Fishing nets are functionally divided into gill nets, drag nets (trawl nets), purse seine nets, net construction and net laying. High transparency (part of nylon mesh) and strength, good impact resistance, abrasion resistance, mesh size stability and softness, and proper cracking elongation (22% to 25%) are required. Twisted by monofilament and multifilament (with netting)
Fishing net concentrates or monofilaments are processed by weaving (raschel, is a knotless net), primary heat treatment (fixed nodules), dyeing and secondary heat treatment (fixed mesh size).
Can be used for drift net fishing, trolling, spearfishing, bait fishing and set fishing. Or become the raw material for the production of net boxes, fishing cages and other catching supplies.
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 for capture 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 the fishing group separately, or the light boat is used to lure the fish in the group and encircle it. Casting nets are light nets for catching 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 artificially raised fixed nets in lakes, reservoirs or bays. The size of the standard varies according to the fish that are raised, and the fish are kept in a certain water area to prevent them from escaping.
Post time: Aug-11-2022