Preventive maintenance programs plus qualified operators go a long way toward extending the lives of slitters and rewinders.

By Chris Mc Loone

Overlap
Overlap, a potential hazard not only to blade life, can also jeopardize slit quality. It is estimated that for every 0.010 inch increase in overlap, the speed of the upper blade will decrease 1 percent. Also, the nip point will progress ahead of the anvil when the overlap is increased causing the paper to burst ahead, rather than being supported by the anvil prior to slitting.