Multiaxial fabric

A stitched, non crimp reinforcement with two fibre layers at set orientations, most commonly plus and minus 45 degrees or 0 and 90 degrees. The layers are held together by a fine stitching yarn rather than interlaced, so the fibres stay straight and translate their properties efficiently into the laminate.

A family of reinforcements in which straight, uncrimped layers of fibre are held together by stitching or bonding rather than by weaving. Avoiding crimp improves stiffness, strength and fatigue performance compared with equivalent woven fabrics, and the format suits automated handling and the infusion of large parts.

A closed-mould process in which dry reinforcement is laid into a mould, sealed under a vacuum bag, and liquid resin is drawn through the fibre stack by vacuum alone. It achieves higher fibre content and lower void levels than open moulding, with much lower workshop emissions.

A heavy, coarse fabric woven directly from untwisted glass rovings, usually in a plain weave. It builds laminate thickness and directional strength quickly and is traditionally alternated with chopped strand mat in marine and industrial GRP laminates.