Preform For Composite Material And Composite Material
December 7, 2004
A preform for a composite material has been patented. The perform includes at least two layers of a reinforcing material made of a reinforcement fiber and, between the layers, a thermoplastic resin layer having spaces to allow liquid resin to flow through the perform. The layers of the preform are laminated, and the thermoplastic resin layer has a weight per square meter of 1-50 gpsm.