The first step is pretreatment, which is to remove stains. It uses artificial additives to pretreat seriously polluted dirt and stains insoluble in dry cleaning solvents (such as juice, nail polish, paint, ink, etc.). ). In the absence of water, apply laundry detergent first, and then wash it with water.

The second step is the main washing. Put the pretreated clothes into a dry cleaning machine, wash them thoroughly with dry cleaning solvent, and spin them dry.

The third step, post-treatment, the main purpose is to remove the residual dry cleaning solvent in clothes and irons and shape them.

Extended data:

Dry cleaning has both advantages and disadvantages:

1, and has the advantages that:

With the development of chemical industry and clothing industry, clothing fabrics are constantly updated, and many of them need dry cleaning. Dry cleaning generally does not deform clothes, and it is very convenient and popular, but it also has health hazards.

2. Disadvantages are:

Generally speaking, dry cleaners use high chloride chemicals as active solvents when dry cleaning clothes. This high chloride is harmful to human economic system. Long-term exposure to this chemical is likely to lead to kidney cancer. In the process of dry cleaning clothes, this chemical will be absorbed by the fibers of clothes, and then released into the air from clothes when clothes are dry, thus affecting human health.

References:

Baidu encyclopedia-dry-cleaning