• If the draft gets varied during carding process due to mechanical or any other reasons, the high variation in sliver's linear density (weight per unit length) is resulted.
• If the feed roller bearing gets worn out, the constant feeding rate of cotton mat is affected, so that draft variation results. Thus variation in weight per unit length of sliver results.
• The auto leveller always helps to keep the linear density of a sliver during carding process. When auto leveller gets failed due to any reason, the linear density carries.
• if the doffer does Insufficient stripping of fibres, it results in the form of neps generation during the carding process.
Yarn count testing, yarn tensile strength testing, and CSP calculation
Yarn count testing from fabric swatch
Rotor spinning ( an open end spinning process)
Air - jet /vortex spinning ( an open end spinning process)