Polykemi, a Swedish compound supplier company has developed a 40% glass-fiber-reinforced polypropylene (PP) compound for the inside frame of the sun visor used in a recently introduced Mercedes Benz model series.
While being substantially lighter than the previously utilized engineering plastics compound, the technical properties of the Polykemi POLYfill PPH GF5040HC grade used in the Mercedes C-class vehicle resemble those of glass-fiber-filled polybutylene terephthalate (PBT) and polyamide (PA) 6.
With initial deployment in the Mercedes C-class, there is also potential for the POLYfill HC grade to be used in further models and in many applications according to Richard Vanselow, Managing Director of Polykemi’s German subsidiary.
The sun visor frame is designed in such a way that the supporting structure can be made from a single material rather than the traditional combinations of metal and plastic.
“With a ‘mono-material solution’ you don´t have to use complex methods of manufacturing and thus costs are saved. Thanks to our material, the part weight also has been decreased,” comments Henrik Eriksson R&D Manager at Polykemi.
Polykemi has an official approval by Mercedes Benz and is listed on the APS-list for approved materials – ‘Qualified interior raw materials from localized production.’
“Recently we have seen some practical examples and the automotive industry has started to understand that this modern PP material can be a workable strong option in areas where the technical requirements had previously called for the use of PA 6 or PBT solutions. Now the benefits of this material are really starting to show,” concludes Eriksson.
Image credits: Polykemi