Dry cleaning refers to washing clothes with organic chemical solvents, including removing oil stains or stains.

2. How is dry cleaning done?

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 is post-processing.

The main purpose is to remove the residual dry cleaning solvent from clothes and irons and shape them.

How to tell whether clothes are dry-cleaned or wet-washed?

First, it's simple. You just need to put a tissue in your clothes.

1, write on a paper towel, then drop a drop of oil as a special mark to ensure uniqueness, then nail it in a hidden place such as the lining of clothes and send it to different dry cleaners.

2. When taking clothes, if the paper towels are intact and the oil stains disappear, it is authentic dry cleaning;

If the paper towel is wrinkled, has burrs, or becomes fragments, it can be concluded that the clothes must have been watered.

The principle of this detection method is that the dry cleaning agent includes tetrachloroethylene and petroleum dry cleaning agent, both of which are organic solvents, which will not dissolve paper towels, but can dissolve grease.

But when the paper towel touches water, it will definitely wrinkle and even break.

In addition, the general dry cleaning machine in regular dry cleaners will not be placed directly against the wall, because the machine needs maintenance, and there must be problems with people who can't get in for maintenance. This method can also be used to judge whether the dry cleaners are formal or not.

Second, the detection method of the upgraded version:

Nowadays, in order to avoid customers' temptation, many dry cleaners used to rummage through their pockets, and the tissues were easy to take away. You can also put a small piece of plastic foam in your clothes and take it to the laundry.

If the clothes smell of dry cleaning agent, the plastic foam is still there after it is taken back, which means that it has been dry-cleaned by petroleum dry cleaning agent;

The plastic foam disappeared and was dry-cleaned by tetrachloroethylene dry cleaner.

There is no smell of dry cleaning agent, and the plastic foam is still there, which means it was washed with water.