Multi-axial Fabrics

What are Multi-axial Fabrics?

Multi-axial (non-crimp) reinforcement fabrics are made up of several plies of parallel fibres, which can be laid in different orientations.  The individual layers are then stitched together with a polyester thread to form a single ‘multi-axial reinforcement fabric which can be cut shaped and placed dry into a mould in the exact position needed for the finished part.  Being stitched, a multi-axial fabric can be cut to shape and handled without falling apart and it has excellent in-mould drapeability for accurate dry lay-up.

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Benefits of Using Multi-axial Fabrics for Making High Performance Composite Components

Designer and fabricators of high performance composite parts have discovered the significant production and performance in use advantages of using multi-axial (NCF) in preference to more traditional reinforcements, such as woven rovings:

  • Part performance can be accurately designed and optimised by having fibres in different axis.
  • By having uncrimped fibres within a multiaxial fabric enables an even and unrestricted resin flow, with no resin-rich areas, resulting in a higher fibre volume fraction (lower resin consumption).
  • The stitching aiding resin migration through layers which speeds up infusion rates.
  • Using non-crimped fibres results in higher overall mechanical properties of the finished laminate, with a significantly lower risk of delamination.
  • Multi-axial fabrics, especially using tow spreading technology, help reduce fibre print-through.
  • Being stitched, a multi-axial fabric can be cut to shape and handled without falling apart and have excellent in-mould drapeability for accurate dry lay-up.