Patent ID: 6221299
Filing Date: 2001-04-24
Classification: A61B,B21D,B29C

Abstract:
A process for stiffening profiling of thin materials and foils in which a curved material or foil is supported by rigid quadrangular or hexagonal supporting elements arranged on a mechanical forming tool and pressurized against said supporting elements, wherein said curved material or foil is pressurized on the side opposite said supporting elements, by an elastic flexible element so that said material or foil is pressurized in its curvature wherein dent folds which correspond to the shape of said supporting elements evolve by themselves in said material or foil by said dent folds springing and evolving into their final shape in said material or foil by partly or completely bending dent troughs without said dent troughs associated with said dent folds being touched by said mechanical forming tool, thereby producing a stiffened thin material or foil.