AZDEL VolcaLite VLSTDA.0901BT is a thermoformable, thermoplastic composite sheet comprised of a low- density polypropylene and chopped basalt-fiber core, combined with a PET scrim with barrier film attached to one surface and a perforated adhesive film to the other surface. This material is typically used as a substrate in seml- structural applications where a very high strength-to-weight ratio is required, such as in automotive headliners, door panels, rear parcel shelves, sunshades and other interior trim.