The document discusses various functional fibres including Nomex, Kevlar, Dyneema, Hygra, carbon, glass, phenolic and Killat N. It provides details on their properties and applications. Nomex and Kevlar are aramid fibers with heat and flame resistance. Dyneema is an ultra high molecular weight polyethylene that is 15 times stronger than steel. Hygra is a nylon fiber that can absorb 35 times its weight in water. Carbon fiber has high strength and is used in aerospace applications. Glass fiber is used for reinforcement in composites. Phenolic fiber has heat resistance and is used where thermal and chemical resistance is required. Killat N is a hollow nylon filament providing