WEB EXCLUSIVE: Celanese Corp. (formerly Ticona Engineering Polymers), Florence, Ky., has developed a grade of Fortron PPS that is said to be the first for use with 3D robotic-manipulated blow molding of tubular automotive components with complex geometries. This PPS grade can be shaped into a duct with multiple 90° bends and intricate contours. Compared with standard blow moldable PPS, this grade offers higher melt strength, improved impact resistance, higher blow-up ratio, and longer handling time. Processors can use all available blow molding technologies to produce high-temperature air-inlet systems and exhaust-gas recirculation pipes while reducing the number of manufacturing steps. Celanese has been working with Rochling Automotive, Duncan, S.C., on a new PPS air-duct geometry that can weigh up to 30% less than aluminum counterparts.