| 摘要 |
THE PRESENT INVENTION RELATES TO A PROCESS FOR THE PRODUCTION AND FOR THE SPOOLING OF PREORIENTATED POLYESTER FILAMENTS WHICH CONSIST OF AT LEAST 90 WEIGHT % , IN RELATION TO THE TOTAL WEIGHT OF THE POLYESTER FILAMENT, OF POLYBUTYLENE TEREPHTHALATE (PBT) AND/OR POLY TRIMETHYLENE TEREPHTHALATE (PTMT), PREFERABLY OF PTMT, CHARACTERIZED IN THAT: A) THE SPINNING DELAY IS SET IN THE RANGE OF 70 TO 500;B) THE FILAMENTS, IMMEDIATELY AFTER EXITING FROM THE SPINNING NOZZLE, PASS THROUGH A COOLING DELAY ZONE FROM 30 MM TO 200 MM IN LENGTH;C) THE FILAMENTS ARE COOLED OFF TO BELOW THE SOLIDIFICATION TEMPERATURE;D) THE FILAMENTS ARE BUNDLED AT A DISTANCE OF BETWEEN 500 MM AND 2500 MM FROM THE LOWER SIDE OF THE NOZZLE;E) THE TENSION OF THE THREAD IN FRONT OF AND BEHIND THE REMOVAL GALETTES IS SET TO BETWEEN 0.05 CN/DTEX TO 0.20 CN/DTEX;F) THE THREAD IS SPOOLED WITH A TENSION OF THE THREAD OF BETWEEN 0.025 CN/DTEX TO 0.15 CN/DTEX;G) THE SPOOLING SPEED IS ADJUSTED TO BETWEEN 2200 M/MIN. AND 3500 M/MIN. (FIGURE 1) |
