Toyota says compounding technologies, including ones that promote molecular-level bonding and homogeneous mixing of plant-derived and petroleum-derived raw materials, result in materials that satisfy heat- and shock-resistance demands of vehicle interiors. Toyota originally applied Ecological Plastic in 2003 for the Raum vehicle marketed in Japan, which used polylactic acid (PLA) and other all-plant-based materials. Over a product’s entire cradle-to-grave lifecycle, Toyota says the materials are a net zero emitter of carbon dioxide.
Specifically, for the cuff plates, cowl side trim, floor finish plate, and toolbox, Toyota says it will use a compound of PLA and polyproplyene (PP). In the headliner, sun visors, and pillar covers, plant-derived polyester and petroleum-based polyethylene terephthalate (PET) will be used. In the trunk liner, PLA and PET will be applied, while door trim will be 100% plant-derived, using kenaf fiber and PLA. The seat cushion will use polyurethane foam featuring castor oil-derived polyol.—[email protected]