Cotton fabric: Commonly used desizing methods mainly include enzyme desizing, alkali desizing, oxidizing agent desizing and acid desizing.
Viscose fabric: Desizing is the focus of pretreatment of viscose fabric. Viscose fabric is generally starch slurry. Therefore, BF7658 amylase is used for desizing, and the desizing process is the same as cotton fabric.
Tencel: Tencel itself has no impurities. During the weaving process, a slurry mainly composed of starch or modified starch is applied, which can be desalted by enzyme or alkaline oxygen one-bath method.
Soy protein fiber fabric: desizing with amylase
Polyester fabric (de-slurry): Polyester itself does not contain impurities, but only a small amount (about 3% or less) of oligomers are present during the synthesis, so unlike cotton fibers, strong pretreatment is required. Generally, desizing and refining are carried out in one bath, and the purpose is to remove the oil added during the weaving of the fiber, the slurry added during weaving, the coloring dye, and the travel and dust stained during transportation and storage.
Polyester-cotton blended and interwoven fabrics: Polystyrene fabrics are mostly sizing with PVA, starch and CMC. The desizing method generally uses hot alkali desizing or oxidizing agent desizing.
Spandex-containing elastic woven fabric: Pretreatment should take into account the physical and chemical properties of spandex, minimize the damage to spandex, and maintain the relative stability of the stretch fabric. The desizing method generally employs enzyme desizing (flat relaxation treatment).