Introduction: Cellulose acetate tow is made from natural wood pulp, processed into cellulose acetate sheets through acetylation, and then processed through dissolving, filtering, spinning, crimping, and drying. It is a precision filter material used in cigarette filters, fountain pen refills, absorbent layers in diapers, and non-woven fabrics for face masks. Cellulose acetate tow is a regenerated cellulose fiber with a "Y"-shaped cross-section. The fiber has a large surface area, resulting in excellent filtration performance and good moisture absorption and adsorption properties.