressed and composited;

[0026] Weft yarns, the weft yarns are folded back and forth between adjacent or spaced warp yarns, and at least one of the upper surface or the lower surface of the weft yarns is hot-pressed and composited with the first yarn or the second yarn at the connection point between the weft yarns and the warp yarns;

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

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

[0029] Furthermore, the weft yarns between different warp yarns are arranged in parallel on the same warp length.

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

[0031] Furthermore, the weft yarns are folded back between the warp yarns to form a folding line at the direction change position, and the folding line and the warp yarns form two connection points, and the distance between the two connection points is 3 to 40 mm.

[0032] Furthermore, 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 no more than 20%.

[0033] A warp-knitted bonded mesh of the present invention comprises a plurality of warp yarns arranged in parallel along the warp direction, and weft yarns folded back and forth between the warp yarns, wherein the warp yarns comprise a first yarn and a second yarn located on the same warp line; on both sides of the connection point between the warp yarn and the weft yarn, the first yarn and the second yarn form a bonding composite section, so that the weft yarn is fixed between the first yarn and the second yarn.

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

[0035] Furthermore, the spacing of the warp yarns is 20 to 160 mm; the weight of the bonding mesh is 4.5 to 10 g / m 2 .

[0036] Furthermore, it also includes a reel, on which the adhesive web is wound.

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

[0038] A net roll comprises a drum and an adhesive net, wherein the adhesive net is wound on the drum; the length of the adhesive net is 3600 to 8000 m; the diameter of the net roll formed on the drum is 20 to 35 cm; the weight of the net roll is 25 to 56 kg; the adhesive net comprises a plurality of warp yarns arranged in parallel along the longitudinal direction, and weft yarns folded back and forth between the warp yarns, and the warp yarns and the weft yarns are connected by bonding.

[0039] In some embodiments, the bonding mesh adopts the structure of the bonding mesh described above. It can form a three-layer structure, and the upper layer is warp yarn, the middle layer is weft yarn, and the lower layer is warp yarn, and the warp yarn of the upper layer and the warp yarn of the lower layer are adhered together, thereby limiting the weft yarn from being separated from between the warp yarns.

[0040] 3. Beneficial effects

[0041] Compared with the prior art, the technical solution provided by the present invention has the following beneficial effects:

[0042] The warp yarns used in the warp knitted bonding net of the present invention include a first yarn and a second yarn located on the same warp line, and the weft yarns are folded back and forth between the warp yarns along the warp direction, and the weft yarns are 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. In this scheme, there is no structure of warp yarn winding, which saves more materials while ensuring strength; in addition, the weft yarns are clamped between the two yarns, and the warp yarns are difficult to be separated from the weft yarns and are not easy to be damaged. BRIEF DESCRIPTION OF THE DRAWINGS

[0043] Figure 1 A woven mesh formed by warp knitting, in which the warp threads are repeatedly wound in a radial direction and the weft threads are connected in the wound circles.

[0044] Figure 2 In the weaving process, the weft yarn passes through the upper and lower warp yarns.

[0045] Figure 3 A schematic diagram of an implementation scheme for reciprocatingly arranging weft yarns between adjacent warp yarns; the weft yarns are arranged according to the same rule;

[0046] Figure 4The diagram is a schematic diagram of the connection structure of the first warp yarn, the second warp yarn and the weft yarn, and it can be seen that the weft yarn is sandwiched between the first warp yarn and the second warp yarn;

[0047] Figure 5 Another implementation structure is shown, in which auxiliary yarns are provided, and the auxiliary yarns are located between adjacent warp yarns to enhance the connection with the weft yarns;

[0048] Figure 6 Different implementation structures of weft yarns are shown. In this embodiment, the spacing of warp yarns is not completely equal, and the shapes formed by the weft yarns after moving the same spacing are different;

[0049] Figure 7 A schematic diagram showing a warp yarn composite method;

[0050] Figure 8 A schematic diagram of an implementation method of auxiliary yarn;

[0051] Fig. 9 A schematic diagram of the structure in which the weft yarns are folded back between alternate warp yarns;

[0052] Fig.10 A schematic diagram of a bonding mesh in use.

[0053] Explanation of the symbols in the schematic diagram:

[0054] 1. Warp yarn; 11. First yarn; 12. Second yarn;

[0055] 2. Weft yarn;

[0056] 3. Turning line;

[0057] 4. Auxiliary yarn; 41. Upper auxiliary yarn; 42. Lower auxiliary yarn. DETAILED DESCRIPTION

[0058] 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.

[0059] 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.

[0060] Figure 1 The present invention is a schematic diagram of the structure of an existing bale net using a weaving process, wherein the warp threads are repeatedly woven in a loop along the warp direction and the warp threads are connected together by weft threads.

[0061] Figure 1 The weaving method shown is warp knitting, which uses warp winding to fix the weft. This method uses one or more sets of parallel yarns to form a knitted fabric on all the working needles of the machine fed in the warp direction. This method is called warp knitting, and the knitted fabric formed is called warp knitted fabric. The warp knitting process is characterized by the use of one or more sets of parallel yarns, which are looped on all the working needles of the machine fed in the warp direction to form a fabric. Warp knitting uses more material in the warp direction due to repeated winding.

[0062] Figure 2 The structure formed by the weft weaving method is shown. During the weft weft weaving 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 weft weaving. 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 bond the connection with the weft yarn to improve the stability of the connection.

[0063] Figure 2 The schematic diagram of the mesh structure with vertical distribution of the central warp and weft can only be implemented on larger equipment, with low efficiency and easy cracking, and is not suitable for mesh with large bearing capacity in the warp direction. Since this mesh structure is a relatively mature technology and its production is relatively stable, how to further reduce the material consumption and save costs on the basis of ensuring the strength of the existing mesh is the problem that this application considers to solve.

[0064] exist Figure 3 A warp knitted bonding mesh is shown in the figure. It can be seen that the warp direction is perpendicular to the weft direction. A plurality of parallel warp yarns 1 are distributed in the warp direction. There are reciprocating weft yarns 2 between adjacent warp yarns 1. While folding, the weft yarns 2 extend along the warp direction to connect two adjacent warp yarns 1 together.

[0065] This embodiment provides a warp knitted bonded mesh, an implementation structure such as Figure 3 As shown, it includes a plurality of warp yarns 1 arranged in parallel along the longitudinal direction, and a weft yarn 2 is provided between adjacent warp yarns 1 and folded back and forth along the longitudinal direction, similar to a sawtooth structure, which is mainly used to connect the warp yarns 1 to maintain the integrity of the mesh surface.

[0066] Combination Figure 4, wherein 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 arranged 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 as follows Figure 7 As shown, the radial dashed line segment represents the uncompounded end, and the non-dashed line portion represents the hot-pressed composite portion.

[0067] The first yarn 11 and the second yarn 12 are compounded on both sides of the connection point, so that the weft yarn 2 is clamped between the first yarn 11 and the second yarn 12, thereby improving the overall strength. By compounding the first yarn 11 and the second yarn 12, more connection points can be formed, and the mesh surface also has a certain force strength in the vertical direction, and it is not easy to peel off.

[0068] Compared with the traditional warp knitting implementation, the structural warp yarn of this implementation does not need to be repeatedly woven in circles, thereby saving a lot of materials. At the same time, there is no situation where the strength is reduced due to winding. Compared with the weft weaving method, the weft yarn only moves in a small range in the horizontal direction of the static load, and the width in the weft direction is controlled by multiple weft needles. The number of warps can be selected according to the width requirements. Compared with the warp and weft weaving method, the processing technology is relatively simple, the cost is lower, and the production speed is faster. It takes into account the high efficiency of similar warp knitting and reduces the use of materials.

[0069] Although bonding connection of braided nets is also used in the prior art, it is mostly used together with the beating method to further enhance the connection. It is conceivable to directly use hot pressing or bonding methods instead of weaving. For binding braided nets, the main force is borne in the direction of the warp yarns, and the weft yarns only play a simple connecting role. Therefore, the force is mainly in the direction of the warp yarns. If only the bonding connection method is used, the warp yarn and the weft yarn will be connected on one side. However, when the warp yarn is subjected to force, its deformation will cause the distance between the two warp yarns to increase or decrease. This change will be detached at the connection between the warp yarn and the weft yarn, that is, the warp yarn 1 can be easily peeled off from the weft yarn 2. This is why existing braided nets must be processed by braiding or beating. The main purpose is to increase the connection strength and prevent detachment.

[0070] In this embodiment, in order to solve the peeling problem, the upper and lower bonding method is adopted for fixing. The connection point of the weft yarn 2 is limited between the hot pressing composite sections, and it is difficult to separate from the warp yarn 1, thereby ensuring that the weft yarn 2 will not be easily peeled off and damage the integrity of the mesh surface. It is worth noting that compared with only setting a single warp yarn 1 with higher strength on one side of the weft yarn 2, the use of this method has a certain loss of tensile strength in the warp direction and is more complicated in terms of process; however, in the direction perpendicular to the mesh surface, the connection strength with the weft yarn 2 is greatly improved.

[0071] 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 to 2 cm, and 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, such as Figure 7 shown. Figure 7 The dotted line in the warp yarn direction represents the non-composite connection part, and the dashed line represents the composite part.

[0072] In another embodiment, in the warp direction, the contact surface of the first yarn 11 and the second yarn 12 is hot-pressed and composited, that is, the first yarn 11 and the second yarn 12 are composited as a whole, which can cross the warp direction. The two are composited together and can bear the load at the same time, and have higher strength. Furthermore, the composite warp yarn 1 is a flat surface. The first yarn 11 and the second yarn 12 are generally composited under the same tensioning force, and the first yarn 11 and the second yarn 12 do not undergo significant deformation during tensioning, so that the two yarns are composited under the same tensile conditions, and have an integrated effect after composite.

[0073] 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 bending and will not be able to resist the load under the same tensile conditions, making it difficult to exert the maximum strength performance.

[0074] For the convenience of processing, the weft yarn 2 is folded back between the warp yarns 1 to form a folding line 3 at the direction change point, and the folding line 3 forms two connection points with the warp yarn 1. Between the two connection points, the first yarn 11 and the second yarn 12 are hot-pressed and compounded together, so as to prevent the folding line 3 from being separated from between the first yarn 11 and the second yarn 12.

[0075] The warp yarn 1 or weft yarn 2 used can be polyethylene, polypropylene, or a monofilament yarn or a film yarn made of a mixed material of polyethylene and polypropylene. In other embodiments of making a net for different purposes, other materials can also be used without specific restrictions.

[0076] In different embodiments, the denier of the two warp yarns 1 can be in the range of 200 denier to 800 denier. When it is close to 200 denier, it is used in the case where the warp bearing capacity is low, and when it is around 700 denier, it can be used in the case where the force strength is high. The weft yarn 2 mainly plays a connecting role, and the denier can be in the range of 100 denier to 500 denier.

[0077] Furthermore, the denier of the first yarn 11 and the second yarn 12 is 350-650 denier, such as 400 denier and 520 denier; the denier of the weft yarn 2 is 150-350 denier, such as 200 denier and 280 denier. When used for bale net, the weight of the bonding net is 4.0-12 g / m 2 , for example 5g / m 2 , 7g / m2 , 9g / m 2 The spacing of warp yarn 1 and weft yarn 2 can be adjusted to meet the needs of different situations. In some embodiments, the spacing of warp yarn 1 is 20 to 100 mm, such as 35 mm, 56 mm, and 80 mm.

[0078] In some practicable embodiments, the tensile strength of the first yarn 11 and the second yarn 12 is 20-50N, 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, so that suitable materials of the warp yarn 1 and the weft yarn 2 can be selected.

[0079] Optionally, the width of the first yarn 11 and the second yarn 12 is 0.8-3.5 mm, for example, 1.2 mm, 2.5 mm. Within this range, it is more suitable for bundling. When the width is 2.5-8 mm, it can be used for sunshade nets, etc. The widths of the first yarn 11 and the second yarn 12 can be the same or different. In order to increase the strength perpendicular to the mesh surface, the difference between the first yarn 11 and the second yarn 12 can generally be selected from a smaller range. For example, in some embodiments, the width difference between the first yarn 11 and the second yarn 12 is not greater than 1.5 mm. The smaller the width difference, the larger the contact area between the two, and the higher the connection strength.

[0080] In other embodiments, in combination Figure 5 , auxiliary yarns 4 are arranged between adjacent warp yarns 1, the auxiliary yarns 4 are arranged in parallel with 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 prevention effect is good. In 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.

[0081] Combination Figure 8 In one embodiment, the auxiliary yarn 4 includes an upper auxiliary yarn 41 and a lower auxiliary yarn 42 which are heat-pressed and composited, and the weft yarn 2 is 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 have no difference in material and unit 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 is only connected to the auxiliary yarn in a straight line direction, and the weft yarn does not fold back at the auxiliary yarn.

[0082] The auxiliary yarn 4 can be arranged in the middle area of ​​two warp yarns 1 to increase the strength. A plurality of auxiliary yarns 4 can also be arranged close to the warp yarns 1. The material of the auxiliary yarn 4 can be polyethylene, polypropylene, or a monofilament yarn or a film yarn made of a mixed material of polyethylene and polypropylene, or other monofilament yarn or film yarn materials. In some embodiments, the auxiliary yarn 4 is made of the same material as the warp yarn 1 and has the same denier.

[0083] In another embodiment, different from the above, the weft yarn 2 is folded back and forth between the warp yarns 1 that are spaced apart, and there is a weft yarn folded back on each warp yarn 1. The spaced apart here means that there are other warp yarns between the two, which is different from the adjacent relationship. Take the spaced apart warp yarn as an example.

[0084] like Fig. 9 As shown, in one conceivable embodiment, the warp yarns 1a, 1c and the weft yarn A form a fold angle 3a; the warp yarn 1b makes the warp yarn 1a and the warp yarn 1c form a gap, and the warp yarn 1b intersects with the weft yarn 2. At the same time, the warp yarn 1b and the weft yarn B form a fold angle 3b. The interval between the warp yarns of the same weft yarn does not exceed 2, so as to avoid the formation of a large edge width and the edge being easily broken. In specific use, it can also be implemented in combination with auxiliary yarns.

[0085] Another embodiment provides a warp knitted bonded mesh, comprising warp yarns 1 and weft yarns 2, wherein a plurality of warp yarns 1 are arranged in parallel along the warp direction, and the warp yarns 1 include a first yarn 11 and a second yarn 12 located on the same warp line, and the contact surfaces of the first yarn 11 and the second yarn 12 are hot-pressed and composited. The weft yarns 2 are folded back and forth between adjacent warp yarns 1, and at the connection point between the weft yarns 2 and the warp yarns 1, the upper surface of the weft yarns 2 is hot-pressed and composited with the first yarn 11, and the lower surface of the weft yarns 2 is hot-pressed and composited with the second yarn 12.

[0086] The “same warp line” does not require that the first yarn 11 and the second yarn 12 completely overlap, as long as the two have a composite surface with a certain width.

[0087] 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 bonding web, 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 at 200-580 denier, and the denier of the weft yarn 2 is 100-350 denier.

[0088] Furthermore, the breaking elongation of the warp yarn 1 is controlled at 45% to 80%, such as 45% to 50%, 50% to 65%, and 70% to 80%. The elongation is an important indicator for measuring the plastic deformation capacity of a material. Since the warp needs to bear tensile force, a certain elongation makes the warp yarn less likely to break. It can also have a higher elongation, but it will reduce the strength. When used to bind hard 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.

[0089] Combination Figure 3In some embodiments, the weft yarns 2 between different warp yarns 1 are arranged in parallel on the same warp length. In this way, during processing, the weft yarn 2 feeding needle swings left and right at the same time, and the requirements for the driver are relatively simple.

[0090] 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 6 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.

[0091] In terms of material size, the width of the first yarn 11 and the second yarn 12 is 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 the range of 1.5 mm.

[0092] The weft yarn 2 is folded back between the warp yarns 1, forming a folding line 3 at the direction change point, and the folding line 3 forms two connection points with the warp yarn 1. If it is used as a sunshade net, the required spacing is relatively dense, which can be 0.5-3mm; when it is used as a bale net, the spacing can be relatively large. Generally, the spacing between two connection points can be 3-60mm, such as 5mm, 12mm, 23mm, 33mm, 40mm.

[0093] In combination with the above embodiments, 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 20%, such as 1.5%, 2.2%, and 8%. The redundant length is formed to maintain continuous processing and does not have the effect of increasing strength. If the redundant length is large, more materials will still be wasted.

[0094] In combination with the above embodiments, as an alternative, a warp knitted bonded mesh is provided, wherein the first yarn 11 and the second yarn 12 are bonded together. Specifically, the bonded mesh comprises a plurality of warp yarns 1 arranged in parallel along the warp direction, and a weft yarn 2 folded back and forth between the warp yarns 1, wherein the warp yarn 1 comprises 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 yarn 1 and the weft yarn 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.

[0095] In addition to hot pressing and laminating, bonding can also be performed by gluing. That is, the connecting surface of the first yarn 11 and the second yarn 12 is coated with viscose, and the contact surfaces of the two are bonded together. At the same time, the weft yarn 2 is also fixed between the first yarn 11 and the second yarn 12 by bonding. During bonding, the first yarn 11 and the second yarn 12 are compounded under the same tension to form a straight warp yarn 1, and both can provide tension at the same time to exert a composite effect. For the weft yarn 2, the weft yarn 2 is arranged in parallel on the same warp length segment. The spacing of the warp yarn 1 can be 60mm, 120mm, and 180mm; the gram weight of the bonding mesh is 4.5-10g / m 2 Compared with the hot pressing lamination method, the adhesive bonding method will increase the weight to a certain extent, and the use of adhesive will have a certain raw material cost.

[0096] In traditional bonded meshes, including hot pressing and gluing forms, most of them still use the idea of ​​weaving to process the entire mesh, that is, the warp yarns are interlaced between the weft yarns, or one warp yarn is located above the weft yarn, and the other warp yarn is located below the weft yarn. When compounding, it is only hot pressed or glued at the connection point, and the staggered weaving structure is used to bear the force perpendicular to the mesh surface.

[0097] Combination Fig.10 The present embodiment provides a mesh roll structure, comprising a roll and a bonding net, wherein the bonding net is wound on the roll; the length of the bonding net is 3600 to 8000 m; the diameter D of the mesh roll formed on the roll is 20 to 35 cm; the weight of the mesh roll is 25 to 56 kg; and the width W can be adjusted during processing as needed. The bonding net comprises a plurality of warp yarns 1 arranged in parallel along the longitudinal direction, and weft yarns 2 folded back and forth between the warp yarns 1, wherein the warp yarns 1 and the weft yarns 2 are connected by bonding.

[0098] In the mesh roll structure, the bonding mesh used adopts the structure obtained by the above-mentioned embodiments or a combination thereof.

[0099] The quasi-warp knitted bonding 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.

[0100] 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 warp knitted bonded mesh, characterized in that: It comprises a plurality of warp yarns (1) arranged in parallel along the warp direction, and the warp yarns (1) comprise a first yarn (11) and a second yarn (12) located on the same warp line; A weft yarn (2) is provided between adjacent or spaced warp yarns (1) and is folded back and forth in the warp direction. The weft yarn (2) is provided between a first yarn (11) and a second yarn (12). On both sides of a 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.

2. The warp knitted bonded mesh according to claim 1, characterized in that: In the warp direction, the contact surfaces of the first yarn (11) and the second yarn (12) are heat-pressed and composited, and the composite warp yarn (1) is a flat surface.

3. The warp knitted bonded mesh according to claim 1, 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 point. The folding line (3) and the warp yarn (1) form two connection points. The first yarn (11) and the second yarn (12) between the two connection points are heat-pressed and composited.

4. The warp knitted bonded mesh according to claim 1, characterized in that: The warp yarn (1) or weft yarn (2) is a monofilament yarn or a membrane yarn made of polyethylene or polypropylene or a mixed material of polyethylene and polypropylene.

5. A warp knitted bonded mesh according to any one of claims 1 to 4, characterized in that: The deniers of the first yarn (11) and the second yarn (12) are 350 to 650 deniers; the denier of the weft yarn (2) is 150 to 350 deniers.

6. The warp knitted bonded mesh according to claim 5, characterized in that: The weight of the bonding net is 4.0 to 12 g / m 2 .

7. The warp knitted bonded mesh according to claim 5, characterized in that: The tensile strength of the first yarn (11) and the second yarn (12) is 20 to 50 N, and the tensile strength of the warp yarn (1) is 1.5 to 3.0 times that of one of the yarns.

8. The warp knitted bonded mesh according to claim 5, characterized in that: The width of the first yarn (11) and the second yarn (12) is 0.8-5 mm.

9. The warp knitted bonded mesh according to claim 8, characterized in that: The width difference between the first yarn (11) and the second yarn (12) is 0 to 2.0 mm.

10. The warp knitted bonded mesh according to claim 1, characterized in that: 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 composited with the weft yarns (2).

11. The warp knitted bonded mesh according to claim 10, characterized in that: The auxiliary yarn (4) is located on one side of the weft yarn (2); or: The auxiliary yarn (4) comprises an upper auxiliary yarn and a lower auxiliary yarn which are heat-pressed and composited, the weft yarn (2) is located between the upper auxiliary yarn and the lower auxiliary yarn, and on both sides of the connection point between the auxiliary yarn (4) and the weft yarn (2), the upper auxiliary yarn and the lower auxiliary yarn form a continuous heat-pressed composite section.

12. A warp knitted bonded mesh, characterized in that: include: Warp yarns (1), wherein a plurality of warp yarns (1) are arranged in parallel along a warp direction, and the warp yarns (1) include a first yarn (11) and a second yarn (12) located on the same warp line, and contact surfaces of the first yarn (11) and the second yarn (12) are hot pressed and laminated; A weft yarn (2), wherein the weft yarn (2) is folded back and forth between adjacent or spaced warp yarns (1), and at a connection point between the weft yarn (2) and the warp yarn (1), at least one of an upper surface or a lower surface of the weft yarn (2) is heat-pressed and composited with a first yarn (11) or a second yarn (12); The deniers of the first yarn (11) and the second yarn (12) are 200 to 580 deniers; the denier of the weft yarn (2) is 100 to 350 deniers.

13. The warp knitted bonded mesh according to claim 12, characterized in that: The breaking elongation of the warp yarn (1) is 45%-80%.

14. The warp knitted bonded mesh according to claim 12, characterized in that: The weft yarns (2) between different warp yarns (1) are arranged in parallel on the same warp length.

15. The warp knitted bonded mesh according to claim 12, characterized in that: The widths of the first yarn (11) and the second yarn (12) are 0.8 to 3.8 mm; the width difference between the first yarn (11) and the second yarn (12) is 0 to 1.5 mm.

16. The warp knitted bonded mesh according to claim 12, 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. The folding line (3) and the warp yarn (1) form two connection points, and the distance between the two connection points is 3 to 60 mm.

17. The warp knitted bonded mesh according to claim 16, 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%.

18. A warp knitted bonded mesh, characterized in that: The invention comprises a plurality of warp yarns (1) arranged in parallel along the warp direction, and a weft yarn (2) folded back and forth between the warp yarns (1), wherein the warp yarns (1) comprise 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 bonding composite section, so that the weft yarn (2) is fixed between the first yarn (11) and the second yarn (12).

19. The warp knitted bonded mesh according to claim 18, characterized in that: In the same warp length section, the weft yarns (2) are arranged in parallel.

20. The warp knitted bonded mesh according to claim 18, characterized in that: The spacing of the warp yarns (1) is 20 to 160 mm; the weight of the bonding mesh is 4.5 to 10 g / m 2 .

21. The warp knitted bonded mesh according to claim 18, characterized in that: Also included is a reel on which the bonding web is wound.

22. The warp knitted bonded mesh according to claim 18, characterized in that: The first yarn (11) and the second yarn (12) are combined under the same tension to form a straight warp yarn (1).

23. A net roll, characterized in that: It includes a reel and a bonding net, wherein the bonding net is wound on the reel; The length of the bonding net is 3600 to 8000 m; the diameter of the net roll formed on the drum is 20 to 35 cm; the weight of the net roll is 25 to 56 kg; the bonding net comprises a plurality of warp yarns (1) arranged in parallel along the longitudinal direction, and weft yarns (2) folded back and forth between the warp yarns (1), and the warp yarns (1) and the weft yarns (2) are connected by bonding.

24. A warp knitted bonded mesh according to claim 23, characterized in that: The bonding web adopts the structure described in any one of claims 1 to 22.

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