Abstract: A thermoplastic polyolefin composition containing polypropylene or a copolymer thereof, an ethylene copolymer, and a peroxide. In one embodiment, one of the polypropylene or copolymer thereof or the ethylene copolymer is a continuous phase, while the other is a discontinuous dispersed phase therein. In another embodiment, one of the polypropylene and ethylene copolymer components has a relatively low melt flow index and the other component has a relatively high melt flow index. Optional components include a metal stearate, a primary amide, a heat and/or light stabilizer, and a coloring additive. Articles molded from these thermoplastic compositions are also provided.

Abstract: A method of making an interior trim panel for attachment to structure of a vehicle includes the steps of loading a trim blank into a cavity of a first side of a mold and depositing a molten thermoplastic material onto a core on the first side of the mold. The method also includes the steps of closing the mold, moving the slide in a channel of the core, and injecting a molten thermoplastic material into a second side of the mold to form the interior trim panel.