Panel of material such as, for example, a vehicle door panel having reinforcements and a handle

Abstract

A process for manufacturing a panel of material, intended, in particular, for forming an element of internal trim for a vehicle body, such as, for example, a door panel, including at least one layer (1), in particular of thermoplastic material, constituting a core, provided with an internal face (2) and an external face (3), therefor: The core layer (1) is moulded between two dies (8, 9), with additional thicknesses (10) being provided locally, these being suitable for constituting reinforcing ribs (4) formed from the mass of the panel. Gas is injected axially under pressure into the said additional thicknesses (10) in order to push the material of the said core layer (1) in such a way as to form tubular box girders 5. The material pushed at the time of injecting the gas is diverted. From the mass of the panel, at least one protuberance (7) is formed with the laterally diverted material.

Dependencies are inferred from the claim text.