This is a defect on the mill roll which is caused by a change in the web’s basis weight or the caliper. The result of this would be the presence of paper results that have been stretched. These stretched papers would usually lead to a complication in the production process. It is important to know that most of the mill rolls would be scrutinized for any areas that may appear to be baggy. This is usually done by hitting the areas with a baton or checking for any changes by listening to any noise.