FLEXIBLE CONTINUOUS TAPE FROM MULTIFILAMENT YARN AND METHOD FOR MAKING THESE

摘要

THE INVENTION PERTAINS TO A METHOD FOR MAKING A FLEXIBLE FIBROUS CONTINUOUS TAPE CONTAINING 60 TO 98 WT% FIBER BASED ON THE WEIGHT OF THE TAPE, FROM MULTIFILAMENT YARN SELECTED FROM ARAMID, GLASS, AROMATIC POLYESTER, AND RIGID ROD POLYMER, COMPRISING THE STEPS: A1) SPREADING THE FILAMENTS OF THE YARN TO OBTAIN A FILAMENT LAYER HAVING A CROSS SECTIONAL ASPECT RATIO (W/H) OF 2 TO 2000; AND B1) TREATING THE SPREAD FILAMENTS WITH A CURABLE RESIN, OR A LIQUID THERMOPLASTIC RESIN OR WAX; OR A2) TREATING THE YARN WITH THE CURABLE RESIN, OR THE LIQUID THERMOPLASTIC RESIN OR WAX; AND B2) SPREADING THE FILAMENTS OF THE YARN TO OBTAIN A FILAMENT LAYER HAVING A CROSS SECTIONAL ASPECT RATIO (W/H) OF 2 TO 2000; FOLLOWED BY C) FIXATING THE FILAMENTS BY CURING OR SOLIDIFYING THE RESIN TO OBTAIN THE TAPE, WHEREIN STEPS A1- B1, RESPECTIVELY A2 - B2, AND C ARE PERFORMED IN-LINE. THE METHOD IS SUITABLE FOR MAKING FLEXIBLE TAPE CONTAINING 60 TO 98 WT% FIBER BASED ON THE WEIGHT OF THE TAPE, COMPRISING A FILAMENT LAYER HAVING A CROSS SECTIONAL ASPECT RATIO (W/H) OF 2 TO 2000, THE FILAMENTS BEING FIXATED BY A CURED OR SOLIDIFIED RESIN. THE METHOD IS ALSO SUITABLE FOR MAKING MICRO-TAPE HAVING A WIDTH OF LESS THAN 0.5 MILLIMETER AND A CROSS SECTIONAL ASPECT RATIO (W/H) 2 TO 20.