MATERIALS | ENGINEERING THERMOPLASTICS
Right: Lanxess materials contribute to the bolster on the Ford Kuga which houses an actively controllable unit consisting of four active grille shutters that ensure a demand- oriented supply of air to the engine cooling system. The bolster is reinforced at the sides with metal inserts
its traditional pliers, made from formed and painted sheet metal, with moulded ones made of LatiGloss, which Lati says are just as reliable and durable. “Furthermore, the geometry of the plastic arms simplifies cleaning and disinfection operations, which are quite safe thanks to the excellent chemical resistance of the compound,” it says. “The pliers, manufactured by Alpha Industrie Plastique, are perfectly serviceable thanks to the considerable dimensional stability and mechanical strength of the reinforced LatiGloss compound, a material boasting a high modulus of elasticity and a breaking strength greater than 2,000 kg/cm2 Also highlighting metal substitution possibilities
.” Below:
Dialmax clock calliper from Svismold
of ETPs is Akro-Plastic. Svismold, based in Buchs, Switzerland, is a producer of precision measuring equipment. It cooperated with Akro-Plastic to develop a new compound for its Dialmax clock calliper, which completely eliminates the use of hardened tool steel. Both the measuring unit and the measuring rod with length specification are made from Akroloy PA GF 60 black (6418). “The use of plastic results in a weight reduction and an excellent surface quality for the hot stamping of lettering, advertisements, etc,” says the compounder. Thermoplastics with easy-flowing properties
are usually rather more expensive than compara- ble standard materials; however, they offer
advantages that ultimately pay off in terms of processing, production costs and freedom of design. This can be seen in the highly integrat- ed bolster produced in plastic-met- al composite technology (hybrid technology) for the Ford Kuga SUV. In addition to steel panels, the production of the highly-loaded structural component includes an easy-flowing, fiberglass- reinforced PA6, Durethan BKV30H2.0EF from Lanxess. The bolster and the fully assem-
bled front-end module were developed and are produced by Montaplast. Says Ulrich Dajek, hybrid design expert at
Lanxess: “Our easy-flowing PA6 can be processed at lower injection pressures. For this reason, smaller injection moulding machines with lower clamping forces can be used in the production of the hybrid bolster.” PA6 has two main advantages over the possible
alternative material, polypropylene, says Lanxess. The component contains several direct threaded connections; these are more cost-efficient than using additional metal inserts. “The threaded connections designed using PA6 are significantly more stable, have a longer service life and are more reliable than with PP,” Dajek says. Plus, PA withstands the thermal loads that arise when the grille shutters are closed. “It was possible to reduce the wall thickness by
around 20% in the areas subject to lower loads. Compared to a standard PA6 with the same fiberglass content, this results in an appreciable weight saving,” says Dajek. Lower filling pressure used also means lower moulded-in stress, and so lower distortion.
CLICK ON THE LINKS FOR MORE INFORMATION: �
www.lanxess.com �
www.avient.com �
www.teknorapex.com �
www.ascendmaterials.com �
www.tisan.com.tr �
www.dsm.com �
www.basf.com �
www.rtpcompany.com �
www.eurotec-ep.com �
www.sabic.com �
https://polyscope.eu �
https://wittenburggroup.com �
www.lati.com �
https://akro-plastic.com
44 INJECTION WORLD | November/December 2020
www.injectionworld.com
IMAGE: LANXESS
IMAGE: AKRO-PLASTIC
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