As people's preference for hydrophilic nonwovens（PP non woven fabric factory） increases, a variety of non-woven fabrics are produced. To keep it from fading, the color fastness of non woven printing can be maintained as follows:

1. For dyes with hydrophilicity, use dyes with good oxidation resistance; for protein fibers, dyes with good resistance to reduction or weak oxidizing additives should be used; other fibers should be dyed according to the influence of fading.

2. In order to enhance the photooxidative stability of the azo group in the molecular structure of the hydrophilic non woven（spunbonded non woven fabric manufacturer） dye, in the process of dye synthesis, some strong electron-withdrawing groups are usually introduced in the ortho position of the azo group, thereby reducing the azo-based gas. The electron cloud density of an atom.

3. The dye should be selected according to the color depth. The darker the color, the better the light fastness to light. Color matching should be selected for dyes with good light stability and compatibility.

Therefore, the dye selection of the hydrophilic nonwoven fabric（hydrophilic nonwovens wholesale） is very important, and the dye is often used to dye the cloth, maintain its color fastness, and does not fade, and fundamentally solve the problem and achieve better results.