A TPV used for three years in bumper extensions on selected Renault and Volkswagen models is now expected to be in wider demand by the auto industry.

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A TPV used for three years in bumper extensions on selected Renault and Volkswagen models is now expected to be in wider demand by the auto industry. Sarlink K-156 compound from Teknor Apex, Thermoplastic Elastomer Div., Pawtucket, R.I., and Geleen, The Netherlands, is used for bumper extensions, or “spoiler lips,” which are growing in popularity to improve fuel economy by lowering wind drag and noise. They also protect the bumper from side damage. The 95 Shore A material has demonstrated high resistance to water spray, road salt, UV light, and temperatures down to -40 C/F. It also is said to offer good flow for filling bumper extensions up to 6 ft long and including thin-wall sections. Sarlink K-156 reportedly provides a high-quality surface finish and bonds with PP in overmolding. Teknor also has developed a softer high-flow version for certain models at Citroen, Peugeot, and Toyota.