Patent ID: 7204390

Claim:
A stack of material sheets comprising; material sheets having a longitudinal direction and a transverse direction; each of said material sheets being folded at least once in said transverse direction along a transverse folding line and at least once in said longitudinal direction along a longitudinal folding line; each of said material sheets comprising rectangular panels having a single material sheet thickness and having two delimiting edges formed from said at least one longitudinal fold line and said at least one transverse fold line; consecutive material sheets in said stack being folded into one another and interlinked by said panels; said panels arranged such that a single panel of a first material sheet is enclosed by two panels of a next second material sheet and a longitudinal fold edge of said first material sheet is arranged opposite a corresponding longitudinal fold edge of said next second material sheet; and said panels providing sufficient interlinking between consecutive material sheets such that when a first material sheet is extracted, a predetermined part of a next second material sheet is fed out.