Paper blank foldable to form three dimensional article has cut and punched tongues formed on sheet to retain second edge of sheet and hold it curved

摘要

The paper blank has fold lines and cut out portions to allow it to be erected into a three dimensional shape. The blank can be folded with one edge retained by cut out tongues adjacent to the other edge to hold the folded section in a curved condition to form the three dimensional shape. Alternatively, a separate panel can be held in a curved condition by punched out tongues adjacent the edges of the blank.