How to distinguish the materials of ultra-fine polyester, non-woven fabrics and double-sided Velvet

How to distinguish the materials of ultra-fine polyester, non-woven fabrics and double-sided velvet? Cloth can be distinguished according to the following characteristics. Features of ultra-fine polyester: soft and light. Put the super fiber cloth on the ordinary cloth clothes. In the vertical state of the clothes, the super fiber is also attached to the clothes, which means that the fiber is thin enough to be a super fiber cloth. The real super fiber is slowly unfolded after being kneaded into a ball, while the fake super fiber is quickly fluffy. Features of non-woven fabrics: pay attention to whether the light transmission performance of the cloth surface is consistent ( This is an important and simple way to judge the uniformity of cloth surface). Then spread on a flat ground, uniform products, cloth surface should not fluctuate. Observe whether the cloth surface is shiny. There is no fiber floating on the surface, if it is dull or floating, it is probably produced by returning materials. Tear a piece of cloth, burn it completely with fire, observe the burning residue, good product, the residue is small and flat, the secondary material is produced, and the residue has a lot of tiny particle dust. Features of double-sided Velvet: soft to the touch, plump texture, good warmth retention, comfortable to wear, but the disadvantage is that the hair damage the structure of some fibers, so the strength will be greatly affected.