fishing net, net for fishing. Fishing special tool construction material. More than 99% are processed from synthetic fibers. There are mainly nylon 6 or modified nylon monofilament, multifilament or multi monofilament, and fibers such as polyethylene, polyester, and polyvinylidene chloride can also be used. The nets used in fishery production include trawl nets, purse seine nets, cast nets, fixed nets and cages. Trawls and purse seines are heavy-duty nets used in marine fisheries. The size of the mesh is 2.5 to 5 cm, the diameter of the net rope is about 2 mm, and the weight of the net is several tons or even dozens of tons. Usually, a pair of tugboats are used to pull and chase the fishing group separately, or a light boat is used to lure the fish into the group and encircle it. Casting nets are light-duty nets for fishing in rivers and lakes. The mesh size is 1 to 3 cm, the diameter of the net rope is about 0.8 mm, and the net weight is several kilograms. Fixed nets and cages are fixed nets for artificial culture in lakes, reservoirs or bays. The size and specifications vary according to the fish being raised, and the fish are kept in a certain water area to avoid escaping. Fishing nets serve many purposes.
With the development of fishery, the objects of fishing and hunting are not only fish, but the tools of fishing are also advancing with the times. Fishing nets are functionally divided into gill nets, drag nets (trawl nets), purse seine nets, net construction and net laying.
Commonly used fishing nets are classified as: pull nets, drift nets, stick nets. It is required to have high transparency (part of nylon mesh) and strength, good impact resistance, abrasion resistance, mesh dimensional stability and softness, and appropriate elongation at break (22% to 25%). It is processed by monofilament, multifilament twisted thread (with knotted net) or monofilament warp weaving (raschel, which belongs to non-knotted net), one heat treatment (fixed nodule), dyeing and secondary heat treatment (fixed mesh size). The raw materials for weaving fishing nets are mainly 15-36 strands of 210-denier nylon, polyester multifilament and ethylene monofilament with a diameter of 0.8-1.2 mm. Weaving methods include knotting, twisting and warp knitting.
What are the main uses of fishing nets?
1. Fishing nets are the production tools of fishermen, which can be used to catch fish, shrimps and crabs on the bottom of the water.
2. Fishing nets can also be used as a protective tool, such as shark prevention nets, which can be used to protect dangerous large fish such as sharks.
3. Fishing nets can create a visual art effect.
Post time: Sep-05-2022