Full definition
Conveyor belt fabric type where both warp and weft are nylon (polyamide) fibers. Provides higher impact resistance and greater elongation under load than EP (polyester-nylon), preferred in mining applications with high material drop heights and severe dynamic loads. The higher elongation of NN (up to 3% vs. 1.5% for EP) requires larger take-up travel. Standard: ISO 22721. Available in 2 to 6 plies with breaking strengths from 315 to 2,000 N/mm. Also designated PN in some markets.