Method and apparatus for manufacturing a crimped sheet of material

A method for crimping a sheet of material, wherein the method includes:

• feeding a substantially continuous sheet of material to a set of crimping rollers, the set of rollers comprising a first roller and a second roller defining a first and a second rotational axis, respectively, at least one of the first or second roller including a plurality of corrugations;
• selecting a crimping angle formed between a fixed reference plane and a movable plane containing the first and the second rotational axis;
• and
• crimping the substantially continuous sheet to form the crimped sheet by feeding the substantially continuous sheet between the first and second rollers in a longitudinal direction of the substantially continuous sheet such that the corrugations of the first or second rollers apply a plurality of crimp corrugations to the substantially continuous sheet of material.