VEHICLE INTERIOR PANEL AND METHOD OF MANUFACTURING SAME

A vehicle interior panel such as an instrument panel includes a substrate having a thickness between 0.5 mm and 2.25 mm, inclusive, a decorative layer, and an intermediate layer located between the substrate and the decorative layer. A post-form warpage of the substrate is less than 15 mm at an edge region of the substrate. A serpentine rib located near the edge region helps impart structural rigidity to the panel during a foaming process to achieve an adequate degree of post-form warpage.