Non-woven UD fabrics

A non-woven carbon fabric is made from fibers held in position by a binder, which can include melt bonding powders and meltable fibers, thermosetting resins and thermoplastic 

Heat fusion by applying a fine thermoplastic web (e.g. Polyester) over the entire surface the bonded web is flat and has no crimp, but may be more difficult to wet out with resins. 

Stitch bonding can be used to hold together an assembled warp or weft UD fabric. To confer adequate stability, a mat or tissue is usually placed on the fabric prior to stitching. 

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Figure 21.4 Non-woven UD fabric with adhesive bonding strips. Source Reprinted from SP Systems, Newport, low, technical data with kind permission.

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