Multiaxial non-crimp fabrics (NCFs) consist of multiple layers of unidirectional (UD) fiber tows, which are laid in defined orientations (e.g., 0°, ±45°, 90°) and mechanically bonded using a stitch-bonding process (typically chain stitch or tricot stitch). Unlike woven fabrics, NCFs do not exhibit crimp, allowing for optimal fiber alignment and improved mechanical performance in the final composite. 

The stitched construction ensures dimensional stability and enables the fabric to be cut, preformed, and dry-placed into the mold with high positional accuracy. Due to their excellent in-mold drapability, multiaxial NCFs conform well to complex geometries, facilitating precise and repeatable dry lay-up. The stitching prevents fiber misalignment during handling and processing, enhancing process reliability in manufacturing methods such as Resin Transfer Molding (RTM), Vacuum-Assisted Resin Infusion (VARI) or Compression Molding.