A combination of woven and nonwoven layers forms a dense, highly stable anti-ballistic material, according to its developer, Tex Tech Industries Inc, North Monmouth, Maine, USA.
US Patent 7 101 818 says the material is based on multiple layers of woven fabric made from ballistic fibres and at least one layer of unidirectional nonwoven fabric, combined with the woven fabric by needle felting (needlepunching). The combined weight of woven and nonwoven will be about 342 g x [m.sup.-2] (0.07 pounds a square foot).
The multi-layer stacks will comprise 4 to 20 quas