Firstly, fabric evaluation mainly involves conducting necessary tests on the color, texture, and structure of clothing, including the depth of color, seam shape, color of sewing thread, metal accessories, and types of pulp. Preparation before washing: Before washing clothes, some parts of the clothing should be pinned and fixed, and can be covered with a mesh to avoid entanglement during the washing process, in order to achieve a uniform washing and wear effect. When washing pants, the waist of the pants should be tied with a rope, and the two legs of the pants should be fastened together with glue needles or other methods.
1. Flushing water
The purpose of flushing is to wet the linen and remove water-soluble dirt. Water is currently the most commonly used solvent in water washing, and dirt that can be dissolved in water does not need to be washed with other detergents.
2. Pre washing
The purpose of pre washing is to loosen and crush dirt, and to prepare for main washing. In this step, appropriate pre washing agents should be added. Commonly used detergents include wetting agents, bases or acids, and corresponding solvents.
3. Main washing
The purpose of main washing is to completely remove dirt.
4. Bleaching
The purpose of bleaching is to remove stains left after removing dirt and increase the aesthetic appeal of the linen. There are also some misunderstandings in this step. Some people believe that bleach can also have a cleaning effect and add it freely. Some add it as soon as the water level reaches but the temperature does not reach the set temperature. Some bleach the unfinished linen without analyzing the reason. Some believe that bleaching is an important aspect of the user's recognition of the linen.
5. Overflow
The purpose of watering is to clean all the detergent and dirt injected in the previous program. Some laundry rooms believe that the number of times can be reduced arbitrarily, and even think that there is less water, but using more neutralizing agents can neutralize the residual alkali.
6. Post processing
The purpose of post-processing is to physically and chemically treat the washed linen according to different uses to meet people's requirements for the use of linen. Neutralization is to make the pH of linen close to that of human skin, thereby increasing the comfort of daily use. Softness is designed to enhance the touch and aesthetics of the linen, as well as to have anti-static functions. Sizing is to enhance the width and aesthetic appeal of the linen.