Peguform France

Nicolas Hochet

Francis Vendangeot

The invention relates to a method of making a reinforced composite panel of the sandwich type having a cellular core. In the method: a stack is formed that is made up of: at least one first skin ( ) made of a reinforced thermoplastics material; a first reinforcing ply ( ) made of a reinforced thermoplastics material; a cellular core ( ) made of a thermoplastics material; a second reinforcing ply ( ) made of a reinforced thermoplastics material; and a second skin ( ) made of a reinforced thermoplastics material; each of the first and second reinforcing plies ( ) having a surface area that is smaller than the surface area of each of the first and second skins ( ), and said first and second reinforcing plies being positioned symmetrically about the plane formed by the cellular core at determined places against said skins; the stack is pre-assembled; the pre-assembled stack is heated in an oven; and said panel is formed by subjecting the heated stack to cold-pressing in a mold, under a pressure lying in the range 1&times;10 Pa to 3&times;10 Pa.

Method of making a reinforced composite panel of the cellular-core sandwich type, and a panel obtained by performing such a method

The molded composition stack part (44 ) for a vehicle includes a stack including a cellular core sandwiched between a first face (46) and a second face (48). The part also has a curved surface zone (50) contiguous with the first face (48) and with a rim (54) of the part, and has a trough (52) extending in the second face (48) in the vicinity of the rim towards the first face. The part is characterized in that the rim (54) has a plane external side face (57) that is perpendicular to the first face (46), and that extends in alignment with the curved surface zone (50).

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La Chapelle-sur-Oudon, France

Nicolas Hochet