Patent ID: 7758487

Claim:
A method for continuously folding sheet material into a desired pattern comprising the steps of: successively folding said sheet material, beginning at the central longitudinal axis thereof, into an increasing number of longitudinal folds following the mathematical series 1, 3, 5, 7 . . . , respectively, to insure the correct positioning of said sheet material throughout the folding operation; applying a folding pattern into said successively folded sheet material, for finally folding said sheet material to have a predetermined pattern, said final folding pattern having folds at an angle to said longitudinal folds and successively juxtaposed elements equal in number to the number of longitudinal folds in said sheet material as a result of said successively folding step; configuring the folding pattern to produce a double-sided inclined folded core structure having folds in the form of opposing helices at an angle to one another in said sheet material; and splitting said double-sided inclined folded core structure sheet material into two independent singular inclined direction folded core sheet material, respectively.