As we all know, the original hair contains a lot of sediment, grass, minerals, sand, urinary alkali and other impurities and lanolin. Therefore, in the processing of wool, the second process is wool washing. The purpose of washing, first remove the impurities such as sediment, the second is to remove lanolin, wool whiteness is the third whitening. Therefore, the choice of detergent is particularly important. Washing is not clean will affect hair, spinning, weaving and dyeing and other processing. By washing wool to remove these impurities, to obtain loose white wool fibers, in order to carry out textile. Wool cleaning agent can be divided into neutral acid scouring agent, alkaline scouring agent and acid scouring agent.

Classification of Wool Cleaning Agents
1. Neutral scouring agent
Neutral scouring agents also include anionic surfactants and non-ionic surfactants.
Among the anionic surfactants, the scouring effect of sodium alkyl sulfonate or p-methoxy fatty amine sodium benzenesulfonate is the best. In order to improve the washing effect, can also add sodium oxide, sodium sulfate and more sodium metaphosphate and other synergist.
Neutral lotions of nonionic surfactants have good detergency, and these scouring agents are not absorbed by wool, and the amount of detergent used is small. Nonionic surfactants such as nonylphenol ethoxylates are currently used most frequently. In this case,

2. Alkaline scouring agent
Wool in the PH value of 8.5 to 9.5 in the washing lotion for washing, its spinnability, antistatic and water absorption are more favorable. Alkaline scouring agents commonly used alkyl benzene sulfonate, net lotion R5, such as anionic surfactants, such as soda ash. Because the wool is alkali sensitive, so when scouring to pH, lotion temperature and the baking temperature carefully arranged and mastered to prevent damage to the fiber. According to the use of different pharmaceuticals are divided into soap scouring, light alkali scouring, ammonium scouring three kinds.

3. Acid scouring agent
Acid scouring method can remove the alkaline effects of alkaline impurities, the protection of the original fiber wool elasticity and strength, reduce the extent of milling. The addition of surfactants in the acid solution allows the lotion to quickly diffuse into the interior of the fiber to enhance the effect of wetting and emulsifying. The fiber can be expanded to improve the uniformity of the flake opening angle, . Nonionic surfactants such as lauryl alcohol polyoxyethylene ether, anionic surfactants such as sodium alkyl sulfonate, sodium alkyl benzene sulfonate and the like can be used as the acid scouring agent.