The main tasks of blow room process are opening, cleaning and blending of cotton fiber tufts without over stressing of fibers. One important function of the blow room is to disintegrate the fiber bales into a flow of very small clumps of fiber, which are sufficiently small in size to be digested by the cards. The intensity of fiber treatment is different, because the tufts continually become smaller as they pass from stage to stage. Cotton bale have non-lint content apart from cotton that have to be removed in the initial stages of spinning process itself. About 40% to 70% trash is removed in blow room section. Blender equipped in the blow room sequence reduces the lot to lot variability existing in the raw material by homogenous blending.
