US Patent 7886639 Roll cutting apparatus

A method for cutting an industrial-size roll of paper or other sheet material into two or more rolls is disclosed. The method enables sections to be cut from the roll, without first having to remove a previously cut section from the roll. The roll is supported on two parallel rollers. A circular saw is mounted in a saw frame that travels along a carriage and positions the saw blade at any desired cutting position on the roll. The saw blade has a radius large enough to cut through such a roll in a single cut, leaving press-ready rolls that require no finish-trimming on the ends.