What Are The Reasons For The Uneven Hardness Of Non Woven Fabrics Under The Same Processing Conditions?

Nonwoven fabrics are divided into two categories: thin and thick. The weight of the thin type is generally 20 - 100 g / m ( used as clothing lining decorative cloth, handkerchiefs, feminine hygiene products, etc. ). The thick type is used as flakes, carpets, filter materials, geotextiles ( roadbed cloth ), etc. Non woven fabrics can also be used to make special - purpose materials such as heat insulation, breathability, heat resistance, wear resistance, sound insulation, shock resistance, anti - virus, and radiation protection.

1. Due to the uneven blending of low melting point fibers and conventional fibers, the part with higher low melting point content is harder, and conversely, the part with lower content is softer.

2. In addition, the melting of low melting point fibers is not completely easy to cause the occurrence of softer non woven fabrics.
3. The high shrinkage rate of the fiber will also cause the problem of uneven softness and hardness of the Non Woven Fabric Roll.