The mother roll unwinds through razor, shear or score knives, and each strip is rewound on its own core at the width the converter ordered. Clean edges, accurate width, even tension and a well-built roll are the quality targets. Dull knives or poor setup leave fuzzy edges, dust and dished or telescoped rolls.
Slitting set is 12 lanes at 180 millimeters, and lane 7 keeps coming out fuzzy, change that knife.
Change knives on a schedule, not when edges look bad; dull knives shed dust onto every roll long before an edge looks fuzzy.
Also heard as
- slit
- slitter-rewinding
Related terms
Mother roll
Full-width roll wound at the end of the production line, before it is slit into customer rolls.
Telescoping
Roll defect in which wound layers slide sideways so the roll end pokes out like an extended telescope.
Core
Tube, usually paperboard, on which nonwoven fabric is wound to make a roll.
Butt roll
Leftover partial roll from the end of a mother roll or slitting set that is too short for a full order.