Nicked edges

1. Check for nicked slitters.
2. Check for improper setting of two shear-cut slitter knives.
3. Check for lack of pressure in score-cut slitting.
4. Eliminate any flutter in a soft edge.
5. Prevent rolls running together where nicks or tears are generated during roll separation.
6. Slitters should be properly adjusted and replaced if they are nicked.
7. Nicks caused by flutter can be reduced or eliminated by:
— increasing web tension.
— changing alignment of the backstand.
— adjusting the spreader bar.
— by supporting the web edges with bottom slitters.