Improved containers
Apparatus and method for a box made from an expandable material. Folds in the flat blanks form hinges. Tooling defining blank's shape provides thickness of the expanded material less than the thickness of the major part of the blank where the folds are to be made having defined edges generally in the direction of each fold the fold and subsequently applying pressure along the area where folds are to be permitted to reduce the thickness of the this blank without removing material therefrom thereby providing hinges to permit formation of the box.