Full definition
The dominant textile reinforcement fabric type in modern conveyor belts, where EP designates a woven fabric with polyester (PET) yarns in the warp (longitudinal) direction and nylon (polyamide 6 or 6.6) yarns in the weft (transverse) direction. Polyester warp provides: low elongation (1.5-2% at working tension), high modulus, and excellent dimensional stability. Nylon weft provides: high impact absorption, superior tear resistance, and flexibility. This combination outperforms all-nylon (NN) in stretch control and all-polyester (PP) in toughness. Standard strength ratings per ply: EP100, EP125, EP160, EP200, EP250, EP315, EP400, EP500 (N/mm per ply). Belt designation example: EP400/3 = 3 plies of EP400 fabric, total breaking strength 1,200 N/mm. Per ISO 14890 and DIN 22102. EP fabric has largely replaced cotton and NN in new belt manufacturing globally. The fabric is rubber-skimmed (calendered) before building into the belt carcass for inter-ply adhesion.