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

Abstract

The invention provides a method for preparing hexagonal mesh polythene warp-knitting net for a deep-water net box and a deep-water net bag, relating to the preparation of webbing for deep-water net box and net bag; the problem to be solved is to improve strength performance of the polythene warp-knitting net for deep-water net box and net bag, exchange performance of internal and external waters and fishing adaptability. The technical proposal comprises that high-density polyethylene is used as raw material to prepare the high-strength fishing polyethylene monofilament with the diameter of 0.20mm and hexagonal warp-knitting mesh shapes by a high-temperature high-time self-reinforced technique; the method is characterized in that weft-lining wreathing empirical coefficient of hexagonal mesh polyethylene warp-knitting net is 0.160-0.200; the wreathing number is equal to the product of strand number and wreathing empirical coefficient, the weft-lining empirical coefficient is 0.400-0.500, the weft-lining number is equal to the product of the strand number and the weft-lining empirical coefficient and the weft-lining number is an even number. The method is used for preparing hexagonalmesh polythene warp-knitting net for deep-water net box and net bag.

Description

Technical field: [0001] The invention relates to a method for manufacturing net clothes for net bags in deep-water net cages. Background technique: [0002] Deep-water net cage is a complete set of intensive marine fish breeding equipment, which has the advantages of small impact on the environment, good quality of adult fish and high production efficiency. The development of deep-water cages in my country is relatively fast. At present, the number of deep-water cages in the country has reached more than 3,200. However, some problems that need to be solved have also been exposed during the development of deep-water cages, such as high-performance polyethylene warp knitting for mesh bags. There is a lack of research on net materials, insufficient basic theoretical data, a single variety of materials, and poor research and development of new materials for high-performance polyethylene warp-knitted nets for net bags. The net clothes for net bags of deep-water cages are importan...

AI Technical Summary

Problems solved by technology

The monofilaments used in the processing and production of existing rhombic mesh polyethylene warp knitting nets are mainly ordinary polyethylene monofilaments, and the weaving process is relatively simple; The strength of the braided net is also low; the existing deep-water cage mesh bags use diamond-shaped polyethylene warp-knitted nets to easily cause the mesh to close when the flow rate is high, resulting in poor drainage of the cage and weakened water exchange between the inside and outside, which affects the cultured fish. In severe cases, it may even lead to the death of farmed fish; in addition, according to the needs of the structural adjustment and development of my country's fishery industry, the development of deep-water cage culture has become an inevitable trend. The market potential of high-performance polyethylene warp-knitted net materials for deep-water cages Big

If we can improve the strength of the net and solve the problem that the diamond mesh is easy to close when the flow rate is high by using high-performance hexagonal mesh polyethylene warp-knitted mesh without changing the number of strands of the net, then we can use high-performance six Angular mesh polyethylene warp-knitted nets are used to meet the urgent needs of fishery projects. Because diamond-shaped mesh polyethylene warp-knitted nets have certain defects and limitations in the production of deep-water cage culture, their safety and fishery adaptability are poor. The performance is also difficult to meet the needs of large-scale and modern deep-water cages and special deep-water operations