Patent ID: 8389092

Claim:
A stack formed from an intermediate web, said stack having a first face side and a second face side, said first and second face sides facing in opposite directions, said first face side comprising a first plurality of edge portions formed by a first set of folds in said intermediate web and said second side face comprising a second plurality of edge portions formed by a second set of folds in said intermediate web, said edge portions having a thickness (t), said intermediate web comprising at least a first web-shaped material having a web extension direction, said first web-shaped material being provided with a first visible pattern having a repeat length (r) in said web extension direction of said first web-shaped material, wherein adjacent folds of said first set of folds are separated by a distance L in the web extension direction along said first web-shaped material and adjacent folds of said second set of folds are separated by said distance L in the web extension direction along said first web-shaped material such that the distance L satisfies the equation: L=n·r+k·t where n is a positive integer, r is said repeat length, t is said edge portion thickness and k is a constant, with k being selected such that an edge pattern is formed on at least one of said first and second face sides of the stack, which edge pattern approximates said first visible pattern on the first web-shaped material.