Teijin envisions composites, plastics use in concept EV

The 437-kg PU-PA electric vehicle features a core structure made of carbon fiber composites.

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The Teijin Group (Tokyo, Japan) unveiled on March 30 a super-lightweight electric concept car made with proprietary materials and technologies including carbon fiber composites, polycarbonate resins and bio-derived polyester. Weighing only 437 kg/963 lb, less than half that of conventional electric vehicles, the PU_PA EV (as in "pupa electric vehicle," a reference to metamorphosis) reportedly embodies Teijin's vision of what a vehicle will look like on the market in five to 10 years.

Capable of 60 kph/37 mph and a cruising range of 100 km/62 miles, the PU_PA EV offers the functionality and structural integrity of a practical automobile. As a symbolic electric concept car, it uses many proprietary advanced technologies:

Features include:
• Body incorporates a core structure made of carbon fiber composites
• Windows are made of polycarbonate resin with a heat-absorbing function weighing half as much as glass
• Modularized parts made with single-piece molding, etc., reducing total parts to about 20.
• Interior items (seats, floor mats, etc.) made with bio-derived polyester
• Metal-toned Teflex PET film, used as an alternative to chrome plating
• Low-noise tire cord made with Teonex polyethylene naphthalate (PEN) fiber
• Multi-device communication using Cell Form two-dimensional communication sheet

Going forward, Teijin will use its innovative concept car as a marketing tool to showcase the group's environmentally responsive technologies and customer-oriented solutions.