The strength loss of bio-based polyamide （PA）56 cords during the twisting，weaving and dipping processes was studied.The results showed that the main strength loss of bio-based PA56 cords occured during the twisting process.These factors such as twisting machine type and process parameter settings during twisting，environment conditions（storage time，temperature and humidity），and the process quality of the twisted yarn，significantly affected the strength loss of the bio-based PA 56 cords.
