Methods, systems and products involving sheet products

1. A tubular roll of sheet product prepared by a process comprising the method of:

providing a sheet product roll having a first configuration, a void and a moist portion surrounding the void;

centering a rotational axis of the sheet product roll on a longitudinal axis of a first tool;

inserting the first tool comprising a plurality of heated regions into a void of the sheet product roll to define an inner diameter of the void and to form the sheet product roll having a second configuration different from the first configuration,

inserting a second tool comprising a plurality of heated regions along the rotational axis of the sheet product roll in a direction opposing the first tool,

forming a first indentation portion on the sheet product roll concentric to the rotational axis of the sheet product roll using a flared portion of the first tool,

forming a second indentation portion on the sheet product roll concentric to the rotational axis of the sheet product roll on a side of the sheet product roll opposing the first indentation portion,

rotating the first tool inside of the void while heating the plurality of heated regions, wherein the heating of the plurality of heated regions and the rotation of the first tool cause a removal of at least a portion of a moisture from the moist portion, and

rotating the second tool inside of the void while heating the plurality of heated regions, wherein the heating of the plurality of heated regions and the rotation of the second tool cause a removal of at least a portion of a moisture from the moist portion such that non-uniform hardening occurs across the void to produce a plurality of hardened regions of the sheet product roll.

2. The tubular roll of sheet product of claim 1 , wherein the first tool is a mandrel.

3. The tubular roll of sheet product of claim 1 , wherein the method further comprises moistening portions of the sheet product roll defining the void prior to inserting the first tool.

4. The tubular roll of sheet product of claim 1 , wherein the method further comprises aligning the rotational axis of the sheet product roll over a reference point with a centering device having a plurality of dogs operative to secure the sheet product roll.

5. The tubular roll of sheet product of claim 1 , wherein the method further comprises emitting a liquid from a port in the first tool responsive to inserting the first tool into the void of the sheet product roll.

6. The tubular roll of sheet product of claim 5 , wherein the liquid includes an adhesive.

7. The tubular roll of sheet product of claim 5 , wherein the liquid includes polyethylene glycol.