McDonnell Douglas Corp. has invented a continuous method for making multi-axial and multi-ply reinforcement fabrics for structural applications. The company from Missouri, USA, discloses a warp-knit fabric containing one or more plies providing localized reinforcement with better damage tolerance. The equipment is based on a continuous belt that has a series of vertical retaining pins along each of its edges. At a series of stations, traversing carriages lay plies of yarns at different angles. Some stations provide stabilizing layers of yarns normally made using high tenacity fibres such as glass, carbon or aramid. Using fibres of different moduli, it is possible to make fabrics in different weights and thickness for a variety of applications.