Method for preparing hexagonal mesh polythene warp-knitting net for deep-water net box and net bag

[0006] Example 1: High-performance Hexagonal Mesh Polyethylene Warp Knitted Net for Manufacture of 54 Strands of Deepwater Cage Net Bags: Using ordinary HDPE as raw material, high-strength fishing polyethylene fiber with a diameter of 0.20mm is prepared by high-temperature and high-stretching self-reinforcement technology The breaking strength of monofilament is about 50% higher than that of the excellent grades of polyethylene monofilament for fishing in the SC5005 standard. This monofilament is used as high-performance hexagonal mesh polyethylene warp knitting net for processing 54 strands of deep-water net cage nets. Base material for nets.

[0007] According to formula (1) ~ formula (3), determine the process parameters for processing 54-strand deep-water cage net bag with high-performance hexagonal mesh polyethylene warp knitting net: loop forming experience coefficient κ 1 Take 0.185, the number of loops A takes 10, the experience coefficient of weft insertion K 2 Take 0.444 and the number of weft insertions B takes 24.

[0008] A=N×K 1 (1)

[0009] In the formula: A-the number of loops used for weaving (A generally takes an even number);

[0010] N——The number of polyethylene warp knitting nets (N is a positive integer);

[0011] K 1 ——The experience coefficient of loop formation, 0.160≤K 1 ≤0.200.

[0012] B=N×K 2 (2)

[0013] In the formula: B——the number of weft inserts for weaving (B must be an even number);

[0014] N——The number of polyethylene warp knitting nets (N is a positive integer);

[0015] K 2 —— Experience coefficient of weft insertion, 0.400≤K 2 ≤0.500.

[0016] N=3A+B (3)

[0017] In the formula: N——the number of polyethylene warp knitting nets (N is a positive integer);

[0018] A——The number of loops used for weaving (A generally takes an even number);

[0019] B——The number of weft insertion for weaving (B must be an even number).

[0020] Cylindrical high-strength fishing polyethylene monofilament is divided and warped according to the number of loops or weft inserted; special weaving process (loop forming experience coefficient κ 1 Take 0.185, weft insertion experience coefficient κ 2 Take 0.444, the number of loops A is 10, the number of weft inserts B for weaving nets is 24) and the hexagonal mesh structure, the high-strength fishing polyethylene monofilament is woven into 54 deep-water net box nets by warp knitting machine High-performance hexagonal mesh polyethylene warp knitting net for bags. The mechanical test results show that, under the same conditions, the mesh strength of the 54-strand high-performance hexagonal mesh polyethylene warp-knitted net for deep-water cage nets is stronger than that of the 54-strand ordinary polyethylene diamond mesh in the GB/T 18673 standard. The netting index is increased by 30.5%, and the longitudinal breaking strength of the mesh is increased by 15.3% compared to the 54-strand ordinary ethylene fiber diamond mesh warp knitting index in the GB/T 18673 standard. In addition, the practical experience of deep-water cage aquaculture production shows that the 54-strand high-performance hexagonal mesh polyethylene warp-knitted net for deep-water cage nets of the present invention will not be closed when the flow rate is high, and the mesh will be rectangular, and the use area will be similar. At the same time, it uses less thread than 54-strand rhombic mesh polyethylene warp-knitted net clothing, and when the vertical shrinkage coefficient of the net is large, its force is better than 54-strand rhombic mesh polyethylene warp-knitted net clothing.

[0021] Example 2: Production of 60 strands of high-performance hexagonal mesh polyethylene warp-knitted net for deep-water net cage nets: ordinary HDPE is used as raw material, and high-strength fishing polyethylene with a diameter of 0.20mm is prepared by high-temperature and high-stretching self-reinforcement technology The breaking strength of monofilament is about 50% higher than that of the superior grades of polyethylene monofilament for fishing in the SC 5005 standard. This monofilament is used as a high-performance hexagonal mesh polyethylene warp knitted net for processing 60 strands of deep-water net cage nets. Base material for weaving net.

[0022] According to the formula (1) ~ formula (3) in Example 1 to determine the process parameters for processing 60 strands of deep-water cage net bags with high-performance hexagonal mesh polyethylene warp knitting net (such as loop formation experience coefficient κ 1 Take 0.200, the number of loops A is 12, the experience coefficient of weft insertion K 2 Take 0.400, and the number of weft inserts B takes 24).

[0023] Cylindrical high-strength fishing polyethylene monofilament is divided and warped according to the number of loops or weft inserted; special weaving process (loop forming experience coefficient κ 1 Take 0.200, weft insertion experience coefficient K 2 Take 0.400, the number of loops A is 12, the number of weft inserts B for weaving nets is 24) and the hexagonal mesh structure, the high-strength fishing polyethylene monofilament is woven into 60 strands of deep-water net box net by warp knitting machine High-performance hexagonal mesh polyethylene warp knitting net for bags. The mechanical test results show that under the same conditions, the 60-strand high-performance hexagonal mesh polyethylene warp-knitted mesh for deep-water cage net bags of the present invention is stronger than the 60-strand ordinary polyethylene diamond mesh in the GB/T 18673 standard. The index of the mesh warp knitting net is increased by 29.9%, and the longitudinal breaking strength of the mesh is 18.0% higher than that of the 60-strand ordinary polyethylene diamond mesh warp knitting net in the GB/T 18673 standard. In addition, the practical experience of deep-water cage aquaculture production shows that the 60-strand high-performance hexagonal mesh polyethylene warp-knitted net for deep-water net-cage net bags of the present invention will not be closed when the flow rate is high, and the mesh will be rectangular, and the area of ​​use is different. At the same time, it uses less thread than 60-strand rhombic mesh polyethylene warp-knitted net clothing, and when the vertical shrinkage coefficient of the net is large, its force is better than 60-strand rhombic mesh polyethylene warp-knitted net clothing.

[0024] Example 3: High-performance Hexagonal Mesh Polyethylene Warp Knitted Net for Manufacture of 55-strand Deepwater Cage Net Bags: Using ordinary HDPE as raw material, high-strength polyethylene fiber with a diameter of 0.20mm is prepared by high-temperature and high-stretching self-reinforcement technology The breaking strength of monofilament is about 50% higher than that of SC 5005 standard for fishing polyethylene monofilament. This monofilament is used as high-performance hexagonal mesh polyethylene warp knitting net for processing 55 strands of deep-water cage nets. Base material for weaving net.

[0025] According to the formula (1) ~ formula (3) in Example 1 to determine the process parameters (such as loop forming experience coefficient κ) for processing 55 strands of high-performance hexagonal mesh polyethylene warp knitting net for deep-water cage net bags 1 Take 0.200, the number of loops A takes 11, the experience coefficient of weft insertion K 2 Take 0.400, and the number of weft inserts B takes 22).

[0026] Tube-packed high-strength fishing polyethylene monofilament is divided and warped according to the number of loops or weft inserted; special weaving process (loop forming experience coefficient κ 1 Take 0.200, the number of loops A takes 11, the experience coefficient of weft insertion K 2Take 0.400, the number of weft inserts B is 22) and hexagonal mesh structure. The high-strength polyethylene monofilament for fishing is woven by warp knitting machine into 55 strands of high-performance hexagonal mesh polyethylene warp for deep-water net cage net bags. Netting. The mechanical test results show that under the same conditions, the 55-strand high-performance hexagonal mesh polyethylene warp-knitted mesh for deep-water cage net bags of the present invention is stronger than the 55-strand ordinary polyethylene diamond mesh in the GB/T 18673 standard. The index of the warp knitting net is increased by 31.1%, and the longitudinal breaking strength of the mesh is increased by 8.4% compared with the 55-strand ordinary polyethylene rhombic net in the GB/T 18673 standard. In addition, the practical experience of deep-water cage aquaculture production shows that the 55-strand high-performance hexagonal mesh polyethylene warp-knitted net for deep-water cage net bags produced by the present invention will not be closed when the flow rate is high, and the mesh will not be closed but will be rectangular. When the area is the same, it uses less thread than the 55-strand rhombic mesh polyethylene warp-knitted mesh net. When the vertical shrinkage coefficient of the net is large, its force is better than 55-strand rhombic mesh polyethylene warp-knitted net netting. .

[0027] The invention effectively combines the new high-strength polyethylene monofilament material for fishing, special weaving technology and hexagonal mesh structure to produce high-performance hexagonal mesh polyethylene warp for deep-water net cage net bags suitable for fishery production. The function of knitting net is to improve the strong performance, internal and external water exchange performance and fishing adaptability of the existing polyethylene warp knitting net for deep-water net cage net bags.

[0028] Therefore, the 54-strand, 60-strand, and 55-strand high-performance hexagonal mesh polyethylene warp knitting net for deep-water cage nets produced by the present invention is suitable for fishery production, and it is not only better than the traditional ordinary polyethylene diamond mesh warp knitting The net has the strong advantage of the mesh, and can improve the internal and external water exchange performance of the mesh for the deep-water net cage net, ensuring the safety of the deep-water net cage and the adaptability for fishing.