Staining base: initial dyeing, level dyeing and dyeing

Level dyeing: The extent to which the dye is uniformly distributed on the surface of the dyed material and inside the fiber.

Whether the parts of the dyed surface are evenly distributed and whether the dyes are evenly distributed within the fiber. Examples of the four cases of distribution inside the fiber.

Transfection: dyes that have been dyed at more sites are transferred to sites with less dyeing by desorption.

Interface shift, whole process shift

The so-called interface shift dyeing means that the dye is adsorbed from the solution to the surface of the fiber, and it is desorbed into the dyeing solution when it has not diffused into the inside of the fiber, and is then re-adsorbed by the dyeing solution to a site with less dyeing.

The so-called whole-process shift dyeing refers to the dye that has diffused inside the fiber, and then spreads to the fiber surface through diffusion from the inside to the outside, and then desorbs into the dyeing solution, and then the dye solution is re-adsorbed to a site with less dyeing.

In the initial stage of dyeing, the interface shift is mainly caused by the migration, and in the later stage of the dyeing, the whole process of shifting occurs.