Many manufacturers give their product a specific commercial trade name. For example, the term "nylon" is in fact a commercial trade mark used instead of the polyamide. Moreover to be imputrescible, the synthetic fibers show many advantages compared to the natural fibers :

• Better resistance
• Lighter and highly waterproof

THE MATERIAL CHOICE

According to the kind of gear you want to build, the choice of appropriate material is made according to the following criteria:

• The species you want to fish
• The kind and the dimensions of the gear to build
• Different fishing ground
• The fishing requirement, the dimensions, the power of the boats used, and the kind of equipment
• The price and the material availability, the fishermen's habits and customs.

The ideal material that could satisfy all our needs doesn't exist, that's why we must effectuate a choice according to our specific needs.

It is therefore essential to know all the specific characteristics of the different materials available on the market. In fact, when ordering a wall of webbing at a retailer, it is very important to provide judicious specifications:

• The kind of gear to build
• The size of the mesh
• The kind of fiber
• The twine diameter
• The net color
• The net dimensions

CHOICE OF THE NETTING TWINE FOR THE FISHING NETS.

There are many systems when choosing netting twine in the making of fishing nets:

• The meter per kilogram ( M/kg)
• The yard per pound ( Yd/LB )
• The international system ( Den )
• The millimeter system ( D/mm )

In this catalogue, the Denier system, will be used for the nylon twine and nets, and the diameter/ millimeter for the polyethylene twine. The Tex system will be used for certain kinds of trawls.

THE INTERNATIONAL SYSTEM

This system is based on the weight per unit of length measured in "deniers" . It is a weight in grammes of 9,000 meters long of twine. For example, the expression 210 dens, known by all the fishermen, indicates the common fiber we use to manufacture netting twine for fishing nets, a length of this fiber weighs 210 grammes, For example: the twine 210/12 is a twine used to make up gillnets. Its designation is then 210X3X4, and is explained like that: the netting yarn is made of three strands and the four means that each of those strands is made of 4 fibers.

THE DIAMETER / MILLIMETER SYSTEM:

The polyethylene twines have a bigger diameter than those in nylon. Those twines will be listed by their diameter which will be read in millimeter. The diameters vary from 0.05 mm. to 6. mm. The biggest twines will be considered in the rope category.

EQUIVALENCE OF DIFFERENT SYSTEMS TO IDENTIFY TWINE

 

M/K	Y/D	DENIER	TEX	M/D
13300	6750	210/3	75	0,30
6450	3225	210/6	155	0,40
2125	1063	210/18	470	0,72
1055	528	210/36	945	1,15