Patent ID: 8557162

Claim:
A method of mechanically activating a substrate comprising the steps of: obtaining a substrate; providing the substrate to a mechanical activation system; winding the substrate over the surface of a central disk, such that at least a portion of the substrate folds about a side of the central disk; intermeshing the substrate between a first plurality of engagement elements disposed on the side of the central disk and a second plurality of engagement elements disposed on the side of an outer disk; and reducing slippage of the substrate with respect to the central disk and the outer disk in the cross-direction by providing a portion of the first plurality of engagement elements or a portion of the second plurality of engagement elements with discontinuous tips, wherein the discontinuous tips comprise discontinuities having a depth between 0.2 mm and 5 mm, wherein the discontinuous tips have a coefficient of friction between 0.8 and 1.0.