Dynamic ventilation-type agricultural shading net and method for forming the same
Patent Information
- Application Number
- CN202511195979.7
- Authority / Receiving Office
- CN · China
- Patent Type
- Patents(China)
- Current Assignee / Owner
- Filing Date
- 2025-08-26
- Publication Date
- 2026-09-22
- Estimated Expiration
- 2045-08-26
AI Technical Summary
编织时，有的采用由聚乙烯制成的丝线进行高密编织(如图1所示)，但是，由该丝线编织而成的遮阳网的网孔小，存在透风率低(透风率<35％)、风阻系数高(风阻系数≥1.8)的问题；有的采用普通纱线进行编织，由纱线编织而成的遮阳网透风率比聚乙烯丝线好(透风率>60％)，但遮光率又不足(遮光率<80％)
[0028]1、本发明动态透风式农业遮光网及其形成方法，形成的遮光网无风时遮光效果好，有风时又能透风，在动态风载作用下不易变形，破损率低，使用寿命长，降低使用成本。
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Figure CN120787703B_ABST
Abstract
Description
Technical Field
[0001] This invention relates to the field of shade net technology, and in particular to a dynamic, permeable agricultural shade net suitable for agricultural protection in windy climates of northern regions and its formation method. Background Technology
[0002] Shade nets are commonly used in agriculture and horticulture to protect plants. Traditional shade nets are mostly made of silk threads woven together in a grid-like structure. Some types use high-density weaving with polyethylene threads (such as...). Figure 1 As shown in the image, however, shade nets woven from this yarn have small mesh openings, resulting in low air permeability (air permeability <35%) and high wind resistance (wind resistance coefficient ≥1.8). Some shade nets are woven from ordinary yarn, which has better air permeability than polyethylene yarn (air permeability >60%), but insufficient shading (shading rate <80%). Therefore, neither of these two types of shade nets can meet the sunlight and air requirements of plants, especially during their flowering period. Furthermore, these shade nets are prone to structural deformation under dynamic wind loads, especially with a higher damage rate (up to 32%) under level 8 winds, typically requiring an annual replacement rate of over 65%, significantly increasing operating costs. Summary of the Invention
[0003] The purpose of this invention is to solve the above problems and provide a dynamic, permeable agricultural shading net and its formation method. The resulting shading net has a good shading effect when there is no wind, and can be permeable when there is wind. It is not easily deformed under dynamic wind load, has a low damage rate, a long service life, and reduces the cost of use.
[0004] To achieve the above-mentioned objectives of this invention, this invention provides a method for forming a dynamic, permeable agricultural shading net, comprising:
[0005] A chain structure is formed by weaving two strands of thread into a chain;
[0006] By weaving two strands of yarn into a chain to form a core layer, and forming multiple plush bodies that can swing relative to the core layer outside the core layer, a composite structure is formed through the core layer and the multiple plush bodies;
[0007] The resulting composite structure is used as either a warp or a weft, and the resulting chain structure or composite structure is used as another type of warp or weft, so as to form a shading net by weaving the warp and weft.
[0008] Preferably, when multiple plush bodies that can swing relative to the core layer are formed outside the core layer, multiple plush bodies can be arranged around the outer wall of the core layer, or multiple plush bodies can be arranged on both sides of the outer wall of the core layer, or multiple plush bodies can be arranged on one side of the outer wall of the core layer.
[0009] Preferably, when the shading net is formed by weaving warp and weft, an anti-slip coating is applied at the intersection of the warp and weft to prevent relative slippage between them.
[0010] Preferably, when multiple plush bodies that can swing relative to the core layer are formed outside the core layer, the extension direction of the plush bodies is perpendicular to the extension direction of the core layer.
[0011] Preferably, when multiple plush bodies that can swing relative to the core layer are formed outside the core layer, the extension direction of the plush bodies forms an angle greater than 0 degrees and less than 90 degrees with the extension direction of the core layer.
[0012] Preferably, the plush body comprises one or more downy hairs, with one end of the multiple downy hairs fixed together and the other end extending outward in the same direction.
[0013] Preferably, it further includes forming a sleeve for fitting over the core layer, and forming a plurality of plush bodies outside the sleeve that can swing relative to the sleeve.
[0014] Preferably, the diameter of the fibers forming the plush body is 15-25 micrometers, the length is 5-6 millimeters, and the flocking density on the core layer is 200-300 / cm². 2 .
[0015] Preferably, the chain structure or the core layer is woven from two strands of yarn with a diameter of 0.3 mm to 0.5 mm.
[0016] Furthermore, the present invention also provides a dynamic, permeable agricultural shading net formed by the method described above, comprising warp threads and weft threads woven together with the warp threads to form the shading net, wherein either the warp threads or the weft threads adopt a composite structure, and the other thread adopts a chain structure or a composite structure; the chain structure comprises two strands woven into a chain; the composite structure comprises a core layer and a plurality of pile bodies disposed outside the core layer that can swing relative to the core layer.
[0017] Preferably, the outer wall of the core layer is provided with a plurality of plush bodies, or a plurality of plush bodies are provided on both sides of the outer wall, or a plurality of plush bodies are provided on one side of the outer wall.
[0018] Preferably, an anti-slip coating is provided at the intersection of the longitude and latitude lines to prevent them from slipping relative to each other.
[0019] Preferably, the anti-slip coating is a silicone coating.
[0020] Preferably, the extension direction of the plush body is perpendicular to the extension direction of the core layer.
[0021] Preferably, the extension direction of the plush body forms an angle greater than 0 degrees and less than 90 degrees with the extension direction of the core layer.
[0022] Preferably, the plush body comprises one or more downy hairs, with one end of the multiple downy hairs fixed together and the other end extending outward in the same direction.
[0023] Preferably, the composite structure further includes a sleeve for fitting over the core layer, with one end of the plush body fixed to the outer wall of the sleeve.
[0024] Preferably, the diameter of the flock is 15-25 micrometers, the length is 5-6 millimeters, and the flocking density on the core layer is 200-300 / cm². 2 .
[0025] Preferably, the chain structure is woven from two strands of yarn with a diameter of 0.3 mm to 0.5 mm.
[0026] Preferably, the warp density in the shading net is 8-12 threads / cm, and the weft density is 6-10 threads / cm.
[0027] Compared with existing technologies, the dynamic ventilation-permeable agricultural shading net and its formation method of the present invention have the following advantages:
[0028] 1. The present invention provides a dynamic, permeable agricultural shading net and its forming method. The resulting shading net has a good shading effect when there is no wind, and can be permeable when there is wind. It is not easily deformed under dynamic wind load, has a low damage rate, a long service life, and reduces the cost of use.
[0029] 2. The present invention relates to a dynamic permeable agricultural shading net and its forming method. In the warp or weft threads used to weave the shading net, at least one thread includes a chain structure and a pile body, giving the shading net dynamic permeability. Specifically, the pile body can naturally extend to form a shading layer when there is no wind load, covering the mesh openings and improving the shading effect. When there is a wind load, it can sway with the wind, exposing the mesh openings and allowing wind to pass through, thus improving ventilation. Furthermore, at least one warp or weft thread includes a chain structure and a pile body, which results in high structural stability of the formed shading net. Under dynamic wind load, the shading net is not easily deformed or damaged, greatly increasing its service life and reducing operating costs.
[0030] The present invention will now be described in detail with reference to the accompanying drawings. Attached Figure Description
[0031] Figure 1 This is a schematic diagram of the structure of existing agricultural shading nets;
[0032] Figure 2 This is a partial schematic diagram of the first structure when the warp or weft of the agricultural shading net formed by the method of the present invention adopts a composite structure;
[0033] Figure 3This is a partial schematic diagram of the second structure when the warp or weft of the agricultural shading net formed by the method of the present invention adopts a composite structure;
[0034] Figure 4 This is a partial schematic diagram of the third structure when the warp or weft of the agricultural shading net formed by the method of the present invention adopts a composite structure;
[0035] Figure 5 This is a partial schematic diagram of the fourth structure when the warp or weft of the agricultural shading net formed by the method of the present invention adopts a composite structure;
[0036] Figure 6 This is a partially enlarged schematic diagram of the first structure that can be used to form the plush structure by the method of the present invention;
[0037] Figure 7 This is a partially enlarged schematic diagram of a second structure that can be used to form the plush structure by the method of the present invention;
[0038] Figure 8 This is a partial structural diagram of the chain-like structure used in the warp or weft of the agricultural shading net formed by the method of the present invention.
[0039] Figure 9 It is the meridian adopted Figure 8 The chain structure shown uses weft threads. Figure 2 A partial top view of the shading net formed by the woven composite structure shown;
[0040] Figure 10 This is a schematic diagram showing the deflection of the pile body relative to the chain structure on the shading net under wind load.
[0041] Figure 11 Both longitude and latitude lines are adopted Figure 2 A top view of a portion of the woven light-blocking net shown in the composite structure;
[0042] Figure 12 It is the meridian adopted Figure 4 The composite structure shown uses weft threads. Figure 8 A top view of a portion of the woven blackout net shown in the diagram;
[0043] Figure 13 Both longitude and latitude lines are adopted Figure 4 A top view of a portion of the woven light-blocking net shown in the composite structure;
[0044] Figure 14 This is a flowchart of the method for forming the dynamic permeable agricultural shading net of the present invention. Detailed Implementation
[0045] like Figure 14The diagram shows a flowchart of the method for forming the dynamic, permeable agricultural shading net of the present invention. As can be seen from the diagram, the method for forming the dynamic, permeable agricultural shading net of the present invention includes:
[0046] A chain structure is formed by weaving two strands of thread into a chain;
[0047] By weaving two strands of yarn into a chain to form a core layer, and forming multiple plush bodies that can swing relative to the core layer outside the core layer, a composite structure is formed through the core layer and the multiple plush bodies;
[0048] The resulting composite structure is used as either a warp or a weft, and the resulting chain structure or composite structure is used as another type of warp or weft, so as to form a shading net by weaving the warp and weft.
[0049] Specifically, the method for forming the dynamic ventilation-type agricultural shading net of the present invention includes:
[0050] S01, By weaving two strands of thread into a chain to form a chain structure;
[0051] Two strands of yarn are woven into a chain to form a chain structure, such as using a single-needle hook weaving method. Each strand can be made of high-modulus polyethylene monofilament (tensile strength ≥4.5 cN / dtex) with a diameter of 0.3-0.5 mm. Weaving two strands into a chain structure increases the strength of the warp or weft yarns, preventing them from being easily torn or damaged.
[0052] Furthermore, the high-modulus polyethylene monofilament used in the chain structure can also contain 0.5% hindered amine light stabilizer and conductive carbon fiber (3%), to achieve the antistatic effect of the formed chain structure and make the surface resistance ≤10. 8 Ω.
[0053] S02. By weaving two strands of yarn into a chain to form a core layer, and forming multiple plush bodies that can swing relative to the core layer outside the core layer, a composite structure is formed through the core layer and the multiple plush bodies.
[0054] First, two strands of yarn are woven into a chain to form the core layer. For example, a chain structure can be formed using a single-needle hook method. Each strand can be made of high-modulus polyethylene monofilament (breaking strength ≥ 4.5 cN / dtex) with a diameter of 0.3-0.5 mm. It is evident that the core layer has the same structure and formation method as the aforementioned chain structure.
[0055] Furthermore, the high-modulus polyethylene monofilament used in the core layer can also contain 0.5% hindered amine light stabilizer and conductive carbon fiber (3%), to achieve the antistatic effect of the formed chain structure, making the surface resistance ≤10. 8 Ω.
[0056] After the core layer is formed, multiple pile bodies that can swing relative to the core layer are formed outside the core layer to form a composite structure through the core layer and the multiple pile bodies. Different methods can be used to form the pile bodies outside the core layer. For example, multiple groups of pile bodies can be spaced apart along the length of the core layer, each group including multiple pile bodies arranged around the outer wall of the core layer. Alternatively, multiple pile bodies can be arranged in a spiral pattern on the outer wall of the core layer. Or, two rows of pile bodies can be arranged on each side of the outer wall of the core layer, each row including multiple pile bodies spaced apart along the length of the core layer. The two rows of pile bodies on each side of the outer wall of the core layer can be symmetrical relative to the core layer (e.g., ...). Figure 5 As shown), it can also be set in a staggered manner (e.g. Figure 4 (As shown). Alternatively, a row of plush materials may be provided on one side of the outer wall of the core layer, including multiple plush materials spaced apart along the length of the core layer.
[0057] When multiple fluffy bodies that can swing relative to the core layer are formed outside the core layer, the extension direction of each fluffy body can be perpendicular to the extension direction of the core layer (e.g., Figure 4 , Figure 5 As shown), it can also form an angle greater than 0 degrees and less than 90 degrees with the extension direction of the core layer (e.g. Figure 2 , Figure 3 (As shown). A plush body can include a single hair (such as...). Figures 2-5 As shown), it can also include multiple hairs (such as...). Figure 6 , Figure 7 As shown), when multiple fibers are included, a structure can be adopted with one main fiber 1a and multiple secondary fibers 1b surrounding the main fiber (as shown). Figure 6 As shown, one end of the multiple fibers is fixed together and connected to the core layer, while the other end extends outward in the same direction.
[0058] The flocking material can be made of high-modulus polyethylene (such as the high-modulus polyethylene monofilament mentioned above) or polyester. The flock diameter is between 15 and 25 micrometers, and the length is between 5 and 6 millimeters. The flocking density on the core layer is 200-300 fibers / cm. 2 The pile can be fixed to the outside of the core layer by gluing, forming a pile body, by knotting, or by weaving short piles of a certain length between adjacent stitches of the two strands of the core layer. By forming multiple pile bodies outside the core layer, a light-blocking surface can be created.
[0059] When the plush body includes multiple downy hairs, multiple short downy hairs 1c (e.g., branched hairs extending outwards from the primary or secondary downy hairs) can also be provided on the primary or secondary downy hairs of the multiple downy hairs. Figure 7(as shown), thereby further increasing the light-blocking surface that the plush body can form.
[0060] Furthermore, in addition to forming the plush material directly on the core layer, the present invention may also include the following steps: forming a sleeve for fitting outside the core layer, and forming a plurality of plush materials that can swing relative to the sleeve on the outer wall of the formed sleeve. Then, the sleeve with the plush materials can be fitted outside the core layer.
[0061] During manufacturing, the plush body formed by one or more of the above-mentioned fibers can be fixed to the outside of the sleeve in advance by gluing to form a sleeve with the plush body.
[0062] When multiple plush elements are formed on the outside of the sleeve, the extension direction of each plush element can be perpendicular to the extension direction of the sleeve, or it can form an angle greater than 0 degrees and less than 90 degrees with the extension direction of the sleeve. The plush elements on the outer wall of the sleeve can be formed using the various arrangements described above for forming plush elements on the core layer. When the sleeve with the plush elements is fitted onto the core layer, the two can be connected by an interference fit, or by applying adhesive to the outside of the core layer and then pressing the sleeve onto the core layer, thus fixing the sleeve and core layer together and preventing relative movement.
[0063] The composite structure, which forms the plush material outside the core layer or the plush material outside the sleeve and then the core layer is fitted inside the sleeve, has a larger light-blocking area than the chain structure without plush material. This allows the light-blocking net with the composite structure to improve its light-blocking effect.
[0064] S03. Use the formed composite structure as either a warp or a weft, and use the formed chain structure or composite structure as another type of warp or weft, to form a shading net by weaving the warp and weft.
[0065] After forming a composite structure including a core layer and a plush body, as well as a chain structure, the composite structure can be used as either a warp or a weft, and the chain structure or composite structure can be used as either a warp or a weft, thus forming a shading net by weaving the two types of threads (i.e., warp and weft).
[0066] Specifically, in forming the light-shielding net, either the warp or weft yarn can adopt the aforementioned composite structure, and the other yarn can adopt the aforementioned chain structure or composite structure. That is, the warp yarn can adopt the aforementioned chain structure woven from two strands, while the weft yarn can adopt a composite structure including the aforementioned core layer and multiple pile bodies, or it can adopt the aforementioned chain structure; or, the weft yarn can adopt the aforementioned chain structure woven from two strands, while the warp yarn can adopt a composite structure including the aforementioned core layer and multiple pile bodies, or it can adopt the aforementioned chain structure; or, both the warp and weft yarns adopt the aforementioned composite structure.
[0067] When weaving to form a shading net, the warp and weft can be woven using existing warp and weft weaving methods or heddle weaving techniques. The warp and weft are woven into a square or hexagonal mesh. During weaving, the warp density in the shading net is 8-12 threads / cm, the weft density is 6-10 threads / cm, and the mesh opening of the shading net should have an equivalent aperture of 6-8 mm.
[0068] Before, during, or after weaving the shading net, an anti-slip coating can be applied to the intersections of the warp and weft threads to prevent relative slippage. The coating can be applied manually or using existing coating machinery. The anti-slip coating can be a silicone coating with a thickness between 50-80 micrometers. This anti-slip coating effectively prevents relative slippage at the intersections of the warp and weft threads, improving the structural stability of the shading net and extending its service life.
[0069] Because at least one thread in the shading net formed by the method of this invention is a thread with a pile, and the pile fibers are long and thin with a relatively small diameter compared to the core layer, the pile fibers can swing relative to the core layer and undergo directional deflection under relatively small wind forces. Furthermore, the equivalent aperture of the shading net mesh is larger than the length of the pile fibers, providing space for the pile fibers to extend and sway at the mesh openings. In the absence of wind load, the pile fibers in the shading net can naturally extend relative to the core layer to form a shading layer, which can completely or partially block the corresponding mesh openings on the shading net (e.g., ...). Figure 7 , Figures 9-11 As shown), this improves the shading effect of the shading net; and when there is a wind load, the fibers in the shading net can be directionally deflected by the wind (as shown). Figure 10 (As shown) the mesh is exposed, allowing wind to pass through and thus improving the ventilation effect of the shade net.
[0070] Furthermore, the edges of the woven shade net can be reinforced, such as by using a 3cm wide PVC edging tape to wrap the edges, thereby increasing the tensile strength to ≥200N / cm.
[0071] Experiments have verified that, using the method of this invention, with one warp and one weft employing the aforementioned composite structure and the other the aforementioned chain structure, and using a heddle weaving process to form a shading net, when the warp density is 8-12 threads / cm and the weft density is 6-10 threads / cm, with a hexagonal mesh structure and an aperture of 6-8mm, the shading net can guarantee a shading rate of ≥95% under static conditions (i.e., no wind load), a dynamic shading rate of 82-90%, and a dynamic wind permeability coefficient of 0.25-0.85 (corresponding to wind speeds of 3-15m / s). Specifically, under dynamic wind load, when the wind speed is <3m / s, the pile naturally extends to form a continuous shading layer, and the light transmittance of the shading net is ≤5%, exhibiting good shading performance; when the wind speed is >5m / s, the pile deflects 60-75° with the wind direction, and the wind permeability area ratio of the shading net can reach 78-85%, exhibiting good wind permeability; when the critical wind speed reaches 8m / s, the structural deformation rate of the shading net is <3%. Under level 12 winds, the structural integrity of the shade netting remains >98%, demonstrating strong wind resistance. After 3000 hours of xenon lamp aging testing, its strength retention rate is 85%, equivalent to over 5 years of outdoor weather resistance, indicating a long service life.
[0072] In addition to providing the above-described method for forming a dynamic, permeable agricultural shading net, this invention also provides a dynamic, permeable agricultural shading net formed by the above method, such as... Figure 9 , Figures 11-13 The figures shown are schematic diagrams of different structures of the dynamic, permeable agricultural shading net formed by the method of the present invention. Figures 2-8 The figures shown are schematic diagrams of a portion of the warp or weft lines that can be used in this invention.
[0073] As shown in the figures, the dynamic permeable agricultural shading net of the present invention includes warp threads and weft threads woven with the warp threads to form the shading net. Either the warp or the weft thread adopts a composite structure, and the other thread adopts a chain structure or a composite structure. The chain structure includes two strands of thread woven into a chain. The composite structure includes a core layer and multiple pile bodies disposed outside the core layer that can swing relative to the core layer.
[0074] This invention relates to warp or weft threads used in weaving to form a light-shielding net. One type of thread employs a composite structure including a core layer and a pile body disposed outside the core layer, while the other type employs a chain structure or a composite structure. The pile body can naturally extend relative to the core layer to form a light-shielding layer when there is no wind load, thereby blocking the mesh openings of the light-shielding net (e.g., ...). Figure 7 , Figures 9-11 As shown), this improves the shading effect of the shading net; and when there is a wind load, the plush material can move in the same direction with the wind (such as...). Figure 10 As shown, the mesh openings are exposed, allowing wind to pass through and thus improving the ventilation effect of the shading net. This invention provides a shading net that combines shading and ventilation effects in response to changes in dynamic wind load, which is extremely beneficial to the growth of the plants covered by it.
[0075] Specifically, when the warp or weft of this invention adopts a chain structure 4, the chain structure can be adopted as follows: Figure 8 The structure shown includes two strands of yarn woven into a chain, such as using a single-needle hook weaving method. Each strand is a high-modulus polyethylene monofilament (tensile strength ≥ 4.5 cN / dtex) with a diameter of 0.3-0.5 mm. The chain-like structure of the two strands increases the strength of the warp or weft threads, preventing them from being easily torn or broken. This also results in high structural stability of the shade net, making it less prone to deformation and damage under dynamic wind loads, thus increasing its service life and reducing operating costs.
[0076] When the warp or weft of this invention adopts a composite structure, the composite structure can be as follows: Figures 2-5 Any of the structures shown includes: a core layer 2 and a plurality of plush bodies 1 disposed outside the core layer and oscillating relative to the core layer.
[0077] The core layer can adopt the aforementioned chain structure, i.e., it is woven into a chain by two strands of high-modulus polyethylene monofilaments with diameters of 0.3 mm to 0.5 mm. The arrangement of the plush material outside the core layer on its outer wall can be varied. For example, multiple sets of plush material can be spaced along the length of the core layer, each set including multiple plush materials arranged around the outer wall of the core layer. Alternatively, multiple plush materials can be arranged in a spiral pattern on the outer wall of the core layer. Or, two rows of plush material can be arranged on each side of the outer wall of the core layer, each row including multiple plush materials spaced along the length of the core layer. The two rows of plush material on each side of the outer wall of the core layer can be symmetrical relative to the core layer (e.g., ...). Figure 5 As shown), it can also be set in a staggered manner (e.g. Figure 4 (As shown). Alternatively, a row of plush materials may be provided on one side of the outer wall of the core layer, including multiple plush materials spaced apart along the length of the core layer.
[0078] The extension direction of the plush body can be perpendicular to the extension direction of the core layer (e.g., Figure 4 , Figure 5 As shown), it can also form an angle greater than 0 degrees and less than 90 degrees with the extension direction of the core layer (e.g. Figure 2 , Figure 3 As shown). In the design, the plush body may include a single hair (e.g., ...). Figures 2-5 As shown), it can also include multiple hairs (such as...). Figure 6 , Figure 7 As shown), when multiple fibers are included, a structure can be adopted with one main fiber 1a and multiple secondary fibers 1b surrounding the main fiber (as shown). Figure 6 As shown, one end of the multiple fibers is fixed together and connected to the core layer, while the other end extends outward in the same direction.
[0079] During production, the flocking can be made of high-modulus polyethylene or polyester, with a flock diameter of 15-25 micrometers and a length of 5-6 millimeters. The flocking density on the core layer is 200-300 / cm². 2 It can be fixed to the outside of the core layer by pasting, by knotting, or by hooking short fibers of a certain length between two adjacent stitches on the two strands of the core layer. This invention provides multiple pile bodies outside the core layer, which can form a light-shielding surface.
[0080] When the plush body of the present invention comprises multiple fibers, furthermore, multiple short fibers 1c (e.g., branched outwards) can be provided on the main fibers or secondary fibers of the multiple fibers. Figure 7 (as shown), thereby further increasing the light-blocking surface that the plush body can form.
[0081] Furthermore, the composite structure of the present invention may also include a sleeve 3 for fitting over the core layer, with one end of the pile of the aforementioned plush material fixed to the outer wall of the sleeve. During manufacturing, the aforementioned plush material, comprising one or more piles, can be fixed to the outside of the sleeve by adhesive bonding. The extension direction of the plush material can be perpendicular to the extension direction of the sleeve, or it can form an angle greater than 0 degrees and less than 90 degrees with the extension direction of the sleeve. The arrangement of the plush material on the outer wall of the sleeve can also adopt the various arrangements described above for the core layer. After fixing the sleeve and the plush material together, the sleeve is then fitted over the core layer. The two can be press-fitted together by applying adhesive to the outside of the core layer and then pressing the sleeve over it, so that the two can be fixed together and will not move relative to each other.
[0082] When forming the light-shielding net, either the warp or weft yarn can adopt the above-mentioned composite structure, and the other yarn can adopt the above-mentioned chain structure or composite structure. That is, the warp yarn can adopt the above-mentioned chain structure woven from two strands, while the weft yarn can adopt a composite structure including the above-mentioned core layer and multiple pile bodies, or it can adopt the above-mentioned chain structure; or, the weft yarn can adopt the above-mentioned chain structure woven from two strands, while the warp yarn can adopt a composite structure including the above-mentioned core layer and multiple pile bodies, or it can adopt the above-mentioned chain structure; or, both the warp and weft yarns adopt the above-mentioned composite structure.
[0083] During production, warp and weft weaving or heddle weaving can be used to weave square or hexagonal meshes using warp and weft threads. The warp density in the shading net is 8-12 threads / cm, the weft density is 6-10 threads / cm, and the mesh openings of the shading net have an equivalent aperture of 6-8 mm.
[0084] Furthermore, during or after the weaving of the shading net, an anti-slip coating can be applied at the intersection of the warp and weft threads to prevent relative slippage. The anti-slip coating can be a silicone coating applied to the intersection of the warp and weft threads, with a thickness of 50-80 micrometers. The anti-slip coating can effectively prevent relative slippage at the intersection of the warp and weft threads, improve the structural stability of the shading net, and extend its service life.
[0085] Because at least one thread forming the shading net is a thread with a pile, and the individual fibers of the pile are long and thin with a relatively small diameter compared to the core layer, the fibers can sway and deflect relative to the core layer under relatively small wind forces. Furthermore, the equivalent aperture of the shading net's mesh is larger than the length of the fibers, providing space for the fibers to extend and sway at the mesh openings. In the absence of wind load, the fibers in the shading net can naturally extend relative to the core layer to form a shading layer, completely or partially blocking the corresponding mesh openings (e.g., ...). Figure 7 , Figures 9-11 As shown), this improves the shading effect of the shading net; and when there is a wind load, the fibers in the shading net can be directionally deflected by the wind (as shown). Figure 10 (As shown) the mesh is exposed, allowing wind to pass through and thus improving the ventilation effect of the shade net.
[0086] Experiments have verified that a shading net is formed by using the aforementioned composite structure for one warp and the aforementioned chain structure for the other, woven using a heddle weaving process. With a warp density of 8-12 threads / cm and a weft density of 6-10 threads / cm, and a hexagonal mesh structure with an aperture of 6-8mm, the shading net can guarantee a shading rate of ≥95% under static conditions (i.e., no wind load), a dynamic shading rate of 82-90%, and a dynamic wind permeability coefficient of 0.25-0.85 (corresponding to wind speeds of 3-15m / s). Specifically, under dynamic wind load, when the wind speed is <3m / s, the fibers naturally extend to form a continuous shading layer, and the light transmittance of the shading net is ≤5%, demonstrating good shading performance. When the wind speed is >5m / s, the fibers deflect 60-75° with the wind direction, and the wind permeability area ratio of the shading net can reach 78-85%, demonstrating good wind permeability. At a critical wind speed of 8m / s, the structural deformation rate of the shading net is <3%. Under level 12 winds, the structural integrity of the shade netting remains >98%, demonstrating strong wind resistance. After 3000 hours of xenon lamp aging testing, its strength retention rate is 85%, equivalent to over 5 years of outdoor weather resistance, indicating a long service life.
[0087] Furthermore, during the manufacturing process of the warp and weft yarns of this invention, 0.5% hindered amine light stabilizer can be added to the monofilament, and conductive carbon fibers (3%) can be embedded to achieve antistatic properties (surface resistance ≤ 10). 8In addition, the edges of the woven shade net can be reinforced, such as by wrapping the edges with 3cm wide PVC edging tape, so that the tensile strength is ≥200N / cm.
[0088] Although the present invention has been described in detail above, the present invention is not limited thereto. Those skilled in the art can make modifications based on the principles of the present invention. Therefore, all modifications made in accordance with the principles of the present invention should be understood as falling within the protection scope of the present invention.
Claims
1. A method for forming a dynamic, permeable agricultural shading net, comprising: A chain structure is formed by weaving two strands of thread into a chain; The core layer is formed by weaving two strands of yarn into a chain, and multiple plush bodies are arranged around the outer wall of the core layer, or multiple plush bodies are arranged on both sides of the outer wall of the core layer, or multiple plush bodies are arranged on one side of the outer wall of the core layer, so as to form a composite structure through the core layer and multiple plush bodies. One end of the multiple plush bodies is fixed to the outer wall of the core layer, and the other end extends freely and can swing relative to the core layer. The resulting composite structure is used as either a warp or a weft, and the resulting chain structure or composite structure is used as either a warp or a weft, so as to form a light-shielding net by weaving the warp and weft, and to coat each intersection of the warp and weft with an anti-slip coating to prevent the two from slipping relative to each other. Among them, the equivalent aperture of the light-blocking net is larger than the length of the plush fibers, providing space for the fibers to extend and sway at the mesh openings; In the absence of wind load, the fibers in the shading net can naturally extend relative to the core layer to form a shading layer, completely or partially covering the corresponding mesh openings on the shading net, thus improving the shading effect of the shading net. In the presence of wind load, the fibers in the shading net can drift in the same direction with the wind and be deflected to expose the mesh openings, allowing the wind to pass through the mesh openings and thus improving the ventilation effect of the shading net.
2. In the forming method according to claim 1, when forming a plurality of plush bodies that can swing relative to the core layer outside the core layer, the extending direction of the plush bodies is perpendicular to the extending direction of the core layer.
3. In the forming method according to claim 1, when forming a plurality of plush bodies that can swing relative to the core layer outside the core layer, the extending direction of the plush bodies forms an angle greater than 0 degrees and less than 90 degrees with the extending direction of the core layer.
4. The forming method according to claim 1, wherein the plush body comprises one or more downy hairs, with one end of the multiple downy hairs fixed together and the other end extending outward in the same direction.
5. The forming method according to claim 4 further includes forming a sleeve for fitting over the core layer, and forming a plurality of plush bodies that can swing relative to the sleeve outside the sleeve.
6. The forming method according to claim 5, wherein the diameter of the fibers forming the plush body is 15-25 micrometers, the length is 5-6 millimeters, and the flocking density on the core layer is 200-300 / cm². 2 .
7. The forming method according to claim 6, wherein the chain structure or the core layer is woven from two strands of yarn with a diameter of 0.3 mm to 0.5 mm.
8. A dynamic, permeable agricultural shading net formed using the method described in any one of claims 1-7.
Citation Information
Patent Citations
Light-shielding net
JP2002112641A
Ventilation cloth manufacturing method having suede effect
TW201337060A