Heat treating oriented filaments of anisotropic melt polymer

Details Heat treating oriented filaments of anisotropic melt polymer Heat treating oriented filaments of anisotropic melt polymer

D - Textiles, Paper

01

D

18/636

D01D 5/10 (2006.01)

Patent

CA 1071365

ABSTRACT OF THE DISCLOSURE Fibers and films with enhanced tenacity which in the case of fibers are prepared by heat treating oriented fibers from anisotropic-melt-forming linear aromatic and cycloaliphatic polymers, especially poly- esters (including copolyesters), while said fibers are essentially relaxed, at temperatures near the flow temperature but sufficiently below to prevent substantial interfilament fusion, for a period of from five seconds to several hours until the fiber tenacity is increased by at least 50%.

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