Sand washing uses some alkaline and oxidizing auxiliaries to make the clothes have a certain fading effect and old feeling after washing. If it is equipped with stone grinding, the surface of the cloth will have a soft frosty white fluff, and then add some softener. It can make the washed fabric soft and soft, thus extending the life of the clothes.
Sand washing agent
a) Extruding agent: According to the type of fiber, the structure and tightness of the fabric, the expansion agent and concentration, the expansion conditions such as temperature and time are selected. When the cotton clothing is sanded, it can be expanded by using an alkaline expanding agent such as soda ash. .
b) Sand washing agent: After the clothes are puffed, the fibers are loose, and then the special sand washing is used to rub, so that the loose surface fibers produce full and soft hair. To make the suede full, it is necessary to use different shapes and different hardnesses. Sand powder, such as diamond sand (to make loose fibers to produce fluff), polygonal sand (to make the velvet stand), round sand (to make the fluff full).
c) Softener: Softener for sand washing. It is required to achieve a soft banding property, so that the fabric can be weight-increased and the drape property is significantly improved. Therefore, the softener has a long carbon chain and is cationic, and can be adsorbed on the fabric to achieve weight gain.