The present invention relates to a stack of a web material, such as a tissue web material, said stack having fold lines (fn) extending laterally across the web, the distance between two consecutive fold lines being equal to the stack width (sw), and perforation lines (pn) extending laterally across the web, to form sheets of web material having a length corresponding to the distance between consecutive perforation lines (pn), the majority of said sheets having sheet lengths being greater than the stack width (sw) and other than evenly divisible with the stack width (sw), wherein the perforation lines (pn) are positioned along the web material such that all perforation lines are located at least a distance M from any fold lines in the stack, such that all perforation lines are separate from any fold lines in the stack. The invention also relates to a method for producing said stack.