An automatic machine for providing corrugated sheet-like elements includes elements for the continuous corrugation of a ribbon which moves in a longitudinal direction. The corrugation elements include an upper conveyor and a lower conveyor. The upper conveyor includes a plurality of upper abutment elements extended substantially transversely with respect to the longitudinal direction of motion of the ribbon. The lower conveyor includes a plurality of lower abutment elements extended substantially transversely with respect to the longitudinal direction of motion of the ribbon. The upper abutment elements are interleaved with the lower abutment elements in a work area. The upper abutment elements each include a bar adapted to make contact with the ribbon, while the lower abutment elements each include a vane, which has a substantially wedge-like transverse cross-section and is adapted to receive the ribbon in order to deform it.

An automatic machine for providing corrugated sheet-like elements having a component for the continuous corrugation of a ribbon in motion in a longitudinal direction. The corrugation component includes an upper conveyor and a lower conveyor. The upper conveyor includes a plurality of upper abutment elements that are extended substantially transversely to the longitudinal direction of motion of the ribbon. The lower conveyor includes a plurality of lower abutment elements that are extended substantially transversely to the longitudinal direction of motion of the ribbon. The upper abutment elements are intercalated between the lower abutment elements in a work area. The upper abutment elements each comprise include a flap, which has, in the end adapted to make contact with the ribbon, at least one portion that has a grip component.

An automatic machine for providing corrugated sheet-like elements includes elements for the continuous corrugation of a ribbon which moves in a longitudinal direction. The corrugation elements include an upper conveyor and a lower conveyor. The upper conveyor includes a plurality of upper abutment elements extended substantially transversely with respect to the longitudinal direction of motion of the ribbon. The lower conveyor includes a plurality of lower abutment elements extended substantially transversely with respect to the longitudinal direction of motion of the ribbon. The upper abutment elements are interleaved with the lower abutment elements in a work area. The upper abutment elements each include a bar adapted to make contact with the ribbon, while the lower abutment elements each include a vane, which has a substantially wedge-like transverse cross-section and is adapted to receive the ribbon in order to deform it.

An automatic machine for providing corrugated sheet-like elements having a component for the continuous corrugation of a ribbon in motion in a longitudinal direction. The corrugation component includes an upper conveyor and a lower conveyor. The upper conveyor includes a plurality of upper abutment elements that are extending substantially transversely to the longitudinal direction of motion of the ribbon. The lower conveyor includes a plurality of lower abutment elements that are extending substantially transversely to the longitudinal direction of motion of the ribbon. The upper abutment elements are intercalated between the lower abutment elemnts in a work area. The upper abutment elements each include a flap, which has, in the end adapted to make contact with the ribbon, at least one portion that has a grip component.

The aim of the invention is to shape a flat web material (12) into a constant three-dimensional structure with a plurality of folds along differently oriented folding lines and with elevations and depressions. This is achieved in that the flat web material is inserted between a lower holding die (20b) and an upper holding die (20a), which are largely flat, consist of a flat material, and have pre-shaped bending lines that lie over one another in a precise manner when lying against the flat web material. A lower (30b) and an upper molding die (30a) are then guided thereto and brought into position, said molding dies consisting of a flat material with specified folding lines which oppose one another in a precise manner. The molding dies (30a, 30b) have a shape corresponding to the three-dimensional structure to be produced, and the molding die folding lines oriented towards the holding dies or pointing towards the holding dies match the bending lines of the holding dies, wherein the folding lines can lie against the holding dies.