How should the breaking rate of the roll paper be calculated?

The paper breaking rate of web is the ratio of the number of breakage of 100 rolls of paper in the printing process divided by 100. It is mainly used for the evaluation of the quality of the roll paper. In particular, newsprint, paper breaking rate is one of the most important items to identify the quality of paper. The reason why the paper is so important is that the printing work is stopped for several minutes each time, and sometimes it will damage the plate and the rubber sheet at the same time, so that it can not be printed without the change of the plate. In this case, the production time will be affected. If the printing speed is reduced to prevent paper breaking, the efficiency of printing will be reduced. Therefore, no matter breaking paper or preventing paper breaking from printing, the printing efficiency is reduced.