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INNOVATION | AUTOMOTIVE SURFACES


Polyamides specialist EMS-Grivory says that, together with Lear Corporation, it has developed sports seats for the new Opel Insignia GSi. The back support and seat shell are made of Grivory GVL HP, a semi-crystalline, partially aromatic polyamide with a special long glass fibre reinforcement. The material supplier says that during the injection moulding process, the fibres form a fibre skeleton which significantly increases the performance capability of the components. “This gives the seat shell and back support enormously higher notched impact strength and in the case of an impact, can ensure much higher energy absorption,” it says. In July, the seats were awarded the Grand Innovative Award for exceptional innovation in all categories at the Society of Plastics Engineers (SPE) Central Europe Award Night


Below: Award-winning composite guide rails on a sunroof module are made with Polyscope’s Xiran SGH30EB


ences may not seem that great, but in long light pipes, it can be critical. Elix Polymers says its polycarbonate-modified ABS (ABS/PC, rather than PC/ABS) has been approved by various OEMs for interior and exterior parts. Volkswagen for example uses it for exterior pillars on its Sportsvan, in two-component mouldings that are capped with PMMA. Audi appreciates its low emissions and odour, and considers the material as very interesting for lower instrument panel parts, centre console parts and door panel parts. BMW has also just started using one grade, Elix ABS H801, for painted spoiler and aeroblade parts for its latest X5, X7, and X6M cars. Parts and moulds were developed in China by Jiangnan Mold Plastic Technology Corp., a major automotive component supplier with eight plants in China, and then shipped to the Minghua USA plant it recently established close to BMW’s Spartanburg plant in the USA. Elix Polymers says both the tensile modulus (2,400 MPa) and flexural modulus (2,300 MPa) of the grade are higher than many PC/ABS grades with a greater PC content. Its impact resistance, with a Charpy notched impact strength at 23°C of 30 kJ/m2


, is also one of the highest for an ABS-


based material. Very good thermal resistance is evidenced by a Vicat B50 of 105°C.


At this year’s Automotive Composites Confer- ence & Exhibition (ACCE) sponsored by the Society of Plastics Engineers, a team comprised of Renault, Tier One Webasto, toolmaker and moulder Aark-Shapers, and polymer supplier Polyscope Polymers won the event’s People’s Choice award for the most innovative composite part: the first composite guide rails on a rollerblind sunroof module for the panoramic roof on two Renault Scenic MPVs. The rails are made in Polyscope’s Xiran SGH30EB, a glass-reinforced copolymer of styrene maleic anhydride (SMA) and ABS, optimised to ensure high bond strength to the polyurethane adhesive used to mount the glass to the module and the module to the body-in-white (BIW) roof structure, and to ensure high dimensional stability critical for smooth operation of the rollerblind. Polyscope says the move from aluminium


extrusions to thermoplastic composite lowered part weight and operating noise, simplified sunroof construction and installation on the vehicle assembly line, reduced costs, and increased headspace in the passenger compartment. Clever tooling by AARK-Shapers enabled eight module components to be moulded in a family tool.


CLICK ON THE LINKS FOR MORE INFORMATION: � www.engelglobal.com � www.leonhard-kurz.com � www.kraussmaffei.com � www.sumitomo-shi-demag.euwww.ineos-styrolution.com � www.aschulman.com � www.covestro.com � www.proell-inks.com � www.evonik.com � www.elix-polymers.com � www.polyscope.euwww.emsgrivory.com � www.hennecke.com


22 INJECTION WORLD | November/December 2018 www.injectionworld.com


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