Rieter Technologies Ag

Autoneum Management Ag

Bertrand Buska

David Simon

Virginie Auger

A method for manufacturing a lightweight structural trim part is comprising the following steps: (A) inserting a plurality of layers into a molding tool comprising a first molding half () and a second molding half (). The second molding half () comprises a plurality of cup-like indentation (). The plurality of layers at least comprises a first air permeable skin layer () facing the first molding half (), a second air tight skin layer () facing the second molding half (), and a film layer () between the two skin layers. (B) Closing the molding tool and discharging gas from one side in order to press the first skin layer against the first molding half. (C) Shaping and consolidating the first porous skin layer. (D) Charging with pressurized air the first space in order to press the second skin layer against the second molding half. (E) Shaping and consolidating the second skin layer. (F) Meanwhile bonding the first and second skin layer to each other in the area between the cup-like indentations, in order to form an acoustic body comprising a plurality of cup-like cavities.

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Bezu-Saint-Eloi, France

Bertrand Buska