The Importance of Pretreatment
Textile pretreatment (including desizing, scouring, bleaching, and other processes) is the fundamental stage that determines the quality of subsequent dyeing, printing, and finishing. Incomplete pretreatment leads to quality issues such as insufficient fabric whiteness, poor capillary effect, and uneven dyeing. Textile-grade Sodium Silicate, with its excellent penetrating properties, dispersibility, chelating ability, and alkaline buffering capacity, has become an indispensable key auxiliary in the pretreatment process.
Applications in the Scouring Process
The purpose of scouring is to remove natural impurities such as pectin, wax, and proteins from cotton fibers, improving fabric hygroscopicity (capillary effect) and whiteness. The roles of textile-grade Sodium Silicate in scouring include:
Adsorbing impurities: Sodium Silicate effectively adsorbs decomposed pectin, wax, and other impurities in the scouring liquor, preventing re-deposition on fab…