High tenacity fire-retardant polyester filament yarn(50D-500)

Our high tenacity fire-retardant polyester filament yarn range 50D to 500D(56dtex-555dtex)
Main application:more phosphorus are added during polymerization,so the filament melting point drops to 246℃,consequently the temperature and time of coating or dyeing should be lowered and shortened as possible as they can ,otherwise,the filament well feel hard and its breaking tenacity will lower down.