Cotton-gassed mercerized yarn implies a kind of cotton yarn that has followed up on special processing techniques to boost its special features.
Gassing is a special procedure in which the yarn passes through a flame or hot metal plates to create any protruding fibres or fuzz on the face. It forms a smoother and more lustrous look. Mercerization is a special chemical treatment used on cotton yarn or fabric. It includes adding the cotton to a solution of caustic soda and then washing it.