Winder cracks

1. For uneven hardness or non-uniform moisture content of roll, identify source and take corrective action.
2. Locate and remove any lumps on dryers, paper carrier rolls or spreader devices.
3. Check that spreader device is correctly set.
4. Too tight a wind.
— reduce friction.
5. Inspect each core before putting it on winder shaft to ensure that core and core tips are of uniform size.
6. Reduce trim blower pressure if edge cracks are result of excessive velocity of trim blowers.
7. Check slitters.
— reset if top slitters are set too deep.
8. Raise slitter board if set too low.
9. Replace or regrind damaged slitters.
See Bursting or cracked rolls.