Deweighting, deweighing or weight reduction, is a chemical treatment that peels the surface of polyester fibers and makes them softer and finer.
Finally, an anionic surfactant is applied to prevent further deweighting and to aid in the dispersion of the peeled fibers.
The hydraulic action peels the surface, resulting in a weakening of the fiber and an increase in its softness and fineness.
[1] Alkali deweighting of polyester fiber with imidazole ionic liquid is helpful in accelerating the deweighing action.
[5] Alkali deweighting of bicomponent containing polytrimethylene terephthalate/polyamide 6 separates the PTT and nylon components of the yarns, resulting in superfine filaments with a change in fiber diameter and shape.