Carbon-fiber composite reinforces B-pillar in BMW 7 series


Carbon fiber-reinforced plastic (CFRP) technology has been deployed as a weight saver in the BMW 7 Series where it is used to reinforce the metal shell of the B-pillar. Hexcel supplies BMW with preforms made of unidirectional carbon prepreg set in various orientations and combined with adhesive.

The prepreg is made from Hexcel's HexPly M77 epoxy-based resin system that cures in 1.5 minutes at 160°C. To meet the requirements for series production in the automotive industry, Hexcel has installed a fully automated production line in Austria that converts unidirectional prepreg into bidirectional preforms in seconds.
Read more