How to identify the quality of engineering plastic towline?

How to identify the quality of engineering plastic towline?

Listen: Holding a plastic towline in a hard place, the sound of nylon material is relatively blunt, and it feels dull; the sound of polypropylene is crisper and sweeter.

Look: Good plastic towline appearance is finer, the texture is fine, the color is round and smooth, the whole is more pleasing to the eye; the poor appearance looks rougher in work, the color is not uniform, the first impression is not good. In addition, a few more sections are placed on a smooth tabletop, and the good plastic towline is slightly tilted on both sides, and the poor sides are raised higher.

Touch: Touch the surface, edge and inner wall of the drag chain by hand. The good plastic towline has a smooth surface, no tie, and feels comfortable; the poor feeling surface is rough and uneven, and some places are more difficult to touch. In addition, it can be rotated by two sections, and the good rotation is flexible and convenient, without large friction; the poor is difficult to rotate, and the friction is strong.

搓: Use hard things to smash the surface of the engineering plastic towline. It is more laborious to poke out the pits, and the crumbs under the armpits are fine and powdery. Poorly easy to poke out the pits, the debris is granules. In the form of such materials, the new materials are usually made of recycled materials, which are quite different from the new materials in the degree of resistance.