TW246704B - Method for rapid drying of a polybenzazole fiber that initially contains 30 to 80 percent residual moisture content and a polybenzazole fiber
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Method for rapid drying of a polybenzazole fiber that initially contains 30 to 80 percent residual moisture content and a polybenzazole fiber
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A process to rapidly dry a polybenzazole fiber that initially contains 30 to 80 percent residual moisture content, while minimizing damage to the fiber, the process comprising the step of exposing the fiber sequentially to two or more temperatures, in which the temperatures are set relative to the percent residual moisture content of the fiber, and in which each temperature set is hotter than the previous temperature, while allowing for brief periods of non-contact time during drying in which the fiber is not exposed to the full set point temperature, in which the final percent residual moisture content of the fiber after it has been exposed to the two or more temperatures is 0 to 6 percent, in which the total residence time the fiber is exposed sequentially to two or more temperatures is 30 seconds to twenty minutes, the first of the two or more temperatures is 140 deg.Cto 220 deg.C.
TW82110441A1993-11-021993-12-09Method for rapid drying of a polybenzazole fiber that initially contains 30 to 80 percent residual moisture content and a polybenzazole fiber
TW246704B
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