Blow room is the first step of yarn production in spinning mills. A section in which compressed bales are opened, cleaned and blending or mixing to form uniforms lap of specific length is called Blow room section. The cleaning efficiency of blow room is 40 to 70%.
In the carding process, the material gets passed through a carding machine. The fibres are made parallel to each other. The fibers tangle in this operation, thus it makes it possible to remove all types of impurities present in the cotton.
Drawing process stage To improve the fibre arrangement in the sliver and to make the fibres parallel to the sliver length. To straighten the hooked, curled and crimped fibres present in the sliver.
Rotor spinning is more cost-effective than ring spinning in the manufacture of yarns with coarse to medium counts. Rotor spinning combines two process stages spinning & winding in a single machine.