In Resin Film Infusion (RFI) the fiber-reinforcements and the matrix come together at the molding stage.  Sheets of resin film are stacked and infused through a dry fabric preform, or alternatively interleaved between individual fabric layers.  The resin is cured either by vacuum assisted infusion plus oven cure, or by using vacuum only, which avoids the expense of using autoclaves.

RFI is particularly suitable for large, flat aerospace parts (eg. aircraft wings).  Very fast deposition rates are achieved and when used in conjunction with thick reinforcements (eg. Hexcel's non crimp NC2 fabric) the process is highly cost-effective.

HexPly® M36 is Hexcel's recommended system for RFI, which is fully compatible with HexFlow® RTM6, making it ideal for RFI/RTM processing.

HexPly® M36 data sheet