Multi-layer vehicle airbag coverings

摘要

A panel (10) for use over a vehicle airbag includes a multi-layer covering disposed over a substrate (14) outer surface. The covering includes a decorative skin layer (32) and a foam layer (46,48) between the substrate and the skin layer. The covering also includes a tear seam (40) provided at a pre-determined location for an airbag deployment opening. The foam layer has one or more material properties that vary between the substrate and the skin layer. The density of an outside layer of the foam layer may be greater than the density of an inside layer of the foam layer to improve tear seam function. The covering layers may be bonded to each other without the use of additional adhesive material. The tear seam may be formed by laser scoring and may have at least a portion that extends into the foam layer and may further extend into the skin layer.