Patent ID: 7709404

Claim:
A scrim-reinforced prepreg for use in building low-porosity lay-ups comprising: a first prepreg ply comprising a fibrous reinforcement located in a heat-curable resin matrix, said first prepreg ply having a surface; a second prepreg ply comprising a fibrous reinforcement located in a heat-curable resin matrix, said second prepreg ply having a surface; a scrim located between said first prepreg ply and said second prepreg ply, said scrim comprising a plurality of strands that form a grid of parallelograms comprising warp direction strands and strands that are crosswise to said warp direction strands wherein the surfaces of said first and second prepreg plies are pressed against said scrim so as to provide air escape channels that are located between the surfaces of said first and second prepreg plies and along said plurality of strands to form a grid of channels through which air can escape from said scrim-reinforced prepreg.