1. Fishing nets are fishermen's production tools that can be used to catch underwater fish, shrimp, and crabs.
2. Fishing nets can also be used as a protective tool, such as shark nets, to protect dangerous large fish such as sharks.
3. Fishing nets can create visual artistic effects
Extended Data
The main fishing gear used in fishery production include lift net, stick net, push net, arch pocket net, ground net, insert net, grab net, stick net, pull net, drift net, trawl net, catch net, spin net, tension net, fishing hook, pick clam pole, fishing basket, foil, river seine, row net, copy net, call net, hang net, slide foil net, crab basket, crab dumpling, etc.
Fishing net production method:
1. Knotting method
"It is a traditional method of making fishing nets, which are made by knotting warp threads and weft threads in a shuttle. The nodules are four times the diameter of the net rope and protrude from the plane of the net clothing.". This kind of net is called a knot net. Nodules collide with the fish and the ship's side during netting, causing both fish injury and net wear. Due to the smooth and elastic chemical fibers, nodules are prone to looseness and uneven mesh.
2. Twisting method
"Two sets of yarns are twisted simultaneously by a machine and pass through each other at the intersection point to form a net. This type of net is called a twisted non knotted net.". Due to the fact that the yarn at the mesh node is not bent, and the mesh garment is flat, reducing friction. However, the efficiency of the twisting machine is low, the preparation process is complex, and the number of lateral meshes is limited. It is only suitable for weaving nets with large mesh sizes.