The principle and function of clothing washing and dyeing

The washing method of using water as a medium to clean fabrics is called water washing. Due to the different types and structures of clothing, washing can cause some washing quality issues. Natural fibers, due to their tendency to expand after absorbing water and shrink after drying, can cause clothing to shrink or deform; Wool products can experience surface scale adhesion and shrinkage when exposed to water; In addition, washing with water can cause pilling and shrinkage of woolen fabrics, color fading of certain fabrics, and even a decrease in the feel, color, and luster of wool and silk. Dry cleaning is the process of washing fabrics with a certain amount of volatile organic solvents to remove dirt. Dry cleaning solvents do not have the same swelling effect on natural woolen fabrics or fiber shrinkage phenomenon as water washing when cleaning clothes. Dry cleaning is a relatively "gentle" washing method for fabrics. As long as the technology is handled properly, it has excellent special effects of basically no deformation, no fading, and prolonging the service life after washing.
The washing process is an extremely complex physicochemical reaction, and a series of reactions mainly play the following roles:
Firstly, thoroughly destroy the adhesion between dirt and fibers, resulting in a considerable degree of firmness turning into looseness and weakness.
Secondly, it forces dirt to leave the fibers, which means that dirt loses the conditions for its existence on the fibers and cannot continue to exist on them.
Thirdly, the dirt that has left the fiber loses its ability to re bind with the fiber and can no longer adhere to it.