a heat moldable composite panel is particularly useful as an automotive headliner and other as structural parts which must have heat and sound insulating properties as well as sound absorbing properties . the panel comprises a corrugated core which is advantageously dual arched core or corrugated metal foil , with opposite sides . one side is covered by a linerboard and is attached to the core through thermoplastic adhesive . the opposite side is covered by a thermoformable foam layer which is attached to the core by heat activatable adhesive . the entire structure is formable in a molding die at relatively low temperatures .